From b358c6cf029cb67b3ed9cc367fb46f1fa3228c5b Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 30 Apr 2013 10:44:51 +0300 Subject: fbdev/ps3fb: fix compile warning Commit 11bd5933abe0 ("fbdev/ps3fb: use vm_iomap_memory()") introduced the following warning: drivers/video/ps3fb.c: In function 'ps3fb_mmap': drivers/video/ps3fb.c:712:2: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] Fix this by adding the parentheses. Signed-off-by: Tomi Valkeinen diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c index d9f08c6..dbfe2c1 100644 --- a/drivers/video/ps3fb.c +++ b/drivers/video/ps3fb.c @@ -710,7 +710,7 @@ static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma) r = vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len); dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n", - info->fix.smem_start + vma->vm_pgoff << PAGE_SHIFT, + info->fix.smem_start + (vma->vm_pgoff << PAGE_SHIFT), vma->vm_start); return r; -- cgit v0.10.2 From 31d6eebf7e079cfb5e98e65d5af4c6de093e076c Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Thu, 2 May 2013 10:19:11 -0400 Subject: regulator: Fix kernel-doc generation warnings. Add a couple kernel-doc lines to get rid of kernel-doc generation warnings, no functional change. Signed-off-by: Robert P. J. Day Signed-off-by: Mark Brown diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 6e50178..014c92a 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1539,7 +1539,10 @@ static void regulator_ena_gpio_free(struct regulator_dev *rdev) } /** - * Balance enable_count of each GPIO and actual GPIO pin control. + * regulator_ena_gpio_ctrl - balance enable_count of each GPIO and actual GPIO pin control + * @rdev: regulator_dev structure + * @enable: enable GPIO at initial use? + * * GPIO is enabled in case of initial use. (enable_count is 0) * GPIO is disabled when it is not shared any more. (enable_count <= 1) */ -- cgit v0.10.2 From cd5de26288604cb8a6f7fba041cc5fb610cbff9e Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 1 Apr 2013 18:04:21 -0300 Subject: [media] pwc: Fix comment wrt lock ordering With all the changes to handle the locking in the v4l2-core rather then at the driver level, the order in which the 2 pwc locks need to be taken has changed, update the comment in the header file to correctly reflect this. Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/usb/pwc/pwc.h b/drivers/media/usb/pwc/pwc.h index 7a6a0d3..81b017a 100644 --- a/drivers/media/usb/pwc/pwc.h +++ b/drivers/media/usb/pwc/pwc.h @@ -226,7 +226,7 @@ struct pwc_device struct list_head queued_bufs; spinlock_t queued_bufs_lock; /* Protects queued_bufs */ - /* Note if taking both locks v4l2_lock must always be locked first! */ + /* If taking both locks vb_queue_lock must always be locked first! */ struct mutex v4l2_lock; /* Protects everything else */ struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ -- cgit v0.10.2 From 0391dc17bd5d7d6b1706d0be6472c4b352b57c05 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 29 Apr 2013 08:54:14 -0300 Subject: [media] gspca-sonixb: Adjust hstart on sn9c103 + pas202 For some unknown reason we need to increase hstart by 1 on when using the PAS202 on the sn9c103 (versus on the sn9c102), otherwise we get the wrong colors, due to shifting of the bayer pattern. Reported-by: Patrizio Bassi Tested-by: Patrizio Bassi Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/usb/gspca/sonixb.c b/drivers/media/usb/gspca/sonixb.c index 3fe207e..d7ff3b9 100644 --- a/drivers/media/usb/gspca/sonixb.c +++ b/drivers/media/usb/gspca/sonixb.c @@ -1159,6 +1159,13 @@ static int sd_start(struct gspca_dev *gspca_dev) regs[0x01] = 0x44; /* Select 24 Mhz clock */ regs[0x12] = 0x02; /* Set hstart to 2 */ } + break; + case SENSOR_PAS202: + /* For some unknown reason we need to increase hstart by 1 on + the sn9c103, otherwise we get wrong colors (bayer shift). */ + if (sd->bridge == BRIDGE_103) + regs[0x12] += 1; + break; } /* Disable compression when the raw bayer format has been selected */ if (cam->cam_mode[gspca_dev->curr_mode].priv & MODE_RAW) -- cgit v0.10.2 From 3d75095a533aa3bbad652369ffde4c129781b8ec Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Wed, 8 May 2013 16:35:10 +0530 Subject: regulator: dbx500: Make local symbol static power_state_active_get is used only in this file. Make it static. While at it also move this function definition inside the CONFIG_REGULATOR_DEBUG macro as it is called only from within it. This also avoids further build warning related to unused definition. Signed-off-by: Sachin Kamat Signed-off-by: Mark Brown diff --git a/drivers/regulator/dbx500-prcmu.c b/drivers/regulator/dbx500-prcmu.c index 89bd2fa..ce89f78 100644 --- a/drivers/regulator/dbx500-prcmu.c +++ b/drivers/regulator/dbx500-prcmu.c @@ -24,18 +24,6 @@ static int power_state_active_cnt; /* will initialize to zero */ static DEFINE_SPINLOCK(power_state_active_lock); -int power_state_active_get(void) -{ - unsigned long flags; - int cnt; - - spin_lock_irqsave(&power_state_active_lock, flags); - cnt = power_state_active_cnt; - spin_unlock_irqrestore(&power_state_active_lock, flags); - - return cnt; -} - void power_state_active_enable(void) { unsigned long flags; @@ -65,6 +53,18 @@ out: #ifdef CONFIG_REGULATOR_DEBUG +static int power_state_active_get(void) +{ + unsigned long flags; + int cnt; + + spin_lock_irqsave(&power_state_active_lock, flags); + cnt = power_state_active_cnt; + spin_unlock_irqrestore(&power_state_active_lock, flags); + + return cnt; +} + static struct ux500_regulator_debug { struct dentry *dir; struct dentry *status_file; -- cgit v0.10.2 From e6c10b7c5e0e7c6ecf7d60f502c7eeaf3361b48f Mon Sep 17 00:00:00 2001 From: Krishna Mohan Date: Fri, 1 Mar 2013 11:35:31 +0000 Subject: libfcoe: Fix Conflicting FCFs issue in the fabric When multiple FCFs in use, and first FIP Advertisement received is with "Available for Login" i.e A bit set to 0, FCF selection will fail. The fix is to remove the assumption in the code that first FCF is only allowed selectable FCF. Consider the scenario fip->fcfs contains FCF1(fabricname X, marked A=0) FCF2(fabricname Y, marked A=1). list_first_entry(first) points to FCF1 and 1st iteration we ignore the FCF and on 2nd iteration we compare FCF1 & FCF2 fabric name and we fails to perform FCF selection. Signed-off-by: Krishna Mohan Reviewed-by: Bhanu Prakash Gollapudi Signed-off-by: Robert Love diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index a762472..4c77641 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -1548,9 +1548,6 @@ static struct fcoe_fcf *fcoe_ctlr_select(struct fcoe_ctlr *fip) { struct fcoe_fcf *fcf; struct fcoe_fcf *best = fip->sel_fcf; - struct fcoe_fcf *first; - - first = list_first_entry(&fip->fcfs, struct fcoe_fcf, list); list_for_each_entry(fcf, &fip->fcfs, list) { LIBFCOE_FIP_DBG(fip, "consider FCF fab %16.16llx " @@ -1568,17 +1565,15 @@ static struct fcoe_fcf *fcoe_ctlr_select(struct fcoe_ctlr *fip) "" : "un"); continue; } - if (fcf->fabric_name != first->fabric_name || - fcf->vfid != first->vfid || - fcf->fc_map != first->fc_map) { + if (!best || fcf->pri < best->pri || best->flogi_sent) + best = fcf; + if (fcf->fabric_name != best->fabric_name || + fcf->vfid != best->vfid || + fcf->fc_map != best->fc_map) { LIBFCOE_FIP_DBG(fip, "Conflicting fabric, VFID, " "or FC-MAP\n"); return NULL; } - if (fcf->flogi_sent) - continue; - if (!best || fcf->pri < best->pri || best->flogi_sent) - best = fcf; } fip->sel_fcf = best; if (best) { -- cgit v0.10.2 From 732bdb9d141879b1b5b357f934553fe827c1f46b Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Wed, 20 Mar 2013 07:17:55 +0000 Subject: libfc: Correct check for initiator role The service_params field is being checked against the symbol FC_RPORT_ROLE_FCP_INITIATOR where it really should be checked against FCP_SPPF_INIT_FCN. Signed-off-by: Mark Rustad Tested-by: Jack Morgan Signed-off-by: Robert Love diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c index d518d17..6bbb944 100644 --- a/drivers/scsi/libfc/fc_rport.c +++ b/drivers/scsi/libfc/fc_rport.c @@ -1962,7 +1962,7 @@ static int fc_rport_fcp_prli(struct fc_rport_priv *rdata, u32 spp_len, rdata->flags |= FC_RP_FLAGS_RETRY; rdata->supported_classes = FC_COS_CLASS3; - if (!(lport->service_params & FC_RPORT_ROLE_FCP_INITIATOR)) + if (!(lport->service_params & FCP_SPPF_INIT_FCN)) return 0; spp->spp_flags |= rspp->spp_flags & FC_SPP_EST_IMG_PAIR; -- cgit v0.10.2 From fb00cc2353ca22b3278f72d73e65a33486d1dbc7 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Fri, 3 May 2013 19:34:15 +0000 Subject: libfc: extend ex_lock to protect all of fc_seq_send This warning was reported recently: WARNING: at drivers/scsi/libfc/fc_exch.c:478 fc_seq_send+0x14f/0x160 [libfc]() (Not tainted) Hardware name: ProLiant DL120 G7 Modules linked in: tcm_fc target_core_iblock target_core_file target_core_pscsi target_core_mod configfs dm_round_robin dm_multipath 8021q garp stp llc bnx2fc cnic uio fcoe libfcoe libfc scsi_transport_fc scsi_tgt autofs4 sunrpc pcc_cpufreq ipv6 hpilo hpwdt e1000e microcode iTCO_wdt iTCO_vendor_support serio_raw shpchp ixgbe dca mdio sg ext4 mbcache jbd2 sd_mod crc_t10dif pata_acpi ata_generic ata_piix hpsa dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan] Pid: 5464, comm: target_completi Not tainted 2.6.32-272.el6.x86_64 #1 Call Trace: [] ? warn_slowpath_common+0x87/0xc0 [] ? warn_slowpath_null+0x1a/0x20 [] ? fc_seq_send+0x14f/0x160 [libfc] [] ? ft_queue_status+0x16e/0x210 [tcm_fc] [] ? target_complete_ok_work+0x0/0x4b0 [target_core_mod] [] ? target_complete_ok_work+0x106/0x4b0 [target_core_mod] [] ? target_complete_ok_work+0x0/0x4b0 [target_core_mod] [] ? worker_thread+0x170/0x2a0 [] ? autoremove_wake_function+0x0/0x40 [] ? worker_thread+0x0/0x2a0 [] ? kthread+0x96/0xa0 [] ? child_rip+0xa/0x20 [] ? kthread+0x0/0xa0 [] ? child_rip+0x0/0x20 It occurs because fc_seq_send can have multiple contexts executing within it at the same time, and fc_seq_send doesn't consistently use the ep->ex_lock that protects this structure. Because of that, its possible for one context to clear the INIT bit in the ep->esb_state field while another checks it, leading to the above stack trace generated by the WARN_ON in the function. We should probably undertake the effort to convert access to the fc_exch structures to use rcu, but that a larger work item. To just fix this specific issue, we can just extend the ex_lock protection through the entire fc_seq_send path Signed-off-by: Neil Horman Reported-by: Gris Ge CC: Robert Love Signed-off-by: Robert Love diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c index c772d8d..8b928c6 100644 --- a/drivers/scsi/libfc/fc_exch.c +++ b/drivers/scsi/libfc/fc_exch.c @@ -463,13 +463,7 @@ static void fc_exch_delete(struct fc_exch *ep) fc_exch_release(ep); /* drop hold for exch in mp */ } -/** - * fc_seq_send() - Send a frame using existing sequence/exchange pair - * @lport: The local port that the exchange will be sent on - * @sp: The sequence to be sent - * @fp: The frame to be sent on the exchange - */ -static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, +static int fc_seq_send_locked(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame *fp) { struct fc_exch *ep; @@ -479,7 +473,7 @@ static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, u8 fh_type = fh->fh_type; ep = fc_seq_exch(sp); - WARN_ON((ep->esb_stat & ESB_ST_SEQ_INIT) != ESB_ST_SEQ_INIT); + WARN_ON(!(ep->esb_stat & ESB_ST_SEQ_INIT)); f_ctl = ntoh24(fh->fh_f_ctl); fc_exch_setup_hdr(ep, fp, f_ctl); @@ -502,17 +496,34 @@ static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, error = lport->tt.frame_send(lport, fp); if (fh_type == FC_TYPE_BLS) - return error; + goto out; /* * Update the exchange and sequence flags, * assuming all frames for the sequence have been sent. * We can only be called to send once for each sequence. */ - spin_lock_bh(&ep->ex_lock); ep->f_ctl = f_ctl & ~FC_FC_FIRST_SEQ; /* not first seq */ if (f_ctl & FC_FC_SEQ_INIT) ep->esb_stat &= ~ESB_ST_SEQ_INIT; +out: + return error; +} + +/** + * fc_seq_send() - Send a frame using existing sequence/exchange pair + * @lport: The local port that the exchange will be sent on + * @sp: The sequence to be sent + * @fp: The frame to be sent on the exchange + */ +static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, + struct fc_frame *fp) +{ + struct fc_exch *ep; + int error; + ep = fc_seq_exch(sp); + spin_lock_bh(&ep->ex_lock); + error = fc_seq_send_locked(lport, sp, fp); spin_unlock_bh(&ep->ex_lock); return error; } @@ -629,7 +640,7 @@ static int fc_exch_abort_locked(struct fc_exch *ep, if (fp) { fc_fill_fc_hdr(fp, FC_RCTL_BA_ABTS, ep->did, ep->sid, FC_TYPE_BLS, FC_FC_END_SEQ | FC_FC_SEQ_INIT, 0); - error = fc_seq_send(ep->lp, sp, fp); + error = fc_seq_send_locked(ep->lp, sp, fp); } else error = -ENOBUFS; return error; @@ -1132,7 +1143,7 @@ static void fc_seq_send_last(struct fc_seq *sp, struct fc_frame *fp, f_ctl = FC_FC_LAST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT; f_ctl |= ep->f_ctl; fc_fill_fc_hdr(fp, rctl, ep->did, ep->sid, fh_type, f_ctl, 0); - fc_seq_send(ep->lp, sp, fp); + fc_seq_send_locked(ep->lp, sp, fp); } /** @@ -1307,8 +1318,8 @@ static void fc_exch_recv_abts(struct fc_exch *ep, struct fc_frame *rx_fp) ap->ba_low_seq_cnt = htons(sp->cnt); } sp = fc_seq_start_next_locked(sp); - spin_unlock_bh(&ep->ex_lock); fc_seq_send_last(sp, fp, FC_RCTL_BA_ACC, FC_TYPE_BLS); + spin_unlock_bh(&ep->ex_lock); fc_frame_free(rx_fp); return; -- cgit v0.10.2 From f4aaea6d5106f6092a80a648b5a12d31b6cb3335 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Fri, 3 May 2013 19:38:10 +0000 Subject: MAINTAINERS: Fix fcoe mailing list The FCoE mailing list has moved, updte it in the MAINTAINERS file Signed-off-by: Neil Horman CC: Robert Love Signed-off-by: Robert Love diff --git a/MAINTAINERS b/MAINTAINERS index 8bdd7a7..bde678d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3165,7 +3165,7 @@ F: lib/fault-inject.c FCOE SUBSYSTEM (libfc, libfcoe, fcoe) M: Robert Love -L: devel@open-fcoe.org +L: fcoe-devel@open-fcoe.org W: www.Open-FCoE.org S: Supported F: drivers/scsi/libfc/ -- cgit v0.10.2 From 68e850d80df934b9c9c15d8a0956512cb3b6f1fc Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Thu, 9 May 2013 12:46:41 +0100 Subject: regmap: debugfs: Check return value of regmap_write() Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 23b701f5..975719b 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -265,6 +265,7 @@ static ssize_t regmap_map_write_file(struct file *file, char *start = buf; unsigned long reg, value; struct regmap *map = file->private_data; + int ret; buf_size = min(count, (sizeof(buf)-1)); if (copy_from_user(buf, user_buf, buf_size)) @@ -282,7 +283,9 @@ static ssize_t regmap_map_write_file(struct file *file, /* Userspace has been fiddling around behind the kernel's back */ add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE); - regmap_write(map, reg, value); + ret = regmap_write(map, reg, value); + if (ret < 0) + return ret; return buf_size; } #else -- cgit v0.10.2 From 625cdd78d119d5848ac3c47d129bdf5f23f64120 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 11 May 2013 19:13:49 +0300 Subject: svcauth_gss: fix error code in use_gss_proxy() This should return zero on success and -EBUSY on error so the type needs to be int instead of bool. Signed-off-by: Dan Carpenter Signed-off-by: J. Bruce Fields diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index 871c73c..2c6a1ec 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -1287,7 +1287,7 @@ static bool use_gss_proxy(struct net *net) #ifdef CONFIG_PROC_FS -static bool set_gss_proxy(struct net *net, int type) +static int set_gss_proxy(struct net *net, int type) { struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); int ret = 0; -- cgit v0.10.2 From 364398324c901bc834f762eb5443d2e5a1d2a0db Mon Sep 17 00:00:00 2001 From: "gurinder.shergill@hp.com" Date: Tue, 23 Apr 2013 10:13:17 -0700 Subject: [SCSI] qla2xxx: Fix for locking issue between driver ISR and mailbox routines The driver uses ha->mbx_cmd_flags variable to pass information between its ISR and mailbox routines, however, it does so without the protection of any locks. Under certain conditions, this can lead to multiple mailbox command completions being signaled, which, in turn, leads to a false mailbox timeout error for the subsequently issued mailbox command. The issue occurs frequently but intermittenly with the Qlogic 8GFC mezz card during card initialization, resulting in card initialization failure. Signed-off-by: Gurinder (Sunny) Shergill Acked-by: Saurav Kashyap Signed-off-by: James Bottomley diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h index 98ab921..0a5c895 100644 --- a/drivers/scsi/qla2xxx/qla_inline.h +++ b/drivers/scsi/qla2xxx/qla_inline.h @@ -278,3 +278,14 @@ qla2x00_do_host_ramp_up(scsi_qla_host_t *vha) set_bit(HOST_RAMP_UP_QUEUE_DEPTH, &vha->dpc_flags); } + +static inline void +qla2x00_handle_mbx_completion(struct qla_hw_data *ha, int status) +{ + if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && + (status & MBX_INTERRUPT) && ha->flags.mbox_int) { + set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); + clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags); + complete(&ha->mbx_intr_comp); + } +} diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 259d920..d2a4c75 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -104,14 +104,9 @@ qla2100_intr_handler(int irq, void *dev_id) RD_REG_WORD(®->hccr); } } + qla2x00_handle_mbx_completion(ha, status); spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && - (status & MBX_INTERRUPT) && ha->flags.mbox_int) { - set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - complete(&ha->mbx_intr_comp); - } - return (IRQ_HANDLED); } @@ -221,14 +216,9 @@ qla2300_intr_handler(int irq, void *dev_id) WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); RD_REG_WORD_RELAXED(®->hccr); } + qla2x00_handle_mbx_completion(ha, status); spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && - (status & MBX_INTERRUPT) && ha->flags.mbox_int) { - set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - complete(&ha->mbx_intr_comp); - } - return (IRQ_HANDLED); } @@ -2613,14 +2603,9 @@ qla24xx_intr_handler(int irq, void *dev_id) if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1))) ndelay(3500); } + qla2x00_handle_mbx_completion(ha, status); spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && - (status & MBX_INTERRUPT) && ha->flags.mbox_int) { - set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - complete(&ha->mbx_intr_comp); - } - return IRQ_HANDLED; } @@ -2763,13 +2748,9 @@ qla24xx_msix_default(int irq, void *dev_id) } WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); } while (0); + qla2x00_handle_mbx_completion(ha, status); spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && - (status & MBX_INTERRUPT) && ha->flags.mbox_int) { - set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - complete(&ha->mbx_intr_comp); - } return IRQ_HANDLED; } diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 9e5d89d..3587ec2 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -179,8 +179,6 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp) wait_for_completion_timeout(&ha->mbx_intr_comp, mcp->tov * HZ); - clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags); - } else { ql_dbg(ql_dbg_mbx, vha, 0x1011, "Cmd=%x Polling Mode.\n", command); diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c index 937fed8..a6df558 100644 --- a/drivers/scsi/qla2xxx/qla_mr.c +++ b/drivers/scsi/qla2xxx/qla_mr.c @@ -148,9 +148,6 @@ qlafx00_mailbox_command(scsi_qla_host_t *vha, struct mbx_cmd_32 *mcp) spin_unlock_irqrestore(&ha->hardware_lock, flags); wait_for_completion_timeout(&ha->mbx_intr_comp, mcp->tov * HZ); - - clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags); - } else { ql_dbg(ql_dbg_mbx, vha, 0x112c, "Cmd=%x Polling Mode.\n", command); @@ -2934,13 +2931,10 @@ qlafx00_intr_handler(int irq, void *dev_id) QLAFX00_CLR_INTR_REG(ha, clr_intr); QLAFX00_RD_INTR_REG(ha); } + + qla2x00_handle_mbx_completion(ha, status); spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && - (status & MBX_INTERRUPT) && ha->flags.mbox_int) { - set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - complete(&ha->mbx_intr_comp); - } return IRQ_HANDLED; } diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c index 10754f51..cce0cd0 100644 --- a/drivers/scsi/qla2xxx/qla_nx.c +++ b/drivers/scsi/qla2xxx/qla_nx.c @@ -2074,9 +2074,6 @@ qla82xx_intr_handler(int irq, void *dev_id) } WRT_REG_DWORD(®->host_int, 0); } - spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (!ha->flags.msi_enabled) - qla82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff); #ifdef QL_DEBUG_LEVEL_17 if (!irq && ha->flags.eeh_busy) @@ -2085,11 +2082,12 @@ qla82xx_intr_handler(int irq, void *dev_id) status, ha->mbx_cmd_flags, ha->flags.mbox_int, stat); #endif - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && - (status & MBX_INTERRUPT) && ha->flags.mbox_int) { - set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - complete(&ha->mbx_intr_comp); - } + qla2x00_handle_mbx_completion(ha, status); + spin_unlock_irqrestore(&ha->hardware_lock, flags); + + if (!ha->flags.msi_enabled) + qla82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff); + return IRQ_HANDLED; } @@ -2149,8 +2147,6 @@ qla82xx_msix_default(int irq, void *dev_id) WRT_REG_DWORD(®->host_int, 0); } while (0); - spin_unlock_irqrestore(&ha->hardware_lock, flags); - #ifdef QL_DEBUG_LEVEL_17 if (!irq && ha->flags.eeh_busy) ql_log(ql_log_warn, vha, 0x5044, @@ -2158,11 +2154,9 @@ qla82xx_msix_default(int irq, void *dev_id) status, ha->mbx_cmd_flags, ha->flags.mbox_int, stat); #endif - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && - (status & MBX_INTERRUPT) && ha->flags.mbox_int) { - set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); - complete(&ha->mbx_intr_comp); - } + qla2x00_handle_mbx_completion(ha, status); + spin_unlock_irqrestore(&ha->hardware_lock, flags); + return IRQ_HANDLED; } @@ -3345,7 +3339,7 @@ void qla82xx_clear_pending_mbx(scsi_qla_host_t *vha) ha->flags.mbox_busy = 0; ql_log(ql_log_warn, vha, 0x6010, "Doing premature completion of mbx command.\n"); - if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags)) + if (test_and_clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags)) complete(&ha->mbx_intr_comp); } } -- cgit v0.10.2 From 222ab5946860e1d77870ffbfebebff2bcb1f4215 Mon Sep 17 00:00:00 2001 From: "wenxiong@linux.vnet.ibm.com" Date: Thu, 14 Mar 2013 13:52:25 -0500 Subject: [SCSI] ipr: Avoid target_destroy accessing memory after it was freed Defined target_ids,array_ids and vsets_ids as unsigned long to avoid target_destroy accessing memory after it was freed. Signed-off-by: Wen Xiong Signed-off-by: James Bottomley diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 82a3c1e..6c4cedb 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -8980,19 +8980,6 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) if (!ioa_cfg->res_entries) goto out; - if (ioa_cfg->sis64) { - ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) * - BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); - ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) * - BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); - ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) * - BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); - - if (!ioa_cfg->target_ids || !ioa_cfg->array_ids - || !ioa_cfg->vset_ids) - goto out_free_res_entries; - } - for (i = 0; i < ioa_cfg->max_devs_supported; i++) { list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; @@ -9089,9 +9076,6 @@ out_free_vpd_cbs: ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); out_free_res_entries: kfree(ioa_cfg->res_entries); - kfree(ioa_cfg->target_ids); - kfree(ioa_cfg->array_ids); - kfree(ioa_cfg->vset_ids); goto out; } diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index a1fb840..07a85ce 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -1440,9 +1440,9 @@ struct ipr_ioa_cfg { /* * Bitmaps for SIS64 generated target values */ - unsigned long *target_ids; - unsigned long *array_ids; - unsigned long *vset_ids; + unsigned long target_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)]; + unsigned long array_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)]; + unsigned long vset_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)]; u16 type; /* CCIN of the card */ -- cgit v0.10.2 From 3fab70c165795431f00ddf9be8b84ddd07bd1f8f Mon Sep 17 00:00:00 2001 From: Lingzhu Xiang Date: Fri, 10 May 2013 18:29:21 +0800 Subject: efivarfs: Never return ENOENT from firmware again Previously in 1fa7e69 efi_status_to_err() translated firmware status EFI_NOT_FOUND to -EIO instead of -ENOENT for efivarfs operations to avoid confusion. After refactoring in e14ab23, it is also used in other places where the translation may be unnecessary. So move the translation to efivarfs specific code. Also return EOF for reading zero-length files, which is what users would expect. Cc: Josh Boyer Cc: Jeremy Kerr Cc: Lee, Chun-Yi Cc: Andy Whitcroft Signed-off-by: Lingzhu Xiang Signed-off-by: Matt Fleming diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c index bfb5315..8dd524f 100644 --- a/fs/efivarfs/file.c +++ b/fs/efivarfs/file.c @@ -44,8 +44,11 @@ static ssize_t efivarfs_file_write(struct file *file, bytes = efivar_entry_set_get_size(var, attributes, &datasize, data, &set); - if (!set && bytes) + if (!set && bytes) { + if (bytes == -ENOENT) + bytes = -EIO; goto out; + } if (bytes == -ENOENT) { drop_nlink(inode); @@ -76,7 +79,14 @@ static ssize_t efivarfs_file_read(struct file *file, char __user *userbuf, int err; err = efivar_entry_size(var, &datasize); - if (err) + + /* + * efivarfs represents uncommitted variables with + * zero-length files. Reading them should return EOF. + */ + if (err == -ENOENT) + return 0; + else if (err) return err; data = kmalloc(datasize + sizeof(attributes), GFP_KERNEL); -- cgit v0.10.2 From d51df2c5d3c1f2c639708fc644ed67296bb51dc5 Mon Sep 17 00:00:00 2001 From: Seiji Aguchi Date: Fri, 10 May 2013 20:45:36 +0000 Subject: efivar: fix oops in efivar_update_sysfs_entries() caused by memory reuse The loop in efivar_update_sysfs_entries() reuses the same allocation for entries each time it calls efivar_create_sysfs_entry(entry). This is wrong because efivar_create_sysfs_entry() expects to keep the memory it was passed, so the caller may not free it (and may not pass the same memory in multiple times). This leads to the oops below. Fix by getting a new allocation each time we go around the loop. ---[ end trace ba4907d5c519d111 ]--- BUG: unable to handle kernel NULL pointer dereference at (null) IP: [] efivar_entry_find+0x14f/0x2d0 PGD 0 Oops: 0000 [#2] SMP Modules linked in: oops(OF+) ebtable_nat ebtables xt_CHECKSUM [...] CPU: 0 PID: 301 Comm: kworker/0:2 Tainted: GF D O 3.9.0+ #1 Hardware name: LENOVO 4291EV7/4291EV7, BIOS 8DET52WW (1.22 ) 09/15/2011 Workqueue: events efivar_update_sysfs_entries task: ffff8801955920c0 ti: ffff88019413e000 task.ti: ffff88019413e000 RIP: 0010:[] [] efivar_entry_find+0x14f/0x2d0 RSP: 0018:ffff88019413fa48 EFLAGS: 00010006 RAX: 0000000000000000 RBX: ffff880195d87c00 RCX: ffffffff81ab6f60 RDX: ffff88019413fb88 RSI: 0000000000000400 RDI: ffff880196254000 RBP: ffff88019413fbd8 R08: 0000000000000000 R09: ffff8800dad99037 R10: ffff880195d87c00 R11: 0000000000000430 R12: ffffffff81ab6f60 R13: fffffffffffff7d8 R14: ffff880196254000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88019e200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000001a0b000 CR4: 00000000000407f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: ffff88019413fb78 ffff88019413fb88 ffffffff81e85d60 03000000972b5c00 ffff88019413fa29 ffffffff81e85d60 ffff88019413fbfb 0000000197087280 00000000000000fe 0000000000000001 ffffffff81e85dd9 ffff880197087280 Call Trace: [] ? idr_get_empty_slot+0x131/0x240 [] ? put_dec+0x72/0x90 [] ? cache_alloc_refill+0x170/0x2f0 [] efivar_update_sysfs_entry+0x150/0x220 [] ? efi_call2+0x9/0x70 [] ? virt_efi_get_next_variable+0x47/0x1b0 [] ? kmem_cache_alloc_trace+0x1af/0x1c0 [] efivar_init+0x2c3/0x380 [] ? efivar_delete+0xd0/0xd0 [] efivar_update_sysfs_entries+0x6f/0x90 [] process_one_work+0x183/0x490 [] worker_thread+0x120/0x3a0 [] ? manage_workers+0x160/0x160 [] kthread+0xce/0xe0 [] ? kthread_freezable_should_stop+0x70/0x70 [] ret_from_fork+0x7c/0xb0 [] ? kthread_freezable_should_stop+0x70/0x70 Code: 8d 55 b0 48 8d 45 a0 49 81 ed 28 08 00 00 48 89 95 78 fe [...] RIP [] efivar_entry_find+0x14f/0x2d0 RSP CR2: 0000000000000000 ---[ end trace ba4907d5c519d112 ]--- Cc: James Bottomley Cc: Tomoki Sekiyama Signed-off-by: Seiji Aguchi Signed-off-by: Matt Fleming diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c index b623c59..8bd1bb6 100644 --- a/drivers/firmware/efi/efivars.c +++ b/drivers/firmware/efi/efivars.c @@ -523,13 +523,11 @@ static void efivar_update_sysfs_entries(struct work_struct *work) struct efivar_entry *entry; int err; - entry = kzalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) - return; - /* Add new sysfs entries */ while (1) { - memset(entry, 0, sizeof(*entry)); + entry = kzalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return; err = efivar_init(efivar_update_sysfs_entry, entry, true, false, &efivar_sysfs_list); -- cgit v0.10.2 From eccaf52fee8305d5207ff110950a82c100e459bc Mon Sep 17 00:00:00 2001 From: "Lee, Chun-Yi" Date: Thu, 2 May 2013 22:07:01 +0800 Subject: x86, efi: initial the local variable of DataSize to zero That will be better initial the value of DataSize to zero for the input of GetVariable(), otherwise we will feed a random value. The debug log of input DataSize like this: ... [ 195.915612] EFI Variables Facility v0.08 2004-May-17 [ 195.915819] efi: size: 18446744071581821342 [ 195.915969] efi: size': 18446744071581821342 [ 195.916324] efi: size: 18446612150714306560 [ 195.916632] efi: size': 18446612150714306560 [ 195.917159] efi: size: 18446612150714306560 [ 195.917453] efi: size': 18446612150714306560 ... The size' is value that was returned by BIOS. After applied this patch: [ 82.442042] EFI Variables Facility v0.08 2004-May-17 [ 82.442202] efi: size: 0 [ 82.442360] efi: size': 1039 [ 82.443828] efi: size: 0 [ 82.444127] efi: size': 2616 [ 82.447057] efi: size: 0 [ 82.447356] efi: size': 5832 ... Found on Acer Aspire V3 BIOS, it will not return the size of data if we input a non-zero DataSize. Cc: Matthew Garrett Cc: H. Peter Anvin Signed-off-by: Lee, Chun-Yi Signed-off-by: Matt Fleming diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 55856b2..82089d8 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -206,7 +206,7 @@ static efi_status_t virt_efi_get_next_variable(unsigned long *name_size, } if (boot_used_size && !finished) { - unsigned long size; + unsigned long size = 0; u32 attr; efi_status_t s; void *tmp; -- cgit v0.10.2 From d6cbf35dac8a3dadb9103379820c96d7c85df3d9 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Tue, 14 May 2013 19:44:20 +0800 Subject: cgroup: initialize xattr before calling d_instantiate() cgroup_create_file() calls d_instantiate(), which may decide to look at the xattrs on the file. Smack always does this and SELinux can be configured to do so. But cgroup_add_file() didn't initialize xattrs before calling cgroup_create_file(), which finally leads to dereferencing NULL dentry->d_fsdata. This bug has been there since cgroup xattr was introduced. Cc: # 3.8.x Reported-by: Ivan Bulatovic Reported-by: Casey Schaufler Signed-off-by: Li Zefan Signed-off-by: Tejun Heo diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 2a99262..38b1365 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -2699,13 +2699,14 @@ static int cgroup_add_file(struct cgroup *cgrp, struct cgroup_subsys *subsys, goto out; } + cfe->type = (void *)cft; + cfe->dentry = dentry; + dentry->d_fsdata = cfe; + simple_xattrs_init(&cfe->xattrs); + mode = cgroup_file_mode(cft); error = cgroup_create_file(dentry, mode | S_IFREG, cgrp->root->sb); if (!error) { - cfe->type = (void *)cft; - cfe->dentry = dentry; - dentry->d_fsdata = cfe; - simple_xattrs_init(&cfe->xattrs); list_add_tail(&cfe->node, &parent->files); cfe = NULL; } -- cgit v0.10.2 From de82b923012ff8790bcfff381eb3ca9069d00f49 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Tue, 14 May 2013 11:25:39 -0400 Subject: fuse: allocate for_background dio requests based on io->async state Commit 8b41e671 introduced explicit background checking for fuse_req structures with BUG_ON() checks for the appropriate type of request in in the associated send functions. Commit bcba24cc introduced the ability to send dio requests as background requests but does not update the request allocation based on the type of I/O request. As a result, a BUG_ON() triggers in the fuse_request_send_background() background path if an async I/O is sent. Allocate a request based on the async state of the fuse_io_priv to avoid the BUG. Signed-off-by: Brian Foster Signed-off-by: Miklos Szeredi diff --git a/fs/fuse/file.c b/fs/fuse/file.c index d1c9b85..fe19132 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1278,7 +1278,10 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, iov_iter_init(&ii, iov, nr_segs, count, 0); - req = fuse_get_req(fc, fuse_iter_npages(&ii)); + if (io->async) + req = fuse_get_req_for_background(fc, fuse_iter_npages(&ii)); + else + req = fuse_get_req(fc, fuse_iter_npages(&ii)); if (IS_ERR(req)) return PTR_ERR(req); @@ -1314,7 +1317,11 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, break; if (count) { fuse_put_request(fc, req); - req = fuse_get_req(fc, fuse_iter_npages(&ii)); + if (io->async) + req = fuse_get_req_for_background(fc, + fuse_iter_npages(&ii)); + else + req = fuse_get_req(fc, fuse_iter_npages(&ii)); if (IS_ERR(req)) break; } -- cgit v0.10.2 From 8c3d3d4b12bf8de8c59fe1eb1bf866a8676ca309 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 14 May 2013 11:09:50 -0700 Subject: libata: update "Maintained by:" tags Jeff moved on to a greener pasture. s/Maintained by: Jeff Garzik/Maintained by: Tejun Heo/g Signed-off-by: Tejun Heo Cc: Jeff Garzik diff --git a/drivers/ata/acard-ahci.c b/drivers/ata/acard-ahci.c index 4e94ba2..9d0cf01 100644 --- a/drivers/ata/acard-ahci.c +++ b/drivers/ata/acard-ahci.c @@ -2,7 +2,7 @@ /* * acard-ahci.c - ACard AHCI SATA support * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 251e57d..2180876 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1,7 +1,7 @@ /* * ahci.c - AHCI SATA support * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index b830e6c..10b14d4 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -1,7 +1,7 @@ /* * ahci.h - Common AHCI SATA definitions and declarations * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 2f48123..26bda6e 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -1,7 +1,7 @@ /* * ata_piix.c - Intel PATA/SATA controllers * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 34c8216..a70ff15 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -1,7 +1,7 @@ /* * libahci.c - Common AHCI SATA low-level routines * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 63c743b..d35524c 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1,7 +1,7 @@ /* * libata-core.c - helper library for ATA * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index f9476fb..c69fcce 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1,7 +1,7 @@ /* * libata-eh.c - libata error handling * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index dd310b27..0101af5 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1,7 +1,7 @@ /* * libata-scsi.c - helper library for ATA * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index d8af325..b603720 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -1,7 +1,7 @@ /* * libata-sff.c - helper library for PCI IDE BMDMA * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c index 5053333..8ea6e6a 100644 --- a/drivers/ata/pdc_adma.c +++ b/drivers/ata/pdc_adma.c @@ -1,7 +1,7 @@ /* * pdc_adma.c - Pacific Digital Corporation ADMA * - * Maintained by: Mark Lord + * Maintained by: Tejun Heo * * Copyright 2005 Mark Lord * diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c index fb0dd87..958ba2a 100644 --- a/drivers/ata/sata_promise.c +++ b/drivers/ata/sata_promise.c @@ -1,7 +1,7 @@ /* * sata_promise.c - Promise SATA * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Mikael Pettersson * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c index a7b3167..0ae3ca4 100644 --- a/drivers/ata/sata_sil.c +++ b/drivers/ata/sata_sil.c @@ -1,7 +1,7 @@ /* * sata_sil.c - Silicon Image SATA * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c index 7b7127a..9947010 100644 --- a/drivers/ata/sata_sx4.c +++ b/drivers/ata/sata_sx4.c @@ -1,7 +1,7 @@ /* * sata_sx4.c - Promise SATA * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c index 5913ea9..87f056e 100644 --- a/drivers/ata/sata_via.c +++ b/drivers/ata/sata_via.c @@ -1,7 +1,7 @@ /* * sata_via.c - VIA Serial ATA controllers * - * Maintained by: Jeff Garzik + * Maintained by: Tejun Heo * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * -- cgit v0.10.2 From 867e1162068eb5632c829d453fd65d6089564f55 Mon Sep 17 00:00:00 2001 From: Emil Goode Date: Thu, 9 May 2013 22:39:26 +0200 Subject: bcache: Fix incompatible pointer type warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The function pointer release in struct block_device_operations should point to functions declared as void. Sparse warnings: drivers/md/bcache/super.c:656:27: warning: incorrect type in initializer (different base types) drivers/md/bcache/super.c:656:27: expected void ( *release )( ... ) drivers/md/bcache/super.c:656:27: got int ( static [toplevel] * )( ... ) drivers/md/bcache/super.c:656:2: warning: initialization from incompatible pointer type [enabled by default] drivers/md/bcache/super.c:656:2: warning: (near initialization for ‘bcache_ops.release’) [enabled by default] Signed-off-by: Emil Goode Signed-off-by: Kent Overstreet diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index c8046bc..b09beb2 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -634,11 +634,10 @@ static int open_dev(struct block_device *b, fmode_t mode) return 0; } -static int release_dev(struct gendisk *b, fmode_t mode) +static void release_dev(struct gendisk *b, fmode_t mode) { struct bcache_device *d = b->private_data; closure_put(&d->cl); - return 0; } static int ioctl_dev(struct block_device *b, fmode_t mode, -- cgit v0.10.2 From bbb1c3b5ae6c6286a5e018786be88f126d769543 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 13 May 2013 10:35:21 +0200 Subject: bcache: drop "select CLOSURES" The Kconfig entry for BCACHE selects CLOSURES. But there's no Kconfig symbol CLOSURES. That symbol was used in development versions of bcache, but was removed when the closures code was no longer provided as a kernel library. It can safely be dropped. Signed-off-by: Paul Bolle diff --git a/drivers/md/bcache/Kconfig b/drivers/md/bcache/Kconfig index 05c220d..f950c9d 100644 --- a/drivers/md/bcache/Kconfig +++ b/drivers/md/bcache/Kconfig @@ -1,7 +1,6 @@ config BCACHE tristate "Block device as cache" - select CLOSURES ---help--- Allows a block device to be used as cache for other devices; uses a btree for indexing and the layout is optimized for SSDs. -- cgit v0.10.2 From fe0a797a6b42d9ad0ed063eaef705da1eb3c8147 Mon Sep 17 00:00:00 2001 From: Gabriel Date: Wed, 24 Apr 2013 19:51:02 +0200 Subject: bcache: clarify free/available/unused space Don't describe bcache_available_percent as free space but as non-writeback space. Describe priority_stats in more detail and point to that for total bcache occupation. Signed-off-by: Gabriel de Perthuis Signed-off-by: Kent Overstreet diff --git a/Documentation/bcache.txt b/Documentation/bcache.txt index 77db880..b3a7e7d 100644 --- a/Documentation/bcache.txt +++ b/Documentation/bcache.txt @@ -319,7 +319,10 @@ cache<0..n> Symlink to each of the cache devices comprising this cache set. cache_available_percent - Percentage of cache device free. + Percentage of cache device which doesn't contain dirty data, and could + potentially be used for writeback. This doesn't mean this space isn't used + for clean cached data; the unused statistic (in priority_stats) is typically + much lower. clear_stats Clears the statistics associated with this cache @@ -423,8 +426,11 @@ nbuckets Total buckets in this cache priority_stats - Statistics about how recently data in the cache has been accessed. This can - reveal your working set size. + Statistics about how recently data in the cache has been accessed. + This can reveal your working set size. Unused is the percentage of + the cache that doesn't contain any data. Metadata is bcache's + metadata overhead. Average is the average priority of cache buckets. + Next is a list of quantiles with the priority threshold of each. written Sum of all data that has been written to the cache; comparison with -- cgit v0.10.2 From f59fce847fc8483508b5028c24e2b1e00523dd88 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Wed, 15 May 2013 00:11:26 -0700 Subject: bcache: Fix error handling in init code This code appears to have rotted... fix various bugs and do some refactoring. Signed-off-by: Kent Overstreet diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h index 340146d..d3e15b4 100644 --- a/drivers/md/bcache/bcache.h +++ b/drivers/md/bcache/bcache.h @@ -1241,7 +1241,7 @@ void bch_cache_set_stop(struct cache_set *); struct cache_set *bch_cache_set_alloc(struct cache_sb *); void bch_btree_cache_free(struct cache_set *); int bch_btree_cache_alloc(struct cache_set *); -void bch_writeback_init_cached_dev(struct cached_dev *); +void bch_cached_dev_writeback_init(struct cached_dev *); void bch_moving_init_cache_set(struct cache_set *); void bch_cache_allocator_exit(struct cache *ca); diff --git a/drivers/md/bcache/stats.c b/drivers/md/bcache/stats.c index 64e6794..b8730e7 100644 --- a/drivers/md/bcache/stats.c +++ b/drivers/md/bcache/stats.c @@ -93,24 +93,6 @@ static struct attribute *bch_stats_files[] = { }; static KTYPE(bch_stats); -static void scale_accounting(unsigned long data); - -void bch_cache_accounting_init(struct cache_accounting *acc, - struct closure *parent) -{ - kobject_init(&acc->total.kobj, &bch_stats_ktype); - kobject_init(&acc->five_minute.kobj, &bch_stats_ktype); - kobject_init(&acc->hour.kobj, &bch_stats_ktype); - kobject_init(&acc->day.kobj, &bch_stats_ktype); - - closure_init(&acc->cl, parent); - init_timer(&acc->timer); - acc->timer.expires = jiffies + accounting_delay; - acc->timer.data = (unsigned long) acc; - acc->timer.function = scale_accounting; - add_timer(&acc->timer); -} - int bch_cache_accounting_add_kobjs(struct cache_accounting *acc, struct kobject *parent) { @@ -244,3 +226,19 @@ void bch_mark_sectors_bypassed(struct search *s, int sectors) atomic_add(sectors, &dc->accounting.collector.sectors_bypassed); atomic_add(sectors, &s->op.c->accounting.collector.sectors_bypassed); } + +void bch_cache_accounting_init(struct cache_accounting *acc, + struct closure *parent) +{ + kobject_init(&acc->total.kobj, &bch_stats_ktype); + kobject_init(&acc->five_minute.kobj, &bch_stats_ktype); + kobject_init(&acc->hour.kobj, &bch_stats_ktype); + kobject_init(&acc->day.kobj, &bch_stats_ktype); + + closure_init(&acc->cl, parent); + init_timer(&acc->timer); + acc->timer.expires = jiffies + accounting_delay; + acc->timer.data = (unsigned long) acc; + acc->timer.function = scale_accounting; + add_timer(&acc->timer); +} diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index b09beb2..f88e2b6 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -731,8 +731,7 @@ static void bcache_device_free(struct bcache_device *d) if (d->c) bcache_device_detach(d); - - if (d->disk) + if (d->disk && d->disk->flags & GENHD_FL_UP) del_gendisk(d->disk); if (d->disk && d->disk->queue) blk_cleanup_queue(d->disk->queue); @@ -755,12 +754,9 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size) if (!(d->bio_split = bioset_create(4, offsetof(struct bbio, bio))) || !(d->unaligned_bvec = mempool_create_kmalloc_pool(1, sizeof(struct bio_vec) * BIO_MAX_PAGES)) || - bio_split_pool_init(&d->bio_split_hook)) - - return -ENOMEM; - - d->disk = alloc_disk(1); - if (!d->disk) + bio_split_pool_init(&d->bio_split_hook) || + !(d->disk = alloc_disk(1)) || + !(q = blk_alloc_queue(GFP_KERNEL))) return -ENOMEM; snprintf(d->disk->disk_name, DISK_NAME_LEN, "bcache%i", bcache_minor); @@ -770,10 +766,6 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size) d->disk->fops = &bcache_ops; d->disk->private_data = d; - q = blk_alloc_queue(GFP_KERNEL); - if (!q) - return -ENOMEM; - blk_queue_make_request(q, NULL); d->disk->queue = q; q->queuedata = d; @@ -998,14 +990,17 @@ static void cached_dev_free(struct closure *cl) mutex_lock(&bch_register_lock); - bd_unlink_disk_holder(dc->bdev, dc->disk.disk); + if (atomic_read(&dc->running)) + bd_unlink_disk_holder(dc->bdev, dc->disk.disk); bcache_device_free(&dc->disk); list_del(&dc->list); mutex_unlock(&bch_register_lock); if (!IS_ERR_OR_NULL(dc->bdev)) { - blk_sync_queue(bdev_get_queue(dc->bdev)); + if (dc->bdev->bd_disk) + blk_sync_queue(bdev_get_queue(dc->bdev)); + blkdev_put(dc->bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); } @@ -1027,73 +1022,67 @@ static void cached_dev_flush(struct closure *cl) static int cached_dev_init(struct cached_dev *dc, unsigned block_size) { - int err; + int ret; struct io *io; - - closure_init(&dc->disk.cl, NULL); - set_closure_fn(&dc->disk.cl, cached_dev_flush, system_wq); + struct request_queue *q = bdev_get_queue(dc->bdev); __module_get(THIS_MODULE); INIT_LIST_HEAD(&dc->list); + closure_init(&dc->disk.cl, NULL); + set_closure_fn(&dc->disk.cl, cached_dev_flush, system_wq); kobject_init(&dc->disk.kobj, &bch_cached_dev_ktype); - - bch_cache_accounting_init(&dc->accounting, &dc->disk.cl); - - err = bcache_device_init(&dc->disk, block_size); - if (err) - goto err; - - spin_lock_init(&dc->io_lock); - closure_init_unlocked(&dc->sb_write); INIT_WORK(&dc->detach, cached_dev_detach_finish); + closure_init_unlocked(&dc->sb_write); + INIT_LIST_HEAD(&dc->io_lru); + spin_lock_init(&dc->io_lock); + bch_cache_accounting_init(&dc->accounting, &dc->disk.cl); dc->sequential_merge = true; dc->sequential_cutoff = 4 << 20; - INIT_LIST_HEAD(&dc->io_lru); - dc->sb_bio.bi_max_vecs = 1; - dc->sb_bio.bi_io_vec = dc->sb_bio.bi_inline_vecs; - for (io = dc->io; io < dc->io + RECENT_IO; io++) { list_add(&io->lru, &dc->io_lru); hlist_add_head(&io->hash, dc->io_hash + RECENT_IO); } - bch_writeback_init_cached_dev(dc); + ret = bcache_device_init(&dc->disk, block_size); + if (ret) + return ret; + + set_capacity(dc->disk.disk, + dc->bdev->bd_part->nr_sects - dc->sb.data_offset); + + dc->disk.disk->queue->backing_dev_info.ra_pages = + max(dc->disk.disk->queue->backing_dev_info.ra_pages, + q->backing_dev_info.ra_pages); + + bch_cached_dev_request_init(dc); + bch_cached_dev_writeback_init(dc); return 0; -err: - bcache_device_stop(&dc->disk); - return err; } /* Cached device - bcache superblock */ -static const char *register_bdev(struct cache_sb *sb, struct page *sb_page, +static void register_bdev(struct cache_sb *sb, struct page *sb_page, struct block_device *bdev, struct cached_dev *dc) { char name[BDEVNAME_SIZE]; const char *err = "cannot allocate memory"; - struct gendisk *g; struct cache_set *c; - if (!dc || cached_dev_init(dc, sb->block_size << 9) != 0) - return err; - memcpy(&dc->sb, sb, sizeof(struct cache_sb)); - dc->sb_bio.bi_io_vec[0].bv_page = sb_page; dc->bdev = bdev; dc->bdev->bd_holder = dc; - g = dc->disk.disk; - - set_capacity(g, dc->bdev->bd_part->nr_sects - dc->sb.data_offset); - - g->queue->backing_dev_info.ra_pages = - max(g->queue->backing_dev_info.ra_pages, - bdev->bd_queue->backing_dev_info.ra_pages); + bio_init(&dc->sb_bio); + dc->sb_bio.bi_max_vecs = 1; + dc->sb_bio.bi_io_vec = dc->sb_bio.bi_inline_vecs; + dc->sb_bio.bi_io_vec[0].bv_page = sb_page; + get_page(sb_page); - bch_cached_dev_request_init(dc); + if (cached_dev_init(dc, sb->block_size << 9)) + goto err; err = "error creating kobject"; if (kobject_add(&dc->disk.kobj, &part_to_dev(bdev->bd_part)->kobj, @@ -1102,6 +1091,8 @@ static const char *register_bdev(struct cache_sb *sb, struct page *sb_page, if (bch_cache_accounting_add_kobjs(&dc->accounting, &dc->disk.kobj)) goto err; + pr_info("registered backing device %s", bdevname(bdev, name)); + list_add(&dc->list, &uncached_devices); list_for_each_entry(c, &bch_cache_sets, list) bch_cached_dev_attach(dc, c); @@ -1110,15 +1101,10 @@ static const char *register_bdev(struct cache_sb *sb, struct page *sb_page, BDEV_STATE(&dc->sb) == BDEV_STATE_STALE) bch_cached_dev_run(dc); - return NULL; + return; err: - kobject_put(&dc->disk.kobj); pr_notice("error opening %s: %s", bdevname(bdev, name), err); - /* - * Return NULL instead of an error because kobject_put() cleans - * everything up - */ - return NULL; + bcache_device_stop(&dc->disk); } /* Flash only volumes */ @@ -1716,20 +1702,11 @@ static int cache_alloc(struct cache_sb *sb, struct cache *ca) size_t free; struct bucket *b; - if (!ca) - return -ENOMEM; - __module_get(THIS_MODULE); kobject_init(&ca->kobj, &bch_cache_ktype); - memcpy(&ca->sb, sb, sizeof(struct cache_sb)); - INIT_LIST_HEAD(&ca->discards); - bio_init(&ca->sb_bio); - ca->sb_bio.bi_max_vecs = 1; - ca->sb_bio.bi_io_vec = ca->sb_bio.bi_inline_vecs; - bio_init(&ca->journal.bio); ca->journal.bio.bi_max_vecs = 8; ca->journal.bio.bi_io_vec = ca->journal.bio.bi_inline_vecs; @@ -1741,18 +1718,17 @@ static int cache_alloc(struct cache_sb *sb, struct cache *ca) !init_fifo(&ca->free_inc, free << 2, GFP_KERNEL) || !init_fifo(&ca->unused, free << 2, GFP_KERNEL) || !init_heap(&ca->heap, free << 3, GFP_KERNEL) || - !(ca->buckets = vmalloc(sizeof(struct bucket) * + !(ca->buckets = vzalloc(sizeof(struct bucket) * ca->sb.nbuckets)) || !(ca->prio_buckets = kzalloc(sizeof(uint64_t) * prio_buckets(ca) * 2, GFP_KERNEL)) || !(ca->disk_buckets = alloc_bucket_pages(GFP_KERNEL, ca)) || !(ca->alloc_workqueue = alloc_workqueue("bch_allocator", 0, 1)) || bio_split_pool_init(&ca->bio_split_hook)) - goto err; + return -ENOMEM; ca->prio_last_buckets = ca->prio_buckets + prio_buckets(ca); - memset(ca->buckets, 0, ca->sb.nbuckets * sizeof(struct bucket)); for_each_bucket(b, ca) atomic_set(&b->pin, 0); @@ -1765,22 +1741,28 @@ err: return -ENOMEM; } -static const char *register_cache(struct cache_sb *sb, struct page *sb_page, +static void register_cache(struct cache_sb *sb, struct page *sb_page, struct block_device *bdev, struct cache *ca) { char name[BDEVNAME_SIZE]; const char *err = "cannot allocate memory"; - if (cache_alloc(sb, ca) != 0) - return err; - - ca->sb_bio.bi_io_vec[0].bv_page = sb_page; + memcpy(&ca->sb, sb, sizeof(struct cache_sb)); ca->bdev = bdev; ca->bdev->bd_holder = ca; + bio_init(&ca->sb_bio); + ca->sb_bio.bi_max_vecs = 1; + ca->sb_bio.bi_io_vec = ca->sb_bio.bi_inline_vecs; + ca->sb_bio.bi_io_vec[0].bv_page = sb_page; + get_page(sb_page); + if (blk_queue_discard(bdev_get_queue(ca->bdev))) ca->discard = CACHE_DISCARD(&ca->sb); + if (cache_alloc(sb, ca) != 0) + goto err; + err = "error creating kobject"; if (kobject_add(&ca->kobj, &part_to_dev(bdev->bd_part)->kobj, "bcache")) goto err; @@ -1790,15 +1772,10 @@ static const char *register_cache(struct cache_sb *sb, struct page *sb_page, goto err; pr_info("registered cache device %s", bdevname(bdev, name)); - - return NULL; + return; err: + pr_notice("error opening %s: %s", bdevname(bdev, name), err); kobject_put(&ca->kobj); - pr_info("error opening %s: %s", bdevname(bdev, name), err); - /* Return NULL instead of an error because kobject_put() cleans - * everything up - */ - return NULL; } /* Global interfaces/init */ @@ -1832,12 +1809,15 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr, bdev = blkdev_get_by_path(strim(path), FMODE_READ|FMODE_WRITE|FMODE_EXCL, sb); - if (bdev == ERR_PTR(-EBUSY)) - err = "device busy"; - - if (IS_ERR(bdev) || - set_blocksize(bdev, 4096)) + if (IS_ERR(bdev)) { + if (bdev == ERR_PTR(-EBUSY)) + err = "device busy"; goto err; + } + + err = "failed to set blocksize"; + if (set_blocksize(bdev, 4096)) + goto err_close; err = read_super(sb, bdev, &sb_page); if (err) @@ -1845,33 +1825,33 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr, if (SB_IS_BDEV(sb)) { struct cached_dev *dc = kzalloc(sizeof(*dc), GFP_KERNEL); + if (!dc) + goto err_close; - err = register_bdev(sb, sb_page, bdev, dc); + register_bdev(sb, sb_page, bdev, dc); } else { struct cache *ca = kzalloc(sizeof(*ca), GFP_KERNEL); + if (!ca) + goto err_close; - err = register_cache(sb, sb_page, bdev, ca); + register_cache(sb, sb_page, bdev, ca); } - - if (err) { - /* register_(bdev|cache) will only return an error if they - * didn't get far enough to create the kobject - if they did, - * the kobject destructor will do this cleanup. - */ +out: + if (sb_page) put_page(sb_page); -err_close: - blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); -err: - if (attr != &ksysfs_register_quiet) - pr_info("error opening %s: %s", path, err); - ret = -EINVAL; - } - kfree(sb); kfree(path); mutex_unlock(&bch_register_lock); module_put(THIS_MODULE); return ret; + +err_close: + blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); +err: + if (attr != &ksysfs_register_quiet) + pr_info("error opening %s: %s", path, err); + ret = -EINVAL; + goto out; } static int bcache_reboot(struct notifier_block *n, unsigned long code, void *x) diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index 93e7e31..2714ed3 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -375,7 +375,7 @@ err: refill_dirty(cl); } -void bch_writeback_init_cached_dev(struct cached_dev *dc) +void bch_cached_dev_writeback_init(struct cached_dev *dc) { closure_init_unlocked(&dc->writeback); init_rwsem(&dc->writeback_lock); -- cgit v0.10.2 From 974a51a245c2c8bece21cf2d3cbfc8261260f729 Mon Sep 17 00:00:00 2001 From: Sam Bradshaw Date: Wed, 15 May 2013 10:04:34 +0200 Subject: mtip32xx: Fix NULL pointer dereference during module unload An open file-handle to one or more of the driver exported debugfs nodes causes raciness in recursive removal during module unload; sometimes a stale parent dentry is dereferenced when more than 1 pci device is present. Signed-off-by: Sam Bradshaw Signed-off-by: Jens Axboe diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 847107e..e366c74 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3002,7 +3002,8 @@ static int mtip_hw_debugfs_init(struct driver_data *dd) static void mtip_hw_debugfs_exit(struct driver_data *dd) { - debugfs_remove_recursive(dd->dfs_node); + if (dd->dfs_node) + debugfs_remove_recursive(dd->dfs_node); } -- cgit v0.10.2 From 093c959307f2f5af72b24fdc4af7d4d0263f6eea Mon Sep 17 00:00:00 2001 From: Sam Bradshaw Date: Wed, 15 May 2013 10:09:05 +0200 Subject: mtip32xx: Correctly handle bio->bi_idx != 0 conditions Stacking drivers may append bvecs to existing bio's, resulting in non-zero bi_idx conditions. This patch counts the loops of bio_for_each_segment() rather than inheriting the bi_idx value to pass as a segment count to the hardware submission routine. Signed-off-by: Sam Bradshaw Signed-off-by: Jens Axboe diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index e366c74..20dd52a 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3864,7 +3864,7 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio) struct driver_data *dd = queue->queuedata; struct scatterlist *sg; struct bio_vec *bvec; - int nents = 0; + int i, nents = 0; int tag = 0, unaligned = 0; if (unlikely(dd->dd_flag & MTIP_DDF_STOP_IO)) { @@ -3922,11 +3922,12 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio) } /* Create the scatter list for this bio. */ - bio_for_each_segment(bvec, bio, nents) { + bio_for_each_segment(bvec, bio, i) { sg_set_page(&sg[nents], bvec->bv_page, bvec->bv_len, bvec->bv_offset); + nents++; } /* Issue the read/write. */ -- cgit v0.10.2 From 61bb3fea44b71dd9935227920b036fdb96936f4d Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Tue, 14 May 2013 14:37:10 +0200 Subject: drm/gma500: Add fb gtt offset to fb base Old code assumed framebuffer starts at base of stolen memory. Since the addition of hardware cursors, this might not be true anymore so add the gtt offset to the calculation. Reported-by: Holger Schurig Tested-by: Holger Schurig Signed-off-by: Patrik Jakobsson diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c index 1534e22..8b1b6d9 100644 --- a/drivers/gpu/drm/gma500/framebuffer.c +++ b/drivers/gpu/drm/gma500/framebuffer.c @@ -121,8 +121,8 @@ static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) unsigned long address; int ret; unsigned long pfn; - /* FIXME: assumes fb at stolen base which may not be true */ - unsigned long phys_addr = (unsigned long)dev_priv->stolen_base; + unsigned long phys_addr = (unsigned long)dev_priv->stolen_base + + psbfb->gtt->offset; page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT); -- cgit v0.10.2 From fca8c90d519dedd4f4b19901d005c243f7f0bf2e Mon Sep 17 00:00:00 2001 From: "Chew, Chiau Ee" Date: Thu, 16 May 2013 15:33:29 +0800 Subject: ata_piix: add PCI IDs for Intel BayTail Adds IDE-mode SATA Device IDs for the Intel BayTrail platform. Signed-off-by: Chew, Chiau Ee Signed-off-by: Artem Bityutskiy Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 26bda6e..9a8a674 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -151,6 +151,7 @@ enum piix_controller_ids { piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */ ich8_sata_snb, ich8_2port_sata_snb, + ich8_2port_sata_byt, }; struct piix_map_db { @@ -334,6 +335,9 @@ static const struct pci_device_id piix_pci_tbl[] = { { 0x8086, 0x8d60, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, /* SATA Controller IDE (Wellsburg) */ { 0x8086, 0x8d68, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, + /* SATA Controller IDE (BayTrail) */ + { 0x8086, 0x0F20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt }, + { 0x8086, 0x0F21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt }, { } /* terminate list */ }; @@ -441,6 +445,7 @@ static const struct piix_map_db *piix_map_db_table[] = { [tolapai_sata] = &tolapai_map_db, [ich8_sata_snb] = &ich8_map_db, [ich8_2port_sata_snb] = &ich8_2port_map_db, + [ich8_2port_sata_byt] = &ich8_2port_map_db, }; static struct pci_bits piix_enable_bits[] = { @@ -1254,6 +1259,16 @@ static struct ata_port_info piix_port_info[] = { .udma_mask = ATA_UDMA6, .port_ops = &piix_sata_ops, }, + + [ich8_2port_sata_byt] = + { + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA6, + .port_ops = &piix_sata_ops, + }, + }; #define AHCI_PCI_BAR 5 -- cgit v0.10.2 From c60855cdb976c632b3bf8922eeab8a0e78edfc04 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Fri, 17 May 2013 15:47:20 +0800 Subject: blkpm: avoid sleep when holding queue lock In blk_post_runtime_resume, an autosuspend request will be initiated for the device. Since we are holding the queue lock, we can't sleep and thus we should use the async version to initiate an autosuspend, i.e. pm_request_suspend instead of pm_runtime_suspend, which might sleep. Signed-off-by: Aaron Lu Signed-off-by: Jens Axboe diff --git a/block/blk-core.c b/block/blk-core.c index 33c33bc..d5745b5 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -3164,7 +3164,7 @@ void blk_post_runtime_resume(struct request_queue *q, int err) q->rpm_status = RPM_ACTIVE; __blk_run_queue(q); pm_runtime_mark_last_busy(q->dev); - pm_runtime_autosuspend(q->dev); + pm_request_autosuspend(q->dev); } else { q->rpm_status = RPM_SUSPENDED; } -- cgit v0.10.2 From 6211dd12da609bc6893b9c3182630b494737ec4b Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Fri, 17 May 2013 13:43:04 +0200 Subject: mac80211: fix direct probe auth We send direct probe to broadcast address, as some APs do not respond to unicast PROBE frames when unassociated. Broadcast frames are not acked, so we can not use that for trigger MLME state machine, but we need to use old timeout mechanism. This fixes authentication timed out like below: [ 1024.671974] wlan6: authenticate with 54:e6:fc:98:63:fe [ 1024.694125] wlan6: direct probe to 54:e6:fc:98:63:fe (try 1/3) [ 1024.695450] wlan6: direct probe to 54:e6:fc:98:63:fe (try 2/3) [ 1024.700586] wlan6: send auth to 54:e6:fc:98:63:fe (try 3/3) [ 1024.701441] wlan6: authentication with 54:e6:fc:98:63:fe timed out With fix, we have: [ 4524.198978] wlan6: authenticate with 54:e6:fc:98:63:fe [ 4524.220692] wlan6: direct probe to 54:e6:fc:98:63:fe (try 1/3) [ 4524.421784] wlan6: send auth to 54:e6:fc:98:63:fe (try 2/3) [ 4524.423272] wlan6: authenticated [ 4524.423811] wlan6: associate with 54:e6:fc:98:63:fe (try 1/3) [ 4524.427492] wlan6: RX AssocResp from 54:e6:fc:98:63:fe (capab=0x431 status=0 aid=1) Cc: stable@vger.kernel.org # 3.9 Signed-off-by: Stanislaw Gruszka Signed-off-by: Johannes Berg diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index a46e490..a8c2130 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -3321,10 +3321,6 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) if (WARN_ON_ONCE(!auth_data)) return -EINVAL; - if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) - tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | - IEEE80211_TX_INTFL_MLME_CONN_TX; - auth_data->tries++; if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { @@ -3358,6 +3354,10 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) auth_data->expected_transaction = trans; } + if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) + tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | + IEEE80211_TX_INTFL_MLME_CONN_TX; + ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, auth_data->data, auth_data->data_len, auth_data->bss->bssid, @@ -3381,12 +3381,12 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) * will not answer to direct packet in unassociated state. */ ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], - NULL, 0, (u32) -1, true, tx_flags, + NULL, 0, (u32) -1, true, 0, auth_data->bss->channel, false); rcu_read_unlock(); } - if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { + if (tx_flags == 0) { auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; ifmgd->auth_data->timeout_started = true; run_again(ifmgd, auth_data->timeout); -- cgit v0.10.2 From dfbe403c5bc859620a2823ec1753369ac11a8bf6 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 17 May 2013 13:12:52 +0100 Subject: spi: Move mailing list to vger Given the spam and other problems with the existing list move to a newly created list on vger. Signed-off-by: Mark Brown diff --git a/MAINTAINERS b/MAINTAINERS index 3d7782b..d45a7d1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7589,7 +7589,7 @@ F: drivers/clk/spear/ SPI SUBSYSTEM M: Mark Brown M: Grant Likely -L: spi-devel-general@lists.sourceforge.net +L: linux-spi@vger.kernel.org T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git Q: http://patchwork.kernel.org/project/spi-devel-general/list/ S: Maintained -- cgit v0.10.2 From 76e0310c2d5a4fb62f674af7dad16f544950fc13 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Tue, 14 May 2013 08:32:13 +0530 Subject: NVMe: Remove redundant version.h header include version.h header inclusion is not necessary as detected by checkversion.pl. Signed-off-by: Sachin Kamat Acked-by: Vishal Verma Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-scsi.c b/drivers/block/nvme-scsi.c index fed54b0..64bde68 100644 --- a/drivers/block/nvme-scsi.c +++ b/drivers/block/nvme-scsi.c @@ -44,7 +44,6 @@ #include #include #include -#include #include #include -- cgit v0.10.2 From 710a143dd870cd660b5ae26bb94b6da854376e91 Mon Sep 17 00:00:00 2001 From: Vishal Verma Date: Mon, 13 May 2013 14:55:18 -0600 Subject: NVMe: Fix a signedness bug in nvme_trans_modesel_get_mp nvme_trans_modesel_get_mp() was defined with a unsigned return type, but can return signed values. Reported-by: Dan Carpenter Signed-off-by: Vishal Verma Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-scsi.c b/drivers/block/nvme-scsi.c index 64bde68..102de2f 100644 --- a/drivers/block/nvme-scsi.c +++ b/drivers/block/nvme-scsi.c @@ -1653,7 +1653,7 @@ static void nvme_trans_modesel_save_bd(struct nvme_ns *ns, u8 *parm_list, } } -static u16 nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, +static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *mode_page, u8 page_code) { int res = SNTI_TRANSLATION_SUCCESS; -- cgit v0.10.2 From 5be37bf9c17ffad0590a4044dbb110fe08066923 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 13 May 2013 18:00:42 +0300 Subject: MAINTAINERS: update NVM EXPRESS DRIVER file list There isn't an nvme.c file any more. It has been split into multiple files. Signed-off-by: Dan Carpenter Signed-off-by: Matthew Wilcox diff --git a/MAINTAINERS b/MAINTAINERS index 3a7b07f5..748a96d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5740,7 +5740,7 @@ M: Matthew Wilcox L: linux-nvme@lists.infradead.org T: git git://git.infradead.org/users/willy/linux-nvme.git S: Supported -F: drivers/block/nvme.c +F: drivers/block/nvme* F: include/linux/nvme.h OMAP SUPPORT -- cgit v0.10.2 From 5460fc03105fbed01fe27aa572d9f65bb410a61d Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 13 May 2013 17:59:50 +0300 Subject: NVMe: check for integer overflow in nvme_map_user_pages() You need to have CAP_SYS_ADMIN to trigger this overflow but it makes the static checkers complain so we should fix it. The worry is that "length" comes from copy_from_user() so we need to check that "length + offset" can't overflow. I also changed the min_t() cast to be unsigned instead of signed. Now that we cap "length" to INT_MAX it doesn't make a difference, but it's a little easier for reviewers to know that large values aren't cast to negative. Signed-off-by: Dan Carpenter Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 8efdfaa..4376375 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1206,7 +1206,7 @@ struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write, if (addr & 3) return ERR_PTR(-EINVAL); - if (!length) + if (!length || length > INT_MAX - PAGE_SIZE) return ERR_PTR(-EINVAL); offset = offset_in_page(addr); @@ -1227,7 +1227,8 @@ struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write, sg_init_table(sg, count); for (i = 0; i < count; i++) { sg_set_page(&sg[i], pages[i], - min_t(int, length, PAGE_SIZE - offset), offset); + min_t(unsigned, length, PAGE_SIZE - offset), + offset); length -= (PAGE_SIZE - offset); offset = 0; } -- cgit v0.10.2 From 1287dabd345f447bbe0f7a99fc95ab89bcfc0f5d Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 13 May 2013 22:29:04 +0800 Subject: NVMe: fix error return code in nvme_submit_bio_queue() nvme_submit_flush_data() might overwrite the initialisation of the return value with 0, so move the -ENOMEM setting close to the usage. Signed-off-by: Wei Yongjun Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 4376375..d783f15 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -629,7 +629,7 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns, struct nvme_command *cmnd; struct nvme_iod *iod; enum dma_data_direction dma_dir; - int cmdid, length, result = -ENOMEM; + int cmdid, length, result; u16 control; u32 dsmgmt; int psegs = bio_phys_segments(ns->queue, bio); @@ -640,6 +640,7 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns, return result; } + result = -ENOMEM; iod = nvme_alloc_iod(psegs, bio->bi_size, GFP_ATOMIC); if (!iod) goto nomem; -- cgit v0.10.2 From 1fbeeba35e1a25f1a7598e0f5d1433c18084e96a Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 17 May 2013 15:08:41 +0200 Subject: block: remove refs to XD disks from documentation Commit d1a6f4f19728d6e90480e53601a90fc9f6a348ad "block: delete super ancient PC-XT driver for 1980's hardware" deleted the XD disk driver, but there are still a few references to it in the documentation directory. Delete the remnants and thus also free up the major block device 13 for reuse. Cc: Paul Gortmaker Cc: Jens Axboe Signed-off-by: Linus Walleij Signed-off-by: Jens Axboe diff --git a/Documentation/devices.txt b/Documentation/devices.txt index 08f01e7..b901591 100644 --- a/Documentation/devices.txt +++ b/Documentation/devices.txt @@ -498,12 +498,8 @@ Your cooperation is appreciated. Each device type has 5 bits (32 minors). - 13 block 8-bit MFM/RLL/IDE controller - 0 = /dev/xda First XT disk whole disk - 64 = /dev/xdb Second XT disk whole disk - - Partitions are handled in the same way as IDE disks - (see major number 3). + 13 block Previously used for the XT disk (/dev/xdN) + Deleted in kernel v3.9. 14 char Open Sound System (OSS) 0 = /dev/mixer Mixer control diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index c3bfacb..5469dbf 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -3330,9 +3330,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. plus one apbt timer for broadcast timer. x86_mrst_timer=apbt_only | lapic_and_apbt - xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks. - xd_geo= See header of drivers/block/xd.c. - xen_emul_unplug= [HW,X86,XEN] Unplug Xen emulated devices Format: [unplug0,][unplug1] diff --git a/Documentation/m68k/kernel-options.txt b/Documentation/m68k/kernel-options.txt index 97d45f2..eaf32a1 100644 --- a/Documentation/m68k/kernel-options.txt +++ b/Documentation/m68k/kernel-options.txt @@ -80,8 +80,6 @@ Valid names are: /dev/sdd: -> 0x0830 (forth SCSI disk) /dev/sde: -> 0x0840 (fifth SCSI disk) /dev/fd : -> 0x0200 (floppy disk) - /dev/xda: -> 0x0c00 (first XT disk, unused in Linux/m68k) - /dev/xdb: -> 0x0c40 (second XT disk, unused in Linux/m68k) The name must be followed by a decimal number, that stands for the partition number. Internally, the value of the number is just -- cgit v0.10.2 From 053ab702cc2702f25a97ead087ed344b864785b7 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Tue, 30 Apr 2013 11:19:38 -0600 Subject: NVMe: Do not cancel command multiple times Cancelling an already cancelled command does not do anything, so check the command context before cancelling it, continuing if had already been cancelled so we do not log the same problem every second if a device stops responding. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index d783f15..42abf72 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -978,6 +978,8 @@ static void nvme_cancel_ios(struct nvme_queue *nvmeq, bool timeout) if (timeout && !time_after(now, info[cmdid].timeout)) continue; + if (info[cmdid].ctx == CMD_CTX_CANCELLED) + continue; dev_warn(nvmeq->q_dmadev, "Cancelling I/O %d\n", cmdid); ctx = cancel_cmdid(nvmeq, cmdid, &fn); fn(nvmeq->dev, ctx, &cqe); -- cgit v0.10.2 From 14d2f38df67fadee34625fcbd282ee22514c4846 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 15 May 2013 16:28:33 -0500 Subject: libceph: must hold mutex for reset_changed_osds() An osd client has a red-black tree describing its osds, and occasionally we would get crashes due to one of these trees tree becoming corrupt somehow. The problem turned out to be that reset_changed_osds() was being called without protection of the osd client request mutex. That function would call __reset_osd() for any osd that had changed, and __reset_osd() would call __remove_osd() for any osd with no outstanding requests, and finally __remove_osd() would remove the corresponding entry from the red-black tree. Thus, the tree was getting modified without having any lock protection, and was vulnerable to problems due to concurrent updates. This appears to be the only osd tree updating path that has this problem. It can be fairly easily fixed by moving the call up a few lines, to just before the request mutex gets dropped in kick_requests(). This resolves: http://tracker.ceph.com/issues/5043 Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Alex Elder Reviewed-by: Sage Weil diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index d5953b8..3a246a6 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1675,13 +1675,13 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend) __register_request(osdc, req); __unregister_linger_request(osdc, req); } + reset_changed_osds(osdc); mutex_unlock(&osdc->request_mutex); if (needmap) { dout("%d requests for down osds, need new map\n", needmap); ceph_monc_request_next_osdmap(&osdc->client->monc); } - reset_changed_osds(osdc); } -- cgit v0.10.2 From c420276a532a10ef59849adc2681f45306166b89 Mon Sep 17 00:00:00 2001 From: Jim Schutt Date: Wed, 15 May 2013 13:03:35 -0500 Subject: ceph: add cpu_to_le32() calls when encoding a reconnect capability In his review, Alex Elder mentioned that he hadn't checked that num_fcntl_locks and num_flock_locks were properly decoded on the server side, from a le32 over-the-wire type to a cpu type. I checked, and AFAICS it is done; those interested can consult Locker::_do_cap_update() in src/mds/Locker.cc and src/include/encoding.h in the Ceph server code (git://github.com/ceph/ceph). I also checked the server side for flock_len decoding, and I believe that also happens correctly, by virtue of having been declared __le32 in struct ceph_mds_cap_reconnect, in src/include/ceph_fs.h. Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Jim Schutt Reviewed-by: Alex Elder diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index 202dd3d6..a80ed18 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -206,10 +206,12 @@ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, int err = 0; int seen_fcntl = 0; int seen_flock = 0; + __le32 nlocks; dout("encoding %d flock and %d fcntl locks", num_flock_locks, num_fcntl_locks); - err = ceph_pagelist_append(pagelist, &num_fcntl_locks, sizeof(u32)); + nlocks = cpu_to_le32(num_fcntl_locks); + err = ceph_pagelist_append(pagelist, &nlocks, sizeof(nlocks)); if (err) goto fail; for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { @@ -229,7 +231,8 @@ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, goto fail; } - err = ceph_pagelist_append(pagelist, &num_flock_locks, sizeof(u32)); + nlocks = cpu_to_le32(num_flock_locks); + err = ceph_pagelist_append(pagelist, &nlocks, sizeof(nlocks)); if (err) goto fail; for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 4f22671..d9ca152 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2485,7 +2485,7 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap, lock_flocks(); ceph_count_locks(inode, &num_fcntl_locks, &num_flock_locks); - rec.v2.flock_len = (2*sizeof(u32) + + rec.v2.flock_len = cpu_to_le32(2*sizeof(u32) + (num_fcntl_locks+num_flock_locks) * sizeof(struct ceph_filelock)); unlock_flocks(); -- cgit v0.10.2 From 39be95e9c8c0b5668c9f8806ffe29bf9f4bc0f40 Mon Sep 17 00:00:00 2001 From: Jim Schutt Date: Wed, 15 May 2013 13:03:35 -0500 Subject: ceph: ceph_pagelist_append might sleep while atomic Ceph's encode_caps_cb() worked hard to not call __page_cache_alloc() while holding a lock, but it's spoiled because ceph_pagelist_addpage() always calls kmap(), which might sleep. Here's the result: [13439.295457] ceph: mds0 reconnect start [13439.300572] BUG: sleeping function called from invalid context at include/linux/highmem.h:58 [13439.309243] in_atomic(): 1, irqs_disabled(): 0, pid: 12059, name: kworker/1:1 . . . [13439.376225] Call Trace: [13439.378757] [] __might_sleep+0xfc/0x110 [13439.384353] [] ceph_pagelist_append+0x120/0x1b0 [libceph] [13439.391491] [] ceph_encode_locks+0x89/0x190 [ceph] [13439.398035] [] ? _raw_spin_lock+0x49/0x50 [13439.403775] [] ? lock_flocks+0x15/0x20 [13439.409277] [] encode_caps_cb+0x41f/0x4a0 [ceph] [13439.415622] [] ? igrab+0x28/0x70 [13439.420610] [] ? iterate_session_caps+0xe8/0x250 [ceph] [13439.427584] [] iterate_session_caps+0x115/0x250 [ceph] [13439.434499] [] ? set_request_path_attr+0x2d0/0x2d0 [ceph] [13439.441646] [] send_mds_reconnect+0x238/0x450 [ceph] [13439.448363] [] ? ceph_mdsmap_decode+0x5e2/0x770 [ceph] [13439.455250] [] check_new_map+0x352/0x500 [ceph] [13439.461534] [] ceph_mdsc_handle_map+0x1bd/0x260 [ceph] [13439.468432] [] ? mutex_unlock+0xe/0x10 [13439.473934] [] extra_mon_dispatch+0x22/0x30 [ceph] [13439.480464] [] dispatch+0xbc/0x110 [libceph] [13439.486492] [] process_message+0x1ad/0x1d0 [libceph] [13439.493190] [] ? read_partial_message+0x3e8/0x520 [libceph] . . . [13439.587132] ceph: mds0 reconnect success [13490.720032] ceph: mds0 caps stale [13501.235257] ceph: mds0 recovery completed [13501.300419] ceph: mds0 caps renewed Fix it up by encoding locks into a buffer first, and when the number of encoded locks is stable, copy that into a ceph_pagelist. [elder@inktank.com: abbreviated the stack info a bit.] Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Jim Schutt Reviewed-by: Alex Elder diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index a80ed18..ebbf680 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -191,29 +191,23 @@ void ceph_count_locks(struct inode *inode, int *fcntl_count, int *flock_count) } /** - * Encode the flock and fcntl locks for the given inode into the pagelist. - * Format is: #fcntl locks, sequential fcntl locks, #flock locks, - * sequential flock locks. - * Must be called with lock_flocks() already held. - * If we encounter more of a specific lock type than expected, - * we return the value 1. + * Encode the flock and fcntl locks for the given inode into the ceph_filelock + * array. Must be called with lock_flocks() already held. + * If we encounter more of a specific lock type than expected, return -ENOSPC. */ -int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, - int num_fcntl_locks, int num_flock_locks) +int ceph_encode_locks_to_buffer(struct inode *inode, + struct ceph_filelock *flocks, + int num_fcntl_locks, int num_flock_locks) { struct file_lock *lock; - struct ceph_filelock cephlock; int err = 0; int seen_fcntl = 0; int seen_flock = 0; - __le32 nlocks; + int l = 0; dout("encoding %d flock and %d fcntl locks", num_flock_locks, num_fcntl_locks); - nlocks = cpu_to_le32(num_fcntl_locks); - err = ceph_pagelist_append(pagelist, &nlocks, sizeof(nlocks)); - if (err) - goto fail; + for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { if (lock->fl_flags & FL_POSIX) { ++seen_fcntl; @@ -221,20 +215,12 @@ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, err = -ENOSPC; goto fail; } - err = lock_to_ceph_filelock(lock, &cephlock); + err = lock_to_ceph_filelock(lock, &flocks[l]); if (err) goto fail; - err = ceph_pagelist_append(pagelist, &cephlock, - sizeof(struct ceph_filelock)); + ++l; } - if (err) - goto fail; } - - nlocks = cpu_to_le32(num_flock_locks); - err = ceph_pagelist_append(pagelist, &nlocks, sizeof(nlocks)); - if (err) - goto fail; for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { if (lock->fl_flags & FL_FLOCK) { ++seen_flock; @@ -242,19 +228,51 @@ int ceph_encode_locks(struct inode *inode, struct ceph_pagelist *pagelist, err = -ENOSPC; goto fail; } - err = lock_to_ceph_filelock(lock, &cephlock); + err = lock_to_ceph_filelock(lock, &flocks[l]); if (err) goto fail; - err = ceph_pagelist_append(pagelist, &cephlock, - sizeof(struct ceph_filelock)); + ++l; } - if (err) - goto fail; } fail: return err; } +/** + * Copy the encoded flock and fcntl locks into the pagelist. + * Format is: #fcntl locks, sequential fcntl locks, #flock locks, + * sequential flock locks. + * Returns zero on success. + */ +int ceph_locks_to_pagelist(struct ceph_filelock *flocks, + struct ceph_pagelist *pagelist, + int num_fcntl_locks, int num_flock_locks) +{ + int err = 0; + __le32 nlocks; + + nlocks = cpu_to_le32(num_fcntl_locks); + err = ceph_pagelist_append(pagelist, &nlocks, sizeof(nlocks)); + if (err) + goto out_fail; + + err = ceph_pagelist_append(pagelist, flocks, + num_fcntl_locks * sizeof(*flocks)); + if (err) + goto out_fail; + + nlocks = cpu_to_le32(num_flock_locks); + err = ceph_pagelist_append(pagelist, &nlocks, sizeof(nlocks)); + if (err) + goto out_fail; + + err = ceph_pagelist_append(pagelist, + &flocks[num_fcntl_locks], + num_flock_locks * sizeof(*flocks)); +out_fail: + return err; +} + /* * Given a pointer to a lock, convert it to a ceph filelock */ diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index d9ca152..4d29203 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2478,39 +2478,44 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap, if (recon_state->flock) { int num_fcntl_locks, num_flock_locks; - struct ceph_pagelist_cursor trunc_point; - - ceph_pagelist_set_cursor(pagelist, &trunc_point); - do { - lock_flocks(); - ceph_count_locks(inode, &num_fcntl_locks, - &num_flock_locks); - rec.v2.flock_len = cpu_to_le32(2*sizeof(u32) + - (num_fcntl_locks+num_flock_locks) * - sizeof(struct ceph_filelock)); - unlock_flocks(); - - /* pre-alloc pagelist */ - ceph_pagelist_truncate(pagelist, &trunc_point); - err = ceph_pagelist_append(pagelist, &rec, reclen); - if (!err) - err = ceph_pagelist_reserve(pagelist, - rec.v2.flock_len); - - /* encode locks */ - if (!err) { - lock_flocks(); - err = ceph_encode_locks(inode, - pagelist, - num_fcntl_locks, - num_flock_locks); - unlock_flocks(); - } - } while (err == -ENOSPC); + struct ceph_filelock *flocks; + +encode_again: + lock_flocks(); + ceph_count_locks(inode, &num_fcntl_locks, &num_flock_locks); + unlock_flocks(); + flocks = kmalloc((num_fcntl_locks+num_flock_locks) * + sizeof(struct ceph_filelock), GFP_NOFS); + if (!flocks) { + err = -ENOMEM; + goto out_free; + } + lock_flocks(); + err = ceph_encode_locks_to_buffer(inode, flocks, + num_fcntl_locks, + num_flock_locks); + unlock_flocks(); + if (err) { + kfree(flocks); + if (err == -ENOSPC) + goto encode_again; + goto out_free; + } + /* + * number of encoded locks is stable, so copy to pagelist + */ + rec.v2.flock_len = cpu_to_le32(2*sizeof(u32) + + (num_fcntl_locks+num_flock_locks) * + sizeof(struct ceph_filelock)); + err = ceph_pagelist_append(pagelist, &rec, reclen); + if (!err) + err = ceph_locks_to_pagelist(flocks, pagelist, + num_fcntl_locks, + num_flock_locks); + kfree(flocks); } else { err = ceph_pagelist_append(pagelist, &rec, reclen); } - out_free: kfree(path); out_dput: diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 8696be2..7ccfdb4 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -822,8 +822,13 @@ extern const struct export_operations ceph_export_ops; extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); -extern int ceph_encode_locks(struct inode *i, struct ceph_pagelist *p, - int p_locks, int f_locks); +extern int ceph_encode_locks_to_buffer(struct inode *inode, + struct ceph_filelock *flocks, + int num_fcntl_locks, + int num_flock_locks); +extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, + struct ceph_pagelist *pagelist, + int num_fcntl_locks, int num_flock_locks); extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c); /* debugfs.c */ -- cgit v0.10.2 From 7262cfca430a1a0e0707149af29ae86bc0ded230 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 16 May 2013 15:04:20 -0500 Subject: rbd: don't destroy ceph_opts in rbd_add() Whether rbd_client_create() successfully creates a new client or not, it takes responsibility for getting the ceph_opts structure it's passed destroyed. If successful, the structure becomes associated with the created client; if not, rbd_client_create() will destroy it. Previously, rbd_get_client() would call ceph_destroy_options() if rbd_get_client() failed, and that meant it got called twice. That led freeing various pointers more than once, which is never a good idea. This resolves: http://tracker.ceph.com/issues/4559 Cc: stable@vger.kernel.org # 3.8+ Reported-by: Dan van der Ster Signed-off-by: Alex Elder Reviewed-by: Josh Durgin diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 6b872f2..5f64ba7 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -521,8 +521,8 @@ static const struct block_device_operations rbd_bd_ops = { }; /* - * Initialize an rbd client instance. - * We own *ceph_opts. + * Initialize an rbd client instance. Success or not, this function + * consumes ceph_opts. */ static struct rbd_client *rbd_client_create(struct ceph_options *ceph_opts) { @@ -677,7 +677,8 @@ static int parse_rbd_opts_token(char *c, void *private) /* * Get a ceph client with specific addr and configuration, if one does - * not exist create it. + * not exist create it. Either way, ceph_opts is consumed by this + * function. */ static struct rbd_client *rbd_get_client(struct ceph_options *ceph_opts) { @@ -4994,7 +4995,6 @@ static ssize_t rbd_add(struct bus_type *bus, rc = PTR_ERR(rbdc); goto err_out_args; } - ceph_opts = NULL; /* rbd_dev client now owns this */ /* pick the pool */ osdc = &rbdc->client->osdc; @@ -5038,8 +5038,6 @@ err_out_rbd_dev: err_out_client: rbd_put_client(rbdc); err_out_args: - if (ceph_opts) - ceph_destroy_options(ceph_opts); kfree(rbd_opts); rbd_spec_put(spec); err_out_module: -- cgit v0.10.2 From 3abef3b3585bbc67d56fdc9c67761a900fb4b69d Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 13 May 2013 20:35:37 -0500 Subject: rbd: fix cleanup in rbd_add() Bjorn Helgaas pointed out that a recent commit introduced a use-after-free condition in an error path for rbd_add(). He correctly stated: I think b536f69a3a5 "rbd: set up devices only for mapped images" introduced a use-after-free error in rbd_add(): ... If rbd_dev_device_setup() returns an error, we call rbd_dev_image_release(), which ultimately kfrees rbd_dev. Then we call rbd_dev_destroy(), which references fields in the already-freed rbd_dev struct before kfreeing it again. The simple fix is to return the error code after the call to rbd_dev_image_release(). Closer examination revealed that there's no need to clean up rbd_opts in that function, so fix that too. Update some other comments that have also become out of date. Reported-by: Bjorn Helgaas Signed-off-by: Alex Elder Reviewed-by: Josh Durgin diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 5f64ba7..3a897a5 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -4700,8 +4700,10 @@ out: return ret; } -/* Undo whatever state changes are made by v1 or v2 image probe */ - +/* + * Undo whatever state changes are made by v1 or v2 header info + * call. + */ static void rbd_dev_unprobe(struct rbd_device *rbd_dev) { struct rbd_image_header *header; @@ -4905,9 +4907,10 @@ static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool mapping) int tmp; /* - * Get the id from the image id object. If it's not a - * format 2 image, we'll get ENOENT back, and we'll assume - * it's a format 1 image. + * Get the id from the image id object. Unless there's an + * error, rbd_dev->spec->image_id will be filled in with + * a dynamically-allocated string, and rbd_dev->image_format + * will be set to either 1 or 2. */ ret = rbd_dev_image_id(rbd_dev); if (ret) @@ -5029,16 +5032,18 @@ static ssize_t rbd_add(struct bus_type *bus, rbd_dev->mapping.read_only = read_only; rc = rbd_dev_device_setup(rbd_dev); - if (!rc) - return count; + if (rc) { + rbd_dev_image_release(rbd_dev); + goto err_out_module; + } + + return count; - rbd_dev_image_release(rbd_dev); err_out_rbd_dev: rbd_dev_destroy(rbd_dev); err_out_client: rbd_put_client(rbdc); err_out_args: - kfree(rbd_opts); rbd_spec_put(spec); err_out_module: module_put(THIS_MODULE); -- cgit v0.10.2 From fbe06b7bae7c9cf6ab05168fce5ee93b2f4bae7c Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 17 May 2013 11:49:10 -0700 Subject: x86, range: fix missing merge during add range MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Christian found v3.9 does not work with E350 with EFI is enabled. [ 1.658832] Trying to unpack rootfs image as initramfs... [ 1.679935] BUG: unable to handle kernel paging request at ffff88006e3fd000 [ 1.686940] IP: [] memset+0x1f/0xb0 [ 1.692010] PGD 1f77067 PUD 1f7a067 PMD 61420067 PTE 0 but early memtest report all memory could be accessed without problem. early page table is set in following sequence: [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] [ 0.000000] init_memory_mapping: [mem 0x6e600000-0x6e7fffff] [ 0.000000] init_memory_mapping: [mem 0x6c000000-0x6e5fffff] [ 0.000000] init_memory_mapping: [mem 0x00100000-0x6bffffff] [ 0.000000] init_memory_mapping: [mem 0x6e800000-0x6ea07fff] but later efi_enter_virtual_mode try set mapping again wrongly. [ 0.010644] pid_max: default: 32768 minimum: 301 [ 0.015302] init_memory_mapping: [mem 0x640c5000-0x6e3fcfff] that means it fails with pfn_range_is_mapped. It turns out that we have a bug in add_range_with_merge and it does not merge range properly when new add one fill the hole between two exsiting ranges. In the case when [mem 0x00100000-0x6bffffff] is the hole between [mem 0x00000000-0x000fffff] and [mem 0x6c000000-0x6e7fffff]. Fix the add_range_with_merge by calling itself recursively. Reported-by: "Christian König" Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/CAE9FiQVofGoSk7q5-0irjkBxemqK729cND4hov-1QCBJDhxpgQ@mail.gmail.com Cc: v3.9 Signed-off-by: H. Peter Anvin diff --git a/kernel/range.c b/kernel/range.c index 071b0ab..eb911db 100644 --- a/kernel/range.c +++ b/kernel/range.c @@ -48,9 +48,11 @@ int add_range_with_merge(struct range *range, int az, int nr_range, final_start = min(range[i].start, start); final_end = max(range[i].end, end); - range[i].start = final_start; - range[i].end = final_end; - return nr_range; + /* clear it and add it back for further merge */ + range[i].start = 0; + range[i].end = 0; + return add_range_with_merge(range, az, nr_range, + final_start, final_end); } /* Need to add it: */ -- cgit v0.10.2 From 57a9c7609d7418ce75324df38f66cd7d937a77cb Mon Sep 17 00:00:00 2001 From: Clement Chauplannaz Date: Sun, 12 May 2013 21:08:52 +0200 Subject: scripts/config: fix assignment of parameters for short version of --*-after options When --*-after options are used, two parameters are parsed from the command-line before the adequate function is called: - the `before' option, after which the new option will be inserted, - the name of the option to enable/disable/modularise. With the short version of --*-after options (namely -E, -D, -M), the parsing step is not performed which leads to processing unset variables. Add options -E, -D, -M to the test that triggers assignment of parameters for --*-after options. Signed-off-by: Clement Chauplannaz Acked-by: Andi Kleen Signed-off-by: Yann E. MORIN diff --git a/scripts/config b/scripts/config index bb4d3de..a65ecbb 100755 --- a/scripts/config +++ b/scripts/config @@ -105,7 +105,7 @@ while [ "$1" != "" ] ; do ;; --refresh) ;; - --*-after) + --*-after|-E|-D|-M) checkarg "$1" A=$ARG checkarg "$2" -- cgit v0.10.2 From 3d15aacbb802af72b4ff0c3ba576536cdb3bace0 Mon Sep 17 00:00:00 2001 From: Andrew Bresticker Date: Sun, 19 May 2013 22:58:07 -0700 Subject: ASoC: max98090: request IRQF_ONESHOT interrupt request_threaded_irq() rejects calls which both do not specify a handler (indicating that the primary IRQ handler should be used) and do not set IRQF_ONESHOT because the combination is unsafe with level-triggered interrupts. It is safe in this case, though, since max98090 IRQs are edge-triggered and the interrupts aren't ACK'ed until the codec's IRQ status register is read. Because of this, an IRQF_ONESHOT interrupt doesn't really make a difference, but request one anyway in order to make request_threaded_irq() happy. Signed-off-by: Andrew Bresticker Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c index ce0d364..8d14a76 100644 --- a/sound/soc/codecs/max98090.c +++ b/sound/soc/codecs/max98090.c @@ -2233,7 +2233,7 @@ static int max98090_probe(struct snd_soc_codec *codec) dev_dbg(codec->dev, "irq = %d\n", max98090->irq); ret = request_threaded_irq(max98090->irq, NULL, - max98090_interrupt, IRQF_TRIGGER_FALLING, + max98090_interrupt, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "max98090_interrupt", codec); if (ret < 0) { dev_err(codec->dev, "request_irq failed: %d\n", -- cgit v0.10.2 From 2c071ed7c3660992951abe4b560359058ce41f68 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Mon, 20 May 2013 08:33:54 +0100 Subject: ASoC: soc-compress: Send correct stream event for capture start Signed-off-by: Charles Keepax Signed-off-by: Mark Brown diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 3853f7e..06a8000 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -220,8 +220,12 @@ static int soc_compr_set_params(struct snd_compr_stream *cstream, goto err; } - snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, - SND_SOC_DAPM_STREAM_START); + if (cstream->direction == SND_COMPRESS_PLAYBACK) + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, + SND_SOC_DAPM_STREAM_START); + else + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, + SND_SOC_DAPM_STREAM_START); /* cancel any delayed stream shutdown that is pending */ rtd->pop_wait = 0; -- cgit v0.10.2 From 3634a6327815d39dd93e5c44a602daae91c66297 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Fri, 17 May 2013 09:30:32 -0400 Subject: fuse: truncate pagecache range on hole punch fuse supports hole punch via the fallocate() FALLOC_FL_PUNCH_HOLE interface. When a hole punch is passed through, the page cache is not cleared and thus allows reading stale data from the cache. This is easily demonstrable (using FOPEN_KEEP_CACHE) by reading a smallish random data file into cache, punching a hole and creating a copy of the file. Drop caches or remount and observe that the original file no longer matches the file copied after the hole punch. The original file contains a zeroed range and the latter file contains stale data. Protect against writepage requests in progress and punch out the associated page cache range after a successful client fs hole punch. Signed-off-by: Brian Foster Signed-off-by: Miklos Szeredi diff --git a/fs/fuse/file.c b/fs/fuse/file.c index fe19132..a200a2d 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -16,6 +16,7 @@ #include #include #include +#include static const struct file_operations fuse_direct_io_file_operations; @@ -2453,6 +2454,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, loff_t length) { struct fuse_file *ff = file->private_data; + struct inode *inode = file->f_inode; struct fuse_conn *fc = ff->fc; struct fuse_req *req; struct fuse_fallocate_in inarg = { @@ -2466,9 +2468,16 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, if (fc->no_fallocate) return -EOPNOTSUPP; + if (mode & FALLOC_FL_PUNCH_HOLE) { + mutex_lock(&inode->i_mutex); + fuse_set_nowrite(inode); + } + req = fuse_get_req_nopages(fc); - if (IS_ERR(req)) - return PTR_ERR(req); + if (IS_ERR(req)) { + err = PTR_ERR(req); + goto out; + } req->in.h.opcode = FUSE_FALLOCATE; req->in.h.nodeid = ff->nodeid; @@ -2483,6 +2492,15 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, } fuse_put_request(fc, req); +out: + if (mode & FALLOC_FL_PUNCH_HOLE) { + if (!err) + truncate_pagecache_range(inode, offset, + offset + length - 1); + fuse_release_nowrite(inode); + mutex_unlock(&inode->i_mutex); + } + return err; } -- cgit v0.10.2 From bee6c307800bbb26ba1a855b1841c2f0c4b7622a Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Fri, 17 May 2013 15:27:34 -0400 Subject: fuse: update inode size and invalidate attributes on fallocate An fallocate request without FALLOC_FL_KEEP_SIZE set can extend the size of a file. Update the inode size after a successful fallocate. Also invalidate the inode attributes after a successful fallocate to ensure we pick up the latest attribute values (i.e., i_blocks). Signed-off-by: Brian Foster Signed-off-by: Miklos Szeredi diff --git a/fs/fuse/file.c b/fs/fuse/file.c index a200a2d..d9f4679 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2492,11 +2492,20 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, } fuse_put_request(fc, req); + if (err) + goto out; + + /* we could have extended the file */ + if (!(mode & FALLOC_FL_KEEP_SIZE)) + fuse_write_update_size(inode, offset + length); + + if (mode & FALLOC_FL_PUNCH_HOLE) + truncate_pagecache_range(inode, offset, offset + length - 1); + + fuse_invalidate_attr(inode); + out: if (mode & FALLOC_FL_PUNCH_HOLE) { - if (!err) - truncate_pagecache_range(inode, offset, - offset + length - 1); fuse_release_nowrite(inode); mutex_unlock(&inode->i_mutex); } -- cgit v0.10.2 From e1e5762823be84cb97f629bdfecb97af3d187406 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 20 May 2013 17:54:35 +0200 Subject: spi: topcliff-pch: Pass correct pointer to free_irq() free_irq() expects the same pointer that was passed to request_irq(), otherwise the IRQ is not freed. The issue was found using the following coccinelle script: @r1@ type T; T devid; @@ request_irq(..., devid) @r2@ type r1.T; T devid; position p; @@ free_irq@p(..., devid) @@ position p != r2.p; @@ *free_irq@p(...) Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index 35f60bd..963e0f3 100644 --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -1487,7 +1487,7 @@ static int pch_spi_pd_probe(struct platform_device *plat_dev) return 0; err_spi_register_master: - free_irq(board_dat->pdev->irq, board_dat); + free_irq(board_dat->pdev->irq, data); err_request_irq: pch_spi_free_resources(board_dat, data); err_spi_get_resources: -- cgit v0.10.2 From 62cc4d595fe96106ff793cbebbff051179d7619e Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 20 May 2013 11:28:35 -0500 Subject: ASoC: wm5110: Add missing speaker initialisation Add callback to initialise the speaker in the core following the recent changes to handling of integration with the thermal interrupts. Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index 731884e..c00480b 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -976,6 +976,8 @@ static int wm5110_codec_probe(struct snd_soc_codec *codec) if (ret != 0) return ret; + arizona_init_spk(codec); + snd_soc_dapm_disable_pin(&codec->dapm, "HAPTICS"); priv->core.arizona->dapm = &codec->dapm; -- cgit v0.10.2 From be646c2d2ba8e2e56596d72633705f8286698c25 Mon Sep 17 00:00:00 2001 From: Joern Engel Date: Wed, 15 May 2013 00:44:07 -0700 Subject: target: Remove unused wait_for_tasks bit in target_wait_for_sess_cmds Drop unused transport_wait_for_tasks() check in target_wait_for_sess_cmds shutdown code, and convert tcm_qla2xxx + ib_srpt fabric drivers. Cc: Joern Engel Cc: Roland Dreier Signed-off-by: Nicholas Bellinger diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index b08ca7a..564024e 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -2328,7 +2328,7 @@ static void srpt_release_channel_work(struct work_struct *w) se_sess = ch->sess; BUG_ON(!se_sess); - target_wait_for_sess_cmds(se_sess, 0); + target_wait_for_sess_cmds(se_sess); transport_deregister_session_configfs(se_sess); transport_deregister_session(se_sess); diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index d182c96..7a3870f 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -1370,7 +1370,7 @@ static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) dump_stack(); return; } - target_wait_for_sess_cmds(se_sess, 0); + target_wait_for_sess_cmds(se_sess); transport_deregister_session_configfs(sess->se_sess); transport_deregister_session(sess->se_sess); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 4a79336..311c113 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2263,14 +2263,10 @@ EXPORT_SYMBOL(target_sess_cmd_list_set_waiting); /* target_wait_for_sess_cmds - Wait for outstanding descriptors * @se_sess: session to wait for active I/O - * @wait_for_tasks: Make extra transport_wait_for_tasks call */ -void target_wait_for_sess_cmds( - struct se_session *se_sess, - int wait_for_tasks) +void target_wait_for_sess_cmds(struct se_session *se_sess) { struct se_cmd *se_cmd, *tmp_cmd; - bool rc = false; list_for_each_entry_safe(se_cmd, tmp_cmd, &se_sess->sess_cmd_list, se_cmd_list) { @@ -2280,24 +2276,10 @@ void target_wait_for_sess_cmds( " %d\n", se_cmd, se_cmd->t_state, se_cmd->se_tfo->get_cmd_state(se_cmd)); - if (wait_for_tasks) { - pr_debug("Calling transport_wait_for_tasks se_cmd: %p t_state: %d," - " fabric state: %d\n", se_cmd, se_cmd->t_state, - se_cmd->se_tfo->get_cmd_state(se_cmd)); - - rc = transport_wait_for_tasks(se_cmd); - - pr_debug("After transport_wait_for_tasks se_cmd: %p t_state: %d," - " fabric state: %d\n", se_cmd, se_cmd->t_state, - se_cmd->se_tfo->get_cmd_state(se_cmd)); - } - - if (!rc) { - wait_for_completion(&se_cmd->cmd_wait_comp); - pr_debug("After cmd_wait_comp: se_cmd: %p t_state: %d" - " fabric state: %d\n", se_cmd, se_cmd->t_state, - se_cmd->se_tfo->get_cmd_state(se_cmd)); - } + wait_for_completion(&se_cmd->cmd_wait_comp); + pr_debug("After cmd_wait_comp: se_cmd: %p t_state: %d" + " fabric state: %d\n", se_cmd, se_cmd->t_state, + se_cmd->se_tfo->get_cmd_state(se_cmd)); se_cmd->se_tfo->release_cmd(se_cmd); } diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h index ba3471b..8a26f0d 100644 --- a/include/target/target_core_fabric.h +++ b/include/target/target_core_fabric.h @@ -123,7 +123,7 @@ int transport_send_check_condition_and_sense(struct se_cmd *, int target_get_sess_cmd(struct se_session *, struct se_cmd *, bool); int target_put_sess_cmd(struct se_session *, struct se_cmd *); void target_sess_cmd_list_set_waiting(struct se_session *); -void target_wait_for_sess_cmds(struct se_session *, int); +void target_wait_for_sess_cmds(struct se_session *); int core_alua_check_nonop_delay(struct se_cmd *); -- cgit v0.10.2 From 7c055881de33b5d8ebb6d12150eaf338a0546199 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Sun, 12 May 2013 23:21:24 +0200 Subject: NFC: Remove commented out LLCP related Makefile line The Kconfig symbol NFC_LLCP was removed in commit 30cc458765 ("NFC: Move LLCP code to the NFC top level diirectory"). But the reference to its macro in this Makefile was only commented out. Remove it now. Signed-off-by: Paul Bolle Signed-off-by: Samuel Ortiz diff --git a/net/nfc/Makefile b/net/nfc/Makefile index fb799de..a76f453 100644 --- a/net/nfc/Makefile +++ b/net/nfc/Makefile @@ -5,7 +5,6 @@ obj-$(CONFIG_NFC) += nfc.o obj-$(CONFIG_NFC_NCI) += nci/ obj-$(CONFIG_NFC_HCI) += hci/ -#obj-$(CONFIG_NFC_LLCP) += llcp/ nfc-objs := core.o netlink.o af_nfc.o rawsock.o llcp_core.o llcp_commands.o \ llcp_sock.o -- cgit v0.10.2 From d999e4db0ac409c582cb15e6b120241ed9105064 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Tue, 30 Apr 2013 23:22:34 +0200 Subject: NFC: mei_phy depends on INTEL_MEI INTEL_MEI_BUS_NFC never made it upstream, so make it depend on INTEL_MEI. Signed-off-by: Samuel Ortiz diff --git a/drivers/nfc/Kconfig b/drivers/nfc/Kconfig index 4775d4e..74a852e 100644 --- a/drivers/nfc/Kconfig +++ b/drivers/nfc/Kconfig @@ -28,7 +28,7 @@ config NFC_WILINK config NFC_MEI_PHY tristate "MEI bus NFC device support" - depends on INTEL_MEI_BUS_NFC && NFC_HCI + depends on INTEL_MEI && NFC_HCI help This adds support to use an mei bus nfc device. Select this if you will use an HCI NFC driver for an NFC chip connected behind an -- cgit v0.10.2 From 73f3adb9b91efac04e4e7f8379a85400fc57121e Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Tue, 30 Apr 2013 23:48:50 +0200 Subject: NFC: mei_phy: Register event callback when enabling the device The callback registration starts a waiting read, so it needs to be fired everytime the device is enabled. Otherwise following writes will never get an answer back. Signed-off-by: Samuel Ortiz diff --git a/drivers/nfc/mei_phy.c b/drivers/nfc/mei_phy.c index b8f8abc..1201bdb 100644 --- a/drivers/nfc/mei_phy.c +++ b/drivers/nfc/mei_phy.c @@ -64,6 +64,15 @@ int nfc_mei_phy_enable(void *phy_id) return r; } + r = mei_cl_register_event_cb(phy->device, nfc_mei_event_cb, phy); + if (r) { + pr_err("MEY_PHY: Event cb registration failed\n"); + mei_cl_disable_device(phy->device); + phy->powered = 0; + + return r; + } + phy->powered = 1; return 0; diff --git a/drivers/nfc/microread/mei.c b/drivers/nfc/microread/mei.c index 1ad044d..51d44fb 100644 --- a/drivers/nfc/microread/mei.c +++ b/drivers/nfc/microread/mei.c @@ -43,24 +43,16 @@ static int microread_mei_probe(struct mei_cl_device *device, return -ENOMEM; } - r = mei_cl_register_event_cb(device, nfc_mei_event_cb, phy); - if (r) { - pr_err(MICROREAD_DRIVER_NAME ": event cb registration failed\n"); - goto err_out; - } - r = microread_probe(phy, &mei_phy_ops, LLC_NOP_NAME, MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD, &phy->hdev); - if (r < 0) - goto err_out; - - return 0; + if (r < 0) { + nfc_mei_phy_free(phy); -err_out: - nfc_mei_phy_free(phy); + return r; + } - return r; + return 0; } static int microread_mei_remove(struct mei_cl_device *device) diff --git a/drivers/nfc/pn544/mei.c b/drivers/nfc/pn544/mei.c index 1eb4884..50cef3a 100644 --- a/drivers/nfc/pn544/mei.c +++ b/drivers/nfc/pn544/mei.c @@ -43,24 +43,16 @@ static int pn544_mei_probe(struct mei_cl_device *device, return -ENOMEM; } - r = mei_cl_register_event_cb(device, nfc_mei_event_cb, phy); - if (r) { - pr_err(PN544_DRIVER_NAME ": event cb registration failed\n"); - goto err_out; - } - r = pn544_hci_probe(phy, &mei_phy_ops, LLC_NOP_NAME, MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD, &phy->hdev); - if (r < 0) - goto err_out; - - return 0; + if (r < 0) { + nfc_mei_phy_free(phy); -err_out: - nfc_mei_phy_free(phy); + return r; + } - return r; + return 0; } static int pn544_mei_remove(struct mei_cl_device *device) -- cgit v0.10.2 From e3a6b14ceda0207c3405c6266e5177a85c0db044 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Tue, 30 Apr 2013 23:50:29 +0200 Subject: NFC: mei: Do not disable MEI devices from their remove routine Enabling and disabling device is exclusively handled by the mei_phy_ops. Signed-off-by: Samuel Ortiz diff --git a/drivers/nfc/microread/mei.c b/drivers/nfc/microread/mei.c index 51d44fb..cdf1bc5 100644 --- a/drivers/nfc/microread/mei.c +++ b/drivers/nfc/microread/mei.c @@ -63,8 +63,6 @@ static int microread_mei_remove(struct mei_cl_device *device) microread_remove(phy->hdev); - nfc_mei_phy_disable(phy); - nfc_mei_phy_free(phy); return 0; diff --git a/drivers/nfc/pn544/mei.c b/drivers/nfc/pn544/mei.c index 50cef3a..b5d3d18 100644 --- a/drivers/nfc/pn544/mei.c +++ b/drivers/nfc/pn544/mei.c @@ -63,8 +63,6 @@ static int pn544_mei_remove(struct mei_cl_device *device) pn544_hci_remove(phy->hdev); - nfc_mei_phy_disable(phy); - nfc_mei_phy_free(phy); return 0; -- cgit v0.10.2 From bdea0d222a21f864a811cf6666532334e622f7c6 Mon Sep 17 00:00:00 2001 From: "Lad, Prabhakar" Date: Tue, 7 May 2013 01:07:25 -0300 Subject: [media] media: davinci: vpbe: fix layer availability for NV12 format For NV12 format, even if display data is single image, both VIDWIN0 and VIDWIN1 parameters must be used. The start address of Y data plane and C data plane is configured in VIDEOWIN0ADH/L and VIDEOWIN1ADH/L respectively. cuurently only one layer was requested, which is suffice for yuv422, but for yuv420(NV12) two layers are required and fix the same by requesting for other layer if pix fmt is NV12 during set_fmt. Signed-off-by: Lad, Prabhakar Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/davinci/vpbe_display.c b/drivers/media/platform/davinci/vpbe_display.c index 1802f11..d0b375c 100644 --- a/drivers/media/platform/davinci/vpbe_display.c +++ b/drivers/media/platform/davinci/vpbe_display.c @@ -916,6 +916,21 @@ static int vpbe_display_s_fmt(struct file *file, void *priv, other video window */ layer->pix_fmt = *pixfmt; + if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) { + struct vpbe_layer *otherlayer; + + otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer); + /* if other layer is available, only + * claim it, do not configure it + */ + ret = osd_device->ops.request_layer(osd_device, + otherlayer->layer_info.id); + if (ret < 0) { + v4l2_err(&vpbe_dev->v4l2_dev, + "Display Manager failed to allocate layer\n"); + return -EBUSY; + } + } /* Get osd layer config */ osd_device->ops.get_layer_config(osd_device, -- cgit v0.10.2 From 39e219d9292958460c3229df29995454414ce626 Mon Sep 17 00:00:00 2001 From: "Lad, Prabhakar" Date: Fri, 10 May 2013 00:48:38 -0300 Subject: [media] davinci: vpfe: fix error path in probe The error path on failure was calling mutex_unlock(), but there was no actuall call before for mutex_lock(). This patch fixes this issue by pointing it to proper go label. Reported-by: Jose Pablo Carballo Signed-off-by: Lad, Prabhakar Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/davinci/vpfe_capture.c b/drivers/media/platform/davinci/vpfe_capture.c index 8c50d30..3827fe1 100644 --- a/drivers/media/platform/davinci/vpfe_capture.c +++ b/drivers/media/platform/davinci/vpfe_capture.c @@ -1837,7 +1837,7 @@ static int vpfe_probe(struct platform_device *pdev) if (NULL == ccdc_cfg) { v4l2_err(pdev->dev.driver, "Memory allocation failed for ccdc_cfg\n"); - goto probe_free_lock; + goto probe_free_dev_mem; } mutex_lock(&ccdc_lock); -- cgit v0.10.2 From 96f83b3f270aff148a1fa55f9a464e1bbadeadd4 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 7 May 2013 07:51:21 -0300 Subject: [media] davinci: vpfe: fix error return code in vpfe_probe() Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Acked-by: Lad, Prabhakar Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c b/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c index b88e1dd..d8ce20d 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c @@ -639,7 +639,8 @@ static int vpfe_probe(struct platform_device *pdev) if (ret) goto probe_free_dev_mem; - if (vpfe_initialize_modules(vpfe_dev, pdev)) + ret = vpfe_initialize_modules(vpfe_dev, pdev); + if (ret) goto probe_disable_clock; vpfe_dev->media_dev.dev = vpfe_dev->pdev; @@ -663,7 +664,8 @@ static int vpfe_probe(struct platform_device *pdev) /* set the driver data in platform device */ platform_set_drvdata(pdev, vpfe_dev); /* register subdevs/entities */ - if (vpfe_register_entities(vpfe_dev)) + ret = vpfe_register_entities(vpfe_dev); + if (ret) goto probe_out_v4l2_unregister; ret = vpfe_attach_irq(vpfe_dev); -- cgit v0.10.2 From ab6717886b6af7c1408602948653c63408c46f5e Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 8 May 2013 16:23:41 -0300 Subject: [media] v4l2: SI476X MFD - Do not use binary constants Gcc < 4.3 doesn't understand binary constanrs (0b*): drivers/media/radio/radio-si476x.c:862:20: error: invalid suffix "b10000000" on integer constant Hence use a hexadecimal constant (0x*) instead. Signed-off-by: Geert Uytterhoeven Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/radio/radio-si476x.c b/drivers/media/radio/radio-si476x.c index 9430c6a..9dc8baf 100644 --- a/drivers/media/radio/radio-si476x.c +++ b/drivers/media/radio/radio-si476x.c @@ -44,7 +44,7 @@ #define FREQ_MUL (10000000 / 625) -#define SI476X_PHDIV_STATUS_LINK_LOCKED(status) (0b10000000 & (status)) +#define SI476X_PHDIV_STATUS_LINK_LOCKED(status) (0x80 & (status)) #define DRIVER_NAME "si476x-radio" #define DRIVER_CARD "SI476x AM/FM Receiver" -- cgit v0.10.2 From ea457ad9dbf32c8d22cc1cc39b4c1a2e06bf9b89 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 2 May 2013 11:16:26 -0300 Subject: [media] radio-si476x: depend on SND_SOC It is not possible to select SND_SOC_SI476X if we have not also enabled SND_SOC. warning: (RADIO_SI476X) selects SND_SOC_SI476X which has unmet direct dependencies (SOUND && !M68K && !UML && SND && SND_SOC) Signed-off-by: Arnd Bergmann [hans.verkuil@cisco.com: fixed wrong driver name in subject] Acked-by: Mauro Carvalho Chehab Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig index c0beee2..d529ba7 100644 --- a/drivers/media/radio/Kconfig +++ b/drivers/media/radio/Kconfig @@ -22,6 +22,7 @@ config RADIO_SI476X tristate "Silicon Laboratories Si476x I2C FM Radio" depends on I2C && VIDEO_V4L2 depends on MFD_SI476X_CORE + depends on SND_SOC select SND_SOC_SI476X ---help--- Choose Y here if you have this FM radio chip. -- cgit v0.10.2 From 6e7df1cd373d688486b0b0b6626cb32f59ebdcfa Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 7 May 2013 08:06:11 -0300 Subject: [media] DocBook: media: update codec section, drop obsolete 'suspended' state The Codec section in the V4L2 specification was marked as 'suspended', even though codec support has been around for quite some time. Update this section, explaining a bit about memory-to-memory devices and pointing to the MPEG controls section. Signed-off-by: Hans Verkuil Acked-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/Documentation/DocBook/media/v4l/dev-codec.xml b/Documentation/DocBook/media/v4l/dev-codec.xml index dca0ecd..ff44c16 100644 --- a/Documentation/DocBook/media/v4l/dev-codec.xml +++ b/Documentation/DocBook/media/v4l/dev-codec.xml @@ -1,18 +1,27 @@ Codec Interface - - Suspended + A V4L2 codec can compress, decompress, transform, or otherwise +convert video data from one format into another format, in memory. Typically +such devices are memory-to-memory devices (i.e. devices with the +V4L2_CAP_VIDEO_M2M or V4L2_CAP_VIDEO_M2M_MPLANE +capability set). + - This interface has been be suspended from the V4L2 API -implemented in Linux 2.6 until we have more experience with codec -device interfaces. - + A memory-to-memory video node acts just like a normal video node, but it +supports both output (sending frames from memory to the codec hardware) and +capture (receiving the processed frames from the codec hardware into memory) +stream I/O. An application will have to setup the stream +I/O for both sides and finally call &VIDIOC-STREAMON; for both capture and output +to start the codec. - A V4L2 codec can compress, decompress, transform, or otherwise -convert video data from one format into another format, in memory. -Applications send data to be converted to the driver through a -&func-write; call, and receive the converted data through a -&func-read; call. For efficiency a driver may also support streaming -I/O. + Video compression codecs use the MPEG controls to setup their codec parameters +(note that the MPEG controls actually support many more codecs than just MPEG). +See . - [to do] + Memory-to-memory devices can often be used as a shared resource: you can +open the video node multiple times, each application setting up their own codec properties +that are local to the file handle, and each can use it independently from the others. +The driver will arbitrate access to the codec and reprogram it whenever another file +handler gets access. This is different from the usual video node behavior where the video properties +are global to the device (i.e. changing something through one file handle is visible +through another file handle). -- cgit v0.10.2 From a2ac2d792cb6a22eb86ef4e026ba74c3ea6e67ee Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 10 May 2013 07:53:08 -0300 Subject: [media] vpfe-capture.c: remove unused label probe_free_lock Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/davinci/vpfe_capture.c b/drivers/media/platform/davinci/vpfe_capture.c index 3827fe1..9360909 100644 --- a/drivers/media/platform/davinci/vpfe_capture.c +++ b/drivers/media/platform/davinci/vpfe_capture.c @@ -1991,7 +1991,6 @@ probe_out_release_irq: free_irq(vpfe_dev->ccdc_irq0, vpfe_dev); probe_free_ccdc_cfg_mem: kfree(ccdc_cfg); -probe_free_lock: mutex_unlock(&ccdc_lock); probe_free_dev_mem: kfree(vpfe_dev); -- cgit v0.10.2 From 2031941502339d548cd51bf34e6ebb8bc3bb2d89 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Fri, 26 Apr 2013 04:52:57 -0300 Subject: [media] exynos4-is: Fix potential null pointer dereference in mipi-csis.c When 'node' is NULL, the print statement tries to dereference it. Hence replace the variable with the one that is accessible. Signed-off-by: Sachin Kamat Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c index a2eda9d..254d70f 100644 --- a/drivers/media/platform/exynos4-is/mipi-csis.c +++ b/drivers/media/platform/exynos4-is/mipi-csis.c @@ -746,7 +746,7 @@ static int s5pcsis_parse_dt(struct platform_device *pdev, node = v4l2_of_get_next_endpoint(node, NULL); if (!node) { dev_err(&pdev->dev, "No port node at %s\n", - node->full_name); + pdev->dev.of_node->full_name); return -EINVAL; } /* Get port node and validate MIPI-CSI channel id. */ -- cgit v0.10.2 From 8410725333088643f49371396e727cc1e41ccfb5 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Tue, 30 Apr 2013 02:16:19 -0300 Subject: [media] s3c-camif: Fix incorrect variable type 'rotation' was an 8 bit variable and hence could not have values greater than 255. Since we need higher values, change it to 16 bit type. Signed-off-by: Sachin Kamat Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s3c-camif/camif-core.h b/drivers/media/platform/s3c-camif/camif-core.h index 261134b..35d2fcd 100644 --- a/drivers/media/platform/s3c-camif/camif-core.h +++ b/drivers/media/platform/s3c-camif/camif-core.h @@ -229,7 +229,7 @@ struct camif_vp { unsigned int state; u16 fmt_flags; u8 id; - u8 rotation; + u16 rotation; u8 hflip; u8 vflip; unsigned int offset; -- cgit v0.10.2 From c6f89116c14144c18295d2a06294788c86fe9e6d Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 30 Apr 2013 00:42:16 -0300 Subject: [media] s5c73m3: Fix off-by-one valid range checking for fie->index Current code uses fie->index as array subscript, thus the valid value range is 0 ... ARRAY_SIZE(s5c73m3_intervals) - 1. Signed-off-by: Axel Lin Acked-by: Andrzej Hajda Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c index cb52438..9eac531 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c @@ -956,7 +956,7 @@ static int s5c73m3_oif_enum_frame_interval(struct v4l2_subdev *sd, if (fie->pad != OIF_SOURCE_PAD) return -EINVAL; - if (fie->index > ARRAY_SIZE(s5c73m3_intervals)) + if (fie->index >= ARRAY_SIZE(s5c73m3_intervals)) return -EINVAL; mutex_lock(&state->lock); -- cgit v0.10.2 From 7accedd2fa059961629fd47212dd7096370c64fb Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 30 Apr 2013 10:18:23 -0300 Subject: [media] exynos4-is: Fix off-by-one valid range checking for is->config_index Current code uses is->config_index as array subscript, thus the valid value range is 0 ... ARRAY_SIZE(cmd) - 1. Signed-off-by: Axel Lin Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/exynos4-is/fimc-is-regs.c b/drivers/media/platform/exynos4-is/fimc-is-regs.c index b0ff67b..d05eaa2 100644 --- a/drivers/media/platform/exynos4-is/fimc-is-regs.c +++ b/drivers/media/platform/exynos4-is/fimc-is-regs.c @@ -174,7 +174,7 @@ int fimc_is_hw_change_mode(struct fimc_is *is) HIC_CAPTURE_STILL, HIC_CAPTURE_VIDEO, }; - if (WARN_ON(is->config_index > ARRAY_SIZE(cmd))) + if (WARN_ON(is->config_index >= ARRAY_SIZE(cmd))) return -EINVAL; mcuctl_write(cmd[is->config_index], is, MCUCTL_REG_ISSR(0)); -- cgit v0.10.2 From c79b069d72f54ff0589e7615160420553aa4f04e Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Thu, 9 May 2013 08:43:34 -0300 Subject: [media] exynos4-is: Correct fimc-lite compatible property description Ensure the compatible property for FIMC-LITE IP blocks is properly documented, a cut&paste error fix. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab diff --git a/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt b/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt index 3f62adf..de9f6b7 100644 --- a/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt +++ b/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt @@ -2,7 +2,7 @@ Exynos4x12/Exynos5 SoC series camera host interface (FIMC-LITE) Required properties: -- compatible : should be "samsung,exynos4212-fimc" for Exynos4212 and +- compatible : should be "samsung,exynos4212-fimc-lite" for Exynos4212 and Exynos4412 SoCs; - reg : physical base address and size of the device memory mapped registers; -- cgit v0.10.2 From ce0d10f887cabf9f16d1cbb60ef013021befbfdf Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 21 May 2013 15:04:07 +0100 Subject: regulator: core: Correct spelling mistake in comment Signed-off-by: Charles Keepax Signed-off-by: Mark Brown diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 6e50178..5e50b20 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2702,7 +2702,7 @@ EXPORT_SYMBOL_GPL(regulator_get_voltage); /** * regulator_set_current_limit - set regulator output current limit * @regulator: regulator source - * @min_uA: Minimuum supported current in uA + * @min_uA: Minimum supported current in uA * @max_uA: Maximum supported current in uA * * Sets current sink to the desired output current. This can be set during -- cgit v0.10.2 From 796718925159523919a589ecbd6d1811c22ef55f Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Thu, 16 May 2013 15:25:01 +0200 Subject: ASoC: davinci: fix sample rotation McASP serial audio engine needs different rotation values on TX and RX channels. Commit dde109fb462 ("ASoC: McASP: Fix data rotation for playback. Enables 24bit audio playback") changed the calculation to fix the playback format, but broke the capture stream by doing it for both TXFMT and RXFMT. Signed-off-by: Daniel Mack Signed-off-by: Mark Brown Cc: stable@vger.kernel.org [3.9 only] diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 56ecfc7..81490fe 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -631,7 +631,8 @@ static int davinci_config_channel_size(struct davinci_audio_dev *dev, int word_length) { u32 fmt; - u32 rotate = (word_length / 4) & 0x7; + u32 tx_rotate = (word_length / 4) & 0x7; + u32 rx_rotate = (32 - word_length) / 4; u32 mask = (1ULL << word_length) - 1; /* @@ -655,9 +656,9 @@ static int davinci_config_channel_size(struct davinci_audio_dev *dev, mcasp_mod_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, TXSSZ(fmt), TXSSZ(0x0F)); mcasp_mod_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, - TXROT(rotate), TXROT(7)); + TXROT(tx_rotate), TXROT(7)); mcasp_mod_bits(dev->base + DAVINCI_MCASP_RXFMT_REG, - RXROT(rotate), RXROT(7)); + RXROT(rx_rotate), RXROT(7)); mcasp_set_reg(dev->base + DAVINCI_MCASP_RXMASK_REG, mask); } -- cgit v0.10.2 From e771451c0a831d96a7c14b0ca8a8ec671d98567b Mon Sep 17 00:00:00 2001 From: Vincent Pelletier Date: Sat, 18 May 2013 18:44:04 +0200 Subject: libata: make ata_exec_internal_sg honor DMADIR MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit libata honors DMADIR for regular commands, but not for internal commands used (among other) during device initialisation. This makes SATA-host-to-PATA-device bridges based on Silicon Image SiL3611 (such as "Abit Serillel 2") end up disabled when used with an ATAPI device after a few tries. Log output of the bridge being hot-plugged with an ATAPI drive: [ 9631.212901] ata1: exception Emask 0x10 SAct 0x0 SErr 0x40c0000 action 0xe frozen [ 9631.212913] ata1: irq_stat 0x00000040, connection status changed [ 9631.212923] ata1: SError: { CommWake 10B8B DevExch } [ 9631.212939] ata1: hard resetting link [ 9632.104962] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 9632.106393] ata1.00: ATAPI: PIONEER DVD-RW DVR-115, 1.06, max UDMA/33 [ 9632.106407] ata1.00: applying bridge limits [ 9632.108151] ata1.00: configured for UDMA/33 [ 9637.105303] ata1.00: qc timeout (cmd 0xa0) [ 9637.105324] ata1.00: failed to clear UNIT ATTENTION (err_mask=0x5) [ 9637.105335] ata1: hard resetting link [ 9638.044599] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 9638.047878] ata1.00: configured for UDMA/33 [ 9643.044933] ata1.00: qc timeout (cmd 0xa0) [ 9643.044953] ata1.00: failed to clear UNIT ATTENTION (err_mask=0x5) [ 9643.044963] ata1: limiting SATA link speed to 1.5 Gbps [ 9643.044971] ata1.00: limiting speed to UDMA/33:PIO3 [ 9643.044979] ata1: hard resetting link [ 9643.984225] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 9643.987471] ata1.00: configured for UDMA/33 [ 9648.984591] ata1.00: qc timeout (cmd 0xa0) [ 9648.984612] ata1.00: failed to clear UNIT ATTENTION (err_mask=0x5) [ 9648.984619] ata1.00: disabled [ 9649.000593] ata1: hard resetting link [ 9649.939902] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 9649.955864] ata1: EH complete With this patch, the drive enumerates correctly when libata is loaded with atapi_dmadir=1: [ 9891.810863] ata1: exception Emask 0x10 SAct 0x0 SErr 0x40c0000 action 0xe frozen [ 9891.810874] ata1: irq_stat 0x00000040, connection status changed [ 9891.810884] ata1: SError: { CommWake 10B8B DevExch } [ 9891.810900] ata1: hard resetting link [ 9892.762105] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 9892.763544] ata1.00: ATAPI: PIONEER DVD-RW DVR-115, 1.06, max UDMA/33, DMADIR [ 9892.763558] ata1.00: applying bridge limits [ 9892.765393] ata1.00: configured for UDMA/33 [ 9892.786063] ata1: EH complete [ 9892.792062] scsi 0:0:0:0: CD-ROM PIONEER DVD-RW DVR-115 1.06 PQ: 0 ANSI: 5 [ 9892.798455] sr2: scsi3-mmc drive: 12x/12x writer dvd-ram cd/rw xa/form2 cdda tray [ 9892.798837] sr 0:0:0:0: Attached scsi CD-ROM sr2 [ 9892.799109] sr 0:0:0:0: Attached scsi generic sg6 type 5 Based on a patch by Csaba Halász on linux-ide: http://marc.info/?l=linux-ide&m=136121147832295&w=2 tj: minor formatting changes. Signed-off-by: Vincent Pelletier Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index d35524c..f218427 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1602,6 +1602,12 @@ unsigned ata_exec_internal_sg(struct ata_device *dev, qc->tf = *tf; if (cdb) memcpy(qc->cdb, cdb, ATAPI_CDB_LEN); + + /* some SATA bridges need us to indicate data xfer direction */ + if (tf->protocol == ATAPI_PROT_DMA && (dev->flags & ATA_DFLAG_DMADIR) && + dma_dir == DMA_FROM_DEVICE) + qc->tf.feature |= ATAPI_DMADIR; + qc->flags |= ATA_QCFLAG_RESULT_TF; qc->dma_dir = dma_dir; if (dma_dir != DMA_NONE) { -- cgit v0.10.2 From df7e131f6359f20ed8f0a37db039c4f6420a18c2 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Tue, 21 May 2013 23:07:54 +0400 Subject: sata_rcar: clear STOP bit in bmdma_start() method Iff bmdma_setup() has to stop a DMA transfer before starting a new one, then the STOP bit in the ATAPI_CONTROL1 register will remain set (it's only cleared when setting the START bit to 1) and then bmdma_start() method will set both START and STOP bits simultaneously which should abort the transfer being just started. Avoid that by explicitly clearing the STOP bit in bmdma_start() method (in this case it will be ignored on write). Signed-off-by: Sergei Shtylyov Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c index 4799868..a8e091a 100644 --- a/drivers/ata/sata_rcar.c +++ b/drivers/ata/sata_rcar.c @@ -549,6 +549,7 @@ static void sata_rcar_bmdma_start(struct ata_queued_cmd *qc) /* start host DMA transaction */ dmactl = ioread32(priv->base + ATAPI_CONTROL1_REG); + dmactl &= ~ATAPI_CONTROL1_STOP; dmactl |= ATAPI_CONTROL1_START; iowrite32(dmactl, priv->base + ATAPI_CONTROL1_REG); } -- cgit v0.10.2 From abd9a0c36028771a8f397f38bf79bfcf404f957f Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Fri, 17 May 2013 16:37:59 +0200 Subject: s390/dma: do not call debug_dma after free In dma_free_coherent call debug_dma_free_coherent before deallocating the memory to avoid a possible use after free. Reviewed-by: Gerald Schaefer Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index 9411db65..886ac7d 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -71,8 +71,8 @@ static inline void dma_free_coherent(struct device *dev, size_t size, { struct dma_map_ops *dma_ops = get_dma_ops(dev); - dma_ops->free(dev, size, cpu_addr, dma_handle, NULL); debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); + dma_ops->free(dev, size, cpu_addr, dma_handle, NULL); } #endif /* _ASM_S390_DMA_MAPPING_H */ -- cgit v0.10.2 From 576ebd74928fd60ae112b33c42b89602015fadbd Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Tue, 21 May 2013 16:08:22 +0200 Subject: kernel: Fix s390 absolute memory access for /dev/mem On s390 the prefix page and absolute zero pages are not correctly returned when reading /dev/mem. The reason is that the s390 asm/io.h file includes the asm-generic/io.h file which then defines xlate_dev_mem_ptr() and therefore overwrites the s390 specific version that does the correct swap operation for prefix and absolute zero pages. The problem is a regression that was introduced with git commit cd248341 (s390/pci: base support). To fix the problem add "#ifndef xlate_dev_mem_ptr" in asm-generic/io.h and "#define xlate_dev_mem_ptr" in asm/io.h. This ensures that the s390 version is used. For completeness also add the "#ifndef" construct for xlate_dev_kmem_ptr(). Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h index 379d96e..fd9be01 100644 --- a/arch/s390/include/asm/io.h +++ b/arch/s390/include/asm/io.h @@ -36,6 +36,7 @@ static inline void * phys_to_virt(unsigned long address) } void *xlate_dev_mem_ptr(unsigned long phys); +#define xlate_dev_mem_ptr xlate_dev_mem_ptr void unxlate_dev_mem_ptr(unsigned long phys, void *addr); /* diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index ac9da00..d5afe96 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -343,8 +343,12 @@ extern void ioport_unmap(void __iomem *p); #endif /* CONFIG_GENERIC_IOMAP */ #endif /* CONFIG_HAS_IOPORT */ +#ifndef xlate_dev_kmem_ptr #define xlate_dev_kmem_ptr(p) p +#endif +#ifndef xlate_dev_mem_ptr #define xlate_dev_mem_ptr(p) __va(p) +#endif #ifdef CONFIG_VIRT_TO_BUS #ifndef virt_to_bus -- cgit v0.10.2 From bac902d505220544824829affcf9c1b17b57b8ca Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 22 May 2013 10:55:41 +0800 Subject: spi: topcliff-pch: fix error return code in pch_spi_probe() Fix to return -ENOMEM in the platform_device_alloc() error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index 963e0f3..637d728 100644 --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -1667,6 +1667,7 @@ static int pch_spi_probe(struct pci_dev *pdev, pd_dev = platform_device_alloc("pch-spi", i); if (!pd_dev) { dev_err(&pdev->dev, "platform_device_alloc failed\n"); + retval = -ENOMEM; goto err_platform_device; } pd_dev_save->pd_save[i] = pd_dev; -- cgit v0.10.2 From 08c96abd611beadf2af414a306fe0fb02ba706ff Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 18 May 2013 21:28:15 +0200 Subject: ath9k: prevent aggregation session deadlocks Waiting for all subframes of an existing aggregation session to drain before allowing mac80211 to start a new one is fragile and deadlocks caused by this behavior have been observed. Since mac80211 has proper synchronization for aggregation session start/stop handling, a better approach to session handling is to simply allow mac80211 to start a new session at any time. This requires changing the code to discard any packets outside of the BlockAck window in the A-MPDU software retry code. This patch implements the above and also simplifies the code. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 366002f..42b03dc 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -251,10 +251,9 @@ struct ath_atx_tid { int tidno; int baw_head; /* first un-acked tx buffer */ int baw_tail; /* next unused tx buffer slot */ - int sched; - int paused; - u8 state; - bool stop_cb; + bool sched; + bool paused; + bool active; }; struct ath_node { @@ -275,10 +274,6 @@ struct ath_node { #endif }; -#define AGGR_CLEANUP BIT(1) -#define AGGR_ADDBA_COMPLETE BIT(2) -#define AGGR_ADDBA_PROGRESS BIT(3) - struct ath_tx_control { struct ath_txq *txq; struct ath_node *an; @@ -352,8 +347,7 @@ void ath_tx_tasklet(struct ath_softc *sc); void ath_tx_edma_tasklet(struct ath_softc *sc); int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid, u16 *ssn); -bool ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid, - bool flush); +void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an); diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 2382d12..5092eca 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1709,7 +1709,8 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw, flush = true; case IEEE80211_AMPDU_TX_STOP_CONT: ath9k_ps_wakeup(sc); - if (ath_tx_aggr_stop(sc, sta, tid, flush)) + ath_tx_aggr_stop(sc, sta, tid); + if (!flush) ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); ath9k_ps_restore(sc); break; diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index aa4d368..7eb1f4b 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -1227,10 +1227,7 @@ static bool ath_tx_aggr_check(struct ath_softc *sc, struct ieee80211_sta *sta, return false; txtid = ATH_AN_2_TID(an, tidno); - - if (!(txtid->state & (AGGR_ADDBA_COMPLETE | AGGR_ADDBA_PROGRESS))) - return true; - return false; + return !txtid->active; } diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 14bb335..1c9b1ba 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -125,24 +125,6 @@ static void ath_tx_queue_tid(struct ath_txq *txq, struct ath_atx_tid *tid) list_add_tail(&ac->list, &txq->axq_acq); } -static void ath_tx_resume_tid(struct ath_softc *sc, struct ath_atx_tid *tid) -{ - struct ath_txq *txq = tid->ac->txq; - - WARN_ON(!tid->paused); - - ath_txq_lock(sc, txq); - tid->paused = false; - - if (skb_queue_empty(&tid->buf_q)) - goto unlock; - - ath_tx_queue_tid(txq, tid); - ath_txq_schedule(sc, txq); -unlock: - ath_txq_unlock_complete(sc, txq); -} - static struct ath_frame_info *get_frame_info(struct sk_buff *skb) { struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); @@ -164,20 +146,7 @@ static void ath_set_rates(struct ieee80211_vif *vif, struct ieee80211_sta *sta, ARRAY_SIZE(bf->rates)); } -static void ath_tx_clear_tid(struct ath_softc *sc, struct ath_atx_tid *tid) -{ - tid->state &= ~AGGR_ADDBA_COMPLETE; - tid->state &= ~AGGR_CLEANUP; - if (!tid->stop_cb) - return; - - ieee80211_start_tx_ba_cb_irqsafe(tid->an->vif, tid->an->sta->addr, - tid->tidno); - tid->stop_cb = false; -} - -static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid, - bool flush_packets) +static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) { struct ath_txq *txq = tid->ac->txq; struct sk_buff *skb; @@ -194,15 +163,16 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid, while ((skb = __skb_dequeue(&tid->buf_q))) { fi = get_frame_info(skb); bf = fi->bf; - if (!bf && !flush_packets) - bf = ath_tx_setup_buffer(sc, txq, tid, skb); if (!bf) { - ieee80211_free_txskb(sc->hw, skb); - continue; + bf = ath_tx_setup_buffer(sc, txq, tid, skb); + if (!bf) { + ieee80211_free_txskb(sc->hw, skb); + continue; + } } - if (fi->retries || flush_packets) { + if (fi->retries) { list_add_tail(&bf->list, &bf_head); ath_tx_update_baw(sc, tid, bf->bf_state.seqno); ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0); @@ -213,10 +183,7 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid, } } - if (tid->baw_head == tid->baw_tail) - ath_tx_clear_tid(sc, tid); - - if (sendbar && !flush_packets) { + if (sendbar) { ath_txq_unlock(sc, txq); ath_send_bar(tid, tid->seq_start); ath_txq_lock(sc, txq); @@ -499,19 +466,19 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, tx_info = IEEE80211_SKB_CB(skb); fi = get_frame_info(skb); - if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, seqno))) { + if (!BAW_WITHIN(tid->seq_start, tid->baw_size, seqno)) { + /* + * Outside of the current BlockAck window, + * maybe part of a previous session + */ + txfail = 1; + } else if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, seqno))) { /* transmit completion, subframe is * acked by block ack */ acked_cnt++; } else if (!isaggr && txok) { /* transmit completion */ acked_cnt++; - } else if (tid->state & AGGR_CLEANUP) { - /* - * cleanup in progress, just fail - * the un-acked sub-frames - */ - txfail = 1; } else if (flush) { txpending = 1; } else if (fi->retries < ATH_MAX_SW_RETRIES) { @@ -535,7 +502,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, if (bf_next != NULL || !bf_last->bf_stale) list_move_tail(&bf->list, &bf_head); - if (!txpending || (tid->state & AGGR_CLEANUP)) { + if (!txpending) { /* * complete the acked-ones/xretried ones; update * block-ack window @@ -609,9 +576,6 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, ath_txq_lock(sc, txq); } - if (tid->state & AGGR_CLEANUP) - ath_tx_flush_tid(sc, tid, false); - rcu_read_unlock(); if (needreset) @@ -1244,9 +1208,6 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, an = (struct ath_node *)sta->drv_priv; txtid = ATH_AN_2_TID(an, tid); - if (txtid->state & (AGGR_CLEANUP | AGGR_ADDBA_COMPLETE)) - return -EAGAIN; - /* update ampdu factor/density, they may have changed. This may happen * in HT IBSS when a beacon with HT-info is received after the station * has already been added. @@ -1258,7 +1219,7 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, an->mpdudensity = density; } - txtid->state |= AGGR_ADDBA_PROGRESS; + txtid->active = true; txtid->paused = true; *ssn = txtid->seq_start = txtid->seq_next; txtid->bar_index = -1; @@ -1269,45 +1230,17 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, return 0; } -bool ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid, - bool flush) +void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid) { struct ath_node *an = (struct ath_node *)sta->drv_priv; struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid); struct ath_txq *txq = txtid->ac->txq; - bool ret = !flush; - - if (flush) - txtid->stop_cb = false; - - if (txtid->state & AGGR_CLEANUP) - return false; - - if (!(txtid->state & AGGR_ADDBA_COMPLETE)) { - txtid->state &= ~AGGR_ADDBA_PROGRESS; - return ret; - } ath_txq_lock(sc, txq); + txtid->active = false; txtid->paused = true; - - /* - * If frames are still being transmitted for this TID, they will be - * cleaned up during tx completion. To prevent race conditions, this - * TID can only be reused after all in-progress subframes have been - * completed. - */ - if (txtid->baw_head != txtid->baw_tail) { - txtid->state |= AGGR_CLEANUP; - ret = false; - txtid->stop_cb = !flush; - } else { - txtid->state &= ~AGGR_ADDBA_COMPLETE; - } - - ath_tx_flush_tid(sc, txtid, flush); + ath_tx_flush_tid(sc, txtid); ath_txq_unlock_complete(sc, txq); - return ret; } void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc, @@ -1371,18 +1304,28 @@ void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an) } } -void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid) +void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, + u16 tidno) { - struct ath_atx_tid *txtid; + struct ath_atx_tid *tid; struct ath_node *an; + struct ath_txq *txq; an = (struct ath_node *)sta->drv_priv; + tid = ATH_AN_2_TID(an, tidno); + txq = tid->ac->txq; - txtid = ATH_AN_2_TID(an, tid); - txtid->baw_size = IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor; - txtid->state |= AGGR_ADDBA_COMPLETE; - txtid->state &= ~AGGR_ADDBA_PROGRESS; - ath_tx_resume_tid(sc, txtid); + ath_txq_lock(sc, txq); + + tid->baw_size = IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor; + tid->paused = false; + + if (!skb_queue_empty(&tid->buf_q)) { + ath_tx_queue_tid(txq, tid); + ath_txq_schedule(sc, txq); + } + + ath_txq_unlock_complete(sc, txq); } /********************/ @@ -2431,13 +2374,10 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) tid->baw_head = tid->baw_tail = 0; tid->sched = false; tid->paused = false; - tid->state &= ~AGGR_CLEANUP; + tid->active = false; __skb_queue_head_init(&tid->buf_q); acno = TID_TO_WME_AC(tidno); tid->ac = &an->ac[acno]; - tid->state &= ~AGGR_ADDBA_COMPLETE; - tid->state &= ~AGGR_ADDBA_PROGRESS; - tid->stop_cb = false; } for (acno = 0, ac = &an->ac[acno]; @@ -2474,7 +2414,7 @@ void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an) } ath_tid_drain(sc, txq, tid); - ath_tx_clear_tid(sc, tid); + tid->active = false; ath_txq_unlock(sc, txq); } -- cgit v0.10.2 From 0b6e81d1658e2aa6b3acc942088c529fee5aa62e Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Wed, 22 May 2013 19:19:25 +0200 Subject: ASoC: cs42l52: microphone bias is controlled by IFACE_CTL2 register. Signed-off-by: Nicolas Schichan Acked-by: Brian Austin Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c index 0f6f481..1a17c85 100644 --- a/sound/soc/codecs/cs42l52.c +++ b/sound/soc/codecs/cs42l52.c @@ -225,7 +225,7 @@ static const char * const mic_bias_level_text[] = { }; static const struct soc_enum mic_bias_level_enum = - SOC_ENUM_SINGLE(CS42L52_IFACE_CTL1, 0, + SOC_ENUM_SINGLE(CS42L52_IFACE_CTL2, 0, ARRAY_SIZE(mic_bias_level_text), mic_bias_level_text); static const char * const cs42l52_mic_text[] = { "Single", "Differential" }; -- cgit v0.10.2 From 99674c721fd9393030365b66cbbceaa193b0c0fd Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Wed, 22 May 2013 19:19:26 +0200 Subject: ASoC: cs42l52: fix bogus shifts in "Speaker Volume" and "PCM Mixer Volume" controls. Signed-off-by: Nicolas Schichan Acked-by: Brian Austin Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c index 1a17c85..8465c1fa 100644 --- a/sound/soc/codecs/cs42l52.c +++ b/sound/soc/codecs/cs42l52.c @@ -413,7 +413,7 @@ static const struct snd_kcontrol_new cs42l52_snd_controls[] = { SOC_ENUM("Headphone Analog Gain", hp_gain_enum), SOC_DOUBLE_R_SX_TLV("Speaker Volume", CS42L52_SPKA_VOL, - CS42L52_SPKB_VOL, 7, 0x1, 0xff, hl_tlv), + CS42L52_SPKB_VOL, 0, 0x1, 0xff, hl_tlv), SOC_DOUBLE_R_SX_TLV("Bypass Volume", CS42L52_PASSTHRUA_VOL, CS42L52_PASSTHRUB_VOL, 6, 0x18, 0x90, pga_tlv), @@ -441,7 +441,7 @@ static const struct snd_kcontrol_new cs42l52_snd_controls[] = { SOC_DOUBLE_R_SX_TLV("PCM Mixer Volume", CS42L52_PCMA_MIXER_VOL, CS42L52_PCMB_MIXER_VOL, - 6, 0x7f, 0x19, hl_tlv), + 0, 0x7f, 0x19, hl_tlv), SOC_DOUBLE_R("PCM Mixer Switch", CS42L52_PCMA_MIXER_VOL, CS42L52_PCMB_MIXER_VOL, 7, 1, 1), -- cgit v0.10.2 From 40e2516acb426f349c70e3bada821f3203b69de2 Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Wed, 22 May 2013 19:19:27 +0200 Subject: ASoC: cs42l52: fix master playback mute mask. The mask should define the bits to change in the register, not the bits to preserve. This fixes the inadvertent changes of the "Headphone Analog Gain" value during mute/unmute. Signed-off-by: Nicolas Schichan Acked-by: Brian Austin Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/cs42l52.h b/sound/soc/codecs/cs42l52.h index 60985c0..4277012 100644 --- a/sound/soc/codecs/cs42l52.h +++ b/sound/soc/codecs/cs42l52.h @@ -157,7 +157,7 @@ #define CS42L52_PB_CTL1_INV_PCMA (1 << 2) #define CS42L52_PB_CTL1_MSTB_MUTE (1 << 1) #define CS42L52_PB_CTL1_MSTA_MUTE (1 << 0) -#define CS42L52_PB_CTL1_MUTE_MASK 0xFFFD +#define CS42L52_PB_CTL1_MUTE_MASK 0x03 #define CS42L52_PB_CTL1_MUTE 3 #define CS42L52_PB_CTL1_UNMUTE 0 -- cgit v0.10.2 From beaee9cac180e37bbb30d538bcea0ebbcf4fba0e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 30 Apr 2013 10:57:05 +0300 Subject: atmel: printing bogus information There was an extra ';' character added to the end of the if statement which means that it always prints that the /proc entry wasn't created even though it was. Signed-off-by: Dan Carpenter Acked-by: David Howells Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c index 830bb1d..b827d51 100644 --- a/drivers/net/wireless/atmel.c +++ b/drivers/net/wireless/atmel.c @@ -1624,7 +1624,7 @@ struct net_device *init_atmel_card(unsigned short irq, unsigned long port, netif_carrier_off(dev); - if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv)); + if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv)) printk(KERN_WARNING "atmel: unable to create /proc entry.\n"); printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n", -- cgit v0.10.2 From cc9a3e99949af4bcaf9027fc57f824b595a5fcac Mon Sep 17 00:00:00 2001 From: Jiada Wang Date: Mon, 20 May 2013 21:51:51 +0900 Subject: ARM i.MX6q: fix for ldb_di_sels As pll5_video_div has been introduced to represent the clock generated from post-divider for video. Instead of pll5_video, pll5_video_div should be proper root clock for ldb_di_sel. Signed-off-by: Jiada Wang Signed-off-by: Shawn Guo diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index dda9a2b..ba2de54 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -188,7 +188,7 @@ static const char *gpu2d_core_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd0_352m" static const char *gpu3d_core_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll2_pfd2_396m", }; static const char *gpu3d_shader_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll3_pfd0_720m", }; static const char *ipu_sels[] = { "mmdc_ch0_axi", "pll2_pfd2_396m", "pll3_120m", "pll3_pfd1_540m", }; -static const char *ldb_di_sels[] = { "pll5_video", "pll2_pfd0_352m", "pll2_pfd2_396m", "mmdc_ch1_axi", "pll3_usb_otg", }; +static const char *ldb_di_sels[] = { "pll5_video_div", "pll2_pfd0_352m", "pll2_pfd2_396m", "mmdc_ch1_axi", "pll3_usb_otg", }; static const char *ipu_di_pre_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0_352m", "pll2_pfd2_396m", "pll3_pfd1_540m", }; static const char *ipu1_di0_sels[] = { "ipu1_di0_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", }; static const char *ipu1_di1_sels[] = { "ipu1_di1_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", }; -- cgit v0.10.2 From ad06156876c0e55a01e13e1f2dd5c7f9262b1dfa Mon Sep 17 00:00:00 2001 From: Matthijs Kooijman Date: Wed, 8 May 2013 12:59:04 +0200 Subject: kbuild: Don't assume dts files live in arch/*/boot/dts In commit b40b25ff (kbuild: always run gcc -E on *.dts, remove cmd_dtc_cpp), dts building was changed to always use the C preprocessor. This meant that the .dts file passed to dtc is not the original, but the preprocessed one. When compiling with a separate build directory (i.e., with O=), this preprocessed file will not live in the same directory as the original. When the .dts file includes .dtsi files, dtc will look for them in the build directory, not in the source directory and compilation will fail. The commit referenced above tried to fix this by passing arch/*/boot/dts as an include path to dtc. However, for mips, the .dts files are not in this directory, so dts compilation on mips breaks for some targets. Instead of hardcoding this particular include path, this commit just uses the directory of the .dts file that is being compiled, which effectively restores the previous behaviour wrt includes. For most .dts files, this path is just the same as the previous hardcoded arch/*/boot/dts path. This was tested on a mips (rt3052) and an arm (bcm2835) target. Signed-off-by: Matthijs Kooijman Reviewed-by: Stephen Warren Signed-off-by: Michal Marek diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 51bb3de..8337663 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -264,7 +264,7 @@ $(obj)/%.dtb.S: $(obj)/%.dtb quiet_cmd_dtc = DTC $@ cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 \ - -i $(srctree)/arch/$(SRCARCH)/boot/dts $(DTC_FLAGS) \ + -i $(dir $<) $(DTC_FLAGS) \ -d $(depfile).dtc $(dtc-tmp) ; \ cat $(depfile).pre $(depfile).dtc > $(depfile) -- cgit v0.10.2 From be8a6d452bda4b1b842e81a99bb86f77a1cb8279 Mon Sep 17 00:00:00 2001 From: David Daney Date: Wed, 22 May 2013 21:27:22 +0000 Subject: MIPS: Remove duplicate definition of check_for_high_segbits. In C, one definition is sufficient. Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5304/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index ce9818e..afeef93 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -301,10 +301,6 @@ static u32 tlb_handler[128] __cpuinitdata; static struct uasm_label labels[128] __cpuinitdata; static struct uasm_reloc relocs[128] __cpuinitdata; -#ifdef CONFIG_64BIT -static int check_for_high_segbits __cpuinitdata; -#endif - static int check_for_high_segbits __cpuinitdata; static unsigned int kscratch_used_mask __cpuinitdata; -- cgit v0.10.2 From 8f657933a3c2086d4731350c98f91a990783c0d3 Mon Sep 17 00:00:00 2001 From: David Daney Date: Wed, 22 May 2013 22:35:56 +0000 Subject: MIPS: Quit exposing Kconfig symbols in uapi headers. The kernel's struct pt_regs has many fields conditional on various Kconfig variables, we cannot be exporting this garbage to user-space. Move the kernel's definition to asm/ptrace.h, and put a uapi only version in uapi/asm/ptrace.h gated by #ifndef __KERNEL__ Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5305/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h index a3186f2..5e6cd09 100644 --- a/arch/mips/include/asm/ptrace.h +++ b/arch/mips/include/asm/ptrace.h @@ -16,6 +16,38 @@ #include #include +/* + * This struct defines the way the registers are stored on the stack during a + * system call/exception. As usual the registers k0/k1 aren't being saved. + */ +struct pt_regs { +#ifdef CONFIG_32BIT + /* Pad bytes for argument save space on the stack. */ + unsigned long pad0[6]; +#endif + + /* Saved main processor registers. */ + unsigned long regs[32]; + + /* Saved special registers. */ + unsigned long cp0_status; + unsigned long hi; + unsigned long lo; +#ifdef CONFIG_CPU_HAS_SMARTMIPS + unsigned long acx; +#endif + unsigned long cp0_badvaddr; + unsigned long cp0_cause; + unsigned long cp0_epc; +#ifdef CONFIG_MIPS_MT_SMTC + unsigned long cp0_tcstatus; +#endif /* CONFIG_MIPS_MT_SMTC */ +#ifdef CONFIG_CPU_CAVIUM_OCTEON + unsigned long long mpl[3]; /* MTM{0,1,2} */ + unsigned long long mtp[3]; /* MTP{0,1,2} */ +#endif +} __aligned(8); + struct task_struct; extern int ptrace_getregs(struct task_struct *child, __s64 __user *data); diff --git a/arch/mips/include/uapi/asm/ptrace.h b/arch/mips/include/uapi/asm/ptrace.h index 4d58d84..b26f7e3 100644 --- a/arch/mips/include/uapi/asm/ptrace.h +++ b/arch/mips/include/uapi/asm/ptrace.h @@ -22,16 +22,12 @@ #define DSP_CONTROL 77 #define ACX 78 +#ifndef __KERNEL__ /* * This struct defines the way the registers are stored on the stack during a * system call/exception. As usual the registers k0/k1 aren't being saved. */ struct pt_regs { -#ifdef CONFIG_32BIT - /* Pad bytes for argument save space on the stack. */ - unsigned long pad0[6]; -#endif - /* Saved main processor registers. */ unsigned long regs[32]; @@ -39,20 +35,11 @@ struct pt_regs { unsigned long cp0_status; unsigned long hi; unsigned long lo; -#ifdef CONFIG_CPU_HAS_SMARTMIPS - unsigned long acx; -#endif unsigned long cp0_badvaddr; unsigned long cp0_cause; unsigned long cp0_epc; -#ifdef CONFIG_MIPS_MT_SMTC - unsigned long cp0_tcstatus; -#endif /* CONFIG_MIPS_MT_SMTC */ -#ifdef CONFIG_CPU_CAVIUM_OCTEON - unsigned long long mpl[3]; /* MTM{0,1,2} */ - unsigned long long mtp[3]; /* MTP{0,1,2} */ -#endif } __attribute__ ((aligned (8))); +#endif /* __KERNEL__ */ /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ #define PTRACE_GETREGS 12 -- cgit v0.10.2 From 591a0ac7f14aae6bf11b1cb6b5a68480bd644ddb Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 23 May 2013 12:07:50 +0300 Subject: OMAPDSS: Fix crash with DT boot When booting with DT, there's a crash when omapfb is probed. This is caused by the fact that omapdss+DT is not yet supported, and thus omapdss is not probed at all. On the other hand, omapfb is always probed. When omapfb tries to use omapdss, there's a NULL pointer dereference crash. The same error should most likely happen with omapdrm and omap_vout also. To fix this, add an "initialized" state to omapdss. When omapdss has been probed, it's marked as initialized. omapfb, omapdrm and omap_vout check this state when they are probed to see that omapdss is actually there. Signed-off-by: Tomi Valkeinen Tested-by: Peter Ujfalusi diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index 079c54c..902074b 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -548,6 +548,9 @@ static void pdev_shutdown(struct platform_device *device) static int pdev_probe(struct platform_device *device) { + if (omapdss_is_initialized() == false) + return -EPROBE_DEFER; + DBG("%s", device->name); return drm_platform_init(&omap_drm_driver, device); } diff --git a/drivers/media/platform/omap/omap_vout.c b/drivers/media/platform/omap/omap_vout.c index 96c4a17..0a489bd 100644 --- a/drivers/media/platform/omap/omap_vout.c +++ b/drivers/media/platform/omap/omap_vout.c @@ -2144,6 +2144,9 @@ static int __init omap_vout_probe(struct platform_device *pdev) struct omap_dss_device *def_display; struct omap2video_device *vid_dev = NULL; + if (omapdss_is_initialized() == false) + return -EPROBE_DEFER; + ret = omapdss_compat_init(); if (ret) { dev_err(&pdev->dev, "failed to init dss\n"); diff --git a/drivers/video/omap2/dss/core.c b/drivers/video/omap2/dss/core.c index f8779d4..f49ddb9 100644 --- a/drivers/video/omap2/dss/core.c +++ b/drivers/video/omap2/dss/core.c @@ -53,6 +53,8 @@ static char *def_disp_name; module_param_named(def_disp, def_disp_name, charp, 0); MODULE_PARM_DESC(def_disp, "default display name"); +static bool dss_initialized; + const char *omapdss_get_default_display_name(void) { return core.default_display_name; @@ -66,6 +68,12 @@ enum omapdss_version omapdss_get_version(void) } EXPORT_SYMBOL(omapdss_get_version); +bool omapdss_is_initialized(void) +{ + return dss_initialized; +} +EXPORT_SYMBOL(omapdss_is_initialized); + struct platform_device *dss_get_core_pdev(void) { return core.pdev; @@ -606,6 +614,8 @@ static int __init omap_dss_init(void) return r; } + dss_initialized = true; + return 0; } @@ -636,7 +646,15 @@ static int __init omap_dss_init(void) static int __init omap_dss_init2(void) { - return omap_dss_register_drivers(); + int r; + + r = omap_dss_register_drivers(); + if (r) + return r; + + dss_initialized = true; + + return 0; } core_initcall(omap_dss_init); diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c index 717f13a..bb5f9fe 100644 --- a/drivers/video/omap2/omapfb/omapfb-main.c +++ b/drivers/video/omap2/omapfb/omapfb-main.c @@ -2416,6 +2416,9 @@ static int __init omapfb_probe(struct platform_device *pdev) DBG("omapfb_probe\n"); + if (omapdss_is_initialized() == false) + return -EPROBE_DEFER; + if (pdev->num_resources != 0) { dev_err(&pdev->dev, "probed for an unknown device\n"); r = -ENODEV; diff --git a/include/video/omapdss.h b/include/video/omapdss.h index caefa09..9b52340 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -741,6 +741,7 @@ struct omap_dss_driver { }; enum omapdss_version omapdss_get_version(void); +bool omapdss_is_initialized(void); int omap_dss_register_driver(struct omap_dss_driver *); void omap_dss_unregister_driver(struct omap_dss_driver *); -- cgit v0.10.2 From 2a7851bffb008ff4882eee673da74718997b4265 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Fri, 17 May 2013 03:56:10 +0000 Subject: netfilter: add nf_ipv6_ops hook to fix xt_addrtype with IPv6 Quoting https://bugzilla.netfilter.org/show_bug.cgi?id=812: [ ip6tables -m addrtype ] When I tried to use in the nat/PREROUTING it messes up the routing cache even if the rule didn't matched at all. [..] If I remove the --limit-iface-in from the non-working scenario, so just use the -m addrtype --dst-type LOCAL it works! This happens when LOCAL type matching is requested with --limit-iface-in, and the default ipv6 route is via the interface the packet we test arrived on. Because xt_addrtype uses ip6_route_output, the ipv6 routing implementation creates an unwanted cached entry, and the packet won't make it to the real/expected destination. Silently ignoring --limit-iface-in makes the routing work but it breaks rule matching (--dst-type LOCAL with limit-iface-in is supposed to only match if the dst address is configured on the incoming interface; without --limit-iface-in it will match if the address is reachable via lo). The test should call ipv6_chk_addr() instead. However, this would add a link-time dependency on ipv6. There are two possible solutions: 1) Revert the commit that moved ipt_addrtype to xt_addrtype, and put ipv6 specific code into ip6t_addrtype. 2) add new "nf_ipv6_ops" struct to register pointers to ipv6 functions. While the former might seem preferable, Pablo pointed out that there are more xt modules with link-time dependeny issues regarding ipv6, so lets go for 2). Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso diff --git a/include/linux/netfilter_ipv6.h b/include/linux/netfilter_ipv6.h index 98ffb54..2d4df6ce 100644 --- a/include/linux/netfilter_ipv6.h +++ b/include/linux/netfilter_ipv6.h @@ -17,6 +17,22 @@ extern __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook, extern int ipv6_netfilter_init(void); extern void ipv6_netfilter_fini(void); + +/* + * Hook functions for ipv6 to allow xt_* modules to be built-in even + * if IPv6 is a module. + */ +struct nf_ipv6_ops { + int (*chk_addr)(struct net *net, const struct in6_addr *addr, + const struct net_device *dev, int strict); +}; + +extern const struct nf_ipv6_ops __rcu *nf_ipv6_ops; +static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void) +{ + return rcu_dereference(nf_ipv6_ops); +} + #else /* CONFIG_NETFILTER */ static inline int ipv6_netfilter_init(void) { return 0; } static inline void ipv6_netfilter_fini(void) { return; } diff --git a/include/net/addrconf.h b/include/net/addrconf.h index 84a6440..21f70270 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -65,7 +65,7 @@ extern int addrconf_set_dstaddr(struct net *net, extern int ipv6_chk_addr(struct net *net, const struct in6_addr *addr, - struct net_device *dev, + const struct net_device *dev, int strict); #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index d1ab6ab..d1b2d80 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1487,7 +1487,7 @@ static int ipv6_count_addresses(struct inet6_dev *idev) } int ipv6_chk_addr(struct net *net, const struct in6_addr *addr, - struct net_device *dev, int strict) + const struct net_device *dev, int strict) { struct inet6_ifaddr *ifp; unsigned int hash = inet6_addr_hash(addr); diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c index 72836f4..95f3f1d 100644 --- a/net/ipv6/netfilter.c +++ b/net/ipv6/netfilter.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -186,6 +187,10 @@ static __sum16 nf_ip6_checksum_partial(struct sk_buff *skb, unsigned int hook, return csum; }; +static const struct nf_ipv6_ops ipv6ops = { + .chk_addr = ipv6_chk_addr, +}; + static const struct nf_afinfo nf_ip6_afinfo = { .family = AF_INET6, .checksum = nf_ip6_checksum, @@ -198,6 +203,7 @@ static const struct nf_afinfo nf_ip6_afinfo = { int __init ipv6_netfilter_init(void) { + RCU_INIT_POINTER(nf_ipv6_ops, &ipv6ops); return nf_register_afinfo(&nf_ip6_afinfo); } @@ -206,5 +212,6 @@ int __init ipv6_netfilter_init(void) */ void ipv6_netfilter_fini(void) { + RCU_INIT_POINTER(nf_ipv6_ops, NULL); nf_unregister_afinfo(&nf_ip6_afinfo); } diff --git a/net/netfilter/core.c b/net/netfilter/core.c index 07c865a..857ca9f 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -30,6 +30,8 @@ static DEFINE_MUTEX(afinfo_mutex); const struct nf_afinfo __rcu *nf_afinfo[NFPROTO_NUMPROTO] __read_mostly; EXPORT_SYMBOL(nf_afinfo); +const struct nf_ipv6_ops __rcu *nf_ipv6_ops __read_mostly; +EXPORT_SYMBOL_GPL(nf_ipv6_ops); int nf_register_afinfo(const struct nf_afinfo *afinfo) { diff --git a/net/netfilter/xt_addrtype.c b/net/netfilter/xt_addrtype.c index 49c5ff7..68ff29f 100644 --- a/net/netfilter/xt_addrtype.c +++ b/net/netfilter/xt_addrtype.c @@ -22,6 +22,7 @@ #include #endif +#include #include #include @@ -33,12 +34,12 @@ MODULE_ALIAS("ip6t_addrtype"); #if IS_ENABLED(CONFIG_IP6_NF_IPTABLES) static u32 match_lookup_rt6(struct net *net, const struct net_device *dev, - const struct in6_addr *addr) + const struct in6_addr *addr, u16 mask) { const struct nf_afinfo *afinfo; struct flowi6 flow; struct rt6_info *rt; - u32 ret; + u32 ret = 0; int route_err; memset(&flow, 0, sizeof(flow)); @@ -49,12 +50,19 @@ static u32 match_lookup_rt6(struct net *net, const struct net_device *dev, rcu_read_lock(); afinfo = nf_get_afinfo(NFPROTO_IPV6); - if (afinfo != NULL) + if (afinfo != NULL) { + const struct nf_ipv6_ops *v6ops; + + if (dev && (mask & XT_ADDRTYPE_LOCAL)) { + v6ops = nf_get_ipv6_ops(); + if (v6ops && v6ops->chk_addr(net, addr, dev, true)) + ret = XT_ADDRTYPE_LOCAL; + } route_err = afinfo->route(net, (struct dst_entry **)&rt, - flowi6_to_flowi(&flow), !!dev); - else + flowi6_to_flowi(&flow), false); + } else { route_err = 1; - + } rcu_read_unlock(); if (route_err) @@ -62,15 +70,12 @@ static u32 match_lookup_rt6(struct net *net, const struct net_device *dev, if (rt->rt6i_flags & RTF_REJECT) ret = XT_ADDRTYPE_UNREACHABLE; - else - ret = 0; - if (rt->rt6i_flags & RTF_LOCAL) + if (dev == NULL && rt->rt6i_flags & RTF_LOCAL) ret |= XT_ADDRTYPE_LOCAL; if (rt->rt6i_flags & RTF_ANYCAST) ret |= XT_ADDRTYPE_ANYCAST; - dst_release(&rt->dst); return ret; } @@ -90,7 +95,7 @@ static bool match_type6(struct net *net, const struct net_device *dev, if ((XT_ADDRTYPE_LOCAL | XT_ADDRTYPE_ANYCAST | XT_ADDRTYPE_UNREACHABLE) & mask) - return !!(mask & match_lookup_rt6(net, dev, addr)); + return !!(mask & match_lookup_rt6(net, dev, addr, mask)); return true; } -- cgit v0.10.2 From 4f36ea6eed2081340c7a7aa98c73187ecfccebff Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 23 May 2013 01:50:46 +0000 Subject: netfilter: ipt_ULOG: fix non-null terminated string in the nf_log path If nf_log uses ipt_ULOG as logging output, we can deliver non-null terminated strings to user-space since the maximum length of the prefix that is passed by nf_log is NF_LOG_PREFIXLEN but pm->prefix is 32 bytes long (ULOG_PREFIX_LEN). This is actually happening already from nf_conntrack_tcp if ipt_ULOG is used, since it is passing strings longer than 32 bytes. Signed-off-by: Chen Gang Signed-off-by: Pablo Neira Ayuso diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c index cf08218..ff4b781 100644 --- a/net/ipv4/netfilter/ipt_ULOG.c +++ b/net/ipv4/netfilter/ipt_ULOG.c @@ -231,8 +231,10 @@ static void ipt_ulog_packet(struct net *net, put_unaligned(tv.tv_usec, &pm->timestamp_usec); put_unaligned(skb->mark, &pm->mark); pm->hook = hooknum; - if (prefix != NULL) - strncpy(pm->prefix, prefix, sizeof(pm->prefix)); + if (prefix != NULL) { + strncpy(pm->prefix, prefix, sizeof(pm->prefix) - 1); + pm->prefix[sizeof(pm->prefix) - 1] = '\0'; + } else if (loginfo->prefix[0] != '\0') strncpy(pm->prefix, loginfo->prefix, sizeof(pm->prefix)); else -- cgit v0.10.2 From d47333ddb234dbc661ab2a4fe019758bd33ba33b Mon Sep 17 00:00:00 2001 From: Torsten Schenk Date: Thu, 23 May 2013 13:38:29 +0200 Subject: ALSA: usb-6fire: Modify firmware version check Check only the uppermost 16 bits instead of the whole 32 bits of the version information. Do this because all firmware version tested with this version information worked correctly and the strict check causes problems for several users. Signed-off-by: Torsten Schenk Signed-off-by: Takashi Iwai diff --git a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c index a1d9b07..b9defcd 100644 --- a/sound/usb/6fire/firmware.c +++ b/sound/usb/6fire/firmware.c @@ -42,8 +42,8 @@ static const u8 ep_w_max_packet_size[] = { 0x94, 0x01, 0x5c, 0x02 /* alt 3: 404 EP2 and 604 EP6 (25 fpp) */ }; -static const u8 known_fw_versions[][4] = { - { 0x03, 0x01, 0x0b, 0x00 } +static const u8 known_fw_versions[][2] = { + { 0x03, 0x01 } }; struct ihex_record { @@ -343,7 +343,7 @@ static int usb6fire_fw_check(u8 *version) int i; for (i = 0; i < ARRAY_SIZE(known_fw_versions); i++) - if (!memcmp(version, known_fw_versions + i, 4)) + if (!memcmp(version, known_fw_versions + i, 2)) return 0; snd_printk(KERN_ERR PREFIX "invalid fimware version in device: %*ph. " -- cgit v0.10.2 From a9a6e7a09598013ff97e34ebd84c39d1f51f261a Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Thu, 23 May 2013 14:31:23 +0000 Subject: MIPS: Trap exception handling fixes 2a0b24f56c2492b932f1aed617ae80fb23500d21 broke Trap exception handling in the standard MIPS mode. Additionally the microMIPS-mode trap code mask is wrong, as it's a 4-bit field. Here's a fix. Signed-off-by: Maciej W. Rozycki Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5309/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index e3be670..a75ae40 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -897,22 +897,24 @@ out_sigsegv: asmlinkage void do_tr(struct pt_regs *regs) { - unsigned int opcode, tcode = 0; + u32 opcode, tcode = 0; u16 instr[2]; - unsigned long epc = exception_epc(regs); + unsigned long epc = msk_isa16_mode(exception_epc(regs)); - if ((__get_user(instr[0], (u16 __user *)msk_isa16_mode(epc))) || - (__get_user(instr[1], (u16 __user *)msk_isa16_mode(epc + 2)))) + if (get_isa16_mode(regs->cp0_epc)) { + if (__get_user(instr[0], (u16 __user *)(epc + 0)) || + __get_user(instr[1], (u16 __user *)(epc + 2))) goto out_sigsegv; - opcode = (instr[0] << 16) | instr[1]; - - /* Immediate versions don't provide a code. */ - if (!(opcode & OPCODE)) { - if (get_isa16_mode(regs->cp0_epc)) - /* microMIPS */ - tcode = (opcode >> 12) & 0x1f; - else - tcode = ((opcode >> 6) & ((1 << 10) - 1)); + opcode = (instr[0] << 16) | instr[1]; + /* Immediate versions don't provide a code. */ + if (!(opcode & OPCODE)) + tcode = (opcode >> 12) & ((1 << 4) - 1); + } else { + if (__get_user(opcode, (u32 __user *)epc)) + goto out_sigsegv; + /* Immediate versions don't provide a code. */ + if (!(opcode & OPCODE)) + tcode = (opcode >> 6) & ((1 << 10) - 1); } do_trap_or_bp(regs, tcode, "Trap"); -- cgit v0.10.2 From f20c783c3ae33c30fd7cf0616db18d30cb6e802b Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Thu, 23 May 2013 17:23:49 +0200 Subject: regmap: regcache: Fixup locking for custom lock callbacks The parameter passed to the regmap lock/unlock callbacks needs to be map->lock_arg, regcache passes just map. This works fine in the case that no custom locking callbacks are used since in this case map->lock_arg equals map, but will break when custom locking callbacks are used. The issue was introduced in commit 0d4529c5("regmap: make lock/unlock functions customizable") and is fixed by this patch. Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index aa0875f..b4e343b 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -143,7 +143,7 @@ static int rbtree_show(struct seq_file *s, void *ignored) int registers = 0; int this_registers, average; - map->lock(map); + map->lock(map->lock_arg); mem_size = sizeof(*rbtree_ctx); mem_size += BITS_TO_LONGS(map->cache_present_nbits) * sizeof(long); @@ -170,7 +170,7 @@ static int rbtree_show(struct seq_file *s, void *ignored) seq_printf(s, "%d nodes, %d registers, average %d registers, used %zu bytes\n", nodes, registers, average, mem_size); - map->unlock(map); + map->unlock(map->lock_arg); return 0; } diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 75923f2..507ee2d 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -270,7 +270,7 @@ int regcache_sync(struct regmap *map) BUG_ON(!map->cache_ops || !map->cache_ops->sync); - map->lock(map); + map->lock(map->lock_arg); /* Remember the initial bypass state */ bypass = map->cache_bypass; dev_dbg(map->dev, "Syncing %s cache\n", @@ -306,7 +306,7 @@ out: trace_regcache_sync(map->dev, name, "stop"); /* Restore the bypass state */ map->cache_bypass = bypass; - map->unlock(map); + map->unlock(map->lock_arg); return ret; } @@ -333,7 +333,7 @@ int regcache_sync_region(struct regmap *map, unsigned int min, BUG_ON(!map->cache_ops || !map->cache_ops->sync); - map->lock(map); + map->lock(map->lock_arg); /* Remember the initial bypass state */ bypass = map->cache_bypass; @@ -352,7 +352,7 @@ out: trace_regcache_sync(map->dev, name, "stop region"); /* Restore the bypass state */ map->cache_bypass = bypass; - map->unlock(map); + map->unlock(map->lock_arg); return ret; } @@ -372,11 +372,11 @@ EXPORT_SYMBOL_GPL(regcache_sync_region); */ void regcache_cache_only(struct regmap *map, bool enable) { - map->lock(map); + map->lock(map->lock_arg); WARN_ON(map->cache_bypass && enable); map->cache_only = enable; trace_regmap_cache_only(map->dev, enable); - map->unlock(map); + map->unlock(map->lock_arg); } EXPORT_SYMBOL_GPL(regcache_cache_only); @@ -391,9 +391,9 @@ EXPORT_SYMBOL_GPL(regcache_cache_only); */ void regcache_mark_dirty(struct regmap *map) { - map->lock(map); + map->lock(map->lock_arg); map->cache_dirty = true; - map->unlock(map); + map->unlock(map->lock_arg); } EXPORT_SYMBOL_GPL(regcache_mark_dirty); @@ -410,11 +410,11 @@ EXPORT_SYMBOL_GPL(regcache_mark_dirty); */ void regcache_cache_bypass(struct regmap *map, bool enable) { - map->lock(map); + map->lock(map->lock_arg); WARN_ON(map->cache_only && enable); map->cache_bypass = enable; trace_regmap_cache_bypass(map->dev, enable); - map->unlock(map); + map->unlock(map->lock_arg); } EXPORT_SYMBOL_GPL(regcache_cache_bypass); -- cgit v0.10.2 From c815797663b72e3ac1736f1886538152bc48e4af Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 23 May 2013 18:10:21 +0200 Subject: cfg80211: check wdev->netdev in connection work If a P2P-Device is present and another virtual interface triggers the connection work, the system crash because it tries to check if the P2P-Device's netdev (which doesn't exist) is up. Skip any wdevs that have no netdev to fix this. Cc: stable@vger.kernel.org Reported-by: YanBo Signed-off-by: Johannes Berg diff --git a/net/wireless/sme.c b/net/wireless/sme.c index 8b5eddf..3ed35c3 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -231,6 +231,9 @@ void cfg80211_conn_work(struct work_struct *work) mutex_lock(&rdev->sched_scan_mtx); list_for_each_entry(wdev, &rdev->wdev_list, list) { + if (!wdev->netdev) + continue; + wdev_lock(wdev); if (!netif_running(wdev->netdev)) { wdev_unlock(wdev); -- cgit v0.10.2 From cf90bc4830b858487fe4b9b9ecd0031e23ca3e83 Mon Sep 17 00:00:00 2001 From: Chayan Biswas Date: Wed, 22 May 2013 22:34:49 +0000 Subject: Return the result from user admin command IOCTL even in case of failure We copy the result to user if the command is completed from the controller even if it completes with failure (non-zero) status. A return status of < 0 indicates the command was not completed by the controller. The user application may expect the error code in the result field in case of failure. Signed-off-by: Chayan Biswas Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 42abf72..8493708 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1439,7 +1439,7 @@ static int nvme_user_admin_cmd(struct nvme_dev *dev, nvme_free_iod(dev, iod); } - if (!status && copy_to_user(&ucmd->result, &cmd.result, + if ((status >= 0) && copy_to_user(&ucmd->result, &cmd.result, sizeof(cmd.result))) status = -EFAULT; -- cgit v0.10.2 From 2b436312f0919c05804fed5aa4b7f255db196e7a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 23 May 2013 21:04:38 +0200 Subject: mac80211: fix queue handling crash The code I added in "mac80211: don't start new netdev queues if driver stopped" crashes for monitor and AP VLAN interfaces because while they have a netdev, they don't have queues set up by the driver. To fix the crash, exclude these from queue accounting here and just start their netdev queues unconditionally. For monitor, this is the best we can do, as we can redirect frames there to any other interface and don't know which one that will since it can be different for each frame. For AP VLAN interfaces, we can do better later and actually properly track the queue status. Not doing this is really a separate bug though. Reported-by: Ilan Peer Reported-by: Jouni Malinen Signed-off-by: Johannes Berg diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 60f1ce5..68f51c3 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -653,7 +653,11 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) ieee80211_recalc_ps(local, -1); - if (dev) { + if (sdata->vif.type == NL80211_IFTYPE_MONITOR || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { + /* XXX: for AP_VLAN, actually track AP queues */ + netif_tx_start_all_queues(dev); + } else if (dev) { unsigned long flags; int n_acs = IEEE80211_NUM_ACS; int ac; -- cgit v0.10.2 From 4325d724cd91643c727ca4cb063e8bb19989950b Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 23 May 2013 15:05:59 +0200 Subject: cfg80211: fix reporting 64-bit station info tx bytes Copy & paste mistake - STATION_INFO_TX_BYTES64 is the name of the flag, not NL80211_STA_INFO_TX_BYTES64. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index dfdb5e6..d5aed3b 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3411,7 +3411,7 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, (u32)sinfo->rx_bytes)) goto nla_put_failure; if ((sinfo->filled & (STATION_INFO_TX_BYTES | - NL80211_STA_INFO_TX_BYTES64)) && + STATION_INFO_TX_BYTES64)) && nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, (u32)sinfo->tx_bytes)) goto nla_put_failure; -- cgit v0.10.2 From 7805d000db30a3787a4c969bab6ae4d8a5fd8ce6 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 24 May 2013 10:50:24 +0900 Subject: cgroup: fix a subtle bug in descendant pre-order walk When cgroup_next_descendant_pre() initiates a walk, it checks whether the subtree root doesn't have any children and if not returns NULL. Later code assumes that the subtree isn't empty. This is broken because the subtree may become empty inbetween, which can lead to the traversal escaping the subtree by walking to the sibling of the subtree root. There's no reason to have the early exit path. Remove it along with the later assumption that the subtree isn't empty. This simplifies the code a bit and fixes the subtle bug. While at it, fix the comment of cgroup_for_each_descendant_pre() which was incorrectly referring to ->css_offline() instead of ->css_online(). Signed-off-by: Tejun Heo Reviewed-by: Michal Hocko Cc: stable@vger.kernel.org diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 5047355..8bda129 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -707,7 +707,7 @@ struct cgroup *cgroup_rightmost_descendant(struct cgroup *pos); * * If a subsystem synchronizes against the parent in its ->css_online() and * before starting iterating, and synchronizes against @pos on each - * iteration, any descendant cgroup which finished ->css_offline() is + * iteration, any descendant cgroup which finished ->css_online() is * guaranteed to be visible in the future iterations. * * In other words, the following guarantees that a descendant can't escape diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 38b1365..31e9ef3 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -2954,11 +2954,8 @@ struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, WARN_ON_ONCE(!rcu_read_lock_held()); /* if first iteration, pretend we just visited @cgroup */ - if (!pos) { - if (list_empty(&cgroup->children)) - return NULL; + if (!pos) pos = cgroup; - } /* visit the first child if exists */ next = list_first_or_null_rcu(&pos->children, struct cgroup, sibling); @@ -2966,14 +2963,14 @@ struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, return next; /* no child, visit my or the closest ancestor's next sibling */ - do { + while (pos != cgroup) { next = list_entry_rcu(pos->sibling.next, struct cgroup, sibling); if (&next->sibling != &pos->parent->children) return next; pos = pos->parent; - } while (pos != cgroup); + } return NULL; } -- cgit v0.10.2 From 37523dc5ec2fead0eb5235fd9334f0419013a1f2 Mon Sep 17 00:00:00 2001 From: Jonas Andersson Date: Thu, 23 May 2013 13:38:05 +0200 Subject: ARM: dts: imx: fix clocks for cspi The CSPI controller has only one clock, but the driver spi-imx.c needs clock "per" to calculate bitrate divisor. Signed-off-by: Jonas Andersson Acked-by: Sascha Hauer Signed-off-by: Shawn Guo diff --git a/arch/arm/boot/dts/imx25.dtsi b/arch/arm/boot/dts/imx25.dtsi index d2550e0..7011539 100644 --- a/arch/arm/boot/dts/imx25.dtsi +++ b/arch/arm/boot/dts/imx25.dtsi @@ -141,8 +141,8 @@ #size-cells = <0>; compatible = "fsl,imx25-cspi", "fsl,imx35-cspi"; reg = <0x43fa4000 0x4000>; - clocks = <&clks 62>; - clock-names = "ipg"; + clocks = <&clks 62>, <&clks 62>; + clock-names = "ipg", "per"; interrupts = <14>; status = "disabled"; }; @@ -182,8 +182,8 @@ compatible = "fsl,imx25-cspi", "fsl,imx35-cspi"; reg = <0x50004000 0x4000>; interrupts = <0>; - clocks = <&clks 80>; - clock-names = "ipg"; + clocks = <&clks 80>, <&clks 80>; + clock-names = "ipg", "per"; status = "disabled"; }; @@ -210,8 +210,8 @@ #size-cells = <0>; compatible = "fsl,imx25-cspi", "fsl,imx35-cspi"; reg = <0x50010000 0x4000>; - clocks = <&clks 79>; - clock-names = "ipg"; + clocks = <&clks 79>, <&clks 79>; + clock-names = "ipg", "per"; interrupts = <13>; status = "disabled"; }; diff --git a/arch/arm/boot/dts/imx27.dtsi b/arch/arm/boot/dts/imx27.dtsi index ff4bd48..75bd113 100644 --- a/arch/arm/boot/dts/imx27.dtsi +++ b/arch/arm/boot/dts/imx27.dtsi @@ -131,7 +131,7 @@ compatible = "fsl,imx27-cspi"; reg = <0x1000e000 0x1000>; interrupts = <16>; - clocks = <&clks 53>, <&clks 0>; + clocks = <&clks 53>, <&clks 53>; clock-names = "ipg", "per"; status = "disabled"; }; @@ -142,7 +142,7 @@ compatible = "fsl,imx27-cspi"; reg = <0x1000f000 0x1000>; interrupts = <15>; - clocks = <&clks 52>, <&clks 0>; + clocks = <&clks 52>, <&clks 52>; clock-names = "ipg", "per"; status = "disabled"; }; @@ -223,7 +223,7 @@ compatible = "fsl,imx27-cspi"; reg = <0x10017000 0x1000>; interrupts = <6>; - clocks = <&clks 51>, <&clks 0>; + clocks = <&clks 51>, <&clks 51>; clock-names = "ipg", "per"; status = "disabled"; }; diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi index 21bb786..53fdde6 100644 --- a/arch/arm/boot/dts/imx51.dtsi +++ b/arch/arm/boot/dts/imx51.dtsi @@ -631,7 +631,7 @@ compatible = "fsl,imx51-cspi", "fsl,imx35-cspi"; reg = <0x83fc0000 0x4000>; interrupts = <38>; - clocks = <&clks 55>, <&clks 0>; + clocks = <&clks 55>, <&clks 55>; clock-names = "ipg", "per"; status = "disabled"; }; diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi index 845982e..eb83aa0 100644 --- a/arch/arm/boot/dts/imx53.dtsi +++ b/arch/arm/boot/dts/imx53.dtsi @@ -714,7 +714,7 @@ compatible = "fsl,imx53-cspi", "fsl,imx35-cspi"; reg = <0x63fc0000 0x4000>; interrupts = <38>; - clocks = <&clks 55>, <&clks 0>; + clocks = <&clks 55>, <&clks 55>; clock-names = "ipg", "per"; status = "disabled"; }; -- cgit v0.10.2 From 331de00a64e5027365145bdf51da27b9ce15dfd5 Mon Sep 17 00:00:00 2001 From: Sergio Aguirre Date: Thu, 4 Apr 2013 10:32:13 -0700 Subject: xhci-mem: init list heads at the beginning of init It is possible that we fail on xhci_mem_init, just before doing the INIT_LIST_HEAD, and calling xhci_mem_cleanup. Problem is that, the list_for_each_entry_safe macro, assumes list heads are initialized (not NULL), and dereferences their 'next' pointer, causing a kernel panic if this is not yet initialized. Let's protect from that by moving inits to the beginning. This patch should be backported to kernels as old as 3.2, that contain the commit 9574323c39d1f8359a04843075d89c9f32d8b7e6 "xHCI: test USB2 software LPM". Signed-off-by: Sergio Aguirre Acked-by: David Cohen Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 2cfc465..bda2c51 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2256,6 +2256,9 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) u32 page_size, temp; int i; + INIT_LIST_HEAD(&xhci->lpm_failed_devs); + INIT_LIST_HEAD(&xhci->cancel_cmd_list); + page_size = xhci_readl(xhci, &xhci->op_regs->page_size); xhci_dbg(xhci, "Supported page size register = 0x%x\n", page_size); for (i = 0; i < 16; i++) { @@ -2334,7 +2337,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) xhci->cmd_ring = xhci_ring_alloc(xhci, 1, 1, TYPE_COMMAND, flags); if (!xhci->cmd_ring) goto fail; - INIT_LIST_HEAD(&xhci->cancel_cmd_list); xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring); xhci_dbg(xhci, "First segment DMA is 0x%llx\n", (unsigned long long)xhci->cmd_ring->first_seg->dma); @@ -2445,8 +2447,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) if (xhci_setup_port_arrays(xhci, flags)) goto fail; - INIT_LIST_HEAD(&xhci->lpm_failed_devs); - /* Enable USB 3.0 device notifications for function remote wake, which * is necessary for allowing USB 3.0 devices to do remote wakeup from * U3 (device suspend). -- cgit v0.10.2 From 88696ae432ce7321540ac53d9caab3de9118b094 Mon Sep 17 00:00:00 2001 From: Vladimir Murzin Date: Tue, 9 Apr 2013 22:33:31 +0400 Subject: xhci: fix list access before init If for whatever reason we fall into fail path in xhci_mem_init() before bw table gets initialized we may access the uninitialized lists in xhci_mem_cleanup(). Check for bw table before traversing lists in cleanup routine. This patch should be backported to kernels as old as 3.2, that contain the commit 839c817ce67178ca3c7c7ad534c571bba1e69ebe "xhci: Store information about roothubs and TTs." Reported-by: Sergey Dyasly Tested-by: Sergey Dyasly Signed-off-by: Vladimir Murzin Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index bda2c51..fbf75e5 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1827,6 +1827,9 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) } spin_unlock_irqrestore(&xhci->lock, flags); + if (!xhci->rh_bw) + goto no_bw; + num_ports = HCS_MAX_PORTS(xhci->hcs_params1); for (i = 0; i < num_ports; i++) { struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table; @@ -1845,6 +1848,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) } } +no_bw: xhci->num_usb2_ports = 0; xhci->num_usb3_ports = 0; xhci->num_active_eps = 0; -- cgit v0.10.2 From 726dcaa158b316f02f7dec2cf6dbf61c30a8bf22 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 20 May 2013 08:12:57 +0100 Subject: arm64: kernel: compiling issue, need 'EXPORT_SYMBOL(clear_page)' Need 'EXPORT_SYMBOL(clear_page)' if building with allmodconfig. The related errors: ERROR: "clear_page" [fs/ocfs2/dlm/ocfs2_dlm.ko] undefined! ERROR: "clear_page" [fs/ntfs/ntfs.ko] undefined! ERROR: "clear_page" [fs/gfs2/gfs2.ko] undefined! ERROR: "clear_page" [fs/fuse/fuse.ko] undefined! ERROR: "clear_page" [fs/ext3/ext3.ko] undefined! ERROR: "clear_page" [fs/ext2/ext2.ko] undefined! ERROR: "clear_page" [fs/exofs/libore.ko] undefined! ERROR: "clear_page" [fs/exofs/exofs.ko] undefined! ERROR: "clear_page" [drivers/block/brd.ko] undefined! Signed-off-by: Chen Gang Signed-off-by: Catalin Marinas diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c index 7df1aad..41b4f62 100644 --- a/arch/arm64/kernel/arm64ksyms.c +++ b/arch/arm64/kernel/arm64ksyms.c @@ -34,6 +34,7 @@ EXPORT_SYMBOL(__strnlen_user); EXPORT_SYMBOL(__strncpy_from_user); EXPORT_SYMBOL(copy_page); +EXPORT_SYMBOL(clear_page); EXPORT_SYMBOL(__copy_from_user); EXPORT_SYMBOL(__copy_to_user); -- cgit v0.10.2 From 953dbbed9ee310100bc841cdea8f992d192531c6 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Tue, 21 May 2013 12:16:56 +0100 Subject: arm64: Do not report user faults for handled signals Currently user faults (page, undefined instruction) are always reported even though the user may have a signal handler for them. This patch adds unhandled_signal() check together with printk_ratelimit() for these cases. Signed-off-by: Catalin Marinas diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 61d7dd2..f1ff9ba 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -267,7 +267,8 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs) return; #endif - if (show_unhandled_signals) { + if (show_unhandled_signals && unhandled_signal(current, SIGILL) && + printk_ratelimit()) { pr_info("%s[%d]: undefined instruction: pc=%p\n", current->comm, task_pid_nr(current), pc); dump_instr(KERN_INFO, regs); @@ -294,7 +295,7 @@ asmlinkage long do_ni_syscall(struct pt_regs *regs) } #endif - if (show_unhandled_signals) { + if (show_unhandled_signals && printk_ratelimit()) { pr_info("%s[%d]: syscall %d\n", current->comm, task_pid_nr(current), (int)regs->syscallno); dump_instr("", regs); diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 98af6e7..1426468 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -113,7 +113,8 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr, { struct siginfo si; - if (show_unhandled_signals) { + if (show_unhandled_signals && unhandled_signal(tsk, sig) && + printk_ratelimit()) { pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n", tsk->comm, task_pid_nr(tsk), fault_name(esr), sig, addr, esr); -- cgit v0.10.2 From 23dd9b2a43698df12f7951e0e5a5fbffd0b3108a Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 23 May 2013 12:20:54 +0200 Subject: ath9k_hw: fix spur mitigation issues on AR934x Do not subtract spur power from noise floor on this chip, as it can lead to packet loss and other connectivity issues. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c index 2bf6548..e1714d7 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c @@ -334,7 +334,8 @@ static void ar9003_hw_spur_ofdm(struct ath_hw *ah, REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 1); - if (REG_READ_FIELD(ah, AR_PHY_MODE, + if (!AR_SREV_9340(ah) && + REG_READ_FIELD(ah, AR_PHY_MODE, AR_PHY_MODE_DYNAMIC) == 0x1) REG_RMW_FIELD(ah, AR_PHY_SPUR_REG, AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 1); -- cgit v0.10.2 From a37a99102e4573145aa60a2f78a690cc8def027c Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 23 May 2013 12:20:55 +0200 Subject: ath9k_hw: fix host interface reset on AR934x If a local bus timeout has been detected, the host interface needs to be reset to clear the errors. AR934x uses a different synchronous interrupt bit to indicate this, so the check needs to be fixed. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 7f25da8..01e97ce 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1306,9 +1306,13 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type) AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET; } else { tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE); - if (tmpReg & - (AR_INTR_SYNC_LOCAL_TIMEOUT | - AR_INTR_SYNC_RADM_CPL_TIMEOUT)) { + if (AR_SREV_9340(ah)) + tmpReg &= AR9340_INTR_SYNC_LOCAL_TIMEOUT; + else + tmpReg &= AR_INTR_SYNC_LOCAL_TIMEOUT | + AR_INTR_SYNC_RADM_CPL_TIMEOUT; + + if (tmpReg) { u32 val; REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0); diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h index 5c4ab50..9c056a8 100644 --- a/drivers/net/wireless/ath/ath9k/reg.h +++ b/drivers/net/wireless/ath/ath9k/reg.h @@ -1007,6 +1007,8 @@ enum { AR_INTR_SYNC_LOCAL_TIMEOUT | AR_INTR_SYNC_MAC_SLEEP_ACCESS), + AR9340_INTR_SYNC_LOCAL_TIMEOUT = 0x00000010, + AR_INTR_SYNC_SPURIOUS = 0xFFFFFFFF, }; -- cgit v0.10.2 From 86c157b3f83597e11d8f03a9dece98d1e77a8ce7 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 23 May 2013 12:20:56 +0200 Subject: ath9k_hw: improve performance for AR934x v1.3+ AR934x v1.3 no longer needs the DCU backoff reduction workaround for preventing rx overruns, but in turn needs the number of usable Tx buffers to be reduced slightly. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 01e97ce..15dfefc 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1172,6 +1172,7 @@ u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan) static inline void ath9k_hw_set_dma(struct ath_hw *ah) { struct ath_common *common = ath9k_hw_common(ah); + int txbuf_size; ENABLE_REGWRITE_BUFFER(ah); @@ -1225,13 +1226,17 @@ static inline void ath9k_hw_set_dma(struct ath_hw *ah) * So set the usable tx buf size also to half to * avoid data/delimiter underruns */ - REG_WRITE(ah, AR_PCU_TXBUF_CTRL, - AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE); - } else if (!AR_SREV_9271(ah)) { - REG_WRITE(ah, AR_PCU_TXBUF_CTRL, - AR_PCU_TXBUF_CTRL_USABLE_SIZE); + txbuf_size = AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE; + } else if (AR_SREV_9340_13_OR_LATER(ah)) { + /* Uses fewer entries for AR934x v1.3+ to prevent rx overruns */ + txbuf_size = AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE; + } else { + txbuf_size = AR_PCU_TXBUF_CTRL_USABLE_SIZE; } + if (!AR_SREV_9271(ah)) + REG_WRITE(ah, AR_PCU_TXBUF_CTRL, txbuf_size); + REGWRITE_BUFFER_FLUSH(ah); if (AR_SREV_9300_20_OR_LATER(ah)) diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c index 498fee0..566109a 100644 --- a/drivers/net/wireless/ath/ath9k/mac.c +++ b/drivers/net/wireless/ath/ath9k/mac.c @@ -410,7 +410,7 @@ bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q) REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ); - if (AR_SREV_9340(ah)) + if (AR_SREV_9340(ah) && !AR_SREV_9340_13_OR_LATER(ah)) REG_WRITE(ah, AR_DMISC(q), AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x1); else diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h index 9c056a8..f7c90cc 100644 --- a/drivers/net/wireless/ath/ath9k/reg.h +++ b/drivers/net/wireless/ath/ath9k/reg.h @@ -798,6 +798,10 @@ #define AR_SREV_REVISION_9485_10 0 #define AR_SREV_REVISION_9485_11 1 #define AR_SREV_VERSION_9340 0x300 +#define AR_SREV_REVISION_9340_10 0 +#define AR_SREV_REVISION_9340_11 1 +#define AR_SREV_REVISION_9340_12 2 +#define AR_SREV_REVISION_9340_13 3 #define AR_SREV_VERSION_9580 0x1C0 #define AR_SREV_REVISION_9580_10 4 /* AR9580 1.0 */ #define AR_SREV_VERSION_9462 0x280 @@ -897,6 +901,10 @@ #define AR_SREV_9340(_ah) \ (((_ah)->hw_version.macVersion == AR_SREV_VERSION_9340)) +#define AR_SREV_9340_13_OR_LATER(_ah) \ + (AR_SREV_9340((_ah)) && \ + ((_ah)->hw_version.macRev >= AR_SREV_REVISION_9340_13)) + #define AR_SREV_9285E_20(_ah) \ (AR_SREV_9285_12_OR_LATER(_ah) && \ ((REG_READ(_ah, AR_AN_SYNTH9) & 0x7) == 0x1)) @@ -1883,6 +1891,7 @@ enum { #define AR_PCU_TXBUF_CTRL_SIZE_MASK 0x7FF #define AR_PCU_TXBUF_CTRL_USABLE_SIZE 0x700 #define AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE 0x380 +#define AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE 0x500 #define AR_PCU_MISC_MODE2 0x8344 #define AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE 0x00000002 -- cgit v0.10.2 From e9b376671910d105c5e61103111b96209c729529 Mon Sep 17 00:00:00 2001 From: Vahram Martirosyan Date: Fri, 24 May 2013 13:57:12 +0500 Subject: jfs: Several bugs in jfs_freeze() and jfs_unfreeze() The mentioned functions do not pay attention to the error codes returned by the functions updateSuper(), lmLogInit() and lmLogShutdown(). It brings to system crash later when writing to log. The patch adds corresponding code to check and return the error codes and to print correct error messages in case of errors. Found by Linux File System Verification project (linuxtesting.org). Signed-off-by: Vahram Martirosyan Reviewed-by: Gu Zheng Signed-off-by: Dave Kleikamp diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 2003e83..788e0a9 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -611,11 +611,28 @@ static int jfs_freeze(struct super_block *sb) { struct jfs_sb_info *sbi = JFS_SBI(sb); struct jfs_log *log = sbi->log; + int rc = 0; if (!(sb->s_flags & MS_RDONLY)) { txQuiesce(sb); - lmLogShutdown(log); - updateSuper(sb, FM_CLEAN); + rc = lmLogShutdown(log); + if (rc) { + jfs_error(sb, "jfs_freeze: lmLogShutdown failed"); + + /* let operations fail rather than hang */ + txResume(sb); + + return rc; + } + rc = updateSuper(sb, FM_CLEAN); + if (rc) { + jfs_err("jfs_freeze: updateSuper failed\n"); + /* + * Don't fail here. Everything succeeded except + * marking the superblock clean, so there's really + * no harm in leaving it frozen for now. + */ + } } return 0; } @@ -627,13 +644,18 @@ static int jfs_unfreeze(struct super_block *sb) int rc = 0; if (!(sb->s_flags & MS_RDONLY)) { - updateSuper(sb, FM_MOUNT); - if ((rc = lmLogInit(log))) - jfs_err("jfs_unlock failed with return code %d", rc); - else - txResume(sb); + rc = updateSuper(sb, FM_MOUNT); + if (rc) { + jfs_error(sb, "jfs_unfreeze: updateSuper failed"); + goto out; + } + rc = lmLogInit(log); + if (rc) + jfs_error(sb, "jfs_unfreeze: lmLogInit failed"); +out: + txResume(sb); } - return 0; + return rc; } static struct dentry *jfs_do_mount(struct file_system_type *fs_type, -- cgit v0.10.2 From 95bbb82f60c80808e5a49d8233c2de8451901531 Mon Sep 17 00:00:00 2001 From: Gu Zheng Date: Thu, 23 May 2013 16:14:19 +0800 Subject: fs/jfs: Add check if journaling to disk has been disabled in lbmRead() Signed-off-by: Gu Zheng Signed-off-by: Dave Kleikamp diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index c57499d..360d27c 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -2009,7 +2009,13 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp) bio->bi_end_io = lbmIODone; bio->bi_private = bp; - submit_bio(READ_SYNC, bio); + /*check if journaling to disk has been disabled*/ + if (log->no_integrity) { + bio->bi_size = 0; + lbmIODone(bio, 0); + } else { + submit_bio(READ_SYNC, bio); + } wait_event(bp->l_ioevent, (bp->l_flag != lbmREAD)); -- cgit v0.10.2 From 77df9e0b799b03e1d5d9c68062709af5f637e834 Mon Sep 17 00:00:00 2001 From: Tony Camuso Date: Thu, 21 Feb 2013 16:11:27 -0500 Subject: xhci - correct comp_mode_recovery_timer on return from hibernate Commit 71c731a2 (usb: host: xhci: Fix Compliance Mode on SN65LVPE502CP Hardware) was a workaround for systems using the SN65LVPE502CP, controller, but it introduced a bug in resume from hibernate. The fix created a timer, comp_mode_recovery_timer, which is deleted from a timer list when xhci_suspend() is called. However, the hibernate image, including the timer list containing the comp_mode_recovery_timer, had already been saved before the timer was deleted. Upon resume from hibernate, the list containing the comp_mode_recovery_timer is restored from the image saved to disk, and xhci_resume(), assuming that the timer had been deleted by xhci_suspend(), makes a call to compliance_mode_recoery_timer_init(), which creates a new instance of the comp_mode_recovery_timer and attempts to place it into the same list in which it is already active, thus corrupting the list during the list_add() call. At this point, a call trace is emitted indicating the list corruption. Soon afterward, the system locks up, the watchdog times out, and the ensuing NMI crashes the system. The problem did not occur when resuming from suspend. In suspend, the image in RAM remains exactly as it was when xhci_suspend() deleted the comp_mode_recovery_timer, so there is no problem when xhci_resume() creates a new instance of this timer and places it in the still empty list. This patch avoids the problem by deleting the timer in xhci_resume() when resuming from hibernate. Now xhci_resume() can safely make the call to create a new instance of this timer, whether returning from suspend or hibernate. Thanks to Alan Stern for his help with understanding the problem. [Sarah reworked this patch to cover the case where the xHCI restore register operation fails, and (temp & STS_SRE) is true (and we re-init the host, including re-init for the compliance mode), but hibernate is false. The original patch would have caused list corruption in this case.] This patch should be backported to kernels as old as 3.2, that contain the commit 71c731a296f1b08a3724bd1b514b64f1bda87a23 "usb: host: xhci: Fix Compliance Mode on SN65LVPE502CP Hardware" Signed-off-by: Tony Camuso Tested-by: Tony Camuso Acked-by: Don Zickus Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index b4aa79d..ae59119 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -956,6 +956,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) struct usb_hcd *hcd = xhci_to_hcd(xhci); struct usb_hcd *secondary_hcd; int retval = 0; + bool comp_timer_running = false; /* Wait a bit if either of the roothubs need to settle from the * transition into bus suspend. @@ -993,6 +994,13 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) /* If restore operation fails, re-initialize the HC during resume */ if ((temp & STS_SRE) || hibernated) { + + if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && + !(xhci_all_ports_seen_u0(xhci))) { + del_timer_sync(&xhci->comp_mode_recovery_timer); + xhci_dbg(xhci, "Compliance Mode Recovery Timer deleted!\n"); + } + /* Let the USB core know _both_ roothubs lost power. */ usb_root_hub_lost_power(xhci->main_hcd->self.root_hub); usb_root_hub_lost_power(xhci->shared_hcd->self.root_hub); @@ -1035,6 +1043,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) retval = xhci_init(hcd->primary_hcd); if (retval) return retval; + comp_timer_running = true; + xhci_dbg(xhci, "Start the primary HCD\n"); retval = xhci_run(hcd->primary_hcd); if (!retval) { @@ -1076,7 +1086,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) * to suffer the Compliance Mode issue again. It doesn't matter if * ports have entered previously to U0 before system's suspension. */ - if (xhci->quirks & XHCI_COMP_MODE_QUIRK) + if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && !comp_timer_running) compliance_mode_recovery_timer_init(xhci); /* Re-enable port polling. */ -- cgit v0.10.2 From c3897aa5386faba77e5bbdf94902a1658d3a5b11 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 18 Apr 2013 10:02:03 -0700 Subject: xhci: Disable D3cold for buggy TI redrivers. Some xHCI hosts contain a "redriver" from TI that silently drops port status connect changes if the port slips into Compliance Mode. If the port slips into compliance mode while the host is in D0, there will not be a port status change event. If the port slips into compliance mode while the host is in D3, the host will not send a PME. This includes when the system is suspended (S3) or hibernated (S4). If this happens when the system is in S3/S4, there is nothing software can do. Other port status change events that would normally cause the host to wake the system from S3/S4 may also be lost. This includes remote wakeup, disconnects and connects on other ports, and overrcurrent events. A decision was made to _NOT_ disable system suspend/hibernate on these systems, since users are unlikely to enable wakeup from S3/S4 for the xHCI host. Software can deal with this issue when the system is in S0. A work around was put in to poll the port status registers for Compliance Mode. The xHCI driver will continue to poll the registers while the host is runtime suspended. Unfortunately, that means we can't allow the PCI device to go into D3cold, because power will be removed from the host, and the config space will read as all Fs. Disable D3cold in the xHCI PCI runtime suspend function. This patch should be backported to kernels as old as 3.2, that contain the commit 71c731a296f1b08a3724bd1b514b64f1bda87a23 "usb: host: xhci: Fix Compliance Mode on SN65LVPE502CP Hardware" Signed-off-by: Sarah Sharp Cc: Huang Ying Cc: stable@vger.kernel.org diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 1a30c38..cc24e39 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -221,6 +221,14 @@ static void xhci_pci_remove(struct pci_dev *dev) static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + + /* + * Systems with the TI redriver that loses port status change events + * need to have the registers polled during D3, so avoid D3cold. + */ + if (xhci_compliance_mode_recovery_timer_quirk_check()) + pdev->no_d3cold = true; return xhci_suspend(xhci); } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index ae59119..d8f640b 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -466,7 +466,7 @@ static void compliance_mode_recovery_timer_init(struct xhci_hcd *xhci) * Systems: * Vendor: Hewlett-Packard -> System Models: Z420, Z620 and Z820 */ -static bool compliance_mode_recovery_timer_quirk_check(void) +bool xhci_compliance_mode_recovery_timer_quirk_check(void) { const char *dmi_product_name, *dmi_sys_vendor; @@ -517,7 +517,7 @@ int xhci_init(struct usb_hcd *hcd) xhci_dbg(xhci, "Finished xhci_init\n"); /* Initializing Compliance Mode Recovery Data If Needed */ - if (compliance_mode_recovery_timer_quirk_check()) { + if (xhci_compliance_mode_recovery_timer_quirk_check()) { xhci->quirks |= XHCI_COMP_MODE_QUIRK; compliance_mode_recovery_timer_init(xhci); } diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 29c978e..77600ce 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1853,4 +1853,7 @@ struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_index); +/* xHCI quirks */ +bool xhci_compliance_mode_recovery_timer_quirk_check(void); + #endif /* __LINUX_XHCI_HCD_H */ -- cgit v0.10.2 From c15cddd900e867c5adfb3c79596479dc5975f743 Mon Sep 17 00:00:00 2001 From: Paul Taysom Date: Thu, 23 May 2013 14:31:43 -0700 Subject: ecryptfs: fixed msync to flush data When msync is called on a memory mapped file, that data is not flushed to the disk. In Linux, msync calls fsync for the file. For ecryptfs, fsync just calls the lower level file system's fsync. Changed the ecryptfs fsync code to call filemap_write_and_wait before calling the lower level fsync. Addresses the problem described in http://crbug.com/239536 Signed-off-by: Paul Taysom Signed-off-by: Tyler Hicks Cc: stable@vger.kernel.org # v3.6+ diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index 201f0a0..16f509d 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -295,6 +295,7 @@ static int ecryptfs_release(struct inode *inode, struct file *file) static int ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync) { + filemap_write_and_wait(file->f_mapping); return vfs_fsync(ecryptfs_file_to_lower(file), datasync); } -- cgit v0.10.2 From 39d4ecdb711ba44e0aa0b2f3db74ed5ac97abe21 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Fri, 24 May 2013 11:38:24 +0100 Subject: ASoC: wm5110: Correct DSP4R Mixer control name Signed-off-by: Charles Keepax Signed-off-by: Mark Brown Cc: stable@vger.kernel.org diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index c00480b..ba38f06 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -190,7 +190,7 @@ ARIZONA_MIXER_CONTROLS("DSP2R", ARIZONA_DSP2RMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP3L", ARIZONA_DSP3LMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP3R", ARIZONA_DSP3RMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP4L", ARIZONA_DSP4LMIX_INPUT_1_SOURCE), -ARIZONA_MIXER_CONTROLS("DSP5R", ARIZONA_DSP4RMIX_INPUT_1_SOURCE), +ARIZONA_MIXER_CONTROLS("DSP4R", ARIZONA_DSP4RMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("Mic", ARIZONA_MICMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("Noise", ARIZONA_NOISEMIX_INPUT_1_SOURCE), -- cgit v0.10.2 From 4d2593cc65fa15f2a36313aa8d03a0937226ad49 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 22 May 2013 23:09:50 +0000 Subject: qlge: add missing free_netdev() on error in qlge_probe() Add the missing free_netdev() before return from function qlge_probe() in the error handling case. Signed-off-by: Wei Yongjun Acked-by: Jitendra Kalsaria Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c index 50235d2..f87cc21 100644 --- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c +++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c @@ -4717,6 +4717,7 @@ static int qlge_probe(struct pci_dev *pdev, dev_err(&pdev->dev, "net device registration failed.\n"); ql_release_all(pdev); pci_disable_device(pdev); + free_netdev(ndev); return err; } /* Start up the timer to trigger EEH if -- cgit v0.10.2 From 0d8c3e77e7fba8c84c871b43f35029daa92acc17 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 22 May 2013 23:59:28 +0000 Subject: ptp_pch: fix error handling in pch_probe() Fix to release resources when ptp_clock_register() fail instead of return error code directly. Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller diff --git a/drivers/ptp/ptp_pch.c b/drivers/ptp/ptp_pch.c index bea9451..71a2559 100644 --- a/drivers/ptp/ptp_pch.c +++ b/drivers/ptp/ptp_pch.c @@ -628,9 +628,10 @@ pch_probe(struct pci_dev *pdev, const struct pci_device_id *id) chip->caps = ptp_pch_caps; chip->ptp_clock = ptp_clock_register(&chip->caps, &pdev->dev); - - if (IS_ERR(chip->ptp_clock)) - return PTR_ERR(chip->ptp_clock); + if (IS_ERR(chip->ptp_clock)) { + ret = PTR_ERR(chip->ptp_clock); + goto err_ptp_clock_reg; + } spin_lock_init(&chip->register_lock); @@ -669,6 +670,7 @@ pch_probe(struct pci_dev *pdev, const struct pci_device_id *id) err_req_irq: ptp_clock_unregister(chip->ptp_clock); +err_ptp_clock_reg: iounmap(chip->regs); chip->regs = NULL; -- cgit v0.10.2 From a622260254ee481747cceaaa8609985b29a31565 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 24 May 2013 05:49:58 +0000 Subject: ip_tunnel: fix kernel panic with icmp_dest_unreach Daniel Petre reported crashes in icmp_dst_unreach() with following call graph: #3 [ffff88003fc03938] __stack_chk_fail at ffffffff81037f77 #4 [ffff88003fc03948] icmp_send at ffffffff814d5fec #5 [ffff88003fc03ae8] ipv4_link_failure at ffffffff814a1795 #6 [ffff88003fc03af8] ipgre_tunnel_xmit at ffffffff814e7965 #7 [ffff88003fc03b78] dev_hard_start_xmit at ffffffff8146e032 #8 [ffff88003fc03bc8] sch_direct_xmit at ffffffff81487d66 #9 [ffff88003fc03c08] __qdisc_run at ffffffff81487efd #10 [ffff88003fc03c48] dev_queue_xmit at ffffffff8146e5a7 #11 [ffff88003fc03c88] ip_finish_output at ffffffff814ab596 Daniel found a similar problem mentioned in http://lkml.indiana.edu/hypermail/linux/kernel/1007.0/00961.html And indeed this is the root cause : skb->cb[] contains data fooling IP stack. We must clear IPCB in ip_tunnel_xmit() sooner in case dst_link_failure() is called. Or else skb->cb[] might contain garbage from GSO segmentation layer. A similar fix was tested on linux-3.9, but gre code was refactored in linux-3.10. I'll send patches for stable kernels as well. Many thanks to Daniel for providing reports, patches and testing ! Reported-by: Daniel Petre Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index e4147ec..be2f8da 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -503,6 +503,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, inner_iph = (const struct iphdr *)skb_inner_network_header(skb); + memset(IPCB(skb), 0, sizeof(*IPCB(skb))); dst = tnl_params->daddr; if (dst == 0) { /* NBMA tunnel */ @@ -658,7 +659,6 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, skb_dst_drop(skb); skb_dst_set(skb, &rt->dst); - memset(IPCB(skb), 0, sizeof(*IPCB(skb))); /* Push down and install the IP header. */ skb_push(skb, sizeof(struct iphdr)); -- cgit v0.10.2 From f6825748bdbe381cfffe2dc13ca0b73050428fac Mon Sep 17 00:00:00 2001 From: Martin Fuzzey Date: Mon, 15 Apr 2013 17:08:35 +0200 Subject: mmc: sdhci-esdhc-imx: Fix SDIO interrupts Currently SDIO interrupts do not work on i.MX53 and maybe others. This was observed with a Marvell 8787 based SDIO wifi adapter using the mwifiex driver and firmware from the Marvell git repository. The symptom was a timeout after firmware download. Observing the SDIO_DAT1 line showed that an interrupt was requested (level 0) but no interrupt was generated in software, the line stayed low until a timeout ocurred and the card was reset. There is a Freescale errata ENGcm11186 "eSDHC misses SDIO interrupt when CINT is disabled" The workaround suggested by this errata is already implemented and involves clearing and then setting the D3CD bit in the host control register [see esdhc_writel_le()] However, when esdhc_writeb_le() is later used to write to SDHCI_HOST_CONTROL it always resets the D3CD bit. To fix this simply add the D3CD bit to the set of bits not modified by esdhc_writeb_le(). Signed-off-by: Martin Fuzzey Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 67d6dde..9b0a0a9 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -324,8 +324,10 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) /* * Do not touch buswidth bits here. This is done in * esdhc_pltfm_bus_width. + * Do not touch the D3CD bit either which is used for the + * SDIO interrupt errata workaround. */ - mask = 0xffff & ~ESDHC_CTRL_BUSWIDTH_MASK; + mask = 0xffff & ~(ESDHC_CTRL_BUSWIDTH_MASK | ESDHC_CTRL_D3CD); esdhc_clrset_le(host, mask, new_val, reg); return; -- cgit v0.10.2 From 361b8482026c926997b1d3d5a045bc9f5bc02b16 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Fri, 15 Mar 2013 09:49:26 +0100 Subject: mmc: sdhci-esdhc-imx: fix multiblock reads on i.MX53 The eSDHC controller on the i.MX53 needs an additional, non spec compliant CMD12 after a multiblock read with a predefined number of blocks. Otherwise the internal state machine won't go back to the idle state. This commit effectively reverts 5b6b0ad6 (mmc: sdhci-esdhc-imx: fix for mmc cards on i.MX5), which fixed part of the problem by making multiblock reads work, however this fix was not sufficient when multi- and singleblock reads got intermixed. This implements the recommended workaround (Freescale i.MX Reference Manual, section 29.6.8 "Multi-block Read") by manually sending a CMD12 with the RSPTYP bits cleared. Signed-off-by: Lucas Stach Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 9b0a0a9..d5f0d59 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -85,6 +85,12 @@ struct pltfm_imx_data { struct clk *clk_ipg; struct clk *clk_ahb; struct clk *clk_per; + enum { + NO_CMD_PENDING, /* no multiblock command pending*/ + MULTIBLK_IN_PROCESS, /* exact multiblock cmd in process */ + WAIT_FOR_INT, /* sent CMD12, waiting for response INT */ + } multiblock_status; + }; static struct platform_device_id imx_esdhc_devtype[] = { @@ -154,6 +160,8 @@ static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, i static u32 esdhc_readl_le(struct sdhci_host *host, int reg) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = pltfm_host->priv; u32 val = readl(host->ioaddr + reg); if (unlikely(reg == SDHCI_CAPABILITIES)) { @@ -175,6 +183,18 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg) val &= ~ESDHC_INT_VENDOR_SPEC_DMA_ERR; val |= SDHCI_INT_ADMA_ERROR; } + + /* + * mask off the interrupt we get in response to the manually + * sent CMD12 + */ + if ((imx_data->multiblock_status == WAIT_FOR_INT) && + ((val & SDHCI_INT_RESPONSE) == SDHCI_INT_RESPONSE)) { + val &= ~SDHCI_INT_RESPONSE; + writel(SDHCI_INT_RESPONSE, host->ioaddr + + SDHCI_INT_STATUS); + imx_data->multiblock_status = NO_CMD_PENDING; + } } return val; @@ -211,6 +231,15 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); v &= ~ESDHC_VENDOR_SPEC_SDIO_QUIRK; writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); + + if (imx_data->multiblock_status == MULTIBLK_IN_PROCESS) + { + /* send a manual CMD12 with RESPTYP=none */ + data = MMC_STOP_TRANSMISSION << 24 | + SDHCI_CMD_ABORTCMD << 16; + writel(data, host->ioaddr + SDHCI_TRANSFER_MODE); + imx_data->multiblock_status = WAIT_FOR_INT; + } } if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { @@ -277,11 +306,13 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) } return; case SDHCI_COMMAND: - if ((host->cmd->opcode == MMC_STOP_TRANSMISSION || - host->cmd->opcode == MMC_SET_BLOCK_COUNT) && - (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) + if (host->cmd->opcode == MMC_STOP_TRANSMISSION) val |= SDHCI_CMD_ABORTCMD; + if ((host->cmd->opcode == MMC_SET_BLOCK_COUNT) && + (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) + imx_data->multiblock_status = MULTIBLK_IN_PROCESS; + if (is_imx6q_usdhc(imx_data)) writel(val << 16, host->ioaddr + SDHCI_TRANSFER_MODE); -- cgit v0.10.2 From 8c964df07aaf0e70d1756d204c306f69ca5023b8 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Fri, 19 Apr 2013 09:11:22 +0000 Subject: mmc: atmel-mci: convert to dma_request_slave_channel_compat() Use generic DMA DT helper. Platforms booting with or without DT populated are both supported. Signed-off-by: Ludovic Desroches Acked-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Nicolas Ferre Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index e75774f..aca59d9 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -2230,10 +2230,15 @@ static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot, mmc_free_host(slot->mmc); } -static bool atmci_filter(struct dma_chan *chan, void *slave) +static bool atmci_filter(struct dma_chan *chan, void *pdata) { - struct mci_dma_data *sl = slave; + struct mci_platform_data *sl_pdata = pdata; + struct mci_dma_data *sl; + if (!sl_pdata) + return false; + + sl = sl_pdata->dma_slave; if (sl && find_slave_dev(sl) == chan->device->dev) { chan->private = slave_data_ptr(sl); return true; @@ -2245,24 +2250,18 @@ static bool atmci_filter(struct dma_chan *chan, void *slave) static bool atmci_configure_dma(struct atmel_mci *host) { struct mci_platform_data *pdata; + dma_cap_mask_t mask; if (host == NULL) return false; pdata = host->pdev->dev.platform_data; - if (!pdata) - return false; + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); - if (pdata->dma_slave && find_slave_dev(pdata->dma_slave)) { - dma_cap_mask_t mask; - - /* Try to grab a DMA channel */ - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - host->dma.chan = - dma_request_channel(mask, atmci_filter, pdata->dma_slave); - } + host->dma.chan = dma_request_slave_channel_compat(mask, atmci_filter, pdata, + &host->pdev->dev, "rxtx"); if (!host->dma.chan) { dev_warn(&host->pdev->dev, "no DMA channel available\n"); return false; -- cgit v0.10.2 From 1d1ff45871984364056ebfc528ed31ff7f03f970 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 26 Apr 2013 11:27:21 +0300 Subject: mmc: sdhci-acpi: fix initial runtime pm status Initial runtime pm status is active. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index 7bcf74b..1da5f29 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -202,6 +202,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev) goto err_free; if (c->use_runtime_pm) { + pm_runtime_set_active(dev); pm_suspend_ignore_children(dev, 1); pm_runtime_set_autosuspend_delay(dev, 50); pm_runtime_use_autosuspend(dev); -- cgit v0.10.2 From 07a588837be0a18075fedf71e6963b5109abec03 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 26 Apr 2013 11:27:22 +0300 Subject: mmc: sdhci-acpi: add more device ids Add three more ACPI HIDs. Also, as some devices must be further distinguished by ACPI UID, slot information is now associated with HID and UID. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index 1da5f29..706d9cb 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -87,6 +87,12 @@ static const struct sdhci_ops sdhci_acpi_ops_dflt = { .enable_dma = sdhci_acpi_enable_dma, }; +static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = { + .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE, + .caps2 = MMC_CAP2_HC_ERASE_SZ, + .flags = SDHCI_ACPI_RUNTIME_PM, +}; + static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD, @@ -94,23 +100,67 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { .pm_caps = MMC_PM_KEEP_POWER, }; +static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = { +}; + +struct sdhci_acpi_uid_slot { + const char *hid; + const char *uid; + const struct sdhci_acpi_slot *slot; +}; + +static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = { + { "80860F14" , "1" , &sdhci_acpi_slot_int_emmc }, + { "80860F14" , "3" , &sdhci_acpi_slot_int_sd }, + { "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio }, + { "INT33C6" , NULL, &sdhci_acpi_slot_int_sdio }, + { "PNP0D40" }, + { }, +}; + static const struct acpi_device_id sdhci_acpi_ids[] = { - { "INT33C6", (kernel_ulong_t)&sdhci_acpi_slot_int_sdio }, - { "PNP0D40" }, + { "80860F14" }, + { "INT33BB" }, + { "INT33C6" }, + { "PNP0D40" }, { }, }; MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids); -static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid) +static const struct sdhci_acpi_slot *sdhci_acpi_get_slot_by_ids(const char *hid, + const char *uid) { - const struct acpi_device_id *id; - - for (id = sdhci_acpi_ids; id->id[0]; id++) - if (!strcmp(id->id, hid)) - return (const struct sdhci_acpi_slot *)id->driver_data; + const struct sdhci_acpi_uid_slot *u; + + for (u = sdhci_acpi_uids; u->hid; u++) { + if (strcmp(u->hid, hid)) + continue; + if (!u->uid) + return u->slot; + if (uid && !strcmp(u->uid, uid)) + return u->slot; + } return NULL; } +static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(acpi_handle handle, + const char *hid) +{ + const struct sdhci_acpi_slot *slot; + struct acpi_device_info *info; + const char *uid = NULL; + acpi_status status; + + status = acpi_get_object_info(handle, &info); + if (!ACPI_FAILURE(status) && (info->valid & ACPI_VALID_UID)) + uid = info->unique_id.string; + + slot = sdhci_acpi_get_slot_by_ids(hid, uid); + + kfree(info); + return slot; +} + static int sdhci_acpi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -148,7 +198,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev) c = sdhci_priv(host); c->host = host; - c->slot = sdhci_acpi_get_slot(hid); + c->slot = sdhci_acpi_get_slot(handle, hid); c->pdev = pdev; c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM); -- cgit v0.10.2 From 728ef3d1939e23e26067608d8d8da9571be14b1d Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 26 Apr 2013 11:27:23 +0300 Subject: mmc: sdhci-pci: add more device ids Add three more PCI device ids. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 0012d3f..701d06d 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -33,6 +33,9 @@ */ #define PCI_DEVICE_ID_INTEL_PCH_SDIO0 0x8809 #define PCI_DEVICE_ID_INTEL_PCH_SDIO1 0x880a +#define PCI_DEVICE_ID_INTEL_BYT_EMMC 0x0f14 +#define PCI_DEVICE_ID_INTEL_BYT_SDIO 0x0f15 +#define PCI_DEVICE_ID_INTEL_BYT_SD 0x0f16 /* * PCI registers @@ -304,6 +307,33 @@ static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = { .probe_slot = pch_hc_probe_slot, }; +static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot) +{ + slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE; + slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ; + return 0; +} + +static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot) +{ + slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE; + return 0; +} + +static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = { + .allow_runtime_pm = true, + .probe_slot = byt_emmc_probe_slot, +}; + +static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = { + .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, + .allow_runtime_pm = true, + .probe_slot = byt_sdio_probe_slot, +}; + +static const struct sdhci_pci_fixes sdhci_intel_byt_sd = { +}; + /* O2Micro extra registers */ #define O2_SD_LOCK_WP 0xD3 #define O2_SD_MULTI_VCC3V 0xEE @@ -856,6 +886,30 @@ static const struct pci_device_id pci_ids[] = { }, { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_BYT_EMMC, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc, + }, + + { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_BYT_SDIO, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio, + }, + + { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_BYT_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd, + }, + + { .vendor = PCI_VENDOR_ID_O2, .device = PCI_DEVICE_ID_O2_8120, .subvendor = PCI_ANY_ID, -- cgit v0.10.2 From cf5ae40b3968ca769e683b9b071685ad82ee893c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 10 May 2013 17:42:33 +0530 Subject: mmc: omap_hsmmc: Fix the DT pbias workaround for MMC controllers 2 to 5 Otherwise SDIO cards won't necessarily work when booted with device tree as we will never power down the SDIO cards. This means the SDIO card reset does not happen which at least some WLAN controllers expect to happen with ifconfig wlan0 down. The PBIAS voltage is only available for the first controller instance, so let's limit the PBIAS workaround to the first controller only. Signed-off-by: Tony Lindgren Tested-by: Luciano Coelho Signed-off-by: Balaji T K Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 6e44025..29a63d2 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -161,6 +161,7 @@ struct omap_hsmmc_host { */ struct regulator *vcc; struct regulator *vcc_aux; + int pbias_disable; void __iomem *base; resource_size_t mapbase; spinlock_t irq_lock; /* Prevent races with irq handler */ @@ -255,11 +256,11 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on, if (!host->vcc) return 0; /* - * With DT, never turn OFF the regulator. This is because + * With DT, never turn OFF the regulator for MMC1. This is because * the pbias cell programming support is still missing when * booting with Device tree */ - if (dev->of_node && !vdd) + if (host->pbias_disable && !vdd) return 0; if (mmc_slot(host).before_set_reg) @@ -1520,10 +1521,10 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) (ios->vdd == DUAL_VOLT_OCR_BIT) && /* * With pbias cell programming missing, this - * can't be allowed when booting with device + * can't be allowed on MMC1 when booting with device * tree. */ - !host->dev->of_node) { + !host->pbias_disable) { /* * The mmc_select_voltage fn of the core does * not seem to set the power_mode to @@ -1871,6 +1872,10 @@ static int omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_context_save(host); + /* This can be removed once we support PBIAS with DT */ + if (host->dev->of_node && host->mapbase == 0x4809c000) + host->pbias_disable = 1; + host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck"); /* * MMC can still work without debounce clock. -- cgit v0.10.2 From d272fbf0ca4a59339c768d76858f4add6ff36ace Mon Sep 17 00:00:00 2001 From: Matt Porter Date: Fri, 10 May 2013 17:42:34 +0530 Subject: mmc: omap_hsmmc: convert to dma_request_slave_channel_compat Convert dmaengine channel requests to use dma_request_slave_channel_compat(). This supports platforms booting with or without DT populated. Signed-off-by: Matt Porter Acked-by: Tony Lindgren Acked-by: Arnd Bergmann Signed-off-by: Balaji T K Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 29a63d2..dc89aea 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1930,14 +1930,20 @@ static int omap_hsmmc_probe(struct platform_device *pdev) dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); - host->rx_chan = dma_request_channel(mask, omap_dma_filter_fn, &rx_req); + host->rx_chan = + dma_request_slave_channel_compat(mask, omap_dma_filter_fn, + &rx_req, &pdev->dev, "rx"); + if (!host->rx_chan) { dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req); ret = -ENXIO; goto err_irq; } - host->tx_chan = dma_request_channel(mask, omap_dma_filter_fn, &tx_req); + host->tx_chan = + dma_request_slave_channel_compat(mask, omap_dma_filter_fn, + &tx_req, &pdev->dev, "tx"); + if (!host->tx_chan) { dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel %u\n", tx_req); ret = -ENXIO; -- cgit v0.10.2 From 4a29b5591faf25555fdf2b717594d50f70c15066 Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Fri, 10 May 2013 17:42:35 +0530 Subject: mmc: omap_hsmmc: Skip platform_get_resource_byname() for dt case MMC driver probe will abort for DT case because of failed platform_get_resource_byname() lookup. Fix it by skipping resource lookup byname for device tree build. Issue is hidden because hwmod populates the IO resources which helps to succeed platform_get_resource_byname() and probe. Signed-off-by: Santosh Shilimkar Signed-off-by: Balaji T K Signed-off-by: Chris Ball diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index dc89aea..eccedc7 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1911,21 +1911,23 @@ static int omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_conf_bus_power(host); - res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); - if (!res) { - dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n"); - ret = -ENXIO; - goto err_irq; - } - tx_req = res->start; + if (!pdev->dev.of_node) { + res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); + if (!res) { + dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n"); + ret = -ENXIO; + goto err_irq; + } + tx_req = res->start; - res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx"); - if (!res) { - dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n"); - ret = -ENXIO; - goto err_irq; + res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx"); + if (!res) { + dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n"); + ret = -ENXIO; + goto err_irq; + } + rx_req = res->start; } - rx_req = res->start; dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); -- cgit v0.10.2 From 9acf73b7d06eaa3fbfbfafc9c835f8fe0d751eff Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 22 May 2013 10:24:37 +0200 Subject: s390/smp: lost IPIs on cpu hotplug IPIs might be lost when a cpu gets brought offline: When stop_machine executes its state machine there is a race window for the state STOPMACHINE_DISABLE_IRQ where the to be brought offline cpu might already have irqs disabled but a different cpu still may have irqs enabled. If the enabled cpu receives an interrupt and as a result sends an IPI to the to be offlined cpu in its bottom halve context, the IPI won't be noticed before the cpu is offline. In fact the race window is much larger since there is no guarantee when an IPI will be received. To fix this check for enqueued but not yet received IPIs in the cpu_disable() path and call the respective handlers before the cpu is marked offline. Reported-by: Juergen Doelle Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 05674b6..4f977d0 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -428,34 +428,27 @@ void smp_stop_cpu(void) * This is the main routine where commands issued by other * cpus are handled. */ -static void do_ext_call_interrupt(struct ext_code ext_code, - unsigned int param32, unsigned long param64) +static void smp_handle_ext_call(void) { unsigned long bits; - int cpu; - - cpu = smp_processor_id(); - if (ext_code.code == 0x1202) - inc_irq_stat(IRQEXT_EXC); - else - inc_irq_stat(IRQEXT_EMS); - /* - * handle bit signal external calls - */ - bits = xchg(&pcpu_devices[cpu].ec_mask, 0); + /* handle bit signal external calls */ + bits = xchg(&pcpu_devices[smp_processor_id()].ec_mask, 0); if (test_bit(ec_stop_cpu, &bits)) smp_stop_cpu(); - if (test_bit(ec_schedule, &bits)) scheduler_ipi(); - if (test_bit(ec_call_function, &bits)) generic_smp_call_function_interrupt(); - if (test_bit(ec_call_function_single, &bits)) generic_smp_call_function_single_interrupt(); +} +static void do_ext_call_interrupt(struct ext_code ext_code, + unsigned int param32, unsigned long param64) +{ + inc_irq_stat(ext_code.code == 0x1202 ? IRQEXT_EXC : IRQEXT_EMS); + smp_handle_ext_call(); } void arch_send_call_function_ipi_mask(const struct cpumask *mask) @@ -760,6 +753,8 @@ int __cpu_disable(void) { unsigned long cregs[16]; + /* Handle possible pending IPIs */ + smp_handle_ext_call(); set_cpu_online(smp_processor_id(), false); /* Disable pseudo page faults on this cpu. */ pfault_fini(); -- cgit v0.10.2 From 1351c5d3b189a487fbacd5cdf2dc3e6faf12c682 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 23 May 2013 23:09:56 +0200 Subject: mac80211: assign AP_VLAN hw queues correctly A lot of code in mac80211 assumes that the hw queues are set up correctly for all interfaces (except for monitor) but this isn't true for AP_VLAN interfaces. Fix this by copying the AP master configuration when an AP VLAN is brought up, after this the AP interface can't change its configuration any more and needs to be brought down to change it, which also forces AP_VLAN interfaces down, so just copying in open() is sufficient. Reported-by: Jouni Malinen Signed-off-by: Johannes Berg diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 68f51c3..00e2238 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -474,6 +474,9 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) master->control_port_protocol; sdata->control_port_no_encrypt = master->control_port_no_encrypt; + sdata->vif.cab_queue = master->vif.cab_queue; + memcpy(sdata->vif.hw_queue, master->vif.hw_queue, + sizeof(sdata->vif.hw_queue)); break; } case NL80211_IFTYPE_AP: -- cgit v0.10.2 From c8aa22db0112f640ac6631347f850879c621840b Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 24 May 2013 01:06:09 +0200 Subject: mac80211: close AP_VLAN interfaces before unregistering all Since Eric's commit efe117ab8 ("Speedup ieee80211_remove_interfaces") there's a bug in mac80211 when it unregisters with AP_VLAN interfaces up. If the AP_VLAN interface was registered after the AP it belongs to (which is the typical case) and then we get into this code path, unregister_netdevice_many() will crash because it isn't prepared to deal with interfaces being closed in the middle of it. Exactly this happens though, because we iterate the list, find the AP master this AP_VLAN belongs to and dev_close() the dependent VLANs. After this, unregister_netdevice_many() won't pick up the fact that the AP_VLAN is already down and will do it again, causing a crash. Cc: stable@vger.kernel.org [2.6.33+] Cc: Eric Dumazet Signed-off-by: Johannes Berg diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 00e2238..ceef644 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -1703,6 +1703,15 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local) ASSERT_RTNL(); + /* + * Close all AP_VLAN interfaces first, as otherwise they + * might be closed while the AP interface they belong to + * is closed, causing unregister_netdevice_many() to crash. + */ + list_for_each_entry(sdata, &local->interfaces, list) + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + dev_close(sdata->dev); + mutex_lock(&local->iflist_mtx); list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { list_del(&sdata->list); -- cgit v0.10.2 From ac20976dcaeea3e77e40e9aac8f3799d2a22ea2b Mon Sep 17 00:00:00 2001 From: Helmut Schaa Date: Mon, 27 May 2013 10:43:09 +0200 Subject: mac80211: Allow single vif mac address change with addr_mask When changing the MAC address of a single vif mac80211 will check if the new address fits into the address mask specified by the driver. This only needs to be done when using multiple BSSIDs. Hence, check the new address only against all other vifs. Also fix the MAC address assignment on new interfaces if the user changed the address of a vif such that perm_addr is not covered by addr_mask anymore. Resolves: https://bugzilla.kernel.org/show_bug.cgi?id=57371 Signed-off-by: Helmut Schaa Signed-off-by: Jakub Kicinski Reported-by: Alessandro Lannocca Cc: Alessandro Lannocca Cc: Bruno Randolf Signed-off-by: Johannes Berg diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index ceef644..98d20c0 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -159,9 +159,10 @@ static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) return 0; } -static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr) +static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_local *local = sdata->local; + struct ieee80211_sub_if_data *iter; u64 new, mask, tmp; u8 *m; int ret = 0; @@ -181,11 +182,14 @@ static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr) mutex_lock(&local->iflist_mtx); - list_for_each_entry(sdata, &local->interfaces, list) { - if (sdata->vif.type == NL80211_IFTYPE_MONITOR) + list_for_each_entry(iter, &local->interfaces, list) { + if (iter == sdata) continue; - m = sdata->vif.addr; + if (iter->vif.type == NL80211_IFTYPE_MONITOR) + continue; + + m = iter->vif.addr; tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); @@ -209,7 +213,7 @@ static int ieee80211_change_mac(struct net_device *dev, void *addr) if (ieee80211_sdata_running(sdata)) return -EBUSY; - ret = ieee80211_verify_mac(sdata->local, sa->sa_data); + ret = ieee80211_verify_mac(sdata, sa->sa_data); if (ret) return ret; @@ -1486,7 +1490,17 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, break; } + /* + * Pick address of existing interface in case user changed + * MAC address manually, default to perm_addr. + */ m = local->hw.wiphy->perm_addr; + list_for_each_entry(sdata, &local->interfaces, list) { + if (sdata->vif.type == NL80211_IFTYPE_MONITOR) + continue; + m = sdata->vif.addr; + break; + } start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); -- cgit v0.10.2 From a87783699b23395c46bbeeb5d28f6db24897bf26 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Wed, 22 May 2013 10:48:10 +0300 Subject: iwlwifi: dvm: fix zero LQ CMD sending avoidance In 63b77bf489881747c5118476918cc8c29378ee63 iwlwifi: dvm: don't send zeroed LQ cmd I tried to avoid to send zeroed LQ cmd, but I made a (very) stupid mistake in the memcmp. Since this patch has been ported to stable, the fix should go to stable too. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=58341 Cc: stable@vger.kernel.org Reported-by: Hinnerk van Bruinehsen Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg diff --git a/drivers/net/wireless/iwlwifi/dvm/sta.c b/drivers/net/wireless/iwlwifi/dvm/sta.c index db183b4..c3c13ce 100644 --- a/drivers/net/wireless/iwlwifi/dvm/sta.c +++ b/drivers/net/wireless/iwlwifi/dvm/sta.c @@ -735,7 +735,7 @@ void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) memcpy(&lq, priv->stations[i].lq, sizeof(struct iwl_link_quality_cmd)); - if (!memcmp(&lq, &zero_lq, sizeof(lq))) + if (memcmp(&lq, &zero_lq, sizeof(lq))) send_lq = true; } spin_unlock_bh(&priv->sta_lock); -- cgit v0.10.2 From dc7b3eb900aab02e5cafbca3948d005be13fb4a5 Mon Sep 17 00:00:00 2001 From: Grzegorz Lyczba Date: Mon, 13 May 2013 23:56:24 +0200 Subject: ipvs: Fix reuse connection if real server is dead Expire cached connection for new TCP/SCTP connection if real server is down. Otherwise, IPVS uses the dead server for the reused connection, instead of a new working one. Signed-off-by: Grzegorz Lyczba Acked-by: Hans Schillstrom Acked-by: Julian Anastasov Signed-off-by: Simon Horman Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 085b588..05565d2 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1001,6 +1001,32 @@ static inline int is_tcp_reset(const struct sk_buff *skb, int nh_len) return th->rst; } +static inline bool is_new_conn(const struct sk_buff *skb, + struct ip_vs_iphdr *iph) +{ + switch (iph->protocol) { + case IPPROTO_TCP: { + struct tcphdr _tcph, *th; + + th = skb_header_pointer(skb, iph->len, sizeof(_tcph), &_tcph); + if (th == NULL) + return false; + return th->syn; + } + case IPPROTO_SCTP: { + sctp_chunkhdr_t *sch, schunk; + + sch = skb_header_pointer(skb, iph->len + sizeof(sctp_sctphdr_t), + sizeof(schunk), &schunk); + if (sch == NULL) + return false; + return sch->type == SCTP_CID_INIT; + } + default: + return false; + } +} + /* Handle response packets: rewrite addresses and send away... */ static unsigned int @@ -1612,6 +1638,15 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af) * Check if the packet belongs to an existing connection entry */ cp = pp->conn_in_get(af, skb, &iph, 0); + + if (unlikely(sysctl_expire_nodest_conn(ipvs)) && cp && cp->dest && + unlikely(!atomic_read(&cp->dest->weight)) && !iph.fragoffs && + is_new_conn(skb, &iph)) { + ip_vs_conn_expire_now(cp); + __ip_vs_conn_put(cp); + cp = NULL; + } + if (unlikely(!cp) && !iph.fragoffs) { /* No (second) fragments need to enter here, as nf_defrag_ipv6 * replayed fragment zero will already have created the cp -- cgit v0.10.2 From 2c06897e4597b1cd68ef29e4145917a751c2b4cd Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 16 May 2013 12:15:35 +0100 Subject: ARM: ux500: Only configure wake-up reasons on ux500 based platforms Multiplatform calls all enabled platforms' initcalls. In the ux500_idle_init() initcall we call into the DBx500-PRCMU which in turn executes some ux500 specific register reads/writes. When running on some !ux500 platforms this ends up causing a kernel Oops. This patch ensures the PRCMU call is only invoked when running on ux500 based platforms. Reported-by: Rob Herring Signed-off-by: Lee Jones Signed-off-by: Linus Walleij diff --git a/arch/arm/mach-ux500/cpuidle.c b/arch/arm/mach-ux500/cpuidle.c index 317a2be..a45dd09 100644 --- a/arch/arm/mach-ux500/cpuidle.c +++ b/arch/arm/mach-ux500/cpuidle.c @@ -21,6 +21,7 @@ #include #include "db8500-regs.h" +#include "id.h" static atomic_t master = ATOMIC_INIT(0); static DEFINE_SPINLOCK(master_lock); @@ -114,6 +115,9 @@ static struct cpuidle_driver ux500_idle_driver = { int __init ux500_idle_init(void) { + if (!(cpu_is_u8500_family() || cpu_is_ux540_family())) + return -ENODEV; + /* Configure wake up reasons */ prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) | PRCMU_WAKEUP(ABB)); -- cgit v0.10.2 From 67b7c75e1a42f8288450203cd80a26b11dab8582 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Fri, 24 May 2013 12:22:19 +0100 Subject: ARM: ux500: Provide supplies for AUX1, AUX2 and AUX3 This patch fixes a bug introduced in the v3.10 merge window. The AB8500 External Regulator driver has recently landed upstream, which registers each of the 3 external regulators located on the AB8500. If these regulators are marked as 'always on', there is a potential for power-loss. If they're not and are seemingly unused the Regulator subsystem will attempt to disable them to save power. This causes an issue for AUX1, AUX2 and AUX3 as they obtain their power from EXT3. So we're specifying that here to prevent EXT3 from being powered down. Signed-off-by: Lee Jones Signed-off-by: Linus Walleij diff --git a/arch/arm/mach-ux500/board-mop500-regulators.c b/arch/arm/mach-ux500/board-mop500-regulators.c index 33c353b..d6b7c85 100644 --- a/arch/arm/mach-ux500/board-mop500-regulators.c +++ b/arch/arm/mach-ux500/board-mop500-regulators.c @@ -374,6 +374,7 @@ static struct ab8500_regulator_reg_init ab8500_reg_init[] = { static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = { /* supplies to the display/camera */ [AB8500_LDO_AUX1] = { + .supply_regulator = "ab8500-ext-supply3", .constraints = { .name = "V-DISPLAY", .min_uV = 2800000, @@ -387,6 +388,7 @@ static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = { }, /* supplies to the on-board eMMC */ [AB8500_LDO_AUX2] = { + .supply_regulator = "ab8500-ext-supply3", .constraints = { .name = "V-eMMC1", .min_uV = 1100000, @@ -402,6 +404,7 @@ static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = { }, /* supply for VAUX3, supplies to SDcard slots */ [AB8500_LDO_AUX3] = { + .supply_regulator = "ab8500-ext-supply3", .constraints = { .name = "V-MMC-SD", .min_uV = 1100000, -- cgit v0.10.2 From 449875756055e2fff6074b4e69b35b9583f9f84d Mon Sep 17 00:00:00 2001 From: "Lad, Prabhakar" Date: Mon, 13 May 2013 06:39:07 -0300 Subject: [media] drivers/staging: davinci: vpfe: fix dependency for building the driver from commit 3778d05036cc7ddd983ae2451da579af00acdac2 [media: davinci: kconfig: fix incorrect selects] VIDEO_VPFE_CAPTURE was removed but there was a negative dependancy for building the DM365 VPFE MC based capture driver (VIDEO_DM365_VPFE), This patch fixes this dependency by replacing the VIDEO_VPFE_CAPTURE with VIDEO_DM365_ISIF, so as when older DM365 ISIF v4l driver is selected the newer media controller driver for DM365 isnt visible. Reported-by: Paul Bolle Signed-off-by: Lad, Prabhakar Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/staging/media/davinci_vpfe/Kconfig b/drivers/staging/media/davinci_vpfe/Kconfig index 2e4a28b..12f321d 100644 --- a/drivers/staging/media/davinci_vpfe/Kconfig +++ b/drivers/staging/media/davinci_vpfe/Kconfig @@ -1,6 +1,6 @@ config VIDEO_DM365_VPFE tristate "DM365 VPFE Media Controller Capture Driver" - depends on VIDEO_V4L2 && ARCH_DAVINCI_DM365 && !VIDEO_VPFE_CAPTURE + depends on VIDEO_V4L2 && ARCH_DAVINCI_DM365 && !VIDEO_DM365_ISIF select VIDEOBUF2_DMA_CONTIG help Support for DM365 VPFE based Media Controller Capture driver. -- cgit v0.10.2 From 6719a4974600fdaa4a3ac2ea2aed819a35d06605 Mon Sep 17 00:00:00 2001 From: Xiong Zhou Date: Fri, 17 May 2013 07:24:05 -0300 Subject: [media] staging/solo6x10: select the desired font Make sure FONT_8x16 can be found by find_font(). Signed-off-by: Xiong Zhou Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/staging/media/solo6x10/Kconfig b/drivers/staging/media/solo6x10/Kconfig index ec32776..0bc743b 100644 --- a/drivers/staging/media/solo6x10/Kconfig +++ b/drivers/staging/media/solo6x10/Kconfig @@ -4,6 +4,7 @@ config SOLO6X10 select VIDEOBUF2_DMA_SG select VIDEOBUF2_DMA_CONTIG select SND_PCM + select FONT_8x16 ---help--- This driver supports the Softlogic based MPEG-4 and h.264 codec cards. -- cgit v0.10.2 From 9ecb41bd8cf002fd8f3e063db4df81647ddd623c Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Mon, 27 May 2013 16:03:40 +0200 Subject: dmaengine: ste_dma40: fix pm runtime ref counting The pm runtime reference counting of the driver is broken for the case when there is more than one transfer queued, leading to the device being runtime suspend while active. Fix it. Signed-off-by: Rabin Vincent Acked-by: Linus Walleij Cc: stable@vger.kernel.org Signed-off-by: Vinod Koul diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 1734fee..71bf4ec 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1566,10 +1566,12 @@ static void dma_tc_handle(struct d40_chan *d40c) return; } - if (d40_queue_start(d40c) == NULL) + if (d40_queue_start(d40c) == NULL) { d40c->busy = false; - pm_runtime_mark_last_busy(d40c->base->dev); - pm_runtime_put_autosuspend(d40c->base->dev); + + pm_runtime_mark_last_busy(d40c->base->dev); + pm_runtime_put_autosuspend(d40c->base->dev); + } d40_desc_remove(d40d); d40_desc_done(d40c, d40d); -- cgit v0.10.2 From 9a9c56cb34e65000d1f0a4b7553399bfcf7c5a52 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Sun, 26 May 2013 21:31:28 +0000 Subject: net: phy: fix a bug when verify the EEE support The phy_init_eee has to exit with an error when the local device and its link partner both do not support EEE. So this patch fixes a problem when verify this. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index c14f147..38f0b31 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -1044,7 +1044,7 @@ int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); idx = phy_find_setting(phydev->speed, phydev->duplex); - if ((lp & adv & settings[idx].setting)) + if (!(lp & adv & settings[idx].setting)) goto eee_exit; if (clk_stop_enable) { -- cgit v0.10.2 From f96ef988cc603487c03a6de07807b06cbe641829 Mon Sep 17 00:00:00 2001 From: Michal Kubecek Date: Tue, 28 May 2013 08:26:49 +0200 Subject: ipv4: fix redirect handling for TCP packets Unlike ipv4_redirect() and ipv4_sk_redirect(), ip_do_redirect() doesn't call __build_flow_key() directly but via ip_rt_build_flow_key() wrapper. This leads to __build_flow_key() getting pointer to IPv4 header of the ICMP redirect packet rather than pointer to the embedded IPv4 header of the packet initiating the redirect. As a result, handling of ICMP redirects initiated by TCP packets is broken. Issue was introduced by 4895c771c ("ipv4: Add FIB nexthop exceptions.") Signed-off-by: Michal Kubecek Signed-off-by: David S. Miller diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 550781a..d35bbf0 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -737,10 +737,15 @@ static void ip_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_buf { struct rtable *rt; struct flowi4 fl4; + const struct iphdr *iph = (const struct iphdr *) skb->data; + int oif = skb->dev->ifindex; + u8 tos = RT_TOS(iph->tos); + u8 prot = iph->protocol; + u32 mark = skb->mark; rt = (struct rtable *) dst; - ip_rt_build_flow_key(&fl4, sk, skb); + __build_flow_key(&fl4, sk, iph, oif, tos, prot, mark, 0); __ip_do_redirect(rt, skb, &fl4, true); } -- cgit v0.10.2 From 2938d2757fc99c26aa678ce4eba910c4a77c3a55 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 28 May 2013 09:33:01 +0200 Subject: tick: Cure broadcast false positive pending bit warning commit 26517f3e (tick: Avoid programming the local cpu timer if broadcast pending) added a warning if the cpu enters broadcast mode again while the pending bit is still set. Meelis reported that the warning triggers. There are two corner cases which have been not considered: 1) cpuidle calls clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER) twice. That can result in the following scenario CPU0 CPU1 cpuidle_idle_call() clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER) set cpu in tick_broadcast_oneshot_mask broadcast interrupt event expired for cpu1 set pending bit acpi_idle_enter_simple() clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER) WARN_ON(pending bit) Move the WARN_ON into the section where we enter broadcast mode so it wont provide false positives on the second call. 2) safe_halt() enables interrupts, so a broadcast interrupt can be delivered befor the broadcast mode is disabled. That sets the pending bit for the CPU which receives the broadcast interrupt. Though the interrupt is delivered right away from the broadcast handler and leaves the pending bit stale. Clear the pending bit for the current cpu in the broadcast handler. Reported-and-tested-by: Meelis Roos Cc: Len Brown Cc: Frederic Weisbecker Cc: Borislav Petkov Cc: Rafael J. Wysocki Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1305271841130.4220@ionos Signed-off-by: Thomas Gleixner diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index 24938d5..0c73942 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -511,6 +511,12 @@ again: } } + /* + * Remove the current cpu from the pending mask. The event is + * delivered immediately in tick_do_broadcast() ! + */ + cpumask_clear_cpu(smp_processor_id(), tick_broadcast_pending_mask); + /* Take care of enforced broadcast requests */ cpumask_or(tmpmask, tmpmask, tick_broadcast_force_mask); cpumask_clear(tick_broadcast_force_mask); @@ -575,8 +581,8 @@ void tick_broadcast_oneshot_control(unsigned long reason) raw_spin_lock_irqsave(&tick_broadcast_lock, flags); if (reason == CLOCK_EVT_NOTIFY_BROADCAST_ENTER) { - WARN_ON_ONCE(cpumask_test_cpu(cpu, tick_broadcast_pending_mask)); if (!cpumask_test_and_set_cpu(cpu, tick_broadcast_oneshot_mask)) { + WARN_ON_ONCE(cpumask_test_cpu(cpu, tick_broadcast_pending_mask)); clockevents_set_mode(dev, CLOCK_EVT_MODE_SHUTDOWN); /* * We only reprogram the broadcast timer if we -- cgit v0.10.2 From d5b4c2f4938aaebc392669111385c3cf50dd309f Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 27 May 2013 17:55:13 +0800 Subject: arch: s390: appldata: using strncpy() and strnlen() instead of sprintf() 'buf[2]' is 2 bytes length, and sprintf() will append '\0' at the end of string "?\n", so original implementation is memory overflow. Need use strncpy() and strnlen() instead of sprintf(). Signed-off-by: Chen Gang Signed-off-by: Gerald Schaefer Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index bae0f40..87a2209 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -212,7 +212,9 @@ appldata_timer_handler(ctl_table *ctl, int write, return 0; } if (!write) { - len = sprintf(buf, appldata_timer_active ? "1\n" : "0\n"); + strncpy(buf, appldata_timer_active ? "1\n" : "0\n", + ARRAY_SIZE(buf)); + len = strnlen(buf, ARRAY_SIZE(buf)); if (len > *lenp) len = *lenp; if (copy_to_user(buffer, buf, len)) @@ -317,7 +319,8 @@ appldata_generic_handler(ctl_table *ctl, int write, return 0; } if (!write) { - len = sprintf(buf, ops->active ? "1\n" : "0\n"); + strncpy(buf, ops->active ? "1\n" : "0\n", ARRAY_SIZE(buf)); + len = strnlen(buf, ARRAY_SIZE(buf)); if (len > *lenp) len = *lenp; if (copy_to_user(buffer, buf, len)) { -- cgit v0.10.2 From 7b959fc582741227a1c4cba710d6aff8fb183128 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 22 May 2013 18:34:09 +0900 Subject: kprobes: Fix to free gone and unused optprobes Fix to free gone and unused optprobes. This bug will cause a kernel panic if the user reuses the killed and unused probe. Reported at: http://sourceware.org/ml/systemtap/2013-q2/msg00142.html In the normal path, an optprobe on an init function is unregistered when a module goes live. unregister_kprobe(kp) -> __unregister_kprobe_top ->__disable_kprobe ->disarm_kprobe(ap == op) ->__disarm_kprobe ->unoptimize_kprobe : the op is queued on unoptimizing_list and do nothing in __unregister_kprobe_bottom After a while (usually wait 5 jiffies), kprobe_optimizer runs to unoptimize and free optprobe. kprobe_optimizer ->do_unoptimize_kprobes ->arch_unoptimize_kprobes : moved to free_list ->do_free_cleaned_kprobes ->hlist_del: the op is removed ->free_aggr_kprobe ->arch_remove_optimized_kprobe ->arch_remove_kprobe ->kfree: the op is freed Here, if kprobes_module_callback is called and the delayed unoptimizing probe is picked BEFORE kprobe_optimizer runs, kprobes_module_callback ->kill_kprobe ->kill_optimized_kprobe : dequeued from unoptimizing_list <=!!! ->arch_remove_optimized_kprobe ->arch_remove_kprobe (but op is not freed, and on the kprobe hash table) This doesn't happen if the probe unregistration is done AFTER kprobes_module_callback is called (because at that time the op is gone), and kprobe-tracer does it. To fix this bug, this patch changes kprobes_module_callback to enqueue the op to freeing_list at kill_optimized_kprobe only if the op is unused. The unused probes on freeing_list will be freed in do_free_cleaned_kprobes. Note that this calls arch_remove_*kprobe twice on the same probe. Thus those functions have to check the double free. Fortunately, most of arch codes already checked that except for mips. This will be fixed in the next patch. Signed-off-by: Masami Hiramatsu Cc: Timo Juhani Lindfors Cc: Ananth N Mavinakayanahalli Cc: Anil S Keshavamurthy Cc: Frank Ch. Eigler Cc: systemtap@sourceware.org Cc: yrl.pp-manager.tt@hitachi.com Cc: David S. Miller Cc: "David S. Miller" Link: http://lkml.kernel.org/r/20130522093409.9084.63554.stgit@mhiramat-M0-7522 [ Minor edits. ] Signed-off-by: Ingo Molnar diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 3fed7f0..bddf3b2 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -467,6 +467,7 @@ static struct kprobe *__kprobes get_optimized_kprobe(unsigned long addr) /* Optimization staging list, protected by kprobe_mutex */ static LIST_HEAD(optimizing_list); static LIST_HEAD(unoptimizing_list); +static LIST_HEAD(freeing_list); static void kprobe_optimizer(struct work_struct *work); static DECLARE_DELAYED_WORK(optimizing_work, kprobe_optimizer); @@ -504,7 +505,7 @@ static __kprobes void do_optimize_kprobes(void) * Unoptimize (replace a jump with a breakpoint and remove the breakpoint * if need) kprobes listed on unoptimizing_list. */ -static __kprobes void do_unoptimize_kprobes(struct list_head *free_list) +static __kprobes void do_unoptimize_kprobes(void) { struct optimized_kprobe *op, *tmp; @@ -515,9 +516,9 @@ static __kprobes void do_unoptimize_kprobes(struct list_head *free_list) /* Ditto to do_optimize_kprobes */ get_online_cpus(); mutex_lock(&text_mutex); - arch_unoptimize_kprobes(&unoptimizing_list, free_list); + arch_unoptimize_kprobes(&unoptimizing_list, &freeing_list); /* Loop free_list for disarming */ - list_for_each_entry_safe(op, tmp, free_list, list) { + list_for_each_entry_safe(op, tmp, &freeing_list, list) { /* Disarm probes if marked disabled */ if (kprobe_disabled(&op->kp)) arch_disarm_kprobe(&op->kp); @@ -536,11 +537,11 @@ static __kprobes void do_unoptimize_kprobes(struct list_head *free_list) } /* Reclaim all kprobes on the free_list */ -static __kprobes void do_free_cleaned_kprobes(struct list_head *free_list) +static __kprobes void do_free_cleaned_kprobes(void) { struct optimized_kprobe *op, *tmp; - list_for_each_entry_safe(op, tmp, free_list, list) { + list_for_each_entry_safe(op, tmp, &freeing_list, list) { BUG_ON(!kprobe_unused(&op->kp)); list_del_init(&op->list); free_aggr_kprobe(&op->kp); @@ -556,8 +557,6 @@ static __kprobes void kick_kprobe_optimizer(void) /* Kprobe jump optimizer */ static __kprobes void kprobe_optimizer(struct work_struct *work) { - LIST_HEAD(free_list); - mutex_lock(&kprobe_mutex); /* Lock modules while optimizing kprobes */ mutex_lock(&module_mutex); @@ -566,7 +565,7 @@ static __kprobes void kprobe_optimizer(struct work_struct *work) * Step 1: Unoptimize kprobes and collect cleaned (unused and disarmed) * kprobes before waiting for quiesence period. */ - do_unoptimize_kprobes(&free_list); + do_unoptimize_kprobes(); /* * Step 2: Wait for quiesence period to ensure all running interrupts @@ -581,7 +580,7 @@ static __kprobes void kprobe_optimizer(struct work_struct *work) do_optimize_kprobes(); /* Step 4: Free cleaned kprobes after quiesence period */ - do_free_cleaned_kprobes(&free_list); + do_free_cleaned_kprobes(); mutex_unlock(&module_mutex); mutex_unlock(&kprobe_mutex); @@ -723,8 +722,19 @@ static void __kprobes kill_optimized_kprobe(struct kprobe *p) if (!list_empty(&op->list)) /* Dequeue from the (un)optimization queue */ list_del_init(&op->list); - op->kp.flags &= ~KPROBE_FLAG_OPTIMIZED; + + if (kprobe_unused(p)) { + /* Enqueue if it is unused */ + list_add(&op->list, &freeing_list); + /* + * Remove unused probes from the hash list. After waiting + * for synchronization, this probe is reclaimed. + * (reclaiming is done by do_free_cleaned_kprobes().) + */ + hlist_del_rcu(&op->kp.hlist); + } + /* Don't touch the code, because it is already freed. */ arch_remove_optimized_kprobe(op); } -- cgit v0.10.2 From 26cb63ad11e04047a64309362674bcbbd6a6f246 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 28 May 2013 10:55:48 +0200 Subject: perf: Fix perf mmap bugs Vince reported a problem found by his perf specific trinity fuzzer. Al noticed 2 problems with perf's mmap(): - it has issues against fork() since we use vma->vm_mm for accounting. - it has an rb refcount leak on double mmap(). We fix the issues against fork() by using VM_DONTCOPY; I don't think there's code out there that uses this; we didn't hear about weird accounting problems/crashes. If we do need this to work, the previously proposed VM_PINNED could make this work. Aside from the rb reference leak spotted by Al, Vince's example prog was indeed doing a double mmap() through the use of perf_event_set_output(). This exposes another problem, since we now have 2 events with one buffer, the accounting gets screwy because we account per event. Fix this by making the buffer responsible for its own accounting. Reported-by: Vince Weaver Signed-off-by: Peter Zijlstra Cc: Al Viro Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo Link: http://lkml.kernel.org/r/20130528085548.GA12193@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index f463a46..c5b6dbf 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -389,8 +389,7 @@ struct perf_event { /* mmap bits */ struct mutex mmap_mutex; atomic_t mmap_count; - int mmap_locked; - struct user_struct *mmap_user; + struct ring_buffer *rb; struct list_head rb_entry; diff --git a/kernel/events/core.c b/kernel/events/core.c index 9dc297f..ae752cd 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -2917,7 +2917,7 @@ static void free_event_rcu(struct rcu_head *head) kfree(event); } -static void ring_buffer_put(struct ring_buffer *rb); +static bool ring_buffer_put(struct ring_buffer *rb); static void free_event(struct perf_event *event) { @@ -3582,13 +3582,13 @@ static struct ring_buffer *ring_buffer_get(struct perf_event *event) return rb; } -static void ring_buffer_put(struct ring_buffer *rb) +static bool ring_buffer_put(struct ring_buffer *rb) { struct perf_event *event, *n; unsigned long flags; if (!atomic_dec_and_test(&rb->refcount)) - return; + return false; spin_lock_irqsave(&rb->event_lock, flags); list_for_each_entry_safe(event, n, &rb->event_list, rb_entry) { @@ -3598,6 +3598,7 @@ static void ring_buffer_put(struct ring_buffer *rb) spin_unlock_irqrestore(&rb->event_lock, flags); call_rcu(&rb->rcu_head, rb_free_rcu); + return true; } static void perf_mmap_open(struct vm_area_struct *vma) @@ -3612,18 +3613,20 @@ static void perf_mmap_close(struct vm_area_struct *vma) struct perf_event *event = vma->vm_file->private_data; if (atomic_dec_and_mutex_lock(&event->mmap_count, &event->mmap_mutex)) { - unsigned long size = perf_data_size(event->rb); - struct user_struct *user = event->mmap_user; struct ring_buffer *rb = event->rb; + struct user_struct *mmap_user = rb->mmap_user; + int mmap_locked = rb->mmap_locked; + unsigned long size = perf_data_size(rb); - atomic_long_sub((size >> PAGE_SHIFT) + 1, &user->locked_vm); - vma->vm_mm->pinned_vm -= event->mmap_locked; rcu_assign_pointer(event->rb, NULL); ring_buffer_detach(event, rb); mutex_unlock(&event->mmap_mutex); - ring_buffer_put(rb); - free_uid(user); + if (ring_buffer_put(rb)) { + atomic_long_sub((size >> PAGE_SHIFT) + 1, &mmap_user->locked_vm); + vma->vm_mm->pinned_vm -= mmap_locked; + free_uid(mmap_user); + } } } @@ -3676,9 +3679,7 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) WARN_ON_ONCE(event->ctx->parent_ctx); mutex_lock(&event->mmap_mutex); if (event->rb) { - if (event->rb->nr_pages == nr_pages) - atomic_inc(&event->rb->refcount); - else + if (event->rb->nr_pages != nr_pages) ret = -EINVAL; goto unlock; } @@ -3720,12 +3721,14 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) ret = -ENOMEM; goto unlock; } - rcu_assign_pointer(event->rb, rb); + + rb->mmap_locked = extra; + rb->mmap_user = get_current_user(); atomic_long_add(user_extra, &user->locked_vm); - event->mmap_locked = extra; - event->mmap_user = get_current_user(); - vma->vm_mm->pinned_vm += event->mmap_locked; + vma->vm_mm->pinned_vm += extra; + + rcu_assign_pointer(event->rb, rb); perf_event_update_userpage(event); @@ -3734,7 +3737,7 @@ unlock: atomic_inc(&event->mmap_count); mutex_unlock(&event->mmap_mutex); - vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND | VM_DONTDUMP; vma->vm_ops = &perf_mmap_vmops; return ret; diff --git a/kernel/events/internal.h b/kernel/events/internal.h index eb675c4..5bc6c8e 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -31,6 +31,9 @@ struct ring_buffer { spinlock_t event_lock; struct list_head event_list; + int mmap_locked; + struct user_struct *mmap_user; + struct perf_event_mmap_page *user_page; void *data_pages[0]; }; -- cgit v0.10.2 From 15ef0298deb3929eb6ad6d2334fd2059fd53807c Mon Sep 17 00:00:00 2001 From: Pavel Tikhomirov Date: Fri, 17 May 2013 02:12:03 +0400 Subject: posix-timers: Show clock ID in proc file Expand information about posix-timers in /proc//timers by adding info about clock, with which the timer was created. I.e. in the forth line of timer info after "notify:" line go "ClockID: ". Signed-off-by: Pavel Tikhomirov Cc: Michael Kerrisk Cc: Matthew Helsley Cc: Pavel Emelyanov Link: http://lkml.kernel.org/r/1368742323-46949-2-git-send-email-snorcht@gmail.com Signed-off-by: Thomas Gleixner diff --git a/fs/proc/base.c b/fs/proc/base.c index dd51e50..c3834da 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2118,6 +2118,7 @@ static int show_timer(struct seq_file *m, void *v) nstr[notify & ~SIGEV_THREAD_ID], (notify & SIGEV_THREAD_ID) ? "tid" : "pid", pid_nr_ns(timer->it_pid, tp->ns)); + seq_printf(m, "ClockID: %d\n", timer->it_clock); return 0; } -- cgit v0.10.2 From b56433cb782d1cc7e44fc46d2ce3917fa75d2236 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Mon, 27 May 2013 16:19:55 +0200 Subject: s390/pgtable: Fix check for pgste/storage key handling pte_present might return true on PAGE_TYPE_NONE, even if the invalid bit is on. Modify the existing check of the pgste functions to avoid crashes. [ Martin Schwidefsky: added ptep_modify_prot_[start|commit] bits ] Reported-by: Martin Schwidefky Signed-off-by: Christian Borntraeger CC: stable@vger.kernel.org Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 0f0de30..ac01463 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -646,7 +646,7 @@ static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste) unsigned long address, bits; unsigned char skey; - if (!pte_present(*ptep)) + if (pte_val(*ptep) & _PAGE_INVALID) return pgste; address = pte_val(*ptep) & PAGE_MASK; skey = page_get_storage_key(address); @@ -680,7 +680,7 @@ static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste) #ifdef CONFIG_PGSTE int young; - if (!pte_present(*ptep)) + if (pte_val(*ptep) & _PAGE_INVALID) return pgste; /* Get referenced bit from storage key */ young = page_reset_referenced(pte_val(*ptep) & PAGE_MASK); @@ -706,7 +706,7 @@ static inline void pgste_set_key(pte_t *ptep, pgste_t pgste, pte_t entry) unsigned long address; unsigned long okey, nkey; - if (!pte_present(entry)) + if (pte_val(entry) & _PAGE_INVALID) return; address = pte_val(entry) & PAGE_MASK; okey = nkey = page_get_storage_key(address); @@ -1098,6 +1098,9 @@ static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, pte = *ptep; if (!mm_exclusive(mm)) __ptep_ipte(address, ptep); + + if (mm_has_pgste(mm)) + pgste = pgste_update_all(&pte, pgste); return pte; } @@ -1105,9 +1108,13 @@ static inline void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long address, pte_t *ptep, pte_t pte) { + pgste_t pgste; + if (mm_has_pgste(mm)) { + pgste = *(pgste_t *)(ptep + PTRS_PER_PTE); + pgste_set_key(ptep, pgste, pte); pgste_set_pte(ptep, pte); - pgste_set_unlock(ptep, *(pgste_t *)(ptep + PTRS_PER_PTE)); + pgste_set_unlock(ptep, pgste); } else *ptep = pte; } -- cgit v0.10.2 From 1d7004f0593f631b78745e4c835d8e09b31f4996 Mon Sep 17 00:00:00 2001 From: Frederico Cadete Date: Sat, 25 May 2013 22:48:57 +0200 Subject: xmem/tmem: fix 'undefined variable' build error. In the (not so useful) kernel configuration where CONFIG_SWAP is undefined and CONFIG_XEN_SELFBALLOONING is defined, xen_tmem_init would use undefined variable 'static bool frontswap'. Added #else to have #define frontswap (0) in the case where CONFIG_FRONTSWAP is not defined. Signed-off-by: Frederico Cadete Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c index 18e8bd8..cc072c6 100644 --- a/drivers/xen/tmem.c +++ b/drivers/xen/tmem.c @@ -41,6 +41,8 @@ module_param(selfballooning, bool, S_IRUGO); #ifdef CONFIG_FRONTSWAP static bool frontswap __read_mostly = true; module_param(frontswap, bool, S_IRUGO); +#else /* CONFIG_FRONTSWAP */ +#define frontswap (0) #endif /* CONFIG_FRONTSWAP */ #ifdef CONFIG_XEN_SELFBALLOONING -- cgit v0.10.2 From d3134e211e8db7fa833c40b5879fc022693e16c2 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Tue, 28 May 2013 15:41:57 +0530 Subject: ASoC: wm8994: use the correct pointer to get the control value Signed-off-by: Vinod Koul Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 1eb152c..62dc305 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -1031,7 +1031,7 @@ static int aif1clk_ev(struct snd_soc_dapm_widget *w, { struct snd_soc_codec *codec = w->codec; struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); - struct wm8994 *control = codec->control_data; + struct wm8994 *control = wm8994->wm8994; int mask = WM8994_AIF1DAC1L_ENA | WM8994_AIF1DAC1R_ENA; int i; int dac; -- cgit v0.10.2 From 9767a58b8b2a0b153c246fb6306c7d48d51bb379 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 28 May 2013 12:52:08 +0100 Subject: ASoC: wm8994: Fix reporting of accessory removal on WM8958 During recent refactoring the code to report removal when MICDET reports an absent microphone was removed, causing problems for systems which rely solely on the MICDET for this functionality. Restore it. Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 62dc305..b38382c 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -3833,6 +3833,11 @@ static irqreturn_t wm8958_mic_irq(int irq, void *data) dev_dbg(codec->dev, "Ignoring removed jack\n"); return IRQ_HANDLED; } + } else if (!(reg & WM8958_MICD_STS)) { + snd_soc_jack_report(wm8994->micdet[0].jack, 0, + SND_JACK_MECHANICAL | SND_JACK_HEADSET | + wm8994->btn_mask); + goto out; } if (wm8994->mic_detecting) -- cgit v0.10.2 From 7d6898be8db92450ce7a0afcc4238680b9703e2b Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Tue, 28 May 2013 15:06:42 +0530 Subject: ASoC: wm8994: check for array index returned The array 'drc_cfg' of size 3 may use index value -22 (EINVAL) The array 'retune_mobile_cfg' of size 3 may use index value -22 (EINVAL) Signed-off-by: Vinod Koul Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index b38382c..dfd997a 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -383,6 +383,8 @@ static int wm8994_get_drc_enum(struct snd_kcontrol *kcontrol, struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); int drc = wm8994_get_drc(kcontrol->id.name); + if (drc < 0) + return drc; ucontrol->value.enumerated.item[0] = wm8994->drc_cfg[drc]; return 0; @@ -488,6 +490,9 @@ static int wm8994_get_retune_mobile_enum(struct snd_kcontrol *kcontrol, struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); int block = wm8994_get_retune_mobile_block(kcontrol->id.name); + if (block < 0) + return block; + ucontrol->value.enumerated.item[0] = wm8994->retune_mobile_cfg[block]; return 0; -- cgit v0.10.2 From 04d245b7899c020559402841d2f70ddd740a7704 Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Thu, 23 May 2013 16:53:02 +0200 Subject: ASoC: cs42l52: fix default value for MASTERA_VOL. The default register value for MASTERA_VOL is 0x00, the same as MASTERB_VOL. Signed-off-by: Nicolas Schichan Acked-by: Brian Austin Signed-off-by: Mark Brown Cc: stable@vger.kernel.org diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c index 8465c1fa..030f53c 100644 --- a/sound/soc/codecs/cs42l52.c +++ b/sound/soc/codecs/cs42l52.c @@ -86,7 +86,7 @@ static const struct reg_default cs42l52_reg_defaults[] = { { CS42L52_BEEP_VOL, 0x00 }, /* r1D Beep Volume off Time */ { CS42L52_BEEP_TONE_CTL, 0x00 }, /* r1E Beep Tone Cfg. */ { CS42L52_TONE_CTL, 0x00 }, /* r1F Tone Ctl */ - { CS42L52_MASTERA_VOL, 0x88 }, /* r20 Master A Volume */ + { CS42L52_MASTERA_VOL, 0x00 }, /* r20 Master A Volume */ { CS42L52_MASTERB_VOL, 0x00 }, /* r21 Master B Volume */ { CS42L52_HPA_VOL, 0x00 }, /* r22 Headphone A Volume */ { CS42L52_HPB_VOL, 0x00 }, /* r23 Headphone B Volume */ -- cgit v0.10.2 From e89b4058096569c999fa599370162022a5a2b3d2 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Tue, 21 May 2013 19:41:48 +0200 Subject: ARM: Kirkwood: TS219: Fix crash by double PCIe instantiation When creating the DT based boards-ts219.c the none DT ts219-setup.c was used as a template. This includes a lateinit() call to initialize the PCIe bus. The code makes use of machine_is_ts219() which is never true on DT, so a FIXME was added and the code left as is. This was unproblematic until b73690c8f8b5d: "ARM: Kirkwood: Support basic hotplug for PCI-E" which changes the way the PCIe bus is initialized. The non-DT ts219-setup.c now crashes during boot. The lateinit() call in the DT boards-ts219.c is being called, machine_is_ts219() is true and so the PCIe is initialized a second time. This patch removes the useless, and now clearly dangerous, code from boards-ts219.c, making ts219-setup.c work again. Signed-off-by: Andrew Lunn Cc: # v3.9.x Signed-off-by: Jason Cooper diff --git a/arch/arm/mach-kirkwood/board-ts219.c b/arch/arm/mach-kirkwood/board-ts219.c index acb0187..4695d5f 100644 --- a/arch/arm/mach-kirkwood/board-ts219.c +++ b/arch/arm/mach-kirkwood/board-ts219.c @@ -41,13 +41,3 @@ void __init qnap_dt_ts219_init(void) pm_power_off = qnap_tsx1x_power_off; } - -/* FIXME: Will not work with DT. Maybe use MPP40_GPIO? */ -static int __init ts219_pci_init(void) -{ - if (machine_is_ts219()) - kirkwood_pcie_init(KW_PCIE0); - - return 0; -} -subsys_initcall(ts219_pci_init); -- cgit v0.10.2 From b60b61d41220c8d34e2c62a748bc78bc5d40585e Mon Sep 17 00:00:00 2001 From: Nadav Haklai Date: Thu, 23 May 2013 10:54:02 +0200 Subject: ARM: mvebu: Fix bug in coherency fabric low level init function When adding CPU to the SMP group and enabling the coherency on this CPU we must protect the register access. The previous implementation claims to be atomic but doesn't provide any protection against parallel access to the coherency fabric control and configuration registers. This patch fixes this by using the ldrex and strex mechanism. This method should be used in all accesses to those registers. [gregory.clement@free-electrons.com: fixed the commit's topic] Signed-off-by: Nadav Haklai Signed-off-by: Gregory CLEMENT Signed-off-by: Jason Cooper diff --git a/arch/arm/mach-mvebu/coherency_ll.S b/arch/arm/mach-mvebu/coherency_ll.S index 53e8391..5476669 100644 --- a/arch/arm/mach-mvebu/coherency_ll.S +++ b/arch/arm/mach-mvebu/coherency_ll.S @@ -32,15 +32,21 @@ ENTRY(ll_set_cpu_coherent) /* Add CPU to SMP group - Atomic */ add r3, r0, #ARMADA_XP_CFB_CTL_REG_OFFSET - ldr r2, [r3] +1: + ldrex r2, [r3] orr r2, r2, r1 - str r2, [r3] + strex r0, r2, [r3] + cmp r0, #0 + bne 1b /* Enable coherency on CPU - Atomic */ - add r3, r0, #ARMADA_XP_CFB_CFG_REG_OFFSET - ldr r2, [r3] + add r3, r3, #ARMADA_XP_CFB_CFG_REG_OFFSET +1: + ldrex r2, [r3] orr r2, r2, r1 - str r2, [r3] + strex r0, r2, [r3] + cmp r0, #0 + bne 1b dsb -- cgit v0.10.2 From 6390460af8a672754dd6743f326515e98f52b2a7 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 20 May 2013 23:05:15 +0530 Subject: net/9p: Handle error in zero copy request correctly for 9p2000.u For zero copy request, error will be encoded in the user space buffer. So copy the error code correctly using copy_from_user. Here we use the extra bytes we allocate for zero copy request. If total error details are more than P9_ZC_HDR_SZ - 7 bytes, we return -EFAULT. The patch also avoid a memory allocation in the error path. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen diff --git a/net/9p/client.c b/net/9p/client.c index 8eb7542..addc116c 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -562,36 +562,19 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req, if (!p9_is_proto_dotl(c)) { /* Error is reported in string format */ - uint16_t len; - /* 7 = header size for RERROR, 2 is the size of string len; */ - int inline_len = in_hdrlen - (7 + 2); + int len; + /* 7 = header size for RERROR; */ + int inline_len = in_hdrlen - 7; - /* Read the size of error string */ - err = p9pdu_readf(req->rc, c->proto_version, "w", &len); - if (err) - goto out_err; - - ename = kmalloc(len + 1, GFP_NOFS); - if (!ename) { - err = -ENOMEM; + len = req->rc->size - req->rc->offset; + if (len > (P9_ZC_HDR_SZ - 7)) { + err = -EFAULT; goto out_err; } - if (len <= inline_len) { - /* We have error in protocol buffer itself */ - if (pdu_read(req->rc, ename, len)) { - err = -EFAULT; - goto out_free; - } - } else { - /* - * Part of the data is in user space buffer. - */ - if (pdu_read(req->rc, ename, inline_len)) { - err = -EFAULT; - goto out_free; - - } + ename = &req->rc->sdata[req->rc->offset]; + if (len > inline_len) { + /* We have error in external buffer */ if (kern_buf) { memcpy(ename + inline_len, uidata, len - inline_len); @@ -600,19 +583,19 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req, uidata, len - inline_len); if (err) { err = -EFAULT; - goto out_free; + goto out_err; } } } - ename[len] = 0; - if (p9_is_proto_dotu(c)) { - /* For dotu we also have error code */ - err = p9pdu_readf(req->rc, - c->proto_version, "d", &ecode); - if (err) - goto out_free; + ename = NULL; + err = p9pdu_readf(req->rc, c->proto_version, "s?d", + &ename, &ecode); + if (err) + goto out_err; + + if (p9_is_proto_dotu(c)) err = -ecode; - } + if (!err || !IS_ERR_VALUE(err)) { err = p9_errstr2errno(ename, strlen(ename)); @@ -628,8 +611,6 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req, } return err; -out_free: - kfree(ename); out_err: p9_debug(P9_DEBUG_ERROR, "couldn't parse error%d\n", err); return err; -- cgit v0.10.2 From b3657453f16a7b84eab9b93bb9a9a2901ffc70af Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Mon, 27 May 2013 21:09:53 +0200 Subject: brcmfmac: Turn off ARP offloading when configured for AP. ARP offloading should only be used in STA or P2P client mode. It is currently configured once at init. When being configured for AP ARP offloading should be turned off and when AP mode is left it can be turned back on. Cc: stable@vger.kernel.org Reviewed-by: Arend Van Spriel Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c index be0787c..9431af2 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c @@ -27,7 +27,6 @@ #include "tracepoint.h" #define PKTFILTER_BUF_SIZE 128 -#define BRCMF_ARPOL_MODE 0xb /* agent|snoop|peer_autoreply */ #define BRCMF_DEFAULT_BCN_TIMEOUT 3 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40 @@ -338,23 +337,6 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) goto done; } - /* Try to set and enable ARP offload feature, this may fail */ - err = brcmf_fil_iovar_int_set(ifp, "arp_ol", BRCMF_ARPOL_MODE); - if (err) { - brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n", - BRCMF_ARPOL_MODE, err); - err = 0; - } else { - err = brcmf_fil_iovar_int_set(ifp, "arpoe", 1); - if (err) { - brcmf_dbg(TRACE, "failed to enable ARP offload err = %d\n", - err); - err = 0; - } else - brcmf_dbg(TRACE, "successfully enabled ARP offload to 0x%x\n", - BRCMF_ARPOL_MODE); - } - /* Setup packet filter */ brcmf_c_pktfilter_offload_set(ifp, BRCMF_DEFAULT_PACKET_FILTER); brcmf_c_pktfilter_offload_enable(ifp, BRCMF_DEFAULT_PACKET_FILTER, diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h index 0f2c83b..665ef69 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h @@ -23,6 +23,12 @@ #define BRCMF_FIL_ACTION_FRAME_SIZE 1800 +/* ARP Offload feature flags for arp_ol iovar */ +#define BRCMF_ARP_OL_AGENT 0x00000001 +#define BRCMF_ARP_OL_SNOOP 0x00000002 +#define BRCMF_ARP_OL_HOST_AUTO_REPLY 0x00000004 +#define BRCMF_ARP_OL_PEER_AUTO_REPLY 0x00000008 + enum brcmf_fil_p2p_if_types { BRCMF_FIL_P2P_IF_CLIENT, diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index 761f501..94285f6 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -459,6 +459,38 @@ send_key_to_dongle(struct net_device *ndev, struct brcmf_wsec_key *key) return err; } +static s32 +brcmf_configure_arp_offload(struct brcmf_if *ifp, bool enable) +{ + s32 err; + u32 mode; + + if (enable) + mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY; + else + mode = 0; + + /* Try to set and enable ARP offload feature, this may fail, then it */ + /* is simply not supported and err 0 will be returned */ + err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode); + if (err) { + brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n", + mode, err); + err = 0; + } else { + err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable); + if (err) { + brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n", + enable, err); + err = 0; + } else + brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n", + enable, mode); + } + + return err; +} + static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy, const char *name, enum nl80211_iftype type, @@ -3683,6 +3715,7 @@ brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev, } brcmf_set_mpc(ifp, 0); + brcmf_configure_arp_offload(ifp, false); /* find the RSN_IE */ rsn_ie = brcmf_parse_tlvs((u8 *)settings->beacon.tail, @@ -3789,8 +3822,10 @@ brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev, set_bit(BRCMF_VIF_STATUS_AP_CREATED, &ifp->vif->sme_state); exit: - if (err) + if (err) { brcmf_set_mpc(ifp, 1); + brcmf_configure_arp_offload(ifp, true); + } return err; } @@ -3831,6 +3866,7 @@ static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev) brcmf_err("bss_enable config failed %d\n", err); } brcmf_set_mpc(ifp, 1); + brcmf_configure_arp_offload(ifp, true); set_bit(BRCMF_VIF_STATUS_AP_CREATING, &ifp->vif->sme_state); clear_bit(BRCMF_VIF_STATUS_AP_CREATED, &ifp->vif->sme_state); @@ -5229,6 +5265,8 @@ static s32 brcmf_config_dongle(struct brcmf_cfg80211_info *cfg) if (err) goto default_conf_out; + brcmf_configure_arp_offload(ifp, true); + cfg->dongle_up = true; default_conf_out: -- cgit v0.10.2 From 15a953d0919e3e7c94691ecabd0d9f74373f19aa Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Mon, 27 May 2013 21:09:54 +0200 Subject: brcmfmac: Fix p2p setup when connected to ap on 5G. The firmware requires that on p2p setup when net interfaces are created or updated that they start initially with the same channel as the channel in use for the current connection (if any). If none exists take default channel 11. Reviewed-by: Arend Van Spriel Reviewed-by: Franky (Zhenhui) Lin Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c index e7a1a47..17275ce 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c @@ -47,6 +47,7 @@ #define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \ (channel == SOCIAL_CHAN_2) || \ (channel == SOCIAL_CHAN_3)) +#define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3 #define SOCIAL_CHAN_CNT 3 #define AF_PEER_SEARCH_CNT 2 @@ -2013,17 +2014,30 @@ static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p, u16 *chanspec) { struct brcmf_if *ifp; - struct brcmf_fil_chan_info_le ci; + u8 mac_addr[ETH_ALEN]; struct brcmu_chan ch; - s32 err; + struct brcmf_bss_info_le *bi; + u8 *buf; ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; - ch.chnum = 11; - - err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_CHANNEL, &ci, sizeof(ci)); - if (!err) - ch.chnum = le32_to_cpu(ci.hw_channel); + if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr, + ETH_ALEN) == 0) { + buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL); + if (buf != NULL) { + *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX); + if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO, + buf, WL_BSS_INFO_MAX) == 0) { + bi = (struct brcmf_bss_info_le *)(buf + 4); + *chanspec = le16_to_cpu(bi->chanspec); + kfree(buf); + return; + } + kfree(buf); + } + } + /* Use default channel for P2P */ + ch.chnum = BRCMF_P2P_TEMP_CHAN; ch.bw = BRCMU_CHAN_BW_20; p2p->cfg->d11inf.encchspec(&ch); *chanspec = ch.chspec; -- cgit v0.10.2 From 24e28beef939df8666a5d2784d6617cd9bb910a0 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Mon, 27 May 2013 21:09:55 +0200 Subject: brcmfmac: add additional parameter to brcmf_free_vif() Pass the struct brcmf_cfg80211_info instance instead of obtaining through vif itself using vif->wdev. This is needed as the netdev associated with this vif is already unregistered. Reviewed-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c index 17275ce..167b7af 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c @@ -1955,21 +1955,21 @@ s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg) err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1); if (err < 0) { brcmf_err("set p2p_disc error\n"); - brcmf_free_vif(p2p_vif); + brcmf_free_vif(cfg, p2p_vif); goto exit; } /* obtain bsscfg index for P2P discovery */ err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx); if (err < 0) { brcmf_err("retrieving discover bsscfg index failed\n"); - brcmf_free_vif(p2p_vif); + brcmf_free_vif(cfg, p2p_vif); goto exit; } /* Verify that firmware uses same bssidx as driver !! */ if (p2p_ifp->bssidx != bssidx) { brcmf_err("Incorrect bssidx=%d, compared to p2p_ifp->bssidx=%d\n", bssidx, p2p_ifp->bssidx); - brcmf_free_vif(p2p_vif); + brcmf_free_vif(cfg, p2p_vif); goto exit; } @@ -1997,7 +1997,7 @@ void brcmf_p2p_detach(struct brcmf_p2p_info *p2p) brcmf_p2p_cancel_remain_on_channel(vif->ifp); brcmf_p2p_deinit_discovery(p2p); /* remove discovery interface */ - brcmf_free_vif(vif); + brcmf_free_vif(p2p->cfg, vif); p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; } /* just set it all to zero */ @@ -2222,7 +2222,7 @@ static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p, return &p2p_vif->wdev; fail: - brcmf_free_vif(p2p_vif); + brcmf_free_vif(p2p->cfg, p2p_vif); return ERR_PTR(err); } @@ -2231,13 +2231,12 @@ fail: * * @vif: virtual interface object to delete. */ -static void brcmf_p2p_delete_p2pdev(struct brcmf_cfg80211_vif *vif) +static void brcmf_p2p_delete_p2pdev(struct brcmf_cfg80211_info *cfg, + struct brcmf_cfg80211_vif *vif) { - struct brcmf_p2p_info *p2p = &vif->ifp->drvr->config->p2p; - cfg80211_unregister_wdev(&vif->wdev); - p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; - brcmf_free_vif(vif); + cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; + brcmf_free_vif(cfg, vif); } /** @@ -2328,7 +2327,7 @@ struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, return &ifp->vif->wdev; fail: - brcmf_free_vif(vif); + brcmf_free_vif(cfg, vif); return ERR_PTR(err); } @@ -2364,7 +2363,7 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) break; case NL80211_IFTYPE_P2P_DEVICE: - brcmf_p2p_delete_p2pdev(vif); + brcmf_p2p_delete_p2pdev(cfg, vif); return 0; default: return -ENOTSUPP; @@ -2392,7 +2391,7 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) err = 0; } brcmf_cfg80211_arm_vif_event(cfg, NULL); - brcmf_free_vif(vif); + brcmf_free_vif(cfg, vif); p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL; return err; diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index 94285f6..f8c86b5 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -4292,20 +4292,16 @@ struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg, return vif; } -void brcmf_free_vif(struct brcmf_cfg80211_vif *vif) +void brcmf_free_vif(struct brcmf_cfg80211_info *cfg, + struct brcmf_cfg80211_vif *vif) { - struct brcmf_cfg80211_info *cfg; - struct wiphy *wiphy; - - wiphy = vif->wdev.wiphy; - cfg = wiphy_priv(wiphy); list_del(&vif->list); cfg->vif_cnt--; kfree(vif); if (!cfg->vif_cnt) { - wiphy_unregister(wiphy); - wiphy_free(wiphy); + wiphy_unregister(cfg->wiphy); + wiphy_free(cfg->wiphy); } } @@ -4888,8 +4884,7 @@ cfg80211_p2p_attach_out: wl_deinit_priv(cfg); cfg80211_attach_out: - brcmf_free_vif(vif); - wiphy_free(wiphy); + brcmf_free_vif(cfg, vif); return NULL; } @@ -4901,7 +4896,7 @@ void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg) wl_deinit_priv(cfg); brcmf_btcoex_detach(cfg); list_for_each_entry_safe(vif, tmp, &cfg->vif_list, list) { - brcmf_free_vif(vif); + brcmf_free_vif(cfg, vif); } } diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h index a71cff8..d9bdaf9 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h @@ -487,7 +487,8 @@ enum nl80211_iftype brcmf_cfg80211_get_iftype(struct brcmf_if *ifp); struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg, enum nl80211_iftype type, bool pm_block); -void brcmf_free_vif(struct brcmf_cfg80211_vif *vif); +void brcmf_free_vif(struct brcmf_cfg80211_info *cfg, + struct brcmf_cfg80211_vif *vif); s32 brcmf_vif_set_mgmt_ie(struct brcmf_cfg80211_vif *vif, s32 pktflag, const u8 *vndr_ie_buf, u32 vndr_ie_len); -- cgit v0.10.2 From 9390ace916b2fd866c1762b1cd16c276d8c8c890 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Mon, 27 May 2013 21:09:56 +0200 Subject: brcmfmac: free net device when registration fails When registration fails the net device is no longer needed. Free the net device and remove reference to private data from the driver. Reviewed-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c index 59c2546..f04e355 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -656,7 +656,9 @@ int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) return 0; fail: + drvr->iflist[ifp->bssidx] = NULL; ndev->netdev_ops = NULL; + free_netdev(ndev); return -EBADE; } @@ -720,6 +722,9 @@ static int brcmf_net_p2p_attach(struct brcmf_if *ifp) return 0; fail: + ifp->drvr->iflist[ifp->bssidx] = NULL; + ndev->netdev_ops = NULL; + free_netdev(ndev); return -EBADE; } @@ -925,8 +930,6 @@ fail: brcmf_fws_del_interface(ifp); brcmf_fws_deinit(drvr); } - free_netdev(ifp->ndev); - drvr->iflist[0] = NULL; if (p2p_ifp) { free_netdev(p2p_ifp->ndev); drvr->iflist[1] = NULL; @@ -934,7 +937,8 @@ fail: return ret; } if ((brcmf_p2p_enable) && (p2p_ifp)) - brcmf_net_p2p_attach(p2p_ifp); + if (brcmf_net_p2p_attach(p2p_ifp) < 0) + brcmf_p2p_enable = 0; return 0; } diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fweh.c b/drivers/net/wireless/brcm80211/brcmfmac/fweh.c index 5a64280..83ee53a 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/fweh.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/fweh.c @@ -202,7 +202,8 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, return; brcmf_fws_add_interface(ifp); if (!drvr->fweh.evt_handler[BRCMF_E_IF]) - err = brcmf_net_attach(ifp, false); + if (brcmf_net_attach(ifp, false) < 0) + return; } if (ifevent->action == BRCMF_E_IF_CHANGE) -- cgit v0.10.2 From cbb371da233eb2b4c200010a5372579b880b4ae6 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Mon, 27 May 2013 21:09:57 +0200 Subject: brcmfmac: use struct net_device::destructor to remove interfaces Upon deleting a P2P_CLIENT/GO interface the vif and consequently the wdev is freed before the net_device is actually being unregistered but cfg80211 still needs to access the wdev. Using destructor field to free the net_device and vif. Reviewed-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c index f04e355..b98f223 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -653,6 +653,7 @@ int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); + ndev->destructor = free_netdev; return 0; fail: @@ -793,6 +794,7 @@ void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx) struct brcmf_if *ifp; ifp = drvr->iflist[bssidx]; + drvr->iflist[bssidx] = NULL; if (!ifp) { brcmf_err("Null interface, idx=%d\n", bssidx); return; @@ -813,15 +815,13 @@ void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx) cancel_work_sync(&ifp->setmacaddr_work); cancel_work_sync(&ifp->multicast_work); } - + /* unregister will take care of freeing it */ unregister_netdev(ifp->ndev); if (bssidx == 0) brcmf_cfg80211_detach(drvr->config); - free_netdev(ifp->ndev); } else { kfree(ifp); } - drvr->iflist[bssidx] = NULL; } int brcmf_attach(uint bus_hdrlen, struct device *dev) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c index 167b7af..79555f0 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c @@ -2240,6 +2240,25 @@ static void brcmf_p2p_delete_p2pdev(struct brcmf_cfg80211_info *cfg, } /** + * brcmf_p2p_free_p2p_if() - free up net device related data. + * + * @ndev: net device that needs to be freed. + */ +static void brcmf_p2p_free_p2p_if(struct net_device *ndev) +{ + struct brcmf_cfg80211_info *cfg; + struct brcmf_cfg80211_vif *vif; + struct brcmf_if *ifp; + + ifp = netdev_priv(ndev); + cfg = ifp->drvr->config; + vif = ifp->vif; + + brcmf_free_vif(cfg, vif); + free_netdev(ifp->ndev); +} + +/** * brcmf_p2p_add_vif() - create a new P2P virtual interface. * * @wiphy: wiphy device of new interface. @@ -2316,6 +2335,9 @@ struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, brcmf_err("Registering netdevice failed\n"); goto fail; } + /* override destructor */ + ifp->ndev->destructor = brcmf_p2p_free_p2p_if; + cfg->p2p.bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = vif; /* Disable firmware roaming for P2P interface */ brcmf_fil_iovar_int_set(ifp, "roam_off", 1); @@ -2391,7 +2413,6 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) err = 0; } brcmf_cfg80211_arm_vif_event(cfg, NULL); - brcmf_free_vif(cfg, vif); p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL; return err; diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index f8c86b5..656ce87 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -4678,7 +4678,6 @@ static s32 brcmf_notify_vif_event(struct brcmf_if *ifp, return 0; case BRCMF_E_IF_DEL: - ifp->vif = NULL; mutex_unlock(&event->vif_event_lock); /* event may not be upon user request */ if (brcmf_cfg80211_vif_event_armed(cfg)) -- cgit v0.10.2 From 1c9d30cfac9901c4f7447deacdfb6b77eee1a096 Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Mon, 27 May 2013 21:09:58 +0200 Subject: brcmfmac: Add multi channel support for P2P. Multi channel support was disabled. This patch will enable it and configure the P2P GO on the correct frequency when multi channel is used. Reviewed-by: Arend Van Spriel Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index 656ce87..6a87178 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -3672,10 +3672,28 @@ brcmf_config_ap_mgmt_ie(struct brcmf_cfg80211_vif *vif, } static s32 +brcmf_cfg80211_set_channel(struct brcmf_cfg80211_info *cfg, + struct brcmf_if *ifp, + struct ieee80211_channel *channel) +{ + u16 chanspec; + s32 err; + + brcmf_dbg(TRACE, "band=%d, center_freq=%d\n", channel->band, + channel->center_freq); + + chanspec = channel_to_chanspec(&cfg->d11inf, channel); + err = brcmf_fil_iovar_int_set(ifp, "chanspec", chanspec); + + return err; +} + +static s32 brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev, struct cfg80211_ap_settings *settings) { s32 ie_offset; + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_tlv *ssid_ie; struct brcmf_ssid_le ssid_le; @@ -3746,6 +3764,12 @@ brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev, brcmf_config_ap_mgmt_ie(ifp->vif, &settings->beacon); + err = brcmf_cfg80211_set_channel(cfg, ifp, settings->chandef.chan); + if (err < 0) { + brcmf_err("Set Channel failed, %d\n", err); + goto exit; + } + if (settings->beacon_interval) { err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_BCNPRD, settings->beacon_interval); @@ -4184,7 +4208,7 @@ static const struct ieee80211_iface_limit brcmf_iface_limits[] = { static const struct ieee80211_iface_combination brcmf_iface_combos[] = { { .max_interfaces = BRCMF_IFACE_MAX_CNT, - .num_different_channels = 1, /* no multi-channel for now */ + .num_different_channels = 2, .n_limits = ARRAY_SIZE(brcmf_iface_limits), .limits = brcmf_iface_limits } -- cgit v0.10.2 From 102fd0d69eed4c778555fe957f8660dfee1568ea Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Mon, 27 May 2013 21:09:59 +0200 Subject: brcmfmac: Disable powersave mode for P2P link. For p2p client mode powersave mode should be kept disabled. It is working but inefficient. In general p2p links do no benefit from this mode, because these links are setup temporarily to transfer data. Reviewed-by: Arend Van Spriel Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index 6a87178..301e572 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -2248,6 +2248,11 @@ brcmf_cfg80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *ndev, } pm = enabled ? PM_FAST : PM_OFF; + /* Do not enable the power save after assoc if it is a p2p interface */ + if (ifp->vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) { + brcmf_dbg(INFO, "Do not enable power save for P2P clients\n"); + pm = PM_OFF; + } brcmf_dbg(INFO, "power save %s\n", (pm ? "enabled" : "disabled")); err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PM, pm); -- cgit v0.10.2 From add295a4afbdf5852d004c754c552d692b0fcac8 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Tue, 28 May 2013 14:52:19 +0200 Subject: ath9k: use correct OTP register offsets for AR9550 Accessing the OTP memory on AR9950 causes a data bus like this: Data bus error, epc == 801f7774, ra == 801f7774 Oops[#1]: CPU: 0 PID: 1 Comm: swapper Not tainted 3.10.0-rc3 #592 task: 87c28000 ti: 87c22000 task.ti: 87c22000 $ 0 : 00000000 00000061 deadc0de 00000000 $ 4 : b8115f18 00015f18 00000007 00000004 $ 8 : 00000001 7c7c3c7c 7c7c7c7c 7c7c7c7c $12 : 7c7c3c7c 80320a68 00000000 7c7c7c3c $16 : 87cd8010 00015f18 00000007 00000000 $20 : 00000064 00000004 87c23c7c 8035210c $24 : 00000000 801f3674 $28 : 87c22000 87c23b48 00000001 801f7774 Hi : 00000000 Lo : 00000064 epc : 801f7774 ath9k_hw_wait+0x58/0xb0 Not tainted ra : 801f7774 ath9k_hw_wait+0x58/0xb0 Status: 1000cc03 KERNEL EXL IE Cause : 4080801c PrId : 00019750 (MIPS 74Kc) Modules linked in: Process swapper (pid: 1, threadinfo=87c22000, task=87c28000, ts=00000000) Stack : 0000000f 00000061 00002710 8006240c 00000001 87cd8010 87c23bb0 87cd8010 00000000 00000004 00000003 80210c7c 000000b3 67fa8000 0000032a 000006fe 000003e8 00000002 00000028 87c23bf0 000003ff 80210d24 803e5630 80210e28 00000000 00000007 87cd8010 00007044 00000004 00000061 000003ff 000001ff 87c26000 87cd8010 00000220 87cd8bb8 80210000 8020fcf4 87c22000 87c23c08 ... Call Trace: [<801f7774>] ath9k_hw_wait+0x58/0xb0 [<80210c7c>] ar9300_otp_read_word+0x80/0xd4 [<80210d24>] ar9300_read_otp+0x54/0xb0 [<8020fcf4>] ar9300_check_eeprom_header+0x1c/0x40 [<80210fe4>] ath9k_hw_ar9300_fill_eeprom+0x118/0x39c [<80206650>] ath9k_hw_eeprom_init+0x74/0xb4 [<801f96d0>] ath9k_hw_init+0x7ec/0x96c [<801e65ec>] ath9k_init_device+0x340/0x758 [<801f35d0>] ath_ahb_probe+0x21c/0x2c0 [<801c041c>] driver_probe_device+0xc0/0x1e4 [<801c05ac>] __driver_attach+0x6c/0xa4 [<801bea08>] bus_for_each_dev+0x64/0xa8 [<801bfa40>] bus_add_driver+0xcc/0x24c [<801c0954>] driver_register+0xbc/0x17c [<803f8fc0>] ath9k_init+0x5c/0x88 [<800608fc>] do_one_initcall+0xec/0x1a0 [<803e6a68>] kernel_init_freeable+0x13c/0x200 [<80309cdc>] kernel_init+0x1c/0xe4 [<80062450>] ret_from_kernel_thread+0x10/0x18 On the AR9550, the OTP registers are located at the same address as on the AR9340. Use the correct values to avoid the error. Cc: stable@vger.kernel.org # 3.6+ Signed-off-by: Gabor Juhos Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h index 54ba42f..874f657 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h @@ -68,13 +68,16 @@ #define AR9300_BASE_ADDR 0x3ff #define AR9300_BASE_ADDR_512 0x1ff -#define AR9300_OTP_BASE (AR_SREV_9340(ah) ? 0x30000 : 0x14000) -#define AR9300_OTP_STATUS (AR_SREV_9340(ah) ? 0x30018 : 0x15f18) +#define AR9300_OTP_BASE \ + ((AR_SREV_9340(ah) || AR_SREV_9550(ah)) ? 0x30000 : 0x14000) +#define AR9300_OTP_STATUS \ + ((AR_SREV_9340(ah) || AR_SREV_9550(ah)) ? 0x30018 : 0x15f18) #define AR9300_OTP_STATUS_TYPE 0x7 #define AR9300_OTP_STATUS_VALID 0x4 #define AR9300_OTP_STATUS_ACCESS_BUSY 0x2 #define AR9300_OTP_STATUS_SM_BUSY 0x1 -#define AR9300_OTP_READ_DATA (AR_SREV_9340(ah) ? 0x3001c : 0x15f1c) +#define AR9300_OTP_READ_DATA \ + ((AR_SREV_9340(ah) || AR_SREV_9550(ah)) ? 0x3001c : 0x15f1c) enum targetPowerHTRates { HT_TARGET_RATE_0_8_16, -- cgit v0.10.2 From f28c42c576b293b3a1daaed8ca2775ebc2fe5398 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Fri, 24 May 2013 14:29:20 +0800 Subject: usb: dwc3: pci: PHY should be deleted later than dwc3 core If the glue layer is removed first (core layer later), it deletes the phy device first, then the core device. But at core's removal, it still uses PHY's resources, it may cause kernel's oops. It is much like the problem Paul Zimmerman reported at: http://marc.info/?l=linux-usb&m=136547502011472&w=2. Besides, it is reasonable the PHY is deleted at last as the controller is the PHY's user. Signed-off-by: Peter Chen Cc: Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 227d4a7..eba9e2b 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -196,9 +196,9 @@ static void dwc3_pci_remove(struct pci_dev *pci) { struct dwc3_pci *glue = pci_get_drvdata(pci); + platform_device_unregister(glue->dwc3); platform_device_unregister(glue->usb2_phy); platform_device_unregister(glue->usb3_phy); - platform_device_unregister(glue->dwc3); pci_set_drvdata(pci, NULL); pci_disable_device(pci); } -- cgit v0.10.2 From 022d0547aa8b00ff5035ba6207ebc2c08ea0a51f Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Fri, 24 May 2013 14:30:16 +0800 Subject: usb: dwc3: exynos: PHY should be deleted later than dwc3 core If the glue layer is removed first (core layer later), it deletes the phy device first, then the core device. But at core's removal, it still uses PHY's resources, it may cause kernel's oops. It is much like the problem Paul Zimmerman reported at: http://marc.info/?l=linux-usb&m=136547502011472&w=2. Besides, it is reasonable the PHY is deleted at last as the controller is the PHY's user. Signed-off-by: Peter Chen Cc: Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 929e7dd..8ce9d7f 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -164,9 +164,9 @@ static int dwc3_exynos_remove(struct platform_device *pdev) { struct dwc3_exynos *exynos = platform_get_drvdata(pdev); + device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child); platform_device_unregister(exynos->usb2_phy); platform_device_unregister(exynos->usb3_phy); - device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child); clk_disable_unprepare(exynos->clk); -- cgit v0.10.2 From 5bf8fae33d14cc5c3c53a926f9079f92c8b082b0 Mon Sep 17 00:00:00 2001 From: George Cherian Date: Mon, 27 May 2013 14:35:49 +0530 Subject: usb: dwc3: gadget: free trb pool only from epnum 2 we never allocate a TRB pool for physical endpoints 0 and 1 so trying to free it (a invalid TRB pool pointer) will lead us in a warning while removing dwc3.ko module. In order to fix the situation, all we have to do is skip dwc3_free_trb_pool() for physical endpoints 0 and 1 just as we while deleting endpoints from the endpoints list. Cc: stable@vger.kernel.org Signed-off-by: George Cherian Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 2b6e7e0..b5e5b35 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1706,11 +1706,19 @@ static void dwc3_gadget_free_endpoints(struct dwc3 *dwc) dep = dwc->eps[epnum]; if (!dep) continue; - - dwc3_free_trb_pool(dep); - - if (epnum != 0 && epnum != 1) + /* + * Physical endpoints 0 and 1 are special; they form the + * bi-directional USB endpoint 0. + * + * For those two physical endpoints, we don't allocate a TRB + * pool nor do we add them the endpoints list. Due to that, we + * shouldn't do these two operations otherwise we would end up + * with all sorts of bugs when removing dwc3.ko. + */ + if (epnum != 0 && epnum != 1) { + dwc3_free_trb_pool(dep); list_del(&dep->endpoint.ep_list); + } kfree(dep); } -- cgit v0.10.2 From ed74df12dc3e07a37d99aab60211496e871488a0 Mon Sep 17 00:00:00 2001 From: Virupax Sadashivpetimath Date: Wed, 24 Apr 2013 08:38:48 +0200 Subject: usb: musb: make use_sg flag URB specific Since highmem PIO URB handling was introduced in: 8e8a551 usb: musb: host: Handle highmem in PIO mode when a URB is being handled it may happen that the static use_sg flag was set by a previous URB with buffer in highmem. This leads to error in handling the present URB. Fix this by making the use_sg flag URB specific. Cc: stable # 3.7+ Acked-by: Linus Walleij Signed-off-by: Virupax Sadashivpetimath Signed-off-by: Fabio Baltieri Signed-off-by: Felipe Balbi diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 8914dec..9d3044b 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -1232,7 +1232,6 @@ void musb_host_tx(struct musb *musb, u8 epnum) void __iomem *mbase = musb->mregs; struct dma_channel *dma; bool transfer_pending = false; - static bool use_sg; musb_ep_select(mbase, epnum); tx_csr = musb_readw(epio, MUSB_TXCSR); @@ -1463,9 +1462,9 @@ done: * NULL. */ if (!urb->transfer_buffer) - use_sg = true; + qh->use_sg = true; - if (use_sg) { + if (qh->use_sg) { /* sg_miter_start is already done in musb_ep_program */ if (!sg_miter_next(&qh->sg_miter)) { dev_err(musb->controller, "error: sg list empty\n"); @@ -1484,9 +1483,9 @@ done: qh->segsize = length; - if (use_sg) { + if (qh->use_sg) { if (offset + length >= urb->transfer_buffer_length) - use_sg = false; + qh->use_sg = false; } musb_ep_select(mbase, epnum); @@ -1552,7 +1551,6 @@ void musb_host_rx(struct musb *musb, u8 epnum) bool done = false; u32 status; struct dma_channel *dma; - static bool use_sg; unsigned int sg_flags = SG_MITER_ATOMIC | SG_MITER_TO_SG; musb_ep_select(mbase, epnum); @@ -1878,12 +1876,12 @@ void musb_host_rx(struct musb *musb, u8 epnum) * NULL. */ if (!urb->transfer_buffer) { - use_sg = true; + qh->use_sg = true; sg_miter_start(&qh->sg_miter, urb->sg, 1, sg_flags); } - if (use_sg) { + if (qh->use_sg) { if (!sg_miter_next(&qh->sg_miter)) { dev_err(musb->controller, "error: sg list empty\n"); sg_miter_stop(&qh->sg_miter); @@ -1913,8 +1911,8 @@ finish: urb->actual_length += xfer_len; qh->offset += xfer_len; if (done) { - if (use_sg) - use_sg = false; + if (qh->use_sg) + qh->use_sg = false; if (urb->status == -EINPROGRESS) urb->status = status; diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h index 5a9c8fe..738f7eb 100644 --- a/drivers/usb/musb/musb_host.h +++ b/drivers/usb/musb/musb_host.h @@ -74,6 +74,7 @@ struct musb_qh { u16 frame; /* for periodic schedule */ unsigned iso_idx; /* in urb->iso_frame_desc[] */ struct sg_mapping_iter sg_miter; /* for highmem in PIO mode */ + bool use_sg; /* to track urb using sglist */ }; /* map from control or bulk queue head to the first qh on that ring */ -- cgit v0.10.2 From aa848233f740abbabfa7669daca0ab94aaa37bcd Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 3 May 2013 23:27:07 +0200 Subject: ntp: Remove unused variable flags in __hardpps MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit kernel/time/ntp.c: In function ‘__hardpps’: kernel/time/ntp.c:877: warning: unused variable ‘flags’ commit a076b2146fabb0894cae5e0189a8ba3f1502d737 ("ntp: Remove ntp_lock, using the timekeeping locks to protect ntp state") removed its users, but not the actual variable. Signed-off-by: Geert Uytterhoeven Signed-off-by: John Stultz diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 12ff13a..8f5b3b9 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -874,7 +874,6 @@ static void hardpps_update_phase(long error) void __hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts) { struct pps_normtime pts_norm, freq_norm; - unsigned long flags; pts_norm = pps_normalize_ts(*phase_ts); -- cgit v0.10.2 From 0d6bd9953f739dad96d9a0de65383e479ab4e10d Mon Sep 17 00:00:00 2001 From: Zoran Markovic Date: Fri, 17 May 2013 11:24:05 -0700 Subject: timekeeping: Correct run-time detection of persistent_clock. Since commit 31ade30692dc9680bfc95700d794818fa3f754ac, timekeeping_init() checks for presence of persistent clock by attempting to read a non-zero time value. This is an issue on platforms where persistent_clock (instead is implemented as a free-running counter (instead of an RTC) starting from zero on each boot and running during suspend. Examples are some ARM platforms (e.g. PandaBoard). An attempt to read such a clock during timekeeping_init() may return zero value and falsely declare persistent clock as missing. Additionally, in the above case suspend times may be accounted twice (once from timekeeping_resume() and once from rtc_resume()), resulting in a gradual drift of system time. This patch does a run-time correction of the issue by doing the same check during timekeeping_suspend(). A better long-term solution would have to return error when trying to read non-existing clock and zero when trying to read an uninitialized clock, but that would require changing all persistent_clock implementations. This patch addresses the immediate breakage, for now. Cc: John Stultz Cc: Thomas Gleixner Cc: Feng Tang Cc: stable@vger.kernel.org Signed-off-by: Zoran Markovic [jstultz: Tweaked commit message and subject] Signed-off-by: John Stultz diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 98cd470..baeeb5c8 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -975,6 +975,14 @@ static int timekeeping_suspend(void) read_persistent_clock(&timekeeping_suspend_time); + /* + * On some systems the persistent_clock can not be detected at + * timekeeping_init by its return value, so if we see a valid + * value returned, update the persistent_clock_exists flag. + */ + if (timekeeping_suspend_time.tv_sec || timekeeping_suspend_time.tv_nsec) + persistent_clock_exist = true; + raw_spin_lock_irqsave(&timekeeper_lock, flags); write_seqcount_begin(&timekeeper_seq); timekeeping_forward_now(tk); -- cgit v0.10.2 From cf9f123b38345b2c2777e642eb9bb561f4b7de91 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Tue, 28 May 2013 16:46:46 -0400 Subject: NVMe: Use dma_set_mask() correctly In some circumstances setting a 64-bit DMA mask can fail, as explained in Documentation/DMA-API-HOWTO.txt. Use the recommended code sequence to set a 32-bit DMA mask if setting a 64-bit DMA mask fails. Reported-by: Chayan Biswas Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 8493708..a57d3bc 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1927,8 +1927,14 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) INIT_LIST_HEAD(&dev->namespaces); dev->pci_dev = pdev; pci_set_drvdata(pdev, dev); - dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); - dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); + + if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) + dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); + else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) + dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + else + goto disable; + result = nvme_set_instance(dev); if (result) goto disable; -- cgit v0.10.2 From b161c144404c18f6a9e20e46b63828ae3c2eb093 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Fri, 24 May 2013 09:47:49 -0400 Subject: svcrpc: implement O_NONBLOCK behavior for use-gss-proxy Somebody noticed LTP was complaining about O_NONBLOCK opens of /proc/net/rpc/use-gss-proxy succeeding and then a following read hanging. I'm not convinced LTP really has any business opening random proc files and expecting them to behave a certain way. Maybe this isn't really a bug. But in any case the O_NONBLOCK behavior could be useful for someone that wants to test whether gss-proxy is up without waiting. Reported-by: Jan Stancek Signed-off-by: J. Bruce Fields diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index 2c6a1ec..29b4ba9 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -1317,10 +1317,12 @@ static inline bool gssp_ready(struct sunrpc_net *sn) return false; } -static int wait_for_gss_proxy(struct net *net) +static int wait_for_gss_proxy(struct net *net, struct file *file) { struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); + if (file->f_flags & O_NONBLOCK && !gssp_ready(sn)) + return -EAGAIN; return wait_event_interruptible(sn->gssp_wq, gssp_ready(sn)); } @@ -1362,7 +1364,7 @@ static ssize_t read_gssp(struct file *file, char __user *buf, size_t len; int ret; - ret = wait_for_gss_proxy(net); + ret = wait_for_gss_proxy(net, file); if (ret) return ret; -- cgit v0.10.2 From e9d0626ed43a41a3fc526d1df06122b0d4eac174 Mon Sep 17 00:00:00 2001 From: Zhang Yanfei Date: Tue, 14 May 2013 14:48:58 +0800 Subject: x86-64, init: Fix a possible wraparound bug in switchover in head_64.S In head_64.S, a switchover has been used to handle kernel crossing 1G, 512G boundaries. And commit 8170e6bed465b4b0c7687f93e9948aca4358a33b x86, 64bit: Use a #PF handler to materialize early mappings on demand said: During the switchover in head_64.S, before #PF handler is available, we use three pages to handle kernel crossing 1G, 512G boundaries with sharing page by playing games with page aliasing: the same page is mapped twice in the higher-level tables with appropriate wraparound. But from the switchover code, when we set up the PUD table: 114 addq $4096, %rdx 115 movq %rdi, %rax 116 shrq $PUD_SHIFT, %rax 117 andl $(PTRS_PER_PUD-1), %eax 118 movq %rdx, (4096+0)(%rbx,%rax,8) 119 movq %rdx, (4096+8)(%rbx,%rax,8) It seems line 119 has a potential bug there. For example, if the kernel is loaded at physical address 511G+1008M, that is 000000000 111111111 111111000 000000000000000000000 and the kernel _end is 512G+2M, that is 000000001 000000000 000000001 000000000000000000000 So in this example, when using the 2nd page to setup PUD (line 114~119), rax is 511. In line 118, we put rdx which is the address of the PMD page (the 3rd page) into entry 511 of the PUD table. But in line 119, the entry we calculate from (4096+8)(%rbx,%rax,8) has exceeded the PUD page. IMO, the entry in line 119 should be wraparound into entry 0 of the PUD table. The patch fixes the bug. Signed-off-by: Zhang Yanfei Link: http://lkml.kernel.org/r/5191DE5A.3020302@cn.fujitsu.com Signed-off-by: Yinghai Lu Cc: v3.9 Signed-off-by: H. Peter Anvin diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 08f7e80..321d65e 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -115,8 +115,10 @@ startup_64: movq %rdi, %rax shrq $PUD_SHIFT, %rax andl $(PTRS_PER_PUD-1), %eax - movq %rdx, (4096+0)(%rbx,%rax,8) - movq %rdx, (4096+8)(%rbx,%rax,8) + movq %rdx, 4096(%rbx,%rax,8) + incl %eax + andl $(PTRS_PER_PUD-1), %eax + movq %rdx, 4096(%rbx,%rax,8) addq $8192, %rbx movq %rdi, %rax -- cgit v0.10.2 From 2a0ff3fbe39bc93f719ff857e5a359d9780579ff Mon Sep 17 00:00:00 2001 From: Jeff Liu Date: Sun, 26 May 2013 21:33:09 +0800 Subject: cgroup: warn about mismatching options of a new mount of an existing hierarchy With the new __DEVEL__sane_behavior mount option was introduced, if the root cgroup is alive with no xattr function, to mount a new cgroup with xattr will be rejected in terms of design which just fine. However, if the root cgroup does not mounted with __DEVEL__sane_hehavior, to create a new cgroup with xattr option will succeed although after that the EA function does not works as expected but will get ENOTSUPP for setting up attributes under either cgroup. e.g. setfattr: /cgroup2/test: Operation not supported Instead of keeping silence in this case, it's better to drop a log entry in warning level. That would be helpful to understand the reason behind the scene from the user's perspective, and this is essentially an improvement does not break the backward compatibilities. With this fix, above mount attemption will keep up works as usual but the following line cound be found at the system log: [ ...] cgroup: new mount options do not match the existing superblock tj: minor formatting / message updates. Signed-off-by: Jie Liu Reported-by: Alexey Kodanev Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 31e9ef3..a7c9e6d 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1686,11 +1686,14 @@ static struct dentry *cgroup_mount(struct file_system_type *fs_type, */ cgroup_drop_root(opts.new_root); - if (((root->flags | opts.flags) & CGRP_ROOT_SANE_BEHAVIOR) && - root->flags != opts.flags) { - pr_err("cgroup: sane_behavior: new mount options should match the existing superblock\n"); - ret = -EINVAL; - goto drop_new_super; + if (root->flags != opts.flags) { + if ((root->flags | opts.flags) & CGRP_ROOT_SANE_BEHAVIOR) { + pr_err("cgroup: sane_behavior: new mount options should match the existing superblock\n"); + ret = -EINVAL; + goto drop_new_super; + } else { + pr_warning("cgroup: new mount options do not match the existing superblock, will be ignored\n"); + } } /* no subsys rebinding, so refcounts don't change */ -- cgit v0.10.2 From fcce9a35f8faaa1f52236c554ef1b15d99a7537e Mon Sep 17 00:00:00 2001 From: George Spelvin Date: Wed, 29 May 2013 10:20:35 +0900 Subject: ahci: add an observed PCI ID for Marvell 88se9172 SATA controller A third possible PCI ID, as personally observed, and found in the pci.ids list. Signed-off-by: George Spelvin Signed-off-by: Tejun Heo diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 2180876..2b50dfd 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -423,6 +423,8 @@ static const struct pci_device_id ahci_pci_tbl[] = { .driver_data = board_ahci_yes_fbs }, /* 88se9125 */ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x917a), .driver_data = board_ahci_yes_fbs }, /* 88se9172 */ + { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9172), + .driver_data = board_ahci_yes_fbs }, /* 88se9172 */ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9192), .driver_data = board_ahci_yes_fbs }, /* 88se9172 on some Gigabyte */ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a3), -- cgit v0.10.2 From fdc03438f53a00294ed9939eb3a1f6db6f3d8963 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 28 May 2013 14:03:10 -0400 Subject: USB: revert periodic scheduling bugfix This patch reverts commit 3e619d04159be54b3daa0b7036b0ce9e067f4b5d (USB: EHCI: fix bug in scheduling periodic split transfers). The commit was valid -- it fixed a real bug -- but the periodic scheduler in ehci-hcd is in such bad shape (especially the part that handles split transactions) that fixing one bug is very likely to cause another to surface. That's what happened in this case; the result was choppy and noisy playback on certain 24-bit audio devices. The only real fix will be to rewrite this entire section of code. My next project... This fixes https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1136110. Thanks to Tim Richardson for extra testing and feedback, and to Joseph Salisbury and Tyson Tan for tracking down the original source of the problem. Signed-off-by: Alan Stern CC: Joseph Salisbury CC: Tim Richardson Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index acff5b8..f3c1028 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -213,7 +213,7 @@ static inline unsigned char tt_start_uframe(struct ehci_hcd *ehci, __hc32 mask) } static const unsigned char -max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 125, 25 }; +max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 30, 0 }; /* carryover low/fullspeed bandwidth that crosses uframe boundries */ static inline void carryover_tt_bandwidth(unsigned short tt_usecs[8]) -- cgit v0.10.2 From 5f8e2c07d75967ee49a5da1d21ddf5f50d48cda0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:37 +0200 Subject: USB: serial: fix Treo/Kyocera interrrupt-in urb context The first and second interrupt-in urbs are swapped for some Treo/Kyocera devices, but the urb context was never updated with the new port. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 7573ec8..8d1a3e6 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -564,6 +564,7 @@ static int treo_attach(struct usb_serial *serial) dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\ dest->bulk_in_buffer = src->bulk_in_buffer; \ dest->interrupt_in_urb = src->interrupt_in_urb; \ + dest->interrupt_in_urb->context = dest; \ dest->interrupt_in_endpointAddress = \ src->interrupt_in_endpointAddress;\ dest->interrupt_in_buffer = src->interrupt_in_buffer; \ -- cgit v0.10.2 From 420021a395ce38b7ab2cceb52dee4038be7d8fa3 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:38 +0200 Subject: USB: visor: fix initialisation of Treo/Kyocera devices Fix regression introduced by commit 214916f2e ("USB: visor: reimplement using generic framework") which broke initialisation of Treo/Kyocera devices that re-mapped bulk-in endpoints. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 8d1a3e6..9910aa2 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -560,9 +560,17 @@ static int treo_attach(struct usb_serial *serial) */ #define COPY_PORT(dest, src) \ do { \ + int i; \ + \ + for (i = 0; i < ARRAY_SIZE(src->read_urbs); ++i) { \ + dest->read_urbs[i] = src->read_urbs[i]; \ + dest->read_urbs[i]->context = dest; \ + dest->bulk_in_buffers[i] = src->bulk_in_buffers[i]; \ + } \ dest->read_urb = src->read_urb; \ dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\ dest->bulk_in_buffer = src->bulk_in_buffer; \ + dest->bulk_in_size = src->bulk_in_size; \ dest->interrupt_in_urb = src->interrupt_in_urb; \ dest->interrupt_in_urb->context = dest; \ dest->interrupt_in_endpointAddress = \ -- cgit v0.10.2 From 72ea18a558ed7a63a50bb121ba60d73b5b38ae30 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:39 +0200 Subject: USB: mos7720: fix DMA to stack The read_mos_reg function is called with stack-allocated buffers, which must not be used for control messages. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index cc0e543..7752cff 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -227,11 +227,22 @@ static int read_mos_reg(struct usb_serial *serial, unsigned int serial_portnum, __u8 requesttype = (__u8)0xc0; __u16 index = get_reg_index(reg); __u16 value = get_reg_value(reg, serial_portnum); - int status = usb_control_msg(usbdev, pipe, request, requesttype, value, - index, data, 1, MOS_WDR_TIMEOUT); - if (status < 0) + u8 *buf; + int status; + + buf = kmalloc(1, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + status = usb_control_msg(usbdev, pipe, request, requesttype, value, + index, buf, 1, MOS_WDR_TIMEOUT); + if (status == 1) + *data = *buf; + else if (status < 0) dev_err(&usbdev->dev, "mos7720: usb_control_msg() failed: %d", status); + kfree(buf); + return status; } -- cgit v0.10.2 From 15ee89c3347fbf58a4361011eda5ac2731e45126 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:40 +0200 Subject: USB: mos7840: fix DMA to stack Fix regression introduced by commit 0eafe4de1a ("USB: serial: mos7840: add support for MCS7810 devices") which used stack-allocated buffers for control messages. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index a0d5ea5..7e99808 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -2142,13 +2142,21 @@ static int mos7840_ioctl(struct tty_struct *tty, static int mos7810_check(struct usb_serial *serial) { int i, pass_count = 0; + u8 *buf; __u16 data = 0, mcr_data = 0; __u16 test_pattern = 0x55AA; + int res; + + buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (!buf) + return 0; /* failed to identify 7810 */ /* Store MCR setting */ - usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, - &mcr_data, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + if (res == VENDOR_READ_LENGTH) + mcr_data = *buf; for (i = 0; i < 16; i++) { /* Send the 1-bit test pattern out to MCS7810 test pin */ @@ -2158,9 +2166,12 @@ static int mos7810_check(struct usb_serial *serial) MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); /* Read the test pattern back */ - usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, - VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + res = usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, + MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, + VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + if (res == VENDOR_READ_LENGTH) + data = *buf; /* If this is a MCS7810 device, both test patterns must match */ if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) @@ -2174,6 +2185,8 @@ static int mos7810_check(struct usb_serial *serial) MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); + kfree(buf); + if (pass_count == 16) return 1; @@ -2183,11 +2196,17 @@ static int mos7810_check(struct usb_serial *serial) static int mos7840_calc_num_ports(struct usb_serial *serial) { __u16 data = 0x00; + u8 *buf; int mos7840_num_ports; - usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, - VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (buf) { + usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, + VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + data = *buf; + kfree(buf); + } if (serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7810 || serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7820) { -- cgit v0.10.2 From 634371911730a462626071065b64cd6e1fe213e0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:41 +0200 Subject: USB: ark3116: fix control-message timeout The control-message timeout is specified in milliseconds and should not depend on HZ. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 3b16118..40e7fd9 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -43,7 +43,7 @@ #define DRIVER_NAME "ark3116" /* usb timeout of 1 second */ -#define ARK_TIMEOUT (1*HZ) +#define ARK_TIMEOUT 1000 static const struct usb_device_id id_table[] = { { USB_DEVICE(0x6547, 0x0232) }, -- cgit v0.10.2 From 6c13ff68a7ce01da7a51b44241a7aad8eaaedde7 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:42 +0200 Subject: USB: iuu_phoenix: fix bulk-message timeout The bulk-message timeout is specified in milliseconds and should not depend on HZ. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 9d74c27..790673e 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -287,7 +287,7 @@ static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) usb_bulk_msg(serial->dev, usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), buf, - count, &actual, HZ * 1); + count, &actual, 1000); if (status != IUU_OPERATION_OK) dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); @@ -307,7 +307,7 @@ static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) usb_bulk_msg(serial->dev, usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), buf, - count, &actual, HZ * 1); + count, &actual, 1000); if (status != IUU_OPERATION_OK) dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); -- cgit v0.10.2 From 849513a7809175420d353625b6f651d961e99d49 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:43 +0200 Subject: USB: mos7720: fix message timeouts The control and bulk-message timeouts are specified in milliseconds and should not depend on HZ. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 7752cff..6eac266 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -40,7 +40,7 @@ #define DRIVER_DESC "Moschip USB Serial Driver" /* default urb timeout */ -#define MOS_WDR_TIMEOUT (HZ * 5) +#define MOS_WDR_TIMEOUT 5000 #define MOS_MAX_PORT 0x02 #define MOS_WRITE 0x0E @@ -1938,7 +1938,7 @@ static int mos7720_startup(struct usb_serial *serial) /* setting configuration feature to one */ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); + (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5000); /* start the interrupt urb */ ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); @@ -1981,7 +1981,7 @@ static void mos7720_release(struct usb_serial *serial) /* wait for synchronous usb calls to return */ if (mos_parport->msg_pending) wait_for_completion_timeout(&mos_parport->syncmsg_compl, - MOS_WDR_TIMEOUT); + msecs_to_jiffies(MOS_WDR_TIMEOUT)); parport_remove_port(mos_parport->pp); usb_set_serial_data(serial, NULL); -- cgit v0.10.2 From 5cbfa3acdcbf19e1d29cf3479ad8200d2e644e44 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 May 2013 14:44:44 +0200 Subject: USB: zte_ev: fix control-message timeouts The control-message timeout is specified in milliseconds and should not depend on HZ. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c index 39ee737..b9a88f2 100644 --- a/drivers/usb/serial/zte_ev.c +++ b/drivers/usb/serial/zte_ev.c @@ -53,7 +53,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0001, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 2st cmd and recieve data */ @@ -65,7 +65,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 3 cmd */ @@ -84,7 +84,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 4 cmd */ @@ -95,7 +95,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 5 cmd */ @@ -107,7 +107,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 6 cmd */ @@ -126,7 +126,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); kfree(buf); @@ -178,7 +178,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0002, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 2st ctl cmd(CTL 21 22 03 00 00 00 00 00 ) */ @@ -186,7 +186,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 3st cmd and recieve data */ @@ -198,7 +198,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 4 cmd */ @@ -217,7 +217,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 5 cmd */ @@ -228,7 +228,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 6 cmd */ @@ -240,7 +240,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 7 cmd */ @@ -259,7 +259,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 8 cmd */ @@ -270,7 +270,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); kfree(buf); -- cgit v0.10.2 From 12bcbe66d7b3cc9f9f86cd02f925666eaa3c2107 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 28 May 2013 14:38:42 -0400 Subject: rcu: Add _notrace variation of rcu_dereference_raw() and hlist_for_each_entry_rcu() As rcu_dereference_raw() under RCU debug config options can add quite a bit of checks, and that tracing uses rcu_dereference_raw(), these checks happen with the function tracer. The function tracer also happens to trace these debug checks too. This added overhead can livelock the system. Add a new interface to RCU for both rcu_dereference_raw_notrace() as well as hlist_for_each_entry_rcu_notrace() as the hlist iterator uses the rcu_dereference_raw() as well, and is used a bit with the function tracer. Link: http://lkml.kernel.org/r/20130528184209.304356745@goodmis.org Acked-by: Paul E. McKenney Signed-off-by: Steven Rostedt diff --git a/include/linux/rculist.h b/include/linux/rculist.h index 8089e35..f4b1001 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -461,6 +461,26 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev, &(pos)->member)), typeof(*(pos)), member)) /** + * hlist_for_each_entry_rcu_notrace - iterate over rcu list of given type (for tracing) + * @pos: the type * to use as a loop cursor. + * @head: the head for your list. + * @member: the name of the hlist_node within the struct. + * + * This list-traversal primitive may safely run concurrently with + * the _rcu list-mutation primitives such as hlist_add_head_rcu() + * as long as the traversal is guarded by rcu_read_lock(). + * + * This is the same as hlist_for_each_entry_rcu() except that it does + * not do any RCU debugging or tracing. + */ +#define hlist_for_each_entry_rcu_notrace(pos, head, member) \ + for (pos = hlist_entry_safe (rcu_dereference_raw_notrace(hlist_first_rcu(head)),\ + typeof(*(pos)), member); \ + pos; \ + pos = hlist_entry_safe(rcu_dereference_raw_notrace(hlist_next_rcu(\ + &(pos)->member)), typeof(*(pos)), member)) + +/** * hlist_for_each_entry_rcu_bh - iterate over rcu list of given type * @pos: the type * to use as a loop cursor. * @head: the head for your list. diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 4ccd68e..ddcc782 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -640,6 +640,15 @@ static inline void rcu_preempt_sleep_check(void) #define rcu_dereference_raw(p) rcu_dereference_check(p, 1) /*@@@ needed? @@@*/ +/* + * The tracing infrastructure traces RCU (we want that), but unfortunately + * some of the RCU checks causes tracing to lock up the system. + * + * The tracing version of rcu_dereference_raw() must not call + * rcu_read_lock_held(). + */ +#define rcu_dereference_raw_notrace(p) __rcu_dereference_check((p), 1, __rcu) + /** * rcu_access_index() - fetch RCU index with no dereferencing * @p: The index to read -- cgit v0.10.2 From 1bb539ca36e21c2f4fce0865e11df384bc7b7656 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 28 May 2013 14:38:43 -0400 Subject: ftrace: Use the rcu _notrace variants for rcu_dereference_raw() and friends As rcu_dereference_raw() under RCU debug config options can add quite a bit of checks, and that tracing uses rcu_dereference_raw(), these checks happen with the function tracer. The function tracer also happens to trace these debug checks too. This added overhead can livelock the system. Have the function tracer use the new RCU _notrace equivalents that do not do the debug checks for RCU. Link: http://lkml.kernel.org/r/20130528184209.467603904@goodmis.org Acked-by: Paul E. McKenney Signed-off-by: Steven Rostedt diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index b549b0f..6c508ff 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -120,22 +120,22 @@ static void ftrace_ops_no_ops(unsigned long ip, unsigned long parent_ip); /* * Traverse the ftrace_global_list, invoking all entries. The reason that we - * can use rcu_dereference_raw() is that elements removed from this list + * can use rcu_dereference_raw_notrace() is that elements removed from this list * are simply leaked, so there is no need to interact with a grace-period - * mechanism. The rcu_dereference_raw() calls are needed to handle + * mechanism. The rcu_dereference_raw_notrace() calls are needed to handle * concurrent insertions into the ftrace_global_list. * * Silly Alpha and silly pointer-speculation compiler optimizations! */ #define do_for_each_ftrace_op(op, list) \ - op = rcu_dereference_raw(list); \ + op = rcu_dereference_raw_notrace(list); \ do /* * Optimized for just a single item in the list (as that is the normal case). */ #define while_for_each_ftrace_op(op) \ - while (likely(op = rcu_dereference_raw((op)->next)) && \ + while (likely(op = rcu_dereference_raw_notrace((op)->next)) && \ unlikely((op) != &ftrace_list_end)) static inline void ftrace_ops_init(struct ftrace_ops *ops) @@ -779,7 +779,7 @@ ftrace_find_profiled_func(struct ftrace_profile_stat *stat, unsigned long ip) if (hlist_empty(hhd)) return NULL; - hlist_for_each_entry_rcu(rec, hhd, node) { + hlist_for_each_entry_rcu_notrace(rec, hhd, node) { if (rec->ip == ip) return rec; } @@ -1165,7 +1165,7 @@ ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip) hhd = &hash->buckets[key]; - hlist_for_each_entry_rcu(entry, hhd, hlist) { + hlist_for_each_entry_rcu_notrace(entry, hhd, hlist) { if (entry->ip == ip) return entry; } @@ -1422,8 +1422,8 @@ ftrace_ops_test(struct ftrace_ops *ops, unsigned long ip) struct ftrace_hash *notrace_hash; int ret; - filter_hash = rcu_dereference_raw(ops->filter_hash); - notrace_hash = rcu_dereference_raw(ops->notrace_hash); + filter_hash = rcu_dereference_raw_notrace(ops->filter_hash); + notrace_hash = rcu_dereference_raw_notrace(ops->notrace_hash); if ((ftrace_hash_empty(filter_hash) || ftrace_lookup_ip(filter_hash, ip)) && @@ -2920,7 +2920,7 @@ static void function_trace_probe_call(unsigned long ip, unsigned long parent_ip, * on the hash. rcu_read_lock is too dangerous here. */ preempt_disable_notrace(); - hlist_for_each_entry_rcu(entry, hhd, node) { + hlist_for_each_entry_rcu_notrace(entry, hhd, node) { if (entry->ip == ip) entry->ops->func(ip, parent_ip, &entry->data); } -- cgit v0.10.2 From 1be374a0518a288147c6a7398792583200a67261 Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Wed, 22 May 2013 14:07:44 -0700 Subject: net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, trinity@vger.kernel.org, Andy Lutomirski , netdev@vger.kernel.org, "David S. Miller" Subject: [PATCH 5/5] net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg MSG_CMSG_COMPAT is (AFAIK) not intended to be part of the API -- it's a hack that steals a bit to indicate to other networking code that a compat entry was used. So don't allow it from a non-compat syscall. This prevents an oops when running this code: int main() { int s; struct sockaddr_in addr; struct msghdr *hdr; char *highpage = mmap((void*)(TASK_SIZE_MAX - 4096), 4096, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); if (highpage == MAP_FAILED) err(1, "mmap"); s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (s == -1) err(1, "socket"); addr.sin_family = AF_INET; addr.sin_port = htons(1); addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); if (connect(s, (struct sockaddr*)&addr, sizeof(addr)) != 0) err(1, "connect"); void *evil = highpage + 4096 - COMPAT_MSGHDR_SIZE; printf("Evil address is %p\n", evil); if (syscall(__NR_sendmmsg, s, evil, 1, MSG_CMSG_COMPAT) < 0) err(1, "sendmmsg"); return 0; } Cc: David S. Miller Signed-off-by: Andy Lutomirski Signed-off-by: David S. Miller diff --git a/net/socket.c b/net/socket.c index 6b94633..9ff6366 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2075,8 +2075,12 @@ SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned int, fla { int fput_needed, err; struct msghdr msg_sys; - struct socket *sock = sockfd_lookup_light(fd, &err, &fput_needed); + struct socket *sock; + + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; @@ -2149,6 +2153,8 @@ int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, SYSCALL_DEFINE4(sendmmsg, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags) { + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; return __sys_sendmmsg(fd, mmsg, vlen, flags); } @@ -2249,8 +2255,12 @@ SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, { int fput_needed, err; struct msghdr msg_sys; - struct socket *sock = sockfd_lookup_light(fd, &err, &fput_needed); + struct socket *sock; + + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; @@ -2375,6 +2385,9 @@ SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, int datagrams; struct timespec timeout_sys; + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + if (!timeout) return __sys_recvmmsg(fd, mmsg, vlen, flags, NULL); @@ -2492,15 +2505,31 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) (int __user *)a[4]); break; case SYS_SENDMSG: + if (a[2] & MSG_CMSG_COMPAT) { + err = -EINVAL; + break; + } err = sys_sendmsg(a0, (struct msghdr __user *)a1, a[2]); break; case SYS_SENDMMSG: + if (a[3] & MSG_CMSG_COMPAT) { + err = -EINVAL; + break; + } err = sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3]); break; case SYS_RECVMSG: + if (a[2] & MSG_CMSG_COMPAT) { + err = -EINVAL; + break; + } err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]); break; case SYS_RECVMMSG: + if (a[3] & MSG_CMSG_COMPAT) { + err = -EINVAL; + break; + } err = sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], (struct timespec __user *)a[4]); break; -- cgit v0.10.2 From cf6c31fc5c3de225348742c95cc6185fca20a2f2 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 29 Apr 2013 10:04:46 +1000 Subject: m68k: only use local gpio_request_one if not using GPIOLIB MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Compiling for targets that use the local gpio code (not GPIOLIB) fail to compile with: CC arch/m68k/platform/coldfire/device.o In file included from include/linux/gpio.h:45:0, from arch/m68k/platform/coldfire/device.c:15: /home/gerg/new-wave.git/linux-3.x/arch/m68k/include/asm/gpio.h:89:19: error: static declaration of ‘gpio_request_one’ follows non-static declaration include/asm-generic/gpio.h:195:12: note: previous declaration of ‘gpio_request_one’ was here Fix by conditionally using the local gpio_request_one() function based on !CONFIG_GPIOLIB. Signed-off-by: Greg Ungerer diff --git a/arch/m68k/include/asm/gpio.h b/arch/m68k/include/asm/gpio.h index 8cc8343..2f6eec1 100644 --- a/arch/m68k/include/asm/gpio.h +++ b/arch/m68k/include/asm/gpio.h @@ -86,6 +86,7 @@ static inline int gpio_cansleep(unsigned gpio) return gpio < MCFGPIO_PIN_MAX ? 0 : __gpio_cansleep(gpio); } +#ifndef CONFIG_GPIOLIB static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) { int err; @@ -105,5 +106,5 @@ static inline int gpio_request_one(unsigned gpio, unsigned long flags, const cha return err; } - +#endif /* !CONFIG_GPIOLIB */ #endif -- cgit v0.10.2 From 456db6a4d495f40777da6f1f32f62f13026f52db Mon Sep 17 00:00:00 2001 From: Federico Vaga Date: Tue, 28 May 2013 05:02:44 +0000 Subject: net/core/sock.c: add missing VSOCK string in af_family_*_key_strings The three arrays of strings: af_family_key_strings, af_family_slock_key_strings and af_family_clock_key_strings have not VSOCK's string Signed-off-by: Federico Vaga Signed-off-by: David S. Miller diff --git a/net/core/sock.c b/net/core/sock.c index 6ba327d..88868a9 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -210,7 +210,7 @@ static const char *const af_family_key_strings[AF_MAX+1] = { "sk_lock-AF_TIPC" , "sk_lock-AF_BLUETOOTH", "sk_lock-IUCV" , "sk_lock-AF_RXRPC" , "sk_lock-AF_ISDN" , "sk_lock-AF_PHONET" , "sk_lock-AF_IEEE802154", "sk_lock-AF_CAIF" , "sk_lock-AF_ALG" , - "sk_lock-AF_NFC" , "sk_lock-AF_MAX" + "sk_lock-AF_NFC" , "sk_lock-AF_VSOCK" , "sk_lock-AF_MAX" }; static const char *const af_family_slock_key_strings[AF_MAX+1] = { "slock-AF_UNSPEC", "slock-AF_UNIX" , "slock-AF_INET" , @@ -226,7 +226,7 @@ static const char *const af_family_slock_key_strings[AF_MAX+1] = { "slock-AF_TIPC" , "slock-AF_BLUETOOTH", "slock-AF_IUCV" , "slock-AF_RXRPC" , "slock-AF_ISDN" , "slock-AF_PHONET" , "slock-AF_IEEE802154", "slock-AF_CAIF" , "slock-AF_ALG" , - "slock-AF_NFC" , "slock-AF_MAX" + "slock-AF_NFC" , "slock-AF_VSOCK" ,"slock-AF_MAX" }; static const char *const af_family_clock_key_strings[AF_MAX+1] = { "clock-AF_UNSPEC", "clock-AF_UNIX" , "clock-AF_INET" , @@ -242,7 +242,7 @@ static const char *const af_family_clock_key_strings[AF_MAX+1] = { "clock-AF_TIPC" , "clock-AF_BLUETOOTH", "clock-AF_IUCV" , "clock-AF_RXRPC" , "clock-AF_ISDN" , "clock-AF_PHONET" , "clock-AF_IEEE802154", "clock-AF_CAIF" , "clock-AF_ALG" , - "clock-AF_NFC" , "clock-AF_MAX" + "clock-AF_NFC" , "clock-AF_VSOCK" , "clock-AF_MAX" }; /* -- cgit v0.10.2 From 8e6d91ae0917bf934ed86411148f79d904728d51 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Tue, 28 May 2013 18:32:11 +0000 Subject: tuntap: forbid changing mq flag for persistent device We currently allow changing the mq flag (IFF_MULTI_QUEUE) for a persistent device. This will result a mismatch between the number the queues in netdev and tuntap. This is because we only allocate a 1q netdevice when IFF_MULTI_QUEUE was not specified, so when we set the IFF_MULTI_QUEUE and try to attach more queues later, netif_set_real_num_tx_queues() may fail which result a single queue netdevice with multiple sockets attached. Solve this by disallowing changing the mq flag for persistent device. Bug was introduced by commit edfb6a148ce62e5e19354a1dcd9a34e00815c2a1 (tuntap: reduce memory using of queues). Reported-by: Sriram Narasimhan Cc: Michael S. Tsirkin Signed-off-by: Jason Wang Signed-off-by: David S. Miller diff --git a/drivers/net/tun.c b/drivers/net/tun.c index f042b03..89776c5 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1585,6 +1585,10 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr) else return -EINVAL; + if (!!(ifr->ifr_flags & IFF_MULTI_QUEUE) != + !!(tun->flags & TUN_TAP_MQ)) + return -EINVAL; + if (tun_not_capable(tun)) return -EPERM; err = security_tun_dev_open(tun->security); -- cgit v0.10.2 From e2e2f0ea1c935edcf53feb4c4c8fdb4f86d57dd9 Mon Sep 17 00:00:00 2001 From: Federico Manzan Date: Fri, 24 May 2013 18:18:48 +0200 Subject: usbfs: Increase arbitrary limit for USB 3 isopkt length Increase the current arbitrary limit for isocronous packet size to a value large enough to account for USB 3.0 super bandwidth streams, bMaxBurst (0~15 allowed, 1~16 packets) bmAttributes (bit 1:0, mult 0~2, 1~3 packets) so the size max for one USB 3 isocronous transfer is 1024 byte * 16 * 3 = 49152 byte Acked-by: Alan Stern Signed-off-by: Federico Manzan Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index caefc80..c88c4fb 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1287,9 +1287,13 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, goto error; } for (totlen = u = 0; u < uurb->number_of_packets; u++) { - /* arbitrary limit, - * sufficient for USB 2.0 high-bandwidth iso */ - if (isopkt[u].length > 8192) { + /* + * arbitrary limit need for USB 3.0 + * bMaxBurst (0~15 allowed, 1~16 packets) + * bmAttributes (bit 1:0, mult 0~2, 1~3 packets) + * sizemax: 1024 * 16 * 3 = 49152 + */ + if (isopkt[u].length > 49152) { ret = -EINVAL; goto error; } -- cgit v0.10.2 From d660164d79b67f879db35a7d61e47d3b99bc714e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michal=20Kube=C4=8Dek?= Date: Tue, 28 May 2013 22:37:03 +0000 Subject: netfilter: xt_LOG: fix mark logging for IPv6 packets In dump_ipv6_packet(), the "recurse" parameter is zero only if dumping contents of a packet embedded into an ICMPv6 error message. Therefore we want to log packet mark if recurse is non-zero, not when it is zero. Signed-off-by: Michal Kubecek Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c index 491c7d8..5ab2484 100644 --- a/net/netfilter/xt_LOG.c +++ b/net/netfilter/xt_LOG.c @@ -737,7 +737,7 @@ static void dump_ipv6_packet(struct sbuff *m, dump_sk_uid_gid(m, skb->sk); /* Max length: 16 "MARK=0xFFFFFFFF " */ - if (!recurse && skb->mark) + if (recurse && skb->mark) sb_add(m, "MARK=0x%x ", skb->mark); } -- cgit v0.10.2 From 2abb274629614bef4044a0b98ada42e977feadfd Mon Sep 17 00:00:00 2001 From: Aurelien Chartier Date: Tue, 28 May 2013 18:09:56 +0100 Subject: xenbus: delay xenbus frontend resume if xenstored is not running If the xenbus frontend is located in a domain running xenstored, the device resume is hanging because it is happening before the process resume. This patch adds extra logic to the resume code to check if we are the domain running xenstored and delay the resume if needed. Signed-off-by: Aurelien Chartier [Changes in v2: - Instead of bypassing the resume, process it in a workqueue] [Changes in v3: - Add a struct work in xenbus_device to avoid dynamic allocation - Several small code fixes] [Changes in v4: - Use a dedicated workqueue] [Changes in v5: - Move create_workqueue error handling to xenbus_frontend_dev_resume] Acked-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c index 3159a37..a7e2507 100644 --- a/drivers/xen/xenbus/xenbus_probe_frontend.c +++ b/drivers/xen/xenbus/xenbus_probe_frontend.c @@ -29,6 +29,8 @@ #include "xenbus_probe.h" +static struct workqueue_struct *xenbus_frontend_wq; + /* device// => - */ static int frontend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename) { @@ -89,9 +91,40 @@ static void backend_changed(struct xenbus_watch *watch, xenbus_otherend_changed(watch, vec, len, 1); } +static void xenbus_frontend_delayed_resume(struct work_struct *w) +{ + struct xenbus_device *xdev = container_of(w, struct xenbus_device, work); + + xenbus_dev_resume(&xdev->dev); +} + +static int xenbus_frontend_dev_resume(struct device *dev) +{ + /* + * If xenstored is running in this domain, we cannot access the backend + * state at the moment, so we need to defer xenbus_dev_resume + */ + if (xen_store_domain_type == XS_LOCAL) { + struct xenbus_device *xdev = to_xenbus_device(dev); + + if (!xenbus_frontend_wq) { + pr_err("%s: no workqueue to process delayed resume\n", + xdev->nodename); + return -EFAULT; + } + + INIT_WORK(&xdev->work, xenbus_frontend_delayed_resume); + queue_work(xenbus_frontend_wq, &xdev->work); + + return 0; + } + + return xenbus_dev_resume(dev); +} + static const struct dev_pm_ops xenbus_pm_ops = { .suspend = xenbus_dev_suspend, - .resume = xenbus_dev_resume, + .resume = xenbus_frontend_dev_resume, .freeze = xenbus_dev_suspend, .thaw = xenbus_dev_cancel, .restore = xenbus_dev_resume, @@ -440,6 +473,8 @@ static int __init xenbus_probe_frontend_init(void) register_xenstore_notifier(&xenstore_notifier); + xenbus_frontend_wq = create_workqueue("xenbus_frontend"); + return 0; } subsys_initcall(xenbus_probe_frontend_init); diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h index 0a7515c..569c07f 100644 --- a/include/xen/xenbus.h +++ b/include/xen/xenbus.h @@ -70,6 +70,7 @@ struct xenbus_device { struct device dev; enum xenbus_state state; struct completion down; + struct work_struct work; }; static inline struct xenbus_device *to_xenbus_device(struct device *dev) -- cgit v0.10.2 From 33c1174bae3ea8f420abce53cf8aded778987583 Mon Sep 17 00:00:00 2001 From: Aurelien Chartier Date: Tue, 28 May 2013 18:09:55 +0100 Subject: xenbus: save xenstore local status for later use Save the xenstore local status computed in xenbus_init. It can then be used later to check if xenstored is running in this domain. Signed-off-by: Aurelien Chartier [Changes in v4: - Change variable name to xen_store_domain_type] Reviewed-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/xen/xenbus/xenbus_comms.h b/drivers/xen/xenbus/xenbus_comms.h index c8abd3b..e74f9c1 100644 --- a/drivers/xen/xenbus/xenbus_comms.h +++ b/drivers/xen/xenbus/xenbus_comms.h @@ -45,6 +45,7 @@ int xb_wait_for_data_to_read(void); int xs_input_avail(void); extern struct xenstore_domain_interface *xen_store_interface; extern int xen_store_evtchn; +extern enum xenstore_init xen_store_domain_type; extern const struct file_operations xen_xenbus_fops; diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index 3325884..56cfaaa 100644 --- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -69,6 +69,9 @@ EXPORT_SYMBOL_GPL(xen_store_evtchn); struct xenstore_domain_interface *xen_store_interface; EXPORT_SYMBOL_GPL(xen_store_interface); +enum xenstore_init xen_store_domain_type; +EXPORT_SYMBOL_GPL(xen_store_domain_type); + static unsigned long xen_store_mfn; static BLOCKING_NOTIFIER_HEAD(xenstore_chain); @@ -719,17 +722,11 @@ static int __init xenstored_local_init(void) return err; } -enum xenstore_init { - UNKNOWN, - PV, - HVM, - LOCAL, -}; static int __init xenbus_init(void) { int err = 0; - enum xenstore_init usage = UNKNOWN; uint64_t v = 0; + xen_store_domain_type = XS_UNKNOWN; if (!xen_domain()) return -ENODEV; @@ -737,29 +734,29 @@ static int __init xenbus_init(void) xenbus_ring_ops_init(); if (xen_pv_domain()) - usage = PV; + xen_store_domain_type = XS_PV; if (xen_hvm_domain()) - usage = HVM; + xen_store_domain_type = XS_HVM; if (xen_hvm_domain() && xen_initial_domain()) - usage = LOCAL; + xen_store_domain_type = XS_LOCAL; if (xen_pv_domain() && !xen_start_info->store_evtchn) - usage = LOCAL; + xen_store_domain_type = XS_LOCAL; if (xen_pv_domain() && xen_start_info->store_evtchn) xenstored_ready = 1; - switch (usage) { - case LOCAL: + switch (xen_store_domain_type) { + case XS_LOCAL: err = xenstored_local_init(); if (err) goto out_error; xen_store_interface = mfn_to_virt(xen_store_mfn); break; - case PV: + case XS_PV: xen_store_evtchn = xen_start_info->store_evtchn; xen_store_mfn = xen_start_info->store_mfn; xen_store_interface = mfn_to_virt(xen_store_mfn); break; - case HVM: + case XS_HVM: err = hvm_get_parameter(HVM_PARAM_STORE_EVTCHN, &v); if (err) goto out_error; diff --git a/drivers/xen/xenbus/xenbus_probe.h b/drivers/xen/xenbus/xenbus_probe.h index bb4f92e..146f857 100644 --- a/drivers/xen/xenbus/xenbus_probe.h +++ b/drivers/xen/xenbus/xenbus_probe.h @@ -47,6 +47,13 @@ struct xen_bus_type { struct bus_type bus; }; +enum xenstore_init { + XS_UNKNOWN, + XS_PV, + XS_HVM, + XS_LOCAL, +}; + extern struct device_attribute xenbus_dev_attrs[]; extern int xenbus_match(struct device *_dev, struct device_driver *_drv); -- cgit v0.10.2 From 1db01b4903639fcfaec213701a494fe3fb2c490b Mon Sep 17 00:00:00 2001 From: Stefan Bader Date: Wed, 8 May 2013 16:37:35 +0200 Subject: xen: Clean up apic ipi interface Commit f447d56d36af18c5104ff29dcb1327c0c0ac3634 introduced the implementation of the PV apic ipi interface. But there were some odd things (it seems none of which cause really any issue but maybe they should be cleaned up anyway): - xen_send_IPI_mask_allbutself (and by that xen_send_IPI_allbutself) ignore the passed in vector and only use the CALL_FUNCTION_SINGLE vector. While xen_send_IPI_all and xen_send_IPI_mask use the vector. - physflat_send_IPI_allbutself is declared unnecessarily. It is never used. This patch tries to clean up those things. Signed-off-by: Stefan Bader Signed-off-by: Konrad Rzeszutek Wilk diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 8ff3799..fb44426 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -576,24 +576,22 @@ void xen_send_IPI_mask_allbutself(const struct cpumask *mask, { unsigned cpu; unsigned int this_cpu = smp_processor_id(); + int xen_vector = xen_map_vector(vector); - if (!(num_online_cpus() > 1)) + if (!(num_online_cpus() > 1) || (xen_vector < 0)) return; for_each_cpu_and(cpu, mask, cpu_online_mask) { if (this_cpu == cpu) continue; - xen_smp_send_call_function_single_ipi(cpu); + xen_send_IPI_one(cpu, xen_vector); } } void xen_send_IPI_allbutself(int vector) { - int xen_vector = xen_map_vector(vector); - - if (xen_vector >= 0) - xen_send_IPI_mask_allbutself(cpu_online_mask, xen_vector); + xen_send_IPI_mask_allbutself(cpu_online_mask, vector); } static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id) diff --git a/arch/x86/xen/smp.h b/arch/x86/xen/smp.h index 8981a76..c7c2d89 100644 --- a/arch/x86/xen/smp.h +++ b/arch/x86/xen/smp.h @@ -5,7 +5,6 @@ extern void xen_send_IPI_mask(const struct cpumask *mask, extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask, int vector); extern void xen_send_IPI_allbutself(int vector); -extern void physflat_send_IPI_allbutself(int vector); extern void xen_send_IPI_all(int vector); extern void xen_send_IPI_self(int vector); -- cgit v0.10.2 From d69c0e3975e4955dd596c162d1628ba1dbb1eb45 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 29 May 2013 13:31:15 +0100 Subject: xen-pciback: more uses of cached MSI-X capability offset Signed-off-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c index a2278ba..4e8ba38 100644 --- a/drivers/xen/xen-pciback/pci_stub.c +++ b/drivers/xen/xen-pciback/pci_stub.c @@ -106,7 +106,7 @@ static void pcistub_device_release(struct kref *kref) else pci_restore_state(dev); - if (pci_find_capability(dev, PCI_CAP_ID_MSIX)) { + if (dev->msix_cap) { struct physdev_pci_device ppdev = { .seg = pci_domain_nr(dev->bus), .bus = dev->bus->number, @@ -371,7 +371,7 @@ static int pcistub_init_device(struct pci_dev *dev) if (err) goto config_release; - if (pci_find_capability(dev, PCI_CAP_ID_MSIX)) { + if (dev->msix_cap) { struct physdev_pci_device ppdev = { .seg = pci_domain_nr(dev->bus), .bus = dev->bus->number, -- cgit v0.10.2 From 104529661b645295903c5007ae632d2dd4029254 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 16 May 2013 11:11:08 +0300 Subject: pktcdvd: silence static checker warning Static checkers complain about widening the binary "not" operations here because sectors are u64 and "(pd)->settings.size" is unsigned int. It unintentionally clears the high 32 bits of the sector. This means that the driver won't work for devices with over 2TB of space. Since this is a DVD drive, we're unlikely to reach that limit, but we may as well silence the warning. Signed-off-by: Dan Carpenter Signed-off-by: Jiri Kosina diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 3c08983..f5d0ea1 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -83,7 +83,8 @@ #define MAX_SPEED 0xffff -#define ZONE(sector, pd) (((sector) + (pd)->offset) & ~((pd)->settings.size - 1)) +#define ZONE(sector, pd) (((sector) + (pd)->offset) & \ + ~(sector_t)((pd)->settings.size - 1)) static DEFINE_MUTEX(pktcdvd_mutex); static struct pktcdvd_device *pkt_devs[MAX_WRITERS]; -- cgit v0.10.2 From afe3c3fd5392b2f0066930abc5dbd3f4b14a0f13 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Fri, 24 May 2013 17:24:34 -0400 Subject: svcrpc: fix failures to handle -1 uid's and gid's As of f025adf191924e3a75ce80e130afcd2485b53bb8 "sunrpc: Properly decode kuids and kgids in RPC_AUTH_UNIX credentials" any rpc containing a -1 (0xffff) uid or gid would fail with a badcred error. Reported symptoms were xmbc clients failing on upgrade of the NFS server; examination of the network trace showed them sending -1 as the gid. Reported-by: Julian Sikorski Tested-by: Julian Sikorski Cc: "Eric W. Biederman" Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index c3f9e1e..06bdf5a 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -810,11 +810,15 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp) goto badcred; argv->iov_base = (void*)((__be32*)argv->iov_base + slen); /* skip machname */ argv->iov_len -= slen*4; - + /* + * Note: we skip uid_valid()/gid_valid() checks here for + * backwards compatibility with clients that use -1 id's. + * Instead, -1 uid or gid is later mapped to the + * (export-specific) anonymous id by nfsd_setuser. + * Supplementary gid's will be left alone. + */ cred->cr_uid = make_kuid(&init_user_ns, svc_getnl(argv)); /* uid */ cred->cr_gid = make_kgid(&init_user_ns, svc_getnl(argv)); /* gid */ - if (!uid_valid(cred->cr_uid) || !gid_valid(cred->cr_gid)) - goto badcred; slen = svc_getnl(argv); /* gids length */ if (slen > 16 || (len -= (slen + 2)*4) < 0) goto badcred; @@ -823,8 +827,6 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp) return SVC_CLOSE; for (i = 0; i < slen; i++) { kgid_t kgid = make_kgid(&init_user_ns, svc_getnl(argv)); - if (!gid_valid(kgid)) - goto badcred; GROUP_AT(cred->cr_group_info, i) = kgid; } if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) { -- cgit v0.10.2 From 27b0705c68dab67a6c8ffa19869aeca3eaf75d78 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Tue, 21 May 2013 17:14:18 +0200 Subject: drm/radeon: UVD block on SUMO2 is the same as on SUMO MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The chip id for SUMO2 isn't used. fixes: https://bugs.freedesktop.org/show_bug.cgi?id=63935 Tested-By: Dave Witbrodt Signed-off-by: Christian König Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index 83f612a..3fc2985 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -862,10 +862,8 @@ int rv770_uvd_resume(struct radeon_device *rdev) chip_id = 0x0100000b; break; case CHIP_SUMO: - chip_id = 0x0100000c; - break; case CHIP_SUMO2: - chip_id = 0x0100000d; + chip_id = 0x0100000c; break; case CHIP_PALM: chip_id = 0x0100000e; -- cgit v0.10.2 From 468ef1a58c9268ac9709350bf95eaf1c22a69f29 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 21 May 2013 13:35:19 -0400 Subject: drm/radeon: fix typo in cu_per_sh on verde Should be 5 rather than 2. Noticed by sroland and glisse on IRC. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 5ffade6..d1ba9d8 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2616,7 +2616,7 @@ static void si_gpu_init(struct radeon_device *rdev) default: rdev->config.si.max_shader_engines = 1; rdev->config.si.max_tile_pipes = 4; - rdev->config.si.max_cu_per_sh = 2; + rdev->config.si.max_cu_per_sh = 5; rdev->config.si.max_sh_per_se = 2; rdev->config.si.max_backends_per_se = 4; rdev->config.si.max_texture_channel_caches = 4; -- cgit v0.10.2 From 09fb8bd1a63b0f9f15e655c4fe8d047e5d2bf67a Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 22 May 2013 11:22:51 -0400 Subject: drm/radeon: fix card_posted check for newer asics MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Newer asics have variable numbers of crtcs. Use that rather than the asic family to determine which crtcs to check. This avoids checking non-existent crtcs or missing crtcs on certain asics. Reviewed-by: Michel Dänzer Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index c2c59fb..89cc816 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -472,18 +472,17 @@ bool radeon_card_posted(struct radeon_device *rdev) return false; /* first check CRTCs */ - if (ASIC_IS_DCE41(rdev)) { + if (ASIC_IS_DCE4(rdev)) { reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) | RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET); - if (reg & EVERGREEN_CRTC_MASTER_EN) - return true; - } else if (ASIC_IS_DCE4(rdev)) { - reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) | - RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) | - RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) | - RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) | - RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) | - RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET); + if (rdev->num_crtc >= 4) { + reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) | + RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET); + } + if (rdev->num_crtc >= 6) { + reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) | + RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET); + } if (reg & EVERGREEN_CRTC_MASTER_EN) return true; } else if (ASIC_IS_AVIVO(rdev)) { -- cgit v0.10.2 From 2cf3a4fcc64e5b54a8a3cd793c6c0024b5d8da6c Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 22 May 2013 11:30:34 -0400 Subject: drm/radeon: don't check crtcs in card_posted() on cards without DCE Skip checking crtcs in hardware without them. Avoids checking non-existent hardware. Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 89cc816..af82c9b 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -471,6 +471,9 @@ bool radeon_card_posted(struct radeon_device *rdev) rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) return false; + if (ASIC_IS_NODCE(rdev)) + goto check_memsize; + /* first check CRTCs */ if (ASIC_IS_DCE4(rdev)) { reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) | @@ -499,6 +502,7 @@ bool radeon_card_posted(struct radeon_device *rdev) } } +check_memsize: /* then check MEM_SIZE, in case the crtcs are off */ if (rdev->family >= CHIP_R600) reg = RREG32(R600_CONFIG_MEMSIZE); -- cgit v0.10.2 From a70b9641e6a90d6821e4354a2c2fede74015db29 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 29 May 2013 13:33:51 +0100 Subject: ipvs: ip_vs_sh: fix build kfree_rcu() requires offsetof(..., rcu_head) < 4096, which can get violated with a sufficiently high CONFIG_IP_VS_SH_TAB_BITS. Signed-off-by: Jan Beulich Signed-off-by: Simon Horman Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/ipvs/ip_vs_sh.c b/net/netfilter/ipvs/ip_vs_sh.c index 0df269d..a65edfe4 100644 --- a/net/netfilter/ipvs/ip_vs_sh.c +++ b/net/netfilter/ipvs/ip_vs_sh.c @@ -67,8 +67,8 @@ struct ip_vs_sh_bucket { #define IP_VS_SH_TAB_MASK (IP_VS_SH_TAB_SIZE - 1) struct ip_vs_sh_state { - struct ip_vs_sh_bucket buckets[IP_VS_SH_TAB_SIZE]; struct rcu_head rcu_head; + struct ip_vs_sh_bucket buckets[IP_VS_SH_TAB_SIZE]; }; /* -- cgit v0.10.2 From 50a583f64bfe53aae4996965c1d1b25d90ce4f64 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 22 May 2013 13:29:33 -0400 Subject: drm/radeon: narrow scope of Apple re-POST hack This narrows the scope of the apple re-POST hack added in: drm/radeon: re-POST the asic on Apple hardware when booted via EFI That patch prevents UVD from working on macs when booted in EFI mode. The original patch fixed macbook2,1 systems which were r5xx and hence have no UVD. Limit the hack to those systems to prevent UVD breakage on newer systems. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=63935 Cc: Matthew Garrett Signed-off-by: Alex Deucher Acked-by: Matthew Garrett diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index af82c9b..1899738 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -467,8 +467,10 @@ bool radeon_card_posted(struct radeon_device *rdev) { uint32_t reg; + /* required for EFI mode on macbook2,1 which uses an r5xx asic */ if (efi_enabled(EFI_BOOT) && - rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) + (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) && + (rdev->family < CHIP_R600)) return false; if (ASIC_IS_NODCE(rdev)) -- cgit v0.10.2 From 7e0e41963740525af702bb23edede8ae9afc4ac0 Mon Sep 17 00:00:00 2001 From: Kleber Sacilotto de Souza Date: Fri, 3 May 2013 19:43:13 -0300 Subject: radeon: use max_bus_speed to activate gen2 speeds radeon currently uses a drm function to get the speed capabilities for the bus, drm_pcie_get_speed_cap_mask. However, this is a non-standard method of performing this detection and this patch changes it to use the max_bus_speed attribute. From: Lucas Kannebley Tavares Signed-off-by: Kleber Sacilotto de Souza Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 8f9e2d3..8546e3b 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -4999,8 +4999,7 @@ void evergreen_fini(struct radeon_device *rdev) void evergreen_pcie_gen2_enable(struct radeon_device *rdev) { - u32 link_width_cntl, speed_cntl, mask; - int ret; + u32 link_width_cntl, speed_cntl; if (radeon_pcie_gen2 == 0) return; @@ -5015,11 +5014,8 @@ void evergreen_pcie_gen2_enable(struct radeon_device *rdev) if (ASIC_IS_X2(rdev)) return; - ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask); - if (ret != 0) - return; - - if (!(mask & DRM_PCIE_SPEED_50)) + if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) && + (rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT)) return; speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 1a08008..b45e648 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -4631,8 +4631,6 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev) { u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp; u16 link_cntl2; - u32 mask; - int ret; if (radeon_pcie_gen2 == 0) return; @@ -4651,11 +4649,8 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev) if (rdev->family <= CHIP_R600) return; - ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask); - if (ret != 0) - return; - - if (!(mask & DRM_PCIE_SPEED_50)) + if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) && + (rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT)) return; speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index 3fc2985..08aef24 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -2111,8 +2111,6 @@ static void rv770_pcie_gen2_enable(struct radeon_device *rdev) { u32 link_width_cntl, lanes, speed_cntl, tmp; u16 link_cntl2; - u32 mask; - int ret; if (radeon_pcie_gen2 == 0) return; @@ -2127,11 +2125,8 @@ static void rv770_pcie_gen2_enable(struct radeon_device *rdev) if (ASIC_IS_X2(rdev)) return; - ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask); - if (ret != 0) - return; - - if (!(mask & DRM_PCIE_SPEED_50)) + if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) && + (rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT)) return; DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n"); -- cgit v0.10.2 From 8ac60a6866e58b861f2a15689c6513faf1602a3d Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Wed, 29 May 2013 20:01:19 +0200 Subject: ASoC: cs42l52: use correct PCM mixer TLV dB scale to match datasheet. Signed-off-by: Nicolas Schichan Acked-by: Brian Austin Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c index 030f53c..756c204 100644 --- a/sound/soc/codecs/cs42l52.c +++ b/sound/soc/codecs/cs42l52.c @@ -193,6 +193,8 @@ static DECLARE_TLV_DB_SCALE(mic_tlv, 1600, 100, 0); static DECLARE_TLV_DB_SCALE(pga_tlv, -600, 50, 0); +static DECLARE_TLV_DB_SCALE(mix_tlv, -50, 50, 0); + static const unsigned int limiter_tlv[] = { TLV_DB_RANGE_HEAD(2), 0, 2, TLV_DB_SCALE_ITEM(-3000, 600, 0), @@ -441,7 +443,7 @@ static const struct snd_kcontrol_new cs42l52_snd_controls[] = { SOC_DOUBLE_R_SX_TLV("PCM Mixer Volume", CS42L52_PCMA_MIXER_VOL, CS42L52_PCMB_MIXER_VOL, - 0, 0x7f, 0x19, hl_tlv), + 0, 0x7f, 0x19, mix_tlv), SOC_DOUBLE_R("PCM Mixer Switch", CS42L52_PCMA_MIXER_VOL, CS42L52_PCMB_MIXER_VOL, 7, 1, 1), -- cgit v0.10.2 From 7d8acf2cba81d7c64842b5dac0d7b3dae16f0378 Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Wed, 29 May 2013 20:01:20 +0200 Subject: ASoC: cs42l52: fix hp_gain_enum shift value. Signed-off-by: Nicolas Schichan Acked-by: Brian Austin Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c index 756c204..987f728 100644 --- a/sound/soc/codecs/cs42l52.c +++ b/sound/soc/codecs/cs42l52.c @@ -262,7 +262,7 @@ static const char * const hp_gain_num_text[] = { }; static const struct soc_enum hp_gain_enum = - SOC_ENUM_SINGLE(CS42L52_PB_CTL1, 4, + SOC_ENUM_SINGLE(CS42L52_PB_CTL1, 5, ARRAY_SIZE(hp_gain_num_text), hp_gain_num_text); static const char * const beep_pitch_text[] = { -- cgit v0.10.2 From dd4704480372fdbf3e8f7826274a883c4c7c335a Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 8 May 2013 14:29:03 +0100 Subject: clk: ux500: Provide device enumeration number suffix for SMSC911x First Ethernet device has a ".0" appended onto the device name. It appears that we need this in order to obtain the correct clock. Without this fix Ethernet does not function on Ux500 devices, which is a regression. Cc: Ulf Hansson Signed-off-by: Lee Jones Signed-off-by: Mike Turquette [mturquette@linaro.org: improved changelog] diff --git a/drivers/clk/ux500/u8500_clk.c b/drivers/clk/ux500/u8500_clk.c index 0b4f35a..80069c3 100644 --- a/drivers/clk/ux500/u8500_clk.c +++ b/drivers/clk/ux500/u8500_clk.c @@ -325,7 +325,7 @@ void u8500_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base, clk = clk_reg_prcc_pclk("p3_pclk0", "per3clk", clkrst3_base, BIT(0), 0); clk_register_clkdev(clk, "fsmc", NULL); - clk_register_clkdev(clk, NULL, "smsc911x"); + clk_register_clkdev(clk, NULL, "smsc911x.0"); clk = clk_reg_prcc_pclk("p3_pclk1", "per3clk", clkrst3_base, BIT(1), 0); -- cgit v0.10.2 From f586938ba2cf83ed4cbebe96436220d182a7808e Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Tue, 30 Apr 2013 14:45:06 +0200 Subject: clk: ux500: clk-sysctrl: handle clocks with no parents Fix clk_reg_sysctrl() to set main clock registers of new struct clk_sysctrl even if the registered clock has no parents. This fixes an issue where "ulpclk" was registered with all clk->reg_* fields uninitialized, causing a -EINVAL error from clk_prepare(). Signed-off-by: Fabio Baltieri Acked-by: Ulf Hansson Signed-off-by: Mike Turquette diff --git a/drivers/clk/ux500/clk-sysctrl.c b/drivers/clk/ux500/clk-sysctrl.c index bc7e9bd..e364c9d 100644 --- a/drivers/clk/ux500/clk-sysctrl.c +++ b/drivers/clk/ux500/clk-sysctrl.c @@ -145,7 +145,13 @@ static struct clk *clk_reg_sysctrl(struct device *dev, return ERR_PTR(-ENOMEM); } - for (i = 0; i < num_parents; i++) { + /* set main clock registers */ + clk->reg_sel[0] = reg_sel[0]; + clk->reg_bits[0] = reg_bits[0]; + clk->reg_mask[0] = reg_mask[0]; + + /* handle clocks with more than one parent */ + for (i = 1; i < num_parents; i++) { clk->reg_sel[i] = reg_sel[i]; clk->reg_bits[i] = reg_bits[i]; clk->reg_mask[i] = reg_mask[i]; -- cgit v0.10.2 From 056f3d58db6f7d19be7dbc2aab8d049f28e20d6e Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 10 May 2013 18:38:09 +0200 Subject: clk: samsung: Add CLK_IGNORE_UNUSED flag for the sysreg clocks Currently no driver *) handles the sysreg clock, with an assumption that this clock is always left in its default state (enabled). Before commit 6e6aac7590f902d14d90bace3fd499 ARM: EXYNOS: Migrate clock support to common clock framework the sysreg clock was not even defined and hence wasn't handled explicitly in the kernel. To restore the previous behaviour disable masking the sysreg clock off in the clock core by default. *) Except the Exynos4x12 FIMC-IS driver, which will be modified to not touch the sysreg clock. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mike Turquette diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c index d0940e6..3c1f888 100644 --- a/drivers/clk/samsung/clk-exynos4.c +++ b/drivers/clk/samsung/clk-exynos4.c @@ -791,7 +791,8 @@ struct samsung_gate_clock exynos4210_gate_clks[] __initdata = { GATE(smmu_pcie, "smmu_pcie", "aclk133", GATE_IP_FSYS, 18, 0, 0), GATE(modemif, "modemif", "aclk100", GATE_IP_PERIL, 28, 0, 0), GATE(chipid, "chipid", "aclk100", E4210_GATE_IP_PERIR, 0, 0, 0), - GATE(sysreg, "sysreg", "aclk100", E4210_GATE_IP_PERIR, 0, 0, 0), + GATE(sysreg, "sysreg", "aclk100", E4210_GATE_IP_PERIR, 0, + CLK_IGNORE_UNUSED, 0), GATE(hdmi_cec, "hdmi_cec", "aclk100", E4210_GATE_IP_PERIR, 11, 0, 0), GATE(smmu_rotator, "smmu_rotator", "aclk200", E4210_GATE_IP_IMAGE, 4, 0, 0), @@ -819,7 +820,8 @@ struct samsung_gate_clock exynos4x12_gate_clks[] __initdata = { GATE(smmu_mdma, "smmu_mdma", "aclk200", E4X12_GATE_IP_IMAGE, 5, 0, 0), GATE(mipi_hsi, "mipi_hsi", "aclk133", GATE_IP_FSYS, 10, 0, 0), GATE(chipid, "chipid", "aclk100", E4X12_GATE_IP_PERIR, 0, 0, 0), - GATE(sysreg, "sysreg", "aclk100", E4X12_GATE_IP_PERIR, 1, 0, 0), + GATE(sysreg, "sysreg", "aclk100", E4X12_GATE_IP_PERIR, 1, + CLK_IGNORE_UNUSED, 0), GATE(hdmi_cec, "hdmi_cec", "aclk100", E4X12_GATE_IP_PERIR, 11, 0, 0), GATE(sclk_mdnie0, "sclk_mdnie0", "div_mdnie0", SRC_MASK_LCD0, 4, CLK_SET_RATE_PARENT, 0), -- cgit v0.10.2 From 8d0b8801c9e4c2c6b20cdac74dbab16facce7653 Mon Sep 17 00:00:00 2001 From: Wei Liu Date: Wed, 29 May 2013 17:02:58 +0100 Subject: xenbus_client.c: correct exit path for xenbus_map_ring_valloc_hvm Apparently we should not free page that has not been allocated. This is b/c alloc_xenballooned_pages will take care of freeing the page on its own. Signed-off-by: Wei Liu Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c index 61786be..ec097d6 100644 --- a/drivers/xen/xenbus/xenbus_client.c +++ b/drivers/xen/xenbus/xenbus_client.c @@ -534,7 +534,7 @@ static int xenbus_map_ring_valloc_hvm(struct xenbus_device *dev, err = xenbus_map_ring(dev, gnt_ref, &node->handle, addr); if (err) - goto out_err; + goto out_err_free_ballooned_pages; spin_lock(&xenbus_valloc_lock); list_add(&node->next, &xenbus_valloc_pages); @@ -543,8 +543,9 @@ static int xenbus_map_ring_valloc_hvm(struct xenbus_device *dev, *vaddr = addr; return 0; - out_err: + out_err_free_ballooned_pages: free_xenballooned_pages(1, &node->page); + out_err: kfree(node); return err; } -- cgit v0.10.2 From 0184d50f9fd17658c232d6ee6d465a87f989d706 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Wed, 29 May 2013 15:56:49 -0400 Subject: tracing: Fix bad parameter passed in branch selftest The branch selftest calls trace_test_buffer(), but with the new code it expects the first parameter to be a pointer to a struct trace_buffer. All self tests were changed but the branch selftest was missed. This caused either a crash or failed test when the branch selftest was enabled. Link: http://lkml.kernel.org/r/20130529141333.GA24064@localhost Reported-by: Fengguang Wu Signed-off-by: Steven Rostedt diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c index 55e2cf6..2901e3b 100644 --- a/kernel/trace/trace_selftest.c +++ b/kernel/trace/trace_selftest.c @@ -1159,7 +1159,7 @@ trace_selftest_startup_branch(struct tracer *trace, struct trace_array *tr) /* stop the tracing. */ tracing_stop(); /* check the trace buffer */ - ret = trace_test_buffer(tr, &count); + ret = trace_test_buffer(&tr->trace_buffer, &count); trace->reset(tr); tracing_start(); -- cgit v0.10.2 From f448badd34700ae728a32ba024249626d49c10e1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 29 May 2013 15:36:40 -0400 Subject: NFSv4: Fix a thinko in nfs4_try_open_cached We need to pass the full open mode flags to nfs_may_open() when doing a delegated open. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 4e2fe71..d7ba561 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1078,7 +1078,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) struct nfs4_state *state = opendata->state; struct nfs_inode *nfsi = NFS_I(state->inode); struct nfs_delegation *delegation; - int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); + int open_mode = opendata->o_arg.open_flags; fmode_t fmode = opendata->o_arg.fmode; nfs4_stateid stateid; int ret = -EAGAIN; -- cgit v0.10.2 From 67e1e2268e598861dc771e3c976daf07db380638 Mon Sep 17 00:00:00 2001 From: Marek Belisko Date: Fri, 3 May 2013 07:53:22 +0200 Subject: clk: si5351: Fix clkout rate computation. Rate was incorrectly computed because we read from wrong divider register. Signed-off-by: Marek Belisko Acked-by: Sebastian Hesselbarth Signed-off-by: Mike Turquette Cc: stable@kernel.org diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c index 8927284..cf39e53 100644 --- a/drivers/clk/clk-si5351.c +++ b/drivers/clk/clk-si5351.c @@ -932,7 +932,7 @@ static unsigned long si5351_clkout_recalc_rate(struct clk_hw *hw, unsigned char reg; unsigned char rdiv; - if (hwdata->num > 5) + if (hwdata->num <= 5) reg = si5351_msynth_params_address(hwdata->num) + 2; else reg = SI5351_CLK6_7_OUTPUT_DIVIDER; -- cgit v0.10.2 From 6532cb71fb31436b8d31818a056f45b8f95dfb31 Mon Sep 17 00:00:00 2001 From: Marek Belisko Date: Fri, 3 May 2013 07:53:23 +0200 Subject: clk: si5351: Set initial clkout rate when defined in platform data. clock-frequency property from platform data was read but never used. Apply defined rate when clock is registered. Signed-off-by: Marek Belisko Acked-by: Sebastian Hesselbarth Signed-off-by: Mike Turquette [mturquette@linaro.org: add missing changelog] Cc: stable@kernel.org Signed-off-by: Mike Turquette diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c index cf39e53..24f5536 100644 --- a/drivers/clk/clk-si5351.c +++ b/drivers/clk/clk-si5351.c @@ -1477,6 +1477,16 @@ static int si5351_i2c_probe(struct i2c_client *client, return -EINVAL; } drvdata->onecell.clks[n] = clk; + + /* set initial clkout rate */ + if (pdata->clkout[n].rate != 0) { + int ret; + ret = clk_set_rate(clk, pdata->clkout[n].rate); + if (ret != 0) { + dev_err(&client->dev, "Cannot set rate : %d\n", + ret); + } + } } ret = of_clk_add_provider(client->dev.of_node, of_clk_src_onecell_get, -- cgit v0.10.2 From 063f4661fde8c03c4c03f8a205071a52691c152e Mon Sep 17 00:00:00 2001 From: Dirk Gouders Date: Sun, 19 May 2013 21:48:44 +0200 Subject: mconf: handle keys in empty dialogs When entering an empty dialog, using the movement keys resulted in unexpected characters beeing displayed, other keys like "z" and "h" did not work as expected. This patch handles the movement keys as well as other keys, especially "z", "h" and "/". Signed-off-by: Dirk Gouders [yann.morin.1998@free.fr: keep lines <80 chars, so reorder test] Tested-by: "Yann E. MORIN" Reviewed-by: "Yann E. MORIN" Signed-off-by: "Yann E. MORIN" diff --git a/scripts/kconfig/lxdialog/menubox.c b/scripts/kconfig/lxdialog/menubox.c index 48d382e..38cd69c 100644 --- a/scripts/kconfig/lxdialog/menubox.c +++ b/scripts/kconfig/lxdialog/menubox.c @@ -303,10 +303,11 @@ do_resize: } } - if (i < max_choice || - key == KEY_UP || key == KEY_DOWN || - key == '-' || key == '+' || - key == KEY_PPAGE || key == KEY_NPAGE) { + if (item_count() != 0 && + (i < max_choice || + key == KEY_UP || key == KEY_DOWN || + key == '-' || key == '+' || + key == KEY_PPAGE || key == KEY_NPAGE)) { /* Remove highligt of current item */ print_item(scroll + choice, choice, FALSE); diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c index 387dc8d..a69cbd7 100644 --- a/scripts/kconfig/mconf.c +++ b/scripts/kconfig/mconf.c @@ -670,11 +670,12 @@ static void conf(struct menu *menu, struct menu *active_menu) active_menu, &s_scroll); if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL) break; - if (!item_activate_selected()) - continue; - if (!item_tag()) - continue; - + if (item_count() != 0) { + if (!item_activate_selected()) + continue; + if (!item_tag()) + continue; + } submenu = item_data(); active_menu = item_data(); if (submenu) -- cgit v0.10.2 From e983b7b17ad1a978e954e6aaa62cf12bfc747883 Mon Sep 17 00:00:00 2001 From: Dirk Gouders Date: Tue, 21 May 2013 10:54:11 +0200 Subject: kconfig/menu.c: fix multiple references to expressions in menu_add_prop() menu_add_prop() applies upper menus' visibilities to actual prompts by AND-ing the prompts visibilities with the upper menus ones. This creates a further reference to the menu's visibilities and when the expression reduction functions do their work, they may remove or modify expressions that have multiple references, thus causing unpredictable side-effects. The following example Kconfig constructs a case where this causes problems: a menu and a prompt which's visibilities depend on the same symbol. When invoking mconf with this Kconfig and pressing "Z" we see a problem caused by a free'd expression still referenced by the menu's visibility: ------------------------------------------------------------------------ mainmenu "Kconfig Testing Configuration" config VISIBLE def_bool n config Placeholder bool "Place holder" menu "Invisible" visible if VISIBLE config TEST_VAR bool "Test option" if VISIBLE endmenu ------------------------------------------------------------------------ This patch fixes this problem by creating copies of the menu's visibility expressions before AND-ing them with the prompt's one. Signed-off-by: Dirk Gouders [yann.morin.1998@free.fr: move variable into its block-scope, keep lines <80 chars, typo] Tested-by: "Yann E. MORIN" Reviewed-by: "Yann E. MORIN" Signed-off-by: "Yann E. MORIN" diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c index b5c7d90..fd3f018 100644 --- a/scripts/kconfig/menu.c +++ b/scripts/kconfig/menu.c @@ -146,11 +146,24 @@ struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *e struct menu *menu = current_entry; while ((menu = menu->parent) != NULL) { + struct expr *dup_expr; + if (!menu->visibility) continue; + /* + * Do not add a reference to the + * menu's visibility expression but + * use a copy of it. Otherwise the + * expression reduction functions + * will modify expressions that have + * multiple references which can + * cause unwanted side effects. + */ + dup_expr = expr_copy(menu->visibility); + prop->visible.expr = expr_alloc_and(prop->visible.expr, - menu->visibility); + dup_expr); } } -- cgit v0.10.2 From 419e321df8d7d605f21f980903befc65ee66e848 Mon Sep 17 00:00:00 2001 From: Tony Prisk Date: Sat, 18 May 2013 09:18:49 +1200 Subject: clk: vt8500: Fix unbalanced spinlock in vt8500_dclk_set_rate() With the addition of a DVO clock, a bug is now evident in the vt8500 clock code: [ 0.290000] WARNING: at init/main.c:698 do_one_initcall+0x158/0x18c() [ 0.300000] initcall wm8505fb_driver_init+0x0/0xc returned with disabled int This is caused by an unbalanced spinlock in vt8500_dclk_set_rate(). Replace the second call to spin_lock_irqsave() with spin_unlock_irqrestore(). Signed-off-by: Tony Prisk Signed-off-by: Mike Turquette diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c index debf688..553ac35 100644 --- a/drivers/clk/clk-vt8500.c +++ b/drivers/clk/clk-vt8500.c @@ -183,7 +183,7 @@ static int vt8500_dclk_set_rate(struct clk_hw *hw, unsigned long rate, writel(divisor, cdev->div_reg); vt8500_pmc_wait_busy(); - spin_lock_irqsave(cdev->lock, flags); + spin_unlock_irqrestore(cdev->lock, flags); return 0; } -- cgit v0.10.2 From 9b31a328e344e62e7cc98ae574edcb7b674719bb Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 15 May 2013 00:52:44 -0700 Subject: target: Re-instate sess_wait_list for target_wait_for_sess_cmds Switch back to pre commit 1c7b13fe652 list splicing logic for active I/O shutdown with tcm_qla2xxx + ib_srpt fabrics. The original commit was done under the incorrect assumption that it's safe to walk se_sess->sess_cmd_list unprotected in target_wait_for_sess_cmds() after sess->sess_tearing_down = 1 has been set by target_sess_cmd_list_set_waiting() during session shutdown. So instead of adding sess->sess_cmd_lock protection around sess->sess_cmd_list during target_wait_for_sess_cmds(), switch back to sess->sess_wait_list to allow wait_for_completion() + TFO->release_cmd() to occur without having to walk ->sess_cmd_list after the list_splice. Also add a check to exit if target_sess_cmd_list_set_waiting() has already been called, and add a WARN_ON to check for any fabric bug where new se_cmds are added to sess->sess_cmd_list after sess->sess_tearing_down = 1 has already been set. Cc: Joern Engel Cc: Roland Dreier Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 311c113..bbca144 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -221,6 +221,7 @@ struct se_session *transport_init_session(void) INIT_LIST_HEAD(&se_sess->sess_list); INIT_LIST_HEAD(&se_sess->sess_acl_list); INIT_LIST_HEAD(&se_sess->sess_cmd_list); + INIT_LIST_HEAD(&se_sess->sess_wait_list); spin_lock_init(&se_sess->sess_cmd_lock); kref_init(&se_sess->sess_kref); @@ -2250,11 +2251,14 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess) unsigned long flags; spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); - - WARN_ON(se_sess->sess_tearing_down); + if (se_sess->sess_tearing_down) { + spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); + return; + } se_sess->sess_tearing_down = 1; + list_splice_init(&se_sess->sess_cmd_list, &se_sess->sess_wait_list); - list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) + list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list) se_cmd->cmd_wait_set = 1; spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); @@ -2267,9 +2271,10 @@ EXPORT_SYMBOL(target_sess_cmd_list_set_waiting); void target_wait_for_sess_cmds(struct se_session *se_sess) { struct se_cmd *se_cmd, *tmp_cmd; + unsigned long flags; list_for_each_entry_safe(se_cmd, tmp_cmd, - &se_sess->sess_cmd_list, se_cmd_list) { + &se_sess->sess_wait_list, se_cmd_list) { list_del(&se_cmd->se_cmd_list); pr_debug("Waiting for se_cmd: %p t_state: %d, fabric state:" @@ -2283,6 +2288,11 @@ void target_wait_for_sess_cmds(struct se_session *se_sess) se_cmd->se_tfo->release_cmd(se_cmd); } + + spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); + WARN_ON(!list_empty(&se_sess->sess_cmd_list)); + spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); + } EXPORT_SYMBOL(target_wait_for_sess_cmds); diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index e773dfa..4ea4f98 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -543,6 +543,7 @@ struct se_session { struct list_head sess_list; struct list_head sess_acl_list; struct list_head sess_cmd_list; + struct list_head sess_wait_list; spinlock_t sess_cmd_lock; struct kref sess_kref; }; -- cgit v0.10.2 From 1d19f7800d643b270b28d0a969c5eca455d54397 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 15 May 2013 01:30:01 -0700 Subject: ib_srpt: Call target_sess_cmd_list_set_waiting during shutdown_session Given that srpt_release_channel_work() calls target_wait_for_sess_cmds() to allow outstanding se_cmd_t->cmd_kref a change to complete, the call to perform target_sess_cmd_list_set_waiting() needs to happen in srpt_shutdown_session() Also, this patch adds an explicit call to srpt_shutdown_session() within srpt_drain_channel() so that target_sess_cmd_list_set_waiting() will be called in the cases where TFO->shutdown_session() is not triggered directly by TCM. Cc: Joern Engel Cc: Roland Dreier Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 564024e..3f3f041 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -2227,6 +2227,27 @@ static void srpt_close_ch(struct srpt_rdma_ch *ch) } /** + * srpt_shutdown_session() - Whether or not a session may be shut down. + */ +static int srpt_shutdown_session(struct se_session *se_sess) +{ + struct srpt_rdma_ch *ch = se_sess->fabric_sess_ptr; + unsigned long flags; + + spin_lock_irqsave(&ch->spinlock, flags); + if (ch->in_shutdown) { + spin_unlock_irqrestore(&ch->spinlock, flags); + return true; + } + + ch->in_shutdown = true; + target_sess_cmd_list_set_waiting(se_sess); + spin_unlock_irqrestore(&ch->spinlock, flags); + + return true; +} + +/** * srpt_drain_channel() - Drain a channel by resetting the IB queue pair. * @cm_id: Pointer to the CM ID of the channel to be drained. * @@ -2264,6 +2285,9 @@ static void srpt_drain_channel(struct ib_cm_id *cm_id) spin_unlock_irq(&sdev->spinlock); if (do_reset) { + if (ch->sess) + srpt_shutdown_session(ch->sess); + ret = srpt_ch_qp_err(ch); if (ret < 0) printk(KERN_ERR "Setting queue pair in error state" @@ -3467,14 +3491,6 @@ static void srpt_release_cmd(struct se_cmd *se_cmd) } /** - * srpt_shutdown_session() - Whether or not a session may be shut down. - */ -static int srpt_shutdown_session(struct se_session *se_sess) -{ - return true; -} - -/** * srpt_close_session() - Forcibly close a session. * * Callback function invoked by the TCM core to clean up sessions associated diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h index 4caf55c..3dae156 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.h +++ b/drivers/infiniband/ulp/srpt/ib_srpt.h @@ -325,6 +325,7 @@ struct srpt_rdma_ch { u8 sess_name[36]; struct work_struct release_work; struct completion *release_done; + bool in_shutdown; }; /** -- cgit v0.10.2 From 4997b72ee62930cb841d185398ea547d979789f4 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Thu, 30 May 2013 08:44:39 +0200 Subject: raid5: Initialize bi_vcnt The patch that converted raid5 to use bio_reset() forgot to initialize bi_vcnt. Signed-off-by: Kent Overstreet Cc: NeilBrown Cc: linux-raid@vger.kernel.org Tested-by: Ilia Mirkin Signed-off-by: Jens Axboe diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 9359828..753f318 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -664,6 +664,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s) if (test_bit(R5_ReadNoMerge, &sh->dev[i].flags)) bi->bi_rw |= REQ_FLUSH; + bi->bi_vcnt = 1; bi->bi_io_vec[0].bv_len = STRIPE_SIZE; bi->bi_io_vec[0].bv_offset = 0; bi->bi_size = STRIPE_SIZE; @@ -701,6 +702,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s) else rbi->bi_sector = (sh->sector + rrdev->data_offset); + rbi->bi_vcnt = 1; rbi->bi_io_vec[0].bv_len = STRIPE_SIZE; rbi->bi_io_vec[0].bv_offset = 0; rbi->bi_size = STRIPE_SIZE; -- cgit v0.10.2 From ac4e97abce9b80c020e7113325f49e58b7b15e3f Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Thu, 30 May 2013 09:19:35 +0200 Subject: scatterlist: sg_set_buf() argument must be in linear mapping Add a check behind CONFIG_DEBUG_SG to verify this. Signed-off-by: Rusty Russell Signed-off-by: Jens Axboe diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 5951e3f..2680677 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -111,6 +111,9 @@ static inline struct page *sg_page(struct scatterlist *sg) static inline void sg_set_buf(struct scatterlist *sg, const void *buf, unsigned int buflen) { +#ifdef CONFIG_DEBUG_SG + BUG_ON(!virt_addr_valid(buf)); +#endif sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)); } -- cgit v0.10.2 From 3f4d6364084ca0525591836eba4a59f04bb85c68 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Wed, 8 May 2013 16:09:06 +0530 Subject: regulator: palmas: Fix incorrect condition Since 'id' cannot take two values at the same time, the condition should probably be an OR (||) instead of AND (&&). Introduced by commit 28d1e8cd67 ("regulator: palma: add ramp delay support through regulator constraints"). Signed-off-by: Sachin Kamat Signed-off-by: Mark Brown diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index 92ceed0..ced7416 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -840,7 +840,7 @@ static int palmas_regulators_probe(struct platform_device *pdev) break; } - if ((id == PALMAS_REG_SMPS6) && (id == PALMAS_REG_SMPS8)) + if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8)) ramp_delay_support = true; if (ramp_delay_support) { -- cgit v0.10.2 From f232168df0c7e7414b70ac5d8fed83086d441c0b Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Thu, 30 May 2013 15:55:09 +0530 Subject: regulator: palmas: Fix "enable_reg" to point to the correct reg for SMPS10 regulator_enable_regmap() uses enable_reg to enable the regulator. But enable_reg for smps10 points to SMPS10_STATUS which is a read-only register. Fixed the same by having enable_reg set to SMPS10_CTRL. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Mark Brown Cc: stable@vger.kernel.org diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index ced7416..3ae44ac 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -878,7 +878,7 @@ static int palmas_regulators_probe(struct platform_device *pdev) pmic->desc[id].vsel_mask = SMPS10_VSEL; pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, - PALMAS_SMPS10_STATUS); + PALMAS_SMPS10_CTRL); pmic->desc[id].enable_mask = SMPS10_BOOST_EN; pmic->desc[id].min_uV = 3750000; pmic->desc[id].uV_step = 1250000; -- cgit v0.10.2 From 9e43088bb015397930d6c9ea5edba92abc0dc655 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 29 May 2013 18:38:46 +0100 Subject: ASoC: wm8994: Avoid leaking pm_runtime reference on removed jack race Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index dfd997a..19e0b20 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -3836,7 +3836,7 @@ static irqreturn_t wm8958_mic_irq(int irq, void *data) ret); } else if (!(ret & WM1811_JACKDET_LVL)) { dev_dbg(codec->dev, "Ignoring removed jack\n"); - return IRQ_HANDLED; + goto out; } } else if (!(reg & WM8958_MICD_STS)) { snd_soc_jack_report(wm8994->micdet[0].jack, 0, -- cgit v0.10.2 From 308853139fcd440e4ca28d844678c7e69fb40826 Mon Sep 17 00:00:00 2001 From: Paul Zimmerman Date: Fri, 24 May 2013 16:27:56 -0700 Subject: staging: dwc2: fix value of dma_mask Passing the value DMA_BIT_MASK(31) to dma_set_mask() causes the dwc2-pci driver to sometimes fail (cannot enumerate the connected device). Change it to DMA_BIT_MASK(32) instead, which is a more sensible value anyway. Signed-off-by: Paul Zimmerman Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/dwc2/hcd.c b/drivers/staging/dwc2/hcd.c index 827ab78..8551cce 100644 --- a/drivers/staging/dwc2/hcd.c +++ b/drivers/staging/dwc2/hcd.c @@ -2804,9 +2804,8 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq, /* Set device flags indicating whether the HCD supports DMA */ if (hsotg->core_params->dma_enable > 0) { - if (dma_set_mask(hsotg->dev, DMA_BIT_MASK(31)) < 0) - dev_warn(hsotg->dev, - "can't enable workaround for >2GB RAM\n"); + if (dma_set_mask(hsotg->dev, DMA_BIT_MASK(32)) < 0) + dev_warn(hsotg->dev, "can't set DMA mask\n"); if (dma_set_coherent_mask(hsotg->dev, DMA_BIT_MASK(31)) < 0) dev_warn(hsotg->dev, "can't enable workaround for >2GB RAM\n"); -- cgit v0.10.2 From 76554b87c85c0ac5ba56797dda670bad6677f9f1 Mon Sep 17 00:00:00 2001 From: Bob Liu Date: Mon, 27 May 2013 11:15:40 +0800 Subject: drivers: staging: zcache: fix compile error Fix below compile error: drivers/built-in.o: In function `zcache_pampd_free': >> zcache-main.c:(.text+0xb1c8a): undefined reference to `ramster_pampd_free' >> zcache-main.c:(.text+0xb1cbc): undefined reference to `ramster_count_foreign_pages' drivers/built-in.o: In function `zcache_pampd_get_data_and_free': >> zcache-main.c:(.text+0xb1f05): undefined reference to `ramster_count_foreign_pages' drivers/built-in.o: In function `zcache_cpu_notifier': >> zcache-main.c:(.text+0xb228d): undefined reference to `ramster_cpu_up' >> zcache-main.c:(.text+0xb2339): undefined reference to `ramster_cpu_down' drivers/built-in.o: In function `zcache_pampd_create': >> (.text+0xb26ce): undefined reference to `ramster_count_foreign_pages' drivers/built-in.o: In function `zcache_pampd_create': >> (.text+0xb27ef): undefined reference to `ramster_count_foreign_pages' drivers/built-in.o: In function `zcache_put_page': >> (.text+0xb299f): undefined reference to `ramster_do_preload_flnode' drivers/built-in.o: In function `zcache_flush_page': >> (.text+0xb2ea3): undefined reference to `ramster_do_preload_flnode' drivers/built-in.o: In function `zcache_flush_object': >> (.text+0xb307c): undefined reference to `ramster_do_preload_flnode' drivers/built-in.o: In function `zcache_init': >> zcache-main.c:(.text+0xb3629): undefined reference to `ramster_register_pamops' >> zcache-main.c:(.text+0xb3868): undefined reference to `ramster_init' >> drivers/built-in.o:(.rodata+0x15058): undefined reference to `ramster_foreign_eph_pages' >> drivers/built-in.o:(.rodata+0x15078): undefined reference to `ramster_foreign_pers_pages' Reported-by: Fengguang Wu Signed-off-by: Bob Liu Acked-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/zcache/ramster.h b/drivers/staging/zcache/ramster.h index e1f91d5..a858666 100644 --- a/drivers/staging/zcache/ramster.h +++ b/drivers/staging/zcache/ramster.h @@ -11,10 +11,6 @@ #ifndef _ZCACHE_RAMSTER_H_ #define _ZCACHE_RAMSTER_H_ -#ifdef CONFIG_RAMSTER_MODULE -#define CONFIG_RAMSTER -#endif - #ifdef CONFIG_RAMSTER #include "ramster/ramster.h" #else diff --git a/drivers/staging/zcache/ramster/debug.c b/drivers/staging/zcache/ramster/debug.c index 327e4f0..5b26ee9 100644 --- a/drivers/staging/zcache/ramster/debug.c +++ b/drivers/staging/zcache/ramster/debug.c @@ -1,6 +1,8 @@ #include #include "debug.h" +ssize_t ramster_foreign_eph_pages; +ssize_t ramster_foreign_pers_pages; #ifdef CONFIG_DEBUG_FS #include diff --git a/drivers/staging/zcache/ramster/ramster.c b/drivers/staging/zcache/ramster/ramster.c index b18b887..a937ce1 100644 --- a/drivers/staging/zcache/ramster/ramster.c +++ b/drivers/staging/zcache/ramster/ramster.c @@ -66,8 +66,6 @@ static int ramster_remote_target_nodenum __read_mostly = -1; /* Used by this code. */ long ramster_flnodes; -ssize_t ramster_foreign_eph_pages; -ssize_t ramster_foreign_pers_pages; /* FIXME frontswap selfshrinking knobs in debugfs? */ static LIST_HEAD(ramster_rem_op_list); @@ -399,14 +397,18 @@ void ramster_count_foreign_pages(bool eph, int count) inc_ramster_foreign_eph_pages(); } else { dec_ramster_foreign_eph_pages(); +#ifdef CONFIG_RAMSTER_DEBUG WARN_ON_ONCE(ramster_foreign_eph_pages < 0); +#endif } } else { if (count > 0) { inc_ramster_foreign_pers_pages(); } else { dec_ramster_foreign_pers_pages(); +#ifdef CONFIG_RAMSTER_DEBUG WARN_ON_ONCE(ramster_foreign_pers_pages < 0); +#endif } } } -- cgit v0.10.2 From 077f5f1c23b3cf1134c031677497dfb6077e6bdd Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 29 May 2013 11:33:52 -0400 Subject: USB: EHCI: fix regression related to qh_refresh() This patch adds some code that inadvertently got left out of commit c1fdb68e3d73741630ca16695cf9176c233be7ed (USB: EHCI: changes related to qh_refresh()). The calls to qh_refresh() and qh_link_periodic() were taken out of qh_schedule(); therefore it is necessary to call these routines manually after calling qh_schedule(). Signed-off-by: Alan Stern Reported-and-tested-by: Oleksij Rempel Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index f3c1028..f80d033 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -646,6 +646,10 @@ static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) /* reschedule QH iff another request is queued */ if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) { rc = qh_schedule(ehci, qh); + if (rc == 0) { + qh_refresh(ehci, qh); + qh_link_periodic(ehci, qh); + } /* An error here likely indicates handshake failure * or no space left in the schedule. Neither fault @@ -653,9 +657,10 @@ static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) * * FIXME kill the now-dysfunctional queued urbs */ - if (rc != 0) + else { ehci_err(ehci, "can't reschedule qh %p, err %d\n", qh, rc); + } } /* maybe turn off periodic schedule */ -- cgit v0.10.2 From 7afce3f5e56e9cb97cf1f35832bf8e8dde08cc45 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 30 May 2013 13:42:27 +0100 Subject: ASoC: wm8994: Ensure microphone detection state is reset on removal Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 19e0b20..29e95f9 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -3842,6 +3842,7 @@ static irqreturn_t wm8958_mic_irq(int irq, void *data) snd_soc_jack_report(wm8994->micdet[0].jack, 0, SND_JACK_MECHANICAL | SND_JACK_HEADSET | wm8994->btn_mask); + wm8994->mic_detecting = true; goto out; } -- cgit v0.10.2 From 37448adfc7ce0d6d5892b87aa8d57edde4126f49 Mon Sep 17 00:00:00 2001 From: Lance Ortiz Date: Thu, 30 May 2013 08:25:12 -0600 Subject: aerdrv: Move cper_print_aer() call out of interrupt context The following warning was seen on 3.9 when a corrected PCIe error was being handled by the AER subsystem. WARNING: at .../drivers/pci/search.c:214 pci_get_dev_by_id+0x8a/0x90() This occurred because a call to pci_get_domain_bus_and_slot() was added to cper_print_pcie() to setup for the call to cper_print_aer(). The warning showed up because cper_print_pcie() is called in an interrupt context and pci_get* functions are not supposed to be called in that context. The solution is to move the cper_print_aer() call out of the interrupt context and into aer_recover_work_func() to avoid any warnings when calling pci_get* functions. Signed-off-by: Lance Ortiz Acked-by: Borislav Petkov Acked-by: Rafael J. Wysocki Signed-off-by: Tony Luck diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c index fefc2ca..33dc6a0 100644 --- a/drivers/acpi/apei/cper.c +++ b/drivers/acpi/apei/cper.c @@ -250,10 +250,6 @@ static const char *cper_pcie_port_type_strs[] = { static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, const struct acpi_hest_generic_data *gdata) { -#ifdef CONFIG_ACPI_APEI_PCIEAER - struct pci_dev *dev; -#endif - if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE) printk("%s""port_type: %d, %s\n", pfx, pcie->port_type, pcie->port_type < ARRAY_SIZE(cper_pcie_port_type_strs) ? @@ -285,20 +281,6 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, printk( "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n", pfx, pcie->bridge.secondary_status, pcie->bridge.control); -#ifdef CONFIG_ACPI_APEI_PCIEAER - dev = pci_get_domain_bus_and_slot(pcie->device_id.segment, - pcie->device_id.bus, pcie->device_id.function); - if (!dev) { - pr_err("PCI AER Cannot get PCI device %04x:%02x:%02x.%d\n", - pcie->device_id.segment, pcie->device_id.bus, - pcie->device_id.slot, pcie->device_id.function); - return; - } - if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) - cper_print_aer(pfx, dev, gdata->error_severity, - (struct aer_capability_regs *) pcie->aer_info); - pci_dev_put(dev); -#endif } static const char *apei_estatus_section_flag_strs[] = { diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index d668a8a..403baf4 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -454,7 +454,9 @@ static void ghes_do_proc(struct ghes *ghes, aer_severity = cper_severity_to_aer(sev); aer_recover_queue(pcie_err->device_id.segment, pcie_err->device_id.bus, - devfn, aer_severity); + devfn, aer_severity, + (struct aer_capability_regs *) + pcie_err->aer_info); } } diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 8ec8b4f..0f4554e 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -580,6 +580,7 @@ struct aer_recover_entry u8 devfn; u16 domain; int severity; + struct aer_capability_regs *regs; }; static DEFINE_KFIFO(aer_recover_ring, struct aer_recover_entry, @@ -593,7 +594,7 @@ static DEFINE_SPINLOCK(aer_recover_ring_lock); static DECLARE_WORK(aer_recover_work, aer_recover_work_func); void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, - int severity) + int severity, struct aer_capability_regs *aer_regs) { unsigned long flags; struct aer_recover_entry entry = { @@ -601,6 +602,7 @@ void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, .devfn = devfn, .domain = domain, .severity = severity, + .regs = aer_regs, }; spin_lock_irqsave(&aer_recover_ring_lock, flags); @@ -627,6 +629,7 @@ static void aer_recover_work_func(struct work_struct *work) PCI_SLOT(entry.devfn), PCI_FUNC(entry.devfn)); continue; } + cper_print_aer(pdev, entry.severity, entry.regs); do_recovery(pdev, entry.severity); pci_dev_put(pdev); } diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c index 5ab1425..2c7c9f5 100644 --- a/drivers/pci/pcie/aer/aerdrv_errprint.c +++ b/drivers/pci/pcie/aer/aerdrv_errprint.c @@ -220,7 +220,7 @@ int cper_severity_to_aer(int cper_severity) } EXPORT_SYMBOL_GPL(cper_severity_to_aer); -void cper_print_aer(const char *prefix, struct pci_dev *dev, int cper_severity, +void cper_print_aer(struct pci_dev *dev, int cper_severity, struct aer_capability_regs *aer) { int aer_severity, layer, agent, status_strs_size, tlp_header_valid = 0; @@ -244,7 +244,7 @@ void cper_print_aer(const char *prefix, struct pci_dev *dev, int cper_severity, agent = AER_GET_AGENT(aer_severity, status); dev_err(&dev->dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask); - cper_print_bits(prefix, status, status_strs, status_strs_size); + cper_print_bits("", status, status_strs, status_strs_size); dev_err(&dev->dev, "aer_layer=%s, aer_agent=%s\n", aer_error_layer[layer], aer_agent_string[agent]); if (aer_severity != AER_CORRECTABLE) diff --git a/include/linux/aer.h b/include/linux/aer.h index ec10e1b..737f90a 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -49,10 +49,11 @@ static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) } #endif -extern void cper_print_aer(const char *prefix, struct pci_dev *dev, +extern void cper_print_aer(struct pci_dev *dev, int cper_severity, struct aer_capability_regs *aer); extern int cper_severity_to_aer(int cper_severity); extern void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, - int severity); + int severity, + struct aer_capability_regs *aer_regs); #endif //_AER_H_ -- cgit v0.10.2 From 2d403f7b198163d14a37ab79de33e27e390bb3b1 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 30 May 2013 12:44:47 -0700 Subject: ARM: OMAP3: Fix iva2_pwrdm settings for 3703 Commit a819c4f1 (ARM: OMAP3: PM: Only access IVA if one exists) changed PM to not access IVA registers on omaps that don't have them. Turns out we still need to idle iva2 as otherwise iva2_pwrdm will stay on and block deeper idle states. It seems that the only part of the reset that may not be needed is the setting of the iva2 boot mode to idle. But as that register seems to be there and is harmless if no iva2 is on the SoC, it's probably safest to do the complete reset. Acked-by: Mark A. Greer Acked-by: Kevin Hilman Tested-by: Yegor Yefremov Signed-off-by: Tony Lindgren diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index c018593..5a2d803 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -546,8 +546,10 @@ static void __init prcm_setup_regs(void) /* Clear any pending PRCM interrupts */ omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); - if (omap3_has_iva()) - omap3_iva_idle(); + /* + * We need to idle iva2_pwrdm even on am3703 with no iva2. + */ + omap3_iva_idle(); omap3_d2d_idle(); } -- cgit v0.10.2 From eb54d43707c69340581940e1fcaecb4d7d17b814 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 May 2013 14:37:56 -0400 Subject: NFS: Fix security flavor negotiation with legacy binary mounts Darrick J. Wong reports: > I have a kvm-based testing setup that netboots VMs over NFS, the > client end of which seems to have broken somehow in 3.10-rc1. The > server's exports file looks like this: > > /storage/mtr/x64 192.168.122.0/24(ro,sync,no_root_squash,no_subtree_check) > > On the client end (inside the VM), the initrd runs the following > command to try to mount the rootfs over NFS: > > # mount -o nolock -o ro -o retrans=10 192.168.122.1:/storage/mtr/x64/ /root > > (Note: This is the busybox mount command.) > > The mount fails with -EINVAL. Commit 4580a92d44 "NFS: Use server-recommended security flavor by default (NFSv3)" introduced a behavior regression for NFS mounts done via a legacy binary mount(2) call. Ensure that a default security flavor is specified for legacy binary mount requests, since they do not invoke nfs_select_flavor() in the kernel. Busybox uses klibc's nfsmount command, which performs NFS mounts using the legacy binary mount data format. /sbin/mount.nfs is not affected by this regression. Reported-by: Darrick J. Wong Signed-off-by: Chuck Lever Tested-by: Darrick J. Wong Acked-by: Weston Andros Adamson Signed-off-by: Trond Myklebust diff --git a/fs/nfs/super.c b/fs/nfs/super.c index a366107..2d7525f 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1942,6 +1942,7 @@ static int nfs23_validate_mount_data(void *options, args->namlen = data->namlen; args->bsize = data->bsize; + args->auth_flavors[0] = RPC_AUTH_UNIX; if (data->flags & NFS_MOUNT_SECFLAVOUR) args->auth_flavors[0] = data->pseudoflavor; if (!args->nfs_server.hostname) @@ -2637,6 +2638,7 @@ static int nfs4_validate_mount_data(void *options, goto out_no_address; args->nfs_server.port = ntohs(((struct sockaddr_in *)sap)->sin_port); + args->auth_flavors[0] = RPC_AUTH_UNIX; if (data->auth_flavourlen) { if (data->auth_flavourlen > 1) goto out_inval_auth; -- cgit v0.10.2 From 5489e948dc0f41a249c109d74612bf5aceab8f38 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Thu, 30 May 2013 22:23:44 +0200 Subject: MAINTAINERS: Framebuffer Layer maintainers update Tomi and I will now take care of the Framebuffer Layer The git tree is now on kernel.org Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Cc: Tomi Valkeinen Cc: Olof Johansson Cc: Andrew Morton Cc: Arnd Bergmann Cc: Florian Tobias Schandinat Cc: linux-fbdev@vger.kernel.org Signed-off-by: Linus Torvalds diff --git a/MAINTAINERS b/MAINTAINERS index fd3a495..7714c3c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3322,11 +3322,12 @@ F: drivers/net/wan/dlci.c F: drivers/net/wan/sdla.c FRAMEBUFFER LAYER -M: Florian Tobias Schandinat +M: Jean-Christophe Plagniol-Villard +M: Tomi Valkeinen L: linux-fbdev@vger.kernel.org W: http://linux-fbdev.sourceforge.net/ Q: http://patchwork.kernel.org/project/linux-fbdev/list/ -T: git git://github.com/schandinat/linux-2.6.git fbdev-next +T: git git://git.kernel.org/pub/scm/linux/kernel/git/plagnioj/linux-fbdev.git S: Maintained F: Documentation/fb/ F: Documentation/devicetree/bindings/fb/ -- cgit v0.10.2 From 08fb39051f5581df45ae2a20c6cf2d0c4cddf7c2 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:00 +1000 Subject: xfs: avoid nesting transactions in xfs_qm_scall_setqlim() Lockdep reports: ============================================= [ INFO: possible recursive locking detected ] 3.9.0+ #3 Not tainted --------------------------------------------- setquota/28368 is trying to acquire lock: (sb_internal){++++.?}, at: [] xfs_trans_alloc+0x26/0x50 but task is already holding lock: (sb_internal){++++.?}, at: [] xfs_trans_alloc+0x26/0x50 from xfs_qm_scall_setqlim()->xfs_dqread() when a dquot needs to be allocated. xfs_qm_scall_setqlim() is starting a transaction and then not passing it into xfs_qm_dqet() and so it starts it's own transaction when allocating the dquot. Splat! Fix this by not allocating the dquot in xfs_qm_scall_setqlim() inside the setqlim transaction. This requires getting the dquot first (and allocating it if necessary) then dropping and relocking the dquot before joining it to the setqlim transaction. Reported-by: Michael L. Semon Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit f648167f3ac79018c210112508c732ea9bf67c7b) diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c index c41190c..6cdf6ff 100644 --- a/fs/xfs/xfs_qm_syscalls.c +++ b/fs/xfs/xfs_qm_syscalls.c @@ -489,31 +489,36 @@ xfs_qm_scall_setqlim( if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0) return 0; - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM); - error = xfs_trans_reserve(tp, 0, XFS_QM_SETQLIM_LOG_RES(mp), - 0, 0, XFS_DEFAULT_LOG_COUNT); - if (error) { - xfs_trans_cancel(tp, 0); - return (error); - } - /* * We don't want to race with a quotaoff so take the quotaoff lock. - * (We don't hold an inode lock, so there's nothing else to stop - * a quotaoff from happening). (XXXThis doesn't currently happen - * because we take the vfslock before calling xfs_qm_sysent). + * We don't hold an inode lock, so there's nothing else to stop + * a quotaoff from happening. */ mutex_lock(&q->qi_quotaofflock); /* - * Get the dquot (locked), and join it to the transaction. - * Allocate the dquot if this doesn't exist. + * Get the dquot (locked) before we start, as we need to do a + * transaction to allocate it if it doesn't exist. Once we have the + * dquot, unlock it so we can start the next transaction safely. We hold + * a reference to the dquot, so it's safe to do this unlock/lock without + * it being reclaimed in the mean time. */ - if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) { - xfs_trans_cancel(tp, XFS_TRANS_ABORT); + error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp); + if (error) { ASSERT(error != ENOENT); goto out_unlock; } + xfs_dqunlock(dqp); + + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM); + error = xfs_trans_reserve(tp, 0, XFS_QM_SETQLIM_LOG_RES(mp), + 0, 0, XFS_DEFAULT_LOG_COUNT); + if (error) { + xfs_trans_cancel(tp, 0); + goto out_rele; + } + + xfs_dqlock(dqp); xfs_trans_dqjoin(tp, dqp); ddq = &dqp->q_core; @@ -621,9 +626,10 @@ xfs_qm_scall_setqlim( xfs_trans_log_dquot(tp, dqp); error = xfs_trans_commit(tp, 0); - xfs_qm_dqrele(dqp); - out_unlock: +out_rele: + xfs_qm_dqrele(dqp); +out_unlock: mutex_unlock(&q->qi_quotaofflock); return error; } -- cgit v0.10.2 From 2962f5a5dcc56f69cbf62121a7be67cc15d6940b Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 27 May 2013 16:38:25 +1000 Subject: xfs: kill suid/sgid through the truncate path. XFS has failed to kill suid/sgid bits correctly when truncating files of non-zero size since commit c4ed4243 ("xfs: split xfs_setattr") introduced in the 3.1 kernel. Fix it. Fix it. cc: stable kernel Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Ben Myers (cherry picked from commit 56c19e89b38618390addfc743d822f99519055c6) diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index d82efaa..ca9ecaa 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -455,6 +455,28 @@ xfs_vn_getattr( return 0; } +static void +xfs_setattr_mode( + struct xfs_trans *tp, + struct xfs_inode *ip, + struct iattr *iattr) +{ + struct inode *inode = VFS_I(ip); + umode_t mode = iattr->ia_mode; + + ASSERT(tp); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) + mode &= ~S_ISGID; + + ip->i_d.di_mode &= S_IFMT; + ip->i_d.di_mode |= mode & ~S_IFMT; + + inode->i_mode &= S_IFMT; + inode->i_mode |= mode & ~S_IFMT; +} + int xfs_setattr_nonsize( struct xfs_inode *ip, @@ -606,18 +628,8 @@ xfs_setattr_nonsize( /* * Change file access modes. */ - if (mask & ATTR_MODE) { - umode_t mode = iattr->ia_mode; - - if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) - mode &= ~S_ISGID; - - ip->i_d.di_mode &= S_IFMT; - ip->i_d.di_mode |= mode & ~S_IFMT; - - inode->i_mode &= S_IFMT; - inode->i_mode |= mode & ~S_IFMT; - } + if (mask & ATTR_MODE) + xfs_setattr_mode(tp, ip, iattr); /* * Change file access or modified times. @@ -714,9 +726,8 @@ xfs_setattr_size( return XFS_ERROR(error); ASSERT(S_ISREG(ip->i_d.di_mode)); - ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| - ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| - ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); + ASSERT((mask & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| + ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); if (!(flags & XFS_ATTR_NOLOCK)) { lock_flags |= XFS_IOLOCK_EXCL; @@ -860,6 +871,12 @@ xfs_setattr_size( xfs_inode_clear_eofblocks_tag(ip); } + /* + * Change file access modes. + */ + if (mask & ATTR_MODE) + xfs_setattr_mode(tp, ip, iattr); + if (mask & ATTR_CTIME) { inode->i_ctime = iattr->ia_ctime; ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; -- cgit v0.10.2 From 7d2ffe80aa000a149246b3745968634192eb5358 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 27 May 2013 16:38:23 +1000 Subject: xfs: fix split buffer vector log recovery support A long time ago in a galaxy far away.... .. the was a commit made to fix some ilinux specific "fragmented buffer" log recovery problem: http://oss.sgi.com/cgi-bin/gitweb.cgi?p=archive/xfs-import.git;a=commitdiff;h=b29c0bece51da72fb3ff3b61391a391ea54e1603 That problem occurred when a contiguous dirty region of a buffer was split across across two pages of an unmapped buffer. It's been a long time since that has been done in XFS, and the changes to log the entire inode buffers for CRC enabled filesystems has re-introduced that corner case. And, of course, it turns out that the above commit didn't actually fix anything - it just ensured that log recovery is guaranteed to fail when this situation occurs. And now for the gory details. xfstest xfs/085 is failing with this assert: XFS (vdb): bad number of regions (0) in inode log format XFS: Assertion failed: 0, file: fs/xfs/xfs_log_recover.c, line: 1583 Largely undocumented factoid #1: Log recovery depends on all log buffer format items starting with this format: struct foo_log_format { __uint16_t type; __uint16_t size; .... As recoery uses the size field and assumptions about 32 bit alignment in decoding format items. So don't pay much attention to the fact log recovery thinks that it decoding an inode log format item - it just uses them to determine what the size of the item is. But why would it see a log format item with a zero size? Well, luckily enough xfs_logprint uses the same code and gives the same error, so with a bit of gdb magic, it turns out that it isn't a log format that is being decoded. What logprint tells us is this: Oper (130): tid: a0375e1a len: 28 clientid: TRANS flags: none BUF: #regs: 2 start blkno: 144 (0x90) len: 16 bmap size: 2 flags: 0x4000 Oper (131): tid: a0375e1a len: 4096 clientid: TRANS flags: none BUF DATA ---------------------------------------------------------------------------- Oper (132): tid: a0375e1a len: 4096 clientid: TRANS flags: none xfs_logprint: unknown log operation type (4e49) ********************************************************************** * ERROR: data block=2 * ********************************************************************** That we've got a buffer format item (oper 130) that has two regions; the format item itself and one dirty region. The subsequent region after the buffer format item and it's data is them what we are tripping over, and the first bytes of it at an inode magic number. Not a log opheader like there is supposed to be. That means there's a problem with the buffer format item. It's dirty data region is 4096 bytes, and it contains - you guessed it - initialised inodes. But inode buffers are 8k, not 4k, and we log them in their entirety. So something is wrong here. The buffer format item contains: (gdb) p /x *(struct xfs_buf_log_format *)in_f $22 = {blf_type = 0x123c, blf_size = 0x2, blf_flags = 0x4000, blf_len = 0x10, blf_blkno = 0x90, blf_map_size = 0x2, blf_data_map = {0xffffffff, 0xffffffff, .... }} Two regions, and a signle dirty contiguous region of 64 bits. 64 * 128 = 8k, so this should be followed by a single 8k region of data. And the blf_flags tell us that the type of buffer is a XFS_BLFT_DINO_BUF. It contains inodes. And because it doesn't have the XFS_BLF_INODE_BUF flag set, that means it's an inode allocation buffer. So, it should be followed by 8k of inode data. But we know that the next region has a header of: (gdb) p /x *ohead $25 = {oh_tid = 0x1a5e37a0, oh_len = 0x100000, oh_clientid = 0x69, oh_flags = 0x0, oh_res2 = 0x0} and so be32_to_cpu(oh_len) = 0x1000 = 4096 bytes. It's simply not long enough to hold all the logged data. There must be another region. There is - there's a following opheader for another 4k of data that contains the other half of the inode cluster data - the one we assert fail on because it's not a log format header. So why is the second part of the data not being accounted to the correct buffer log format structure? It took a little more work with gdb to work out that the buffer log format structure was both expecting it to be there but hadn't accounted for it. It was at that point I went to the kernel code, as clearly this wasn't a bug in xfs_logprint and the kernel was writing bad stuff to the log. First port of call was the buffer item formatting code, and the discontiguous memory/contiguous dirty region handling code immediately stood out. I've wondered for a long time why the code had this comment in it: vecp->i_addr = xfs_buf_offset(bp, buffer_offset); vecp->i_len = nbits * XFS_BLF_CHUNK; vecp->i_type = XLOG_REG_TYPE_BCHUNK; /* * You would think we need to bump the nvecs here too, but we do not * this number is used by recovery, and it gets confused by the boundary * split here * nvecs++; */ vecp++; And it didn't account for the extra vector pointer. The case being handled here is that a contiguous dirty region lies across a boundary that cannot be memcpy()d across, and so has to be split into two separate operations for xlog_write() to perform. What this code assumes is that what is written to the log is two consecutive blocks of data that are accounted in the buf log format item as the same contiguous dirty region and so will get decoded as such by the log recovery code. The thing is, xlog_write() knows nothing about this, and so just does it's normal thing of adding an opheader for each vector. That means the 8k region gets written to the log as two separate regions of 4k each, but because nvecs has not been incremented, the buf log format item accounts for only one of them. Hence when we come to log recovery, we process the first 4k region and then expect to come across a new item that starts with a log format structure of some kind that tells us whenteh next data is going to be. Instead, we hit raw buffer data and things go bad real quick. So, the commit from 2002 that commented out nvecs++ is just plain wrong. It breaks log recovery completely, and it would seem the only reason this hasn't been since then is that we don't log large contigous regions of multi-page unmapped buffers very often. Never would be a closer estimate, at least until the CRC code came along.... So, lets fix that by restoring the nvecs accounting for the extra region when we hit this case..... .... and there's the problemin log recovery it is apparently working around: XFS: Assertion failed: i == item->ri_total, file: fs/xfs/xfs_log_recover.c, line: 2135 Yup, xlog_recover_do_reg_buffer() doesn't handle contigous dirty regions being broken up into multiple regions by the log formatting code. That's an easy fix, though - if the number of contiguous dirty bits exceeds the length of the region being copied out of the log, only account for the number of dirty bits that region covers, and then loop again and copy more from the next region. It's a 2 line fix. Now xfstests xfs/085 passes, we have one less piece of mystery code, and one more important piece of knowledge about how to structure new log format items.. Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers (cherry picked from commit 709da6a61aaf12181a8eea8443919ae5fc1b731d) diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index cf26347..4ec4317 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -262,12 +262,7 @@ xfs_buf_item_format_segment( vecp->i_addr = xfs_buf_offset(bp, buffer_offset); vecp->i_len = nbits * XFS_BLF_CHUNK; vecp->i_type = XLOG_REG_TYPE_BCHUNK; -/* - * You would think we need to bump the nvecs here too, but we do not - * this number is used by recovery, and it gets confused by the boundary - * split here - * nvecs++; - */ + nvecs++; vecp++; first_bit = next_bit; last_bit = next_bit; diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 93f03ec..d9e4d3c 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2097,6 +2097,17 @@ xlog_recover_do_reg_buffer( ((uint)bit << XFS_BLF_SHIFT) + (nbits << XFS_BLF_SHIFT)); /* + * The dirty regions logged in the buffer, even though + * contiguous, may span multiple chunks. This is because the + * dirty region may span a physical page boundary in a buffer + * and hence be split into two separate vectors for writing into + * the log. Hence we need to trim nbits back to the length of + * the current region being copied out of the log. + */ + if (item->ri_buf[i].i_len < (nbits << XFS_BLF_SHIFT)) + nbits = item->ri_buf[i].i_len >> XFS_BLF_SHIFT; + + /* * Do a sanity check if this is a dquot buffer. Just checking * the first dquot in the buffer should do. XXXThis is * probably a good thing to do for other buf types also. -- cgit v0.10.2 From 1de09d1ae48152e56399aba0bfd984fb0ddae6b0 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 27 May 2013 16:38:20 +1000 Subject: xfs: fix incorrect remote symlink block count When CRCs are enabled, the number of blocks needed to hold a remote symlink on a 1k block size filesystem may be 2 instead of 1. The transaction reservation for the allocated blocks was not taking this into account and only allocating one block. Hence when trying to read or invalidate such symlinks, we are mapping a hole where there should be a block and things go bad at that point. Fix the reservation to use the correct block count, clean up the block count calculation similar to the remote attribute calculation, and add a debug guard to detect when we don't write the entire symlink to disk. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Reviewed-by: Brian Foster Signed-off-by: Ben Myers (cherry picked from commit 321a95839e65db3759a07a3655184b0283af90fe) diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c index 5f234389..195a403 100644 --- a/fs/xfs/xfs_symlink.c +++ b/fs/xfs/xfs_symlink.c @@ -56,16 +56,9 @@ xfs_symlink_blocks( struct xfs_mount *mp, int pathlen) { - int fsblocks = 0; - int len = pathlen; + int buflen = XFS_SYMLINK_BUF_SPACE(mp, mp->m_sb.sb_blocksize); - do { - fsblocks++; - len -= XFS_SYMLINK_BUF_SPACE(mp, mp->m_sb.sb_blocksize); - } while (len > 0); - - ASSERT(fsblocks <= XFS_SYMLINK_MAPS); - return fsblocks; + return (pathlen + buflen - 1) / buflen; } static int @@ -405,7 +398,7 @@ xfs_symlink( if (pathlen <= XFS_LITINO(mp, dp->i_d.di_version)) fs_blocks = 0; else - fs_blocks = XFS_B_TO_FSB(mp, pathlen); + fs_blocks = xfs_symlink_blocks(mp, pathlen); resblks = XFS_SYMLINK_SPACE_RES(mp, link_name->len, fs_blocks); error = xfs_trans_reserve(tp, resblks, XFS_SYMLINK_LOG_RES(mp), 0, XFS_TRANS_PERM_LOG_RES, XFS_SYMLINK_LOG_COUNT); @@ -512,7 +505,7 @@ xfs_symlink( cur_chunk = target_path; offset = 0; for (n = 0; n < nmaps; n++) { - char *buf; + char *buf; d = XFS_FSB_TO_DADDR(mp, mval[n].br_startblock); byte_cnt = XFS_FSB_TO_B(mp, mval[n].br_blockcount); @@ -525,9 +518,7 @@ xfs_symlink( bp->b_ops = &xfs_symlink_buf_ops; byte_cnt = XFS_SYMLINK_BUF_SPACE(mp, byte_cnt); - if (pathlen < byte_cnt) { - byte_cnt = pathlen; - } + byte_cnt = min(byte_cnt, pathlen); buf = bp->b_addr; buf += xfs_symlink_hdr_set(mp, ip->i_ino, offset, @@ -542,6 +533,7 @@ xfs_symlink( xfs_trans_log_buf(tp, bp, 0, (buf + byte_cnt - 1) - (char *)bp->b_addr); } + ASSERT(pathlen == 0); } /* -- cgit v0.10.2 From e7927e879d12d27aa06b9bbed57cc32dcd7d17fd Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 27 May 2013 16:38:26 +1000 Subject: xfs: add fsgeom flag for v5 superblock support. Currently userspace has no way of determining that a filesystem is CRC enabled. Add a flag to the XFS_IOC_FSGEOMETRY ioctl output to indicate that the filesystem has v5 superblock support enabled. This will allow xfs_info to correctly report the state of the filesystem. Signed-off-by: Dave Chinner Reviewed-by: Eric Sandeen Reviewed-by: Brian Foster Signed-off-by: Ben Myers (cherry picked from commit 74137fff067961c9aca1e14d073805c3de8549bd) diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h index 6dda3f9..d046955 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/xfs_fs.h @@ -236,6 +236,7 @@ typedef struct xfs_fsop_resblks { #define XFS_FSOP_GEOM_FLAGS_PROJID32 0x0800 /* 32-bit project IDs */ #define XFS_FSOP_GEOM_FLAGS_DIRV2CI 0x1000 /* ASCII only CI names */ #define XFS_FSOP_GEOM_FLAGS_LAZYSB 0x4000 /* lazy superblock counters */ +#define XFS_FSOP_GEOM_FLAGS_V5SB 0x8000 /* version 5 superblock */ /* diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index 87595b2..3c3644e 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -99,7 +99,9 @@ xfs_fs_geometry( (xfs_sb_version_hasattr2(&mp->m_sb) ? XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) | (xfs_sb_version_hasprojid32bit(&mp->m_sb) ? - XFS_FSOP_GEOM_FLAGS_PROJID32 : 0); + XFS_FSOP_GEOM_FLAGS_PROJID32 : 0) | + (xfs_sb_version_hascrc(&mp->m_sb) ? + XFS_FSOP_GEOM_FLAGS_V5SB : 0); geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? mp->m_sb.sb_logsectsize : BBSIZE; geo->rtsectsize = mp->m_sb.sb_blocksize; -- cgit v0.10.2 From 7c9950fd2ac97431230544142d5e652e1b948372 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 27 May 2013 16:38:24 +1000 Subject: xfs: disable swap extents ioctl on CRC enabled filesystems Currently, swapping extents from one inode to another is a simple act of switching data and attribute forks from one inode to another. This, unfortunately in no longer so simple with CRC enabled filesystems as there is owner information embedded into the BMBT blocks that are swapped between inodes. Hence swapping the forks between inodes results in the inodes having mapping blocks that point to the wrong owner and hence are considered corrupt. To fix this we need an extent tree block or record based swap algorithm so that the BMBT block owner information can be updated atomically in the swap transaction. This is a significant piece of new work, so for the moment simply don't allow swap extent operations to succeed on CRC enabled filesystems. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Reviewed-by: Brian Foster Signed-off-by: Ben Myers (cherry picked from commit 02f75405a75eadfb072609f6bf839e027de6a29a) diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c index f852b08..c407e1c 100644 --- a/fs/xfs/xfs_dfrag.c +++ b/fs/xfs/xfs_dfrag.c @@ -219,6 +219,14 @@ xfs_swap_extents( int taforkblks = 0; __uint64_t tmp; + /* + * We have no way of updating owner information in the BMBT blocks for + * each inode on CRC enabled filesystems, so to avoid corrupting the + * this metadata we simply don't allow extent swaps to occur. + */ + if (xfs_sb_version_hascrc(&mp->m_sb)) + return XFS_ERROR(EINVAL); + tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL); if (!tempifp) { error = XFS_ERROR(ENOMEM); -- cgit v0.10.2 From e400d27d1690d609f203f2d7d8efebc98cbc3089 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 28 May 2013 18:37:17 +1000 Subject: xfs: fix dir3 freespace block corruption When the directory freespace index grows to a second block (2017 4k data blocks in the directory), the initialisation of the second new block header goes wrong. The write verifier fires a corruption error indicating that the block number in the header is zero. This was being tripped by xfs/110. The problem is that the initialisation of the new block is done just fine in xfs_dir3_free_get_buf(), but the caller then users a dirv2 structure to zero on-disk header fields that xfs_dir3_free_get_buf() has already zeroed. These lined up with the block number in the dir v3 header format. While looking at this, I noticed that the struct xfs_dir3_free_hdr() had 4 bytes of padding in it that wasn't defined as padding or being zeroed by the initialisation. Add a pad field declaration and fully zero the on disk and in-core headers in xfs_dir3_free_get_buf() so that this is never an issue in the future. Note that this doesn't change the on-disk layout, just makes the 32 bits of padding in the layout explicit. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 5ae6e6a401957698f2bd8c9f4a86d86d02199fea) diff --git a/fs/xfs/xfs_dir2_format.h b/fs/xfs/xfs_dir2_format.h index a3b1bd8..995f1f5 100644 --- a/fs/xfs/xfs_dir2_format.h +++ b/fs/xfs/xfs_dir2_format.h @@ -715,6 +715,7 @@ struct xfs_dir3_free_hdr { __be32 firstdb; /* db of first entry */ __be32 nvalid; /* count of valid entries */ __be32 nused; /* count of used entries */ + __be32 pad; /* 64 bit alignment. */ }; struct xfs_dir3_free { diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 5246de4..2226a00 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -263,18 +263,19 @@ xfs_dir3_free_get_buf( * Initialize the new block to be empty, and remember * its first slot as our empty slot. */ - hdr.magic = XFS_DIR2_FREE_MAGIC; - hdr.firstdb = 0; - hdr.nused = 0; - hdr.nvalid = 0; + memset(bp->b_addr, 0, sizeof(struct xfs_dir3_free_hdr)); + memset(&hdr, 0, sizeof(hdr)); + if (xfs_sb_version_hascrc(&mp->m_sb)) { struct xfs_dir3_free_hdr *hdr3 = bp->b_addr; hdr.magic = XFS_DIR3_FREE_MAGIC; + hdr3->hdr.blkno = cpu_to_be64(bp->b_bn); hdr3->hdr.owner = cpu_to_be64(dp->i_ino); uuid_copy(&hdr3->hdr.uuid, &mp->m_sb.sb_uuid); - } + } else + hdr.magic = XFS_DIR2_FREE_MAGIC; xfs_dir3_free_hdr_to_disk(bp->b_addr, &hdr); *bpp = bp; return 0; @@ -1921,8 +1922,6 @@ xfs_dir2_node_addname_int( */ freehdr.firstdb = (fbno - XFS_DIR2_FREE_FIRSTDB(mp)) * xfs_dir3_free_max_bests(mp); - free->hdr.nvalid = 0; - free->hdr.nused = 0; } else { free = fbp->b_addr; bests = xfs_dir3_free_bests_p(mp, free); -- cgit v0.10.2 From 9531e2de6b7f04bd734b4bbc1e16a6955121615a Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:01 +1000 Subject: xfs: remote attribute allocation may be contiguous When CRCs are enabled, there may be multiple allocations made if the headers cause a length overflow. This, however, does not mean that the number of headers required increases, as the second and subsequent extents may be contiguous with the previous extent. Hence when we map the extents to write the attribute data, we may end up with less extents than allocations made. Hence the assertion that we consume the number of headers we calculated in the allocation loop is incorrect and needs to be removed. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 90253cf142469a40f89f989904abf0a1e500e1a6) diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index dee8446..aad95b0 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -359,6 +359,11 @@ xfs_attr_rmtval_set( * into requiring more blocks. e.g. for 512 byte blocks, we'll * spill for another block every 9 headers we require in this * loop. + * + * Note that this can result in contiguous allocation of blocks, + * so we don't use all the space we allocate for headers as we + * have one less header for each contiguous allocation that + * occurs in the map/write loop below. */ if (crcs && blkcnt == 0) { int total_len; @@ -439,7 +444,6 @@ xfs_attr_rmtval_set( lblkno += map.br_blockcount; } ASSERT(valuelen == 0); - ASSERT(hdrcnt == 0); return 0; } -- cgit v0.10.2 From 551b382f5368900d6d82983505cb52553c946a2b Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:02 +1000 Subject: xfs: remote attribute read too short Reading a maximally size remote attribute fails when CRCs are enabled with this verification error: XFS (vdb): remote attribute header does not match required off/len/owner) There are two reasons for this, the first being that the length of the buffer being read is determined from the args->rmtblkcnt which doesn't take into account CRC headers. Hence the mapped length ends up being too short and so we need to calculate it directly from the value length. The second is that the byte count of valid data within a buffer is capped by the length of the data and so doesn't take into account that the buffer might be longer due to headers. Hence we need to calculate the data space in the buffer first before calculating the actual byte count of data. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 913e96bc292e1bb248854686c79d6545ef3ee720) diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index aad95b0..bcdc07c 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -52,9 +52,11 @@ xfs_attr3_rmt_blocks( struct xfs_mount *mp, int attrlen) { - int buflen = XFS_ATTR3_RMT_BUF_SPACE(mp, - mp->m_sb.sb_blocksize); - return (attrlen + buflen - 1) / buflen; + if (xfs_sb_version_hascrc(&mp->m_sb)) { + int buflen = XFS_ATTR3_RMT_BUF_SPACE(mp, mp->m_sb.sb_blocksize); + return (attrlen + buflen - 1) / buflen; + } + return XFS_B_TO_FSB(mp, attrlen); } static bool @@ -206,8 +208,9 @@ xfs_attr_rmtval_get( while (valuelen > 0) { nmap = ATTR_RMTVALUE_MAPSIZE; + blkcnt = xfs_attr3_rmt_blocks(mp, valuelen); error = xfs_bmapi_read(args->dp, (xfs_fileoff_t)lblkno, - args->rmtblkcnt, map, &nmap, + blkcnt, map, &nmap, XFS_BMAPI_ATTRFORK); if (error) return error; @@ -227,8 +230,8 @@ xfs_attr_rmtval_get( if (error) return error; - byte_cnt = min_t(int, valuelen, BBTOB(bp->b_length)); - byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, byte_cnt); + byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, BBTOB(bp->b_length)); + byte_cnt = min_t(int, valuelen, byte_cnt); src = bp->b_addr; if (xfs_sb_version_hascrc(&mp->m_sb)) { -- cgit v0.10.2 From 26f714450c3907ce07c41a0bd1bea40368e0b4da Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:03 +1000 Subject: xfs: remote attribute tail zeroing does too much When an attribute data does not fill then entire remote block, we zero the remaining part of the buffer. This, however, needs to take into account that the buffer has a header, and so the offset where zeroing starts and the length of zeroing need to take this into account. Otherwise we end up with zeros over the end of the attribute value when CRCs are enabled. While there, make sure we only ask to map an extent that covers the remaining range of the attribute, rather than asking every time for the full length of remote data. If the remote attribute blocks are contiguous with other parts of the attribute tree, it will map those blocks as well and we can potentially zero them incorrectly. We can also get buffer size mistmatches when trying to read or remove the remote attribute, and this can lead to not finding the correct buffer when looking it up in cache. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 4af3644c9a53eb2f1ecf69cc53576561b64be4c6) diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index bcdc07c..e207bf0 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -296,10 +296,7 @@ xfs_attr_rmtval_set( * and we may not need that many, so we have to handle this when * allocating the blocks below. */ - if (!crcs) - blkcnt = XFS_B_TO_FSB(mp, args->valuelen); - else - blkcnt = xfs_attr3_rmt_blocks(mp, args->valuelen); + blkcnt = xfs_attr3_rmt_blocks(mp, args->valuelen); error = xfs_bmap_first_unused(args->trans, args->dp, blkcnt, &lfileoff, XFS_ATTR_FORK); @@ -394,8 +391,11 @@ xfs_attr_rmtval_set( */ lblkno = args->rmtblkno; valuelen = args->valuelen; + blkcnt = args->rmtblkcnt; while (valuelen > 0) { int byte_cnt; + int hdr_size; + int dblkcnt; char *buf; /* @@ -404,7 +404,7 @@ xfs_attr_rmtval_set( xfs_bmap_init(args->flist, args->firstblock); nmap = 1; error = xfs_bmapi_read(dp, (xfs_fileoff_t)lblkno, - args->rmtblkcnt, &map, &nmap, + blkcnt, &map, &nmap, XFS_BMAPI_ATTRFORK); if (error) return(error); @@ -413,26 +413,25 @@ xfs_attr_rmtval_set( (map.br_startblock != HOLESTARTBLOCK)); dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock), - blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); + dblkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); - bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt, 0); + bp = xfs_buf_get(mp->m_ddev_targp, dblkno, dblkcnt, 0); if (!bp) return ENOMEM; bp->b_ops = &xfs_attr3_rmt_buf_ops; - - byte_cnt = BBTOB(bp->b_length); - byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, byte_cnt); - if (valuelen < byte_cnt) - byte_cnt = valuelen; - buf = bp->b_addr; - buf += xfs_attr3_rmt_hdr_set(mp, dp->i_ino, offset, + + byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, BBTOB(bp->b_length)); + byte_cnt = min_t(int, valuelen, byte_cnt); + hdr_size = xfs_attr3_rmt_hdr_set(mp, dp->i_ino, offset, byte_cnt, bp); - memcpy(buf, src, byte_cnt); + ASSERT(hdr_size + byte_cnt <= BBTOB(bp->b_length)); - if (byte_cnt < BBTOB(bp->b_length)) - xfs_buf_zero(bp, byte_cnt, - BBTOB(bp->b_length) - byte_cnt); + memcpy(buf + hdr_size, src, byte_cnt); + + if (byte_cnt + hdr_size < BBTOB(bp->b_length)) + xfs_buf_zero(bp, byte_cnt + hdr_size, + BBTOB(bp->b_length) - byte_cnt - hdr_size); error = xfs_bwrite(bp); /* GROT: NOTE: synchronous write */ xfs_buf_relse(bp); @@ -442,9 +441,9 @@ xfs_attr_rmtval_set( src += byte_cnt; valuelen -= byte_cnt; offset += byte_cnt; - hdrcnt--; lblkno += map.br_blockcount; + blkcnt -= map.br_blockcount; } ASSERT(valuelen == 0); return 0; -- cgit v0.10.2 From 58a72281555bf301f6dff24db2db205c87ef8db1 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:04 +1000 Subject: xfs: correctly map remote attr buffers during removal If we don't map the buffers correctly (same as for get/set operations) then the incore buffer lookup will fail. If a block number matches but a length is wrong, then debug kernels will ASSERT fail in _xfs_buf_find() due to the length mismatch. Ensure that we map the buffers correctly by basing the length of the buffer on the attribute data length rather than the remote block count. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 6863ef8449f1908c19f43db572e4474f24a1e9da) diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index e207bf0..d8bcb2d 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -468,19 +468,25 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args) mp = args->dp->i_mount; /* - * Roll through the "value", invalidating the attribute value's - * blocks. + * Roll through the "value", invalidating the attribute value's blocks. + * Note that args->rmtblkcnt is the minimum number of data blocks we'll + * see for a CRC enabled remote attribute. Each extent will have a + * header, and so we may have more blocks than we realise here. If we + * fail to map the blocks correctly, we'll have problems with the buffer + * lookups. */ lblkno = args->rmtblkno; - valuelen = args->rmtblkcnt; + valuelen = args->valuelen; + blkcnt = xfs_attr3_rmt_blocks(mp, valuelen); while (valuelen > 0) { + int dblkcnt; + /* * Try to remember where we decided to put the value. */ nmap = 1; error = xfs_bmapi_read(args->dp, (xfs_fileoff_t)lblkno, - args->rmtblkcnt, &map, &nmap, - XFS_BMAPI_ATTRFORK); + blkcnt, &map, &nmap, XFS_BMAPI_ATTRFORK); if (error) return(error); ASSERT(nmap == 1); @@ -488,28 +494,31 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args) (map.br_startblock != HOLESTARTBLOCK)); dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock), - blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); + dblkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); /* * If the "remote" value is in the cache, remove it. */ - bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, XBF_TRYLOCK); + bp = xfs_incore(mp->m_ddev_targp, dblkno, dblkcnt, XBF_TRYLOCK); if (bp) { xfs_buf_stale(bp); xfs_buf_relse(bp); bp = NULL; } - valuelen -= map.br_blockcount; + valuelen -= XFS_ATTR3_RMT_BUF_SPACE(mp, + XFS_FSB_TO_B(mp, map.br_blockcount)); lblkno += map.br_blockcount; + blkcnt -= map.br_blockcount; + blkcnt = max(blkcnt, xfs_attr3_rmt_blocks(mp, valuelen)); } /* * Keep de-allocating extents until the remote-value region is gone. */ + blkcnt = lblkno - args->rmtblkno; lblkno = args->rmtblkno; - blkcnt = args->rmtblkcnt; done = 0; while (!done) { xfs_bmap_init(args->flist, args->firstblock); -- cgit v0.10.2 From 9e80c76205b46b338cb56c336148f54b2326342f Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:05 +1000 Subject: xfs: fully initialise temp leaf in xfs_attr3_leaf_unbalance xfs_attr3_leaf_unbalance() uses a temporary buffer for recombining the entries in two leaves when the destination leaf requires compaction. The temporary buffer ends up being copied back over the original destination buffer, so the header in the temporary buffer needs to contain all the information that is in the destination buffer. To make sure the temporary buffer is fully initialised, once we've set up the temporary incore header appropriately, write is back to the temporary buffer before starting to move entries around. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 8517de2a81da830f5d90da66b4799f4040c76dc9) diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index 0bce1b3..79ece72 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -2181,14 +2181,24 @@ xfs_attr3_leaf_unbalance( struct xfs_attr_leafblock *tmp_leaf; struct xfs_attr3_icleaf_hdr tmphdr; - tmp_leaf = kmem_alloc(state->blocksize, KM_SLEEP); - memset(tmp_leaf, 0, state->blocksize); - memset(&tmphdr, 0, sizeof(tmphdr)); + tmp_leaf = kmem_zalloc(state->blocksize, KM_SLEEP); + + /* + * Copy the header into the temp leaf so that all the stuff + * not in the incore header is present and gets copied back in + * once we've moved all the entries. + */ + memcpy(tmp_leaf, save_leaf, xfs_attr3_leaf_hdr_size(save_leaf)); + memset(&tmphdr, 0, sizeof(tmphdr)); tmphdr.magic = savehdr.magic; tmphdr.forw = savehdr.forw; tmphdr.back = savehdr.back; tmphdr.firstused = state->blocksize; + + /* write the header to the temp buffer to initialise it */ + xfs_attr3_leaf_hdr_to_disk(tmp_leaf, &tmphdr); + if (xfs_attr3_leaf_order(save_blk->bp, &savehdr, drop_blk->bp, &drophdr)) { xfs_attr3_leaf_moveents(drop_leaf, &drophdr, 0, -- cgit v0.10.2 From 634fd5322a3e6ae632dcf5f20eebc0583ba50838 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:06 +1000 Subject: xfs: fully initialise temp leaf in xfs_attr3_leaf_compact xfs_attr3_leaf_compact() uses a temporary buffer for compacting the the entries in a leaf. It copies the the original buffer into the temporary buffer, then zeros the original buffer completely. It then copies the entries back into the original buffer. However, the original buffer has not been correctly initialised, and so the movement of the entries goes horribly wrong. Make sure the zeroed destination buffer is fully initialised, and once we've set up the destination incore header appropriately, write is back to the buffer before starting to move entries around. While debugging this, the _d/_s prefixes weren't sufficient to remind me what buffer was what, so rename then all _src/_dst. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit d4c712bcf26a25c2b67c90e44e0b74c7993b5334) diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index 79ece72..5b03d15 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -1445,11 +1445,12 @@ xfs_attr3_leaf_add_work( STATIC void xfs_attr3_leaf_compact( struct xfs_da_args *args, - struct xfs_attr3_icleaf_hdr *ichdr_d, + struct xfs_attr3_icleaf_hdr *ichdr_dst, struct xfs_buf *bp) { - xfs_attr_leafblock_t *leaf_s, *leaf_d; - struct xfs_attr3_icleaf_hdr ichdr_s; + struct xfs_attr_leafblock *leaf_src; + struct xfs_attr_leafblock *leaf_dst; + struct xfs_attr3_icleaf_hdr ichdr_src; struct xfs_trans *trans = args->trans; struct xfs_mount *mp = trans->t_mountp; char *tmpbuffer; @@ -1457,29 +1458,38 @@ xfs_attr3_leaf_compact( trace_xfs_attr_leaf_compact(args); tmpbuffer = kmem_alloc(XFS_LBSIZE(mp), KM_SLEEP); - ASSERT(tmpbuffer != NULL); memcpy(tmpbuffer, bp->b_addr, XFS_LBSIZE(mp)); memset(bp->b_addr, 0, XFS_LBSIZE(mp)); + leaf_src = (xfs_attr_leafblock_t *)tmpbuffer; + leaf_dst = bp->b_addr; /* - * Copy basic information + * Copy the on-disk header back into the destination buffer to ensure + * all the information in the header that is not part of the incore + * header structure is preserved. */ - leaf_s = (xfs_attr_leafblock_t *)tmpbuffer; - leaf_d = bp->b_addr; - ichdr_s = *ichdr_d; /* struct copy */ - ichdr_d->firstused = XFS_LBSIZE(mp); - ichdr_d->usedbytes = 0; - ichdr_d->count = 0; - ichdr_d->holes = 0; - ichdr_d->freemap[0].base = xfs_attr3_leaf_hdr_size(leaf_s); - ichdr_d->freemap[0].size = ichdr_d->firstused - ichdr_d->freemap[0].base; + memcpy(bp->b_addr, tmpbuffer, xfs_attr3_leaf_hdr_size(leaf_src)); + + /* Initialise the incore headers */ + ichdr_src = *ichdr_dst; /* struct copy */ + ichdr_dst->firstused = XFS_LBSIZE(mp); + ichdr_dst->usedbytes = 0; + ichdr_dst->count = 0; + ichdr_dst->holes = 0; + ichdr_dst->freemap[0].base = xfs_attr3_leaf_hdr_size(leaf_src); + ichdr_dst->freemap[0].size = ichdr_dst->firstused - + ichdr_dst->freemap[0].base; + + + /* write the header back to initialise the underlying buffer */ + xfs_attr3_leaf_hdr_to_disk(leaf_dst, ichdr_dst); /* * Copy all entry's in the same (sorted) order, * but allocate name/value pairs packed and in sequence. */ - xfs_attr3_leaf_moveents(leaf_s, &ichdr_s, 0, leaf_d, ichdr_d, 0, - ichdr_s.count, mp); + xfs_attr3_leaf_moveents(leaf_src, &ichdr_src, 0, leaf_dst, ichdr_dst, 0, + ichdr_src.count, mp); /* * this logs the entire buffer, but the caller must write the header * back to the buffer when it is finished modifying it. -- cgit v0.10.2 From 7bc0dc271e494e12be3afd3c6431e5216347c624 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 21 May 2013 18:02:08 +1000 Subject: xfs: rework remote attr CRCs Note: this changes the on-disk remote attribute format. I assert that this is OK to do as CRCs are marked experimental and the first kernel it is included in has not yet reached release yet. Further, the userspace utilities are still evolving and so anyone using this stuff right now is a developer or tester using volatile filesystems for testing this feature. Hence changing the format right now to save longer term pain is the right thing to do. The fundamental change is to move from a header per extent in the attribute to a header per filesytem block in the attribute. This means there are more header blocks and the parsing of the attribute data is slightly more complex, but it has the advantage that we always know the size of the attribute on disk based on the length of the data it contains. This is where the header-per-extent method has problems. We don't know the size of the attribute on disk without first knowing how many extents are used to hold it. And we can't tell from a mapping lookup, either, because remote attributes can be allocated contiguously with other attribute blocks and so there is no obvious way of determining the actual size of the atribute on disk short of walking and mapping buffers. The problem with this approach is that if we map a buffer incorrectly (e.g. we make the last buffer for the attribute data too long), we then get buffer cache lookup failure when we map it correctly. i.e. we get a size mismatch on lookup. This is not necessarily fatal, but it's a cache coherency problem that can lead to returning the wrong data to userspace or writing the wrong data to disk. And debug kernels will assert fail if this occurs. I found lots of niggly little problems trying to fix this issue on a 4k block size filesystem, finally getting it to pass with lots of fixes. The thing is, 1024 byte filesystems still failed, and it was getting really complex handling all the corner cases that were showing up. And there were clearly more that I hadn't found yet. It is complex, fragile code, and if we don't fix it now, it will be complex, fragile code forever more. Hence the simple fix is to add a header to each filesystem block. This gives us the same relationship between the attribute data length and the number of blocks on disk as we have without CRCs - it's a linear mapping and doesn't require us to guess anything. It is simple to implement, too - the remote block count calculated at lookup time can be used by the remote attribute set/get/remove code without modification for both CRC and non-CRC filesystems. The world becomes sane again. Because the copy-in and copy-out now need to iterate over each filesystem block, I moved them into helper functions so we separate the block mapping and buffer manupulations from the attribute data and CRC header manipulations. The code becomes much clearer as a result, and it is a lot easier to understand and debug. It also appears to be much more robust - once it worked on 4k block size filesystems, it has worked without failure on 1k block size filesystems, too. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit ad1858d77771172e08016890f0eb2faedec3ecee) diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index 5b03d15..d788302 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -1412,7 +1412,7 @@ xfs_attr3_leaf_add_work( name_rmt->valuelen = 0; name_rmt->valueblk = 0; args->rmtblkno = 1; - args->rmtblkcnt = XFS_B_TO_FSB(mp, args->valuelen); + args->rmtblkcnt = xfs_attr3_rmt_blocks(mp, args->valuelen); } xfs_trans_log_buf(args->trans, bp, XFS_DA_LOGRANGE(leaf, xfs_attr3_leaf_name(leaf, args->index), @@ -2354,8 +2354,9 @@ xfs_attr3_leaf_lookup_int( args->index = probe; args->valuelen = be32_to_cpu(name_rmt->valuelen); args->rmtblkno = be32_to_cpu(name_rmt->valueblk); - args->rmtblkcnt = XFS_B_TO_FSB(args->dp->i_mount, - args->valuelen); + args->rmtblkcnt = xfs_attr3_rmt_blocks( + args->dp->i_mount, + args->valuelen); return XFS_ERROR(EEXIST); } } @@ -2406,7 +2407,8 @@ xfs_attr3_leaf_getvalue( ASSERT(memcmp(args->name, name_rmt->name, args->namelen) == 0); valuelen = be32_to_cpu(name_rmt->valuelen); args->rmtblkno = be32_to_cpu(name_rmt->valueblk); - args->rmtblkcnt = XFS_B_TO_FSB(args->dp->i_mount, valuelen); + args->rmtblkcnt = xfs_attr3_rmt_blocks(args->dp->i_mount, + valuelen); if (args->flags & ATTR_KERNOVAL) { args->valuelen = valuelen; return 0; @@ -2732,7 +2734,8 @@ xfs_attr3_leaf_list_int( args.valuelen = valuelen; args.value = kmem_alloc(valuelen, KM_SLEEP | KM_NOFS); args.rmtblkno = be32_to_cpu(name_rmt->valueblk); - args.rmtblkcnt = XFS_B_TO_FSB(args.dp->i_mount, valuelen); + args.rmtblkcnt = xfs_attr3_rmt_blocks( + args.dp->i_mount, valuelen); retval = xfs_attr_rmtval_get(&args); if (retval) return retval; diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index d8bcb2d..ef6b0c1 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -47,7 +47,7 @@ * Each contiguous block has a header, so it is not just a simple attribute * length to FSB conversion. */ -static int +int xfs_attr3_rmt_blocks( struct xfs_mount *mp, int attrlen) @@ -59,12 +59,43 @@ xfs_attr3_rmt_blocks( return XFS_B_TO_FSB(mp, attrlen); } +/* + * Checking of the remote attribute header is split into two parts. The verifier + * does CRC, location and bounds checking, the unpacking function checks the + * attribute parameters and owner. + */ +static bool +xfs_attr3_rmt_hdr_ok( + struct xfs_mount *mp, + void *ptr, + xfs_ino_t ino, + uint32_t offset, + uint32_t size, + xfs_daddr_t bno) +{ + struct xfs_attr3_rmt_hdr *rmt = ptr; + + if (bno != be64_to_cpu(rmt->rm_blkno)) + return false; + if (offset != be32_to_cpu(rmt->rm_offset)) + return false; + if (size != be32_to_cpu(rmt->rm_bytes)) + return false; + if (ino != be64_to_cpu(rmt->rm_owner)) + return false; + + /* ok */ + return true; +} + static bool xfs_attr3_rmt_verify( - struct xfs_buf *bp) + struct xfs_mount *mp, + void *ptr, + int fsbsize, + xfs_daddr_t bno) { - struct xfs_mount *mp = bp->b_target->bt_mount; - struct xfs_attr3_rmt_hdr *rmt = bp->b_addr; + struct xfs_attr3_rmt_hdr *rmt = ptr; if (!xfs_sb_version_hascrc(&mp->m_sb)) return false; @@ -72,7 +103,9 @@ xfs_attr3_rmt_verify( return false; if (!uuid_equal(&rmt->rm_uuid, &mp->m_sb.sb_uuid)) return false; - if (bp->b_bn != be64_to_cpu(rmt->rm_blkno)) + if (be64_to_cpu(rmt->rm_blkno) != bno) + return false; + if (be32_to_cpu(rmt->rm_bytes) > fsbsize - sizeof(*rmt)) return false; if (be32_to_cpu(rmt->rm_offset) + be32_to_cpu(rmt->rm_bytes) >= XATTR_SIZE_MAX) @@ -88,17 +121,40 @@ xfs_attr3_rmt_read_verify( struct xfs_buf *bp) { struct xfs_mount *mp = bp->b_target->bt_mount; + char *ptr; + int len; + bool corrupt = false; + xfs_daddr_t bno; /* no verification of non-crc buffers */ if (!xfs_sb_version_hascrc(&mp->m_sb)) return; - if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_ATTR3_RMT_CRC_OFF) || - !xfs_attr3_rmt_verify(bp)) { + ptr = bp->b_addr; + bno = bp->b_bn; + len = BBTOB(bp->b_length); + ASSERT(len >= XFS_LBSIZE(mp)); + + while (len > 0) { + if (!xfs_verify_cksum(ptr, XFS_LBSIZE(mp), + XFS_ATTR3_RMT_CRC_OFF)) { + corrupt = true; + break; + } + if (!xfs_attr3_rmt_verify(mp, ptr, XFS_LBSIZE(mp), bno)) { + corrupt = true; + break; + } + len -= XFS_LBSIZE(mp); + ptr += XFS_LBSIZE(mp); + bno += mp->m_bsize; + } + + if (corrupt) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); - } + } else + ASSERT(len == 0); } static void @@ -107,23 +163,39 @@ xfs_attr3_rmt_write_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; struct xfs_buf_log_item *bip = bp->b_fspriv; + char *ptr; + int len; + xfs_daddr_t bno; /* no verification of non-crc buffers */ if (!xfs_sb_version_hascrc(&mp->m_sb)) return; - if (!xfs_attr3_rmt_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); - xfs_buf_ioerror(bp, EFSCORRUPTED); - return; - } + ptr = bp->b_addr; + bno = bp->b_bn; + len = BBTOB(bp->b_length); + ASSERT(len >= XFS_LBSIZE(mp)); + + while (len > 0) { + if (!xfs_attr3_rmt_verify(mp, ptr, XFS_LBSIZE(mp), bno)) { + XFS_CORRUPTION_ERROR(__func__, + XFS_ERRLEVEL_LOW, mp, bp->b_addr); + xfs_buf_ioerror(bp, EFSCORRUPTED); + return; + } + if (bip) { + struct xfs_attr3_rmt_hdr *rmt; - if (bip) { - struct xfs_attr3_rmt_hdr *rmt = bp->b_addr; - rmt->rm_lsn = cpu_to_be64(bip->bli_item.li_lsn); + rmt = (struct xfs_attr3_rmt_hdr *)ptr; + rmt->rm_lsn = cpu_to_be64(bip->bli_item.li_lsn); + } + xfs_update_cksum(ptr, XFS_LBSIZE(mp), XFS_ATTR3_RMT_CRC_OFF); + + len -= XFS_LBSIZE(mp); + ptr += XFS_LBSIZE(mp); + bno += mp->m_bsize; } - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_ATTR3_RMT_CRC_OFF); + ASSERT(len == 0); } const struct xfs_buf_ops xfs_attr3_rmt_buf_ops = { @@ -131,15 +203,16 @@ const struct xfs_buf_ops xfs_attr3_rmt_buf_ops = { .verify_write = xfs_attr3_rmt_write_verify, }; -static int +STATIC int xfs_attr3_rmt_hdr_set( struct xfs_mount *mp, + void *ptr, xfs_ino_t ino, uint32_t offset, uint32_t size, - struct xfs_buf *bp) + xfs_daddr_t bno) { - struct xfs_attr3_rmt_hdr *rmt = bp->b_addr; + struct xfs_attr3_rmt_hdr *rmt = ptr; if (!xfs_sb_version_hascrc(&mp->m_sb)) return 0; @@ -149,36 +222,107 @@ xfs_attr3_rmt_hdr_set( rmt->rm_bytes = cpu_to_be32(size); uuid_copy(&rmt->rm_uuid, &mp->m_sb.sb_uuid); rmt->rm_owner = cpu_to_be64(ino); - rmt->rm_blkno = cpu_to_be64(bp->b_bn); - bp->b_ops = &xfs_attr3_rmt_buf_ops; + rmt->rm_blkno = cpu_to_be64(bno); return sizeof(struct xfs_attr3_rmt_hdr); } /* - * Checking of the remote attribute header is split into two parts. the verifier - * does CRC, location and bounds checking, the unpacking function checks the - * attribute parameters and owner. + * Helper functions to copy attribute data in and out of the one disk extents */ -static bool -xfs_attr3_rmt_hdr_ok( - struct xfs_mount *mp, - xfs_ino_t ino, - uint32_t offset, - uint32_t size, - struct xfs_buf *bp) +STATIC int +xfs_attr_rmtval_copyout( + struct xfs_mount *mp, + struct xfs_buf *bp, + xfs_ino_t ino, + int *offset, + int *valuelen, + char **dst) { - struct xfs_attr3_rmt_hdr *rmt = bp->b_addr; + char *src = bp->b_addr; + xfs_daddr_t bno = bp->b_bn; + int len = BBTOB(bp->b_length); - if (offset != be32_to_cpu(rmt->rm_offset)) - return false; - if (size != be32_to_cpu(rmt->rm_bytes)) - return false; - if (ino != be64_to_cpu(rmt->rm_owner)) - return false; + ASSERT(len >= XFS_LBSIZE(mp)); - /* ok */ - return true; + while (len > 0 && *valuelen > 0) { + int hdr_size = 0; + int byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, XFS_LBSIZE(mp)); + + byte_cnt = min_t(int, *valuelen, byte_cnt); + + if (xfs_sb_version_hascrc(&mp->m_sb)) { + if (!xfs_attr3_rmt_hdr_ok(mp, src, ino, *offset, + byte_cnt, bno)) { + xfs_alert(mp, +"remote attribute header mismatch bno/off/len/owner (0x%llx/0x%x/Ox%x/0x%llx)", + bno, *offset, byte_cnt, ino); + return EFSCORRUPTED; + } + hdr_size = sizeof(struct xfs_attr3_rmt_hdr); + } + + memcpy(*dst, src + hdr_size, byte_cnt); + + /* roll buffer forwards */ + len -= XFS_LBSIZE(mp); + src += XFS_LBSIZE(mp); + bno += mp->m_bsize; + + /* roll attribute data forwards */ + *valuelen -= byte_cnt; + *dst += byte_cnt; + *offset += byte_cnt; + } + return 0; +} + +STATIC void +xfs_attr_rmtval_copyin( + struct xfs_mount *mp, + struct xfs_buf *bp, + xfs_ino_t ino, + int *offset, + int *valuelen, + char **src) +{ + char *dst = bp->b_addr; + xfs_daddr_t bno = bp->b_bn; + int len = BBTOB(bp->b_length); + + ASSERT(len >= XFS_LBSIZE(mp)); + + while (len > 0 && *valuelen > 0) { + int hdr_size; + int byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, XFS_LBSIZE(mp)); + + byte_cnt = min(*valuelen, byte_cnt); + hdr_size = xfs_attr3_rmt_hdr_set(mp, dst, ino, *offset, + byte_cnt, bno); + + memcpy(dst + hdr_size, *src, byte_cnt); + + /* + * If this is the last block, zero the remainder of it. + * Check that we are actually the last block, too. + */ + if (byte_cnt + hdr_size < XFS_LBSIZE(mp)) { + ASSERT(*valuelen - byte_cnt == 0); + ASSERT(len == XFS_LBSIZE(mp)); + memset(dst + hdr_size + byte_cnt, 0, + XFS_LBSIZE(mp) - hdr_size - byte_cnt); + } + + /* roll buffer forwards */ + len -= XFS_LBSIZE(mp); + dst += XFS_LBSIZE(mp); + bno += mp->m_bsize; + + /* roll attribute data forwards */ + *valuelen -= byte_cnt; + *src += byte_cnt; + *offset += byte_cnt; + } } /* @@ -192,13 +336,12 @@ xfs_attr_rmtval_get( struct xfs_bmbt_irec map[ATTR_RMTVALUE_MAPSIZE]; struct xfs_mount *mp = args->dp->i_mount; struct xfs_buf *bp; - xfs_daddr_t dblkno; xfs_dablk_t lblkno = args->rmtblkno; - void *dst = args->value; + char *dst = args->value; int valuelen = args->valuelen; int nmap; int error; - int blkcnt; + int blkcnt = args->rmtblkcnt; int i; int offset = 0; @@ -208,7 +351,6 @@ xfs_attr_rmtval_get( while (valuelen > 0) { nmap = ATTR_RMTVALUE_MAPSIZE; - blkcnt = xfs_attr3_rmt_blocks(mp, valuelen); error = xfs_bmapi_read(args->dp, (xfs_fileoff_t)lblkno, blkcnt, map, &nmap, XFS_BMAPI_ATTRFORK); @@ -217,45 +359,29 @@ xfs_attr_rmtval_get( ASSERT(nmap >= 1); for (i = 0; (i < nmap) && (valuelen > 0); i++) { - int byte_cnt; - char *src; + xfs_daddr_t dblkno; + int dblkcnt; ASSERT((map[i].br_startblock != DELAYSTARTBLOCK) && (map[i].br_startblock != HOLESTARTBLOCK)); dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock); - blkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount); + dblkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount); error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, - dblkno, blkcnt, 0, &bp, + dblkno, dblkcnt, 0, &bp, &xfs_attr3_rmt_buf_ops); if (error) return error; - byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, BBTOB(bp->b_length)); - byte_cnt = min_t(int, valuelen, byte_cnt); - - src = bp->b_addr; - if (xfs_sb_version_hascrc(&mp->m_sb)) { - if (!xfs_attr3_rmt_hdr_ok(mp, args->dp->i_ino, - offset, byte_cnt, bp)) { - xfs_alert(mp, -"remote attribute header does not match required off/len/owner (0x%x/Ox%x,0x%llx)", - offset, byte_cnt, args->dp->i_ino); - xfs_buf_relse(bp); - return EFSCORRUPTED; - - } - - src += sizeof(struct xfs_attr3_rmt_hdr); - } - - memcpy(dst, src, byte_cnt); + error = xfs_attr_rmtval_copyout(mp, bp, args->dp->i_ino, + &offset, &valuelen, + &dst); xfs_buf_relse(bp); + if (error) + return error; - offset += byte_cnt; - dst += byte_cnt; - valuelen -= byte_cnt; - + /* roll attribute extent map forwards */ lblkno += map[i].br_blockcount; + blkcnt -= map[i].br_blockcount; } } ASSERT(valuelen == 0); @@ -273,17 +399,13 @@ xfs_attr_rmtval_set( struct xfs_inode *dp = args->dp; struct xfs_mount *mp = dp->i_mount; struct xfs_bmbt_irec map; - struct xfs_buf *bp; - xfs_daddr_t dblkno; xfs_dablk_t lblkno; xfs_fileoff_t lfileoff = 0; - void *src = args->value; + char *src = args->value; int blkcnt; int valuelen; int nmap; int error; - int hdrcnt = 0; - bool crcs = xfs_sb_version_hascrc(&mp->m_sb); int offset = 0; trace_xfs_attr_rmtval_set(args); @@ -292,21 +414,14 @@ xfs_attr_rmtval_set( * Find a "hole" in the attribute address space large enough for * us to drop the new attribute's value into. Because CRC enable * attributes have headers, we can't just do a straight byte to FSB - * conversion. We calculate the worst case block count in this case - * and we may not need that many, so we have to handle this when - * allocating the blocks below. + * conversion and have to take the header space into account. */ blkcnt = xfs_attr3_rmt_blocks(mp, args->valuelen); - error = xfs_bmap_first_unused(args->trans, args->dp, blkcnt, &lfileoff, XFS_ATTR_FORK); if (error) return error; - /* Start with the attribute data. We'll allocate the rest afterwards. */ - if (crcs) - blkcnt = XFS_B_TO_FSB(mp, args->valuelen); - args->rmtblkno = lblkno = (xfs_dablk_t)lfileoff; args->rmtblkcnt = blkcnt; @@ -349,31 +464,6 @@ xfs_attr_rmtval_set( (map.br_startblock != HOLESTARTBLOCK)); lblkno += map.br_blockcount; blkcnt -= map.br_blockcount; - hdrcnt++; - - /* - * If we have enough blocks for the attribute data, calculate - * how many extra blocks we need for headers. We might run - * through this multiple times in the case that the additional - * headers in the blocks needed for the data fragments spills - * into requiring more blocks. e.g. for 512 byte blocks, we'll - * spill for another block every 9 headers we require in this - * loop. - * - * Note that this can result in contiguous allocation of blocks, - * so we don't use all the space we allocate for headers as we - * have one less header for each contiguous allocation that - * occurs in the map/write loop below. - */ - if (crcs && blkcnt == 0) { - int total_len; - - total_len = args->valuelen + - hdrcnt * sizeof(struct xfs_attr3_rmt_hdr); - blkcnt = XFS_B_TO_FSB(mp, total_len); - blkcnt -= args->rmtblkcnt; - args->rmtblkcnt += blkcnt; - } /* * Start the next trans in the chain. @@ -390,17 +480,15 @@ xfs_attr_rmtval_set( * the INCOMPLETE flag. */ lblkno = args->rmtblkno; - valuelen = args->valuelen; blkcnt = args->rmtblkcnt; + valuelen = args->valuelen; while (valuelen > 0) { - int byte_cnt; - int hdr_size; - int dblkcnt; - char *buf; + struct xfs_buf *bp; + xfs_daddr_t dblkno; + int dblkcnt; + + ASSERT(blkcnt > 0); - /* - * Try to remember where we decided to put the value. - */ xfs_bmap_init(args->flist, args->firstblock); nmap = 1; error = xfs_bmapi_read(dp, (xfs_fileoff_t)lblkno, @@ -419,29 +507,17 @@ xfs_attr_rmtval_set( if (!bp) return ENOMEM; bp->b_ops = &xfs_attr3_rmt_buf_ops; - buf = bp->b_addr; - - byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, BBTOB(bp->b_length)); - byte_cnt = min_t(int, valuelen, byte_cnt); - hdr_size = xfs_attr3_rmt_hdr_set(mp, dp->i_ino, offset, - byte_cnt, bp); - ASSERT(hdr_size + byte_cnt <= BBTOB(bp->b_length)); - memcpy(buf + hdr_size, src, byte_cnt); - - if (byte_cnt + hdr_size < BBTOB(bp->b_length)) - xfs_buf_zero(bp, byte_cnt + hdr_size, - BBTOB(bp->b_length) - byte_cnt - hdr_size); + xfs_attr_rmtval_copyin(mp, bp, args->dp->i_ino, &offset, + &valuelen, &src); error = xfs_bwrite(bp); /* GROT: NOTE: synchronous write */ xfs_buf_relse(bp); if (error) return error; - src += byte_cnt; - valuelen -= byte_cnt; - offset += byte_cnt; + /* roll attribute extent map forwards */ lblkno += map.br_blockcount; blkcnt -= map.br_blockcount; } @@ -454,19 +530,17 @@ xfs_attr_rmtval_set( * out-of-line buffer that it is stored on. */ int -xfs_attr_rmtval_remove(xfs_da_args_t *args) +xfs_attr_rmtval_remove( + struct xfs_da_args *args) { - xfs_mount_t *mp; - xfs_bmbt_irec_t map; - xfs_buf_t *bp; - xfs_daddr_t dblkno; - xfs_dablk_t lblkno; - int valuelen, blkcnt, nmap, error, done, committed; + struct xfs_mount *mp = args->dp->i_mount; + xfs_dablk_t lblkno; + int blkcnt; + int error; + int done; trace_xfs_attr_rmtval_remove(args); - mp = args->dp->i_mount; - /* * Roll through the "value", invalidating the attribute value's blocks. * Note that args->rmtblkcnt is the minimum number of data blocks we'll @@ -476,10 +550,13 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args) * lookups. */ lblkno = args->rmtblkno; - valuelen = args->valuelen; - blkcnt = xfs_attr3_rmt_blocks(mp, valuelen); - while (valuelen > 0) { - int dblkcnt; + blkcnt = args->rmtblkcnt; + while (blkcnt > 0) { + struct xfs_bmbt_irec map; + struct xfs_buf *bp; + xfs_daddr_t dblkno; + int dblkcnt; + int nmap; /* * Try to remember where we decided to put the value. @@ -506,21 +583,19 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args) bp = NULL; } - valuelen -= XFS_ATTR3_RMT_BUF_SPACE(mp, - XFS_FSB_TO_B(mp, map.br_blockcount)); - lblkno += map.br_blockcount; blkcnt -= map.br_blockcount; - blkcnt = max(blkcnt, xfs_attr3_rmt_blocks(mp, valuelen)); } /* * Keep de-allocating extents until the remote-value region is gone. */ - blkcnt = lblkno - args->rmtblkno; lblkno = args->rmtblkno; + blkcnt = args->rmtblkcnt; done = 0; while (!done) { + int committed; + xfs_bmap_init(args->flist, args->firstblock); error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt, XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA, diff --git a/fs/xfs/xfs_attr_remote.h b/fs/xfs/xfs_attr_remote.h index c7cca60..92a8fd7 100644 --- a/fs/xfs/xfs_attr_remote.h +++ b/fs/xfs/xfs_attr_remote.h @@ -20,6 +20,14 @@ #define XFS_ATTR3_RMT_MAGIC 0x5841524d /* XARM */ +/* + * There is one of these headers per filesystem block in a remote attribute. + * This is done to ensure there is a 1:1 mapping between the attribute value + * length and the number of blocks needed to store the attribute. This makes the + * verification of a buffer a little more complex, but greatly simplifies the + * allocation, reading and writing of these attributes as we don't have to guess + * the number of blocks needed to store the attribute data. + */ struct xfs_attr3_rmt_hdr { __be32 rm_magic; __be32 rm_offset; @@ -39,6 +47,8 @@ struct xfs_attr3_rmt_hdr { extern const struct xfs_buf_ops xfs_attr3_rmt_buf_ops; +int xfs_attr3_rmt_blocks(struct xfs_mount *mp, int attrlen); + int xfs_attr_rmtval_get(struct xfs_da_args *args); int xfs_attr_rmtval_set(struct xfs_da_args *args); int xfs_attr_rmtval_remove(struct xfs_da_args *args); diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 0d25542..1b2472a 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -513,6 +513,7 @@ _xfs_buf_find( xfs_alert(btp->bt_mount, "%s: Block out of range: block 0x%llx, EOFS 0x%llx ", __func__, blkno, eofs); + WARN_ON(1); return NULL; } -- cgit v0.10.2 From 2baad6121e2b2fa3428ee6cb2298107be11ab23a Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 29 May 2013 13:43:54 +0100 Subject: x86, crc32-pclmul: Fix build with older binutils binutils prior to 2.18 (e.g. the ones found on SLE10) don't support assembling PEXTRD, so a macro based approach like the one for PCLMULQDQ in the same file should be used. This requires making the helper macros capable of recognizing 32-bit general purpose register operands. [ hpa: tagging for stable as it is a low risk build fix ] Signed-off-by: Jan Beulich Link: http://lkml.kernel.org/r/51A6142A02000078000D99D8@nat28.tlf.novell.com Cc: Alexander Boyko Cc: Herbert Xu Cc: Huang Ying Cc: v3.9 Signed-off-by: H. Peter Anvin diff --git a/arch/x86/crypto/crc32-pclmul_asm.S b/arch/x86/crypto/crc32-pclmul_asm.S index 94c27df..f247304 100644 --- a/arch/x86/crypto/crc32-pclmul_asm.S +++ b/arch/x86/crypto/crc32-pclmul_asm.S @@ -240,7 +240,7 @@ fold_64: pand %xmm3, %xmm1 PCLMULQDQ 0x00, CONSTANT, %xmm1 pxor %xmm2, %xmm1 - pextrd $0x01, %xmm1, %eax + PEXTRD 0x01, %xmm1, %eax ret ENDPROC(crc32_pclmul_le_16) diff --git a/arch/x86/include/asm/inst.h b/arch/x86/include/asm/inst.h index 280bf7f..3e11527 100644 --- a/arch/x86/include/asm/inst.h +++ b/arch/x86/include/asm/inst.h @@ -9,12 +9,68 @@ #define REG_NUM_INVALID 100 -#define REG_TYPE_R64 0 -#define REG_TYPE_XMM 1 +#define REG_TYPE_R32 0 +#define REG_TYPE_R64 1 +#define REG_TYPE_XMM 2 #define REG_TYPE_INVALID 100 + .macro R32_NUM opd r32 + \opd = REG_NUM_INVALID + .ifc \r32,%eax + \opd = 0 + .endif + .ifc \r32,%ecx + \opd = 1 + .endif + .ifc \r32,%edx + \opd = 2 + .endif + .ifc \r32,%ebx + \opd = 3 + .endif + .ifc \r32,%esp + \opd = 4 + .endif + .ifc \r32,%ebp + \opd = 5 + .endif + .ifc \r32,%esi + \opd = 6 + .endif + .ifc \r32,%edi + \opd = 7 + .endif +#ifdef CONFIG_X86_64 + .ifc \r32,%r8d + \opd = 8 + .endif + .ifc \r32,%r9d + \opd = 9 + .endif + .ifc \r32,%r10d + \opd = 10 + .endif + .ifc \r32,%r11d + \opd = 11 + .endif + .ifc \r32,%r12d + \opd = 12 + .endif + .ifc \r32,%r13d + \opd = 13 + .endif + .ifc \r32,%r14d + \opd = 14 + .endif + .ifc \r32,%r15d + \opd = 15 + .endif +#endif + .endm + .macro R64_NUM opd r64 \opd = REG_NUM_INVALID +#ifdef CONFIG_X86_64 .ifc \r64,%rax \opd = 0 .endif @@ -63,6 +119,7 @@ .ifc \r64,%r15 \opd = 15 .endif +#endif .endm .macro XMM_NUM opd xmm @@ -118,10 +175,13 @@ .endm .macro REG_TYPE type reg + R32_NUM reg_type_r32 \reg R64_NUM reg_type_r64 \reg XMM_NUM reg_type_xmm \reg .if reg_type_r64 <> REG_NUM_INVALID \type = REG_TYPE_R64 + .elseif reg_type_r32 <> REG_NUM_INVALID + \type = REG_TYPE_R32 .elseif reg_type_xmm <> REG_NUM_INVALID \type = REG_TYPE_XMM .else @@ -162,6 +222,16 @@ .byte \imm8 .endm + .macro PEXTRD imm8 xmm gpr + R32_NUM extrd_opd1 \gpr + XMM_NUM extrd_opd2 \xmm + PFX_OPD_SIZE + PFX_REX extrd_opd1 extrd_opd2 + .byte 0x0f, 0x3a, 0x16 + MODRM 0xc0 extrd_opd1 extrd_opd2 + .byte \imm8 + .endm + .macro AESKEYGENASSIST rcon xmm1 xmm2 XMM_NUM aeskeygen_opd1 \xmm1 XMM_NUM aeskeygen_opd2 \xmm2 -- cgit v0.10.2 From 5187b28ff08249ab8a162e802209ed04e271ca02 Mon Sep 17 00:00:00 2001 From: Pekka Riikonen Date: Mon, 13 May 2013 14:32:07 +0200 Subject: x86: Allow FPU to be used at interrupt time even with eagerfpu With the addition of eagerfpu the irq_fpu_usable() now returns false negatives especially in the case of ksoftirqd and interrupted idle task, two common cases for FPU use for example in networking/crypto. With eagerfpu=off FPU use is possible in those contexts. This is because of the eagerfpu check in interrupted_kernel_fpu_idle(): ... * For now, with eagerfpu we will return interrupted kernel FPU * state as not-idle. TBD: Ideally we can change the return value * to something like __thread_has_fpu(current). But we need to * be careful of doing __thread_clear_has_fpu() before saving * the FPU etc for supporting nested uses etc. For now, take * the simple route! ... if (use_eager_fpu()) return 0; As eagerfpu is automatically "on" on those CPUs that also have the features like AES-NI this patch changes the eagerfpu check to return 1 in case the kernel_fpu_begin() has not been said yet. Once it has been the __thread_has_fpu() will start returning 0. Notice that with eagerfpu the __thread_has_fpu is always true initially. FPU use is thus always possible no matter what task is under us, unless the state has already been saved with kernel_fpu_begin(). [ hpa: this is a performance regression, not a correctness regression, but since it can be quite serious on CPUs which need encryption at interrupt time I am marking this for urgent/stable. ] Signed-off-by: Pekka Riikonen Link: http://lkml.kernel.org/r/alpine.GSO.2.00.1305131356320.18@git.silcnet.org Cc: v3.7+ Signed-off-by: H. Peter Anvin diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index 245a71d..cb33909 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -22,23 +22,19 @@ /* * Were we in an interrupt that interrupted kernel mode? * - * For now, with eagerfpu we will return interrupted kernel FPU - * state as not-idle. TBD: Ideally we can change the return value - * to something like __thread_has_fpu(current). But we need to - * be careful of doing __thread_clear_has_fpu() before saving - * the FPU etc for supporting nested uses etc. For now, take - * the simple route! - * * On others, we can do a kernel_fpu_begin/end() pair *ONLY* if that * pair does nothing at all: the thread must not have fpu (so * that we don't try to save the FPU state), and TS must * be set (so that the clts/stts pair does nothing that is * visible in the interrupted kernel thread). + * + * Except for the eagerfpu case when we return 1 unless we've already + * been eager and saved the state in kernel_fpu_begin(). */ static inline bool interrupted_kernel_fpu_idle(void) { if (use_eager_fpu()) - return 0; + return __thread_has_fpu(current); return !__thread_has_fpu(current) && (read_cr0() & X86_CR0_TS); @@ -78,8 +74,8 @@ void __kernel_fpu_begin(void) struct task_struct *me = current; if (__thread_has_fpu(me)) { - __save_init_fpu(me); __thread_clear_has_fpu(me); + __save_init_fpu(me); /* We do 'stts()' in __kernel_fpu_end() */ } else if (!use_eager_fpu()) { this_cpu_write(fpu_owner_task, NULL); -- cgit v0.10.2 From e38b170695d4108eeb6cd84db36f567fc6de4120 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Wed, 29 May 2013 22:55:56 +0000 Subject: be2net: Mark checksum fail for IP fragmented packets HW does not compute L4 checksum for IP Fragmented packets. Signed-off-by: Kalesh AP Signed-off-by: Somnath Kotur Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index f544b29..0a51068 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -262,6 +262,7 @@ struct be_rx_compl_info { u8 ipv6; u8 vtm; u8 pkt_type; + u8 ip_frag; }; struct be_rx_obj { diff --git a/drivers/net/ethernet/emulex/benet/be_hw.h b/drivers/net/ethernet/emulex/benet/be_hw.h index 3c1099b..8780183 100644 --- a/drivers/net/ethernet/emulex/benet/be_hw.h +++ b/drivers/net/ethernet/emulex/benet/be_hw.h @@ -356,7 +356,7 @@ struct amap_eth_rx_compl_v0 { u8 ip_version; /* dword 1 */ u8 macdst[6]; /* dword 1 */ u8 vtp; /* dword 1 */ - u8 rsvd0; /* dword 1 */ + u8 ip_frag; /* dword 1 */ u8 fragndx[10]; /* dword 1 */ u8 ct[2]; /* dword 1 */ u8 sw; /* dword 1 */ diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index ca2967b..32a6927 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -1599,6 +1599,8 @@ static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl, compl); } rxcp->port = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, port, compl); + rxcp->ip_frag = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, + ip_frag, compl); } static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo) @@ -1620,6 +1622,9 @@ static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo) else be_parse_rx_compl_v0(compl, rxcp); + if (rxcp->ip_frag) + rxcp->l4_csum = 0; + if (rxcp->vlanf) { /* vlanf could be wrongly set in some cards. * ignore if vtm is not set */ @@ -2168,7 +2173,7 @@ static irqreturn_t be_msix(int irq, void *dev) static inline bool do_gro(struct be_rx_compl_info *rxcp) { - return (rxcp->tcpf && !rxcp->err) ? true : false; + return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false; } static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi, -- cgit v0.10.2 From 01e5b2c4559d084f4eaf0d160d84cc185db141ba Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Wed, 29 May 2013 22:56:17 +0000 Subject: be2net: Fix crash on 2nd invocation of PCI AER/EEH error_detected hook During a PCI EEH/AER error recovery flow, if the device did not successfully restart, the error_detected() hook may be called a second time with a "perm_failure" state. This patch skips over driver cleanup for the second invocation of the callback. Also, Lancer error recovery code is fixed-up to handle these changes. Signed-off-by: Kalesh AP Signed-off-by: Somnath kotur Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c index a236ecd..1db2df6 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -562,7 +562,7 @@ int lancer_test_and_set_rdy_state(struct be_adapter *adapter) resource_error = lancer_provisioning_error(adapter); if (resource_error) - return -1; + return -EAGAIN; status = lancer_wait_ready(adapter); if (!status) { @@ -590,8 +590,8 @@ int lancer_test_and_set_rdy_state(struct be_adapter *adapter) * when PF provisions resources. */ resource_error = lancer_provisioning_error(adapter); - if (status == -1 && !resource_error) - adapter->eeh_error = true; + if (resource_error) + status = -EAGAIN; return status; } diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 32a6927..8bc1b21 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -4098,6 +4098,7 @@ static int be_get_initial_config(struct be_adapter *adapter) static int lancer_recover_func(struct be_adapter *adapter) { + struct device *dev = &adapter->pdev->dev; int status; status = lancer_test_and_set_rdy_state(adapter); @@ -4109,8 +4110,7 @@ static int lancer_recover_func(struct be_adapter *adapter) be_clear(adapter); - adapter->hw_error = false; - adapter->fw_timeout = false; + be_clear_all_error(adapter); status = be_setup(adapter); if (status) @@ -4122,13 +4122,13 @@ static int lancer_recover_func(struct be_adapter *adapter) goto err; } - dev_err(&adapter->pdev->dev, - "Adapter SLIPORT recovery succeeded\n"); + dev_err(dev, "Error recovery successful\n"); return 0; err: - if (adapter->eeh_error) - dev_err(&adapter->pdev->dev, - "Adapter SLIPORT recovery failed\n"); + if (status == -EAGAIN) + dev_err(dev, "Waiting for resource provisioning\n"); + else + dev_err(dev, "Error recovery failed\n"); return status; } @@ -4137,28 +4137,27 @@ static void be_func_recovery_task(struct work_struct *work) { struct be_adapter *adapter = container_of(work, struct be_adapter, func_recovery_work.work); - int status; + int status = 0; be_detect_error(adapter); if (adapter->hw_error && lancer_chip(adapter)) { - if (adapter->eeh_error) - goto out; - rtnl_lock(); netif_device_detach(adapter->netdev); rtnl_unlock(); status = lancer_recover_func(adapter); - if (!status) netif_device_attach(adapter->netdev); } -out: - schedule_delayed_work(&adapter->func_recovery_work, - msecs_to_jiffies(1000)); + /* In Lancer, for all errors other than provisioning error (-EAGAIN), + * no need to attempt further recovery. + */ + if (!status || status == -EAGAIN) + schedule_delayed_work(&adapter->func_recovery_work, + msecs_to_jiffies(1000)); } static void be_worker(struct work_struct *work) @@ -4441,20 +4440,19 @@ static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev, dev_err(&adapter->pdev->dev, "EEH error detected\n"); - adapter->eeh_error = true; - - cancel_delayed_work_sync(&adapter->func_recovery_work); + if (!adapter->eeh_error) { + adapter->eeh_error = true; - rtnl_lock(); - netif_device_detach(netdev); - rtnl_unlock(); + cancel_delayed_work_sync(&adapter->func_recovery_work); - if (netif_running(netdev)) { rtnl_lock(); - be_close(netdev); + netif_device_detach(netdev); + if (netif_running(netdev)) + be_close(netdev); rtnl_unlock(); + + be_clear(adapter); } - be_clear(adapter); if (state == pci_channel_io_perm_failure) return PCI_ERS_RESULT_DISCONNECT; @@ -4479,7 +4477,6 @@ static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev) int status; dev_info(&adapter->pdev->dev, "EEH reset\n"); - be_clear_all_error(adapter); status = pci_enable_device(pdev); if (status) @@ -4497,6 +4494,7 @@ static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev) return PCI_ERS_RESULT_DISCONNECT; pci_cleanup_aer_uncorrect_error_status(pdev); + be_clear_all_error(adapter); return PCI_ERS_RESULT_RECOVERED; } -- cgit v0.10.2 From 21363ca873334391992f2f424856aa864345bb61 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 29 May 2013 21:35:23 -0700 Subject: target/file: Fix off-by-one READ_CAPACITY bug for !S_ISBLK export This patch fixes a bug where FILEIO was incorrectly reporting the number of logical blocks (+ 1) when using non struct block_device export mode. It changes fd_get_blocks() to follow all other backend ->get_blocks() cases, and reduces the calculated dev_size by one dev->dev_attrib.block_size number of bytes, and also fixes initial fd_block_size assignment at fd_configure_device() time introduced in commit 0fd97ccf4. Reported-by: Wenchao Xia Reported-by: Badari Pulavarty Tested-by: Badari Pulavarty Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index 1b1d544..b11890d 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -153,6 +153,7 @@ static int fd_configure_device(struct se_device *dev) struct request_queue *q = bdev_get_queue(inode->i_bdev); unsigned long long dev_size; + fd_dev->fd_block_size = bdev_logical_block_size(inode->i_bdev); /* * Determine the number of bytes from i_size_read() minus * one (1) logical sector from underlying struct block_device @@ -199,6 +200,7 @@ static int fd_configure_device(struct se_device *dev) goto fail; } + fd_dev->fd_block_size = FD_BLOCKSIZE; /* * Limit UNMAP emulation to 8k Number of LBAs (NoLB) */ @@ -217,9 +219,7 @@ static int fd_configure_device(struct se_device *dev) dev->dev_attrib.max_write_same_len = 0x1000; } - fd_dev->fd_block_size = dev->dev_attrib.hw_block_size; - - dev->dev_attrib.hw_block_size = FD_BLOCKSIZE; + dev->dev_attrib.hw_block_size = fd_dev->fd_block_size; dev->dev_attrib.hw_max_sectors = FD_MAX_SECTORS; dev->dev_attrib.hw_queue_depth = FD_MAX_DEVICE_QUEUE_DEPTH; @@ -694,11 +694,12 @@ static sector_t fd_get_blocks(struct se_device *dev) * to handle underlying block_device resize operations. */ if (S_ISBLK(i->i_mode)) - dev_size = (i_size_read(i) - fd_dev->fd_block_size); + dev_size = i_size_read(i); else dev_size = fd_dev->fd_dev_size; - return div_u64(dev_size, dev->dev_attrib.block_size); + return div_u64(dev_size - dev->dev_attrib.block_size, + dev->dev_attrib.block_size); } static struct sbc_ops fd_sbc_ops = { -- cgit v0.10.2 From cea4dcfdad926a27a18e188720efe0f2c9403456 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 23 May 2013 10:32:17 -0700 Subject: iscsi-target: fix heap buffer overflow on error If a key was larger than 64 bytes, as checked by iscsi_check_key(), the error response packet, generated by iscsi_add_notunderstood_response(), would still attempt to copy the entire key into the packet, overflowing the structure on the heap. Remote preauthentication kernel memory corruption was possible if a target was configured and listening on the network. CVE-2013-2850 Signed-off-by: Kees Cook Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c index c2185fc..e382221 100644 --- a/drivers/target/iscsi/iscsi_target_parameters.c +++ b/drivers/target/iscsi/iscsi_target_parameters.c @@ -758,9 +758,9 @@ static int iscsi_add_notunderstood_response( } INIT_LIST_HEAD(&extra_response->er_list); - strncpy(extra_response->key, key, strlen(key) + 1); - strncpy(extra_response->value, NOTUNDERSTOOD, - strlen(NOTUNDERSTOOD) + 1); + strlcpy(extra_response->key, key, sizeof(extra_response->key)); + strlcpy(extra_response->value, NOTUNDERSTOOD, + sizeof(extra_response->value)); list_add_tail(&extra_response->er_list, ¶m_list->extra_response_list); @@ -1629,8 +1629,6 @@ int iscsi_decode_text_input( if (phase & PHASE_SECURITY) { if (iscsi_check_for_auth_key(key) > 0) { - char *tmpptr = key + strlen(key); - *tmpptr = '='; kfree(tmpbuf); return 1; } diff --git a/drivers/target/iscsi/iscsi_target_parameters.h b/drivers/target/iscsi/iscsi_target_parameters.h index 915b067..a47046a 100644 --- a/drivers/target/iscsi/iscsi_target_parameters.h +++ b/drivers/target/iscsi/iscsi_target_parameters.h @@ -1,8 +1,10 @@ #ifndef ISCSI_PARAMETERS_H #define ISCSI_PARAMETERS_H +#include + struct iscsi_extra_response { - char key[64]; + char key[KEY_MAXLEN]; char value[32]; struct list_head er_list; } ____cacheline_aligned; -- cgit v0.10.2 From d68c380590c390a488fe214e5ebf9439216ac3ba Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 27 May 2013 12:28:25 -0300 Subject: clk: mxs: Include clk mxs header file Fix the following sparse warnings: drivers/clk/mxs/clk-imx28.c:72:5: warning: symbol 'mxs_saif_clkmux_select' was not declared. Should it be static? drivers/clk/mxs/clk-imx28.c:156:12: warning: symbol 'mx28_clocks_init' was not declared. Should it be static? Signed-off-by: Fabio Estevam Acked-by: Shawn Guo Signed-off-by: Mike Turquette [mturquette@linaro.org: fixed $SUBJECT line] diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c index d0e5eed..4faf0af 100644 --- a/drivers/clk/mxs/clk-imx28.c +++ b/drivers/clk/mxs/clk-imx28.c @@ -10,6 +10,7 @@ */ #include +#include #include #include #include -- cgit v0.10.2 From 970fa986fadb1165cf38b45b70e98302a3bee497 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 31 May 2013 12:45:09 +1000 Subject: drm/qxl: fix build warnings on 32-bit Just the usual printk related warnings. Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c index 6db7370..a4b71b2 100644 --- a/drivers/gpu/drm/qxl/qxl_ioctl.c +++ b/drivers/gpu/drm/qxl/qxl_ioctl.c @@ -151,7 +151,7 @@ static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, struct qxl_bo *cmd_bo; int release_type; struct drm_qxl_command *commands = - (struct drm_qxl_command *)execbuffer->commands; + (struct drm_qxl_command *)(uintptr_t)execbuffer->commands; if (DRM_COPY_FROM_USER(&user_cmd, &commands[cmd_num], sizeof(user_cmd))) @@ -193,7 +193,7 @@ static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, for (i = 0 ; i < user_cmd.relocs_num; ++i) { if (DRM_COPY_FROM_USER(&reloc, - &((struct drm_qxl_reloc *)user_cmd.relocs)[i], + &((struct drm_qxl_reloc *)(uintptr_t)user_cmd.relocs)[i], sizeof(reloc))) { qxl_bo_list_unreserve(&reloc_list, true); qxl_release_unreserve(qdev, release); diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c index 85127ed..e27ce2a 100644 --- a/drivers/gpu/drm/qxl/qxl_kms.c +++ b/drivers/gpu/drm/qxl/qxl_kms.c @@ -128,12 +128,13 @@ int qxl_device_init(struct qxl_device *qdev, qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0)); qdev->surface_mapping = io_mapping_create_wc(qdev->surfaceram_base, qdev->surfaceram_size); - DRM_DEBUG_KMS("qxl: vram %p-%p(%dM %dk), surface %p-%p(%dM %dk)\n", - (void *)qdev->vram_base, (void *)pci_resource_end(pdev, 0), + DRM_DEBUG_KMS("qxl: vram %llx-%llx(%dM %dk), surface %llx-%llx(%dM %dk)\n", + (unsigned long long)qdev->vram_base, + (unsigned long long)pci_resource_end(pdev, 0), (int)pci_resource_len(pdev, 0) / 1024 / 1024, (int)pci_resource_len(pdev, 0) / 1024, - (void *)qdev->surfaceram_base, - (void *)pci_resource_end(pdev, 1), + (unsigned long long)qdev->surfaceram_base, + (unsigned long long)pci_resource_end(pdev, 1), (int)qdev->surfaceram_size / 1024 / 1024, (int)qdev->surfaceram_size / 1024); -- cgit v0.10.2 From 8b1dacb6ae15c94d50642a474e5af8981555253b Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Thu, 30 May 2013 19:55:34 +0800 Subject: ALSA: sis7019: fix error return code in sis_chip_create() Fix to return a negative error code in the pci_set_dma_mask() error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Takashi Iwai diff --git a/sound/pci/sis7019.c b/sound/pci/sis7019.c index d59abe1..748e82d 100644 --- a/sound/pci/sis7019.c +++ b/sound/pci/sis7019.c @@ -1341,7 +1341,8 @@ static int sis_chip_create(struct snd_card *card, if (rc) goto error_out; - if (pci_set_dma_mask(pci, DMA_BIT_MASK(30)) < 0) { + rc = pci_set_dma_mask(pci, DMA_BIT_MASK(30)); + if (rc < 0) { dev_err(&pci->dev, "architecture does not support 30-bit PCI busmaster DMA"); goto error_out_enabled; } -- cgit v0.10.2 From 6b4dc2bd7e706570167e086a41b87ea250a55b34 Mon Sep 17 00:00:00 2001 From: Ebben Aries Date: Wed, 29 May 2013 22:27:18 -0600 Subject: ALSA: hda - add dock support for Thinkpad T431s Add a model/fixup string "lenovo-dock", for Thinkpad T431s, to allow sound in docking station. Tested on Lenovo T431s with ThinkPad Mini Dock Plus Series 3 Signed-off-by: Ebben Aries Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 59d2e91..9658faf 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3530,6 +3530,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x17aa, 0x21fa, "Thinkpad X230", ALC269_FIXUP_LENOVO_DOCK), SND_PCI_QUIRK(0x17aa, 0x21f3, "Thinkpad T430", ALC269_FIXUP_LENOVO_DOCK), SND_PCI_QUIRK(0x17aa, 0x21fb, "Thinkpad T430s", ALC269_FIXUP_LENOVO_DOCK), + SND_PCI_QUIRK(0x17aa, 0x2208, "Thinkpad T431s", ALC269_FIXUP_LENOVO_DOCK), SND_PCI_QUIRK(0x17aa, 0x2203, "Thinkpad X230 Tablet", ALC269_FIXUP_LENOVO_DOCK), SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K), SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD), -- cgit v0.10.2 From d5ddad4168348337d98d6b8f156a3892de444411 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Fri, 31 May 2013 00:46:11 -0700 Subject: target: Propigate up ->cmd_kref put return via transport_generic_free_cmd Go ahead and propigate up the ->cmd_kref put return value from target_put_sess_cmd() -> transport_release_cmd() -> transport_put_cmd() -> transport_generic_free_cmd(). This is useful for certain fabrics when determining the active I/O shutdown case with SCF_ACK_KREF where a final target_put_sess_cmd() is still required by the caller. Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index bbca144..21e3158 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -65,7 +65,7 @@ static void transport_complete_task_attr(struct se_cmd *cmd); static void transport_handle_queue_full(struct se_cmd *cmd, struct se_device *dev); static int transport_generic_get_mem(struct se_cmd *cmd); -static void transport_put_cmd(struct se_cmd *cmd); +static int transport_put_cmd(struct se_cmd *cmd); static void target_complete_ok_work(struct work_struct *work); int init_se_kmem_caches(void) @@ -1944,7 +1944,7 @@ static inline void transport_free_pages(struct se_cmd *cmd) * This routine unconditionally frees a command, and reference counting * or list removal must be done in the caller. */ -static void transport_release_cmd(struct se_cmd *cmd) +static int transport_release_cmd(struct se_cmd *cmd) { BUG_ON(!cmd->se_tfo); @@ -1956,11 +1956,11 @@ static void transport_release_cmd(struct se_cmd *cmd) * If this cmd has been setup with target_get_sess_cmd(), drop * the kref and call ->release_cmd() in kref callback. */ - if (cmd->check_release != 0) { - target_put_sess_cmd(cmd->se_sess, cmd); - return; - } + if (cmd->check_release != 0) + return target_put_sess_cmd(cmd->se_sess, cmd); + cmd->se_tfo->release_cmd(cmd); + return 1; } /** @@ -1969,7 +1969,7 @@ static void transport_release_cmd(struct se_cmd *cmd) * * This routine releases our reference to the command and frees it if possible. */ -static void transport_put_cmd(struct se_cmd *cmd) +static int transport_put_cmd(struct se_cmd *cmd) { unsigned long flags; @@ -1977,7 +1977,7 @@ static void transport_put_cmd(struct se_cmd *cmd) if (atomic_read(&cmd->t_fe_count) && !atomic_dec_and_test(&cmd->t_fe_count)) { spin_unlock_irqrestore(&cmd->t_state_lock, flags); - return; + return 0; } if (cmd->transport_state & CMD_T_DEV_ACTIVE) { @@ -1987,8 +1987,7 @@ static void transport_put_cmd(struct se_cmd *cmd) spin_unlock_irqrestore(&cmd->t_state_lock, flags); transport_free_pages(cmd); - transport_release_cmd(cmd); - return; + return transport_release_cmd(cmd); } void *transport_kmap_data_sg(struct se_cmd *cmd) @@ -2153,13 +2152,15 @@ static void transport_write_pending_qf(struct se_cmd *cmd) } } -void transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) +int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) { + int ret = 0; + if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) { if (wait_for_tasks && (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) transport_wait_for_tasks(cmd); - transport_release_cmd(cmd); + ret = transport_release_cmd(cmd); } else { if (wait_for_tasks) transport_wait_for_tasks(cmd); @@ -2167,8 +2168,9 @@ void transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) if (cmd->se_lun) transport_lun_remove_cmd(cmd); - transport_put_cmd(cmd); + ret = transport_put_cmd(cmd); } + return ret; } EXPORT_SYMBOL(transport_generic_free_cmd); diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h index 8a26f0d..1dcce9c 100644 --- a/include/target/target_core_fabric.h +++ b/include/target/target_core_fabric.h @@ -114,7 +114,7 @@ sense_reason_t transport_generic_new_cmd(struct se_cmd *); void target_execute_cmd(struct se_cmd *cmd); -void transport_generic_free_cmd(struct se_cmd *, int); +int transport_generic_free_cmd(struct se_cmd *, int); bool transport_wait_for_tasks(struct se_cmd *); int transport_check_aborted_status(struct se_cmd *, int); -- cgit v0.10.2 From aafc9d158b0039e600fc429246c7bb04a111fb26 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Fri, 31 May 2013 00:49:41 -0700 Subject: iscsi-target: Fix iscsit_free_cmd() se_cmd->cmd_kref shutdown handling With the introduction of target_get_sess_cmd() referencing counting for ISCSI_OP_SCSI_CMD processing with iser-target, iscsit_free_cmd() usage in traditional iscsi-target driver code now needs to be aware of the active I/O shutdown case when a remaining se_cmd->cmd_kref reference may exist after transport_generic_free_cmd() completes, requiring a final target_put_sess_cmd() to release iscsi_cmd descriptor memory. This patch changes iscsit_free_cmd() to invoke __iscsit_free_cmd() before transport_generic_free_cmd() -> target_put_sess_cmd(), and also avoids aquiring the per-connection queue locks for typical fast-path calls during normal ISTATE_REMOVE operation. Also update iscsit_free_cmd() usage throughout iscsi-target to use the new 'bool shutdown' parameter. This patch fixes a regression bug introduced during v3.10-rc1 in commit 3e1c81a95, that was causing the following WARNING to appear: [ 257.235153] ------------[ cut here]------------ [ 257.240314] WARNING: at kernel/softirq.c:160 local_bh_enable_ip+0x3c/0x86() [ 257.248089] Modules linked in: vhost_scsi ib_srpt ib_cm ib_sa ib_mad ib_core tcm_qla2xxx tcm_loop tcm_fc libfc iscsi_target_mod target_core_pscsi target_core_file target_core_iblock target_core_mod configfs ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi loop acpi_cpufreq freq_table mperf kvm_intel kvm crc32c_intel button ehci_pci pcspkr joydev i2c_i801 microcode ext3 jbd raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 linear igb hwmon i2c_algo_bit i2c_core ptp ata_piix libata qla2xxx uhci_hcd ehci_hcd mlx4_core scsi_transport_fc scsi_tgt pps_core [ 257.308748] CPU: 1 PID: 3295 Comm: iscsi_ttx Not tainted 3.10.0-rc2+ #103 [ 257.316329] Hardware name: Intel Corporation S5520HC/S5520HC, BIOS S5500.86B.01.00.0057.031020111721 03/10/2011 [ 257.327597] ffffffff814c24b7 ffff880458331b58 ffffffff8138eef2 ffff880458331b98 [ 257.335892] ffffffff8102c052 ffff880400000008 0000000000000000 ffff88085bdf0000 [ 257.344191] ffff88085bdf00d8 ffff88085bdf00e0 ffff88085bdf00f8 ffff880458331ba8 [ 257.352488] Call Trace: [ 257.355223] [] dump_stack+0x19/0x1f [ 257.360963] [] warn_slowpath_common+0x62/0x7b [ 257.367669] [] warn_slowpath_null+0x15/0x17 [ 257.374181] [] local_bh_enable_ip+0x3c/0x86 [ 257.380697] [] _raw_spin_unlock_bh+0x10/0x12 [ 257.387311] [] iscsit_free_r2ts_from_list+0x5e/0x67 [iscsi_target_mod] [ 257.396438] [] iscsit_release_cmd+0x20/0x223 [iscsi_target_mod] [ 257.404893] [] lio_release_cmd+0x3a/0x3e [iscsi_target_mod] [ 257.412964] [] target_release_cmd_kref+0x7a/0x7c [target_core_mod] [ 257.421712] [] target_put_sess_cmd+0x5f/0x7f [target_core_mod] [ 257.430071] [] transport_release_cmd+0x59/0x6f [target_core_mod] [ 257.438625] [] transport_put_cmd+0x131/0x140 [target_core_mod] [ 257.446985] [] ? transport_wait_for_tasks+0xfa/0x1d5 [target_core_mod] [ 257.456121] [] transport_generic_free_cmd+0x4e/0x52 [target_core_mod] [ 257.465159] [] ? __migrate_task+0x110/0x110 [ 257.471674] [] iscsit_free_cmd+0x46/0x55 [iscsi_target_mod] [ 257.479741] [] iscsit_immediate_queue+0x301/0x353 [iscsi_target_mod] [ 257.488683] [] iscsi_target_tx_thread+0x1c6/0x2a8 [iscsi_target_mod] [ 257.497623] [] ? wake_up_bit+0x25/0x25 [ 257.503652] [] ? iscsit_ack_from_expstatsn+0xd5/0xd5 [iscsi_target_mod] [ 257.512882] [] kthread+0xb0/0xb8 [ 257.518329] [] ? kthread_freezable_should_stop+0x60/0x60 [ 257.526105] [] ret_from_fork+0x7c/0xb0 [ 257.532133] [] ? kthread_freezable_should_stop+0x60/0x60 [ 257.539906] ---[ end trace 5520397d0f2e0800 ]--- Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 262ef1f..d7705e5 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -651,7 +651,7 @@ static int iscsit_add_reject( cmd->buf_ptr = kmemdup(buf, ISCSI_HDR_LEN, GFP_KERNEL); if (!cmd->buf_ptr) { pr_err("Unable to allocate memory for cmd->buf_ptr\n"); - iscsit_release_cmd(cmd); + iscsit_free_cmd(cmd, false); return -1; } @@ -697,7 +697,7 @@ int iscsit_add_reject_from_cmd( cmd->buf_ptr = kmemdup(buf, ISCSI_HDR_LEN, GFP_KERNEL); if (!cmd->buf_ptr) { pr_err("Unable to allocate memory for cmd->buf_ptr\n"); - iscsit_release_cmd(cmd); + iscsit_free_cmd(cmd, false); return -1; } @@ -1743,7 +1743,7 @@ int iscsit_handle_nop_out(struct iscsi_conn *conn, struct iscsi_cmd *cmd, return 0; out: if (cmd) - iscsit_release_cmd(cmd); + iscsit_free_cmd(cmd, false); ping_out: kfree(ping_data); return ret; @@ -2251,7 +2251,7 @@ iscsit_handle_logout_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, if (conn->conn_state != TARG_CONN_STATE_LOGGED_IN) { pr_err("Received logout request on connection that" " is not in logged in state, ignoring request.\n"); - iscsit_release_cmd(cmd); + iscsit_free_cmd(cmd, false); return 0; } @@ -3665,7 +3665,7 @@ iscsit_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state list_del(&cmd->i_conn_node); spin_unlock_bh(&conn->cmd_lock); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, false); break; case ISTATE_SEND_NOPIN_WANT_RESPONSE: iscsit_mod_nopin_response_timer(conn); @@ -4122,7 +4122,7 @@ static void iscsit_release_commands_from_conn(struct iscsi_conn *conn) iscsit_increment_maxcmdsn(cmd, sess); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, true); spin_lock_bh(&conn->cmd_lock); } diff --git a/drivers/target/iscsi/iscsi_target_erl2.c b/drivers/target/iscsi/iscsi_target_erl2.c index ba6091b..45a5afd 100644 --- a/drivers/target/iscsi/iscsi_target_erl2.c +++ b/drivers/target/iscsi/iscsi_target_erl2.c @@ -143,7 +143,7 @@ void iscsit_free_connection_recovery_entires(struct iscsi_session *sess) list_del(&cmd->i_conn_node); cmd->conn = NULL; spin_unlock(&cr->conn_recovery_cmd_lock); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, true); spin_lock(&cr->conn_recovery_cmd_lock); } spin_unlock(&cr->conn_recovery_cmd_lock); @@ -165,7 +165,7 @@ void iscsit_free_connection_recovery_entires(struct iscsi_session *sess) list_del(&cmd->i_conn_node); cmd->conn = NULL; spin_unlock(&cr->conn_recovery_cmd_lock); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, true); spin_lock(&cr->conn_recovery_cmd_lock); } spin_unlock(&cr->conn_recovery_cmd_lock); @@ -248,7 +248,7 @@ void iscsit_discard_cr_cmds_by_expstatsn( iscsit_remove_cmd_from_connection_recovery(cmd, sess); spin_unlock(&cr->conn_recovery_cmd_lock); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, true); spin_lock(&cr->conn_recovery_cmd_lock); } spin_unlock(&cr->conn_recovery_cmd_lock); @@ -302,7 +302,7 @@ int iscsit_discard_unacknowledged_ooo_cmdsns_for_conn(struct iscsi_conn *conn) list_del(&cmd->i_conn_node); spin_unlock_bh(&conn->cmd_lock); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, true); spin_lock_bh(&conn->cmd_lock); } spin_unlock_bh(&conn->cmd_lock); @@ -355,7 +355,7 @@ int iscsit_prepare_cmds_for_realligance(struct iscsi_conn *conn) list_del(&cmd->i_conn_node); spin_unlock_bh(&conn->cmd_lock); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, true); spin_lock_bh(&conn->cmd_lock); continue; } @@ -375,7 +375,7 @@ int iscsit_prepare_cmds_for_realligance(struct iscsi_conn *conn) iscsi_sna_gte(cmd->cmd_sn, conn->sess->exp_cmd_sn)) { list_del(&cmd->i_conn_node); spin_unlock_bh(&conn->cmd_lock); - iscsit_free_cmd(cmd); + iscsit_free_cmd(cmd, true); spin_lock_bh(&conn->cmd_lock); continue; } diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 2cc6c9a..08a3bac 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -676,40 +676,56 @@ void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *conn) void iscsit_release_cmd(struct iscsi_cmd *cmd) { - struct iscsi_conn *conn = cmd->conn; - - iscsit_free_r2ts_from_list(cmd); - iscsit_free_all_datain_reqs(cmd); - kfree(cmd->buf_ptr); kfree(cmd->pdu_list); kfree(cmd->seq_list); kfree(cmd->tmr_req); kfree(cmd->iov_data); - if (conn) { + kmem_cache_free(lio_cmd_cache, cmd); +} + +static void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool scsi_cmd, + bool check_queues) +{ + struct iscsi_conn *conn = cmd->conn; + + if (scsi_cmd) { + if (cmd->data_direction == DMA_TO_DEVICE) { + iscsit_stop_dataout_timer(cmd); + iscsit_free_r2ts_from_list(cmd); + } + if (cmd->data_direction == DMA_FROM_DEVICE) + iscsit_free_all_datain_reqs(cmd); + } + + if (conn && check_queues) { iscsit_remove_cmd_from_immediate_queue(cmd, conn); iscsit_remove_cmd_from_response_queue(cmd, conn); } - - kmem_cache_free(lio_cmd_cache, cmd); } -void iscsit_free_cmd(struct iscsi_cmd *cmd) +void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) { + struct se_cmd *se_cmd = NULL; + int rc; /* * Determine if a struct se_cmd is associated with * this struct iscsi_cmd. */ switch (cmd->iscsi_opcode) { case ISCSI_OP_SCSI_CMD: - if (cmd->data_direction == DMA_TO_DEVICE) - iscsit_stop_dataout_timer(cmd); + se_cmd = &cmd->se_cmd; + __iscsit_free_cmd(cmd, true, shutdown); /* * Fallthrough */ case ISCSI_OP_SCSI_TMFUNC: - transport_generic_free_cmd(&cmd->se_cmd, 1); + rc = transport_generic_free_cmd(&cmd->se_cmd, 1); + if (!rc && shutdown && se_cmd && se_cmd->se_sess) { + __iscsit_free_cmd(cmd, true, shutdown); + target_put_sess_cmd(se_cmd->se_sess, se_cmd); + } break; case ISCSI_OP_REJECT: /* @@ -718,11 +734,19 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd) * associated cmd->se_cmd needs to be released. */ if (cmd->se_cmd.se_tfo != NULL) { - transport_generic_free_cmd(&cmd->se_cmd, 1); + se_cmd = &cmd->se_cmd; + __iscsit_free_cmd(cmd, true, shutdown); + + rc = transport_generic_free_cmd(&cmd->se_cmd, 1); + if (!rc && shutdown && se_cmd->se_sess) { + __iscsit_free_cmd(cmd, true, shutdown); + target_put_sess_cmd(se_cmd->se_sess, se_cmd); + } break; } /* Fall-through */ default: + __iscsit_free_cmd(cmd, false, shutdown); cmd->release_cmd(cmd); break; } diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h index 4f8e01a..a442265 100644 --- a/drivers/target/iscsi/iscsi_target_util.h +++ b/drivers/target/iscsi/iscsi_target_util.h @@ -29,7 +29,7 @@ extern void iscsit_remove_cmd_from_tx_queues(struct iscsi_cmd *, struct iscsi_co extern bool iscsit_conn_all_queues_empty(struct iscsi_conn *); extern void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *); extern void iscsit_release_cmd(struct iscsi_cmd *); -extern void iscsit_free_cmd(struct iscsi_cmd *); +extern void iscsit_free_cmd(struct iscsi_cmd *, bool); extern int iscsit_check_session_usage_count(struct iscsi_session *); extern void iscsit_dec_session_usage_count(struct iscsi_session *); extern void iscsit_inc_session_usage_count(struct iscsi_session *); -- cgit v0.10.2 From df66834a43c461de2565c45d815288ba1c0def37 Mon Sep 17 00:00:00 2001 From: Finn Thain Date: Wed, 29 May 2013 12:37:17 +1000 Subject: m68k/mac: Fix unexpected interrupt with CONFIG_EARLY_PRINTK The present code does not wait for the SCC to finish resetting itself before trying to initialise the device. The result is that the SCC interrupt sources become enabled (if they weren't already). This leads to an early boot crash (unexpected interrupt) given CONFIG_EARLY_PRINTK. Fix this by adding a delay. A successful reset disables the interrupt sources. Also, after the reset for channel A setup, the SCC then gets a second reset for channel B setup which leaves channel A uninitialised again. Fix this by performing the reset only once. Signed-off-by: Finn Thain Cc: stable@vger.kernel.org Signed-off-by: Geert Uytterhoeven diff --git a/arch/m68k/kernel/head.S b/arch/m68k/kernel/head.S index d197e7f..ac85f16 100644 --- a/arch/m68k/kernel/head.S +++ b/arch/m68k/kernel/head.S @@ -2752,11 +2752,9 @@ func_return get_new_page #ifdef CONFIG_MAC L(scc_initable_mac): - .byte 9,12 /* Reset */ .byte 4,0x44 /* x16, 1 stopbit, no parity */ .byte 3,0xc0 /* receiver: 8 bpc */ .byte 5,0xe2 /* transmitter: 8 bpc, assert dtr/rts */ - .byte 9,0 /* no interrupts */ .byte 10,0 /* NRZ */ .byte 11,0x50 /* use baud rate generator */ .byte 12,1,13,0 /* 38400 baud */ @@ -2899,6 +2897,7 @@ func_start serial_init,%d0/%d1/%a0/%a1 is_not_mac(L(serial_init_not_mac)) #ifdef SERIAL_DEBUG + /* You may define either or both of these. */ #define MAC_USE_SCC_A /* Modem port */ #define MAC_USE_SCC_B /* Printer port */ @@ -2908,9 +2907,21 @@ func_start serial_init,%d0/%d1/%a0/%a1 #define mac_scc_cha_b_data_offset 0x4 #define mac_scc_cha_a_data_offset 0x6 +#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B) + movel %pc@(L(mac_sccbase)),%a0 + /* Reset SCC device */ + moveb #9,%a0@(mac_scc_cha_a_ctrl_offset) + moveb #0xc0,%a0@(mac_scc_cha_a_ctrl_offset) + /* Wait for 5 PCLK cycles, which is about 68 CPU cycles */ + /* 5 / 3.6864 MHz = approx. 1.36 us = 68 / 50 MHz */ + movel #35,%d0 +5: + subq #1,%d0 + jne 5b +#endif + #ifdef MAC_USE_SCC_A /* Initialize channel A */ - movel %pc@(L(mac_sccbase)),%a0 lea %pc@(L(scc_initable_mac)),%a1 5: moveb %a1@+,%d0 jmi 6f @@ -2922,9 +2933,6 @@ func_start serial_init,%d0/%d1/%a0/%a1 #ifdef MAC_USE_SCC_B /* Initialize channel B */ -#ifndef MAC_USE_SCC_A /* Load mac_sccbase only if needed */ - movel %pc@(L(mac_sccbase)),%a0 -#endif /* MAC_USE_SCC_A */ lea %pc@(L(scc_initable_mac)),%a1 7: moveb %a1@+,%d0 jmi 8f @@ -2933,6 +2941,7 @@ func_start serial_init,%d0/%d1/%a0/%a1 jra 7b 8: #endif /* MAC_USE_SCC_B */ + #endif /* SERIAL_DEBUG */ jra L(serial_init_done) @@ -3006,17 +3015,17 @@ func_start serial_putc,%d0/%d1/%a0/%a1 #ifdef SERIAL_DEBUG -#ifdef MAC_USE_SCC_A +#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B) movel %pc@(L(mac_sccbase)),%a1 +#endif + +#ifdef MAC_USE_SCC_A 3: btst #2,%a1@(mac_scc_cha_a_ctrl_offset) jeq 3b moveb %d0,%a1@(mac_scc_cha_a_data_offset) #endif /* MAC_USE_SCC_A */ #ifdef MAC_USE_SCC_B -#ifndef MAC_USE_SCC_A /* Load mac_sccbase only if needed */ - movel %pc@(L(mac_sccbase)),%a1 -#endif /* MAC_USE_SCC_A */ 4: btst #2,%a1@(mac_scc_cha_b_ctrl_offset) jeq 4b moveb %d0,%a1@(mac_scc_cha_b_data_offset) -- cgit v0.10.2 From 3ee2102fbe92150af2b6d1d87f6bbefbaff0c7ca Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Fri, 31 May 2013 10:41:04 +0200 Subject: ALSA: hda - Add headset quirk for two Dell machines This quirk is required for the headset mic to work on these two machines. BugLink: https://bugs.launchpad.net/bugs/1186170 Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 9658faf..02e22b4 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3493,6 +3493,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x1028, 0x05f4, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05f5, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05f6, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), + SND_PCI_QUIRK(0x1028, 0x05f8, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), + SND_PCI_QUIRK(0x1028, 0x0609, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2), SND_PCI_QUIRK(0x103c, 0x18e6, "HP", ALC269_FIXUP_HP_GPIO_LED), SND_PCI_QUIRK(0x103c, 0x1973, "HP Pavilion", ALC269_FIXUP_HP_MUTE_LED_MIC1), -- cgit v0.10.2 From 45eacc692771bd2b1ea3d384e6345cab3da10861 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Wed, 15 May 2013 22:16:32 +0200 Subject: vtime: Use consistent clocks among nohz accounting While computing the cputime delta of dynticks CPUs, we are mixing up clocks of differents natures: * local_clock() which takes care of unstable clock sources and fix these if needed. * sched_clock() which is the weaker version of local_clock(). It doesn't compute any fixup in case of unstable source. If the clock source is stable, those two clocks are the same and we can safely compute the difference against two random points. Otherwise it results in random deltas as sched_clock() can randomly drift away, back or forward, from local_clock(). As a consequence, some strange behaviour with unstable tsc has been observed such as non progressing constant zero cputime. (The 'top' command showing no load). Fix this by only using local_clock(), or its irq safe/remote equivalent, in vtime code. Reported-by: Mike Galbraith Suggested-by: Mike Galbraith Cc: Steven Rostedt Cc: Paul E. McKenney Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: Borislav Petkov Cc: Li Zhong Cc: Mike Galbraith Signed-off-by: Frederic Weisbecker Signed-off-by: Ingo Molnar diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 71a5782..b1dd2db 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -34,7 +34,7 @@ static inline void vtime_user_exit(struct task_struct *tsk) } extern void vtime_guest_enter(struct task_struct *tsk); extern void vtime_guest_exit(struct task_struct *tsk); -extern void vtime_init_idle(struct task_struct *tsk); +extern void vtime_init_idle(struct task_struct *tsk, int cpu); #else static inline void vtime_account_irq_exit(struct task_struct *tsk) { @@ -45,7 +45,7 @@ static inline void vtime_user_enter(struct task_struct *tsk) { } static inline void vtime_user_exit(struct task_struct *tsk) { } static inline void vtime_guest_enter(struct task_struct *tsk) { } static inline void vtime_guest_exit(struct task_struct *tsk) { } -static inline void vtime_init_idle(struct task_struct *tsk) { } +static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { } #endif #ifdef CONFIG_IRQ_TIME_ACCOUNTING diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 58453b8..e1a27f9 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4745,7 +4745,7 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu) */ idle->sched_class = &idle_sched_class; ftrace_graph_init_idle_task(idle, cpu); - vtime_init_idle(idle); + vtime_init_idle(idle, cpu); #if defined(CONFIG_SMP) sprintf(idle->comm, "%s/%d", INIT_TASK_COMM, cpu); #endif diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index cc2dc3e..b5ccba2 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -747,17 +747,17 @@ void arch_vtime_task_switch(struct task_struct *prev) write_seqlock(¤t->vtime_seqlock); current->vtime_snap_whence = VTIME_SYS; - current->vtime_snap = sched_clock(); + current->vtime_snap = sched_clock_cpu(smp_processor_id()); write_sequnlock(¤t->vtime_seqlock); } -void vtime_init_idle(struct task_struct *t) +void vtime_init_idle(struct task_struct *t, int cpu) { unsigned long flags; write_seqlock_irqsave(&t->vtime_seqlock, flags); t->vtime_snap_whence = VTIME_SYS; - t->vtime_snap = sched_clock(); + t->vtime_snap = sched_clock_cpu(cpu); write_sequnlock_irqrestore(&t->vtime_seqlock, flags); } -- cgit v0.10.2 From 521921bad1192fb1b8f9b6a5aa673635848b8b5f Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 16 May 2013 01:21:38 +0200 Subject: kvm: Move guest entry/exit APIs to context_tracking The kvm_host.h header file doesn't handle well inclusion when archs don't support KVM. This results in build crashes for such archs when they want to implement context tracking because this subsystem includes kvm_host.h in order to implement the guest_enter/exit APIs but it doesn't handle KVM off case. To fix this, move the guest_enter()/guest_exit() declarations and generic implementation to the context tracking headers. These generic APIs actually belong to this subsystem, besides other domains boundary tracking like user_enter() et al. KVM now properly becomes a user of this library, not the other buggy way around. Reported-by: Kevin Hilman Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Signed-off-by: Frederic Weisbecker Cc: Steven Rostedt Cc: Paul E. McKenney Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: Kevin Hilman Cc: Marcelo Tosatti Cc: Gleb Natapov Signed-off-by: Ingo Molnar diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h index 365f4a6..fc09d7b 100644 --- a/include/linux/context_tracking.h +++ b/include/linux/context_tracking.h @@ -3,6 +3,7 @@ #include #include +#include #include struct context_tracking { @@ -19,6 +20,26 @@ struct context_tracking { } state; }; +static inline void __guest_enter(void) +{ + /* + * This is running in ioctl context so we can avoid + * the call to vtime_account() with its unnecessary idle check. + */ + vtime_account_system(current); + current->flags |= PF_VCPU; +} + +static inline void __guest_exit(void) +{ + /* + * This is running in ioctl context so we can avoid + * the call to vtime_account() with its unnecessary idle check. + */ + vtime_account_system(current); + current->flags &= ~PF_VCPU; +} + #ifdef CONFIG_CONTEXT_TRACKING DECLARE_PER_CPU(struct context_tracking, context_tracking); @@ -35,6 +56,9 @@ static inline bool context_tracking_active(void) extern void user_enter(void); extern void user_exit(void); +extern void guest_enter(void); +extern void guest_exit(void); + static inline enum ctx_state exception_enter(void) { enum ctx_state prev_ctx; @@ -57,6 +81,17 @@ extern void context_tracking_task_switch(struct task_struct *prev, static inline bool context_tracking_in_user(void) { return false; } static inline void user_enter(void) { } static inline void user_exit(void) { } + +static inline void guest_enter(void) +{ + __guest_enter(); +} + +static inline void guest_exit(void) +{ + __guest_exit(); +} + static inline enum ctx_state exception_enter(void) { return 0; } static inline void exception_exit(enum ctx_state prev_ctx) { } static inline void context_tracking_task_switch(struct task_struct *prev, diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index f0eea07..8db53cf 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -760,42 +761,6 @@ static inline int kvm_iommu_unmap_guest(struct kvm *kvm) } #endif -static inline void __guest_enter(void) -{ - /* - * This is running in ioctl context so we can avoid - * the call to vtime_account() with its unnecessary idle check. - */ - vtime_account_system(current); - current->flags |= PF_VCPU; -} - -static inline void __guest_exit(void) -{ - /* - * This is running in ioctl context so we can avoid - * the call to vtime_account() with its unnecessary idle check. - */ - vtime_account_system(current); - current->flags &= ~PF_VCPU; -} - -#ifdef CONFIG_CONTEXT_TRACKING -extern void guest_enter(void); -extern void guest_exit(void); - -#else /* !CONFIG_CONTEXT_TRACKING */ -static inline void guest_enter(void) -{ - __guest_enter(); -} - -static inline void guest_exit(void) -{ - __guest_exit(); -} -#endif /* !CONFIG_CONTEXT_TRACKING */ - static inline void kvm_guest_enter(void) { unsigned long flags; diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c index 65349f0..85bdde1 100644 --- a/kernel/context_tracking.c +++ b/kernel/context_tracking.c @@ -15,7 +15,6 @@ */ #include -#include #include #include #include -- cgit v0.10.2 From 1a7f829f094dd7951e7d46c571a18080e455a436 Mon Sep 17 00:00:00 2001 From: Li Zhong Date: Fri, 17 May 2013 16:44:04 +0800 Subject: nohz: Fix notifier return val that enforce timekeeping In tick_nohz_cpu_down_callback() if the cpu is the one handling timekeeping, we must return something that stops the CPU_DOWN_PREPARE notifiers and then start notify CPU_DOWN_FAILED on the already called notifier call backs. However traditional errno values are not handled by the notifier unless these are encapsulated using errno_to_notifier(). Hence the current -EINVAL is misinterpreted and converted to junk after notifier_to_errno(), leaving the notifier subsystem to random behaviour such as eventually allowing the cpu to go down. Fix this by using the standard NOTIFY_BAD instead. Signed-off-by: Li Zhong Reviewed-by: Srivatsa S. Bhat Acked-by: Steven Rostedt Cc: Paul E. McKenney Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: Borislav Petkov Signed-off-by: Frederic Weisbecker Signed-off-by: Ingo Molnar diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index f420813..0cf1c14 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -306,7 +306,7 @@ static int __cpuinit tick_nohz_cpu_down_callback(struct notifier_block *nfb, * we can't safely shutdown that CPU. */ if (have_nohz_full_mask && tick_do_timer_cpu == cpu) - return -EINVAL; + return NOTIFY_BAD; break; } return NOTIFY_OK; -- cgit v0.10.2 From f5d00c1f9adb350c24c5301600f7bf2da99b66de Mon Sep 17 00:00:00 2001 From: Jiri Bohac Date: Tue, 28 May 2013 15:29:03 +0200 Subject: tick: Remove useless timekeeping duty attribution to broadcast source Since 7300711e ("clockevents: broadcast fixup possible waiters"), the timekeeping duty is assigned to the CPU that handles the tick broadcast clock device by the time it is set in one shot mode. This is an issue in full dynticks mode where the timekeeping duty must stay handled by the boot CPU for now. Otherwise it prevents secondary CPUs from offlining and this breaks suspend/shutdown/reboot/... As it appears there is no reason for this timekeeping duty to be moved to the broadcast CPU, besides nothing prevent it from being later re-assigned to another target, let's simply remove it. Signed-off-by: Jiri Bohac Reported-by: Steven Rostedt Acked-by: Thomas Gleixner Cc: Steven Rostedt Cc: Thomas Gleixner Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Borislav Petkov Signed-off-by: Frederic Weisbecker Signed-off-by: Ingo Molnar diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index 0c73942..b4c2455 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -698,10 +698,6 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc) bc->event_handler = tick_handle_oneshot_broadcast; - /* Take the do_timer update */ - if (!tick_nohz_full_cpu(cpu)) - tick_do_timer_cpu = cpu; - /* * We must be careful here. There might be other CPUs * waiting for periodic broadcast. We need to set the -- cgit v0.10.2 From 381cc2b9705512ee7c7f1839cbdde374625a2a9f Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Fri, 24 May 2013 12:02:35 +0100 Subject: arm64: treat unhandled compat el0 traps as undef Currently, if a compat process reads or writes from/to a disabled cp15/cp14 register, the trap is not handled by the el0_sync_compat handler, and the kernel will head to bad_mode, where it will die(), and oops(). For 64 bit processes, disabled system register accesses are currently treated as unhandled instructions. This patch modifies entry.S to treat these unhandled traps as undefined instructions, sending a SIGILL to userspace. This gives processes a chance to handle this and stop using inaccessible registers, and prevents further issues in the kernel as a result of the die(). Reported-by: Johannes Jensen Signed-off-by: Mark Rutland Signed-off-by: Catalin Marinas diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index c7e0470..1d13142 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -390,6 +390,16 @@ el0_sync_compat: b.eq el0_fpsimd_exc cmp x24, #ESR_EL1_EC_UNKNOWN // unknown exception in EL0 b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP15_32 // CP15 MRC/MCR trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP15_64 // CP15 MRRC/MCRR trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP14_MR // CP14 MRC/MCR trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP14_LS // CP14 LDC/STC trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP14_64 // CP14 MRRC/MCRR trap + b.eq el0_undef cmp x24, #ESR_EL1_EC_BREAKPT_EL0 // debug exception in EL0 b.ge el0_dbg b el0_inv -- cgit v0.10.2 From 9955ac47f4ba1c95ecb6092aeaefb40a22e99268 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Tue, 28 May 2013 15:54:15 +0100 Subject: arm64: don't kill the kernel on a bad esr from el0 Rather than completely killing the kernel if we receive an esr value we can't deal with in the el0 handlers, send the process a SIGILL and log the esr value in the hope that we can debug it. If we receive a bad esr from el1, we'll die() as before. Signed-off-by: Mark Rutland Signed-off-by: Catalin Marinas Cc: stable@vger.kernel.org diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index f1ff9ba..f30852d 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -311,14 +311,20 @@ asmlinkage long do_ni_syscall(struct pt_regs *regs) */ asmlinkage void bad_mode(struct pt_regs *regs, int reason, unsigned int esr) { + siginfo_t info; + void __user *pc = (void __user *)instruction_pointer(regs); console_verbose(); pr_crit("Bad mode in %s handler detected, code 0x%08x\n", handler[reason], esr); + __show_regs(regs); + + info.si_signo = SIGILL; + info.si_errno = 0; + info.si_code = ILL_ILLOPC; + info.si_addr = pc; - die("Oops - bad mode", regs, 0); - local_irq_disable(); - panic("bad mode"); + arm64_notify_die("Oops - bad mode", regs, &info, 0); } void __pte_error(const char *file, int line, unsigned long val) -- cgit v0.10.2 From 8b811bae69cf30e0a9676d7dcafb0cf16f13b3bc Mon Sep 17 00:00:00 2001 From: Stefan Weinhuber Date: Tue, 28 May 2013 15:26:06 +0200 Subject: s390/dasd: fix handling of gone paths When a path is gone and dasd_generic_path_event is called with a PE_PATH_GONE event, we must assume that any I/O request on that subchannel is still running. This is unlike the dasd_generic_notify handler and the CIO_NO_PATH event, which implies that the subchannel has been cleared. If dasd_generic_path_event finds that the path has been the last usable path, it must not call dasd_generic_last_path_gone (which would reset the state of running requests), but just set the DASD_STOPPED_DC_WAIT bit. Signed-off-by: Stefan Weinhuber Signed-off-by: Martin Schwidefsky diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 4361d97..d72a9216e 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -3440,8 +3440,16 @@ void dasd_generic_path_event(struct ccw_device *cdev, int *path_event) device->path_data.opm &= ~eventlpm; device->path_data.ppm &= ~eventlpm; device->path_data.npm &= ~eventlpm; - if (oldopm && !device->path_data.opm) - dasd_generic_last_path_gone(device); + if (oldopm && !device->path_data.opm) { + dev_warn(&device->cdev->dev, + "No verified channel paths remain " + "for the device\n"); + DBF_DEV_EVENT(DBF_WARNING, device, + "%s", "last verified path gone"); + dasd_eer_write(device, NULL, DASD_EER_NOPATH); + dasd_device_set_stop_bits(device, + DASD_STOPPED_DC_WAIT); + } } if (path_event[chp] & PE_PATH_AVAILABLE) { device->path_data.opm &= ~eventlpm; -- cgit v0.10.2 From e86cbd8765bd2e1f9eeb209822449c9b1e5958cf Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Wed, 29 May 2013 13:08:39 +0200 Subject: s390/pgtable: Fix gmap notifier address The address of the gmap notifier was broken, resulting in unhandled validity intercepts in KVM. Fix the rmap->vmaddr to be on a segment boundary. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 18dc417..a938b54 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -492,7 +492,7 @@ static int gmap_connect_pgtable(unsigned long address, unsigned long segment, mp = (struct gmap_pgtable *) page->index; rmap->gmap = gmap; rmap->entry = segment_ptr; - rmap->vmaddr = address; + rmap->vmaddr = address & PMD_MASK; spin_lock(&mm->page_table_lock); if (*segment_ptr == segment) { list_add(&rmap->list, &mp->mapper); -- cgit v0.10.2 From fa08a396647767abd24a9e7015cb177121d0cf15 Mon Sep 17 00:00:00 2001 From: Ramachandra Rao Gajula Date: Sat, 11 May 2013 15:19:31 -0700 Subject: NVMe: Add MSI support Some devices only have support for MSI, not MSI-X. While MSI is more limited, it still provides better performance than line-based interrupts. Signed-off-by: Ramachandra Gajula Signed-off-by: Matthew Wilcox diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index a57d3bc..ce79a59 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1637,7 +1637,8 @@ static int set_queue_count(struct nvme_dev *dev, int count) static int nvme_setup_io_queues(struct nvme_dev *dev) { - int result, cpu, i, nr_io_queues, db_bar_size, q_depth; + struct pci_dev *pdev = dev->pci_dev; + int result, cpu, i, nr_io_queues, db_bar_size, q_depth, q_count; nr_io_queues = num_online_cpus(); result = set_queue_count(dev, nr_io_queues); @@ -1646,14 +1647,14 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) if (result < nr_io_queues) nr_io_queues = result; + q_count = nr_io_queues; /* Deregister the admin queue's interrupt */ free_irq(dev->entry[0].vector, dev->queues[0]); db_bar_size = 4096 + ((nr_io_queues + 1) << (dev->db_stride + 3)); if (db_bar_size > 8192) { iounmap(dev->bar); - dev->bar = ioremap(pci_resource_start(dev->pci_dev, 0), - db_bar_size); + dev->bar = ioremap(pci_resource_start(pdev, 0), db_bar_size); dev->dbs = ((void __iomem *)dev->bar) + 4096; dev->queues[0]->q_db = dev->dbs; } @@ -1661,19 +1662,36 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) for (i = 0; i < nr_io_queues; i++) dev->entry[i].entry = i; for (;;) { - result = pci_enable_msix(dev->pci_dev, dev->entry, - nr_io_queues); + result = pci_enable_msix(pdev, dev->entry, nr_io_queues); if (result == 0) { break; } else if (result > 0) { nr_io_queues = result; continue; } else { - nr_io_queues = 1; + nr_io_queues = 0; break; } } + if (nr_io_queues == 0) { + nr_io_queues = q_count; + for (;;) { + result = pci_enable_msi_block(pdev, nr_io_queues); + if (result == 0) { + for (i = 0; i < nr_io_queues; i++) + dev->entry[i].vector = i + pdev->irq; + break; + } else if (result > 0) { + nr_io_queues = result; + continue; + } else { + nr_io_queues = 1; + break; + } + } + } + result = queue_request_irq(dev, dev->queues[0], "nvme admin"); /* XXX: handle failure here */ @@ -1854,7 +1872,10 @@ static void nvme_free_dev(struct kref *kref) { struct nvme_dev *dev = container_of(kref, struct nvme_dev, kref); nvme_dev_remove(dev); - pci_disable_msix(dev->pci_dev); + if (dev->pci_dev->msi_enabled) + pci_disable_msi(dev->pci_dev); + else if (dev->pci_dev->msix_enabled) + pci_disable_msix(dev->pci_dev); iounmap(dev->bar); nvme_release_instance(dev); nvme_release_prp_pools(dev); @@ -1987,7 +2008,10 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) unmap: iounmap(dev->bar); disable_msix: - pci_disable_msix(pdev); + if (dev->pci_dev->msi_enabled) + pci_disable_msi(dev->pci_dev); + else if (dev->pci_dev->msix_enabled) + pci_disable_msix(dev->pci_dev); nvme_release_instance(dev); nvme_release_prp_pools(dev); disable: -- cgit v0.10.2 From 24a923e4e9a296a8f8ff852109d423ba07616cc4 Mon Sep 17 00:00:00 2001 From: Dustin Kirkland Date: Fri, 31 May 2013 10:41:43 -0500 Subject: Update eCryptFS maintainers Remove myself from the eCryptFS kernel maintainers. Add the ecryptfs.org website. I will continue to actively maintain and monitor the ecryptfs-utils user space project and packages. Signed-off-by: Dustin Kirkland Signed-off-by: Tyler Hicks diff --git a/MAINTAINERS b/MAINTAINERS index 829c032..d151f5a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2890,8 +2890,8 @@ F: drivers/media/dvb-frontends/ec100* ECRYPT FILE SYSTEM M: Tyler Hicks -M: Dustin Kirkland L: ecryptfs@vger.kernel.org +W: http://ecryptfs.org W: https://launchpad.net/ecryptfs S: Supported F: Documentation/filesystems/ecryptfs.txt -- cgit v0.10.2 From 5d477b6079619910dab882fa229cce1f14f86cf8 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 10 May 2013 14:04:11 +0200 Subject: vfs: Fix invalid ida_remove() call MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When the group id of a shared mount is not allocated, the umount still tries to call mnt_release_group_id(), which eventually hits a kernel warning at ida_remove() spewing a message like: ida_remove called for id=0 which is not allocated. This patch fixes the bug simply checking the group id in the caller. Reported-by: Cristian Rodríguez Signed-off-by: Takashi Iwai Signed-off-by: Al Viro diff --git a/fs/pnode.c b/fs/pnode.c index 3d2a714..9af0df1 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -83,7 +83,8 @@ static int do_make_slave(struct mount *mnt) if (peer_mnt == mnt) peer_mnt = NULL; } - if (IS_MNT_SHARED(mnt) && list_empty(&mnt->mnt_share)) + if (mnt->mnt_group_id && IS_MNT_SHARED(mnt) && + list_empty(&mnt->mnt_share)) mnt_release_group_id(mnt); list_del_init(&mnt->mnt_share); -- cgit v0.10.2 From 801d9d26bfd6e88e9cf0efbb30b649d1bdc15dcf Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 29 May 2013 13:26:53 +0100 Subject: fix buffer leak after "scsi: saner replacements for ->proc_info()" That patch failed to set proc_scsi_fops' .release method. Signed-off-by: Jan Beulich Signed-off-by: Al Viro diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c index db66357..86f0c5d 100644 --- a/drivers/scsi/scsi_proc.c +++ b/drivers/scsi/scsi_proc.c @@ -84,6 +84,7 @@ static int proc_scsi_host_open(struct inode *inode, struct file *file) static const struct file_operations proc_scsi_fops = { .open = proc_scsi_host_open, + .release = single_release, .read = seq_read, .llseek = seq_lseek, .write = proc_scsi_host_write -- cgit v0.10.2 From 1d7095c72d35eee4ebc28e66563e636b9adafeb2 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 17 May 2013 15:21:56 -0400 Subject: qnx6: qnx6_readdir() has a braino in pos calculation We want to mask lower 5 bits out, not leave only those and clear the rest... As it is, we end up always starting to read from the beginning of directory, no matter what the current position had been. Signed-off-by: Al Viro diff --git a/fs/qnx6/dir.c b/fs/qnx6/dir.c index 8798d06..afa6be6 100644 --- a/fs/qnx6/dir.c +++ b/fs/qnx6/dir.c @@ -120,7 +120,7 @@ static int qnx6_readdir(struct file *filp, void *dirent, filldir_t filldir) struct inode *inode = file_inode(filp); struct super_block *s = inode->i_sb; struct qnx6_sb_info *sbi = QNX6_SB(s); - loff_t pos = filp->f_pos & (QNX6_DIR_ENTRY_SIZE - 1); + loff_t pos = filp->f_pos & ~(QNX6_DIR_ENTRY_SIZE - 1); unsigned long npages = dir_pages(inode); unsigned long n = pos >> PAGE_CACHE_SHIFT; unsigned start = (pos & ~PAGE_CACHE_MASK) / QNX6_DIR_ENTRY_SIZE; -- cgit v0.10.2 From 31abdab9c11bb1694ecd1476a7edbe8e964d94ac Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 18 May 2013 02:38:52 -0400 Subject: hpfs: deadlock and race in directory lseek() For one thing, there's an ABBA deadlock on hpfs fs-wide lock and i_mutex in hpfs_dir_lseek() - there's a lot of methods that grab the former with the caller already holding the latter, so it must take i_mutex first. For another, locking the damn thing, carefully validating the offset, then dropping locks and assigning the offset is obviously racy. Moreover, we _must_ do hpfs_add_pos(), or the machinery in dnode.c won't modify the sucker on B-tree surgeries. Signed-off-by: Al Viro diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c index 546f6d3..834ac13 100644 --- a/fs/hpfs/dir.c +++ b/fs/hpfs/dir.c @@ -33,25 +33,27 @@ static loff_t hpfs_dir_lseek(struct file *filp, loff_t off, int whence) if (whence == SEEK_DATA || whence == SEEK_HOLE) return -EINVAL; + mutex_lock(&i->i_mutex); hpfs_lock(s); /*printk("dir lseek\n");*/ if (new_off == 0 || new_off == 1 || new_off == 11 || new_off == 12 || new_off == 13) goto ok; - mutex_lock(&i->i_mutex); pos = ((loff_t) hpfs_de_as_down_as_possible(s, hpfs_inode->i_dno) << 4) + 1; while (pos != new_off) { if (map_pos_dirent(i, &pos, &qbh)) hpfs_brelse4(&qbh); else goto fail; if (pos == 12) goto fail; } - mutex_unlock(&i->i_mutex); + hpfs_add_pos(i, &filp->f_pos); ok: + filp->f_pos = new_off; hpfs_unlock(s); - return filp->f_pos = new_off; -fail: mutex_unlock(&i->i_mutex); + return new_off; +fail: /*printk("illegal lseek: %016llx\n", new_off);*/ hpfs_unlock(s); + mutex_unlock(&i->i_mutex); return -ESPIPE; } -- cgit v0.10.2 From 448293aadb54ab38b9c053bf9f1eecafdc0ed214 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 22 May 2013 13:41:26 -0400 Subject: befs_readdir(): do not increment ->f_pos if filldir tells us to stop Signed-off-by: Al Viro diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 8615ee8..f95dddc 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -265,8 +265,8 @@ befs_readdir(struct file *filp, void *dirent, filldir_t filldir) result = filldir(dirent, keybuf, keysize, filp->f_pos, (ino_t) value, d_type); } - - filp->f_pos++; + if (!result) + filp->f_pos++; befs_debug(sb, "<--- befs_readdir() filp->f_pos %Ld", filp->f_pos); -- cgit v0.10.2 From 65ac057bce426b4abdf42384c4e09e40a634df32 Mon Sep 17 00:00:00 2001 From: Richard Genoud Date: Fri, 31 May 2013 14:28:38 +0000 Subject: trivial: atmel_lcdfb: add missing error message When a too small framebuffer is given, the atmel_lcdfb_check_var silently fails. Adding an error message will save some head scratching. Signed-off-by: Richard Genoud Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index 540909d..6e6491f 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c @@ -461,8 +461,11 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var, if (info->fix.smem_len) { unsigned int smem_len = (var->xres_virtual * var->yres_virtual * ((var->bits_per_pixel + 7) / 8)); - if (smem_len > info->fix.smem_len) + if (smem_len > info->fix.smem_len) { + dev_err(dev, "Frame buffer is too small (%u) for screen size (need at least %u)\n", + info->fix.smem_len, smem_len); return -EINVAL; + } } /* Saturate vertical and horizontal timings at maximum values */ -- cgit v0.10.2 From 56c21b53ab071feb3ce93375a563ead745fa7105 Mon Sep 17 00:00:00 2001 From: Richard Genoud Date: Fri, 31 May 2013 15:49:35 +0000 Subject: atmel_lcdfb: blank the backlight on remove When removing atmel_lcdfb module, the backlight is unregistered but not blanked. (only for CONFIG_BACKLIGHT_ATMEL_LCDC case). This can result in the screen going full white depending on how the PWM is wired. Signed-off-by: Richard Genoud Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index 6e6491f..effdb37 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c @@ -223,8 +223,14 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo) static void exit_backlight(struct atmel_lcdfb_info *sinfo) { - if (sinfo->backlight) - backlight_device_unregister(sinfo->backlight); + if (!sinfo->backlight) + return; + + if (sinfo->backlight->ops) { + sinfo->backlight->props.power = FB_BLANK_POWERDOWN; + sinfo->backlight->ops->update_status(sinfo->backlight); + } + backlight_device_unregister(sinfo->backlight); } #else -- cgit v0.10.2 From 4ad1f70ebcdb69393ce083f514bf4a4a3a3e65cb Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 23 May 2013 04:38:22 -0400 Subject: zoran: racy refcount handling in vm_ops ->open()/->close() worse, we lock ->resource_lock too late when we are destroying the final clonal VMA; the check for lack of other mappings of the same opened file can race with mmap(). Signed-off-by: Al Viro diff --git a/drivers/media/pci/zoran/zoran.h b/drivers/media/pci/zoran/zoran.h index ca2754a..5e04008 100644 --- a/drivers/media/pci/zoran/zoran.h +++ b/drivers/media/pci/zoran/zoran.h @@ -176,7 +176,7 @@ struct zoran_fh; struct zoran_mapping { struct zoran_fh *fh; - int count; + atomic_t count; }; struct zoran_buffer { diff --git a/drivers/media/pci/zoran/zoran_driver.c b/drivers/media/pci/zoran/zoran_driver.c index 1168a84..d133c30 100644 --- a/drivers/media/pci/zoran/zoran_driver.c +++ b/drivers/media/pci/zoran/zoran_driver.c @@ -2803,8 +2803,7 @@ static void zoran_vm_open (struct vm_area_struct *vma) { struct zoran_mapping *map = vma->vm_private_data; - - map->count++; + atomic_inc(&map->count); } static void @@ -2815,7 +2814,7 @@ zoran_vm_close (struct vm_area_struct *vma) struct zoran *zr = fh->zr; int i; - if (--map->count > 0) + if (!atomic_dec_and_mutex_lock(&map->count, &zr->resource_lock)) return; dprintk(3, KERN_INFO "%s: %s - munmap(%s)\n", ZR_DEVNAME(zr), @@ -2828,14 +2827,16 @@ zoran_vm_close (struct vm_area_struct *vma) kfree(map); /* Any buffers still mapped? */ - for (i = 0; i < fh->buffers.num_buffers; i++) - if (fh->buffers.buffer[i].map) + for (i = 0; i < fh->buffers.num_buffers; i++) { + if (fh->buffers.buffer[i].map) { + mutex_unlock(&zr->resource_lock); return; + } + } dprintk(3, KERN_INFO "%s: %s - free %s buffers\n", ZR_DEVNAME(zr), __func__, mode_name(fh->map_mode)); - mutex_lock(&zr->resource_lock); if (fh->map_mode == ZORAN_MAP_MODE_RAW) { if (fh->buffers.active != ZORAN_FREE) { @@ -2939,7 +2940,7 @@ zoran_mmap (struct file *file, goto mmap_unlock_and_return; } map->fh = fh; - map->count = 1; + atomic_set(&map->count, 1); vma->vm_ops = &zoran_vm_ops; vma->vm_flags |= VM_DONTEXPAND; -- cgit v0.10.2 From 7de3d66b1387ddf5a37d9689e5eb8510fb75c765 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 31 May 2013 08:53:07 -0700 Subject: x86: Fix adjust_range_size_mask calling position Commit 8d57470d x86, mm: setup page table in top-down causes a kernel panic while setting mem=2G. [mem 0x00000000-0x000fffff] page 4k [mem 0x7fe00000-0x7fffffff] page 1G [mem 0x7c000000-0x7fdfffff] page 1G [mem 0x00100000-0x001fffff] page 4k [mem 0x00200000-0x7bffffff] page 2M for last entry is not what we want, we should have [mem 0x00200000-0x3fffffff] page 2M [mem 0x40000000-0x7bffffff] page 1G Actually we merge the continuous ranges with same page size too early. in this case, before merging we have [mem 0x00200000-0x3fffffff] page 2M [mem 0x40000000-0x7bffffff] page 2M after merging them, will get [mem 0x00200000-0x7bffffff] page 2M even we can use 1G page to map [mem 0x40000000-0x7bffffff] that will cause problem, because we already map [mem 0x7fe00000-0x7fffffff] page 1G [mem 0x7c000000-0x7fdfffff] page 1G with 1G page, aka [0x40000000-0x7fffffff] is mapped with 1G page already. During phys_pud_init() for [0x40000000-0x7bffffff], it will not reuse existing that pud page, and allocate new one then try to use 2M page to map it instead, as page_size_mask does not include PG_LEVEL_1G. At end will have [7c000000-0x7fffffff] not mapped, loop in phys_pmd_init stop mapping at 0x7bffffff. That is right behavoir, it maps exact range with exact page size that we ask, and we should explicitly call it to map [7c000000-0x7fffffff] before or after mapping 0x40000000-0x7bffffff. Anyway we need to make sure ranges' page_size_mask correct and consistent after split_mem_range for each range. Fix that by calling adjust_range_size_mask before merging range with same page size. -v2: update change log. -v3: add more explanation why [7c000000-0x7fffffff] is not mapped, and it causes panic. Bisected-by: "Xie, ChanglongX" Bisected-by: Yuanhan Liu Reported-and-tested-by: Yuanhan Liu Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1370015587-20835-1-git-send-email-yinghai@kernel.org Cc: v3.9 Signed-off-by: H. Peter Anvin diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index eaac174..1f34e92 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -277,6 +277,9 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range, end_pfn = limit_pfn; nr_range = save_mr(mr, nr_range, start_pfn, end_pfn, 0); + if (!after_bootmem) + adjust_range_page_size_mask(mr, nr_range); + /* try to merge same page size and continuous */ for (i = 0; nr_range > 1 && i < nr_range - 1; i++) { unsigned long old_start; @@ -291,9 +294,6 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range, nr_range--; } - if (!after_bootmem) - adjust_range_page_size_mask(mr, nr_range); - for (i = 0; i < nr_range; i++) printk(KERN_DEBUG " [mem %#010lx-%#010lx] page %s\n", mr[i].start, mr[i].end - 1, -- cgit v0.10.2 From 0bdc7acba56a7ca4232f15f37b16f7ec079385ab Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Fri, 31 May 2013 15:07:52 -0400 Subject: reiserfs: fix spurious multiple-fill in reiserfs_readdir_dentry After sleeping for filldir(), we check to see if the file system has changed and research. The next_pos pointer is updated but its value isn't pushed into the key used for the search itself. As a result, the search returns the same item that the last cycle of the loop did and filldir() is called multiple times with the same data. The end result is that the buffer can contain the same name multiple times. This can be returned to userspace or used internally in the xattr code where it can manifest with the following warning: jdm-20004 reiserfs_delete_xattrs: Couldn't delete all xattrs (-2) reiserfs_for_each_xattr uses reiserfs_readdir_dentry to iterate over the xattr names and ends up trying to unlink the same name twice. The second attempt fails with -ENOENT and the error is returned. At some point I'll need to add support into reiserfsck to remove the orphaned directories left behind when this occurs. The fix is to push the value into the key before researching. Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c index 66c53b6..6c2d136 100644 --- a/fs/reiserfs/dir.c +++ b/fs/reiserfs/dir.c @@ -204,6 +204,8 @@ int reiserfs_readdir_dentry(struct dentry *dentry, void *dirent, next_pos = deh_offset(deh) + 1; if (item_moved(&tmp_ih, &path_to_entry)) { + set_cpu_key_k_offset(&pos_key, + next_pos); goto research; } } /* for */ -- cgit v0.10.2 From 4a8570112b76a63ad21cfcbe2783f98f7fd5ba1b Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Fri, 31 May 2013 15:54:17 -0400 Subject: reiserfs: fix problems with chowning setuid file w/ xattrs reiserfs_chown_xattrs() takes the iattr struct passed into ->setattr and uses it to iterate over all the attrs associated with a file to change ownership of xattrs (and transfer quota associated with the xattr files). When the setuid bit is cleared during chown, ATTR_MODE and iattr->ia_mode are passed to all the xattrs as well. This means that the xattr directory will have S_IFREG added to its mode bits. This has been prevented in practice by a missing IS_PRIVATE check in reiserfs_acl_chmod, which caused a double-lock to occur while holding the write lock. Since the file system was completely locked up, the writeout of the corrupted mode never happened. This patch temporarily clears everything but ATTR_UID|ATTR_GID for the calls to reiserfs_setattr and adds the missing IS_PRIVATE check. Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index 4cce1d9..821bcf7 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -318,7 +318,19 @@ static int delete_one_xattr(struct dentry *dentry, void *data) static int chown_one_xattr(struct dentry *dentry, void *data) { struct iattr *attrs = data; - return reiserfs_setattr(dentry, attrs); + int ia_valid = attrs->ia_valid; + int err; + + /* + * We only want the ownership bits. Otherwise, we'll do + * things like change a directory to a regular file if + * ATTR_MODE is set. + */ + attrs->ia_valid &= (ATTR_UID|ATTR_GID); + err = reiserfs_setattr(dentry, attrs); + attrs->ia_valid = ia_valid; + + return err; } /* No i_mutex, but the inode is unconnected. */ diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index d7c01ef..6c8767f 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -443,6 +443,9 @@ int reiserfs_acl_chmod(struct inode *inode) int depth; int error; + if (IS_PRIVATE(inode)) + return 0; + if (S_ISLNK(inode->i_mode)) return -EOPNOTSUPP; -- cgit v0.10.2 From a1457c0ce976bad1356b9b0437f2a5c3ab8a9cfc Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Fri, 31 May 2013 15:51:17 -0400 Subject: reiserfs: fix deadlock with nfs racing on create/lookup Reiserfs is currently able to be deadlocked by having two NFS clients where one has removed and recreated a file and another is accessing the file with an open file handle. If one client deletes and recreates a file with timing such that the recreated file obtains the same [dirid, objectid] pair as the original file while another client accesses the file via file handle, the create and lookup can race and deadlock if the lookup manages to create the in-memory inode first. The create thread, in insert_inode_locked4, will hold the write lock while waiting on the other inode to be unlocked. The lookup thread, anywhere in the iget path, will release and reacquire the write lock while it schedules. If it needs to reacquire the lock while the create thread has it, it will never be able to make forward progress because it needs to reacquire the lock before ultimately unlocking the inode. This patch drops the write lock across the insert_inode_locked4 call so that the ordering of inode_wait -> write lock is retained. Since this would have been the case before the BKL push-down, this is safe. Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 77d6d47..f844533 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -1811,11 +1811,16 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th, TYPE_STAT_DATA, SD_SIZE, MAX_US_INT); memcpy(INODE_PKEY(inode), &(ih.ih_key), KEY_SIZE); args.dirid = le32_to_cpu(ih.ih_key.k_dir_id); - if (insert_inode_locked4(inode, args.objectid, - reiserfs_find_actor, &args) < 0) { + + reiserfs_write_unlock(inode->i_sb); + err = insert_inode_locked4(inode, args.objectid, + reiserfs_find_actor, &args); + reiserfs_write_lock(inode->i_sb); + if (err) { err = -EINVAL; goto out_bad_inode; } + if (old_format_only(sb)) /* not a perfect generation count, as object ids can be reused, but ** this is as good as reiserfs can do right now. -- cgit v0.10.2 From 1fc29bacedeabb278080e31bb9c1ecb49f143c3b Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 31 May 2013 10:00:18 -0400 Subject: cifs: fix off-by-one bug in build_unc_path_to_root commit 839db3d10a (cifs: fix up handling of prefixpath= option) changed the code such that the vol->prepath no longer contained a leading delimiter and then fixed up the places that accessed that field to account for that change. One spot in build_unc_path_to_root was missed however. When doing the pointer addition on pos, that patch failed to account for the fact that we had already incremented "pos" by one when adding the length of the prepath. This caused a buffer overrun by one byte. This patch fixes the problem by correcting the handling of "pos". Cc: # v3.8+ Reported-by: Marcus Moeller Reported-by: Ken Fallon Signed-off-by: Jeff Layton Signed-off-by: Steve French diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 5b97e56..e3bc39b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3279,8 +3279,8 @@ build_unc_path_to_root(const struct smb_vol *vol, pos = full_path + unc_len; if (pplen) { - *pos++ = CIFS_DIR_SEP(cifs_sb); - strncpy(pos, vol->prepath, pplen); + *pos = CIFS_DIR_SEP(cifs_sb); + strncpy(pos + 1, vol->prepath, pplen); pos += pplen; } -- cgit v0.10.2 From 35f7097fcedec63fcba1852dbee96f74a2d90878 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Sun, 26 May 2013 18:09:37 +0000 Subject: powerpc/tm: Make room for hypervisor in abort cause codes PAPR carves out 0xff-0xe0 for hypervisor use of transactional memory software abort cause codes. Unfortunately we don't respect this currently. Below fixes this to move our cause codes to below this region. Signed-off-by: Michael Neuling Cc: # 3.9 only Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index a613651..8f6a94b 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -113,14 +113,15 @@ /* Reason codes describing kernel causes for transaction aborts. By convention, bit0 is copied to TEXASR[56] (IBM bit 7) which is set if - the failure is persistent. + the failure is persistent. PAPR saves 0xff-0xe0 for the hypervisor. */ -#define TM_CAUSE_RESCHED 0xfe -#define TM_CAUSE_TLBI 0xfc -#define TM_CAUSE_FAC_UNAV 0xfa -#define TM_CAUSE_SYSCALL 0xf9 /* Persistent */ -#define TM_CAUSE_MISC 0xf6 -#define TM_CAUSE_SIGNAL 0xf4 +#define TM_CAUSE_PERSISTENT 0x01 +#define TM_CAUSE_RESCHED 0xde +#define TM_CAUSE_TLBI 0xdc +#define TM_CAUSE_FAC_UNAV 0xda +#define TM_CAUSE_SYSCALL 0xd8 /* future use */ +#define TM_CAUSE_MISC 0xd6 /* future use */ +#define TM_CAUSE_SIGNAL 0xd4 #if defined(CONFIG_PPC_BOOK3S_64) #define MSR_64BIT MSR_SF -- cgit v0.10.2 From 24b92375dc4ec8a15262e8aaaab60b7404d4b1e7 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Sun, 26 May 2013 18:09:38 +0000 Subject: powerpc/tm: Update cause codes documentation Signed-off-by: Michael Neuling Cc: # 3.9 only Signed-off-by: Benjamin Herrenschmidt diff --git a/Documentation/powerpc/transactional_memory.txt b/Documentation/powerpc/transactional_memory.txt index c907be4..84e04a0 100644 --- a/Documentation/powerpc/transactional_memory.txt +++ b/Documentation/powerpc/transactional_memory.txt @@ -155,6 +155,7 @@ These are defined in , and distinguish different reasons why the kernel aborted a transaction: TM_CAUSE_RESCHED Thread was rescheduled. + TM_CAUSE_TLBI Software TLB invalide. TM_CAUSE_FAC_UNAV FP/VEC/VSX unavailable trap. TM_CAUSE_SYSCALL Currently unused; future syscalls that must abort transactions for consistency will use this. -- cgit v0.10.2 From 6ce6c629fd8254b3177650de99699682ff7f6707 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Sun, 26 May 2013 18:09:39 +0000 Subject: powerpc/tm: Abort on emulation and alignment faults If we are emulating an instruction inside an active user transaction that touches memory, the kernel can't emulate it as it operates in transactional suspend context. We need to abort these transactions and send them back to userspace for the hardware to rollback. We can service these if the user transaction is in suspend mode, since the kernel will operate in the same suspend context. This adds a check to all alignment faults and to specific instruction emulations (only string instructions for now). If the user process is in an active (non-suspended) transaction, we abort the transaction go back to userspace allowing the HW to roll back the transaction and tell the user of the failure. This also adds new tm abort cause codes to report the reason of the persistent error to the user. Crappy test case here http://neuling.org/devel/junkcode/aligntm.c Signed-off-by: Michael Neuling Cc: # v3.9 Signed-off-by: Benjamin Herrenschmidt diff --git a/Documentation/powerpc/transactional_memory.txt b/Documentation/powerpc/transactional_memory.txt index 84e04a0..c54bf31 100644 --- a/Documentation/powerpc/transactional_memory.txt +++ b/Documentation/powerpc/transactional_memory.txt @@ -161,9 +161,12 @@ kernel aborted a transaction: transactions for consistency will use this. TM_CAUSE_SIGNAL Signal delivered. TM_CAUSE_MISC Currently unused. + TM_CAUSE_ALIGNMENT Alignment fault. + TM_CAUSE_EMULATE Emulation that touched memory. -These can be checked by the user program's abort handler as TEXASR[0:7]. - +These can be checked by the user program's abort handler as TEXASR[0:7]. If +bit 7 is set, it indicates that the error is consider persistent. For example +a TM_CAUSE_ALIGNMENT will be persistent while a TM_CAUSE_RESCHED will not.q GDB === diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 8f6a94b..d0528e0 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -122,6 +122,8 @@ #define TM_CAUSE_SYSCALL 0xd8 /* future use */ #define TM_CAUSE_MISC 0xd6 /* future use */ #define TM_CAUSE_SIGNAL 0xd4 +#define TM_CAUSE_ALIGNMENT 0xd2 +#define TM_CAUSE_EMULATE 0xd0 #if defined(CONFIG_PPC_BOOK3S_64) #define MSR_64BIT MSR_SF diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index a7a648f..f18c79c 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -53,6 +53,7 @@ #ifdef CONFIG_PPC64 #include #include +#include #endif #include #include @@ -932,6 +933,28 @@ static int emulate_isel(struct pt_regs *regs, u32 instword) return 0; } +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +static inline bool tm_abort_check(struct pt_regs *regs, int cause) +{ + /* If we're emulating a load/store in an active transaction, we cannot + * emulate it as the kernel operates in transaction suspended context. + * We need to abort the transaction. This creates a persistent TM + * abort so tell the user what caused it with a new code. + */ + if (MSR_TM_TRANSACTIONAL(regs->msr)) { + tm_enable(); + tm_abort(cause); + return true; + } + return false; +} +#else +static inline bool tm_abort_check(struct pt_regs *regs, int reason) +{ + return false; +} +#endif + static int emulate_instruction(struct pt_regs *regs) { u32 instword; @@ -971,6 +994,9 @@ static int emulate_instruction(struct pt_regs *regs) /* Emulate load/store string insn. */ if ((instword & PPC_INST_STRING_GEN_MASK) == PPC_INST_STRING) { + if (tm_abort_check(regs, + TM_CAUSE_EMULATE | TM_CAUSE_PERSISTENT)) + return -EINVAL; PPC_WARN_EMULATED(string, regs); return emulate_string_inst(regs, instword); } @@ -1148,6 +1174,9 @@ void alignment_exception(struct pt_regs *regs) if (!arch_irq_disabled_regs(regs)) local_irq_enable(); + if (tm_abort_check(regs, TM_CAUSE_ALIGNMENT | TM_CAUSE_PERSISTENT)) + goto bail; + /* we don't implement logging of alignment exceptions */ if (!(current->thread.align_ctl & PR_UNALIGN_SIGBUS)) fixed = fix_alignment(regs); -- cgit v0.10.2 From b75c100ef24894bd2c8b52e123bcc5f191c5d9fd Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Sun, 26 May 2013 18:30:56 +0000 Subject: powerpc/tm: Move TM abort cause codes to uapi These cause codes are usable by userspace, so let's export to uapi. Signed-off-by: Michael Neuling Cc: # v3.9 Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index d0528e0..4a9e408 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -111,20 +111,6 @@ #define MSR_TM_TRANSACTIONAL(x) (((x) & MSR_TS_MASK) == MSR_TS_T) #define MSR_TM_SUSPENDED(x) (((x) & MSR_TS_MASK) == MSR_TS_S) -/* Reason codes describing kernel causes for transaction aborts. By - convention, bit0 is copied to TEXASR[56] (IBM bit 7) which is set if - the failure is persistent. PAPR saves 0xff-0xe0 for the hypervisor. -*/ -#define TM_CAUSE_PERSISTENT 0x01 -#define TM_CAUSE_RESCHED 0xde -#define TM_CAUSE_TLBI 0xdc -#define TM_CAUSE_FAC_UNAV 0xda -#define TM_CAUSE_SYSCALL 0xd8 /* future use */ -#define TM_CAUSE_MISC 0xd6 /* future use */ -#define TM_CAUSE_SIGNAL 0xd4 -#define TM_CAUSE_ALIGNMENT 0xd2 -#define TM_CAUSE_EMULATE 0xd0 - #if defined(CONFIG_PPC_BOOK3S_64) #define MSR_64BIT MSR_SF diff --git a/arch/powerpc/include/asm/tm.h b/arch/powerpc/include/asm/tm.h index 4b4449a..9dfbc34 100644 --- a/arch/powerpc/include/asm/tm.h +++ b/arch/powerpc/include/asm/tm.h @@ -5,6 +5,8 @@ * Copyright 2012 Matt Evans & Michael Neuling, IBM Corporation. */ +#include + #ifdef CONFIG_PPC_TRANSACTIONAL_MEM extern void do_load_up_transact_fpu(struct thread_struct *thread); extern void do_load_up_transact_altivec(struct thread_struct *thread); diff --git a/arch/powerpc/include/uapi/asm/Kbuild b/arch/powerpc/include/uapi/asm/Kbuild index f7bca63..5182c86 100644 --- a/arch/powerpc/include/uapi/asm/Kbuild +++ b/arch/powerpc/include/uapi/asm/Kbuild @@ -40,6 +40,7 @@ header-y += statfs.h header-y += swab.h header-y += termbits.h header-y += termios.h +header-y += tm.h header-y += types.h header-y += ucontext.h header-y += unistd.h diff --git a/arch/powerpc/include/uapi/asm/tm.h b/arch/powerpc/include/uapi/asm/tm.h new file mode 100644 index 0000000..85059a0 --- /dev/null +++ b/arch/powerpc/include/uapi/asm/tm.h @@ -0,0 +1,18 @@ +#ifndef _ASM_POWERPC_TM_H +#define _ASM_POWERPC_TM_H + +/* Reason codes describing kernel causes for transaction aborts. By + * convention, bit0 is copied to TEXASR[56] (IBM bit 7) which is set if + * the failure is persistent. PAPR saves 0xff-0xe0 for the hypervisor. + */ +#define TM_CAUSE_PERSISTENT 0x01 +#define TM_CAUSE_RESCHED 0xde +#define TM_CAUSE_TLBI 0xdc +#define TM_CAUSE_FAC_UNAV 0xda +#define TM_CAUSE_SYSCALL 0xd8 /* future use */ +#define TM_CAUSE_MISC 0xd6 /* future use */ +#define TM_CAUSE_SIGNAL 0xd4 +#define TM_CAUSE_ALIGNMENT 0xd2 +#define TM_CAUSE_EMULATE 0xd0 + +#endif -- cgit v0.10.2 From 2b3f8e87cf99a33fb6faf5026d7147748bbd77b6 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Sun, 26 May 2013 18:09:41 +0000 Subject: powerpc/tm: Fix userspace stack corruption on signal delivery for active transactions When in an active transaction that takes a signal, we need to be careful with the stack. It's possible that the stack has moved back up after the tbegin. The obvious case here is when the tbegin is called inside a function that returns before a tend. In this case, the stack is part of the checkpointed transactional memory state. If we write over this non transactionally or in suspend, we are in trouble because if we get a tm abort, the program counter and stack pointer will be back at the tbegin but our in memory stack won't be valid anymore. To avoid this, when taking a signal in an active transaction, we need to use the stack pointer from the checkpointed state, rather than the speculated state. This ensures that the signal context (written tm suspended) will be written below the stack required for the rollback. The transaction is aborted becuase of the treclaim, so any memory written between the tbegin and the signal will be rolled back anyway. For signals taken in non-TM or suspended mode, we use the normal/non-checkpointed stack pointer. Tested with 64 and 32 bit signals Signed-off-by: Michael Neuling Cc: # v3.9 Signed-off-by: Benjamin Herrenschmidt diff --git a/Documentation/powerpc/transactional_memory.txt b/Documentation/powerpc/transactional_memory.txt index c54bf31..dc23e58 100644 --- a/Documentation/powerpc/transactional_memory.txt +++ b/Documentation/powerpc/transactional_memory.txt @@ -147,6 +147,25 @@ Example signal handler: fix_the_problem(ucp->dar); } +When in an active transaction that takes a signal, we need to be careful with +the stack. It's possible that the stack has moved back up after the tbegin. +The obvious case here is when the tbegin is called inside a function that +returns before a tend. In this case, the stack is part of the checkpointed +transactional memory state. If we write over this non transactionally or in +suspend, we are in trouble because if we get a tm abort, the program counter and +stack pointer will be back at the tbegin but our in memory stack won't be valid +anymore. + +To avoid this, when taking a signal in an active transaction, we need to use +the stack pointer from the checkpointed state, rather than the speculated +state. This ensures that the signal context (written tm suspended) will be +written below the stack required for the rollback. The transaction is aborted +becuase of the treclaim, so any memory written between the tbegin and the +signal will be rolled back anyway. + +For signals taken in non-TM or suspended mode, we use the +normal/non-checkpointed stack pointer. + Failure cause codes used by kernel ================================== diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 594db6b..14a6583 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -409,21 +409,16 @@ static inline void prefetchw(const void *x) #endif #ifdef CONFIG_PPC64 -static inline unsigned long get_clean_sp(struct pt_regs *regs, int is_32) +static inline unsigned long get_clean_sp(unsigned long sp, int is_32) { - unsigned long sp; - if (is_32) - sp = regs->gpr[1] & 0x0ffffffffUL; - else - sp = regs->gpr[1]; - + return sp & 0x0ffffffffUL; return sp; } #else -static inline unsigned long get_clean_sp(struct pt_regs *regs, int is_32) +static inline unsigned long get_clean_sp(unsigned long sp, int is_32) { - return regs->gpr[1]; + return sp; } #endif diff --git a/arch/powerpc/include/asm/signal.h b/arch/powerpc/include/asm/signal.h index fbe66c4..9322c28 100644 --- a/arch/powerpc/include/asm/signal.h +++ b/arch/powerpc/include/asm/signal.h @@ -3,5 +3,8 @@ #define __ARCH_HAS_SA_RESTORER #include +#include + +extern unsigned long get_tm_stackpointer(struct pt_regs *regs); #endif /* _ASM_POWERPC_SIGNAL_H */ diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index 577a8aa..457e97a 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "signal.h" @@ -30,13 +31,13 @@ int show_unhandled_signals = 1; /* * Allocate space for the signal frame */ -void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, +void __user * get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size, int is_32) { unsigned long oldsp, newsp; /* Default to using normal stack */ - oldsp = get_clean_sp(regs, is_32); + oldsp = get_clean_sp(sp, is_32); /* Check for alt stack */ if ((ka->sa.sa_flags & SA_ONSTACK) && @@ -175,3 +176,38 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags) user_enter(); } + +unsigned long get_tm_stackpointer(struct pt_regs *regs) +{ + /* When in an active transaction that takes a signal, we need to be + * careful with the stack. It's possible that the stack has moved back + * up after the tbegin. The obvious case here is when the tbegin is + * called inside a function that returns before a tend. In this case, + * the stack is part of the checkpointed transactional memory state. + * If we write over this non transactionally or in suspend, we are in + * trouble because if we get a tm abort, the program counter and stack + * pointer will be back at the tbegin but our in memory stack won't be + * valid anymore. + * + * To avoid this, when taking a signal in an active transaction, we + * need to use the stack pointer from the checkpointed state, rather + * than the speculated state. This ensures that the signal context + * (written tm suspended) will be written below the stack required for + * the rollback. The transaction is aborted becuase of the treclaim, + * so any memory written between the tbegin and the signal will be + * rolled back anyway. + * + * For signals taken in non-TM or suspended mode, we use the + * normal/non-checkpointed stack pointer. + */ + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + if (MSR_TM_ACTIVE(regs->msr)) { + tm_enable(); + tm_reclaim(¤t->thread, regs->msr, TM_CAUSE_SIGNAL); + if (MSR_TM_TRANSACTIONAL(regs->msr)) + return current->thread.ckpt_regs.gpr[1]; + } +#endif + return regs->gpr[1]; +} diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h index ec84c90..c69b9ae 100644 --- a/arch/powerpc/kernel/signal.h +++ b/arch/powerpc/kernel/signal.h @@ -12,7 +12,7 @@ extern void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags); -extern void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, +extern void __user * get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size, int is_32); extern int handle_signal32(unsigned long sig, struct k_sigaction *ka, diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 95068bf..201385c 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -503,12 +503,6 @@ static int save_tm_user_regs(struct pt_regs *regs, { unsigned long msr = regs->msr; - /* tm_reclaim rolls back all reg states, updating thread.ckpt_regs, - * thread.transact_fpr[], thread.transact_vr[], etc. - */ - tm_enable(); - tm_reclaim(¤t->thread, msr, TM_CAUSE_SIGNAL); - /* Make sure floating point registers are stored in regs */ flush_fp_to_thread(current); @@ -965,7 +959,7 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, /* Set up Signal Frame */ /* Put a Real Time Context onto stack */ - rt_sf = get_sigframe(ka, regs, sizeof(*rt_sf), 1); + rt_sf = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*rt_sf), 1); addr = rt_sf; if (unlikely(rt_sf == NULL)) goto badframe; @@ -1403,7 +1397,7 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka, unsigned long tramp; /* Set up Signal Frame */ - frame = get_sigframe(ka, regs, sizeof(*frame), 1); + frame = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*frame), 1); if (unlikely(frame == NULL)) goto badframe; sc = (struct sigcontext __user *) &frame->sctx; diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index c179428..3459473 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -154,11 +154,12 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * As above, but Transactional Memory is in use, so deliver sigcontexts * containing checkpointed and transactional register states. * - * To do this, we treclaim to gather both sets of registers and set up the - * 'normal' sigcontext registers with rolled-back register values such that a - * simple signal handler sees a correct checkpointed register state. - * If interested, a TM-aware sighandler can examine the transactional registers - * in the 2nd sigcontext to determine the real origin of the signal. + * To do this, we treclaim (done before entering here) to gather both sets of + * registers and set up the 'normal' sigcontext registers with rolled-back + * register values such that a simple signal handler sees a correct + * checkpointed register state. If interested, a TM-aware sighandler can + * examine the transactional registers in the 2nd sigcontext to determine the + * real origin of the signal. */ static long setup_tm_sigcontexts(struct sigcontext __user *sc, struct sigcontext __user *tm_sc, @@ -184,16 +185,6 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc, BUG_ON(!MSR_TM_ACTIVE(regs->msr)); - /* tm_reclaim rolls back all reg states, saving checkpointed (older) - * GPRs to thread.ckpt_regs and (if used) FPRs to (newer) - * thread.transact_fp and/or VRs to (newer) thread.transact_vr. - * THEN we save out FP/VRs, if necessary, to the checkpointed (older) - * thread.fr[]/vr[]s. The transactional (newer) GPRs are on the - * stack, in *regs. - */ - tm_enable(); - tm_reclaim(¤t->thread, msr, TM_CAUSE_SIGNAL); - flush_fp_to_thread(current); #ifdef CONFIG_ALTIVEC @@ -711,7 +702,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, unsigned long newsp = 0; long err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame), 0); + frame = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*frame), 0); if (unlikely(frame == NULL)) goto badframe; -- cgit v0.10.2 From e242114afff0a41550e174cd787cdbafd34625de Mon Sep 17 00:00:00 2001 From: chenhui zhao Date: Mon, 27 May 2013 21:59:43 +0000 Subject: powerpc/mpic: Fix irq distribution problem when MPIC_SINGLE_DEST_CPU For the mpic with a flag MPIC_SINGLE_DEST_CPU, only one bit should be set in interrupt destination registers. The code is applicable to 64-bit platforms as well as 32-bit. Signed-off-by: Zhao Chenhui Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 0a13ecb..3cc2f91 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -54,7 +54,7 @@ static DEFINE_RAW_SPINLOCK(mpic_lock); #ifdef CONFIG_PPC32 /* XXX for now */ #ifdef CONFIG_IRQ_ALL_CPUS -#define distribute_irqs (!(mpic->flags & MPIC_SINGLE_DEST_CPU)) +#define distribute_irqs (1) #else #define distribute_irqs (0) #endif @@ -1703,7 +1703,7 @@ void mpic_setup_this_cpu(void) * it differently, then we should make sure we also change the default * values of irq_desc[].affinity in irq.c. */ - if (distribute_irqs) { + if (distribute_irqs && !(mpic->flags & MPIC_SINGLE_DEST_CPU)) { for (i = 0; i < mpic->num_sources ; i++) mpic_irq_write(i, MPIC_INFO(IRQ_DESTINATION), mpic_irq_read(i, MPIC_INFO(IRQ_DESTINATION)) | msk); -- cgit v0.10.2 From 2ac6f427ad837a69561160b282eff80d9f0c2466 Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Tue, 28 May 2013 10:39:50 +0000 Subject: powerpc/cputable: Fix oprofile_cpu_type on power8 Maynard informed me that neither the oprofile kernel module nor oprofile userspace has been updated to support that "legacy" oprofile module interface for power8, which is indicated by "ppc64/power8." This results in no samples. The solution is to default to the "timer" type, instead. The raw entry also should be updated, as "ppc64/ibm-compat-v1" indicates to oprofile userspace to use "compatibility events" which are obsolete in ISA 2.07. Signed-off-by: Nishanth Aravamudan Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index c60bbec..b8808bc 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -453,7 +453,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .oprofile_type = PPC_OPROFILE_POWER4, - .oprofile_cpu_type = "ppc64/ibm-compat-v1", + .oprofile_cpu_type = 0, .cpu_setup = __setup_cpu_power8, .cpu_restore = __restore_cpu_power8, .platform = "power8", @@ -506,7 +506,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .dcache_bsize = 128, .num_pmcs = 6, .pmc_type = PPC_PMC_IBM, - .oprofile_cpu_type = "ppc64/power8", + .oprofile_cpu_type = 0, .oprofile_type = PPC_OPROFILE_POWER4, .cpu_setup = __setup_cpu_power8, .cpu_restore = __restore_cpu_power8, -- cgit v0.10.2 From a515348fc69fd1d9e8ebd34a16f1026d7fe32048 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 29 May 2013 19:34:27 +0000 Subject: powerpc/pseries: Kill all prefetch streams on context switch On context switch, we should have no prefetch streams leak from one userspace process to another. This frees up prefetch resources for the next process. Based on patch from Milton Miller. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index cea8496..2f1b6c5 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -523,6 +523,17 @@ END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,946) #define PPC440EP_ERR42 #endif +/* The following stops all load and store data streams associated with stream + * ID (ie. streams created explicitly). The embedded and server mnemonics for + * dcbt are different so we use machine "power4" here explicitly. + */ +#define DCBT_STOP_ALL_STREAM_IDS(scratch) \ +.machine push ; \ +.machine "power4" ; \ + lis scratch,0x60000000@h; \ + dcbt r0,scratch,0b01010; \ +.machine pop + /* * toreal/fromreal/tophys/tovirt macros. 32-bit BookE makes them * keep the address intact to be compatible with code shared with diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 0e9095e..246b11c 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -501,6 +501,13 @@ BEGIN_FTR_SECTION ldarx r6,0,r1 END_FTR_SECTION_IFSET(CPU_FTR_STCX_CHECKS_ADDRESS) +#ifdef CONFIG_PPC_BOOK3S +/* Cancel all explict user streams as they will have no use after context + * switch and will stop the HW from creating streams itself + */ + DCBT_STOP_ALL_STREAM_IDS(r6) +#endif + addi r6,r4,-THREAD /* Convert THREAD to 'current' */ std r6,PACACURRENT(r13) /* Set new 'current' */ -- cgit v0.10.2 From 280a5ba22ca35575721d42e536176a3561f4ec43 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 29 May 2013 19:34:29 +0000 Subject: powerpc/pseries: Improve stream generation comments in copypage/user No code changes, just documenting what's happening a little better. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/lib/copypage_power7.S b/arch/powerpc/lib/copypage_power7.S index 0ef75bf..395c594 100644 --- a/arch/powerpc/lib/copypage_power7.S +++ b/arch/powerpc/lib/copypage_power7.S @@ -28,13 +28,14 @@ _GLOBAL(copypage_power7) * aligned we don't need to clear the bottom 7 bits of either * address. */ - ori r9,r3,1 /* stream=1 */ + ori r9,r3,1 /* stream=1 => to */ #ifdef CONFIG_PPC_64K_PAGES - lis r7,0x0E01 /* depth=7, units=512 */ + lis r7,0x0E01 /* depth=7 + * units/cachelines=512 */ #else lis r7,0x0E00 /* depth=7 */ - ori r7,r7,0x1000 /* units=32 */ + ori r7,r7,0x1000 /* units/cachelines=32 */ #endif ori r10,r7,1 /* stream=1 */ @@ -43,12 +44,14 @@ _GLOBAL(copypage_power7) .machine push .machine "power4" - dcbt r0,r4,0b01000 - dcbt r0,r7,0b01010 - dcbtst r0,r9,0b01000 - dcbtst r0,r10,0b01010 + /* setup read stream 0 */ + dcbt r0,r4,0b01000 /* addr from */ + dcbt r0,r7,0b01010 /* length and depth from */ + /* setup write stream 1 */ + dcbtst r0,r9,0b01000 /* addr to */ + dcbtst r0,r10,0b01010 /* length and depth to */ eieio - dcbt r0,r8,0b01010 /* GO */ + dcbt r0,r8,0b01010 /* all streams GO */ .machine pop #ifdef CONFIG_ALTIVEC diff --git a/arch/powerpc/lib/copyuser_power7.S b/arch/powerpc/lib/copyuser_power7.S index 0d24ff1..d1f1179 100644 --- a/arch/powerpc/lib/copyuser_power7.S +++ b/arch/powerpc/lib/copyuser_power7.S @@ -318,12 +318,14 @@ err1; stb r0,0(r3) .machine push .machine "power4" - dcbt r0,r6,0b01000 - dcbt r0,r7,0b01010 - dcbtst r0,r9,0b01000 - dcbtst r0,r10,0b01010 + /* setup read stream 0 */ + dcbt r0,r6,0b01000 /* addr from */ + dcbt r0,r7,0b01010 /* length and depth from */ + /* setup write stream 1 */ + dcbtst r0,r9,0b01000 /* addr to */ + dcbtst r0,r10,0b01010 /* length and depth to */ eieio - dcbt r0,r8,0b01010 /* GO */ + dcbt r0,r8,0b01010 /* all streams GO */ .machine pop beq cr1,.Lunwind_stack_nonvmx_copy -- cgit v0.10.2 From 0608d692463598c1d6e826d9dd7283381b4f246c Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Fri, 31 May 2013 01:03:24 +0000 Subject: powerpc/mm: Always invalidate tlb on hpte invalidate and update If a hash bucket gets full, we "evict" a more/less random entry from it. When we do that we don't invalidate the TLB (hpte_remove) because we assume the old translation is still technically "valid". This implies that when we are invalidating or updating pte, even if HPTE entry is not valid we should do a tlb invalidate. This was a regression introduced by b1022fbd293564de91596b8775340cf41ad5214c Signed-off-by: Aneesh Kumar K.V Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index 6a2aead..4c122c3 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -336,11 +336,18 @@ static long native_hpte_updatepp(unsigned long slot, unsigned long newpp, hpte_v = hptep->v; actual_psize = hpte_actual_psize(hptep, psize); + /* + * We need to invalidate the TLB always because hpte_remove doesn't do + * a tlb invalidate. If a hash bucket gets full, we "evict" a more/less + * random entry from it. When we do that we don't invalidate the TLB + * (hpte_remove) because we assume the old translation is still + * technically "valid". + */ if (actual_psize < 0) { - native_unlock_hpte(hptep); - return -1; + actual_psize = psize; + ret = -1; + goto err_out; } - /* Even if we miss, we need to invalidate the TLB */ if (!HPTE_V_COMPARE(hpte_v, want_v)) { DBG_LOW(" -> miss\n"); ret = -1; @@ -350,6 +357,7 @@ static long native_hpte_updatepp(unsigned long slot, unsigned long newpp, hptep->r = (hptep->r & ~(HPTE_R_PP | HPTE_R_N)) | (newpp & (HPTE_R_PP | HPTE_R_N | HPTE_R_C)); } +err_out: native_unlock_hpte(hptep); /* Ensure it is out of the tlb too. */ @@ -409,7 +417,7 @@ static void native_hpte_updateboltedpp(unsigned long newpp, unsigned long ea, hptep = htab_address + slot; actual_psize = hpte_actual_psize(hptep, psize); if (actual_psize < 0) - return; + actual_psize = psize; /* Update the HPTE */ hptep->r = (hptep->r & ~(HPTE_R_PP | HPTE_R_N)) | @@ -437,21 +445,27 @@ static void native_hpte_invalidate(unsigned long slot, unsigned long vpn, hpte_v = hptep->v; actual_psize = hpte_actual_psize(hptep, psize); + /* + * We need to invalidate the TLB always because hpte_remove doesn't do + * a tlb invalidate. If a hash bucket gets full, we "evict" a more/less + * random entry from it. When we do that we don't invalidate the TLB + * (hpte_remove) because we assume the old translation is still + * technically "valid". + */ if (actual_psize < 0) { + actual_psize = psize; native_unlock_hpte(hptep); - local_irq_restore(flags); - return; + goto err_out; } - /* Even if we miss, we need to invalidate the TLB */ if (!HPTE_V_COMPARE(hpte_v, want_v)) native_unlock_hpte(hptep); else /* Invalidate the hpte. NOTE: this also unlocks it */ hptep->v = 0; +err_out: /* Invalidate the TLB */ tlbie(vpn, psize, actual_psize, ssize, local); - local_irq_restore(flags); } -- cgit v0.10.2 From f7b3367774f92a688d39ed767f0ae9b93af7873a Mon Sep 17 00:00:00 2001 From: Priyanka Jain Date: Fri, 31 May 2013 01:20:02 +0000 Subject: powerpc/32bit:Store temporary result in r0 instead of r8 Commit a9c4e541ea9b22944da356f2a9258b4eddcc953b "powerpc/kprobe: Complete kprobe and migrate exception frame" introduced a regression: While returning from exception handling in case of PREEMPT enabled, _TIF_NEED_RESCHED bit is checked in TI_FLAGS (thread_info flag) of current task. Only if this bit is set, it should continue with the process of calling preempt_schedule_irq() to schedule highest priority task if available. Current code assumes that r8 contains TI_FLAGS and check this for _TIF_NEED_RESCHED, but as r8 is modified in the code which executes before this check, r8 no longer contains the expected TI_FLAGS information. As a result check for comparison with _TIF_NEED_RESCHED was failing even if NEED_RESCHED bit is set in the current thread_info flag. Due to this, preempt_schedule_irq() and in turn scheduler was not getting called even if highest priority task is ready for execution. So, store temporary results in r0 instead of r8 to prevent r8 from getting modified as subsequent code is dependent on its value. Signed-off-by: Priyanka Jain CC: [v3.7+] Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index d22e73e..22b45a4 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -849,7 +849,7 @@ resume_kernel: /* check current_thread_info, _TIF_EMULATE_STACK_STORE */ CURRENT_THREAD_INFO(r9, r1) lwz r8,TI_FLAGS(r9) - andis. r8,r8,_TIF_EMULATE_STACK_STORE@h + andis. r0,r8,_TIF_EMULATE_STACK_STORE@h beq+ 1f addi r8,r1,INT_FRAME_SIZE /* Get the kprobed function entry */ -- cgit v0.10.2 From 8e44ddc3f34d22c55f2977ac8b160609935d37ca Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Thu, 23 May 2013 15:42:21 +0000 Subject: powerpc/kvm/book3s: Add support for H_IPOLL and H_XIRR_X in XICS emulation This adds the remaining two hypercalls defined by PAPR for manipulating the XICS interrupt controller, H_IPOLL and H_XIRR_X. H_IPOLL returns information about the priority and pending interrupts for a virtual cpu, without changing any state. H_XIRR_X is like H_XIRR in that it reads and acknowledges the highest-priority pending interrupt, but it also returns the timestamp (timebase register value) from when the interrupt was first received by the hypervisor. Currently we just return the current time, since we don't do any software queueing of virtual interrupts inside the XICS emulation code. These hcalls are not currently used by Linux guests, but may be in future. Signed-off-by: Paul Mackerras Acked-by: Scott Wood Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index cf4df8e..0c7f2bf 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -264,6 +264,7 @@ #define H_GET_MPP 0x2D4 #define H_HOME_NODE_ASSOCIATIVITY 0x2EC #define H_BEST_ENERGY 0x2F4 +#define H_XIRR_X 0x2FC #define H_RANDOM 0x300 #define H_COP 0x304 #define H_GET_MPP_X 0x314 diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 9de24f8..550f592 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -562,6 +562,8 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu) case H_CPPR: case H_EOI: case H_IPI: + case H_IPOLL: + case H_XIRR_X: if (kvmppc_xics_enabled(vcpu)) { ret = kvmppc_xics_hcall(vcpu, req); break; diff --git a/arch/powerpc/kvm/book3s_pr_papr.c b/arch/powerpc/kvm/book3s_pr_papr.c index b24309c..da0e0bc 100644 --- a/arch/powerpc/kvm/book3s_pr_papr.c +++ b/arch/powerpc/kvm/book3s_pr_papr.c @@ -257,6 +257,8 @@ int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd) case H_CPPR: case H_EOI: case H_IPI: + case H_IPOLL: + case H_XIRR_X: if (kvmppc_xics_enabled(vcpu)) return kvmppc_h_pr_xics_hcall(vcpu, cmd); break; diff --git a/arch/powerpc/kvm/book3s_xics.c b/arch/powerpc/kvm/book3s_xics.c index f7a1037..94c1dd4 100644 --- a/arch/powerpc/kvm/book3s_xics.c +++ b/arch/powerpc/kvm/book3s_xics.c @@ -650,6 +650,23 @@ static noinline int kvmppc_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, return H_SUCCESS; } +static int kvmppc_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server) +{ + union kvmppc_icp_state state; + struct kvmppc_icp *icp; + + icp = vcpu->arch.icp; + if (icp->server_num != server) { + icp = kvmppc_xics_find_server(vcpu->kvm, server); + if (!icp) + return H_PARAMETER; + } + state = ACCESS_ONCE(icp->state); + kvmppc_set_gpr(vcpu, 4, ((u32)state.cppr << 24) | state.xisr); + kvmppc_set_gpr(vcpu, 5, state.mfrr); + return H_SUCCESS; +} + static noinline void kvmppc_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr) { union kvmppc_icp_state old_state, new_state; @@ -787,6 +804,18 @@ int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 req) if (!xics || !vcpu->arch.icp) return H_HARDWARE; + /* These requests don't have real-mode implementations at present */ + switch (req) { + case H_XIRR_X: + res = kvmppc_h_xirr(vcpu); + kvmppc_set_gpr(vcpu, 4, res); + kvmppc_set_gpr(vcpu, 5, get_tb()); + return rc; + case H_IPOLL: + rc = kvmppc_h_ipoll(vcpu, kvmppc_get_gpr(vcpu, 4)); + return rc; + } + /* Check for real mode returning too hard */ if (xics->real_mode) return kvmppc_xics_rm_complete(vcpu, req); -- cgit v0.10.2 From f274ef8747d3be649bba8708696fb31cb00fa75a Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Tue, 21 May 2013 09:32:48 +0000 Subject: powerpc/pseries: Always enable CONFIG_HOTPLUG_CPU on PSERIES SMP MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Adam Lackorzynski reported the following build failure on !CONFIG_HOTPLUG_CPU configuration: CC arch/powerpc/kernel/rtas.o arch/powerpc/kernel/rtas.c: In function ‘rtas_cpu_state_change_mask’: arch/powerpc/kernel/rtas.c:843:4: error: implicit declaration of function ‘cpu_down’ [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[1]: *** [arch/powerpc/kernel/rtas.o] Error 1 make: *** [arch/powerpc/kernel] Error 2 The build fails because cpu_down() is defined only under CONFIG_HOTPLUG_CPU. Looking further, the mobility code in pseries is one of the call-sites which uses rtas_ibm_suspend_me(), which in turn calls rtas_cpu_state_change_mask(). And the mobility code is unconditionally compiled-in (it does not fall under any Kconfig option). And commit 120496ac (powerpc: Bring all threads online prior to migration/hibernation) which introduced this build regression is critical for the proper functioning of the migration code. So it appears that the only solution to this problem is to enable CONFIG_HOTPLUG_CPU if SMP is enabled on PPC_PSERIES platforms. So make that change in the Kconfig. Reported-by: Adam Lackorzynski Cc: stable@vger.kernel.org Signed-off-by: Srivatsa S. Bhat Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index 023b288..4459eff 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -19,6 +19,8 @@ config PPC_PSERIES select ZLIB_DEFLATE select PPC_DOORBELL select HAVE_CONTEXT_TRACKING + select HOTPLUG if SMP + select HOTPLUG_CPU if SMP default y config PPC_SPLPAR -- cgit v0.10.2 From 279838960484fa22d903086eea743a6b6700647d Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Thu, 16 May 2013 20:58:41 +0000 Subject: powerpc/pci: Remove the stale comments of pci_process_bridge_OF_ranges These comments already don't apply to the current code. So just remove them. Signed-off-by: Kevin Hao Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index e9acf50..8acd7c9 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -657,15 +657,6 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar, * ranges. However, some machines (thanks Apple !) tend to split their * space into lots of small contiguous ranges. So we have to coalesce. * - * - We can only cope with all memory ranges having the same offset - * between CPU addresses and PCI addresses. Unfortunately, some bridges - * are setup for a large 1:1 mapping along with a small "window" which - * maps PCI address 0 to some arbitrary high address of the CPU space in - * order to give access to the ISA memory hole. - * The way out of here that I've chosen for now is to always set the - * offset based on the first resource found, then override it if we - * have a different offset and the previous was set by an ISA hole. - * * - Some busses have IO space not starting at 0, which causes trouble with * the way we do our IO resource renumbering. The code somewhat deals with * it for 64 bits but I would expect problems on 32 bits. -- cgit v0.10.2 From 858957ab1e3a7ee29ed40309bdf0f1b7bcf5bf30 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Thu, 16 May 2013 20:58:42 +0000 Subject: powerpc/pci: Remove the unused variables in pci_process_bridge_OF_ranges The codes which ever used these two variables have gone. Throw away them too. Signed-off-by: Kevin Hao Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 8acd7c9..7f2273c 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -671,10 +671,9 @@ void pci_process_bridge_OF_ranges(struct pci_controller *hose, int rlen; int pna = of_n_addr_cells(dev); int np = pna + 5; - int memno = 0, isa_hole = -1; + int memno = 0; u32 pci_space; unsigned long long pci_addr, cpu_addr, pci_next, cpu_next, size; - unsigned long long isa_mb = 0; struct resource *res; printk(KERN_INFO "PCI host bridge %s %s ranges:\n", @@ -768,8 +767,6 @@ void pci_process_bridge_OF_ranges(struct pci_controller *hose, } /* Handles ISA memory hole space here */ if (pci_addr == 0) { - isa_mb = cpu_addr; - isa_hole = memno; if (primary || isa_mem_base == 0) isa_mem_base = cpu_addr; hose->isa_mem_phys = cpu_addr; -- cgit v0.10.2 From cbda6aa10bd2d97e38f4d26a03a0b2183ad580ba Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 15 May 2013 20:19:30 +0000 Subject: powerpc/perf: Revert to original NO_SIPR logic This is a revert and then some of commit 860aad7 "Add regs_no_sipr()". This workaround was only needed on early chip versions. As before NO_SIPR becomes a static flag of the PMU struct. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 426180b..b2f873b 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -110,7 +110,7 @@ static inline void power_pmu_bhrb_read(struct cpu_hw_events *cpuhw) {} static bool regs_use_siar(struct pt_regs *regs) { - return !!(regs->result & 1); + return !!regs->result; } /* @@ -181,11 +181,6 @@ static bool regs_sipr(struct pt_regs *regs) return !!(regs->dsisr & sipr); } -static bool regs_no_sipr(struct pt_regs *regs) -{ - return !!(regs->result & 2); -} - static inline u32 perf_flags_from_msr(struct pt_regs *regs) { if (regs->msr & MSR_PR) @@ -208,7 +203,7 @@ static inline u32 perf_get_misc_flags(struct pt_regs *regs) * SIAR which should give slightly more reliable * results */ - if (regs_no_sipr(regs)) { + if (ppmu->flags & PPMU_NO_SIPR) { unsigned long siar = mfspr(SPRN_SIAR); if (siar >= PAGE_OFFSET) return PERF_RECORD_MISC_KERNEL; @@ -239,22 +234,9 @@ static inline void perf_read_regs(struct pt_regs *regs) int use_siar; regs->dsisr = mmcra; - regs->result = 0; - - if (ppmu->flags & PPMU_NO_SIPR) - regs->result |= 2; - - /* - * On power8 if we're in random sampling mode, the SIER is updated. - * If we're in continuous sampling mode, we don't have SIPR. - */ - if (ppmu->flags & PPMU_HAS_SIER) { - if (marked) - regs->dar = mfspr(SPRN_SIER); - else - regs->result |= 2; - } + if (ppmu->flags & PPMU_HAS_SIER) + regs->dar = mfspr(SPRN_SIER); /* * If this isn't a PMU exception (eg a software event) the SIAR is @@ -279,12 +261,12 @@ static inline void perf_read_regs(struct pt_regs *regs) use_siar = 1; else if ((ppmu->flags & PPMU_NO_CONT_SAMPLING)) use_siar = 0; - else if (!regs_no_sipr(regs) && regs_sipr(regs)) + else if (!(ppmu->flags & PPMU_NO_SIPR) && regs_sipr(regs)) use_siar = 0; else use_siar = 1; - regs->result |= use_siar; + regs->result = use_siar; } /* -- cgit v0.10.2 From 58a032c3b106adcd2b83b7e631de3b79f238cdd2 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 15 May 2013 20:19:31 +0000 Subject: powerpc/perf: Add missing SIER support Commit 8f61aa3 "Add support for SIER" missed updates to siar_valid() and perf_get_data_addr(). In both cases we need to check the SIER instead of mmcra. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index b2f873b..845c867 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -136,22 +136,30 @@ static inline unsigned long perf_ip_adjust(struct pt_regs *regs) * If we're not doing instruction sampling, give them the SDAR * (sampled data address). If we are doing instruction sampling, then * only give them the SDAR if it corresponds to the instruction - * pointed to by SIAR; this is indicated by the [POWER6_]MMCRA_SDSYNC or - * the [POWER7P_]MMCRA_SDAR_VALID bit in MMCRA. + * pointed to by SIAR; this is indicated by the [POWER6_]MMCRA_SDSYNC, the + * [POWER7P_]MMCRA_SDAR_VALID bit in MMCRA, or the SDAR_VALID bit in SIER. */ static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp) { unsigned long mmcra = regs->dsisr; - unsigned long sdsync; + bool sdar_valid; - if (ppmu->flags & PPMU_SIAR_VALID) - sdsync = POWER7P_MMCRA_SDAR_VALID; - else if (ppmu->flags & PPMU_ALT_SIPR) - sdsync = POWER6_MMCRA_SDSYNC; - else - sdsync = MMCRA_SDSYNC; + if (ppmu->flags & PPMU_HAS_SIER) + sdar_valid = regs->dar & SIER_SDAR_VALID; + else { + unsigned long sdsync; + + if (ppmu->flags & PPMU_SIAR_VALID) + sdsync = POWER7P_MMCRA_SDAR_VALID; + else if (ppmu->flags & PPMU_ALT_SIPR) + sdsync = POWER6_MMCRA_SDSYNC; + else + sdsync = MMCRA_SDSYNC; - if (!(mmcra & MMCRA_SAMPLE_ENABLE) || (mmcra & sdsync)) + sdar_valid = mmcra & sdsync; + } + + if (!(mmcra & MMCRA_SAMPLE_ENABLE) || sdar_valid) *addrp = mfspr(SPRN_SDAR); } @@ -290,8 +298,13 @@ static inline int siar_valid(struct pt_regs *regs) unsigned long mmcra = regs->dsisr; int marked = mmcra & MMCRA_SAMPLE_ENABLE; - if ((ppmu->flags & PPMU_SIAR_VALID) && marked) - return mmcra & POWER7P_MMCRA_SIAR_VALID; + if (marked) { + if (ppmu->flags & PPMU_HAS_SIER) + return regs->dar & SIER_SIAR_VALID; + + if (ppmu->flags & PPMU_SIAR_VALID) + return mmcra & POWER7P_MMCRA_SIAR_VALID; + } return 1; } -- cgit v0.10.2 From fda3f402f446e82204266f4a3bf26912f2d55e75 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Fri, 31 May 2013 05:37:57 +0000 Subject: snmp6: remove IPSTATS_MIB_CSUMERRORS This stat is not relevant in IPv6, there is no checksum in IPv6 header. Just leave a comment to explain the hole. Signed-off-by: Nicolas Dichtel Acked-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c index f3c1ff4..51c3285 100644 --- a/net/ipv6/proc.c +++ b/net/ipv6/proc.c @@ -90,7 +90,7 @@ static const struct snmp_mib snmp6_ipstats_list[] = { SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS), SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS), SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS), - SNMP_MIB_ITEM("InCsumErrors", IPSTATS_MIB_CSUMERRORS), + /* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */ SNMP_MIB_SENTINEL }; -- cgit v0.10.2 From badec11b645e21acbc2411d7759e3efa559af443 Mon Sep 17 00:00:00 2001 From: Will Schmidt Date: Mon, 20 May 2013 05:04:18 +0000 Subject: powerpc/cputable: Fix typo on P7+ cputable entry Fix a typo in setting COMMON_USER2_POWER7 bits to .cpu_user_features2 cpu specs table. Signed-off-by: Will Schmidt Acked-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index b8808bc..1f0937d 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -482,7 +482,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .cpu_name = "POWER7+ (raw)", .cpu_features = CPU_FTRS_POWER7, .cpu_user_features = COMMON_USER_POWER7, - .cpu_user_features = COMMON_USER2_POWER7, + .cpu_user_features2 = COMMON_USER2_POWER7, .mmu_features = MMU_FTRS_POWER7, .icache_bsize = 128, .dcache_bsize = 128, -- cgit v0.10.2 From 9747ba6636be8a7e8ba83a1fb231d061ca318e4f Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Fri, 31 May 2013 11:57:26 +0000 Subject: net/core: __hw_addr_create_ex does not initialize sync_cnt The sync_cnt field is not being initialized, which can result in arbitrary values in the field. Fixed by initializing it to zero. Signed-off-by: Jay Vosburgh Reviewed-by: Vlad Yasevich Tested-by: Shawn Bohrer Signed-off-by: David S. Miller diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index c013f38..1f919d9 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -39,6 +39,7 @@ static int __hw_addr_create_ex(struct netdev_hw_addr_list *list, ha->refcount = 1; ha->global_use = global; ha->synced = sync; + ha->sync_cnt = 0; list_add_tail_rcu(&ha->list, &list->list); list->count++; -- cgit v0.10.2 From 60ba834c2fb65f2fafee47e03c258fac579d0591 Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Fri, 31 May 2013 11:57:27 +0000 Subject: net/core: __hw_addr_unsync_one "from" address not marked synced When an address is added to a subordinate interface (the "to" list), the address entry in the "from" list is not marked "synced" as the entry added to the "to" list is. When performing the unsync operation (e.g., dev_mc_unsync), __hw_addr_unsync_one calls __hw_addr_del_entry with the "synced" parameter set to true for the case when the address reference is being released from the "from" list. This causes a test inside to fail, with the result being that the reference count on the "from" address is not properly decremeted and the address on the "from" list will never be freed. Correct this by having __hw_addr_unsync_one call the __hw_addr_del_entry function with the "sync" flag set to false for the "remove from the from list" case. Signed-off-by: Jay Vosburgh Reviewed-by: Vlad Yasevich Tested-by: Shawn Bohrer Signed-off-by: David S. Miller diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 1f919d9..c858e81 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -160,7 +160,8 @@ static void __hw_addr_unsync_one(struct netdev_hw_addr_list *to_list, if (err) return; ha->sync_cnt--; - __hw_addr_del_entry(from_list, ha, false, true); + /* address on from list is not marked synced */ + __hw_addr_del_entry(from_list, ha, false, false); } static int __hw_addr_sync_multiple(struct netdev_hw_addr_list *to_list, -- cgit v0.10.2 From 29ca2f8fcc721517b83d0a560c47cee2dde827a6 Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Fri, 31 May 2013 11:57:28 +0000 Subject: net/core: __hw_addr_sync_one / _multiple broken Currently, __hw_addr_sync_one is called in a loop by __hw_addr_sync_multiple to sync each of a "from" device's hw addresses to a "to" device. __hw_addr_sync_one calls __hw_addr_add_ex to attempt to add each address. __hw_addr_add_ex is called with global=false, and sync=true. __hw_addr_add_ex checks to see if the new address matches an address already on the list. If so, it tests global and sync. In this case, sync=true, and it then checks if the address is already synced, and if so, returns 0. This 0 return causes __hw_addr_sync_one to increment the sync_cnt and refcount for the "from" list's address entry, even though the address is already synced and has a reference and sync_cnt. This will cause the sync_cnt and refcount to increment without bound every time an addresses is added to the "from" device and synced to the "to" device. The fix here has two parts: First, when __hw_addr_add_ex finds the address already exists and is synced, return -EEXIST instead of 0. Second, __hw_addr_sync_one checks the error return for -EEXIST, and if so, it (a) does not add a refcount/sync_cnt, and (b) returns 0 itself so that __hw_addr_sync_multiple will not return an error. Signed-off-by: Jay Vosburgh Reviewed-by: Vlad Yasevich Tested-by: Shawn Bohrer Signed-off-by: David S. Miller diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index c858e81..8e2c2ef 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -67,7 +67,7 @@ static int __hw_addr_add_ex(struct netdev_hw_addr_list *list, } if (sync) { if (ha->synced) - return 0; + return -EEXIST; else ha->synced = true; } @@ -140,10 +140,13 @@ static int __hw_addr_sync_one(struct netdev_hw_addr_list *to_list, err = __hw_addr_add_ex(to_list, ha->addr, addr_len, ha->type, false, true); - if (err) + if (err && err != -EEXIST) return err; - ha->sync_cnt++; - ha->refcount++; + + if (!err) { + ha->sync_cnt++; + ha->refcount++; + } return 0; } -- cgit v0.10.2 From b190a50875b95e58ebe2b00ed3bf7f1d44961471 Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Fri, 31 May 2013 11:57:29 +0000 Subject: net/core: dev_mc_sync_multiple calls wrong helper The dev_mc_sync_multiple function is currently calling __hw_addr_sync, and not __hw_addr_sync_multiple. This will result in addresses only being synced to the first device from the set. Corrected by calling the _multiple variant. Signed-off-by: Jay Vosburgh Reviewed-by: Vlad Yasevich Tested-by: Shawn Bohrer Signed-off-by: David S. Miller diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 8e2c2ef..6cda4e2 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -801,7 +801,7 @@ int dev_mc_sync_multiple(struct net_device *to, struct net_device *from) return -EINVAL; netif_addr_lock_nested(to); - err = __hw_addr_sync(&to->mc, &from->mc, to->addr_len); + err = __hw_addr_sync_multiple(&to->mc, &from->mc, to->addr_len); if (!err) __dev_set_rx_mode(to); netif_addr_unlock(to); -- cgit v0.10.2 From 1e2bd517c108816220f262d7954b697af03b5f9c Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Thu, 30 May 2013 06:45:27 +0000 Subject: udp6: Fix udp fragmentation for tunnel traffic. udp6 over GRE tunnel does not work after to GRE tso changes. GRE tso handler passes inner packet but keeps track of outer header start in SKB_GSO_CB(skb)->mac_offset. udp6 fragment need to take care of outer header, which start at the mac_offset, while adding fragment header. This bug is introduced by commit 68c3316311 (GRE: Add TCP segmentation offload for GRE). Reported-by: Dmitry Kravkov Signed-off-by: Pravin B Shelar Tested-by: Dmitry Kravkov Signed-off-by: David S. Miller diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 2e0ced1..9c676eae 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2852,6 +2852,21 @@ static inline int skb_tnl_header_len(const struct sk_buff *inner_skb) SKB_GSO_CB(inner_skb)->mac_offset; } +static inline int gso_pskb_expand_head(struct sk_buff *skb, int extra) +{ + int new_headroom, headroom; + int ret; + + headroom = skb_headroom(skb); + ret = pskb_expand_head(skb, extra, 0, GFP_ATOMIC); + if (ret) + return ret; + + new_headroom = skb_headroom(skb); + SKB_GSO_CB(skb)->mac_offset += (new_headroom - headroom); + return 0; +} + static inline bool skb_is_gso(const struct sk_buff *skb) { return skb_shinfo(skb)->gso_size; diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c index 3bb3a89..d3cfaf9 100644 --- a/net/ipv6/udp_offload.c +++ b/net/ipv6/udp_offload.c @@ -46,11 +46,12 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, unsigned int mss; unsigned int unfrag_ip6hlen, unfrag_len; struct frag_hdr *fptr; - u8 *mac_start, *prevhdr; + u8 *packet_start, *prevhdr; u8 nexthdr; u8 frag_hdr_sz = sizeof(struct frag_hdr); int offset; __wsum csum; + int tnl_hlen; mss = skb_shinfo(skb)->gso_size; if (unlikely(skb->len <= mss)) @@ -83,9 +84,11 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, skb->ip_summed = CHECKSUM_NONE; /* Check if there is enough headroom to insert fragment header. */ - if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) && - pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC)) - goto out; + tnl_hlen = skb_tnl_header_len(skb); + if (skb_headroom(skb) < (tnl_hlen + frag_hdr_sz)) { + if (gso_pskb_expand_head(skb, tnl_hlen + frag_hdr_sz)) + goto out; + } /* Find the unfragmentable header and shift it left by frag_hdr_sz * bytes to insert fragment header. @@ -93,11 +96,12 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr); nexthdr = *prevhdr; *prevhdr = NEXTHDR_FRAGMENT; - unfrag_len = skb_network_header(skb) - skb_mac_header(skb) + - unfrag_ip6hlen; - mac_start = skb_mac_header(skb); - memmove(mac_start-frag_hdr_sz, mac_start, unfrag_len); + unfrag_len = (skb_network_header(skb) - skb_mac_header(skb)) + + unfrag_ip6hlen + tnl_hlen; + packet_start = (u8 *) skb->head + SKB_GSO_CB(skb)->mac_offset; + memmove(packet_start-frag_hdr_sz, packet_start, unfrag_len); + SKB_GSO_CB(skb)->mac_offset -= frag_hdr_sz; skb->mac_header -= frag_hdr_sz; skb->network_header -= frag_hdr_sz; -- cgit v0.10.2 From e4c1721642bbd42d8142f4811cde0588c28db51d Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Wed, 29 May 2013 07:36:25 +0000 Subject: xfrm: force a garbage collection after deleting a policy In some cases after deleting a policy from the SPD the policy would remain in the dst/flow/route cache for an extended period of time which caused problems for SELinux as its dynamic network access controls key off of the number of XFRM policy and state entries. This patch corrects this problem by forcing a XFRM garbage collection whenever a policy is sucessfully removed. Reported-by: Ondrej Moris Signed-off-by: Paul Moore Signed-off-by: David S. Miller diff --git a/include/net/xfrm.h b/include/net/xfrm.h index ae16531..94ce082 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -1160,6 +1160,8 @@ static inline void xfrm_sk_free_policy(struct sock *sk) } } +extern void xfrm_garbage_collect(struct net *net); + #else static inline void xfrm_sk_free_policy(struct sock *sk) {} @@ -1194,6 +1196,9 @@ static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, { return 1; } +static inline void xfrm_garbage_collect(struct net *net) +{ +} #endif static __inline__ diff --git a/net/key/af_key.c b/net/key/af_key.c index 5b1e5af..c5fbd75 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -2366,6 +2366,8 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, const struct sa out: xfrm_pol_put(xp); + if (err == 0) + xfrm_garbage_collect(net); return err; } @@ -2615,6 +2617,8 @@ static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, const struct sadb_ out: xfrm_pol_put(xp); + if (delete && err == 0) + xfrm_garbage_collect(net); return err; } diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 23cea0f..ea970b8 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -2557,11 +2557,12 @@ static void __xfrm_garbage_collect(struct net *net) } } -static void xfrm_garbage_collect(struct net *net) +void xfrm_garbage_collect(struct net *net) { flow_cache_flush(); __xfrm_garbage_collect(net); } +EXPORT_SYMBOL(xfrm_garbage_collect); static void xfrm_garbage_collect_deferred(struct net *net) { diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index aa77874..3f565e4 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1681,6 +1681,8 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh, out: xfrm_pol_put(xp); + if (delete && err == 0) + xfrm_garbage_collect(net); return err; } -- cgit v0.10.2 From e4e8536f65b51ce91c30588b0925872bdfc60d03 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Wed, 29 May 2013 07:36:32 +0000 Subject: selinux: fix the labeled xfrm/IPsec reference count handling The SELinux labeled IPsec code was improperly handling its reference counting, dropping a reference on a delete operation instead of on a free/release operation. Reported-by: Ondrej Moris Signed-off-by: Paul Moore Signed-off-by: David S. Miller diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c index 8ab2951..d030818 100644 --- a/security/selinux/xfrm.c +++ b/security/selinux/xfrm.c @@ -316,6 +316,7 @@ int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, memcpy(new_ctx, old_ctx, sizeof(*new_ctx)); memcpy(new_ctx->ctx_str, old_ctx->ctx_str, new_ctx->ctx_len); + atomic_inc(&selinux_xfrm_refcount); *new_ctxp = new_ctx; } return 0; @@ -326,6 +327,7 @@ int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, */ void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx) { + atomic_dec(&selinux_xfrm_refcount); kfree(ctx); } @@ -335,17 +337,13 @@ void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx) int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) { const struct task_security_struct *tsec = current_security(); - int rc = 0; - if (ctx) { - rc = avc_has_perm(tsec->sid, ctx->ctx_sid, - SECCLASS_ASSOCIATION, - ASSOCIATION__SETCONTEXT, NULL); - if (rc == 0) - atomic_dec(&selinux_xfrm_refcount); - } + if (!ctx) + return 0; - return rc; + return avc_has_perm(tsec->sid, ctx->ctx_sid, + SECCLASS_ASSOCIATION, ASSOCIATION__SETCONTEXT, + NULL); } /* @@ -370,8 +368,8 @@ int selinux_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *uct */ void selinux_xfrm_state_free(struct xfrm_state *x) { - struct xfrm_sec_ctx *ctx = x->security; - kfree(ctx); + atomic_dec(&selinux_xfrm_refcount); + kfree(x->security); } /* @@ -381,17 +379,13 @@ int selinux_xfrm_state_delete(struct xfrm_state *x) { const struct task_security_struct *tsec = current_security(); struct xfrm_sec_ctx *ctx = x->security; - int rc = 0; - if (ctx) { - rc = avc_has_perm(tsec->sid, ctx->ctx_sid, - SECCLASS_ASSOCIATION, - ASSOCIATION__SETCONTEXT, NULL); - if (rc == 0) - atomic_dec(&selinux_xfrm_refcount); - } + if (!ctx) + return 0; - return rc; + return avc_has_perm(tsec->sid, ctx->ctx_sid, + SECCLASS_ASSOCIATION, ASSOCIATION__SETCONTEXT, + NULL); } /* -- cgit v0.10.2 From 6d7581e62f8be462440d7b22c6361f7c9fa4902b Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Wed, 29 May 2013 05:02:56 +0000 Subject: list: introduce list_first_entry_or_null non-rcu variant of list_first_or_null_rcu Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/include/linux/list.h b/include/linux/list.h index 6a1f8df..b83e565 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -362,6 +362,17 @@ static inline void list_splice_tail_init(struct list_head *list, list_entry((ptr)->next, type, member) /** + * list_first_entry_or_null - get the first element from a list + * @ptr: the list head to take the element from. + * @type: the type of the struct this is embedded in. + * @member: the name of the list_struct within the struct. + * + * Note that if the list is empty, it returns NULL. + */ +#define list_first_entry_or_null(ptr, type, member) \ + (!list_empty(ptr) ? list_first_entry(ptr, type, member) : NULL) + +/** * list_for_each - iterate over a list * @pos: the &struct list_head to use as a loop cursor. * @head: the head for your list. -- cgit v0.10.2 From 3f3e7ce4ff87c8ea69acaa7700699fb26baa2914 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Wed, 29 May 2013 05:02:57 +0000 Subject: team: fix port list dump for big number of ports In case the port list dump does not fit into one skb currently the dump would start over again. Fix this by continue from the last dumped port. Introduced by commit d90f889e9c (team: handle sending port list in the same way option list is sent) Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 7c43261..d016a76 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -2374,7 +2374,8 @@ static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, bool incomplete; int i; - port = list_first_entry(&team->port_list, struct team_port, list); + port = list_first_entry_or_null(&team->port_list, + struct team_port, list); start_again: err = __send_and_alloc_skb(&skb, team, portid, send_func); @@ -2402,8 +2403,8 @@ start_again: err = team_nl_fill_one_port_get(skb, one_port); if (err) goto errout; - } else { - list_for_each_entry(port, &team->port_list, list) { + } else if (port) { + list_for_each_entry_from(port, &team->port_list, list) { err = team_nl_fill_one_port_get(skb, port); if (err) { if (err == -EMSGSIZE) { -- cgit v0.10.2 From c802db1164f28e62c6a43132b8d290cb8113f2ac Mon Sep 17 00:00:00 2001 From: Haiyang Zhang Date: Tue, 28 May 2013 06:15:56 +0000 Subject: hyperv: Fix vlan_proto setting in netvsc_recv_callback() Since the recent addition of 8021AD, we need to set the new field vlan_proto in sk_buff. Otherwise, it will trigger BUG() call in vlan_proto_idx(). This patch fixes the problem. Signed-off-by: Haiyang Zhang Reviewed-by: K. Y. Srinivasan Signed-off-by: David S. Miller diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 088c554..ab2307b 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -284,7 +285,7 @@ int netvsc_recv_callback(struct hv_device *device_obj, skb->protocol = eth_type_trans(skb, net); skb->ip_summed = CHECKSUM_NONE; - skb->vlan_tci = packet->vlan_tci; + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), packet->vlan_tci); net->stats.rx_packets++; net->stats.rx_bytes += packet->total_data_buflen; -- cgit v0.10.2 From 3f108de96ba449a8df3d7e3c053bf890fee2cb95 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 27 May 2013 04:57:09 +0000 Subject: parisc: memory overflow, 'name' length is too short for using 'path.bc[i]' can be asigned by PCI_SLOT() which can '> 10', so sizeof(6 * "%u:" + "%u" + '\0') may be 21. Since 'name' length is 20, it may be memory overflow. And 'path.bc[i]' is 'unsigned char' for printing, we can be sure the max length of 'name' must be less than 28. So simplify thinking, we can use 28 instead of 20 directly, and do not think of whether 'patchc.bc[i]' can '> 100'. Signed-off-by: Chen Gang Signed-off-by: Helge Deller diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c index 5709c5e..14285ca 100644 --- a/arch/parisc/kernel/drivers.c +++ b/arch/parisc/kernel/drivers.c @@ -394,7 +394,7 @@ EXPORT_SYMBOL(print_pci_hwpath); static void setup_bus_id(struct parisc_device *padev) { struct hardware_path path; - char name[20]; + char name[28]; char *output = name; int i; -- cgit v0.10.2 From ae249b5fa27f9fba25aa59664d4338efc2dd2394 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 28 May 2013 20:35:54 +0000 Subject: parisc: fix kernel BUG at arch/parisc/include/asm/mmzone.h:50 With CONFIG_DISCONTIGMEM=y and multiple physical memory areas, cat /proc/kpageflags triggers this kernel bug: kernel BUG at arch/parisc/include/asm/mmzone.h:50! CPU: 2 PID: 7848 Comm: cat Tainted: G D W 3.10.0-rc3-64bit #44 IAOQ[0]: kpageflags_read0x128/0x238 IAOQ[1]: kpageflags_read0x12c/0x238 RP(r2): proc_reg_read0xbc/0x130 Backtrace: [<00000000402ca2d4>] proc_reg_read0xbc/0x130 [<0000000040235bcc>] vfs_read0xc4/0x1d0 [<0000000040235f0c>] SyS_read0x94/0xf0 [<0000000040105fc0>] syscall_exit0x0/0x14 kpageflags_read() walks through the whole memory, even if some memory areas are physically not available. So, we should better not BUG on an unavailable pfn in pfn_to_nid() but just return the expected value -1 or 0. Signed-off-by: Helge Deller diff --git a/arch/parisc/include/asm/mmzone.h b/arch/parisc/include/asm/mmzone.h index 0e625ab..cc50d33 100644 --- a/arch/parisc/include/asm/mmzone.h +++ b/arch/parisc/include/asm/mmzone.h @@ -39,17 +39,14 @@ extern unsigned char pfnnid_map[PFNNID_MAP_MAX]; static inline int pfn_to_nid(unsigned long pfn) { unsigned int i; - unsigned char r; if (unlikely(pfn_is_io(pfn))) return 0; i = pfn >> PFNNID_SHIFT; BUG_ON(i >= ARRAY_SIZE(pfnnid_map)); - r = pfnnid_map[i]; - BUG_ON(r == 0xff); - return (int)r; + return (int)pfnnid_map[i]; } static inline int pfn_valid(int pfn) -- cgit v0.10.2 From 766039022a480ede847659daaa78772bdcc598ae Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Wed, 29 May 2013 09:56:58 +0000 Subject: parisc: rename "CONFIG_PA7100" to "CONFIG_PA7000" There's a Makefile line setting cflags for CONFIG_PA7100. But that Kconfig macro doesn't exist. There is a Kconfig symbol PA7000, which covers both PA7000 and PA7100 processors. So let's use the corresponding Kconfig macro. Signed-off-by: Paul Bolle Signed-off-by: Helge Deller diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 1976900..96ec398 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -66,7 +66,7 @@ KBUILD_CFLAGS_KERNEL += -mlong-calls endif # select which processor to optimise for -cflags-$(CONFIG_PA7100) += -march=1.1 -mschedule=7100 +cflags-$(CONFIG_PA7000) += -march=1.1 -mschedule=7100 cflags-$(CONFIG_PA7200) += -march=1.1 -mschedule=7200 cflags-$(CONFIG_PA7100LC) += -march=1.1 -mschedule=7100LC cflags-$(CONFIG_PA7300LC) += -march=1.1 -mschedule=7300 -- cgit v0.10.2 From ea99b1adf22abd62bdcf14b1c9a0a4d3664eefd8 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 30 May 2013 01:18:43 +0000 Subject: parisc: kernel: using strlcpy() instead of strcpy() 'boot_args' is an input args, and 'boot_command_line' has a fix length. So use strlcpy() instead of strcpy() to avoid memory overflow. Signed-off-by: Chen Gang Acked-by: Kyle McMartin Signed-off-by: Helge Deller diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c index 76b63e7..1e95b20 100644 --- a/arch/parisc/kernel/setup.c +++ b/arch/parisc/kernel/setup.c @@ -69,7 +69,8 @@ void __init setup_cmdline(char **cmdline_p) /* called from hpux boot loader */ boot_command_line[0] = '\0'; } else { - strcpy(boot_command_line, (char *)__va(boot_args[1])); + strlcpy(boot_command_line, (char *)__va(boot_args[1]), + COMMAND_LINE_SIZE); #ifdef CONFIG_BLK_DEV_INITRD if (boot_args[2] != 0) /* did palo pass us a ramdisk? */ -- cgit v0.10.2 From 2b6bac9ee99fa7d60dfa0debd82ccf4217931b1e Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Thu, 30 May 2013 13:48:07 +0000 Subject: MAINTAINERS: update parisc architecture file list Signed-off-by: Helge Deller diff --git a/MAINTAINERS b/MAINTAINERS index 7714c3c..f35a259 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6088,7 +6088,15 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6.git T: git git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git S: Maintained F: arch/parisc/ +F: Documentation/parisc/ F: drivers/parisc/ +F: drivers/char/agp/parisc-agp.c +F: drivers/input/serio/gscps2.c +F: drivers/parport/parport_gsc.* +F: drivers/tty/serial/8250/8250_gsc.c +F: drivers/video/sti* +F: drivers/video/console/sti* +F: drivers/video/logo/logo_parisc* PC87360 HARDWARE MONITORING DRIVER M: Jim Cromie -- cgit v0.10.2 From b47d4934e71d918814aee4a1d0211f81329b767e Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 30 May 2013 11:45:39 -0600 Subject: parisc/PCI: Set type for LBA bus_num resource The non-PAT resource probing code failed to set the type of the LBA bus_num resource (30aa80da43 "parisc/PCI: register busn_res for root buses" did the corresponding thing for the PAT case). This causes incorrect resource assignments and a non-working stifb framebuffer on most parisc machines. Signed-off-by: Bjorn Helgaas Signed-off-by: Helge Deller diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index 2ef7103..5d25038 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -1096,6 +1096,7 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) r->name = "LBA PCI Busses"; r->start = lba_num & 0xff; r->end = (lba_num>>8) & 0xff; + r->flags = IORESOURCE_BUS; /* Set up local PCI Bus resources - we don't need them for ** Legacy boxes but it's nice to see in /proc/iomem. -- cgit v0.10.2 From b204a4d2d4f2061659bb5c33f5a4013fb0f6ffbe Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Fri, 31 May 2013 22:24:58 +0000 Subject: parisc/PCI: lba: fix: convert to pci_create_root_bus() for correct root bus resources (v2) commit dc7dce280a Author: Bjorn Helgaas Date: Fri Oct 28 16:27:27 2011 -0600 parisc/PCI: lba: convert to pci_create_root_bus() for correct root bus resources Supply root bus resources to pci_create_root_bus() so they're correct immediately. This fixes the problem of "early" and "header" quirks seeing incorrect root bus resources. added tests for elmmio_space.start while it should use elmmio_space.flags. This for example led to incorrect resource assignments and a non-working stifb framebuffer on most parisc machines. LBA 10:1: PCI host bridge to bus 0000:01 pci_bus 0000:01: root bus resource [io 0x12000-0x13fff] (bus address [0x2000-0x3fff]) pci_bus 0000:01: root bus resource [mem 0xfffffffffa000000-0xfffffffffbffffff] (bus address [0xfa000000-0xfbffffff]) pci_bus 0000:01: root bus resource [mem 0xfffffffff4800000-0xfffffffff4ffffff] (bus address [0xf4800000-0xf4ffffff]) pci_bus 0000:01: root bus resource [??? 0x00000001 flags 0x0] Signed-off-by: Helge Deller Acked-by: Bjorn Helgaas diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index 5d25038..1f05913 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -668,7 +668,7 @@ lba_fixup_bus(struct pci_bus *bus) BUG(); } - if (ldev->hba.elmmio_space.start) { + if (ldev->hba.elmmio_space.flags) { err = request_resource(&iomem_resource, &(ldev->hba.elmmio_space)); if (err < 0) { @@ -993,7 +993,7 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) case PAT_LMMIO: /* used to fix up pre-initialized MEM BARs */ - if (!lba_dev->hba.lmmio_space.start) { + if (!lba_dev->hba.lmmio_space.flags) { sprintf(lba_dev->hba.lmmio_name, "PCI%02x LMMIO", (int)lba_dev->hba.bus_num.start); @@ -1001,7 +1001,7 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) io->start; r = &lba_dev->hba.lmmio_space; r->name = lba_dev->hba.lmmio_name; - } else if (!lba_dev->hba.elmmio_space.start) { + } else if (!lba_dev->hba.elmmio_space.flags) { sprintf(lba_dev->hba.elmmio_name, "PCI%02x ELMMIO", (int)lba_dev->hba.bus_num.start); @@ -1495,7 +1495,7 @@ lba_driver_probe(struct parisc_device *dev) pci_add_resource_offset(&resources, &lba_dev->hba.io_space, HBA_PORT_BASE(lba_dev->hba.hba_num)); - if (lba_dev->hba.elmmio_space.start) + if (lba_dev->hba.elmmio_space.flags) pci_add_resource_offset(&resources, &lba_dev->hba.elmmio_space, lba_dev->hba.lmmio_space_offset); if (lba_dev->hba.lmmio_space.flags) -- cgit v0.10.2 From c218c713c56b01d4a1cd69390f675cc44857f5fd Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Thu, 30 May 2013 16:24:46 +0000 Subject: parport_pc: disable PARPORT_PC_SUPERIO on parisc architecture If enabled, CONFIG_PARPORT_PC_SUPERIO scans on PC-like hardware for various super-io chips by accessing i/o ports in a range which will crash any parisc hardware at once. In addition, parisc has it's own incompatible superio chip (CONFIG_SUPERIO), so if we disable PARPORT_PC_SUPERIO completely for parisc we can avoid that people by accident enable the parport_pc superio option too. Signed-off-by: Helge Deller diff --git a/drivers/parport/Kconfig b/drivers/parport/Kconfig index 24e12d4..a505760 100644 --- a/drivers/parport/Kconfig +++ b/drivers/parport/Kconfig @@ -71,7 +71,7 @@ config PARPORT_PC_FIFO config PARPORT_PC_SUPERIO bool "SuperIO chipset support" - depends on PARPORT_PC + depends on PARPORT_PC && !PARISC help Saying Y here enables some probes for Super-IO chipsets in order to find out things like base addresses, IRQ lines and DMA channels. It -- cgit v0.10.2 From 4edb38695d9a3cd62739f8595e21f36f0aabf4c2 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Thu, 30 May 2013 21:06:39 +0000 Subject: parisc: parport0: fix this legacy no-device port driver! Fix the above kernel error from parport_announce_port() on 32bit GSC machines (e.g. B160L). The parport driver requires now a pointer to the device struct. Signed-off-by: Helge Deller diff --git a/drivers/parport/parport_gsc.c b/drivers/parport/parport_gsc.c index a5251cb..6e3a60c 100644 --- a/drivers/parport/parport_gsc.c +++ b/drivers/parport/parport_gsc.c @@ -234,7 +234,7 @@ static int parport_PS2_supported(struct parport *pb) struct parport *parport_gsc_probe_port(unsigned long base, unsigned long base_hi, int irq, - int dma, struct pci_dev *dev) + int dma, struct parisc_device *padev) { struct parport_gsc_private *priv; struct parport_operations *ops; @@ -258,7 +258,6 @@ struct parport *parport_gsc_probe_port(unsigned long base, priv->ctr_writable = 0xff; priv->dma_buf = 0; priv->dma_handle = 0; - priv->dev = dev; p->base = base; p->base_hi = base_hi; p->irq = irq; @@ -282,6 +281,7 @@ struct parport *parport_gsc_probe_port(unsigned long base, return NULL; } + p->dev = &padev->dev; p->base_hi = base_hi; p->modes = tmp.modes; p->size = (p->modes & PARPORT_MODE_EPP)?8:3; @@ -373,7 +373,7 @@ static int parport_init_chip(struct parisc_device *dev) } p = parport_gsc_probe_port(port, 0, dev->irq, - /* PARPORT_IRQ_NONE */ PARPORT_DMA_NONE, NULL); + /* PARPORT_IRQ_NONE */ PARPORT_DMA_NONE, dev); if (p) parport_count++; dev_set_drvdata(&dev->dev, p); diff --git a/drivers/parport/parport_gsc.h b/drivers/parport/parport_gsc.h index fc9c37c..8122147 100644 --- a/drivers/parport/parport_gsc.h +++ b/drivers/parport/parport_gsc.h @@ -217,6 +217,6 @@ extern void parport_gsc_dec_use_count(void); extern struct parport *parport_gsc_probe_port(unsigned long base, unsigned long base_hi, int irq, int dma, - struct pci_dev *dev); + struct parisc_device *padev); #endif /* __DRIVERS_PARPORT_PARPORT_GSC_H */ -- cgit v0.10.2 From f3284f91535cc2e1406b7efe27a1de96c96c19b4 Mon Sep 17 00:00:00 2001 From: Maarten ter Huurne Date: Fri, 31 May 2013 16:45:13 +0200 Subject: regmap: rbtree: Fixed node range check on sync A node starting before the minimum register is no reason to reject it, since its end could be in range. The check for the end already exists two lines lower, so we can just remove the incorrect check. Signed-off-by: Maarten ter Huurne Signed-off-by: Mark Brown diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index b4e343b..02f490b 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -391,8 +391,6 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min, for (node = rb_first(&rbtree_ctx->root); node; node = rb_next(node)) { rbnode = rb_entry(node, struct regcache_rbtree_node, node); - if (rbnode->base_reg < min) - continue; if (rbnode->base_reg > max) break; if (rbnode->base_reg + rbnode->blklen < min) -- cgit v0.10.2 From d9f1f489c034829c1082c0e7efa09450e716d23e Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 1 Jun 2013 19:31:15 +0100 Subject: MAINTAINERS: Remove myself from Wolfson maintainers I no longer work for Wolfson. Signed-off-by: Mark Brown diff --git a/MAINTAINERS b/MAINTAINERS index fd3a495..859cf06 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8985,7 +8985,7 @@ S: Maintained F: drivers/net/wireless/wl3501* WM97XX TOUCHSCREEN DRIVERS -M: Mark Brown +M: Mark Brown M: Liam Girdwood L: linux-input@vger.kernel.org T: git git://opensource.wolfsonmicro.com/linux-2.6-touch @@ -8995,7 +8995,6 @@ F: drivers/input/touchscreen/*wm97* F: include/linux/wm97xx.h WOLFSON MICROELECTRONICS DRIVERS -M: Mark Brown L: patches@opensource.wolfsonmicro.com T: git git://opensource.wolfsonmicro.com/linux-2.6-asoc T: git git://opensource.wolfsonmicro.com/linux-2.6-audioplus -- cgit v0.10.2 From af1d486c18bad7820b0ca52b413458914231102c Mon Sep 17 00:00:00 2001 From: "lan,Tianyu" Date: Tue, 28 May 2013 02:25:33 +0000 Subject: x86 / platform / hp_wmi: Fix bluetooth_rfkill misuse in hp_wmi_rfkill_setup() HP wmi platform driver fails to initialize GPS and causes poweroff failure in HP Elitebook 6930p. Call Trace: [] hp_wmi_bios_setup+0x25a/0x3a0 [hp_wmi] [] platform_drv_probe+0x3c/0x70 [] ? driver_sysfs_add+0x7a/0xb0 [] driver_probe_device+0x87/0x3a0 [] __driver_attach+0x93/0xa0 [] ? __device_attach+0x40/0x40 [] bus_for_each_dev+0x63/0xa0 [] driver_attach+0x1e/0x20 [] bus_add_driver+0x1f8/0x2b0 [] driver_register+0x71/0x150 [] platform_driver_register+0x46/0x50 [] platform_driver_probe+0x1b/0xa0 [] hp_wmi_init+0x1be/0x1fb [hp_wmi] [] ? hp_wmi_bios_setup+0x3a0/0x3a0 [hp_wmi] [] do_one_initcall+0x10a/0x160 [] load_module+0x1b46/0x2640 [] ? ddebug_proc_write+0xf0/0xf0 [] sys_init_module+0xa2/0xf0 [] system_call_fastpath+0x1a/0x1f Code: 48 ff ff ff 80 7b 24 00 74 d2 41 83 e5 01 45 38 ec 74 c9 48 8d bb a0 03 00 00 e8 ed fb aa e0 5b 41 5c 41 5d 44 89 f0 41 5e 5d c3 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 RIP [] rfkill_set_hw_state+0x9f/0xb0 [rfkill] RSP Check code and find this error is caused by misusing variable bluetooth_rfkill where gps_rfkill should be. Reported-and-tested-by: Iru Cai References: https://bugzilla.kernel.org/show_bug.cgi?id=58401 Cc: All Signed-off-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c index 8df0c5a..d111c86 100644 --- a/drivers/platform/x86/hp-wmi.c +++ b/drivers/platform/x86/hp-wmi.c @@ -703,7 +703,7 @@ static int hp_wmi_rfkill_setup(struct platform_device *device) } rfkill_init_sw_state(gps_rfkill, hp_wmi_get_sw_state(HPWMI_GPS)); - rfkill_set_hw_state(bluetooth_rfkill, + rfkill_set_hw_state(gps_rfkill, hp_wmi_get_hw_state(HPWMI_GPS)); err = rfkill_register(gps_rfkill); if (err) -- cgit v0.10.2 From fedbe9bc6fd3e14b1ffbb3dac407777ac4a3650c Mon Sep 17 00:00:00 2001 From: Alex Hung Date: Tue, 28 May 2013 02:05:09 +0000 Subject: ACPI / video: ignore BIOS initial backlight value for HP m4 On HP m4 lapops, BIOS reports minimum backlight on boot and causes backlight to dim completely. This ignores the initial backlight values and set to max brightness. References: https://bugs.launchpad.net/bugs/1184501 Cc: All Signed-off-by: Alex Hung Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 5b32e15..d0937ab 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -464,6 +464,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"), }, }, + { + .callback = video_ignore_initial_backlight, + .ident = "HP Pavilion m4", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"), + }, + }, {} }; -- cgit v0.10.2 From 780a6ec640a3fed671fc2c40e4dd30c03eca3ac3 Mon Sep 17 00:00:00 2001 From: Ash Willis Date: Wed, 29 May 2013 01:27:59 +0000 Subject: ACPI / video: ignore BIOS initial backlight value for HP Pavilion g6 This patch addresses kernel bug 56661. BIOS reports an incorrect backlight value, causing the driver to switch off the backlight completely during startup. This patch ignores the incorrect value from BIOS. References: https://bugzilla.kernel.org/show_bug.cgi?id=56661 Signed-off-by: Ash Willis Cc: All Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index d0937ab..5d7075d 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -458,6 +458,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { }, { .callback = video_ignore_initial_backlight, + .ident = "HP Pavilion g6 Notebook PC", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"), + }, + }, + { + .callback = video_ignore_initial_backlight, .ident = "HP 1000 Notebook PC", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), -- cgit v0.10.2 From 52a2a1087b5924de00484f35ef5e2a73f61dbd22 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sat, 1 Jun 2013 02:38:35 +0400 Subject: sata_rcar: fix interrupt handling The driver's interrupt handling code is too picky in deciding whether it should handle an interrupt or not which causes completely unneeded spurious interrupts. Thus make sata_rcar_{ata|serr}_interrupt() *void*; add ATA status register read to sata_rcar_ata_interrupt() to clear an unexpected ATA interrupt -- it doesn't get cleared by writing to the SATAINTSTAT register in the interrupt mode we use. Also, in sata_rcar_ata_interrupt() we should check SATAINTSTAT register only for enabled interrupts and we should clear only those interrupts that we have read as active first time around, because else we have a race and risk clearing an interrupt that can occur between read and write of the SATAINTSTAT register and never registering it... Signed-off-by: Sergei Shtylyov Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c index a8e091a..249c8a2 100644 --- a/drivers/ata/sata_rcar.c +++ b/drivers/ata/sata_rcar.c @@ -619,17 +619,16 @@ static struct ata_port_operations sata_rcar_port_ops = { .bmdma_status = sata_rcar_bmdma_status, }; -static int sata_rcar_serr_interrupt(struct ata_port *ap) +static void sata_rcar_serr_interrupt(struct ata_port *ap) { struct sata_rcar_priv *priv = ap->host->private_data; struct ata_eh_info *ehi = &ap->link.eh_info; int freeze = 0; - int handled = 0; u32 serror; serror = ioread32(priv->base + SCRSERR_REG); if (!serror) - return 0; + return; DPRINTK("SError @host_intr: 0x%x\n", serror); @@ -642,7 +641,6 @@ static int sata_rcar_serr_interrupt(struct ata_port *ap) ata_ehi_push_desc(ehi, "%s", "hotplug"); freeze = serror & SERR_COMM_WAKE ? 0 : 1; - handled = 1; } /* freeze or abort */ @@ -650,11 +648,9 @@ static int sata_rcar_serr_interrupt(struct ata_port *ap) ata_port_freeze(ap); else ata_port_abort(ap); - - return handled; } -static int sata_rcar_ata_interrupt(struct ata_port *ap) +static void sata_rcar_ata_interrupt(struct ata_port *ap) { struct ata_queued_cmd *qc; int handled = 0; @@ -663,7 +659,9 @@ static int sata_rcar_ata_interrupt(struct ata_port *ap) if (qc) handled |= ata_bmdma_port_intr(ap, qc); - return handled; + /* be sure to clear ATA interrupt */ + if (!handled) + sata_rcar_check_status(ap); } static irqreturn_t sata_rcar_interrupt(int irq, void *dev_instance) @@ -678,20 +676,21 @@ static irqreturn_t sata_rcar_interrupt(int irq, void *dev_instance) spin_lock_irqsave(&host->lock, flags); sataintstat = ioread32(priv->base + SATAINTSTAT_REG); + sataintstat &= SATA_RCAR_INT_MASK; if (!sataintstat) goto done; /* ack */ - iowrite32(sataintstat & ~SATA_RCAR_INT_MASK, - priv->base + SATAINTSTAT_REG); + iowrite32(~sataintstat & 0x7ff, priv->base + SATAINTSTAT_REG); ap = host->ports[0]; if (sataintstat & SATAINTSTAT_ATA) - handled |= sata_rcar_ata_interrupt(ap); + sata_rcar_ata_interrupt(ap); if (sataintstat & SATAINTSTAT_SERR) - handled |= sata_rcar_serr_interrupt(ap); + sata_rcar_serr_interrupt(ap); + handled = 1; done: spin_unlock_irqrestore(&host->lock, flags); -- cgit v0.10.2 From d683b96b072dc4680fc74964eca77e6a23d1fa6e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 2 Jun 2013 17:11:17 +0900 Subject: Linux 3.10-rc4 diff --git a/Makefile b/Makefile index 73e20db..49aa84b 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 10 SUBLEVEL = 0 -EXTRAVERSION = -rc3 +EXTRAVERSION = -rc4 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v0.10.2 From 13731d862cf5219216533a3b0de052cee4cc5038 Mon Sep 17 00:00:00 2001 From: Jongsung Kim Date: Wed, 29 May 2013 22:07:39 -0600 Subject: ARM: bcm2835: override the HW UART periphid Stephen Warren reported the recent commit 78506f2 (add support for extended FIFO-size of PL011-r1p5) breaks the serial port on the BCM2835 ARM SoC. A UART compatible with the ARM PL011-r1p5 should have 32-deep FIFOs. The BCM2835 UART just looks like an ARM PL011-r1p5, but has 16-deep FIFOs just like PL011-r1p4 or earlier revisions. As a workaround for this compatibility issue, this patch overrides the HW UART periphid register values with the actually compatible UART periphid 0x00241011 (r1p3 or r1p4). Reported-by: Stephen Warren Signed-off-by: Jongsung Kim Signed-off-by: Stephen Warren Signed-off-by: Olof Johansson diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi index f0052dc..1e12aef 100644 --- a/arch/arm/boot/dts/bcm2835.dtsi +++ b/arch/arm/boot/dts/bcm2835.dtsi @@ -44,6 +44,7 @@ reg = <0x7e201000 0x1000>; interrupts = <2 25>; clock-frequency = <3000000>; + arm,primecell-periphid = <0x00241011>; }; gpio: gpio { -- cgit v0.10.2 From c87a124a5d5e8cf8e21c4363c3372bcaf53ea190 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 29 May 2013 09:06:27 +0000 Subject: net: force a reload of first item in hlist_nulls_for_each_entry_rcu Roman Gushchin discovered that udp4_lib_lookup2() was not reloading first item in the rcu protected list, in case the loop was restarted. This produced soft lockups as in https://lkml.org/lkml/2013/4/16/37 rcu_dereference(X)/ACCESS_ONCE(X) seem to not work as intended if X is ptr->field : In some cases, gcc caches the value or ptr->field in a register. Use a barrier() to disallow such caching, as documented in Documentation/atomic_ops.txt line 114 Thanks a lot to Roman for providing analysis and numerous patches. Diagnosed-by: Roman Gushchin Signed-off-by: Eric Dumazet Reported-by: Boris Zhmurov Signed-off-by: Roman Gushchin Acked-by: Paul E. McKenney Signed-off-by: David S. Miller diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h index 2ae1371..1c33dd7 100644 --- a/include/linux/rculist_nulls.h +++ b/include/linux/rculist_nulls.h @@ -105,9 +105,14 @@ static inline void hlist_nulls_add_head_rcu(struct hlist_nulls_node *n, * @head: the head for your list. * @member: the name of the hlist_nulls_node within the struct. * + * The barrier() is needed to make sure compiler doesn't cache first element [1], + * as this loop can be restarted [2] + * [1] Documentation/atomic_ops.txt around line 114 + * [2] Documentation/RCU/rculist_nulls.txt around line 146 */ #define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \ - for (pos = rcu_dereference_raw(hlist_nulls_first_rcu(head)); \ + for (({barrier();}), \ + pos = rcu_dereference_raw(hlist_nulls_first_rcu(head)); \ (!is_a_nulls(pos)) && \ ({ tpos = hlist_nulls_entry(pos, typeof(*tpos), member); 1; }); \ pos = rcu_dereference_raw(hlist_nulls_next_rcu(pos))) -- cgit v0.10.2 From 01cb71d2d47b78354358e4bb938bb06323e17498 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 2 Jun 2013 13:55:05 +0000 Subject: net_sched: restore "overhead xxx" handling commit 56b765b79 ("htb: improved accuracy at high rates") broke the "overhead xxx" handling, as well as the "linklayer atm" attribute. tc class add ... htb rate X ceil Y linklayer atm overhead 10 This patch restores the "overhead xxx" handling, for htb, tbf and act_police The "linklayer atm" thing needs a separate fix. Reported-by: Jesper Dangaard Brouer Signed-off-by: Eric Dumazet Cc: Vimalkumar Cc: Jiri Pirko Signed-off-by: David S. Miller diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index f10818f..e7f4e21 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -679,22 +679,26 @@ static inline struct sk_buff *skb_act_clone(struct sk_buff *skb, gfp_t gfp_mask, #endif struct psched_ratecfg { - u64 rate_bps; - u32 mult; - u32 shift; + u64 rate_bps; + u32 mult; + u16 overhead; + u8 shift; }; static inline u64 psched_l2t_ns(const struct psched_ratecfg *r, unsigned int len) { - return ((u64)len * r->mult) >> r->shift; + return ((u64)(len + r->overhead) * r->mult) >> r->shift; } -extern void psched_ratecfg_precompute(struct psched_ratecfg *r, u32 rate); +extern void psched_ratecfg_precompute(struct psched_ratecfg *r, const struct tc_ratespec *conf); -static inline u32 psched_ratecfg_getrate(const struct psched_ratecfg *r) +static inline void psched_ratecfg_getrate(struct tc_ratespec *res, + const struct psched_ratecfg *r) { - return r->rate_bps >> 3; + memset(res, 0, sizeof(*res)); + res->rate = r->rate_bps >> 3; + res->overhead = r->overhead; } #endif diff --git a/net/sched/act_police.c b/net/sched/act_police.c index 823463a..189e3c5 100644 --- a/net/sched/act_police.c +++ b/net/sched/act_police.c @@ -231,14 +231,14 @@ override: } if (R_tab) { police->rate_present = true; - psched_ratecfg_precompute(&police->rate, R_tab->rate.rate); + psched_ratecfg_precompute(&police->rate, &R_tab->rate); qdisc_put_rtab(R_tab); } else { police->rate_present = false; } if (P_tab) { police->peak_present = true; - psched_ratecfg_precompute(&police->peak, P_tab->rate.rate); + psched_ratecfg_precompute(&police->peak, &P_tab->rate); qdisc_put_rtab(P_tab); } else { police->peak_present = false; @@ -376,9 +376,9 @@ tcf_act_police_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref) }; if (police->rate_present) - opt.rate.rate = psched_ratecfg_getrate(&police->rate); + psched_ratecfg_getrate(&opt.rate, &police->rate); if (police->peak_present) - opt.peakrate.rate = psched_ratecfg_getrate(&police->peak); + psched_ratecfg_getrate(&opt.peakrate, &police->peak); if (nla_put(skb, TCA_POLICE_TBF, sizeof(opt), &opt)) goto nla_put_failure; if (police->tcfp_result && diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index eac7e0e..2022408 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -898,14 +898,16 @@ void dev_shutdown(struct net_device *dev) WARN_ON(timer_pending(&dev->watchdog_timer)); } -void psched_ratecfg_precompute(struct psched_ratecfg *r, u32 rate) +void psched_ratecfg_precompute(struct psched_ratecfg *r, + const struct tc_ratespec *conf) { u64 factor; u64 mult; int shift; - r->rate_bps = (u64)rate << 3; - r->shift = 0; + memset(r, 0, sizeof(*r)); + r->overhead = conf->overhead; + r->rate_bps = (u64)conf->rate << 3; r->mult = 1; /* * Calibrate mult, shift so that token counting is accurate diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index 79b1876..f87fb85 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -1090,9 +1090,9 @@ static int htb_dump_class(struct Qdisc *sch, unsigned long arg, memset(&opt, 0, sizeof(opt)); - opt.rate.rate = psched_ratecfg_getrate(&cl->rate); + psched_ratecfg_getrate(&opt.rate, &cl->rate); opt.buffer = PSCHED_NS2TICKS(cl->buffer); - opt.ceil.rate = psched_ratecfg_getrate(&cl->ceil); + psched_ratecfg_getrate(&opt.ceil, &cl->ceil); opt.cbuffer = PSCHED_NS2TICKS(cl->cbuffer); opt.quantum = cl->quantum; opt.prio = cl->prio; @@ -1459,8 +1459,8 @@ static int htb_change_class(struct Qdisc *sch, u32 classid, cl->prio = TC_HTB_NUMPRIO - 1; } - psched_ratecfg_precompute(&cl->rate, hopt->rate.rate); - psched_ratecfg_precompute(&cl->ceil, hopt->ceil.rate); + psched_ratecfg_precompute(&cl->rate, &hopt->rate); + psched_ratecfg_precompute(&cl->ceil, &hopt->ceil); cl->buffer = PSCHED_TICKS2NS(hopt->buffer); cl->cbuffer = PSCHED_TICKS2NS(hopt->buffer); diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index c8388f3..e478d31 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -298,9 +298,9 @@ static int tbf_change(struct Qdisc *sch, struct nlattr *opt) q->tokens = q->buffer; q->ptokens = q->mtu; - psched_ratecfg_precompute(&q->rate, rtab->rate.rate); + psched_ratecfg_precompute(&q->rate, &rtab->rate); if (ptab) { - psched_ratecfg_precompute(&q->peak, ptab->rate.rate); + psched_ratecfg_precompute(&q->peak, &ptab->rate); q->peak_present = true; } else { q->peak_present = false; @@ -350,9 +350,9 @@ static int tbf_dump(struct Qdisc *sch, struct sk_buff *skb) goto nla_put_failure; opt.limit = q->limit; - opt.rate.rate = psched_ratecfg_getrate(&q->rate); + psched_ratecfg_getrate(&opt.rate, &q->rate); if (q->peak_present) - opt.peakrate.rate = psched_ratecfg_getrate(&q->peak); + psched_ratecfg_getrate(&opt.peakrate, &q->peak); else memset(&opt.peakrate, 0, sizeof(opt.peakrate)); opt.mtu = PSCHED_NS2TICKS(q->mtu); -- cgit v0.10.2 From a08b9bc586a7810cdebbc316d5cbaed56a2a04a9 Mon Sep 17 00:00:00 2001 From: Anson Huang Date: Fri, 31 May 2013 17:01:54 -0400 Subject: ARM: imx: clk-imx6q: AXI clock select index is incorrect The AXI clock mux should be as below: 00: periph; 01: pll2_pfd2_396m; 10: periph; 11: pll3_pfd1_540m; Signed-off-by: Anson Huang Signed-off-by: Shawn Guo diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index ba2de54..4e3148c 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -181,7 +181,7 @@ static const char *periph_clk2_sels[] = { "pll3_usb_otg", "osc", "osc", "dummy", static const char *periph2_clk2_sels[] = { "pll3_usb_otg", "pll2_bus", }; static const char *periph_sels[] = { "periph_pre", "periph_clk2", }; static const char *periph2_sels[] = { "periph2_pre", "periph2_clk2", }; -static const char *axi_sels[] = { "periph", "pll2_pfd2_396m", "pll3_pfd1_540m", }; +static const char *axi_sels[] = { "periph", "pll2_pfd2_396m", "periph", "pll3_pfd1_540m", }; static const char *audio_sels[] = { "pll4_post_div", "pll3_pfd2_508m", "pll3_pfd3_454m", "pll3_usb_otg", }; static const char *gpu_axi_sels[] = { "axi", "ahb", }; static const char *gpu2d_core_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd0_352m", "pll2_pfd2_396m", }; -- cgit v0.10.2 From a0c6d309c6df14655f9962f666d1da96318b0b7c Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Sun, 2 Jun 2013 19:49:07 +0200 Subject: ALSA: usb-audio: fix Roland/Cakewalk UM-3G support Commit 927c9423dd5f2d1c0b93d5e694ab84b4a5559713 (ALSA: usb-audio: add Edirol UM-3G support) used a wrong quirk type, which would make the driver refuse to attach with the error message "MIDIStreaming interface descriptor not found". Cc: # 3.3 and later Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 7f1722f..6ae71b8 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -1792,7 +1792,11 @@ YAMAHA_DEVICE(0x7010, "UB99"), USB_DEVICE_VENDOR_SPEC(0x0582, 0x0108), .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { .ifnum = 0, - .type = QUIRK_MIDI_STANDARD_INTERFACE + .type = QUIRK_MIDI_FIXED_ENDPOINT, + .data = & (const struct snd_usb_midi_endpoint_info) { + .out_cables = 0x0007, + .in_cables = 0x0007 + } } }, { -- cgit v0.10.2 From 1f3dc6d76424538efb2095055035254b14499c77 Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 23 May 2013 09:49:05 -0700 Subject: mips/kvm: Fix ABI for use of FPU. Define a non-empty struct kvm_fpu. Signed-off-by: David Daney Acked-by: Sanjay Lal Signed-off-by: Paolo Bonzini diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h index 85789ea..0e8f565 100644 --- a/arch/mips/include/uapi/asm/kvm.h +++ b/arch/mips/include/uapi/asm/kvm.h @@ -1,11 +1,12 @@ /* -* This file is subject to the terms and conditions of the GNU General Public -* License. See the file "COPYING" in the main directory of this archive -* for more details. -* -* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. -* Authors: Sanjay Lal -*/ + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + * Copyright (C) 2013 Cavium, Inc. + * Authors: Sanjay Lal + */ #ifndef __LINUX_KVM_MIPS_H #define __LINUX_KVM_MIPS_H @@ -31,8 +32,20 @@ struct kvm_regs { struct kvm_sregs { }; -/* for KVM_GET_FPU and KVM_SET_FPU */ +/* + * for KVM_GET_FPU and KVM_SET_FPU + * + * If Status[FR] is zero (32-bit FPU), the upper 32-bits of the FPRs + * are zero filled. + */ struct kvm_fpu { + __u64 fpr[32]; + __u32 fir; + __u32 fccr; + __u32 fexr; + __u32 fenr; + __u32 fcsr; + __u32 pad; }; struct kvm_debug_exit_arch { -- cgit v0.10.2 From 688cded320a4760de679160b42f9a81face02674 Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 23 May 2013 09:49:06 -0700 Subject: mips/kvm: Fix ABI for use of 64-bit registers. All registers are 64-bits wide, 32-bit guests use the least significant portion of the register storage fields. Signed-off-by: David Daney Acked-by: Sanjay Lal Signed-off-by: Paolo Bonzini diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h index 0e8f565..86812fb 100644 --- a/arch/mips/include/uapi/asm/kvm.h +++ b/arch/mips/include/uapi/asm/kvm.h @@ -18,12 +18,18 @@ #define N_MIPS_COPROC_REGS 32 #define N_MIPS_COPROC_SEL 8 -/* for KVM_GET_REGS and KVM_SET_REGS */ +/* + * for KVM_GET_REGS and KVM_SET_REGS + * + * If Config[AT] is zero (32-bit CPU), the register contents are + * stored in the lower 32-bits of the struct kvm_regs fields and sign + * extended to 64-bits. + */ struct kvm_regs { - __u32 gprs[32]; - __u32 hi; - __u32 lo; - __u32 pc; + __u64 gprs[32]; + __u64 hi; + __u64 lo; + __u64 pc; __u32 cp0reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; }; -- cgit v0.10.2 From bf32ebf66d74e8a196256d7ac2a4f3c6938c614a Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 23 May 2013 09:49:07 -0700 Subject: mips/kvm: Fix name of gpr field in struct kvm_regs. Signed-off-by: David Daney Acked-by: Sanjay Lal Signed-off-by: Paolo Bonzini diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h index 86812fb..d145ead 100644 --- a/arch/mips/include/uapi/asm/kvm.h +++ b/arch/mips/include/uapi/asm/kvm.h @@ -26,7 +26,8 @@ * extended to 64-bits. */ struct kvm_regs { - __u64 gprs[32]; + /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ + __u64 gpr[32]; __u64 hi; __u64 lo; __u64 pc; diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index e0dad02..93da750 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -678,7 +678,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) int i; for (i = 0; i < 32; i++) - vcpu->arch.gprs[i] = regs->gprs[i]; + vcpu->arch.gprs[i] = regs->gpr[i]; vcpu->arch.hi = regs->hi; vcpu->arch.lo = regs->lo; @@ -692,7 +692,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) int i; for (i = 0; i < 32; i++) - regs->gprs[i] = vcpu->arch.gprs[i]; + regs->gpr[i] = vcpu->arch.gprs[i]; regs->hi = vcpu->arch.hi; regs->lo = vcpu->arch.lo; -- cgit v0.10.2 From 8d17dd041a548b016ff401d36be6b2563c940ed5 Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 23 May 2013 09:49:08 -0700 Subject: mips/kvm: Use ARRAY_SIZE() instead of hardcoded constants in kvm_arch_vcpu_ioctl_{s,g}et_regs Also we cannot set special zero register, so force it to zero. Signed-off-by: David Daney Acked-by: Sanjay Lal Signed-off-by: Paolo Bonzini diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index 93da750..71a1fc1 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -677,9 +677,9 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) { int i; - for (i = 0; i < 32; i++) + for (i = 1; i < ARRAY_SIZE(vcpu->arch.gprs); i++) vcpu->arch.gprs[i] = regs->gpr[i]; - + vcpu->arch.gprs[0] = 0; /* zero is special, and cannot be set. */ vcpu->arch.hi = regs->hi; vcpu->arch.lo = regs->lo; vcpu->arch.pc = regs->pc; @@ -691,7 +691,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) { int i; - for (i = 0; i < 32; i++) + for (i = 0; i < ARRAY_SIZE(vcpu->arch.gprs); i++) regs->gpr[i] = vcpu->arch.gprs[i]; regs->hi = vcpu->arch.hi; -- cgit v0.10.2 From 4c73fb2b05192f2c817940b38015c36007379380 Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 23 May 2013 09:49:09 -0700 Subject: mips/kvm: Fix ABI by moving manipulation of CP0 registers to KVM_{G,S}ET_ONE_REG Because not all 256 CP0 registers are ever implemented, we need a different method of manipulating them. Use the KVM_SET_ONE_REG/KVM_GET_ONE_REG mechanism. Now unused code and definitions are removed. Signed-off-by: David Daney Acked-by: Sanjay Lal Signed-off-by: Paolo Bonzini diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 143875c..4d6fa0b 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -496,10 +496,6 @@ struct kvm_mips_callbacks { uint32_t cause); int (*irq_clear) (struct kvm_vcpu *vcpu, unsigned int priority, uint32_t cause); - int (*vcpu_ioctl_get_regs) (struct kvm_vcpu *vcpu, - struct kvm_regs *regs); - int (*vcpu_ioctl_set_regs) (struct kvm_vcpu *vcpu, - struct kvm_regs *regs); }; extern struct kvm_mips_callbacks *kvm_mips_callbacks; int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks); diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h index d145ead..3f424f5 100644 --- a/arch/mips/include/uapi/asm/kvm.h +++ b/arch/mips/include/uapi/asm/kvm.h @@ -13,10 +13,11 @@ #include -#define __KVM_MIPS - -#define N_MIPS_COPROC_REGS 32 -#define N_MIPS_COPROC_SEL 8 +/* + * KVM MIPS specific structures and definitions. + * + * Some parts derived from the x86 version of this file. + */ /* * for KVM_GET_REGS and KVM_SET_REGS @@ -31,12 +32,6 @@ struct kvm_regs { __u64 hi; __u64 lo; __u64 pc; - - __u32 cp0reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; -}; - -/* for KVM_GET_SREGS and KVM_SET_SREGS */ -struct kvm_sregs { }; /* @@ -55,21 +50,89 @@ struct kvm_fpu { __u32 pad; }; + +/* + * For MIPS, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access CP0 + * registers. The id field is broken down as follows: + * + * bits[2..0] - Register 'sel' index. + * bits[7..3] - Register 'rd' index. + * bits[15..8] - Must be zero. + * bits[63..16] - 1 -> CP0 registers. + * + * Other sets registers may be added in the future. Each set would + * have its own identifier in bits[63..16]. + * + * The addr field of struct kvm_one_reg must point to an aligned + * 64-bit wide location. For registers that are narrower than + * 64-bits, the value is stored in the low order bits of the location, + * and sign extended to 64-bits. + * + * The registers defined in struct kvm_regs are also accessible, the + * id values for these are below. + */ + +#define KVM_REG_MIPS_R0 0 +#define KVM_REG_MIPS_R1 1 +#define KVM_REG_MIPS_R2 2 +#define KVM_REG_MIPS_R3 3 +#define KVM_REG_MIPS_R4 4 +#define KVM_REG_MIPS_R5 5 +#define KVM_REG_MIPS_R6 6 +#define KVM_REG_MIPS_R7 7 +#define KVM_REG_MIPS_R8 8 +#define KVM_REG_MIPS_R9 9 +#define KVM_REG_MIPS_R10 10 +#define KVM_REG_MIPS_R11 11 +#define KVM_REG_MIPS_R12 12 +#define KVM_REG_MIPS_R13 13 +#define KVM_REG_MIPS_R14 14 +#define KVM_REG_MIPS_R15 15 +#define KVM_REG_MIPS_R16 16 +#define KVM_REG_MIPS_R17 17 +#define KVM_REG_MIPS_R18 18 +#define KVM_REG_MIPS_R19 19 +#define KVM_REG_MIPS_R20 20 +#define KVM_REG_MIPS_R21 21 +#define KVM_REG_MIPS_R22 22 +#define KVM_REG_MIPS_R23 23 +#define KVM_REG_MIPS_R24 24 +#define KVM_REG_MIPS_R25 25 +#define KVM_REG_MIPS_R26 26 +#define KVM_REG_MIPS_R27 27 +#define KVM_REG_MIPS_R28 28 +#define KVM_REG_MIPS_R29 29 +#define KVM_REG_MIPS_R30 30 +#define KVM_REG_MIPS_R31 31 + +#define KVM_REG_MIPS_HI 32 +#define KVM_REG_MIPS_LO 33 +#define KVM_REG_MIPS_PC 34 + +/* + * KVM MIPS specific structures and definitions + * + */ struct kvm_debug_exit_arch { + __u64 epc; }; /* for KVM_SET_GUEST_DEBUG */ struct kvm_guest_debug_arch { }; +/* definition of registers in kvm_run */ +struct kvm_sync_regs { +}; + +/* dummy definition */ +struct kvm_sregs { +}; + struct kvm_mips_interrupt { /* in */ __u32 cpu; __u32 irq; }; -/* definition of registers in kvm_run */ -struct kvm_sync_regs { -}; - #endif /* __LINUX_KVM_MIPS_H */ diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index 71a1fc1..3caa006 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -485,15 +485,253 @@ kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, return -EINVAL; } +#define KVM_REG_MIPS_CP0_INDEX (0x10000 + 8 * 0 + 0) +#define KVM_REG_MIPS_CP0_ENTRYLO0 (0x10000 + 8 * 2 + 0) +#define KVM_REG_MIPS_CP0_ENTRYLO1 (0x10000 + 8 * 3 + 0) +#define KVM_REG_MIPS_CP0_CONTEXT (0x10000 + 8 * 4 + 0) +#define KVM_REG_MIPS_CP0_USERLOCAL (0x10000 + 8 * 4 + 2) +#define KVM_REG_MIPS_CP0_PAGEMASK (0x10000 + 8 * 5 + 0) +#define KVM_REG_MIPS_CP0_PAGEGRAIN (0x10000 + 8 * 5 + 1) +#define KVM_REG_MIPS_CP0_WIRED (0x10000 + 8 * 6 + 0) +#define KVM_REG_MIPS_CP0_HWRENA (0x10000 + 8 * 7 + 0) +#define KVM_REG_MIPS_CP0_BADVADDR (0x10000 + 8 * 8 + 0) +#define KVM_REG_MIPS_CP0_COUNT (0x10000 + 8 * 9 + 0) +#define KVM_REG_MIPS_CP0_ENTRYHI (0x10000 + 8 * 10 + 0) +#define KVM_REG_MIPS_CP0_COMPARE (0x10000 + 8 * 11 + 0) +#define KVM_REG_MIPS_CP0_STATUS (0x10000 + 8 * 12 + 0) +#define KVM_REG_MIPS_CP0_CAUSE (0x10000 + 8 * 13 + 0) +#define KVM_REG_MIPS_CP0_EBASE (0x10000 + 8 * 15 + 1) +#define KVM_REG_MIPS_CP0_CONFIG (0x10000 + 8 * 16 + 0) +#define KVM_REG_MIPS_CP0_CONFIG1 (0x10000 + 8 * 16 + 1) +#define KVM_REG_MIPS_CP0_CONFIG2 (0x10000 + 8 * 16 + 2) +#define KVM_REG_MIPS_CP0_CONFIG3 (0x10000 + 8 * 16 + 3) +#define KVM_REG_MIPS_CP0_CONFIG7 (0x10000 + 8 * 16 + 7) +#define KVM_REG_MIPS_CP0_XCONTEXT (0x10000 + 8 * 20 + 0) +#define KVM_REG_MIPS_CP0_ERROREPC (0x10000 + 8 * 30 + 0) + +static u64 kvm_mips_get_one_regs[] = { + KVM_REG_MIPS_R0, + KVM_REG_MIPS_R1, + KVM_REG_MIPS_R2, + KVM_REG_MIPS_R3, + KVM_REG_MIPS_R4, + KVM_REG_MIPS_R5, + KVM_REG_MIPS_R6, + KVM_REG_MIPS_R7, + KVM_REG_MIPS_R8, + KVM_REG_MIPS_R9, + KVM_REG_MIPS_R10, + KVM_REG_MIPS_R11, + KVM_REG_MIPS_R12, + KVM_REG_MIPS_R13, + KVM_REG_MIPS_R14, + KVM_REG_MIPS_R15, + KVM_REG_MIPS_R16, + KVM_REG_MIPS_R17, + KVM_REG_MIPS_R18, + KVM_REG_MIPS_R19, + KVM_REG_MIPS_R20, + KVM_REG_MIPS_R21, + KVM_REG_MIPS_R22, + KVM_REG_MIPS_R23, + KVM_REG_MIPS_R24, + KVM_REG_MIPS_R25, + KVM_REG_MIPS_R26, + KVM_REG_MIPS_R27, + KVM_REG_MIPS_R28, + KVM_REG_MIPS_R29, + KVM_REG_MIPS_R30, + KVM_REG_MIPS_R31, + + KVM_REG_MIPS_HI, + KVM_REG_MIPS_LO, + KVM_REG_MIPS_PC, + + KVM_REG_MIPS_CP0_INDEX, + KVM_REG_MIPS_CP0_CONTEXT, + KVM_REG_MIPS_CP0_PAGEMASK, + KVM_REG_MIPS_CP0_WIRED, + KVM_REG_MIPS_CP0_BADVADDR, + KVM_REG_MIPS_CP0_ENTRYHI, + KVM_REG_MIPS_CP0_STATUS, + KVM_REG_MIPS_CP0_CAUSE, + /* EPC set via kvm_regs, et al. */ + KVM_REG_MIPS_CP0_CONFIG, + KVM_REG_MIPS_CP0_CONFIG1, + KVM_REG_MIPS_CP0_CONFIG2, + KVM_REG_MIPS_CP0_CONFIG3, + KVM_REG_MIPS_CP0_CONFIG7, + KVM_REG_MIPS_CP0_ERROREPC +}; + +static int kvm_mips_get_reg(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg) +{ + u64 __user *uaddr = (u64 __user *)(long)reg->addr; + + struct mips_coproc *cop0 = vcpu->arch.cop0; + s64 v; + + switch (reg->id) { + case KVM_REG_MIPS_R0 ... KVM_REG_MIPS_R31: + v = (long)vcpu->arch.gprs[reg->id - KVM_REG_MIPS_R0]; + break; + case KVM_REG_MIPS_HI: + v = (long)vcpu->arch.hi; + break; + case KVM_REG_MIPS_LO: + v = (long)vcpu->arch.lo; + break; + case KVM_REG_MIPS_PC: + v = (long)vcpu->arch.pc; + break; + + case KVM_REG_MIPS_CP0_INDEX: + v = (long)kvm_read_c0_guest_index(cop0); + break; + case KVM_REG_MIPS_CP0_CONTEXT: + v = (long)kvm_read_c0_guest_context(cop0); + break; + case KVM_REG_MIPS_CP0_PAGEMASK: + v = (long)kvm_read_c0_guest_pagemask(cop0); + break; + case KVM_REG_MIPS_CP0_WIRED: + v = (long)kvm_read_c0_guest_wired(cop0); + break; + case KVM_REG_MIPS_CP0_BADVADDR: + v = (long)kvm_read_c0_guest_badvaddr(cop0); + break; + case KVM_REG_MIPS_CP0_ENTRYHI: + v = (long)kvm_read_c0_guest_entryhi(cop0); + break; + case KVM_REG_MIPS_CP0_STATUS: + v = (long)kvm_read_c0_guest_status(cop0); + break; + case KVM_REG_MIPS_CP0_CAUSE: + v = (long)kvm_read_c0_guest_cause(cop0); + break; + case KVM_REG_MIPS_CP0_ERROREPC: + v = (long)kvm_read_c0_guest_errorepc(cop0); + break; + case KVM_REG_MIPS_CP0_CONFIG: + v = (long)kvm_read_c0_guest_config(cop0); + break; + case KVM_REG_MIPS_CP0_CONFIG1: + v = (long)kvm_read_c0_guest_config1(cop0); + break; + case KVM_REG_MIPS_CP0_CONFIG2: + v = (long)kvm_read_c0_guest_config2(cop0); + break; + case KVM_REG_MIPS_CP0_CONFIG3: + v = (long)kvm_read_c0_guest_config3(cop0); + break; + case KVM_REG_MIPS_CP0_CONFIG7: + v = (long)kvm_read_c0_guest_config7(cop0); + break; + default: + return -EINVAL; + } + return put_user(v, uaddr); +} + +static int kvm_mips_set_reg(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg) +{ + u64 __user *uaddr = (u64 __user *)(long)reg->addr; + struct mips_coproc *cop0 = vcpu->arch.cop0; + u64 v; + + if (get_user(v, uaddr) != 0) + return -EFAULT; + + switch (reg->id) { + case KVM_REG_MIPS_R0: + /* Silently ignore requests to set $0 */ + break; + case KVM_REG_MIPS_R1 ... KVM_REG_MIPS_R31: + vcpu->arch.gprs[reg->id - KVM_REG_MIPS_R0] = v; + break; + case KVM_REG_MIPS_HI: + vcpu->arch.hi = v; + break; + case KVM_REG_MIPS_LO: + vcpu->arch.lo = v; + break; + case KVM_REG_MIPS_PC: + vcpu->arch.pc = v; + break; + + case KVM_REG_MIPS_CP0_INDEX: + kvm_write_c0_guest_index(cop0, v); + break; + case KVM_REG_MIPS_CP0_CONTEXT: + kvm_write_c0_guest_context(cop0, v); + break; + case KVM_REG_MIPS_CP0_PAGEMASK: + kvm_write_c0_guest_pagemask(cop0, v); + break; + case KVM_REG_MIPS_CP0_WIRED: + kvm_write_c0_guest_wired(cop0, v); + break; + case KVM_REG_MIPS_CP0_BADVADDR: + kvm_write_c0_guest_badvaddr(cop0, v); + break; + case KVM_REG_MIPS_CP0_ENTRYHI: + kvm_write_c0_guest_entryhi(cop0, v); + break; + case KVM_REG_MIPS_CP0_STATUS: + kvm_write_c0_guest_status(cop0, v); + break; + case KVM_REG_MIPS_CP0_CAUSE: + kvm_write_c0_guest_cause(cop0, v); + break; + case KVM_REG_MIPS_CP0_ERROREPC: + kvm_write_c0_guest_errorepc(cop0, v); + break; + default: + return -EINVAL; + } + return 0; +} + long kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { struct kvm_vcpu *vcpu = filp->private_data; void __user *argp = (void __user *)arg; long r; - int intr; switch (ioctl) { + case KVM_SET_ONE_REG: + case KVM_GET_ONE_REG: { + struct kvm_one_reg reg; + if (copy_from_user(®, argp, sizeof(reg))) + return -EFAULT; + if (ioctl == KVM_SET_ONE_REG) + return kvm_mips_set_reg(vcpu, ®); + else + return kvm_mips_get_reg(vcpu, ®); + } + case KVM_GET_REG_LIST: { + struct kvm_reg_list __user *user_list = argp; + u64 __user *reg_dest; + struct kvm_reg_list reg_list; + unsigned n; + + if (copy_from_user(®_list, user_list, sizeof(reg_list))) + return -EFAULT; + n = reg_list.n; + reg_list.n = ARRAY_SIZE(kvm_mips_get_one_regs); + if (copy_to_user(user_list, ®_list, sizeof(reg_list))) + return -EFAULT; + if (n < reg_list.n) + return -E2BIG; + reg_dest = user_list->reg; + if (copy_to_user(reg_dest, kvm_mips_get_one_regs, + sizeof(kvm_mips_get_one_regs))) + return -EFAULT; + return 0; + } case KVM_NMI: /* Treat the NMI as a CPU reset */ r = kvm_mips_reset_vcpu(vcpu); @@ -505,8 +743,6 @@ kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) if (copy_from_user(&irq, argp, sizeof(irq))) goto out; - intr = (int)irq.irq; - kvm_debug("[%d] %s: irq: %d\n", vcpu->vcpu_id, __func__, irq.irq); @@ -514,7 +750,7 @@ kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) break; } default: - r = -EINVAL; + r = -ENOIOCTLCMD; } out: @@ -627,6 +863,9 @@ int kvm_dev_ioctl_check_extension(long ext) int r; switch (ext) { + case KVM_CAP_ONE_REG: + r = 1; + break; case KVM_CAP_COALESCED_MMIO: r = KVM_COALESCED_MMIO_PAGE_OFFSET; break; @@ -635,7 +874,6 @@ int kvm_dev_ioctl_check_extension(long ext) break; } return r; - } int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) @@ -684,7 +922,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) vcpu->arch.lo = regs->lo; vcpu->arch.pc = regs->pc; - return kvm_mips_callbacks->vcpu_ioctl_set_regs(vcpu, regs); + return 0; } int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) @@ -698,7 +936,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) regs->lo = vcpu->arch.lo; regs->pc = vcpu->arch.pc; - return kvm_mips_callbacks->vcpu_ioctl_get_regs(vcpu, regs); + return 0; } void kvm_mips_comparecount_func(unsigned long data) diff --git a/arch/mips/kvm/kvm_trap_emul.c b/arch/mips/kvm/kvm_trap_emul.c index 466aeef..30d7253 100644 --- a/arch/mips/kvm/kvm_trap_emul.c +++ b/arch/mips/kvm/kvm_trap_emul.c @@ -345,54 +345,6 @@ static int kvm_trap_emul_handle_break(struct kvm_vcpu *vcpu) return ret; } -static int -kvm_trap_emul_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) -{ - struct mips_coproc *cop0 = vcpu->arch.cop0; - - kvm_write_c0_guest_index(cop0, regs->cp0reg[MIPS_CP0_TLB_INDEX][0]); - kvm_write_c0_guest_context(cop0, regs->cp0reg[MIPS_CP0_TLB_CONTEXT][0]); - kvm_write_c0_guest_badvaddr(cop0, regs->cp0reg[MIPS_CP0_BAD_VADDR][0]); - kvm_write_c0_guest_entryhi(cop0, regs->cp0reg[MIPS_CP0_TLB_HI][0]); - kvm_write_c0_guest_epc(cop0, regs->cp0reg[MIPS_CP0_EXC_PC][0]); - - kvm_write_c0_guest_status(cop0, regs->cp0reg[MIPS_CP0_STATUS][0]); - kvm_write_c0_guest_cause(cop0, regs->cp0reg[MIPS_CP0_CAUSE][0]); - kvm_write_c0_guest_pagemask(cop0, - regs->cp0reg[MIPS_CP0_TLB_PG_MASK][0]); - kvm_write_c0_guest_wired(cop0, regs->cp0reg[MIPS_CP0_TLB_WIRED][0]); - kvm_write_c0_guest_errorepc(cop0, regs->cp0reg[MIPS_CP0_ERROR_PC][0]); - - return 0; -} - -static int -kvm_trap_emul_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) -{ - struct mips_coproc *cop0 = vcpu->arch.cop0; - - regs->cp0reg[MIPS_CP0_TLB_INDEX][0] = kvm_read_c0_guest_index(cop0); - regs->cp0reg[MIPS_CP0_TLB_CONTEXT][0] = kvm_read_c0_guest_context(cop0); - regs->cp0reg[MIPS_CP0_BAD_VADDR][0] = kvm_read_c0_guest_badvaddr(cop0); - regs->cp0reg[MIPS_CP0_TLB_HI][0] = kvm_read_c0_guest_entryhi(cop0); - regs->cp0reg[MIPS_CP0_EXC_PC][0] = kvm_read_c0_guest_epc(cop0); - - regs->cp0reg[MIPS_CP0_STATUS][0] = kvm_read_c0_guest_status(cop0); - regs->cp0reg[MIPS_CP0_CAUSE][0] = kvm_read_c0_guest_cause(cop0); - regs->cp0reg[MIPS_CP0_TLB_PG_MASK][0] = - kvm_read_c0_guest_pagemask(cop0); - regs->cp0reg[MIPS_CP0_TLB_WIRED][0] = kvm_read_c0_guest_wired(cop0); - regs->cp0reg[MIPS_CP0_ERROR_PC][0] = kvm_read_c0_guest_errorepc(cop0); - - regs->cp0reg[MIPS_CP0_CONFIG][0] = kvm_read_c0_guest_config(cop0); - regs->cp0reg[MIPS_CP0_CONFIG][1] = kvm_read_c0_guest_config1(cop0); - regs->cp0reg[MIPS_CP0_CONFIG][2] = kvm_read_c0_guest_config2(cop0); - regs->cp0reg[MIPS_CP0_CONFIG][3] = kvm_read_c0_guest_config3(cop0); - regs->cp0reg[MIPS_CP0_CONFIG][7] = kvm_read_c0_guest_config7(cop0); - - return 0; -} - static int kvm_trap_emul_vm_init(struct kvm *kvm) { return 0; @@ -471,8 +423,6 @@ static struct kvm_mips_callbacks kvm_trap_emul_callbacks = { .dequeue_io_int = kvm_mips_dequeue_io_int_cb, .irq_deliver = kvm_mips_irq_deliver_cb, .irq_clear = kvm_mips_irq_clear_cb, - .vcpu_ioctl_get_regs = kvm_trap_emul_ioctl_get_regs, - .vcpu_ioctl_set_regs = kvm_trap_emul_ioctl_set_regs, }; int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks) -- cgit v0.10.2 From ed829857b36bc0155d85b661ab227df57ac898f3 Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 23 May 2013 09:49:10 -0700 Subject: mips/kvm: Use ENOIOCTLCMD to indicate unimplemented ioctls. The Linux Way is to return -ENOIOCTLCMD to the vfs when an unimplemented ioctl is requested. Do this in kvm_mips instead of a random mixture of -ENOTSUPP and -EINVAL. Signed-off-by: David Daney Acked-by: Sanjay Lal Signed-off-by: Paolo Bonzini diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index 3caa006..d934b01 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -195,7 +195,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm) long kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { - return -EINVAL; + return -ENOIOCTLCMD; } void kvm_arch_free_memslot(struct kvm_memory_slot *free, @@ -401,7 +401,7 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg) { - return -EINVAL; + return -ENOIOCTLCMD; } int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) @@ -475,14 +475,14 @@ int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, struct kvm_mp_state *mp_state) { - return -EINVAL; + return -ENOIOCTLCMD; } int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, struct kvm_mp_state *mp_state) { - return -EINVAL; + return -ENOIOCTLCMD; } #define KVM_REG_MIPS_CP0_INDEX (0x10000 + 8 * 0 + 0) @@ -801,7 +801,7 @@ long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) switch (ioctl) { default: - r = -EINVAL; + r = -ENOIOCTLCMD; } return r; @@ -829,13 +829,13 @@ void kvm_arch_exit(void) int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { - return -ENOTSUPP; + return -ENOIOCTLCMD; } int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { - return -ENOTSUPP; + return -ENOIOCTLCMD; } int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) @@ -845,12 +845,12 @@ int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) { - return -ENOTSUPP; + return -ENOIOCTLCMD; } int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) { - return -ENOTSUPP; + return -ENOIOCTLCMD; } int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) -- cgit v0.10.2 From e8180dcaa8470ceca21109f143876fdcd9fe050a Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Thu, 9 May 2013 00:28:06 +0200 Subject: ARM: KVM: prevent NULL pointer dereferences with KVM VCPU ioctl Some ARM KVM VCPU ioctls require the vCPU to be properly initialized with the KVM_ARM_VCPU_INIT ioctl before being used with further requests. KVM_RUN checks whether this initialization has been done, but other ioctls do not. Namely KVM_GET_REG_LIST will dereference an array with index -1 without initialization and thus leads to a kernel oops. Fix this by adding checks before executing the ioctl handlers. [ Removed superflous comment from static function - Christoffer ] Changes from v1: * moved check into a static function with a meaningful name Signed-off-by: Andre Przywara Signed-off-by: Christoffer Dall diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 37d216d..ef1703b 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -492,6 +492,11 @@ static void vcpu_pause(struct kvm_vcpu *vcpu) wait_event_interruptible(*wq, !vcpu->arch.pause); } +static int kvm_vcpu_initialized(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.target >= 0; +} + /** * kvm_arch_vcpu_ioctl_run - the main VCPU run function to execute guest code * @vcpu: The VCPU pointer @@ -508,8 +513,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) int ret; sigset_t sigsaved; - /* Make sure they initialize the vcpu with KVM_ARM_VCPU_INIT */ - if (unlikely(vcpu->arch.target < 0)) + if (unlikely(!kvm_vcpu_initialized(vcpu))) return -ENOEXEC; ret = kvm_vcpu_first_run_init(vcpu); @@ -710,6 +714,10 @@ long kvm_arch_vcpu_ioctl(struct file *filp, case KVM_SET_ONE_REG: case KVM_GET_ONE_REG: { struct kvm_one_reg reg; + + if (unlikely(!kvm_vcpu_initialized(vcpu))) + return -ENOEXEC; + if (copy_from_user(®, argp, sizeof(reg))) return -EFAULT; if (ioctl == KVM_SET_ONE_REG) @@ -722,6 +730,9 @@ long kvm_arch_vcpu_ioctl(struct file *filp, struct kvm_reg_list reg_list; unsigned n; + if (unlikely(!kvm_vcpu_initialized(vcpu))) + return -ENOEXEC; + if (copy_from_user(®_list, user_list, sizeof(reg_list))) return -EFAULT; n = reg_list.n; -- cgit v0.10.2 From d4cb9df5d1f79950b34e78ec5d1b1b59d6e9c7b7 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 14 May 2013 12:11:34 +0100 Subject: ARM: KVM: be more thorough when invalidating TLBs The KVM/ARM MMU code doesn't take care of invalidating TLBs before freeing a {pte,pmd} table. This could cause problems if the page is reallocated and then speculated into by another CPU. Reported-by: Catalin Marinas Signed-off-by: Marc Zyngier Acked-by: Catalin Marinas Signed-off-by: Christoffer Dall diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 9657065..84ba67b 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -43,7 +43,14 @@ static phys_addr_t hyp_idmap_vector; static void kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa) { - kvm_call_hyp(__kvm_tlb_flush_vmid_ipa, kvm, ipa); + /* + * This function also gets called when dealing with HYP page + * tables. As HYP doesn't have an associated struct kvm (and + * the HYP page tables are fairly static), we don't do + * anything there. + */ + if (kvm) + kvm_call_hyp(__kvm_tlb_flush_vmid_ipa, kvm, ipa); } static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache, @@ -78,18 +85,20 @@ static void *mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc) return p; } -static void clear_pud_entry(pud_t *pud) +static void clear_pud_entry(struct kvm *kvm, pud_t *pud, phys_addr_t addr) { pmd_t *pmd_table = pmd_offset(pud, 0); pud_clear(pud); + kvm_tlb_flush_vmid_ipa(kvm, addr); pmd_free(NULL, pmd_table); put_page(virt_to_page(pud)); } -static void clear_pmd_entry(pmd_t *pmd) +static void clear_pmd_entry(struct kvm *kvm, pmd_t *pmd, phys_addr_t addr) { pte_t *pte_table = pte_offset_kernel(pmd, 0); pmd_clear(pmd); + kvm_tlb_flush_vmid_ipa(kvm, addr); pte_free_kernel(NULL, pte_table); put_page(virt_to_page(pmd)); } @@ -100,11 +109,12 @@ static bool pmd_empty(pmd_t *pmd) return page_count(pmd_page) == 1; } -static void clear_pte_entry(pte_t *pte) +static void clear_pte_entry(struct kvm *kvm, pte_t *pte, phys_addr_t addr) { if (pte_present(*pte)) { kvm_set_pte(pte, __pte(0)); put_page(virt_to_page(pte)); + kvm_tlb_flush_vmid_ipa(kvm, addr); } } @@ -114,7 +124,8 @@ static bool pte_empty(pte_t *pte) return page_count(pte_page) == 1; } -static void unmap_range(pgd_t *pgdp, unsigned long long start, u64 size) +static void unmap_range(struct kvm *kvm, pgd_t *pgdp, + unsigned long long start, u64 size) { pgd_t *pgd; pud_t *pud; @@ -138,15 +149,15 @@ static void unmap_range(pgd_t *pgdp, unsigned long long start, u64 size) } pte = pte_offset_kernel(pmd, addr); - clear_pte_entry(pte); + clear_pte_entry(kvm, pte, addr); range = PAGE_SIZE; /* If we emptied the pte, walk back up the ladder */ if (pte_empty(pte)) { - clear_pmd_entry(pmd); + clear_pmd_entry(kvm, pmd, addr); range = PMD_SIZE; if (pmd_empty(pmd)) { - clear_pud_entry(pud); + clear_pud_entry(kvm, pud, addr); range = PUD_SIZE; } } @@ -165,14 +176,14 @@ void free_boot_hyp_pgd(void) mutex_lock(&kvm_hyp_pgd_mutex); if (boot_hyp_pgd) { - unmap_range(boot_hyp_pgd, hyp_idmap_start, PAGE_SIZE); - unmap_range(boot_hyp_pgd, TRAMPOLINE_VA, PAGE_SIZE); + unmap_range(NULL, boot_hyp_pgd, hyp_idmap_start, PAGE_SIZE); + unmap_range(NULL, boot_hyp_pgd, TRAMPOLINE_VA, PAGE_SIZE); kfree(boot_hyp_pgd); boot_hyp_pgd = NULL; } if (hyp_pgd) - unmap_range(hyp_pgd, TRAMPOLINE_VA, PAGE_SIZE); + unmap_range(NULL, hyp_pgd, TRAMPOLINE_VA, PAGE_SIZE); kfree(init_bounce_page); init_bounce_page = NULL; @@ -200,9 +211,10 @@ void free_hyp_pgds(void) if (hyp_pgd) { for (addr = PAGE_OFFSET; virt_addr_valid(addr); addr += PGDIR_SIZE) - unmap_range(hyp_pgd, KERN_TO_HYP(addr), PGDIR_SIZE); + unmap_range(NULL, hyp_pgd, KERN_TO_HYP(addr), PGDIR_SIZE); for (addr = VMALLOC_START; is_vmalloc_addr((void*)addr); addr += PGDIR_SIZE) - unmap_range(hyp_pgd, KERN_TO_HYP(addr), PGDIR_SIZE); + unmap_range(NULL, hyp_pgd, KERN_TO_HYP(addr), PGDIR_SIZE); + kfree(hyp_pgd); hyp_pgd = NULL; } @@ -393,7 +405,7 @@ int kvm_alloc_stage2_pgd(struct kvm *kvm) */ static void unmap_stage2_range(struct kvm *kvm, phys_addr_t start, u64 size) { - unmap_range(kvm->arch.pgd, start, size); + unmap_range(kvm, kvm->arch.pgd, start, size); } /** @@ -675,7 +687,6 @@ static void handle_hva_to_gpa(struct kvm *kvm, static void kvm_unmap_hva_handler(struct kvm *kvm, gpa_t gpa, void *data) { unmap_stage2_range(kvm, gpa, PAGE_SIZE); - kvm_tlb_flush_vmid_ipa(kvm, gpa); } int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) -- cgit v0.10.2 From 103f98ea64a1b0a67d8a1b23070b4db3533db2b8 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 30 May 2013 13:22:39 +0200 Subject: KVM: Emulate multibyte NOP This is encountered when booting RHEL5.9 64-bit. There is another bug after this one that is not a simple emulation failure, but this one lets the boot proceed a bit. Cc: # 3.9 Signed-off-by: Paolo Bonzini Signed-off-by: Gleb Natapov diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 8db0010..0f42c2a 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3997,7 +3997,8 @@ static const struct opcode twobyte_table[256] = { DI(ImplicitOps | Priv, invd), DI(ImplicitOps | Priv, wbinvd), N, N, N, D(ImplicitOps | ModRM), N, N, /* 0x10 - 0x1F */ - N, N, N, N, N, N, N, N, D(ImplicitOps | ModRM), N, N, N, N, N, N, N, + N, N, N, N, N, N, N, N, + D(ImplicitOps | ModRM), N, N, N, N, N, N, D(ImplicitOps | ModRM), /* 0x20 - 0x2F */ DIP(ModRM | DstMem | Priv | Op3264, cr_read, check_cr_read), DIP(ModRM | DstMem | Priv | Op3264, dr_read, check_dr_read), @@ -4836,6 +4837,7 @@ twobyte_insn: case 0x08: /* invd */ case 0x0d: /* GrpP (prefetch) */ case 0x18: /* Grp16 (prefetch/nop) */ + case 0x1f: /* nop */ break; case 0x20: /* mov cr, reg */ ctxt->dst.val = ops->get_cr(ctxt, ctxt->modrm_reg); -- cgit v0.10.2 From 8acb42070ec4c87a9baab5c7bac626030d5bef28 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 30 May 2013 16:35:55 +0200 Subject: KVM: fix sil/dil/bpl/spl in the mod/rm fields The x86-64 extended low-byte registers were fetched correctly from reg, but not from mod/rm. This fixes another bug in the boot of RHEL5.9 64-bit, but it is still not enough. Cc: # 3.9 Signed-off-by: Paolo Bonzini Signed-off-by: Gleb Natapov diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 0f42c2a..5953dce 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1240,9 +1240,12 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt, ctxt->modrm_seg = VCPU_SREG_DS; if (ctxt->modrm_mod == 3) { + int highbyte_regs = ctxt->rex_prefix == 0; + op->type = OP_REG; op->bytes = (ctxt->d & ByteOp) ? 1 : ctxt->op_bytes; - op->addr.reg = decode_register(ctxt, ctxt->modrm_rm, ctxt->d & ByteOp); + op->addr.reg = decode_register(ctxt, ctxt->modrm_rm, + highbyte_regs && (ctxt->d & ByteOp)); if (ctxt->d & Sse) { op->type = OP_XMM; op->bytes = 16; -- cgit v0.10.2 From 299018f44ac553dce3caf84df1d14c4764faa279 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Mon, 3 Jun 2013 11:30:02 +0300 Subject: KVM: Fix race in apic->pending_events processing apic->pending_events processing has a race that may cause INIT and SIPI processing to be reordered: vpu0: vcpu1: set INIT test_and_clear_bit(KVM_APIC_INIT) process INIT set INIT set SIPI test_and_clear_bit(KVM_APIC_SIPI) process SIPI At the end INIT is left pending in pending_events. The following patch fixes this by latching pending event before processing them. Signed-off-by: Gleb Natapov diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index e1adbb4..0eee2c8 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1861,11 +1861,14 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu) { struct kvm_lapic *apic = vcpu->arch.apic; unsigned int sipi_vector; + unsigned long pe; - if (!kvm_vcpu_has_lapic(vcpu)) + if (!kvm_vcpu_has_lapic(vcpu) || !apic->pending_events) return; - if (test_and_clear_bit(KVM_APIC_INIT, &apic->pending_events)) { + pe = xchg(&apic->pending_events, 0); + + if (test_bit(KVM_APIC_INIT, &pe)) { kvm_lapic_reset(vcpu); kvm_vcpu_reset(vcpu); if (kvm_vcpu_is_bsp(apic->vcpu)) @@ -1873,7 +1876,7 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu) else vcpu->arch.mp_state = KVM_MP_STATE_INIT_RECEIVED; } - if (test_and_clear_bit(KVM_APIC_SIPI, &apic->pending_events) && + if (test_bit(KVM_APIC_SIPI, &pe) && vcpu->arch.mp_state == KVM_MP_STATE_INIT_RECEIVED) { /* evaluate pending_events before reading the vector */ smp_rmb(); -- cgit v0.10.2 From 8706a6b6303dd75c7ee2baf2161de0f5a2fbdd8b Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Thu, 30 May 2013 15:10:52 +0200 Subject: microblaze: Fix sparse warnings arch/microblaze/include/asm/uaccess.h:101:3: warning: cast removes address space of expression arch/microblaze/include/asm/uaccess.h:107:2: warning: cast removes address space of expression Signed-off-by: Michal Simek diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h index efe59d8..04e4955 100644 --- a/arch/microblaze/include/asm/uaccess.h +++ b/arch/microblaze/include/asm/uaccess.h @@ -99,13 +99,13 @@ static inline int access_ok(int type, const void __user *addr, if ((get_fs().seg < ((unsigned long)addr)) || (get_fs().seg < ((unsigned long)addr + size - 1))) { pr_debug("ACCESS fail: %s at 0x%08x (size 0x%x), seg 0x%08x\n", - type ? "WRITE" : "READ ", (u32)addr, (u32)size, + type ? "WRITE" : "READ ", (__force u32)addr, (u32)size, (u32)get_fs().seg); return 0; } ok: pr_debug("ACCESS OK: %s at 0x%08x (size 0x%x), seg 0x%08x\n", - type ? "WRITE" : "READ ", (u32)addr, (u32)size, + type ? "WRITE" : "READ ", (__force u32)addr, (u32)size, (u32)get_fs().seg); return 1; } -- cgit v0.10.2 From 056790923e1c4eed5d8cc502e1092944a2b23025 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 1 Jun 2013 23:13:53 +0100 Subject: ASoC: pcm: Require both CODEC and CPU support when declaring stream caps When declaring playback and capture capabilities check for both CODEC side and CPU side support rather than only checking for CODEC side support. While it is unusual some CPUs do have unidirectional DAIs. Reported-by: Fabio Estevam Tested-by: Fabio Estevam Acked-by: Liam Girdwood Signed-off-by: Mark Brown diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 73bb8ee..a9fddf0 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -2011,9 +2011,11 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) if (cpu_dai->driver->capture.channels_min) capture = 1; } else { - if (codec_dai->driver->playback.channels_min) + if (codec_dai->driver->playback.channels_min && + cpu_dai->driver->playback.channels_min) playback = 1; - if (codec_dai->driver->capture.channels_min) + if (codec_dai->driver->capture.channels_min && + cpu_dai->driver->capture.channels_min) capture = 1; } -- cgit v0.10.2 From b7ea85a4fed37835eec78a7be3039c8dc22b8178 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Tue, 21 May 2013 06:23:43 +0000 Subject: drm: fix a use-after-free when GPU acceleration disabled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When GPU acceleration is disabled, drm_vblank_cleanup() will free the vblank-related data, such as vblank_refcount, vblank_inmodeset, etc. But we found that drm_vblank_post_modeset() may be called after the cleanup, which use vblank_refcount and vblank_inmodeset. And this will cause a kernel panic. Fix this by return immediately if dev->num_crtcs is zero. This is the same thing that drm_vblank_pre_modeset() does. Call trace of a drm_vblank_post_modeset() after drm_vblank_cleanup(): [ 62.628906] [] drm_vblank_post_modeset+0x34/0xb4 [ 62.628906] [] atombios_crtc_dpms+0xb4/0x174 [ 62.628906] [] atombios_crtc_commit+0x18/0x38 [ 62.628906] [] drm_crtc_helper_set_mode+0x304/0x3cc [ 62.628906] [] drm_crtc_helper_set_config+0x6d8/0x988 [ 62.628906] [] drm_fb_helper_set_par+0x94/0x104 [ 62.628906] [] fbcon_init+0x424/0x57c [ 62.628906] [] visual_init+0xb8/0x118 [ 62.628906] [] take_over_console+0x238/0x384 [ 62.628906] [] fbcon_takeover+0x7c/0xdc [ 62.628906] [] notifier_call_chain+0x44/0x94 [ 62.628906] [] __blocking_notifier_call_chain+0x48/0x68 [ 62.628906] [] register_framebuffer+0x228/0x260 [ 62.628906] [] drm_fb_helper_single_fb_probe+0x260/0x314 [ 62.628906] [] drm_fb_helper_initial_config+0x200/0x234 [ 62.628906] [] radeon_fbdev_init+0xd4/0xf4 [ 62.628906] [] radeon_modeset_init+0x9bc/0xa18 [ 62.628906] [] radeon_driver_load_kms+0xdc/0x12c [ 62.628906] [] drm_get_pci_dev+0x148/0x238 [ 62.628906] [] local_pci_probe+0x5c/0xd0 [ 62.628906] [] work_for_cpu_fn+0x1c/0x30 [ 62.628906] [] process_one_work+0x274/0x3bc [ 62.628906] [] process_scheduled_works+0x24/0x44 [ 62.628906] [] worker_thread+0x31c/0x3f4 [ 62.628906] [] kthread+0x88/0x90 [ 62.628906] [] kernel_thread_helper+0x10/0x18 Signed-off-by: Huacai Chen Signed-off-by: Binbin Zhou Cc: Reviewed-by: Michel Dänzer Acked-by: Paul Menzel Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index a6a8643..8bcce78 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -1054,7 +1054,7 @@ EXPORT_SYMBOL(drm_vblank_off); */ void drm_vblank_pre_modeset(struct drm_device *dev, int crtc) { - /* vblank is not initialized (IRQ not installed ?) */ + /* vblank is not initialized (IRQ not installed ?), or has been freed */ if (!dev->num_crtcs) return; /* @@ -1076,6 +1076,10 @@ void drm_vblank_post_modeset(struct drm_device *dev, int crtc) { unsigned long irqflags; + /* vblank is not initialized (IRQ not installed ?), or has been freed */ + if (!dev->num_crtcs) + return; + if (dev->vblank_inmodeset[crtc]) { spin_lock_irqsave(&dev->vbl_lock, irqflags); dev->vblank_disable_allowed = 1; -- cgit v0.10.2 From 1ed7fad6dbb211142cb61169d8d0bbbb049d4de1 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 31 May 2013 22:22:47 +0000 Subject: drm/tilcd: select BACKLIGHT_LCD_SUPPORT The dependecies for BACKLIGHT_CLASS_DEVICE are defined a bit strange, but it seems one has to always select both BACKLIGHT_CLASS_DEVICE and BACKLIGHT_LCD_SUPPORT to avoid this error: drivers/gpu/drm/tilcdc/tilcdc_panel.c:396: undefined reference to `of_find_backlight_by_node' Cc: Rob Clark Cc: dri-devel@lists.freedesktop.org Cc: Dave Airlie Signed-off-by: Arnd Bergmann Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/tilcdc/Kconfig b/drivers/gpu/drm/tilcdc/Kconfig index e461e99..7a4d101 100644 --- a/drivers/gpu/drm/tilcdc/Kconfig +++ b/drivers/gpu/drm/tilcdc/Kconfig @@ -6,6 +6,7 @@ config DRM_TILCDC select DRM_GEM_CMA_HELPER select VIDEOMODE_HELPERS select BACKLIGHT_CLASS_DEVICE + select BACKLIGHT_LCD_SUPPORT help Choose this option if you have an TI SoC with LCDC display controller, for example AM33xx in beagle-bone, DA8xx, or -- cgit v0.10.2 From b06f6a9d06f4b0fa38bd3e32714106d824470813 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 31 May 2013 22:22:40 +0000 Subject: drm/nouveau: use mdelay instead of large udelay constants ARM cannot handle udelay for more than 2 miliseconds, so we should use mdelay instead for those. Signed-off-by: Arnd Bergmann Cc: David Airlie Cc: Ben Skeggs Cc: dri-devel@lists.freedesktop.org Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c index d0817d9..ed7415e 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c @@ -51,7 +51,8 @@ nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval) const u32 doff = (or * 0x800); int load = -EINVAL; nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval); - udelay(9500); + mdelay(9); + udelay(500); nv_wr32(priv, 0x61a00c + doff, 0x80000000); load = (nv_rd32(priv, 0x61a00c + doff) & 0x38000000) >> 27; nv_wr32(priv, 0x61a00c + doff, 0x00000000); -- cgit v0.10.2 From 91f8f105f2b82b4a38dee2d74760bc39d40ec42c Mon Sep 17 00:00:00 2001 From: Christopher Harvey Date: Fri, 31 May 2013 20:33:07 +0000 Subject: drm/mgag200: Add missing write to index before accessing data register This is a bug fix for some versions of g200se cards while doing mode-setting. Signed-off-by: Christopher Harvey Tested-by: Julia Lemire Acked-by: Julia Lemire Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 77b8a45..ee66bad 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -1034,13 +1034,14 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, else hi_pri_lvl = 5; - WREG8(0x1fde, 0x06); - WREG8(0x1fdf, hi_pri_lvl); + WREG8(MGAREG_CRTCEXT_INDEX, 0x06); + WREG8(MGAREG_CRTCEXT_DATA, hi_pri_lvl); } else { + WREG8(MGAREG_CRTCEXT_INDEX, 0x06); if (mdev->reg_1e24 >= 0x01) - WREG8(0x1fdf, 0x03); + WREG8(MGAREG_CRTCEXT_DATA, 0x03); else - WREG8(0x1fdf, 0x04); + WREG8(MGAREG_CRTCEXT_DATA, 0x04); } } return 0; -- cgit v0.10.2 From 768dc16397fb18c9de209cbcb84d890b8279faa7 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 28 May 2013 17:17:45 +0200 Subject: arm: omap2: fix AM33xx hwmod infos for UART2 The UART2 hwmod structure is pointing to the EDMA channels of UART1, which doesn't look right. This patch fixes this by making the UART2 hwmod structure to a new structure that lists the EDMA channels to be used by the UART2. Signed-off-by: Thomas Petazzoni Acked-by: Vaibhav Hiremath [paul@pwsan.com: updated to apply] Signed-off-by: Paul Walmsley diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c index 075f7cc..69337af 100644 --- a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c @@ -2007,6 +2007,13 @@ static struct omap_hwmod am33xx_uart1_hwmod = { }, }; +/* uart2 */ +static struct omap_hwmod_dma_info uart2_edma_reqs[] = { + { .name = "tx", .dma_req = 28, }, + { .name = "rx", .dma_req = 29, }, + { .dma_req = -1 } +}; + static struct omap_hwmod_irq_info am33xx_uart2_irqs[] = { { .irq = 73 + OMAP_INTC_START, }, { .irq = -1 }, @@ -2018,7 +2025,7 @@ static struct omap_hwmod am33xx_uart2_hwmod = { .clkdm_name = "l4ls_clkdm", .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = am33xx_uart2_irqs, - .sdma_reqs = uart1_edma_reqs, + .sdma_reqs = uart2_edma_reqs, .main_clk = "dpll_per_m2_div4_ck", .prcm = { .omap4 = { -- cgit v0.10.2 From 087c2e3b4e062573dbbc8a50b9208992e3768dcf Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 31 May 2013 13:54:10 +0200 Subject: ALSA: hda/via - Disable broken dynamic power control Since the transition to the generic parser, the actual routes used there don't match always with the assumed static paths in some set_widgets_power_state callbacks. This results in the wrong power setup in the end. As a temporary workaround, we need to disable the calls together with the non-functional dynamic power control enum. Reported-by: Alex Riesen Cc: [v3.9] Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index e0dadcf..75fdb51 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -231,9 +231,14 @@ static void vt1708_update_hp_work(struct hda_codec *codec) static void set_widgets_power_state(struct hda_codec *codec) { +#if 0 /* FIXME: the assumed connections don't match always with the + * actual routes by the generic parser, so better to disable + * the control for safety. + */ struct via_spec *spec = codec->spec; if (spec->set_widgets_power_state) spec->set_widgets_power_state(codec); +#endif } static void update_power_state(struct hda_codec *codec, hda_nid_t nid, -- cgit v0.10.2 From 77afe0e94884ae40de29cd813a1fb7ddee583591 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 31 May 2013 14:10:03 +0200 Subject: ALSA: hda - Allow setting automute/automic hooks after parsing Some codec drivers (VIA codecs and some Realtek fixups) set the automute and automic hooks after calling snd_hda_gen_parse_auto_config(). In the current code, the hook pointers are referred only in snd_hda_gen_parse_auto_config() and passed to snd_hda_jack_detect_enable_callback(), thus changing the hook values won't change the actually called callbacks properly. This patch fixes this bug by setting the static functions as the primary callback functions for the jack detection, and let them calling the appropriate hooks dynamically. Cc: [v3.9] Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index ae85bbd2..fbc10b6 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -3875,6 +3875,36 @@ static void update_automute_all(struct hda_codec *codec) snd_hda_gen_mic_autoswitch(codec, NULL); } +/* call appropriate hooks */ +static void call_hp_automute(struct hda_codec *codec, struct hda_jack_tbl *jack) +{ + struct hda_gen_spec *spec = codec->spec; + if (spec->hp_automute_hook) + spec->hp_automute_hook(codec, jack); + else + snd_hda_gen_hp_automute(codec, jack); +} + +static void call_line_automute(struct hda_codec *codec, + struct hda_jack_tbl *jack) +{ + struct hda_gen_spec *spec = codec->spec; + if (spec->line_automute_hook) + spec->line_automute_hook(codec, jack); + else + snd_hda_gen_line_automute(codec, jack); +} + +static void call_mic_autoswitch(struct hda_codec *codec, + struct hda_jack_tbl *jack) +{ + struct hda_gen_spec *spec = codec->spec; + if (spec->mic_autoswitch_hook) + spec->mic_autoswitch_hook(codec, jack); + else + snd_hda_gen_mic_autoswitch(codec, jack); +} + /* * Auto-Mute mode mixer enum support */ @@ -4009,9 +4039,7 @@ static int check_auto_mute_availability(struct hda_codec *codec) snd_printdd("hda-codec: Enable HP auto-muting on NID 0x%x\n", nid); snd_hda_jack_detect_enable_callback(codec, nid, HDA_GEN_HP_EVENT, - spec->hp_automute_hook ? - spec->hp_automute_hook : - snd_hda_gen_hp_automute); + call_hp_automute); spec->detect_hp = 1; } @@ -4024,9 +4052,7 @@ static int check_auto_mute_availability(struct hda_codec *codec) snd_printdd("hda-codec: Enable Line-Out auto-muting on NID 0x%x\n", nid); snd_hda_jack_detect_enable_callback(codec, nid, HDA_GEN_FRONT_EVENT, - spec->line_automute_hook ? - spec->line_automute_hook : - snd_hda_gen_line_automute); + call_line_automute); spec->detect_lo = 1; } spec->automute_lo_possible = spec->detect_hp; @@ -4068,9 +4094,7 @@ static bool auto_mic_check_imux(struct hda_codec *codec) snd_hda_jack_detect_enable_callback(codec, spec->am_entry[i].pin, HDA_GEN_MIC_EVENT, - spec->mic_autoswitch_hook ? - spec->mic_autoswitch_hook : - snd_hda_gen_mic_autoswitch); + call_mic_autoswitch); return true; } -- cgit v0.10.2 From 05909d5c679cf7c9a8a5bc663677c066a546894f Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 31 May 2013 19:55:54 +0200 Subject: ALSA: hda - Add keep_eapd_on flag to generic parser VT1802 codec seems to reset EAPD of other pins in the hardware level, and this was another reason of the silent headphone output on some machines. As a workaround, introduce a new flag indicating to keep the EPAD on to the generic parser, and set it in patch_via.c. Reported-by: Alex Riesen Cc: [v3.9] Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index fbc10b6..cfdb917 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -788,6 +788,8 @@ static void set_pin_eapd(struct hda_codec *codec, hda_nid_t pin, bool enable) return; if (codec->inv_eapd) enable = !enable; + if (spec->keep_eapd_on && !enable) + return; snd_hda_codec_update_cache(codec, pin, 0, AC_VERB_SET_EAPD_BTLENABLE, enable ? 0x02 : 0x00); diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h index 54e6651..7620031 100644 --- a/sound/pci/hda/hda_generic.h +++ b/sound/pci/hda/hda_generic.h @@ -222,6 +222,7 @@ struct hda_gen_spec { unsigned int multi_cap_vol:1; /* allow multiple capture xxx volumes */ unsigned int inv_dmic_split:1; /* inverted dmic w/a for conexant */ unsigned int own_eapd_ctl:1; /* set EAPD by own function */ + unsigned int keep_eapd_on:1; /* don't turn off EAPD automatically */ unsigned int vmaster_mute_enum:1; /* add vmaster mute mode enum */ unsigned int indep_hp:1; /* independent HP supported */ unsigned int prefer_hp_amp:1; /* enable HP amp for speaker if any */ diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index 75fdb51..a6c3856 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -136,6 +136,7 @@ static struct via_spec *via_new_spec(struct hda_codec *codec) spec->codec_type = VT1708S; spec->no_pin_power_ctl = 1; spec->gen.indep_hp = 1; + spec->gen.keep_eapd_on = 1; spec->gen.pcm_playback_hook = via_playback_pcm_hook; return spec; } -- cgit v0.10.2 From 5a6f294e87974e6ec68d7113553ffd975d83bf15 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 3 Jun 2013 11:17:38 +0200 Subject: ALSA: hda/via - Fix wrongly cleared pins after suspend on VT1802 VIA driver has a special suspend handling only for VT1802 to reduce the pop noise. During the transition to the generic parser, the behavior of snd_hda_set_pin_ctl() was also changed to modify the cached values, too. And this caused a regression where the pin is still cleared even after the resume (including the resume from power save), resulting in the silent output. The fix is simply to replace snd_hda_set_pin_ctl() with the explicit call of snd_hda_codec_write() again. Reported-by: Alex Riesen Cc: [v3.9] Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index a6c3856..e524554 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -484,7 +484,9 @@ static int via_suspend(struct hda_codec *codec) /* Fix pop noise on headphones */ int i; for (i = 0; i < spec->gen.autocfg.hp_outs; i++) - snd_hda_set_pin_ctl(codec, spec->gen.autocfg.hp_pins[i], 0); + snd_hda_codec_write(codec, spec->gen.autocfg.hp_pins[i], + 0, AC_VERB_SET_PIN_WIDGET_CONTROL, + 0x00); } return 0; -- cgit v0.10.2 From 62bc82a82bb1e2b5ee5048c088af7260ddb2b7b5 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 3 Jun 2013 11:30:04 +0200 Subject: microblaze: Use static inline functions in cacheflush.h Using static inline functions ensure proper type checking which also remove compilation warning for no MMU Compilation warning: arch/microblaze/include/asm/cacheflush.h: warning: 'addr' may be used uninitialized in this function [-Wmaybe-uninitialized] Signed-off-by: Michal Simek diff --git a/arch/microblaze/include/asm/cacheflush.h b/arch/microblaze/include/asm/cacheflush.h index 0f553bc..ffea82a 100644 --- a/arch/microblaze/include/asm/cacheflush.h +++ b/arch/microblaze/include/asm/cacheflush.h @@ -102,21 +102,23 @@ do { \ #define flush_cache_range(vma, start, len) do { } while (0) -#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ -do { \ - u32 addr = virt_to_phys(dst); \ - memcpy((dst), (src), (len)); \ - if (vma->vm_flags & VM_EXEC) { \ - invalidate_icache_range((unsigned) (addr), \ - (unsigned) (addr) + PAGE_SIZE); \ - flush_dcache_range((unsigned) (addr), \ - (unsigned) (addr) + PAGE_SIZE); \ - } \ -} while (0) - -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ -do { \ - memcpy((dst), (src), (len)); \ -} while (0) +static inline void copy_to_user_page(struct vm_area_struct *vma, + struct page *page, unsigned long vaddr, + void *dst, void *src, int len) +{ + u32 addr = virt_to_phys(dst); + memcpy(dst, src, len); + if (vma->vm_flags & VM_EXEC) { + invalidate_icache_range(addr, addr + PAGE_SIZE); + flush_dcache_range(addr, addr + PAGE_SIZE); + } +} + +static inline void copy_from_user_page(struct vm_area_struct *vma, + struct page *page, unsigned long vaddr, + void *dst, void *src, int len) +{ + memcpy(dst, src, len); +} #endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */ -- cgit v0.10.2 From 963afde9509c4bef1b06be7117d018a8da26480a Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 31 May 2013 15:20:31 +0200 Subject: ALSA: hda/via - Clean up duplicated codes The previous commit was written in the way to make the backport to 3.9.y easier, and left the duplicated open codes intentionally. Now let's clean up the duplicated codes. Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index cfdb917..4b1524a 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -1940,17 +1940,7 @@ static int create_speaker_out_ctls(struct hda_codec *codec) * independent HP controls */ -/* update HP auto-mute state too */ -static void update_hp_automute_hook(struct hda_codec *codec) -{ - struct hda_gen_spec *spec = codec->spec; - - if (spec->hp_automute_hook) - spec->hp_automute_hook(codec, NULL); - else - snd_hda_gen_hp_automute(codec, NULL); -} - +static void call_hp_automute(struct hda_codec *codec, struct hda_jack_tbl *jack); static int indep_hp_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { @@ -2011,7 +2001,7 @@ static int indep_hp_put(struct snd_kcontrol *kcontrol, else *dacp = spec->alt_dac_nid; - update_hp_automute_hook(codec); + call_hp_automute(codec, NULL); ret = 1; } unlock: @@ -2307,7 +2297,7 @@ static void update_hp_mic(struct hda_codec *codec, int adc_mux, bool force) else val = PIN_HP; set_pin_target(codec, pin, val, true); - update_hp_automute_hook(codec); + call_hp_automute(codec, NULL); } } @@ -2716,7 +2706,7 @@ static int hp_mic_jack_mode_put(struct snd_kcontrol *kcontrol, val = snd_hda_get_default_vref(codec, nid); } snd_hda_set_pin_ctl_cache(codec, nid, val); - update_hp_automute_hook(codec); + call_hp_automute(codec, NULL); return 1; } @@ -3861,22 +3851,6 @@ void snd_hda_gen_mic_autoswitch(struct hda_codec *codec, struct hda_jack_tbl *ja } EXPORT_SYMBOL_HDA(snd_hda_gen_mic_autoswitch); -/* update jack retasking */ -static void update_automute_all(struct hda_codec *codec) -{ - struct hda_gen_spec *spec = codec->spec; - - update_hp_automute_hook(codec); - if (spec->line_automute_hook) - spec->line_automute_hook(codec, NULL); - else - snd_hda_gen_line_automute(codec, NULL); - if (spec->mic_autoswitch_hook) - spec->mic_autoswitch_hook(codec, NULL); - else - snd_hda_gen_mic_autoswitch(codec, NULL); -} - /* call appropriate hooks */ static void call_hp_automute(struct hda_codec *codec, struct hda_jack_tbl *jack) { @@ -3907,6 +3881,14 @@ static void call_mic_autoswitch(struct hda_codec *codec, snd_hda_gen_mic_autoswitch(codec, jack); } +/* update jack retasking */ +static void update_automute_all(struct hda_codec *codec) +{ + call_hp_automute(codec, NULL); + call_line_automute(codec, NULL); + call_mic_autoswitch(codec, NULL); +} + /* * Auto-Mute mode mixer enum support */ -- cgit v0.10.2 From a90f13b24fb40d02d11496cce6a10ae8d4b319b2 Mon Sep 17 00:00:00 2001 From: Jonas Peterson Date: Tue, 7 May 2013 22:05:23 +0200 Subject: net: can: kvaser_usb: fix reception on "USBcan Pro" and "USBcan R" type hardware. Unlike Kvaser Leaf light devices, some other Kvaser devices (like USBcan Pro, USBcan R) receive CAN messages in CMD_LOG_MESSAGE frames. This patch adds support for it. Cc: linux-stable # >= v3.8 Signed-off-by: Jonas Peterson Signed-off-by: Olivier Sobrie Signed-off-by: Marc Kleine-Budde diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index 45cb9f3..3b95465 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -136,6 +136,9 @@ #define KVASER_CTRL_MODE_SELFRECEPTION 3 #define KVASER_CTRL_MODE_OFF 4 +/* log message */ +#define KVASER_EXTENDED_FRAME BIT(31) + struct kvaser_msg_simple { u8 tid; u8 channel; @@ -817,8 +820,13 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev, priv = dev->nets[channel]; stats = &priv->netdev->stats; - if (msg->u.rx_can.flag & (MSG_FLAG_ERROR_FRAME | MSG_FLAG_NERR | - MSG_FLAG_OVERRUN)) { + if ((msg->u.rx_can.flag & MSG_FLAG_ERROR_FRAME) && + (msg->id == CMD_LOG_MESSAGE)) { + kvaser_usb_rx_error(dev, msg); + return; + } else if (msg->u.rx_can.flag & (MSG_FLAG_ERROR_FRAME | + MSG_FLAG_NERR | + MSG_FLAG_OVERRUN)) { kvaser_usb_rx_can_err(priv, msg); return; } else if (msg->u.rx_can.flag & ~MSG_FLAG_REMOTE_FRAME) { @@ -834,22 +842,40 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev, return; } - cf->can_id = ((msg->u.rx_can.msg[0] & 0x1f) << 6) | - (msg->u.rx_can.msg[1] & 0x3f); - cf->can_dlc = get_can_dlc(msg->u.rx_can.msg[5]); + if (msg->id == CMD_LOG_MESSAGE) { + cf->can_id = le32_to_cpu(msg->u.log_message.id); + if (cf->can_id & KVASER_EXTENDED_FRAME) + cf->can_id &= CAN_EFF_MASK | CAN_EFF_FLAG; + else + cf->can_id &= CAN_SFF_MASK; - if (msg->id == CMD_RX_EXT_MESSAGE) { - cf->can_id <<= 18; - cf->can_id |= ((msg->u.rx_can.msg[2] & 0x0f) << 14) | - ((msg->u.rx_can.msg[3] & 0xff) << 6) | - (msg->u.rx_can.msg[4] & 0x3f); - cf->can_id |= CAN_EFF_FLAG; - } + cf->can_dlc = get_can_dlc(msg->u.log_message.dlc); - if (msg->u.rx_can.flag & MSG_FLAG_REMOTE_FRAME) - cf->can_id |= CAN_RTR_FLAG; - else - memcpy(cf->data, &msg->u.rx_can.msg[6], cf->can_dlc); + if (msg->u.log_message.flags & MSG_FLAG_REMOTE_FRAME) + cf->can_id |= CAN_RTR_FLAG; + else + memcpy(cf->data, &msg->u.log_message.data, + cf->can_dlc); + } else { + cf->can_id = ((msg->u.rx_can.msg[0] & 0x1f) << 6) | + (msg->u.rx_can.msg[1] & 0x3f); + + if (msg->id == CMD_RX_EXT_MESSAGE) { + cf->can_id <<= 18; + cf->can_id |= ((msg->u.rx_can.msg[2] & 0x0f) << 14) | + ((msg->u.rx_can.msg[3] & 0xff) << 6) | + (msg->u.rx_can.msg[4] & 0x3f); + cf->can_id |= CAN_EFF_FLAG; + } + + cf->can_dlc = get_can_dlc(msg->u.rx_can.msg[5]); + + if (msg->u.rx_can.flag & MSG_FLAG_REMOTE_FRAME) + cf->can_id |= CAN_RTR_FLAG; + else + memcpy(cf->data, &msg->u.rx_can.msg[6], + cf->can_dlc); + } netif_rx(skb); @@ -911,6 +937,7 @@ static void kvaser_usb_handle_message(const struct kvaser_usb *dev, case CMD_RX_STD_MESSAGE: case CMD_RX_EXT_MESSAGE: + case CMD_LOG_MESSAGE: kvaser_usb_rx_can_msg(dev, msg); break; @@ -919,11 +946,6 @@ static void kvaser_usb_handle_message(const struct kvaser_usb *dev, kvaser_usb_rx_error(dev, msg); break; - case CMD_LOG_MESSAGE: - if (msg->u.log_message.flags & MSG_FLAG_ERROR_FRAME) - kvaser_usb_rx_error(dev, msg); - break; - case CMD_TX_ACKNOWLEDGE: kvaser_usb_tx_acknowledge(dev, msg); break; -- cgit v0.10.2 From fae37f81fdf3680c5d70abdc57e7b83f4b6c266a Mon Sep 17 00:00:00 2001 From: Olivier Sobrie Date: Fri, 18 Jan 2013 09:14:04 +0100 Subject: net: can: esd_usb2: Do not do dma on the stack smatch reports the following warnings: drivers/net/can/usb/esd_usb2.c:640 esd_usb2_start() error: doing dma on the stack (&msg) drivers/net/can/usb/esd_usb2.c:846 esd_usb2_close() error: doing dma on the stack (&msg) drivers/net/can/usb/esd_usb2.c:855 esd_usb2_close() error: doing dma on the stack (&msg) drivers/net/can/usb/esd_usb2.c:923 esd_usb2_set_bittiming() error: doing dma on the stack (&msg) drivers/net/can/usb/esd_usb2.c:1047 esd_usb2_probe() error: doing dma on the stack (&msg) drivers/net/can/usb/esd_usb2.c:1053 esd_usb2_probe() error: doing dma on the stack (&msg) See "Documentation/DMA-API-HOWTO.txt" section "What memory is DMA'able?" Signed-off-by: Olivier Sobrie Cc: Matthias Fuchs Signed-off-by: Marc Kleine-Budde diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c index 9b74d1e..6aa7b32 100644 --- a/drivers/net/can/usb/esd_usb2.c +++ b/drivers/net/can/usb/esd_usb2.c @@ -612,9 +612,15 @@ static int esd_usb2_start(struct esd_usb2_net_priv *priv) { struct esd_usb2 *dev = priv->usb2; struct net_device *netdev = priv->netdev; - struct esd_usb2_msg msg; + struct esd_usb2_msg *msg; int err, i; + msg = kmalloc(sizeof(*msg), GFP_KERNEL); + if (!msg) { + err = -ENOMEM; + goto out; + } + /* * Enable all IDs * The IDADD message takes up to 64 32 bit bitmasks (2048 bits). @@ -628,33 +634,32 @@ static int esd_usb2_start(struct esd_usb2_net_priv *priv) * the number of the starting bitmask (0..64) to the filter.option * field followed by only some bitmasks. */ - msg.msg.hdr.cmd = CMD_IDADD; - msg.msg.hdr.len = 2 + ESD_MAX_ID_SEGMENT; - msg.msg.filter.net = priv->index; - msg.msg.filter.option = ESD_ID_ENABLE; /* start with segment 0 */ + msg->msg.hdr.cmd = CMD_IDADD; + msg->msg.hdr.len = 2 + ESD_MAX_ID_SEGMENT; + msg->msg.filter.net = priv->index; + msg->msg.filter.option = ESD_ID_ENABLE; /* start with segment 0 */ for (i = 0; i < ESD_MAX_ID_SEGMENT; i++) - msg.msg.filter.mask[i] = cpu_to_le32(0xffffffff); + msg->msg.filter.mask[i] = cpu_to_le32(0xffffffff); /* enable 29bit extended IDs */ - msg.msg.filter.mask[ESD_MAX_ID_SEGMENT] = cpu_to_le32(0x00000001); + msg->msg.filter.mask[ESD_MAX_ID_SEGMENT] = cpu_to_le32(0x00000001); - err = esd_usb2_send_msg(dev, &msg); + err = esd_usb2_send_msg(dev, msg); if (err) - goto failed; + goto out; err = esd_usb2_setup_rx_urbs(dev); if (err) - goto failed; + goto out; priv->can.state = CAN_STATE_ERROR_ACTIVE; - return 0; - -failed: +out: if (err == -ENODEV) netif_device_detach(netdev); + if (err) + netdev_err(netdev, "couldn't start device: %d\n", err); - netdev_err(netdev, "couldn't start device: %d\n", err); - + kfree(msg); return err; } @@ -833,26 +838,30 @@ nourbmem: static int esd_usb2_close(struct net_device *netdev) { struct esd_usb2_net_priv *priv = netdev_priv(netdev); - struct esd_usb2_msg msg; + struct esd_usb2_msg *msg; int i; + msg = kmalloc(sizeof(*msg), GFP_KERNEL); + if (!msg) + return -ENOMEM; + /* Disable all IDs (see esd_usb2_start()) */ - msg.msg.hdr.cmd = CMD_IDADD; - msg.msg.hdr.len = 2 + ESD_MAX_ID_SEGMENT; - msg.msg.filter.net = priv->index; - msg.msg.filter.option = ESD_ID_ENABLE; /* start with segment 0 */ + msg->msg.hdr.cmd = CMD_IDADD; + msg->msg.hdr.len = 2 + ESD_MAX_ID_SEGMENT; + msg->msg.filter.net = priv->index; + msg->msg.filter.option = ESD_ID_ENABLE; /* start with segment 0 */ for (i = 0; i <= ESD_MAX_ID_SEGMENT; i++) - msg.msg.filter.mask[i] = 0; - if (esd_usb2_send_msg(priv->usb2, &msg) < 0) + msg->msg.filter.mask[i] = 0; + if (esd_usb2_send_msg(priv->usb2, msg) < 0) netdev_err(netdev, "sending idadd message failed\n"); /* set CAN controller to reset mode */ - msg.msg.hdr.len = 2; - msg.msg.hdr.cmd = CMD_SETBAUD; - msg.msg.setbaud.net = priv->index; - msg.msg.setbaud.rsvd = 0; - msg.msg.setbaud.baud = cpu_to_le32(ESD_USB2_NO_BAUDRATE); - if (esd_usb2_send_msg(priv->usb2, &msg) < 0) + msg->msg.hdr.len = 2; + msg->msg.hdr.cmd = CMD_SETBAUD; + msg->msg.setbaud.net = priv->index; + msg->msg.setbaud.rsvd = 0; + msg->msg.setbaud.baud = cpu_to_le32(ESD_USB2_NO_BAUDRATE); + if (esd_usb2_send_msg(priv->usb2, msg) < 0) netdev_err(netdev, "sending setbaud message failed\n"); priv->can.state = CAN_STATE_STOPPED; @@ -861,6 +870,8 @@ static int esd_usb2_close(struct net_device *netdev) close_candev(netdev); + kfree(msg); + return 0; } @@ -886,7 +897,8 @@ static int esd_usb2_set_bittiming(struct net_device *netdev) { struct esd_usb2_net_priv *priv = netdev_priv(netdev); struct can_bittiming *bt = &priv->can.bittiming; - struct esd_usb2_msg msg; + struct esd_usb2_msg *msg; + int err; u32 canbtr; int sjw_shift; @@ -912,15 +924,22 @@ static int esd_usb2_set_bittiming(struct net_device *netdev) if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) canbtr |= ESD_USB2_3_SAMPLES; - msg.msg.hdr.len = 2; - msg.msg.hdr.cmd = CMD_SETBAUD; - msg.msg.setbaud.net = priv->index; - msg.msg.setbaud.rsvd = 0; - msg.msg.setbaud.baud = cpu_to_le32(canbtr); + msg = kmalloc(sizeof(*msg), GFP_KERNEL); + if (!msg) + return -ENOMEM; + + msg->msg.hdr.len = 2; + msg->msg.hdr.cmd = CMD_SETBAUD; + msg->msg.setbaud.net = priv->index; + msg->msg.setbaud.rsvd = 0; + msg->msg.setbaud.baud = cpu_to_le32(canbtr); netdev_info(netdev, "setting BTR=%#x\n", canbtr); - return esd_usb2_send_msg(priv->usb2, &msg); + err = esd_usb2_send_msg(priv->usb2, msg); + + kfree(msg); + return err; } static int esd_usb2_get_berr_counter(const struct net_device *netdev, @@ -1022,7 +1041,7 @@ static int esd_usb2_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct esd_usb2 *dev; - struct esd_usb2_msg msg; + struct esd_usb2_msg *msg; int i, err; dev = kzalloc(sizeof(*dev), GFP_KERNEL); @@ -1037,27 +1056,33 @@ static int esd_usb2_probe(struct usb_interface *intf, usb_set_intfdata(intf, dev); + msg = kmalloc(sizeof(*msg), GFP_KERNEL); + if (!msg) { + err = -ENOMEM; + goto free_msg; + } + /* query number of CAN interfaces (nets) */ - msg.msg.hdr.cmd = CMD_VERSION; - msg.msg.hdr.len = 2; - msg.msg.version.rsvd = 0; - msg.msg.version.flags = 0; - msg.msg.version.drv_version = 0; + msg->msg.hdr.cmd = CMD_VERSION; + msg->msg.hdr.len = 2; + msg->msg.version.rsvd = 0; + msg->msg.version.flags = 0; + msg->msg.version.drv_version = 0; - err = esd_usb2_send_msg(dev, &msg); + err = esd_usb2_send_msg(dev, msg); if (err < 0) { dev_err(&intf->dev, "sending version message failed\n"); - goto free_dev; + goto free_msg; } - err = esd_usb2_wait_msg(dev, &msg); + err = esd_usb2_wait_msg(dev, msg); if (err < 0) { dev_err(&intf->dev, "no version message answer\n"); - goto free_dev; + goto free_msg; } - dev->net_count = (int)msg.msg.version_reply.nets; - dev->version = le32_to_cpu(msg.msg.version_reply.version); + dev->net_count = (int)msg->msg.version_reply.nets; + dev->version = le32_to_cpu(msg->msg.version_reply.version); if (device_create_file(&intf->dev, &dev_attr_firmware)) dev_err(&intf->dev, @@ -1075,10 +1100,10 @@ static int esd_usb2_probe(struct usb_interface *intf, for (i = 0; i < dev->net_count; i++) esd_usb2_probe_one_net(intf, i); - return 0; - -free_dev: - kfree(dev); +free_msg: + kfree(msg); + if (err) + kfree(dev); done: return err; } -- cgit v0.10.2 From f14e22435a27ef183bbfa78f77ad86644c0b354c Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 16 May 2013 11:36:40 +0200 Subject: net: can: peak_usb: Do not do dma on the stack smatch reports the following warnings: drivers/net/can/usb/peak_usb/pcan_usb_pro.c:514 pcan_usb_pro_drv_loaded() error: doing dma on the stack (buffer) drivers/net/can/usb/peak_usb/pcan_usb_pro.c:878 pcan_usb_pro_init() error: doing dma on the stack (&fi) drivers/net/can/usb/peak_usb/pcan_usb_pro.c:889 pcan_usb_pro_init() error: doing dma on the stack (&bi) See "Documentation/DMA-API-HOWTO.txt" section "What memory is DMA'able?" Cc: Stephane Grosjean Signed-off-by: Marc Kleine-Budde diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c index 30d79bf..8ee9d15 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c @@ -504,15 +504,24 @@ static int pcan_usb_pro_restart_async(struct peak_usb_device *dev, return usb_submit_urb(urb, GFP_ATOMIC); } -static void pcan_usb_pro_drv_loaded(struct peak_usb_device *dev, int loaded) +static int pcan_usb_pro_drv_loaded(struct peak_usb_device *dev, int loaded) { - u8 buffer[16]; + u8 *buffer; + int err; + + buffer = kmalloc(PCAN_USBPRO_FCT_DRVLD_REQ_LEN, GFP_KERNEL); + if (!buffer) + return -ENOMEM; buffer[0] = 0; buffer[1] = !!loaded; - pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_FCT, - PCAN_USBPRO_FCT_DRVLD, buffer, sizeof(buffer)); + err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_FCT, + PCAN_USBPRO_FCT_DRVLD, buffer, + PCAN_USBPRO_FCT_DRVLD_REQ_LEN); + kfree(buffer); + + return err; } static inline @@ -851,21 +860,24 @@ static int pcan_usb_pro_stop(struct peak_usb_device *dev) */ static int pcan_usb_pro_init(struct peak_usb_device *dev) { - struct pcan_usb_pro_interface *usb_if; struct pcan_usb_pro_device *pdev = container_of(dev, struct pcan_usb_pro_device, dev); + struct pcan_usb_pro_interface *usb_if = NULL; + struct pcan_usb_pro_fwinfo *fi = NULL; + struct pcan_usb_pro_blinfo *bi = NULL; + int err; /* do this for 1st channel only */ if (!dev->prev_siblings) { - struct pcan_usb_pro_fwinfo fi; - struct pcan_usb_pro_blinfo bi; - int err; - /* allocate netdevices common structure attached to first one */ usb_if = kzalloc(sizeof(struct pcan_usb_pro_interface), GFP_KERNEL); - if (!usb_if) - return -ENOMEM; + fi = kmalloc(sizeof(struct pcan_usb_pro_fwinfo), GFP_KERNEL); + bi = kmalloc(sizeof(struct pcan_usb_pro_blinfo), GFP_KERNEL); + if (!usb_if || !fi || !bi) { + err = -ENOMEM; + goto err_out; + } /* number of ts msgs to ignore before taking one into account */ usb_if->cm_ignore_count = 5; @@ -877,34 +889,34 @@ static int pcan_usb_pro_init(struct peak_usb_device *dev) */ err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO, PCAN_USBPRO_INFO_FW, - &fi, sizeof(fi)); + fi, sizeof(*fi)); if (err) { - kfree(usb_if); dev_err(dev->netdev->dev.parent, "unable to read %s firmware info (err %d)\n", pcan_usb_pro.name, err); - return err; + goto err_out; } err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO, PCAN_USBPRO_INFO_BL, - &bi, sizeof(bi)); + bi, sizeof(*bi)); if (err) { - kfree(usb_if); dev_err(dev->netdev->dev.parent, "unable to read %s bootloader info (err %d)\n", pcan_usb_pro.name, err); - return err; + goto err_out; } + /* tell the device the can driver is running */ + err = pcan_usb_pro_drv_loaded(dev, 1); + if (err) + goto err_out; + dev_info(dev->netdev->dev.parent, "PEAK-System %s hwrev %u serial %08X.%08X (%u channels)\n", pcan_usb_pro.name, - bi.hw_rev, bi.serial_num_hi, bi.serial_num_lo, + bi->hw_rev, bi->serial_num_hi, bi->serial_num_lo, pcan_usb_pro.ctrl_count); - - /* tell the device the can driver is running */ - pcan_usb_pro_drv_loaded(dev, 1); } else { usb_if = pcan_usb_pro_dev_if(dev->prev_siblings); } @@ -916,6 +928,13 @@ static int pcan_usb_pro_init(struct peak_usb_device *dev) pcan_usb_pro_set_led(dev, 0, 1); return 0; + + err_out: + kfree(bi); + kfree(fi); + kfree(usb_if); + + return err; } static void pcan_usb_pro_exit(struct peak_usb_device *dev) diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_pro.h b/drivers/net/can/usb/peak_usb/pcan_usb_pro.h index a869918..32275af 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_pro.h +++ b/drivers/net/can/usb/peak_usb/pcan_usb_pro.h @@ -29,6 +29,7 @@ /* Vendor Request value for XXX_FCT */ #define PCAN_USBPRO_FCT_DRVLD 5 /* tell device driver is loaded */ +#define PCAN_USBPRO_FCT_DRVLD_REQ_LEN 16 /* PCAN_USBPRO_INFO_BL vendor request record type */ struct __packed pcan_usb_pro_blinfo { -- cgit v0.10.2 From 7abb690a0e095717420ba78dcab4309abbbec78a Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 24 May 2013 21:29:32 +0200 Subject: drm/i915: Fix spurious -EIO/SIGBUS on wedged gpus Chris Wilson noticed that since commit 1f83fee08d625f8d0130f9fe5ef7b17c2e022f3c [v3.9] Author: Daniel Vetter Date: Thu Nov 15 17:17:22 2012 +0100 drm/i915: clear up wedged transitions X can again get -EIO when it does not expect it. And even worse score a SIGBUS when accessing gtt mmaps. The established ABI is that we _only_ return an -EIO from execbuf - all other ioctls should just work. And since the reset code moves all bos out of gpu domains and clears out all the last_seqno/ring tracking there really shouldn't be any reason for non-execbuf code to ever touch the hw and see an -EIO. After some extensive discussions we've noticed that these spurios -EIO are caused by i915_gem_wait_for_error: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg20540.html That is easy to fix by returning 0 instead of -EIO, since grabbing the dev->struct_mutex does not yet mean that we actually want to touch the hw. And so there is no reason at all to fail with -EIO. But that's not the entire since, since often (at least it's easily googleable) dmesg indicates that the reset fails and we declare the gpu wedged. Then, quite a bit later X wakes up with the "Timed out waiting for the gpu reset to complete" DRM_ERROR message in wait_for_errror and brings down the desktop with an -EIO/SIGBUS. So clearly we're missing a wakeup somewhere, since the gpu reset just doesn't take 10 seconds to complete. And indeed we're do handle the terminally wedged state wrong. Fix this all up. References: https://bugs.freedesktop.org/show_bug.cgi?id=63921 References: https://bugs.freedesktop.org/show_bug.cgi?id=64073 Cc: Chris Wilson Cc: Daniel Vetter Cc: Damien Lespiau Cc: stable@vger.kernel.org Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index a6cf8e8..970ad17 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -91,14 +91,11 @@ i915_gem_wait_for_error(struct i915_gpu_error *error) { int ret; -#define EXIT_COND (!i915_reset_in_progress(error)) +#define EXIT_COND (!i915_reset_in_progress(error) || \ + i915_terminally_wedged(error)) if (EXIT_COND) return 0; - /* GPU is already declared terminally dead, give up. */ - if (i915_terminally_wedged(error)) - return -EIO; - /* * Only wait 10 seconds for the gpu reset to complete to avoid hanging * userspace. If it takes that long something really bad is going on and -- cgit v0.10.2 From d62cf62ad07d5584da1f2132641928ded8216327 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 29 May 2013 10:41:29 +0200 Subject: drm/i915: Quirk the pipe A quirk in the modeset state checker If we always force the pipe A to on we can't use the hw state to decide whether it should be on. Hence quirk the quirk. The problem is that crtc->active tracks the state of the entire display pipe, i.e. including planes, encoders and all. But our hw state readout simply looks at the pipe. But with the pipe A quirk we force-enable that (together with it's pll). To fix that mismatch we have two options: - Quirk the checked state to match what our sw tracking states if the pipe A quirk is in effect. - Improve the hw state readout to not get fooled by the pipe A quirk. Since we already have similar state clamping in e.g. assert_pipe I've opted for the first variant. Also note that we don't really loose any state checking: Individual pieces of the abstract crtc pipe are checked in the enable/disable functions with the various asssert_* checks we have, and the hw state check code doesn't check anything if the pipe is off anyway. v2: Pimp commit message after discussion with Chris and only apply the quirk for the quirk if we're checking pipe A. Otherwise we'll miss state checking for pipe B on i830M ... v3: Make the code comment consistent with the improved commit message, too (Chris). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=64764 Cc: stable@vger.kernel.org Cc: Chris Wilson Reported-and-Tested-by: mlsemon35@gmail.com (v1) Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index ad1117b..56746dc 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -7937,6 +7937,11 @@ intel_modeset_check_state(struct drm_device *dev) memset(&pipe_config, 0, sizeof(pipe_config)); active = dev_priv->display.get_pipe_config(crtc, &pipe_config); + + /* hw state is inconsistent with the pipe A quirk */ + if (crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) + active = crtc->active; + WARN(crtc->active != active, "crtc active state doesn't match with hw state " "(expected %i, found %i)\n", crtc->active, active); -- cgit v0.10.2 From 45a211d75137b1ac869a8a758a6667f15827a115 Mon Sep 17 00:00:00 2001 From: Ben Mesman Date: Tue, 16 Apr 2013 20:00:28 +0200 Subject: drm/i915: no lvds quirk for hp t5740 Last year, a patch was made for the "HP t5740e Thin Client" (see http://lists.freedesktop.org/archives/dri-devel/2012-May/023245.html). This device reports an lvds panel, but does not really have one. The predecessor of this device is the "hp t5740", which also does not have an lvds panel. This patch will add the same quirk for this device. Signed-off-by: Ben Mesman Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index f36f1ba..29412cc 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -815,10 +815,10 @@ static const struct dmi_system_id intel_no_lvds[] = { }, { .callback = intel_no_lvds_dmi_callback, - .ident = "Hewlett-Packard HP t5740e Thin Client", + .ident = "Hewlett-Packard HP t5740", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP t5740e Thin Client"), + DMI_MATCH(DMI_PRODUCT_NAME, " t5740"), }, }, { -- cgit v0.10.2 From 28420dad233520811c0e0860e7fb4975ed863fc4 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Mon, 3 Jun 2013 14:40:22 +0200 Subject: fuse: fix readdirplus Oops in fuse_dentry_revalidate Fix bug introduced by commit 4582a4ab2a "FUSE: Adapt readdirplus to application usage patterns". We need to check for a positive dentry; negative dentries are not added by readdirplus. Secondly we need to advise the use of readdirplus on the *parent*, otherwise the whole thing is useless. Thirdly all this is only relevant if "readdirplus_auto" mode is selected by the filesystem. We advise the use of readdirplus only if the dentry was still valid. If we had to redo the lookup then there was no use in doing the -plus version. Reported-by: Bernd Schubert Signed-off-by: Miklos Szeredi CC: Feng Shuo CC: stable@vger.kernel.org diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 254df56..f3f783d 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -180,6 +180,8 @@ u64 fuse_get_attr_version(struct fuse_conn *fc) static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) { struct inode *inode; + struct dentry *parent; + struct fuse_conn *fc; inode = ACCESS_ONCE(entry->d_inode); if (inode && is_bad_inode(inode)) @@ -187,10 +189,8 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) else if (fuse_dentry_time(entry) < get_jiffies_64()) { int err; struct fuse_entry_out outarg; - struct fuse_conn *fc; struct fuse_req *req; struct fuse_forget_link *forget; - struct dentry *parent; u64 attr_version; /* For negative dentries, always do a fresh lookup */ @@ -241,8 +241,14 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) entry_attr_timeout(&outarg), attr_version); fuse_change_entry_timeout(entry, &outarg); + } else if (inode) { + fc = get_fuse_conn(inode); + if (fc->readdirplus_auto) { + parent = dget_parent(entry); + fuse_advise_use_readdirplus(parent->d_inode); + dput(parent); + } } - fuse_advise_use_readdirplus(inode); return 1; } diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 6201f81..9a0cdde 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -867,10 +867,11 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) fc->dont_mask = 1; if (arg->flags & FUSE_AUTO_INVAL_DATA) fc->auto_inval_data = 1; - if (arg->flags & FUSE_DO_READDIRPLUS) + if (arg->flags & FUSE_DO_READDIRPLUS) { fc->do_readdirplus = 1; - if (arg->flags & FUSE_READDIRPLUS_AUTO) - fc->readdirplus_auto = 1; + if (arg->flags & FUSE_READDIRPLUS_AUTO) + fc->readdirplus_auto = 1; + } if (arg->flags & FUSE_ASYNC_DIO) fc->async_dio = 1; } else { -- cgit v0.10.2 From 00dddcaa51f997cdc6dbae3303a31024e29a0fc0 Mon Sep 17 00:00:00 2001 From: Lars Poeschel Date: Tue, 28 May 2013 10:24:57 +0200 Subject: ARM: dts: AM33xx: Fix properties on gpmc node The gpmc driver is actually looking for "gpmc,num-cs" and "gpmc,num-waitpins" properties in DT. The binding doc also states this. Correct the properties in the dts to provide the right values for the gpmc driver. Signed-off-by: Lars Poeschel Acked-by: Peter Korsgaard Acked-by: Pekon Gupta Signed-off-by: Benoit Cousson diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index 1460d9b..8e1248f 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -409,8 +409,8 @@ ti,hwmods = "gpmc"; reg = <0x50000000 0x2000>; interrupts = <100>; - num-cs = <7>; - num-waitpins = <2>; + gpmc,num-cs = <7>; + gpmc,num-waitpins = <2>; #address-cells = <2>; #size-cells = <1>; status = "disabled"; -- cgit v0.10.2 From 1e68f43b7dcf0e5eee10baeb3cbe4e1ca59db9fd Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Fri, 24 May 2013 17:24:21 -0700 Subject: ARM: dts: omap4-panda|sdp: Fix mux for twl6030 IRQ pin and msecure line Earlier commits ensured proper muxing of pins related to proper TWL6030 behavior: see commit 265a2bc8 (ARM: OMAP3: TWL4030: ensure sys_nirq1 is mux'd and wakeup enabled) and commit 1ef43369 (ARM: OMAP4: TWL: mux sys_drm_msecure as output for PMIC). However these only fixed legacy boot and not DT boot. For DT boot, the default mux values need to be set properly in DT. Special thanks to Nishanth Menon for the review and catching some major flaws in earlier versions. Tested on OMAP4430/Panda and OMAP4460/Panda-ES. Cc: Nishanth Menon Cc: Tony Lindgren Signed-off-by: Kevin Hilman Acked-by: Grygorii Strashko [benoit.cousson@linaro.org: Slightly change the subject to align board name with file name] Signed-off-by: Benoit Cousson diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi index 03bd60d..eeb734e 100644 --- a/arch/arm/boot/dts/omap4-panda-common.dtsi +++ b/arch/arm/boot/dts/omap4-panda-common.dtsi @@ -56,9 +56,23 @@ }; }; +&omap4_pmx_wkup { + pinctrl-names = "default"; + pinctrl-0 = < + &twl6030_wkup_pins + >; + + twl6030_wkup_pins: pinmux_twl6030_wkup_pins { + pinctrl-single,pins = < + 0x14 0x2 /* fref_clk0_out.sys_drm_msecure OUTPUT | MODE2 */ + >; + }; +}; + &omap4_pmx_core { pinctrl-names = "default"; pinctrl-0 = < + &twl6030_pins &twl6040_pins &mcpdm_pins &mcbsp1_pins @@ -66,6 +80,12 @@ &tpd12s015_pins >; + twl6030_pins: pinmux_twl6030_pins { + pinctrl-single,pins = < + 0x15e 0x4118 /* sys_nirq1.sys_nirq1 OMAP_WAKEUP_EN | INPUT_PULLUP | MODE0 */ + >; + }; + twl6040_pins: pinmux_twl6040_pins { pinctrl-single,pins = < 0xe0 0x3 /* hdq_sio.gpio_127 OUTPUT | MODE3 */ diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts index a35d9cd..98505a2 100644 --- a/arch/arm/boot/dts/omap4-sdp.dts +++ b/arch/arm/boot/dts/omap4-sdp.dts @@ -142,9 +142,23 @@ }; }; +&omap4_pmx_wkup { + pinctrl-names = "default"; + pinctrl-0 = < + &twl6030_wkup_pins + >; + + twl6030_wkup_pins: pinmux_twl6030_wkup_pins { + pinctrl-single,pins = < + 0x14 0x2 /* fref_clk0_out.sys_drm_msecure OUTPUT | MODE2 */ + >; + }; +}; + &omap4_pmx_core { pinctrl-names = "default"; pinctrl-0 = < + &twl6030_pins &twl6040_pins &mcpdm_pins &dmic_pins @@ -179,6 +193,12 @@ >; }; + twl6030_pins: pinmux_twl6030_pins { + pinctrl-single,pins = < + 0x15e 0x4118 /* sys_nirq1.sys_nirq1 OMAP_WAKEUP_EN | INPUT_PULLUP | MODE0 */ + >; + }; + twl6040_pins: pinmux_twl6040_pins { pinctrl-single,pins = < 0xe0 0x3 /* hdq_sio.gpio_127 OUTPUT | MODE3 */ -- cgit v0.10.2 From 8341613afbc8d65bca8c81158edfb49f36b7ad92 Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Wed, 17 Apr 2013 18:23:15 -0500 Subject: ARM: dts: OMAP5: Fix missing PWM capability to timer nodes OMAP5 has 6 timers (GPTimers 5, 6, 8 to 11) that are capable of PWM. The PWM capability property is missing from the node definitions of couple of timers. Add ti,timer-pwm attribute for timer 5, 6, 8 and 11. Signed-off-by: Suman Anna [benoit.cousson@linaro.org: Update changelog and subject to highlight the fix] Signed-off-by: Benoit Cousson diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index 3dd7ff8..635cae2 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -538,6 +538,7 @@ interrupts = <0 41 0x4>; ti,hwmods = "timer5"; ti,timer-dsp; + ti,timer-pwm; }; timer6: timer@4013a000 { @@ -574,6 +575,7 @@ reg = <0x4803e000 0x80>; interrupts = <0 45 0x4>; ti,hwmods = "timer9"; + ti,timer-pwm; }; timer10: timer@48086000 { @@ -581,6 +583,7 @@ reg = <0x48086000 0x80>; interrupts = <0 46 0x4>; ti,hwmods = "timer10"; + ti,timer-pwm; }; timer11: timer@48088000 { -- cgit v0.10.2 From c9ecf989cc7626e9edf8abef79f64b909542129b Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Thu, 30 May 2013 15:35:50 -0400 Subject: fuse: return -EIOCBQUEUED from fuse_direct_IO() for all async requests If request submission fails for an async request (i.e., get_user_pages() returns -ERESTARTSYS), we currently skip the -EIOCBQUEUED return and drop into wait_for_sync_kiocb() forever. Avoid this by always returning -EIOCBQUEUED for async requests. If an error occurs, the error is passed into fuse_aio_complete(), returned via aio_complete() and thus propagated to userspace via io_getevents(). Signed-off-by: Brian Foster Reviewed-by: Maxim Patlasov Signed-off-by: Miklos Szeredi diff --git a/fs/fuse/file.c b/fs/fuse/file.c index d9f4679..b3ad8d6 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2432,7 +2432,7 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, fuse_aio_complete(io, ret < 0 ? ret : 0, -1); /* we have a non-extending, async request, so return */ - if (ret > 0 && !is_sync_kiocb(iocb)) + if (!is_sync_kiocb(iocb)) return -EIOCBQUEUED; ret = wait_on_sync_kiocb(iocb); -- cgit v0.10.2 From e5c5f05dca0cf90f0f3bb1aea85dcf658baff185 Mon Sep 17 00:00:00 2001 From: Maxim Patlasov Date: Thu, 30 May 2013 16:41:34 +0400 Subject: fuse: fix alignment in short read optimization for async_dio The bug was introduced with async_dio feature: trying to optimize short reads, we cut number-of-bytes-to-read to i_size boundary. Hence the following example: truncate --size=300 /mnt/file dd if=/mnt/file of=/dev/null iflag=direct led to FUSE_READ request of 300 bytes size. This turned out to be problem for userspace fuse implementations who rely on assumption that kernel fuse does not change alignment of request from client FS. The patch turns off the optimization if async_dio is disabled. And, if it's enabled, the patch fixes adjustment of number-of-bytes-to-read to preserve alignment. Note, that we cannot throw out short read optimization entirely because otherwise a direct read of a huge size issued on a tiny file would generate a huge amount of fuse requests and most of them would be ACKed by userspace with zero bytes read. Signed-off-by: Maxim Patlasov Reviewed-by: Brian Foster Signed-off-by: Miklos Szeredi diff --git a/fs/fuse/file.c b/fs/fuse/file.c index b3ad8d6..e570081 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2373,6 +2373,11 @@ static void fuse_do_truncate(struct file *file) fuse_do_setattr(inode, &attr, file); } +static inline loff_t fuse_round_up(loff_t off) +{ + return round_up(off, FUSE_MAX_PAGES_PER_REQ << PAGE_SHIFT); +} + static ssize_t fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_t offset, unsigned long nr_segs) @@ -2380,6 +2385,7 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, ssize_t ret = 0; struct file *file = iocb->ki_filp; struct fuse_file *ff = file->private_data; + bool async_dio = ff->fc->async_dio; loff_t pos = 0; struct inode *inode; loff_t i_size; @@ -2391,10 +2397,10 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, i_size = i_size_read(inode); /* optimization for short read */ - if (rw != WRITE && offset + count > i_size) { + if (async_dio && rw != WRITE && offset + count > i_size) { if (offset >= i_size) return 0; - count = i_size - offset; + count = min_t(loff_t, count, fuse_round_up(i_size - offset)); } io = kmalloc(sizeof(struct fuse_io_priv), GFP_KERNEL); @@ -2412,7 +2418,7 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, * By default, we want to optimize all I/Os with async request * submission to the client filesystem if supported. */ - io->async = ff->fc->async_dio; + io->async = async_dio; io->iocb = iocb; /* @@ -2420,7 +2426,7 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, * to wait on real async I/O requests, so we must submit this request * synchronously. */ - if (!is_sync_kiocb(iocb) && (offset + count > i_size)) + if (!is_sync_kiocb(iocb) && (offset + count > i_size) && rw == WRITE) io->async = false; if (rw == WRITE) -- cgit v0.10.2 From e49f3959a96dc279860af7e86e6dbcfda50580a5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Adis=20Hamzi=C4=87?= Date: Sun, 2 Jun 2013 16:47:54 +0200 Subject: radeon: Fix system hang issue when using KMS with older cards MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The current radeon driver initialization routines, when using KMS, are written so that the IRQ installation routine is called before initializing the WB buffer and the CP rings. With some ASICs, though, the IRQ routine tries to access the GFX_INDEX ring causing a call to RREG32 with the value of -1 in radeon_fence_read. This, in turn causes the system to completely hang with some cards, requiring a hard reset. A call stack that can cause such a hang looks like this (using rv515 ASIC for the example here): * rv515_init (rv515.c) * radeon_irq_kms_init (radeon_irq_kms.c) * drm_irq_install (drm_irq.c) * radeon_driver_irq_preinstall_kms (radeon_irq_kms.c) * rs600_irq_process (rs600.c) * radeon_fence_process - due to SW interrupt (radeon_fence.c) * radeon_fence_read (radeon_fence.c) * hang due to RREG32(-1) The patch moves the IRQ installation to the card startup routine, after the ring has been initialized, but before the IRQ has been set. This fixes the issue, but requires a check to see if the IRQ is already installed, as is the case in the system resume codepath. I have tested the patch on three machines using the rv515, the rv770 and the evergreen ASIC. They worked without issues. This seems to be a known issue and has been reported on several bug tracking sites by various distributions (see links below). Most of reports recommend booting the system with KMS disabled and then enabling KMS by reloading the radeon module. For some reason, this was indeed a usable workaround, however, UMS is now deprecated and disabled by default. Bug reports: https://bugzilla.redhat.com/show_bug.cgi?id=845745 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/561789 https://bbs.archlinux.org/viewtopic.php?id=156964 Signed-off-by: Adis Hamzić Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 8546e3b..0f89ce3 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -4754,6 +4754,12 @@ static int evergreen_startup(struct radeon_device *rdev) rdev->ring[R600_RING_TYPE_UVD_INDEX].ring_size = 0; /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r = r600_irq_init(rdev); if (r) { DRM_ERROR("radeon: IH init failed (%d).\n", r); @@ -4923,10 +4929,6 @@ int evergreen_init(struct radeon_device *rdev) if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; - rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ring_obj = NULL; r600_ring_init(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX], 1024 * 1024); diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index 7969c0c..8458330 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -2025,6 +2025,12 @@ static int cayman_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r = r600_irq_init(rdev); if (r) { DRM_ERROR("radeon: IH init failed (%d).\n", r); @@ -2190,10 +2196,6 @@ int cayman_init(struct radeon_device *rdev) if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; - ring->ring_obj = NULL; r600_ring_init(rdev, ring, 1024 * 1024); diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 4973bff..d0314ec 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -3869,6 +3869,12 @@ static int r100_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r100_irq_set(rdev); rdev->config.r100.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -4024,9 +4030,6 @@ int r100_init(struct radeon_device *rdev) r = radeon_fence_driver_init(rdev); if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; /* Memory manager */ r = radeon_bo_init(rdev); if (r) diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c index c60350e..b9b776f 100644 --- a/drivers/gpu/drm/radeon/r300.c +++ b/drivers/gpu/drm/radeon/r300.c @@ -1382,6 +1382,12 @@ static int r300_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r100_irq_set(rdev); rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -1516,9 +1522,6 @@ int r300_init(struct radeon_device *rdev) r = radeon_fence_driver_init(rdev); if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; /* Memory manager */ r = radeon_bo_init(rdev); if (r) diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c index 6fce2eb..4e796ec 100644 --- a/drivers/gpu/drm/radeon/r420.c +++ b/drivers/gpu/drm/radeon/r420.c @@ -265,6 +265,12 @@ static int r420_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r100_irq_set(rdev); rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -411,10 +417,6 @@ int r420_init(struct radeon_device *rdev) if (r) { return r; } - r = radeon_irq_kms_init(rdev); - if (r) { - return r; - } /* Memory manager */ r = radeon_bo_init(rdev); if (r) { diff --git a/drivers/gpu/drm/radeon/r520.c b/drivers/gpu/drm/radeon/r520.c index f795a4e..e1aece7 100644 --- a/drivers/gpu/drm/radeon/r520.c +++ b/drivers/gpu/drm/radeon/r520.c @@ -194,6 +194,12 @@ static int r520_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + rs600_irq_set(rdev); rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -297,9 +303,6 @@ int r520_init(struct radeon_device *rdev) r = radeon_fence_driver_init(rdev); if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; /* Memory manager */ r = radeon_bo_init(rdev); if (r) diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index b45e648..0f30d0d 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3202,6 +3202,12 @@ static int r600_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r = r600_irq_init(rdev); if (r) { DRM_ERROR("radeon: IH init failed (%d).\n", r); @@ -3356,10 +3362,6 @@ int r600_init(struct radeon_device *rdev) if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; - rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ring_obj = NULL; r600_ring_init(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX], 1024 * 1024); diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c index 73051ce..233a9b9 100644 --- a/drivers/gpu/drm/radeon/rs400.c +++ b/drivers/gpu/drm/radeon/rs400.c @@ -417,6 +417,12 @@ static int rs400_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r100_irq_set(rdev); rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -535,9 +541,6 @@ int rs400_init(struct radeon_device *rdev) r = radeon_fence_driver_init(rdev); if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; /* Memory manager */ r = radeon_bo_init(rdev); if (r) diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index 46fa1b0..670b555 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -923,6 +923,12 @@ static int rs600_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + rs600_irq_set(rdev); rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -1047,9 +1053,6 @@ int rs600_init(struct radeon_device *rdev) r = radeon_fence_driver_init(rdev); if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; /* Memory manager */ r = radeon_bo_init(rdev); if (r) diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c index ab4c86c..55880d5 100644 --- a/drivers/gpu/drm/radeon/rs690.c +++ b/drivers/gpu/drm/radeon/rs690.c @@ -651,6 +651,12 @@ static int rs690_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + rs600_irq_set(rdev); rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -776,9 +782,6 @@ int rs690_init(struct radeon_device *rdev) r = radeon_fence_driver_init(rdev); if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; /* Memory manager */ r = radeon_bo_init(rdev); if (r) diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c index ffcba73..21c7d7b 100644 --- a/drivers/gpu/drm/radeon/rv515.c +++ b/drivers/gpu/drm/radeon/rv515.c @@ -532,6 +532,12 @@ static int rv515_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + rs600_irq_set(rdev); rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ @@ -662,9 +668,6 @@ int rv515_init(struct radeon_device *rdev) r = radeon_fence_driver_init(rdev); if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; /* Memory manager */ r = radeon_bo_init(rdev); if (r) diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index 08aef24..4a62ad2 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -1887,6 +1887,12 @@ static int rv770_startup(struct radeon_device *rdev) rdev->ring[R600_RING_TYPE_UVD_INDEX].ring_size = 0; /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r = r600_irq_init(rdev); if (r) { DRM_ERROR("radeon: IH init failed (%d).\n", r); @@ -2045,10 +2051,6 @@ int rv770_init(struct radeon_device *rdev) if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; - rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ring_obj = NULL; r600_ring_init(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX], 1024 * 1024); diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index d1ba9d8..a1b0da6 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -5350,6 +5350,12 @@ static int si_startup(struct radeon_device *rdev) } /* Enable IRQ */ + if (!rdev->irq.installed) { + r = radeon_irq_kms_init(rdev); + if (r) + return r; + } + r = si_irq_init(rdev); if (r) { DRM_ERROR("radeon: IH init failed (%d).\n", r); @@ -5533,10 +5539,6 @@ int si_init(struct radeon_device *rdev) if (r) return r; - r = radeon_irq_kms_init(rdev); - if (r) - return r; - ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX]; ring->ring_obj = NULL; r600_ring_init(rdev, ring, 1024 * 1024); -- cgit v0.10.2 From 65337e60a7616a610ef53b7a9f807eb80a827070 Mon Sep 17 00:00:00 2001 From: Samuel Li Date: Fri, 5 Apr 2013 17:50:53 -0400 Subject: drm/radeon: Use direct mapping for fast fb access on RS780/RS880 (v2) v2: fix trailing whitespace Signed-off-by: Samuel Li Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 0f30d0d..0e53416 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1046,6 +1046,24 @@ int r600_mc_wait_for_idle(struct radeon_device *rdev) return -1; } +uint32_t rs780_mc_rreg(struct radeon_device *rdev, uint32_t reg) +{ + uint32_t r; + + WREG32(R_0028F8_MC_INDEX, S_0028F8_MC_IND_ADDR(reg)); + r = RREG32(R_0028FC_MC_DATA); + WREG32(R_0028F8_MC_INDEX, ~C_0028F8_MC_IND_ADDR); + return r; +} + +void rs780_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v) +{ + WREG32(R_0028F8_MC_INDEX, S_0028F8_MC_IND_ADDR(reg) | + S_0028F8_MC_IND_WR_EN(1)); + WREG32(R_0028FC_MC_DATA, v); + WREG32(R_0028F8_MC_INDEX, 0x7F); +} + static void r600_mc_program(struct radeon_device *rdev) { struct rv515_mc_save save; @@ -1181,6 +1199,8 @@ static int r600_mc_init(struct radeon_device *rdev) { u32 tmp; int chansize, numchan; + uint32_t h_addr, l_addr; + unsigned long long k8_addr; /* Get VRAM informations */ rdev->mc.vram_is_ddr = true; @@ -1221,7 +1241,30 @@ static int r600_mc_init(struct radeon_device *rdev) if (rdev->flags & RADEON_IS_IGP) { rs690_pm_info(rdev); rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev); + + if (rdev->family == CHIP_RS780 || rdev->family == CHIP_RS880) { + /* Use K8 direct mapping for fast fb access. */ + rdev->fastfb_working = false; + h_addr = G_000012_K8_ADDR_EXT(RREG32_MC(R_000012_MC_MISC_UMA_CNTL)); + l_addr = RREG32_MC(R_000011_K8_FB_LOCATION); + k8_addr = ((unsigned long long)h_addr) << 32 | l_addr; +#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE) + if (k8_addr + rdev->mc.visible_vram_size < 0x100000000ULL) +#endif + { + /* FastFB shall be used with UMA memory. Here it is simply disabled when sideport + * memory is present. + */ + if (rdev->mc.igp_sideport_enabled == false && radeon_fastfb == 1) { + DRM_INFO("Direct mapping: aper base at 0x%llx, replaced by direct mapping base 0x%llx.\n", + (unsigned long long)rdev->mc.aper_base, k8_addr); + rdev->mc.aper_base = (resource_size_t)k8_addr; + rdev->fastfb_working = true; + } + } + } } + radeon_update_bandwidth_info(rdev); return 0; } diff --git a/drivers/gpu/drm/radeon/r600d.h b/drivers/gpu/drm/radeon/r600d.h index acb146c..79df558 100644 --- a/drivers/gpu/drm/radeon/r600d.h +++ b/drivers/gpu/drm/radeon/r600d.h @@ -1342,6 +1342,14 @@ #define PACKET3_STRMOUT_BASE_UPDATE 0x72 /* r7xx */ #define PACKET3_SURFACE_BASE_UPDATE 0x73 +#define R_000011_K8_FB_LOCATION 0x11 +#define R_000012_MC_MISC_UMA_CNTL 0x12 +#define G_000012_K8_ADDR_EXT(x) (((x) >> 0) & 0xFF) +#define R_0028F8_MC_INDEX 0x28F8 +#define S_0028F8_MC_IND_ADDR(x) (((x) & 0x1FF) << 0) +#define C_0028F8_MC_IND_ADDR 0xFFFFFE00 +#define S_0028F8_MC_IND_WR_EN(x) (((x) & 0x1) << 9) +#define R_0028FC_MC_DATA 0x28FC #define R_008020_GRBM_SOFT_RESET 0x8020 #define S_008020_SOFT_RESET_CP(x) (((x) & 1) << 0) diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c index 06b8c19..a2802b47 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.c +++ b/drivers/gpu/drm/radeon/radeon_asic.c @@ -122,6 +122,10 @@ static void radeon_register_accessor_init(struct radeon_device *rdev) rdev->mc_rreg = &rs600_mc_rreg; rdev->mc_wreg = &rs600_mc_wreg; } + if (rdev->family == CHIP_RS780 || rdev->family == CHIP_RS880) { + rdev->mc_rreg = &rs780_mc_rreg; + rdev->mc_wreg = &rs780_mc_wreg; + } if (rdev->family >= CHIP_R600) { rdev->pciep_rreg = &r600_pciep_rreg; rdev->pciep_wreg = &r600_pciep_wreg; diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h index 2c87365..a72759e 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -347,6 +347,8 @@ extern bool r600_gui_idle(struct radeon_device *rdev); extern void r600_pm_misc(struct radeon_device *rdev); extern void r600_pm_init_profile(struct radeon_device *rdev); extern void rs780_pm_init_profile(struct radeon_device *rdev); +extern uint32_t rs780_mc_rreg(struct radeon_device *rdev, uint32_t reg); +extern void rs780_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v); extern void r600_pm_get_dynpm_state(struct radeon_device *rdev); extern void r600_set_pcie_lanes(struct radeon_device *rdev, int lanes); extern int r600_get_pcie_lanes(struct radeon_device *rdev); -- cgit v0.10.2 From 1cbcca302a318499f20a512847c5d6a510c08c35 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 3 Jun 2013 10:32:40 -0400 Subject: drm/radeon: don't allow audio on DCE6 It's not supported yet. Fixes display issues when users force it on. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c index 44a7da6..8406c82 100644 --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -667,6 +667,8 @@ atombios_digital_setup(struct drm_encoder *encoder, int action) int atombios_get_encoder_mode(struct drm_encoder *encoder) { + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); struct drm_connector *connector; struct radeon_connector *radeon_connector; @@ -693,7 +695,8 @@ atombios_get_encoder_mode(struct drm_encoder *encoder) case DRM_MODE_CONNECTOR_DVII: case DRM_MODE_CONNECTOR_HDMIB: /* HDMI-B is basically DL-DVI; analog works fine */ if (drm_detect_hdmi_monitor(radeon_connector->edid) && - radeon_audio) + radeon_audio && + !ASIC_IS_DCE6(rdev)) /* remove once we support DCE6 */ return ATOM_ENCODER_MODE_HDMI; else if (radeon_connector->use_digital) return ATOM_ENCODER_MODE_DVI; @@ -704,7 +707,8 @@ atombios_get_encoder_mode(struct drm_encoder *encoder) case DRM_MODE_CONNECTOR_HDMIA: default: if (drm_detect_hdmi_monitor(radeon_connector->edid) && - radeon_audio) + radeon_audio && + !ASIC_IS_DCE6(rdev)) /* remove once we support DCE6 */ return ATOM_ENCODER_MODE_HDMI; else return ATOM_ENCODER_MODE_DVI; @@ -718,7 +722,8 @@ atombios_get_encoder_mode(struct drm_encoder *encoder) (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP)) return ATOM_ENCODER_MODE_DP; else if (drm_detect_hdmi_monitor(radeon_connector->edid) && - radeon_audio) + radeon_audio && + !ASIC_IS_DCE6(rdev)) /* remove once we support DCE6 */ return ATOM_ENCODER_MODE_HDMI; else return ATOM_ENCODER_MODE_DVI; -- cgit v0.10.2 From b5f83e9b069f4bf19214ca6130947806a2b853fa Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Tue, 28 May 2013 17:00:57 +0200 Subject: ARM: mxs: icoll: Fix interrupts gpio bank 0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The mxs interrupt controller does not support polling for interrupts, but the driver still does it, which is a relict from pre-MULTI_IRQ_HANDLER times. The existing code assumes that 0x7f means no interrupt, but this value is an actually valid irq number, namely gpio bank 0's irq. This results in the driver not detecting when irq 0x7f is active which makes the machine effectively dead lock. This patch removes the interrupt poll loop and allows usage of gpio0 interrupt without an infinite loop. Signed-off-by: Uwe Kleine-König Signed-off-by: Markus Pargmann Cc: stable@vger.kernel.org Signed-off-by: Shawn Guo diff --git a/drivers/irqchip/irq-mxs.c b/drivers/irqchip/irq-mxs.c index 29889bb..63b3d4e 100644 --- a/drivers/irqchip/irq-mxs.c +++ b/drivers/irqchip/irq-mxs.c @@ -76,16 +76,10 @@ asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs) { u32 irqnr; - do { - irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET); - if (irqnr != 0x7f) { - __raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR); - irqnr = irq_find_mapping(icoll_domain, irqnr); - handle_IRQ(irqnr, regs); - continue; - } - break; - } while (1); + irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET); + __raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR); + irqnr = irq_find_mapping(icoll_domain, irqnr); + handle_IRQ(irqnr, regs); } static int icoll_irq_domain_map(struct irq_domain *d, unsigned int virq, -- cgit v0.10.2 From 4a586812055dbd2588b0836ab758f6b9670c3949 Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Fri, 24 May 2013 15:02:49 -0400 Subject: GFS2: Set log descriptor type for jdata blocks This patch sets the log descriptor type according to whether the journal commit is for (journaled) data or metadata. This was recently broken when the functions to process data and metadata log ops were combined. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 68b4c8f..6c33d7b 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -419,7 +419,9 @@ static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, if (total > limit) num = limit; gfs2_log_unlock(sdp); - page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA, num + 1, num); + page = gfs2_get_log_desc(sdp, + is_databuf ? GFS2_LOG_DESC_JDATA : + GFS2_LOG_DESC_METADATA, num + 1, num); ld = page_address(page); gfs2_log_lock(sdp); ptr = (__be64 *)(ld + 1); -- cgit v0.10.2 From 2b3dcf35810ff02ad0e785527a25c1b13bf82b19 Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Tue, 28 May 2013 10:04:44 -0400 Subject: GFS2: Increase i_writecount during gfs2_setattr_size This patch calls get_write_access in a few functions. This merely increases inode->i_writecount for the duration of the function. That will ensure that any file closes won't delete the inode's multi-block reservation while the function is running. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 1dc9a13..93b5809 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1286,17 +1286,26 @@ int gfs2_setattr_size(struct inode *inode, u64 newsize) if (ret) return ret; + ret = get_write_access(inode); + if (ret) + return ret; + inode_dio_wait(inode); ret = gfs2_rs_alloc(GFS2_I(inode)); if (ret) - return ret; + goto out; oldsize = inode->i_size; - if (newsize >= oldsize) - return do_grow(inode, newsize); + if (newsize >= oldsize) { + ret = do_grow(inode, newsize); + goto out; + } - return do_shrink(inode, oldsize, newsize); + ret = do_shrink(inode, oldsize, newsize); +out: + put_write_access(inode); + return ret; } int gfs2_truncatei_resume(struct gfs2_inode *ip) diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index acd1676..ad0dc38 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -402,16 +402,20 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) /* Update file times before taking page lock */ file_update_time(vma->vm_file); + ret = get_write_access(inode); + if (ret) + goto out; + ret = gfs2_rs_alloc(ip); if (ret) - return ret; + goto out_write_access; gfs2_size_hint(vma->vm_file, pos, PAGE_CACHE_SIZE); gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); ret = gfs2_glock_nq(&gh); if (ret) - goto out; + goto out_uninit; set_bit(GLF_DIRTY, &ip->i_gl->gl_flags); set_bit(GIF_SW_PAGED, &ip->i_flags); @@ -480,12 +484,15 @@ out_quota_unlock: gfs2_quota_unlock(ip); out_unlock: gfs2_glock_dq(&gh); -out: +out_uninit: gfs2_holder_uninit(&gh); if (ret == 0) { set_page_dirty(page); wait_for_stable_page(page); } +out_write_access: + put_write_access(inode); +out: sb_end_pagefault(inode->i_sb); return block_page_mkwrite_return(ret); } @@ -594,10 +601,10 @@ static int gfs2_release(struct inode *inode, struct file *file) kfree(file->private_data); file->private_data = NULL; - if ((file->f_mode & FMODE_WRITE) && - (atomic_read(&inode->i_writecount) == 1)) - gfs2_rs_delete(ip); + if (!(file->f_mode & FMODE_WRITE)) + return 0; + gfs2_rs_delete(ip); return 0; } diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 5232525..9809156 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -638,8 +638,10 @@ void gfs2_rs_deltree(struct gfs2_blkreserv *rs) */ void gfs2_rs_delete(struct gfs2_inode *ip) { + struct inode *inode = &ip->i_inode; + down_write(&ip->i_rw_mutex); - if (ip->i_res) { + if (ip->i_res && atomic_read(&inode->i_writecount) <= 1) { gfs2_rs_deltree(ip->i_res); BUG_ON(ip->i_res->rs_free); kmem_cache_free(gfs2_rsrv_cachep, ip->i_res); -- cgit v0.10.2 From e8830d8856e3ad61067dd46c05438b0d75a0441a Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Thu, 30 May 2013 09:48:56 -0400 Subject: GFS2: Fall back to vmalloc if kmalloc fails for dir hash tables This version has one more correction: the vmalloc calls are replaced by __vmalloc calls to preserve the GFP_NOFS flag. When GFS2's directory management code allocates buffers for a directory hash table, if it can't get the memory it needs, it currently gives a bad return code. Rather than giving an error, this patch allows it to use virtual memory rather than kernel memory for the hash table. This should make it possible for directories to function properly, even when kernel memory becomes very fragmented. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index c3e82bd..b631c90 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -354,22 +354,31 @@ static __be64 *gfs2_dir_get_hash_table(struct gfs2_inode *ip) return ERR_PTR(-EIO); } - hc = kmalloc(hsize, GFP_NOFS); - ret = -ENOMEM; + hc = kmalloc(hsize, GFP_NOFS | __GFP_NOWARN); + if (hc == NULL) + hc = __vmalloc(hsize, GFP_NOFS, PAGE_KERNEL); + if (hc == NULL) return ERR_PTR(-ENOMEM); ret = gfs2_dir_read_data(ip, hc, hsize); if (ret < 0) { - kfree(hc); + if (is_vmalloc_addr(hc)) + vfree(hc); + else + kfree(hc); return ERR_PTR(ret); } spin_lock(&inode->i_lock); - if (ip->i_hash_cache) - kfree(hc); - else + if (ip->i_hash_cache) { + if (is_vmalloc_addr(hc)) + vfree(hc); + else + kfree(hc); + } else { ip->i_hash_cache = hc; + } spin_unlock(&inode->i_lock); return ip->i_hash_cache; @@ -385,7 +394,10 @@ void gfs2_dir_hash_inval(struct gfs2_inode *ip) { __be64 *hc = ip->i_hash_cache; ip->i_hash_cache = NULL; - kfree(hc); + if (is_vmalloc_addr(hc)) + vfree(hc); + else + kfree(hc); } static inline int gfs2_dirent_sentinel(const struct gfs2_dirent *dent) @@ -1113,7 +1125,10 @@ static int dir_double_exhash(struct gfs2_inode *dip) if (IS_ERR(hc)) return PTR_ERR(hc); - h = hc2 = kmalloc(hsize_bytes * 2, GFP_NOFS); + h = hc2 = kmalloc(hsize_bytes * 2, GFP_NOFS | __GFP_NOWARN); + if (hc2 == NULL) + hc2 = __vmalloc(hsize_bytes * 2, GFP_NOFS, PAGE_KERNEL); + if (!hc2) return -ENOMEM; @@ -1145,7 +1160,10 @@ fail: gfs2_dinode_out(dip, dibh->b_data); brelse(dibh); out_kfree: - kfree(hc2); + if (is_vmalloc_addr(hc2)) + vfree(hc2); + else + kfree(hc2); return error; } @@ -1846,6 +1864,8 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, memset(&rlist, 0, sizeof(struct gfs2_rgrp_list)); ht = kzalloc(size, GFP_NOFS); + if (ht == NULL) + ht = vzalloc(size); if (!ht) return -ENOMEM; @@ -1933,7 +1953,10 @@ out_rlist: gfs2_rlist_free(&rlist); gfs2_quota_unhold(dip); out: - kfree(ht); + if (is_vmalloc_addr(ht)) + vfree(ht); + else + kfree(ht); return error; } -- cgit v0.10.2 From a6a4d98b0124b5d3befe8b3a99f51f1b4fcc6dcf Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Wed, 29 May 2013 11:51:52 -0400 Subject: GFS2: Don't cache iopen glocks This patch makes GFS2 immediately reclaim/delete all iopen glocks as soon as they're dequeued. This allows deleters to get an EXclusive lock on iopen so files are deleted properly instead of being set as unlinked. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 8833a4f..62b484e 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -189,6 +189,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, return inode; fail_refresh: + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; ip->i_iopen_gh.gh_gl->gl_object = NULL; gfs2_glock_dq_uninit(&ip->i_iopen_gh); fail_iopen: diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 917c8e1..e5639de 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1444,6 +1444,7 @@ static void gfs2_evict_inode(struct inode *inode) /* Must not read inode block until block type has been verified */ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); if (unlikely(error)) { + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_uninit(&ip->i_iopen_gh); goto out; } @@ -1514,8 +1515,10 @@ out_unlock: if (gfs2_rs_active(ip->i_res)) gfs2_rs_deltree(ip->i_res); - if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) + if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq(&ip->i_iopen_gh); + } gfs2_holder_uninit(&ip->i_iopen_gh); gfs2_glock_dq_uninit(&gh); if (error && error != GLR_TRYFAILED && error != -EROFS) @@ -1534,6 +1537,7 @@ out: ip->i_gl = NULL; if (ip->i_iopen_gh.gh_gl) { ip->i_iopen_gh.gh_gl->gl_object = NULL; + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_uninit(&ip->i_iopen_gh); } } -- cgit v0.10.2 From bff09b099b31a31573b3c5943f805f6a08c714f0 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Thu, 30 May 2013 15:47:04 +0200 Subject: serial/imx: disable hardware flow control at startup We only want to enable hardware flow control if RTS/CTS pins are connected. Signed-off-by: Lucas Stach Signed-off-by: Markus Pargmann Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 147c9e1..8cdfbd3 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -761,6 +761,8 @@ static int imx_startup(struct uart_port *port) temp = readl(sport->port.membase + UCR2); temp |= (UCR2_RXEN | UCR2_TXEN); + if (!sport->have_rtscts) + temp |= UCR2_IRTS; writel(temp, sport->port.membase + UCR2); if (USE_IRDA(sport)) { -- cgit v0.10.2 From 60e93575476f90a72146b51283f514da655410a7 Mon Sep 17 00:00:00 2001 From: Chander Kashyap Date: Tue, 28 May 2013 18:32:07 +0530 Subject: serial: samsung: enable clock before clearing pending interrupts during init Ensure that the uart controller clock is enabled prior to writing to the interrupt mask and pending registers in the s3c24xx_serial_init_port function. Signed-off-by: Chander Kashyap Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 8942941..0c8a9fa 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1166,6 +1166,18 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport, ourport->tx_irq = ret; ourport->clk = clk_get(&platdev->dev, "uart"); + if (IS_ERR(ourport->clk)) { + pr_err("%s: Controller clock not found\n", + dev_name(&platdev->dev)); + return PTR_ERR(ourport->clk); + } + + ret = clk_prepare_enable(ourport->clk); + if (ret) { + pr_err("uart: clock failed to prepare+enable: %d\n", ret); + clk_put(ourport->clk); + return ret; + } /* Keep all interrupts masked and cleared */ if (s3c24xx_serial_has_interrupt_mask(port)) { @@ -1180,6 +1192,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport, /* reset the fifos (and setup the uart) */ s3c24xx_serial_resetport(port, cfg); + clk_disable_unprepare(ourport->clk); return 0; } -- cgit v0.10.2 From 317a68427d4b0a302ecff252fd83a00557947db8 Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Mon, 3 Jun 2013 09:38:26 -0400 Subject: Revert "serial: 8250: Make SERIAL_8250_RUNTIME_UARTS work correctly" This reverts commit cfcec52e9781f08948c6eb98198d65c45be75a70. This regresses a longstanding behaviour on X86 systems, which end up with PCI serial ports moving between ttyS4 and ttyS0 when you bisect to opposite sides of this commit, resulting in the need to constantly modify the console setting in order to bisect across it. Please revert, we can work on solving this for ARM platforms in a less disruptive way. Signed-off-by: Kyle McMartin Cc: Karthik Manamcheri Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 46528d5..86c00b1 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -2755,7 +2755,7 @@ static void __init serial8250_isa_init_ports(void) if (nr_uarts > UART_NR) nr_uarts = UART_NR; - for (i = 0; i < UART_NR; i++) { + for (i = 0; i < nr_uarts; i++) { struct uart_8250_port *up = &serial8250_ports[i]; struct uart_port *port = &up->port; @@ -2916,7 +2916,7 @@ static int __init serial8250_console_setup(struct console *co, char *options) * if so, search for the first available port that does have * console support. */ - if (co->index >= UART_NR) + if (co->index >= nr_uarts) co->index = 0; port = &serial8250_ports[co->index].port; if (!port->iobase && !port->membase) @@ -2957,7 +2957,7 @@ int serial8250_find_port(struct uart_port *p) int line; struct uart_port *port; - for (line = 0; line < UART_NR; line++) { + for (line = 0; line < nr_uarts; line++) { port = &serial8250_ports[line].port; if (uart_match_port(p, port)) return line; @@ -3110,7 +3110,7 @@ static int serial8250_remove(struct platform_device *dev) { int i; - for (i = 0; i < UART_NR; i++) { + for (i = 0; i < nr_uarts; i++) { struct uart_8250_port *up = &serial8250_ports[i]; if (up->port.dev == &dev->dev) @@ -3178,7 +3178,7 @@ static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port * /* * First, find a port entry which matches. */ - for (i = 0; i < UART_NR; i++) + for (i = 0; i < nr_uarts; i++) if (uart_match_port(&serial8250_ports[i].port, port)) return &serial8250_ports[i]; @@ -3187,7 +3187,7 @@ static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port * * free entry. We look for one which hasn't been previously * used (indicated by zero iobase). */ - for (i = 0; i < UART_NR; i++) + for (i = 0; i < nr_uarts; i++) if (serial8250_ports[i].port.type == PORT_UNKNOWN && serial8250_ports[i].port.iobase == 0) return &serial8250_ports[i]; @@ -3196,7 +3196,7 @@ static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port * * That also failed. Last resort is to find any entry which * doesn't have a real port associated with it. */ - for (i = 0; i < UART_NR; i++) + for (i = 0; i < nr_uarts; i++) if (serial8250_ports[i].port.type == PORT_UNKNOWN) return &serial8250_ports[i]; -- cgit v0.10.2 From 6529591e3eef65f0f528a81ac169f6e294b947a7 Mon Sep 17 00:00:00 2001 From: Robert Butora Date: Fri, 31 May 2013 18:09:51 +0300 Subject: USB: Serial: cypress_M8: Enable FRWD Dongle hidcom device The patch adds a new HIDCOM device and does not affect other devices driven by the cypress_M8 module. Changes are: - add VendorID ProductID to device tables - skip unstable speed check because FRWD uses 115200bps - skip reset at probe which is an issue workaround for this particular device. Signed-off-by: Robert Butora Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index d341555..0821201 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -65,6 +65,7 @@ static const struct usb_device_id id_table_earthmate[] = { static const struct usb_device_id id_table_cyphidcomrs232[] = { { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, + { USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) }, { } /* Terminating entry */ }; @@ -78,6 +79,7 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) }, { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, + { USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) }, { USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) }, { } /* Terminating entry */ }; @@ -229,6 +231,12 @@ static struct usb_serial_driver * const serial_drivers[] = { * Cypress serial helper functions *****************************************************************************/ +/* FRWD Dongle hidcom needs to skip reset and speed checks */ +static inline bool is_frwd(struct usb_device *dev) +{ + return ((le16_to_cpu(dev->descriptor.idVendor) == VENDOR_ID_FRWD) && + (le16_to_cpu(dev->descriptor.idProduct) == PRODUCT_ID_CYPHIDCOM_FRWD)); +} static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) { @@ -238,6 +246,10 @@ static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) if (unstable_bauds) return new_rate; + /* FRWD Dongle uses 115200 bps */ + if (is_frwd(port->serial->dev)) + return new_rate; + /* * The general purpose firmware for the Cypress M8 allows for * a maximum speed of 57600bps (I have no idea whether DeLorme @@ -448,7 +460,11 @@ static int cypress_generic_port_probe(struct usb_serial_port *port) return -ENOMEM; } - usb_reset_configuration(serial->dev); + /* Skip reset for FRWD device. It is a workaound: + device hangs if it receives SET_CONFIGURE in Configured + state. */ + if (!is_frwd(serial->dev)) + usb_reset_configuration(serial->dev); priv->cmd_ctrl = 0; priv->line_control = 0; diff --git a/drivers/usb/serial/cypress_m8.h b/drivers/usb/serial/cypress_m8.h index 67cf608..b461311 100644 --- a/drivers/usb/serial/cypress_m8.h +++ b/drivers/usb/serial/cypress_m8.h @@ -24,6 +24,10 @@ #define VENDOR_ID_CYPRESS 0x04b4 #define PRODUCT_ID_CYPHIDCOM 0x5500 +/* FRWD Dongle - a GPS sports watch */ +#define VENDOR_ID_FRWD 0x6737 +#define PRODUCT_ID_CYPHIDCOM_FRWD 0x0001 + /* Powercom UPS, chip CY7C63723 */ #define VENDOR_ID_POWERCOM 0x0d9f #define PRODUCT_ID_UPS 0x0002 -- cgit v0.10.2 From 8a2f132a01c2dd4c3905fa560f92019761ed72b1 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Fri, 24 May 2013 12:01:51 +0200 Subject: USB: serial: Add Option GTM681W to qcserial device table. The Option GTM681W uses a qualcomm chip and can be served by the qcserial device driver. Signed-off-by: Richard Weinberger Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 59b32b7..bd794b4 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -118,6 +118,7 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */ {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */ {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */ + {USB_DEVICE(0x0AF0, 0x8120)}, /* Option GTM681W */ /* non Gobi Qualcomm serial devices */ {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 0)}, /* Sierra Wireless MC7700 Device Management */ -- cgit v0.10.2 From e9d98ddc0a4e4e11603c818bf234644031bff384 Mon Sep 17 00:00:00 2001 From: Arun Kumar K Date: Wed, 24 Apr 2013 09:41:53 -0300 Subject: [media] s5p-mfc: Update v6 encoder buffer alloc MFC v6 needs minimum number of output buffers to be queued for encoder depending on the stream type and profile. The patch modifies the driver so that encoding cannot be started with lesser number of OUTPUT buffers than required. This also fixes the crash happeninig during multi instance encoder-decoder simultaneous run due to memory allocation happening from interrupt context. Signed-off-by: Arun Kumar K Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c index 01f9ae0..3b2345e 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c @@ -397,7 +397,7 @@ static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx, leave_handle_frame: spin_unlock_irqrestore(&dev->irqlock, flags); if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING) - || ctx->dst_queue_cnt < ctx->dpb_count) + || ctx->dst_queue_cnt < ctx->pb_count) clear_work_bit(ctx); s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); wake_up_ctx(ctx, reason, err); @@ -473,7 +473,7 @@ static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx, s5p_mfc_hw_call(dev->mfc_ops, dec_calc_dpb_size, ctx); - ctx->dpb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count, + ctx->pb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count, dev); ctx->mv_count = s5p_mfc_hw_call(dev->mfc_ops, get_mv_count, dev); diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_common.h b/drivers/media/platform/s5p-mfc/s5p_mfc_common.h index 202d1d7..975d1b2 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_common.h +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_common.h @@ -138,6 +138,7 @@ enum s5p_mfc_inst_state { MFCINST_INIT = 100, MFCINST_GOT_INST, MFCINST_HEAD_PARSED, + MFCINST_HEAD_PRODUCED, MFCINST_BUFS_SET, MFCINST_RUNNING, MFCINST_FINISHING, @@ -602,7 +603,7 @@ struct s5p_mfc_ctx { int after_packed_pb; int sei_fp_parse; - int dpb_count; + int pb_count; int total_dpb_count; int mv_count; /* Buffers */ diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c index 4af53bd..00b0703 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c @@ -210,11 +210,11 @@ static int s5p_mfc_ctx_ready(struct s5p_mfc_ctx *ctx) /* Context is to decode a frame */ if (ctx->src_queue_cnt >= 1 && ctx->state == MFCINST_RUNNING && - ctx->dst_queue_cnt >= ctx->dpb_count) + ctx->dst_queue_cnt >= ctx->pb_count) return 1; /* Context is to return last frame */ if (ctx->state == MFCINST_FINISHING && - ctx->dst_queue_cnt >= ctx->dpb_count) + ctx->dst_queue_cnt >= ctx->pb_count) return 1; /* Context is to set buffers */ if (ctx->src_queue_cnt >= 1 && @@ -224,7 +224,7 @@ static int s5p_mfc_ctx_ready(struct s5p_mfc_ctx *ctx) /* Resolution change */ if ((ctx->state == MFCINST_RES_CHANGE_INIT || ctx->state == MFCINST_RES_CHANGE_FLUSH) && - ctx->dst_queue_cnt >= ctx->dpb_count) + ctx->dst_queue_cnt >= ctx->pb_count) return 1; if (ctx->state == MFCINST_RES_CHANGE_END && ctx->src_queue_cnt >= 1) @@ -537,7 +537,7 @@ static int vidioc_reqbufs(struct file *file, void *priv, mfc_err("vb2_reqbufs on capture failed\n"); return ret; } - if (reqbufs->count < ctx->dpb_count) { + if (reqbufs->count < ctx->pb_count) { mfc_err("Not enough buffers allocated\n"); reqbufs->count = 0; s5p_mfc_clock_on(); @@ -751,7 +751,7 @@ static int s5p_mfc_dec_g_v_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: if (ctx->state >= MFCINST_HEAD_PARSED && ctx->state < MFCINST_ABORT) { - ctrl->val = ctx->dpb_count; + ctrl->val = ctx->pb_count; break; } else if (ctx->state != MFCINST_INIT) { v4l2_err(&dev->v4l2_dev, "Decoding not initialised\n"); @@ -763,7 +763,7 @@ static int s5p_mfc_dec_g_v_ctrl(struct v4l2_ctrl *ctrl) S5P_MFC_R2H_CMD_SEQ_DONE_RET, 0); if (ctx->state >= MFCINST_HEAD_PARSED && ctx->state < MFCINST_ABORT) { - ctrl->val = ctx->dpb_count; + ctrl->val = ctx->pb_count; } else { v4l2_err(&dev->v4l2_dev, "Decoding not initialised\n"); return -EINVAL; @@ -924,10 +924,10 @@ static int s5p_mfc_queue_setup(struct vb2_queue *vq, /* Output plane count is 2 - one for Y and one for CbCr */ *plane_count = 2; /* Setup buffer count */ - if (*buf_count < ctx->dpb_count) - *buf_count = ctx->dpb_count; - if (*buf_count > ctx->dpb_count + MFC_MAX_EXTRA_DPB) - *buf_count = ctx->dpb_count + MFC_MAX_EXTRA_DPB; + if (*buf_count < ctx->pb_count) + *buf_count = ctx->pb_count; + if (*buf_count > ctx->pb_count + MFC_MAX_EXTRA_DPB) + *buf_count = ctx->pb_count + MFC_MAX_EXTRA_DPB; if (*buf_count > MFC_MAX_BUFFERS) *buf_count = MFC_MAX_BUFFERS; } else { diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c index 4f6b553..5e019aa 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c @@ -592,7 +592,7 @@ static int s5p_mfc_ctx_ready(struct s5p_mfc_ctx *ctx) return 1; /* context is ready to encode a frame */ if ((ctx->state == MFCINST_RUNNING || - ctx->state == MFCINST_HEAD_PARSED) && + ctx->state == MFCINST_HEAD_PRODUCED) && ctx->src_queue_cnt >= 1 && ctx->dst_queue_cnt >= 1) return 1; /* context is ready to encode remaining frames */ @@ -649,6 +649,7 @@ static int enc_post_seq_start(struct s5p_mfc_ctx *ctx) struct s5p_mfc_enc_params *p = &ctx->enc_params; struct s5p_mfc_buf *dst_mb; unsigned long flags; + unsigned int enc_pb_count; if (p->seq_hdr_mode == V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE) { spin_lock_irqsave(&dev->irqlock, flags); @@ -661,18 +662,19 @@ static int enc_post_seq_start(struct s5p_mfc_ctx *ctx) vb2_buffer_done(dst_mb->b, VB2_BUF_STATE_DONE); spin_unlock_irqrestore(&dev->irqlock, flags); } - if (IS_MFCV6(dev)) { - ctx->state = MFCINST_HEAD_PARSED; /* for INIT_BUFFER cmd */ - } else { + + if (!IS_MFCV6(dev)) { ctx->state = MFCINST_RUNNING; if (s5p_mfc_ctx_ready(ctx)) set_work_bit_irqsave(ctx); s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); - } - - if (IS_MFCV6(dev)) - ctx->dpb_count = s5p_mfc_hw_call(dev->mfc_ops, + } else { + enc_pb_count = s5p_mfc_hw_call(dev->mfc_ops, get_enc_dpb_count, dev); + if (ctx->pb_count < enc_pb_count) + ctx->pb_count = enc_pb_count; + ctx->state = MFCINST_HEAD_PRODUCED; + } return 0; } @@ -1055,15 +1057,13 @@ static int vidioc_reqbufs(struct file *file, void *priv, } ctx->capture_state = QUEUE_BUFS_REQUESTED; - if (!IS_MFCV6(dev)) { - ret = s5p_mfc_hw_call(ctx->dev->mfc_ops, - alloc_codec_buffers, ctx); - if (ret) { - mfc_err("Failed to allocate encoding buffers\n"); - reqbufs->count = 0; - ret = vb2_reqbufs(&ctx->vq_dst, reqbufs); - return -ENOMEM; - } + ret = s5p_mfc_hw_call(ctx->dev->mfc_ops, + alloc_codec_buffers, ctx); + if (ret) { + mfc_err("Failed to allocate encoding buffers\n"); + reqbufs->count = 0; + ret = vb2_reqbufs(&ctx->vq_dst, reqbufs); + return -ENOMEM; } } else if (reqbufs->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { if (ctx->output_state != QUEUE_FREE) { @@ -1071,6 +1071,19 @@ static int vidioc_reqbufs(struct file *file, void *priv, ctx->output_state); return -EINVAL; } + + if (IS_MFCV6(dev)) { + /* Check for min encoder buffers */ + if (ctx->pb_count && + (reqbufs->count < ctx->pb_count)) { + reqbufs->count = ctx->pb_count; + mfc_debug(2, "Minimum %d output buffers needed\n", + ctx->pb_count); + } else { + ctx->pb_count = reqbufs->count; + } + } + ret = vb2_reqbufs(&ctx->vq_src, reqbufs); if (ret != 0) { mfc_err("error in vb2_reqbufs() for E(S)\n"); @@ -1760,11 +1773,28 @@ static int s5p_mfc_start_streaming(struct vb2_queue *q, unsigned int count) struct s5p_mfc_ctx *ctx = fh_to_ctx(q->drv_priv); struct s5p_mfc_dev *dev = ctx->dev; + if (IS_MFCV6(dev) && (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) { + + if ((ctx->state == MFCINST_GOT_INST) && + (dev->curr_ctx == ctx->num) && dev->hw_lock) { + s5p_mfc_wait_for_done_ctx(ctx, + S5P_MFC_R2H_CMD_SEQ_DONE_RET, + 0); + } + + if (ctx->src_bufs_cnt < ctx->pb_count) { + mfc_err("Need minimum %d OUTPUT buffers\n", + ctx->pb_count); + return -EINVAL; + } + } + v4l2_ctrl_handler_setup(&ctx->ctrl_handler); /* If context is ready then dev = work->data;schedule it to run */ if (s5p_mfc_ctx_ready(ctx)) set_work_bit_irqsave(ctx); s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); + return 0; } diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c index db57f25..383ae77 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c @@ -167,7 +167,7 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx) S5P_FIMV_SCRATCH_BUFFER_ALIGN_V6); ctx->bank1.size = ctx->scratch_buf_size + ctx->tmv_buffer_size + - (ctx->dpb_count * (ctx->luma_dpb_size + + (ctx->pb_count * (ctx->luma_dpb_size + ctx->chroma_dpb_size + ctx->me_buffer_size)); ctx->bank2.size = 0; break; @@ -181,7 +181,7 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx) S5P_FIMV_SCRATCH_BUFFER_ALIGN_V6); ctx->bank1.size = ctx->scratch_buf_size + ctx->tmv_buffer_size + - (ctx->dpb_count * (ctx->luma_dpb_size + + (ctx->pb_count * (ctx->luma_dpb_size + ctx->chroma_dpb_size + ctx->me_buffer_size)); ctx->bank2.size = 0; break; @@ -198,7 +198,6 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx) } BUG_ON(ctx->bank1.dma & ((1 << MFC_BANK1_ALIGN_ORDER) - 1)); } - return 0; } @@ -497,7 +496,7 @@ static int s5p_mfc_set_enc_ref_buffer_v6(struct s5p_mfc_ctx *ctx) mfc_debug(2, "Buf1: %p (%d)\n", (void *)buf_addr1, buf_size1); - for (i = 0; i < ctx->dpb_count; i++) { + for (i = 0; i < ctx->pb_count; i++) { WRITEL(buf_addr1, S5P_FIMV_E_LUMA_DPB_V6 + (4 * i)); buf_addr1 += ctx->luma_dpb_size; WRITEL(buf_addr1, S5P_FIMV_E_CHROMA_DPB_V6 + (4 * i)); @@ -520,7 +519,7 @@ static int s5p_mfc_set_enc_ref_buffer_v6(struct s5p_mfc_ctx *ctx) buf_size1 -= ctx->tmv_buffer_size; mfc_debug(2, "Buf1: %u, buf_size1: %d (ref frames %d)\n", - buf_addr1, buf_size1, ctx->dpb_count); + buf_addr1, buf_size1, ctx->pb_count); if (buf_size1 < 0) { mfc_debug(2, "Not enough memory has been allocated.\n"); return -ENOMEM; @@ -1522,22 +1521,6 @@ static inline int s5p_mfc_run_init_enc_buffers(struct s5p_mfc_ctx *ctx) struct s5p_mfc_dev *dev = ctx->dev; int ret; - ret = s5p_mfc_alloc_codec_buffers_v6(ctx); - if (ret) { - mfc_err("Failed to allocate encoding buffers.\n"); - return -ENOMEM; - } - - /* Header was generated now starting processing - * First set the reference frame buffers - */ - if (ctx->capture_state != QUEUE_BUFS_REQUESTED) { - mfc_err("It seems that destionation buffers were not\n" - "requested.MFC requires that header should be generated\n" - "before allocating codec buffer.\n"); - return -EAGAIN; - } - dev->curr_ctx = ctx->num; s5p_mfc_clean_ctx_int_flags(ctx); ret = s5p_mfc_set_enc_ref_buffer_v6(ctx); @@ -1582,7 +1565,7 @@ static void s5p_mfc_try_run_v6(struct s5p_mfc_dev *dev) mfc_debug(1, "Seting new context to %p\n", ctx); /* Got context to run in ctx */ mfc_debug(1, "ctx->dst_queue_cnt=%d ctx->dpb_count=%d ctx->src_queue_cnt=%d\n", - ctx->dst_queue_cnt, ctx->dpb_count, ctx->src_queue_cnt); + ctx->dst_queue_cnt, ctx->pb_count, ctx->src_queue_cnt); mfc_debug(1, "ctx->state=%d\n", ctx->state); /* Last frame has already been sent to MFC * Now obtaining frames from MFC buffer */ @@ -1647,7 +1630,7 @@ static void s5p_mfc_try_run_v6(struct s5p_mfc_dev *dev) case MFCINST_GOT_INST: s5p_mfc_run_init_enc(ctx); break; - case MFCINST_HEAD_PARSED: /* Only for MFC6.x */ + case MFCINST_HEAD_PRODUCED: ret = s5p_mfc_run_init_enc_buffers(ctx); break; default: -- cgit v0.10.2 From 412cb87d28a1f299ee82fe1c8bfe6cbeec9a4655 Mon Sep 17 00:00:00 2001 From: Seung-Woo Kim Date: Mon, 20 May 2013 23:47:29 -0300 Subject: [media] media: vb2: return for polling if a buffer is available The vb2_poll() does not need to wait next vb_buffer_done() if there is already a buffer in done_list of queue, but current vb2_poll() always waits. So done_list is checked before calling poll_wait(). Signed-off-by: Seung-Woo Kim Acked-by: Marek Szyprowski Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 7d833ee..e3bdc3b 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -2014,7 +2014,8 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait) if (list_empty(&q->queued_list)) return res | POLLERR; - poll_wait(file, &q->done_wq, wait); + if (list_empty(&q->done_list)) + poll_wait(file, &q->done_wq, wait); /* * Take first buffer available for dequeuing. -- cgit v0.10.2 From 57183467c09555d985ae62b79c754e64279381df Mon Sep 17 00:00:00 2001 From: Seung-Woo Kim Date: Mon, 20 May 2013 23:47:30 -0300 Subject: [media] media: v4l2-mem2mem: return for polling if a buffer is available The v4l2_m2m_poll() does not need to wait if there is already a buffer in done_list of source and destination queues, but current v4l2_m2m_poll() always waits. So done_list of each queue is checked before calling poll_wait(). Signed-off-by: Seung-Woo Kim Acked-by: Marek Szyprowski Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 66f599f..9ac39b5 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -486,8 +486,10 @@ unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, if (m2m_ctx->m2m_dev->m2m_ops->unlock) m2m_ctx->m2m_dev->m2m_ops->unlock(m2m_ctx->priv); - poll_wait(file, &src_q->done_wq, wait); - poll_wait(file, &dst_q->done_wq, wait); + if (list_empty(&src_q->done_list)) + poll_wait(file, &src_q->done_wq, wait); + if (list_empty(&dst_q->done_list)) + poll_wait(file, &dst_q->done_wq, wait); if (m2m_ctx->m2m_dev->m2m_ops->lock) m2m_ctx->m2m_dev->m2m_ops->lock(m2m_ctx->priv); -- cgit v0.10.2 From 8b94ca61d7065fa7fa7bdb08ce31a9385be5205b Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Tue, 21 May 2013 04:16:28 -0300 Subject: [media] v4l2-mem2mem: add v4l2_m2m_create_bufs helper Signed-off-by: Philipp Zabel Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 9ac39b5..a756170 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -372,6 +372,20 @@ int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, EXPORT_SYMBOL_GPL(v4l2_m2m_dqbuf); /** + * v4l2_m2m_create_bufs() - create a source or destination buffer, depending + * on the type + */ +int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, + struct v4l2_create_buffers *create) +{ + struct vb2_queue *vq; + + vq = v4l2_m2m_get_vq(m2m_ctx, create->format.type); + return vb2_create_bufs(vq, create); +} +EXPORT_SYMBOL_GPL(v4l2_m2m_create_bufs); + +/** * v4l2_m2m_expbuf() - export a source or destination buffer, depending on * the type */ diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index d3eef01..0f4555b 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -110,6 +110,8 @@ int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_buffer *buf); int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_buffer *buf); +int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, + struct v4l2_create_buffers *create); int v4l2_m2m_expbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_exportbuffer *eb); -- cgit v0.10.2 From 8fdf94a254ab2f90ae79b82e56b1f8e9d7582026 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Tue, 21 May 2013 04:16:29 -0300 Subject: [media] coda: v4l2-compliance fix: add VIDIOC_CREATE_BUFS support Signed-off-by: Philipp Zabel Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index 5612329..f82e1c6 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -571,6 +571,14 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); } +static int vidioc_create_bufs(struct file *file, void *priv, + struct v4l2_create_buffers *create) +{ + struct coda_ctx *ctx = fh_to_ctx(priv); + + return v4l2_m2m_create_bufs(file, ctx->m2m_ctx, create); +} + static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { @@ -605,6 +613,7 @@ static const struct v4l2_ioctl_ops coda_ioctl_ops = { .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, + .vidioc_create_bufs = vidioc_create_bufs, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, -- cgit v0.10.2 From b730627ad65f023dd9ce83047a3076330ebaefe5 Mon Sep 17 00:00:00 2001 From: John Sheu Date: Thu, 23 May 2013 20:41:48 -0300 Subject: [media] v4l2: mem2mem: save irq flags correctly Save flags correctly when taking spinlocks in v4l2_m2m_try_schedule. Signed-off-by: John Sheu Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index a756170..e96497f 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -205,7 +205,7 @@ static void v4l2_m2m_try_run(struct v4l2_m2m_dev *m2m_dev) static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx) { struct v4l2_m2m_dev *m2m_dev; - unsigned long flags_job, flags; + unsigned long flags_job, flags_out, flags_cap; m2m_dev = m2m_ctx->m2m_dev; dprintk("Trying to schedule a job for m2m_ctx: %p\n", m2m_ctx); @@ -223,23 +223,26 @@ static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx) return; } - spin_lock_irqsave(&m2m_ctx->out_q_ctx.rdy_spinlock, flags); + spin_lock_irqsave(&m2m_ctx->out_q_ctx.rdy_spinlock, flags_out); if (list_empty(&m2m_ctx->out_q_ctx.rdy_queue)) { - spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags); + spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, + flags_out); spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job); dprintk("No input buffers available\n"); return; } - spin_lock_irqsave(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags); + spin_lock_irqsave(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags_cap); if (list_empty(&m2m_ctx->cap_q_ctx.rdy_queue)) { - spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags); - spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags); + spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, + flags_cap); + spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, + flags_out); spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job); dprintk("No output buffers available\n"); return; } - spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags); - spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags); + spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags_cap); + spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags_out); if (m2m_dev->m2m_ops->job_ready && (!m2m_dev->m2m_ops->job_ready(m2m_ctx->priv))) { -- cgit v0.10.2 From 644469aefbac3c007284b43ac932ba6f1794a110 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Sat, 25 May 2013 07:25:55 -0300 Subject: [media] s5p-mfc: Remove unused s5p_mfc_get_decoded_status_v6() function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch fixes following compilation warning: CC [M] drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.o drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c:1733:12: warning: ‘s5p_mfc_get_decoded_status_v6’ defined but not used It assigns existing but not used s5p_mfc_get_dec_status_v6() function to the get_dec_status callback. It seems the get_dec_status callback is not used anyway, as there is no corresponding s5p_mfc_hw_call(). Signed-off-by: Sylwester Nawrocki Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c index 383ae77..5eeaecb 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c @@ -62,12 +62,6 @@ static void s5p_mfc_release_dec_desc_buffer_v6(struct s5p_mfc_ctx *ctx) /* NOP */ } -static int s5p_mfc_get_dec_status_v6(struct s5p_mfc_dev *dev) -{ - /* NOP */ - return -1; -} - /* Allocate codec buffers */ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx) { @@ -1713,7 +1707,7 @@ static int s5p_mfc_get_dspl_status_v6(struct s5p_mfc_dev *dev) return mfc_read(dev, S5P_FIMV_D_DISPLAY_STATUS_V6); } -static int s5p_mfc_get_decoded_status_v6(struct s5p_mfc_dev *dev) +static int s5p_mfc_get_dec_status_v6(struct s5p_mfc_dev *dev) { return mfc_read(dev, S5P_FIMV_D_DECODED_STATUS_V6); } -- cgit v0.10.2 From fc906b6d189f26e869b11b94eaa9a733b3950740 Mon Sep 17 00:00:00 2001 From: Arun Kumar K Date: Mon, 27 May 2013 03:39:29 -0300 Subject: [media] s5p-mfc: Remove special clock usage in driver MFC uses two clocks - MFC gate clock and special clock which is named as "sclk_mfc" in exynos4 and "aclk_333" in exynos5 SoC. The driver was doing just a clk_prepare on this special clock without a clk_enable call. As this sclk is the parent of gate clock, it gets prepared and enabled along with the gate clock. So there is no need for the driver to use this sclk. This patch removes the sclk usage from driver. Signed-off-by: Arun Kumar K Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c index 3b2345e..78280eb 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c @@ -1362,7 +1362,6 @@ static struct s5p_mfc_variant mfc_drvdata_v5 = { .port_num = MFC_NUM_PORTS, .buf_size = &buf_size_v5, .buf_align = &mfc_buf_align_v5, - .mclk_name = "sclk_mfc", .fw_name = "s5p-mfc.fw", }; @@ -1389,7 +1388,6 @@ static struct s5p_mfc_variant mfc_drvdata_v6 = { .port_num = MFC_NUM_PORTS_V6, .buf_size = &buf_size_v6, .buf_align = &mfc_buf_align_v6, - .mclk_name = "aclk_333", .fw_name = "s5p-mfc-v6.fw", }; diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_common.h b/drivers/media/platform/s5p-mfc/s5p_mfc_common.h index 975d1b2..4e81ab8 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_common.h +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_common.h @@ -232,7 +232,6 @@ struct s5p_mfc_variant { unsigned int port_num; struct s5p_mfc_buf_size *buf_size; struct s5p_mfc_buf_align *buf_align; - char *mclk_name; char *fw_name; }; diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c index 6aa38a5..cab6e0b 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c @@ -50,19 +50,6 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) goto err_p_ip_clk; } - pm->clock = clk_get(&dev->plat_dev->dev, dev->variant->mclk_name); - if (IS_ERR(pm->clock)) { - mfc_err("Failed to get MFC clock\n"); - ret = PTR_ERR(pm->clock); - goto err_g_ip_clk_2; - } - - ret = clk_prepare(pm->clock); - if (ret) { - mfc_err("Failed to prepare MFC clock\n"); - goto err_p_ip_clk_2; - } - atomic_set(&pm->power, 0); #ifdef CONFIG_PM_RUNTIME pm->device = &dev->plat_dev->dev; @@ -72,10 +59,6 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) atomic_set(&clk_ref, 0); #endif return 0; -err_p_ip_clk_2: - clk_put(pm->clock); -err_g_ip_clk_2: - clk_unprepare(pm->clock_gate); err_p_ip_clk: clk_put(pm->clock_gate); err_g_ip_clk: @@ -86,8 +69,6 @@ void s5p_mfc_final_pm(struct s5p_mfc_dev *dev) { clk_unprepare(pm->clock_gate); clk_put(pm->clock_gate); - clk_unprepare(pm->clock); - clk_put(pm->clock); #ifdef CONFIG_PM_RUNTIME pm_runtime_disable(pm->device); #endif -- cgit v0.10.2 From ac5f867fbfbd1ff5a43e796ed470deff42b630d2 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Tue, 28 May 2013 03:26:14 -0300 Subject: [media] s5p-mfc: separate encoder parameters for h264 and mpeg4 This patch fixes a bug which caused overwriting h264 codec parameters by mpeg4 parameters during V4L2 control setting. Signed-off-by: Andrzej Hajda Signed-off-by: Kyungmin Park Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_common.h b/drivers/media/platform/s5p-mfc/s5p_mfc_common.h index 4e81ab8..ef4074c 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_common.h +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_common.h @@ -438,7 +438,7 @@ struct s5p_mfc_enc_params { u32 rc_framerate_num; u32 rc_framerate_denom; - union { + struct { struct s5p_mfc_h264_enc_params h264; struct s5p_mfc_mpeg4_enc_params mpeg4; } codec; -- cgit v0.10.2 From 69c9fe6f4afae54cad12635bdb8e90e7d832e240 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Tue, 28 May 2013 03:26:15 -0300 Subject: [media] s5p-mfc: v4l2 controls setup routine moved to initialization code Callback .start_streaming is called once for every queue, so v4l2_ctrl_handler_setup was called twice during stream start. Moving v4l2_ctrl_handler_setup to context initialization reduces numbers of calls and seems to be more consistent with API. Signed-off-by: Andrzej Hajda Signed-off-by: Kyungmin Park Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c index 5e019aa..5d97a98 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c @@ -1789,7 +1789,6 @@ static int s5p_mfc_start_streaming(struct vb2_queue *q, unsigned int count) } } - v4l2_ctrl_handler_setup(&ctx->ctrl_handler); /* If context is ready then dev = work->data;schedule it to run */ if (s5p_mfc_ctx_ready(ctx)) set_work_bit_irqsave(ctx); @@ -1950,6 +1949,7 @@ int s5p_mfc_enc_ctrls_setup(struct s5p_mfc_ctx *ctx) if (controls[i].is_volatile && ctx->ctrls[i]) ctx->ctrls[i]->flags |= V4L2_CTRL_FLAG_VOLATILE; } + v4l2_ctrl_handler_setup(&ctx->ctrl_handler); return 0; } -- cgit v0.10.2 From 4130eabc55f4d4d1510d2e1c556fe3e0237c5ba5 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Tue, 28 May 2013 03:26:16 -0300 Subject: [media] s5p-mfc: added missing end-of-lines in debug messages Many debug messages missed end-of-line. Signed-off-by: Andrzej Hajda Signed-off-by: Kyungmin Park Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c index 78280eb..d12faa6 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c @@ -562,7 +562,7 @@ static void s5p_mfc_handle_stream_complete(struct s5p_mfc_ctx *ctx, struct s5p_mfc_dev *dev = ctx->dev; struct s5p_mfc_buf *mb_entry; - mfc_debug(2, "Stream completed"); + mfc_debug(2, "Stream completed\n"); s5p_mfc_clear_int_flags(dev); ctx->int_type = reason; diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_debug.h b/drivers/media/platform/s5p-mfc/s5p_mfc_debug.h index bd5cd4a..8e608f5 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_debug.h +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_debug.h @@ -30,8 +30,8 @@ extern int debug; #define mfc_debug(level, fmt, args...) #endif -#define mfc_debug_enter() mfc_debug(5, "enter") -#define mfc_debug_leave() mfc_debug(5, "leave") +#define mfc_debug_enter() mfc_debug(5, "enter\n") +#define mfc_debug_leave() mfc_debug(5, "leave\n") #define mfc_err(fmt, args...) \ do { \ diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c index 5d97a98..2549967 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c @@ -719,9 +719,9 @@ static int enc_post_frame_start(struct s5p_mfc_ctx *ctx) slice_type = s5p_mfc_hw_call(dev->mfc_ops, get_enc_slice_type, dev); strm_size = s5p_mfc_hw_call(dev->mfc_ops, get_enc_strm_size, dev); - mfc_debug(2, "Encoded slice type: %d", slice_type); - mfc_debug(2, "Encoded stream size: %d", strm_size); - mfc_debug(2, "Display order: %d", + mfc_debug(2, "Encoded slice type: %d\n", slice_type); + mfc_debug(2, "Encoded stream size: %d\n", strm_size); + mfc_debug(2, "Display order: %d\n", mfc_read(dev, S5P_FIMV_ENC_SI_PIC_CNT)); spin_lock_irqsave(&dev->irqlock, flags); if (slice_type >= 0) { @@ -1546,14 +1546,14 @@ int vidioc_encoder_cmd(struct file *file, void *priv, spin_lock_irqsave(&dev->irqlock, flags); if (list_empty(&ctx->src_queue)) { - mfc_debug(2, "EOS: empty src queue, entering finishing state"); + mfc_debug(2, "EOS: empty src queue, entering finishing state\n"); ctx->state = MFCINST_FINISHING; if (s5p_mfc_ctx_ready(ctx)) set_work_bit_irqsave(ctx); spin_unlock_irqrestore(&dev->irqlock, flags); s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); } else { - mfc_debug(2, "EOS: marking last buffer of stream"); + mfc_debug(2, "EOS: marking last buffer of stream\n"); buf = list_entry(ctx->src_queue.prev, struct s5p_mfc_buf, list); if (buf->flags & MFC_BUF_FLAG_USED) @@ -1622,9 +1622,9 @@ static int check_vb_with_fmt(struct s5p_mfc_fmt *fmt, struct vb2_buffer *vb) mfc_err("failed to get plane cookie\n"); return -EINVAL; } - mfc_debug(2, "index: %d, plane[%d] cookie: 0x%08zx", - vb->v4l2_buf.index, i, - vb2_dma_contig_plane_dma_addr(vb, i)); + mfc_debug(2, "index: %d, plane[%d] cookie: 0x%08zx\n", + vb->v4l2_buf.index, i, + vb2_dma_contig_plane_dma_addr(vb, i)); } return 0; } diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c index 0af05a2..368582b 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c @@ -1275,8 +1275,8 @@ static int s5p_mfc_run_enc_frame(struct s5p_mfc_ctx *ctx) spin_unlock_irqrestore(&dev->irqlock, flags); dev->curr_ctx = ctx->num; s5p_mfc_clean_ctx_int_flags(ctx); - mfc_debug(2, "encoding buffer with index=%d state=%d", - src_mb ? src_mb->b->v4l2_buf.index : -1, ctx->state); + mfc_debug(2, "encoding buffer with index=%d state=%d\n", + src_mb ? src_mb->b->v4l2_buf.index : -1, ctx->state); s5p_mfc_encode_one_frame_v5(ctx); return 0; } diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c index 5eeaecb..7d4c5e1 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c @@ -442,8 +442,8 @@ static int s5p_mfc_set_enc_stream_buffer_v6(struct s5p_mfc_ctx *ctx, WRITEL(addr, S5P_FIMV_E_STREAM_BUFFER_ADDR_V6); /* 16B align */ WRITEL(size, S5P_FIMV_E_STREAM_BUFFER_SIZE_V6); - mfc_debug(2, "stream buf addr: 0x%08lx, size: 0x%d", - addr, size); + mfc_debug(2, "stream buf addr: 0x%08lx, size: 0x%d\n", + addr, size); return 0; } @@ -456,8 +456,8 @@ static void s5p_mfc_set_enc_frame_buffer_v6(struct s5p_mfc_ctx *ctx, WRITEL(y_addr, S5P_FIMV_E_SOURCE_LUMA_ADDR_V6); /* 256B align */ WRITEL(c_addr, S5P_FIMV_E_SOURCE_CHROMA_ADDR_V6); - mfc_debug(2, "enc src y buf addr: 0x%08lx", y_addr); - mfc_debug(2, "enc src c buf addr: 0x%08lx", c_addr); + mfc_debug(2, "enc src y buf addr: 0x%08lx\n", y_addr); + mfc_debug(2, "enc src c buf addr: 0x%08lx\n", c_addr); } static void s5p_mfc_get_enc_frame_buffer_v6(struct s5p_mfc_ctx *ctx, @@ -472,8 +472,8 @@ static void s5p_mfc_get_enc_frame_buffer_v6(struct s5p_mfc_ctx *ctx, enc_recon_y_addr = READL(S5P_FIMV_E_RECON_LUMA_DPB_ADDR_V6); enc_recon_c_addr = READL(S5P_FIMV_E_RECON_CHROMA_DPB_ADDR_V6); - mfc_debug(2, "recon y addr: 0x%08lx", enc_recon_y_addr); - mfc_debug(2, "recon c addr: 0x%08lx", enc_recon_c_addr); + mfc_debug(2, "recon y addr: 0x%08lx\n", enc_recon_y_addr); + mfc_debug(2, "recon c addr: 0x%08lx\n", enc_recon_c_addr); } /* Set encoding ref & codec buffer */ @@ -1424,8 +1424,8 @@ static inline int s5p_mfc_run_enc_frame(struct s5p_mfc_ctx *ctx) src_y_addr = vb2_dma_contig_plane_dma_addr(src_mb->b, 0); src_c_addr = vb2_dma_contig_plane_dma_addr(src_mb->b, 1); - mfc_debug(2, "enc src y addr: 0x%08lx", src_y_addr); - mfc_debug(2, "enc src c addr: 0x%08lx", src_c_addr); + mfc_debug(2, "enc src y addr: 0x%08lx\n", src_y_addr); + mfc_debug(2, "enc src c addr: 0x%08lx\n", src_c_addr); s5p_mfc_set_enc_frame_buffer_v6(ctx, src_y_addr, src_c_addr); diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c index cab6e0b..11d5f1d 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c @@ -79,7 +79,7 @@ int s5p_mfc_clock_on(void) int ret; #ifdef CLK_DEBUG atomic_inc(&clk_ref); - mfc_debug(3, "+ %d", atomic_read(&clk_ref)); + mfc_debug(3, "+ %d\n", atomic_read(&clk_ref)); #endif ret = clk_enable(pm->clock_gate); return ret; @@ -89,7 +89,7 @@ void s5p_mfc_clock_off(void) { #ifdef CLK_DEBUG atomic_dec(&clk_ref); - mfc_debug(3, "- %d", atomic_read(&clk_ref)); + mfc_debug(3, "- %d\n", atomic_read(&clk_ref)); #endif clk_disable(pm->clock_gate); } -- cgit v0.10.2 From d1c1cc664342cf197afeea4b0dd8145d1edee35c Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Wed, 29 May 2013 00:10:00 -0300 Subject: [media] s5p-mfc: Add NULL check for allocated buffer In certain cases, dma_alloc_coherent returns NULL. Add check for NULL pointer. Signed-off-by: Sachin Kamat Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c b/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c index 2e5f30b..dc1fc94 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c @@ -38,7 +38,7 @@ int s5p_mfc_alloc_firmware(struct s5p_mfc_dev *dev) dev->fw_virt_addr = dma_alloc_coherent(dev->mem_dev_l, dev->fw_size, &dev->bank1, GFP_KERNEL); - if (IS_ERR(dev->fw_virt_addr)) { + if (IS_ERR_OR_NULL(dev->fw_virt_addr)) { dev->fw_virt_addr = NULL; mfc_err("Allocating bitprocessor buffer failed\n"); return -ENOMEM; -- cgit v0.10.2 From e919b86c3b018c0e0c5e522354e743dcc0824ee1 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 3 Jun 2013 02:02:31 -0700 Subject: staging: alarm-dev: information leak in alarm_ioctl() Smatch complains that if we pass an invalid clock type then "ts" is never set. We need to check for errors earlier, otherwise we end up passing uninitialized stack data to userspace. Signed-off-by: Dan Carpenter Acked-by: John Stultz Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/android/alarm-dev.c b/drivers/staging/android/alarm-dev.c index ceb1c64..c8600d9 100644 --- a/drivers/staging/android/alarm-dev.c +++ b/drivers/staging/android/alarm-dev.c @@ -264,6 +264,8 @@ static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg) } rv = alarm_do_ioctl(file, cmd, &ts); + if (rv) + return rv; switch (ANDROID_ALARM_BASE_CMD(cmd)) { case ANDROID_ALARM_GET_TIME(0): @@ -272,7 +274,7 @@ static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; } - return rv; + return 0; } #ifdef CONFIG_COMPAT static long alarm_compat_ioctl(struct file *file, unsigned int cmd, -- cgit v0.10.2 From 350753bf2bd1267f471e89829d68c35b9abf4930 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 21 May 2013 12:39:31 +0200 Subject: sh-pfc: r8a7779: Don't group USB OVC and PENC pins The USB_OVCn pins are alternate options for USB over-current detection when using a 3.3V USB interface. As they're not mandatory they can be used independently of the USB PENC pins. Don't group the USB_OVCn and PENC pins to avoid conflicts when the USB_OVCn pins are used by another function. Reported-by: Sergei Shtylyov Signed-off-by: Laurent Pinchart Acked-by: Linus Walleij Signed-off-by: Simon Horman diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7779.c b/drivers/pinctrl/sh-pfc/pfc-r8a7779.c index 791a671..8cd90e7 100644 --- a/drivers/pinctrl/sh-pfc/pfc-r8a7779.c +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7779.c @@ -2357,27 +2357,48 @@ static const unsigned int sdhi3_wp_mux[] = { }; /* - USB0 ------------------------------------------------------------------- */ static const unsigned int usb0_pins[] = { - /* OVC */ - 150, 154, + /* PENC */ + 154, }; static const unsigned int usb0_mux[] = { - USB_OVC0_MARK, USB_PENC0_MARK, + USB_PENC0_MARK, +}; +static const unsigned int usb0_ovc_pins[] = { + /* USB_OVC */ + 150 +}; +static const unsigned int usb0_ovc_mux[] = { + USB_OVC0_MARK, }; /* - USB1 ------------------------------------------------------------------- */ static const unsigned int usb1_pins[] = { - /* OVC */ - 152, 155, + /* PENC */ + 155, }; static const unsigned int usb1_mux[] = { - USB_OVC1_MARK, USB_PENC1_MARK, + USB_PENC1_MARK, +}; +static const unsigned int usb1_ovc_pins[] = { + /* USB_OVC */ + 152, +}; +static const unsigned int usb1_ovc_mux[] = { + USB_OVC1_MARK, }; /* - USB2 ------------------------------------------------------------------- */ static const unsigned int usb2_pins[] = { - /* OVC, PENC */ - 125, 156, + /* PENC */ + 156, }; static const unsigned int usb2_mux[] = { - USB_OVC2_MARK, USB_PENC2_MARK, + USB_PENC2_MARK, +}; +static const unsigned int usb2_ovc_pins[] = { + /* USB_OVC */ + 125, +}; +static const unsigned int usb2_ovc_mux[] = { + USB_OVC2_MARK, }; static const struct sh_pfc_pin_group pinmux_groups[] = { @@ -2501,8 +2522,11 @@ static const struct sh_pfc_pin_group pinmux_groups[] = { SH_PFC_PIN_GROUP(sdhi3_cd), SH_PFC_PIN_GROUP(sdhi3_wp), SH_PFC_PIN_GROUP(usb0), + SH_PFC_PIN_GROUP(usb0_ovc), SH_PFC_PIN_GROUP(usb1), + SH_PFC_PIN_GROUP(usb1_ovc), SH_PFC_PIN_GROUP(usb2), + SH_PFC_PIN_GROUP(usb2_ovc), }; static const char * const du0_groups[] = { @@ -2683,14 +2707,17 @@ static const char * const sdhi3_groups[] = { static const char * const usb0_groups[] = { "usb0", + "usb0_ovc", }; static const char * const usb1_groups[] = { "usb1", + "usb1_ovc", }; static const char * const usb2_groups[] = { "usb2", + "usb2_ovc", }; static const struct sh_pfc_function pinmux_functions[] = { -- cgit v0.10.2 From 5600a8485603b240790005b9b58de4c4f6ada69d Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Wed, 22 May 2013 19:47:05 +0900 Subject: ARM: shmobile: sh73a0: Update CMT clockevent rating to 80 Update the CMT clockevent rating from 125 to 80. This resolves a boot-failure regression for kzm9g-reference in v3.10-rc1 introduced by f7db706b132f11c79ae1d74b2382e0926cf31644 ("ARM: 7674/1: smp: Avoid dummy clockevent being preferred over real"). The patch noted above reduces the rating of dummy clockevent from 400 to 100. This patch reduces the rating of CMT so that it is once again less than that of the dummy clockevent. Signed-off-by: Simon Horman diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c index fdf3894..9696f36 100644 --- a/arch/arm/mach-shmobile/setup-sh73a0.c +++ b/arch/arm/mach-shmobile/setup-sh73a0.c @@ -252,7 +252,7 @@ static struct sh_timer_config cmt10_platform_data = { .name = "CMT10", .channel_offset = 0x10, .timer_bit = 0, - .clockevent_rating = 125, + .clockevent_rating = 80, .clocksource_rating = 125, }; -- cgit v0.10.2 From 8edf3fd6eb0649b0f19363baf23bca39c6fbdba4 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 28 May 2013 21:32:47 +0200 Subject: iwlwifi: don't print module loading error if not modular MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If the opmode modules aren't modular, there's no point in printing an error message that request_module() failed. This will happen because the probe runs during iwlwifi's init and the opmode is only added during its init. Reported-by: Jörg Otte Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c index 39aad98..40fed1f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-drv.c +++ b/drivers/net/wireless/iwlwifi/iwl-drv.c @@ -1000,10 +1000,12 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context) */ if (load_module) { err = request_module("%s", op->name); +#ifdef CONFIG_IWLWIFI_OPMODE_MODULAR if (err) IWL_ERR(drv, "failed to load module %s (error %d), is dynamic loading enabled?\n", op->name, err); +#endif } return; -- cgit v0.10.2 From b28b6dfe580ab1ab8bf08b908fd69e299b877103 Mon Sep 17 00:00:00 2001 From: Nikolay Martynov Date: Fri, 31 May 2013 01:29:12 -0400 Subject: iwlwifi: dvm: fix chain noise calibration First step of chain noise calibration process had disable flag check inverted. Chain noise calibration never started because of this. Tested on intel 5300 with two antennas attached. The driver correctly disabled one chain. Cc: stable@vger.kernel.org Signed-off-by: Nikolay Martynov Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg diff --git a/drivers/net/wireless/iwlwifi/dvm/rxon.c b/drivers/net/wireless/iwlwifi/dvm/rxon.c index 707446f..cd1ad001 100644 --- a/drivers/net/wireless/iwlwifi/dvm/rxon.c +++ b/drivers/net/wireless/iwlwifi/dvm/rxon.c @@ -1378,7 +1378,7 @@ static void iwlagn_chain_noise_reset(struct iwl_priv *priv) struct iwl_chain_noise_data *data = &priv->chain_noise_data; int ret; - if (!(priv->calib_disabled & IWL_CHAIN_NOISE_CALIB_DISABLED)) + if (priv->calib_disabled & IWL_CHAIN_NOISE_CALIB_DISABLED) return; if ((data->state == IWL_CHAIN_NOISE_ALIVE) && -- cgit v0.10.2 From 2edc6ec6330c7906f4dbd7f5da71be8989efc5a3 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Sun, 2 Jun 2013 19:49:15 +0300 Subject: iwlwifi: mvm: correctly set the flags for BAR Somehow, the Tx flags for BAR were completely wrong. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c index f212f16..48c1891 100644 --- a/drivers/net/wireless/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/iwlwifi/mvm/tx.c @@ -180,7 +180,8 @@ static void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); return; } else if (ieee80211_is_back_req(fc)) { - tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); + tx_cmd->tx_flags |= + cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR); } /* HT rate doesn't make sense for a non data frame */ -- cgit v0.10.2 From 466318a87f28cb3ba0d08a3b7ef1a37ae73d5aa7 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Mon, 3 Jun 2013 10:33:55 -0400 Subject: xen/smp: Fixup NOHZ per cpu data when onlining an offline CPU. The xen_play_dead is an undead function. When the vCPU is told to offline it ends up calling xen_play_dead wherin it calls the VCPUOP_down hypercall which offlines the vCPU. However, when the vCPU is onlined back, it resumes execution right after VCPUOP_down hypercall. That was OK (albeit the API for play_dead assumes that the CPU stays dead and never returns) but with commit 4b0c0f294 (tick: Cleanup NOHZ per cpu data on cpu down) that is no longer safe as said commit resets the ts->inidle which at the start of the cpu_idle loop was set. The net effect is that we get this warn: Broke affinity for irq 16 installing Xen timer for CPU 1 cpu 1 spinlock event irq 48 ------------[ cut here ]------------ WARNING: at /home/konrad/linux-linus/kernel/time/tick-sched.c:935 tick_nohz_idle_exit+0x195/0x1b0() Modules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.10.0-rc3upstream-00068-gdcdbe33 #1 Hardware name: BIOSTAR Group N61PB-M2S/N61PB-M2S, BIOS 6.00 PG 09/03/2009 ffffffff8193b448 ffff880039da5e60 ffffffff816707c8 ffff880039da5ea0 ffffffff8108ce8b ffff880039da4010 ffff88003fa8e500 ffff880039da4010 0000000000000001 ffff880039da4000 ffff880039da4010 ffff880039da5eb0 Call Trace: [] dump_stack+0x19/0x1b [] warn_slowpath_common+0x6b/0xa0 [] warn_slowpath_null+0x15/0x20 [] tick_nohz_idle_exit+0x195/0x1b0 [] cpu_startup_entry+0x205/0x250 [] cpu_bringup_and_idle+0x13/0x15 ---[ end trace 915c8c486004dda1 ]--- b/c ts_inidle is set to zero. Thomas suggested that we just add a workaround to call tick_nohz_idle_enter before returning from xen_play_dead() - and that is what this patch does and fixes the issue. We also add the stable part b/c git commit 4b0c0f294 is on the stable tree. CC: stable@vger.kernel.org Suggested-by: Thomas Gleixner Signed-off-by: Konrad Rzeszutek Wilk diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index fb44426..d99cae8 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -447,6 +448,13 @@ static void __cpuinit xen_play_dead(void) /* used only with HOTPLUG_CPU */ play_dead_common(); HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL); cpu_bringup(); + /* + * commit 4b0c0f294 (tick: Cleanup NOHZ per cpu data on cpu down) + * clears certain data that the cpu_idle loop (which called us + * and that we return from) expects. The only way to get that + * data back is to call: + */ + tick_nohz_idle_enter(); } #else /* !CONFIG_HOTPLUG_CPU */ -- cgit v0.10.2 From 8eafc0a161123d90617c9ca2eddfe87b382b1b89 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 4 Jun 2013 16:02:54 +0200 Subject: ALSA: usb-audio - Apply Logitech QuickCam Pro 9000 quirk only to audio iface ... instead of applying to all interfaces. Reference: http://forums.gentoo.org/viewtopic-p-6886404.html Cc: Signed-off-by: Takashi Iwai diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 6ae71b8..8b75bcf 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -215,7 +215,13 @@ .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }, { - USB_DEVICE(0x046d, 0x0990), + .match_flags = USB_DEVICE_ID_MATCH_DEVICE | + USB_DEVICE_ID_MATCH_INT_CLASS | + USB_DEVICE_ID_MATCH_INT_SUBCLASS, + .idVendor = 0x046d, + .idProduct = 0x0990, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { .vendor_name = "Logitech, Inc.", .product_name = "QuickCam Pro 9000", -- cgit v0.10.2 From 53d3b4d7778daf15900867336c85d3f8dd70600c Mon Sep 17 00:00:00 2001 From: Egbert Eich Date: Tue, 4 Jun 2013 17:13:21 +0200 Subject: drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC. In intel_sdvo_get_lvds_modes() the wrong i2c adapter record is used for DDC. Thus the code will always have to rely on a LVDS panel mode supplied by VBT. In most cases this succeeds, so this didn't get detected for quite a while. This regression seems to have been introduced in commit f899fc64cda8569d0529452aafc0da31c042df2e Author: Chris Wilson Date: Tue Jul 20 15:44:45 2010 -0700 drm/i915: use GMBUS to manage i2c links Signed-off-by: Egbert Eich Cc: stable@vger.kernel.org Reviewed-by: Chris Wilson [danvet: Add note about which commit likely introduced this issue.] Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index d154284..4c47b44 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1776,7 +1776,7 @@ static void intel_sdvo_get_lvds_modes(struct drm_connector *connector) * Assume that the preferred modes are * arranged in priority order. */ - intel_ddc_get_modes(connector, intel_sdvo->i2c); + intel_ddc_get_modes(connector, &intel_sdvo->ddc); if (list_empty(&connector->probed_modes) == false) goto end; -- cgit v0.10.2 From eeb065582a9618c1cf5b7154df7bae06aeb44636 Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 4 Jun 2013 09:30:55 -0700 Subject: Input: synaptics - fix sync lost after resume on some laptops In summary, the symptom is intermittent key events lost after resume on some machines with synaptics touchpad (seems this is synaptics _only_), and key events loss is due to serio port reconnect after psmouse sync lost. Removing psmouse and inserting it back during the suspend/resume process is able to work around the issue, so the difference between psmouse_connect() and psmouse_reconnect() is the key to the root cause of this problem. After comparing the two different paths, synaptics driver has its own implementation of synaptics_reconnect(), and the missing psmouse_probe() seems significant, the patch below added psmouse_probe() to the reconnect process, and has been verified many times that the issue could not be reliably reproduced. There are two PS/2 commands in psmouse_probe(): 1. PSMOUSE_CMD_GETID 2. PSMOUSE_CMD_RESET_DIS Only the PSMOUSE_CMD_GETID seems to be significant. The PSMOUSE_CMD_RESET_DIS is irrelevant to this issue after trying several times. So we have only implemented this patch to issue the PSMOUSE_CMD_GETID so far. Tested-by: Daniel Manrique Signed-off-by: James M Leddy Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 2f78538..b2420ae 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1379,6 +1379,7 @@ static int synaptics_reconnect(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; struct synaptics_data old_priv = *priv; + unsigned char param[2]; int retry = 0; int error; @@ -1394,6 +1395,7 @@ static int synaptics_reconnect(struct psmouse *psmouse) */ ssleep(1); } + ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); error = synaptics_detect(psmouse, 0); } while (error && ++retry < 3); -- cgit v0.10.2 From 3bd1f7e2db4124a2726f9afdeaaf82f09b0bd8eb Mon Sep 17 00:00:00 2001 From: Ping Cheng Date: Thu, 23 May 2013 10:22:33 -0700 Subject: Input: wacom - fix a typo for Cintiq 22HDT And make the lines easier to read. Signed-off-by: Ping Cheng Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 5c68e44..518282d 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -1966,7 +1966,8 @@ static const struct wacom_features wacom_features_0xF4 = 63, WACOM_24HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES }; static const struct wacom_features wacom_features_0xF8 = { "Wacom Cintiq 24HD touch", WACOM_PKGLEN_INTUOS, 104480, 65600, 2047, /* Pen */ - 63, WACOM_24HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, .oVid = USB_VENDOR_ID_WACOM, .oPid = 0xf6 }; + 63, WACOM_24HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, + .oVid = USB_VENDOR_ID_WACOM, .oPid = 0xf6 }; static const struct wacom_features wacom_features_0xF6 = { "Wacom Cintiq 24HD touch", .type = WACOM_24HDT, /* Touch */ .oVid = USB_VENDOR_ID_WACOM, .oPid = 0xf8, .touch_max = 10 }; @@ -2009,7 +2010,8 @@ static const struct wacom_features wacom_features_0xFA = 63, WACOM_22HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES }; static const struct wacom_features wacom_features_0x5B = { "Wacom Cintiq 22HDT", WACOM_PKGLEN_INTUOS, 95840, 54260, 2047, - 63, WACOM_24HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x5e }; + 63, WACOM_22HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, + .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x5e }; static const struct wacom_features wacom_features_0x5E = { "Wacom Cintiq 22HDT", .type = WACOM_24HDT, .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x5b, .touch_max = 10 }; @@ -2042,7 +2044,7 @@ static const struct wacom_features wacom_features_0xE5 = static const struct wacom_features wacom_features_0xE6 = { "Wacom ISDv4 E6", WACOM_PKGLEN_TPC2FG, 27760, 15694, 255, 0, TABLETPC2FG, WACOM_INTUOS_RES, WACOM_INTUOS_RES, - .touch_max = 2 }; + .touch_max = 2 }; static const struct wacom_features wacom_features_0xEC = { "Wacom ISDv4 EC", WACOM_PKGLEN_GRAPHIRE, 25710, 14500, 255, 0, TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; -- cgit v0.10.2 From d8a1d0d54d5fdac0347b75e9afd554b3dfaa465f Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 4 Jun 2013 18:50:28 +0200 Subject: USB: zte_ev: fix broken open Remove bogus port-number check in open and close, which prevented this driver from being used with a minor number different from zero. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c index b9a88f2..870e01e 100644 --- a/drivers/usb/serial/zte_ev.c +++ b/drivers/usb/serial/zte_ev.c @@ -41,9 +41,6 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, int len; unsigned char *buf; - if (port->number != 0) - return -ENODEV; - buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; @@ -166,9 +163,6 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) int len; unsigned char *buf; - if (port->number != 0) - return; - buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL); if (!buf) return; -- cgit v0.10.2 From a07088098a650267b2eda689538133a324b9523f Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 4 Jun 2013 18:50:29 +0200 Subject: USB: keyspan: fix bogus array index The outcont_endpoints array was indexed using the port minor number (which can be greater than the array size) rather than the device port number. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index eb30d7b..d85a3e0 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -1559,7 +1559,7 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, d_details = s_priv->device_details; device_port = port->number - port->serial->minor; - outcont_urb = d_details->outcont_endpoints[port->number]; + outcont_urb = d_details->outcont_endpoints[device_port]; this_urb = p_priv->outcont_urb; dev_dbg(&port->dev, "%s - endpoint %d\n", __func__, usb_pipeendpoint(this_urb->pipe)); -- cgit v0.10.2 From c1ec1bcf0c97cdd4e25f16524c962fae9a4a39f9 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 4 Jun 2013 18:50:30 +0200 Subject: USB: keyspan: remove unused endpoint-array access Remove the no longer used endpoint-array access completely. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index d85a3e0..3549d07 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -1548,7 +1548,6 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, struct keyspan_serial_private *s_priv; struct keyspan_port_private *p_priv; const struct keyspan_device_details *d_details; - int outcont_urb; struct urb *this_urb; int device_port, err; @@ -1559,7 +1558,6 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, d_details = s_priv->device_details; device_port = port->number - port->serial->minor; - outcont_urb = d_details->outcont_endpoints[device_port]; this_urb = p_priv->outcont_urb; dev_dbg(&port->dev, "%s - endpoint %d\n", __func__, usb_pipeendpoint(this_urb->pipe)); @@ -1685,14 +1683,6 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, err = usb_submit_urb(this_urb, GFP_ATOMIC); if (err != 0) dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err); -#if 0 - else { - dev_dbg(&port->dev, "%s - usb_submit_urb(%d) OK %d bytes (end %d)\n", __func__ - outcont_urb, this_urb->transfer_buffer_length, - usb_pipeendpoint(this_urb->pipe)); - } -#endif - return 0; } -- cgit v0.10.2 From a26f009a070e840fadacb91013b2391ba7ab6cc2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 4 Jun 2013 18:50:31 +0200 Subject: USB: mos7720: fix hardware flow control The register access to enable hardware flow control depends on the device port number and not the port minor number. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 6eac266..f27c621 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1629,7 +1629,7 @@ static void change_port_settings(struct tty_struct *tty, mos7720_port->shadowMCR |= (UART_MCR_XONANY); /* To set hardware flow control to the specified * * serial port, in SP1/2_CONTROL_REG */ - if (port->number) + if (port_number) write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x01); else write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x02); -- cgit v0.10.2 From 702df9f1819c7fc7e257251fabc5eec674342c32 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Wed, 22 May 2013 22:41:00 +0100 Subject: iio:callback buffer: free the scan_mask MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reported-by: Michał Mirosław Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/buffer_cb.c b/drivers/iio/buffer_cb.c index 9201022..9d19ba7 100644 --- a/drivers/iio/buffer_cb.c +++ b/drivers/iio/buffer_cb.c @@ -64,7 +64,7 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, while (chan->indio_dev) { if (chan->indio_dev != indio_dev) { ret = -EINVAL; - goto error_release_channels; + goto error_free_scan_mask; } set_bit(chan->channel->scan_index, cb_buff->buffer.scan_mask); @@ -73,6 +73,8 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, return cb_buff; +error_free_scan_mask: + kfree(cb_buff->buffer.scan_mask); error_release_channels: iio_channel_release_all(cb_buff->channels); error_free_cb_buff: @@ -100,6 +102,7 @@ EXPORT_SYMBOL_GPL(iio_channel_stop_all_cb); void iio_channel_release_all_cb(struct iio_cb_buffer *cb_buff) { + kfree(cb_buff->buffer.scan_mask); iio_channel_release_all(cb_buff->channels); kfree(cb_buff); } -- cgit v0.10.2 From 60bba385c5e86ee6a654e3345093eb48e258eb1d Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 4 Jun 2013 16:13:25 +0300 Subject: staging: alarm-dev: information leak in alarm_compat_ioctl() If we pass an invalid clock type then "ts" is never set. We need to check for errors earlier, otherwise we end up passing uninitialized stack data to userspace. Reported-by: John Stultz Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/android/alarm-dev.c b/drivers/staging/android/alarm-dev.c index c8600d9..6dc27da 100644 --- a/drivers/staging/android/alarm-dev.c +++ b/drivers/staging/android/alarm-dev.c @@ -297,6 +297,8 @@ static long alarm_compat_ioctl(struct file *file, unsigned int cmd, } rv = alarm_do_ioctl(file, cmd, &ts); + if (rv) + return rv; switch (ANDROID_ALARM_BASE_CMD(cmd)) { case ANDROID_ALARM_GET_TIME(0): /* NOTE: we modified cmd above */ @@ -305,7 +307,7 @@ static long alarm_compat_ioctl(struct file *file, unsigned int cmd, break; } - return rv; + return 0; } #endif -- cgit v0.10.2 From e916b80d2b1988e985abc0a1c85eca5b96c61f48 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Tue, 4 Jun 2013 15:44:00 +0100 Subject: inkern: iio_device_put after incorrect return/goto The code uses return foo; goto err_type; when instead the form should have been ret = foo; goto err_type; Here this causes a useful iio_device_put to be skipped. Signed-off-by: Joe Perches Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 795d100..dca4eed 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -124,7 +124,7 @@ static int __of_iio_channel_get(struct iio_channel *channel, channel->indio_dev = indio_dev; index = iiospec.args_count ? iiospec.args[0] : 0; if (index >= indio_dev->num_channels) { - return -EINVAL; + err = -EINVAL; goto err_put; } channel->channel = &indio_dev->channels[index]; -- cgit v0.10.2 From 68c315bb951d94210c43c52166d326f9c26f7ce8 Mon Sep 17 00:00:00 2001 From: Peter Crosthwaite Date: Tue, 4 Jun 2013 16:02:34 +0200 Subject: spi: spi-xilinx: Remove ISR race condition The ISR currently consumes the rx buffer data and re-enables transmission from within interrupt context. This is bad because if the interrupt occurs again before the ISR exits, the new interrupt will be erroneously cleared by the still completing ISR. Simplified the ISR by just setting the completion variable and exiting with no action. Then just looped the transmit functionality in xilinx_spi_txrx_bufs(). Signed-off-by: Peter Crosthwaite Signed-off-by: Michal Simek Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index e1d7696..34d18dc 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -267,7 +267,6 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) { struct xilinx_spi *xspi = spi_master_get_devdata(spi->master); u32 ipif_ier; - u16 cr; /* We get here with transmitter inhibited */ @@ -276,7 +275,6 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) xspi->remaining_bytes = t->len; INIT_COMPLETION(xspi->done); - xilinx_spi_fill_tx_fifo(xspi); /* Enable the transmit empty interrupt, which we use to determine * progress on the transmission. @@ -285,12 +283,41 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) xspi->write_fn(ipif_ier | XSPI_INTR_TX_EMPTY, xspi->regs + XIPIF_V123B_IIER_OFFSET); - /* Start the transfer by not inhibiting the transmitter any longer */ - cr = xspi->read_fn(xspi->regs + XSPI_CR_OFFSET) & - ~XSPI_CR_TRANS_INHIBIT; - xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET); + for (;;) { + u16 cr; + u8 sr; + + xilinx_spi_fill_tx_fifo(xspi); + + /* Start the transfer by not inhibiting the transmitter any + * longer + */ + cr = xspi->read_fn(xspi->regs + XSPI_CR_OFFSET) & + ~XSPI_CR_TRANS_INHIBIT; + xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET); + + wait_for_completion(&xspi->done); + + /* A transmit has just completed. Process received data and + * check for more data to transmit. Always inhibit the + * transmitter while the Isr refills the transmit register/FIFO, + * or make sure it is stopped if we're done. + */ + cr = xspi->read_fn(xspi->regs + XSPI_CR_OFFSET); + xspi->write_fn(cr | XSPI_CR_TRANS_INHIBIT, + xspi->regs + XSPI_CR_OFFSET); + + /* Read out all the data from the Rx FIFO */ + sr = xspi->read_fn(xspi->regs + XSPI_SR_OFFSET); + while ((sr & XSPI_SR_RX_EMPTY_MASK) == 0) { + xspi->rx_fn(xspi); + sr = xspi->read_fn(xspi->regs + XSPI_SR_OFFSET); + } - wait_for_completion(&xspi->done); + /* See if there is more data to send */ + if (!xspi->remaining_bytes > 0) + break; + } /* Disable the transmit empty interrupt */ xspi->write_fn(ipif_ier, xspi->regs + XIPIF_V123B_IIER_OFFSET); @@ -314,38 +341,7 @@ static irqreturn_t xilinx_spi_irq(int irq, void *dev_id) xspi->write_fn(ipif_isr, xspi->regs + XIPIF_V123B_IISR_OFFSET); if (ipif_isr & XSPI_INTR_TX_EMPTY) { /* Transmission completed */ - u16 cr; - u8 sr; - - /* A transmit has just completed. Process received data and - * check for more data to transmit. Always inhibit the - * transmitter while the Isr refills the transmit register/FIFO, - * or make sure it is stopped if we're done. - */ - cr = xspi->read_fn(xspi->regs + XSPI_CR_OFFSET); - xspi->write_fn(cr | XSPI_CR_TRANS_INHIBIT, - xspi->regs + XSPI_CR_OFFSET); - - /* Read out all the data from the Rx FIFO */ - sr = xspi->read_fn(xspi->regs + XSPI_SR_OFFSET); - while ((sr & XSPI_SR_RX_EMPTY_MASK) == 0) { - xspi->rx_fn(xspi); - sr = xspi->read_fn(xspi->regs + XSPI_SR_OFFSET); - } - - /* See if there is more data to send */ - if (xspi->remaining_bytes > 0) { - xilinx_spi_fill_tx_fifo(xspi); - /* Start the transfer by not inhibiting the - * transmitter any longer - */ - xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET); - } else { - /* No more data to send. - * Indicate the transfer is completed. - */ - complete(&xspi->done); - } + complete(&xspi->done); } return IRQ_HANDLED; -- cgit v0.10.2 From 2eb3a81eef0510511a3211bb3da560f446a8c8de Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Mon, 3 Jun 2013 14:30:00 +0100 Subject: iio: frequency: ad4350: Fix bug / typo in mask Signed-off-by: Michael Hennerich Reviewed-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c index a884252..e76d4ac 100644 --- a/drivers/iio/frequency/adf4350.c +++ b/drivers/iio/frequency/adf4350.c @@ -212,7 +212,7 @@ static int adf4350_set_freq(struct adf4350_state *st, unsigned long long freq) (pdata->r2_user_settings & (ADF4350_REG2_PD_POLARITY_POS | ADF4350_REG2_LDP_6ns | ADF4350_REG2_LDF_INT_N | ADF4350_REG2_CHARGE_PUMP_CURR_uA(5000) | - ADF4350_REG2_MUXOUT(0x7) | ADF4350_REG2_NOISE_MODE(0x9))); + ADF4350_REG2_MUXOUT(0x7) | ADF4350_REG2_NOISE_MODE(0x3))); st->regs[ADF4350_REG3] = pdata->r3_user_settings & (ADF4350_REG3_12BIT_CLKDIV(0xFFF) | -- cgit v0.10.2 From 6c5d4c96f979611f0165dc825af9e1cea8dd35b9 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Mon, 3 Jun 2013 09:04:00 +0100 Subject: iio:inkern: Fix typo/bug in convert raw to processed. Signed-off-by: Michael Hennerich Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index dca4eed..98ddc32 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -450,7 +450,7 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan, s64 raw64 = raw; int ret; - ret = iio_channel_read(chan, &offset, NULL, IIO_CHAN_INFO_SCALE); + ret = iio_channel_read(chan, &offset, NULL, IIO_CHAN_INFO_OFFSET); if (ret == 0) raw64 += offset; -- cgit v0.10.2 From bc2bfffc3866e8c87dde19d5619262a810a51ed8 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Sun, 26 May 2013 17:59:20 -0700 Subject: spi: hspi: fixup long delay time Current HSPI driver is using msleep(20) on hspi_status_check_timeout(), but it was too long delay for SPI device. Bock-W board SPI access was too slow without this patch. This patch uses udelay(10) for it. Tested-by: Yusuke Goda Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c index 60cfae5..eab593e 100644 --- a/drivers/spi/spi-sh-hspi.c +++ b/drivers/spi/spi-sh-hspi.c @@ -89,7 +89,7 @@ static int hspi_status_check_timeout(struct hspi_priv *hspi, u32 mask, u32 val) if ((mask & hspi_read(hspi, SPSR)) == val) return 0; - msleep(20); + udelay(10); } dev_err(hspi->dev, "timeout\n"); -- cgit v0.10.2 From a1c6693a50391683e7f5787bb027b1aae1afbedb Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Tue, 4 Jun 2013 05:13:26 +0000 Subject: net/mlx4_en: Fix adaptive moderation cq update When turning on adaptive_rx under adaptive moderation, the CQ's moderation count wasn't updated according to rx_frames which resulted in too many interrupts and bandwidth drop. Signed-off-by: Sagi Grimberg Signed-off-by: Amir Vadai Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index b35f947..810aab0 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -1323,6 +1323,7 @@ static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) priv->last_moder_time[ring] = moder_time; cq = &priv->rx_cq[ring]; cq->moder_time = moder_time; + cq->moder_cnt = priv->rx_frames; err = mlx4_en_set_cq_moder(priv, cq); if (err) en_err(priv, "Failed modifying moderation for cq:%d\n", -- cgit v0.10.2 From 5efe5355f22fb9b7bb64d19809c0a75805e0ccb8 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Tue, 4 Jun 2013 05:13:27 +0000 Subject: net/mlx4_core: Return -EPROBE_DEFER when a VF is probed before PF is sufficiently initialized In the PF initialization, SRIOV is enabled before the PF is fully initialized. This allows the kernel to probe the newly-exposed VFs before the PF is ready to handle them (nested probes). Have the probe method return the -EPROBE_DEFER value in this situation (instead of the VF probe method retrying its initialization in a loop, and returning -EIO on failure). When -EPROBE_DEFER is returned by the VF probe method, the kernel itself will retry the probe after a suitable delay. Based upon a suggestion by Ben Hutchings Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index 1df56cc..0e572a5 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -222,8 +222,6 @@ static int mlx4_comm_cmd_poll(struct mlx4_dev *dev, u8 cmd, u16 param, * FLR process. The only non-zero result in the RESET command * is MLX4_DELAY_RESET_SLAVE*/ if ((MLX4_COMM_CMD_RESET == cmd)) { - mlx4_warn(dev, "Got slave FLRed from Communication" - " channel (ret:0x%x)\n", ret_from_pending); err = MLX4_DELAY_RESET_SLAVE; } else { mlx4_warn(dev, "Communication channel timed out\n"); diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 0d32a82..2f4a260 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -1290,7 +1290,6 @@ static int mlx4_init_slave(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); u64 dma = (u64) priv->mfunc.vhcr_dma; - int num_of_reset_retries = NUM_OF_RESET_RETRIES; int ret_from_reset = 0; u32 slave_read; u32 cmd_channel_ver; @@ -1304,18 +1303,10 @@ static int mlx4_init_slave(struct mlx4_dev *dev) * NUM_OF_RESET_RETRIES times before leaving.*/ if (ret_from_reset) { if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) { - msleep(SLEEP_TIME_IN_RESET); - while (ret_from_reset && num_of_reset_retries) { - mlx4_warn(dev, "slave is currently in the" - "middle of FLR. retrying..." - "(try num:%d)\n", - (NUM_OF_RESET_RETRIES - - num_of_reset_retries + 1)); - ret_from_reset = - mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, - 0, MLX4_COMM_TIME); - num_of_reset_retries = num_of_reset_retries - 1; - } + mlx4_warn(dev, "slave is currently in the " + "middle of FLR. Deferring probe.\n"); + mutex_unlock(&priv->cmd.slave_cmd_mutex); + return -EPROBE_DEFER; } else goto err; } @@ -1526,7 +1517,8 @@ static int mlx4_init_hca(struct mlx4_dev *dev) } else { err = mlx4_init_slave(dev); if (err) { - mlx4_err(dev, "Failed to initialize slave\n"); + if (err != -EPROBE_DEFER) + mlx4_err(dev, "Failed to initialize slave\n"); return err; } -- cgit v0.10.2 From ef96f7d46ad86625237da8a35e812bdf7896e640 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Tue, 4 Jun 2013 05:13:28 +0000 Subject: net/mlx4_en: Handle unassigned VF MAC address correctly When a VF sense they didn't get MAC address, use random one. This will address the case of administrator not assigning MAC to the VF through the PF OS APIs and keep udev happy. Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 810aab0..89c47ea 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2119,6 +2119,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, struct mlx4_en_priv *priv; int i; int err; + u64 mac_u64; dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), MAX_TX_RINGS, MAX_RX_RINGS); @@ -2192,10 +2193,17 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, dev->addr_len = ETH_ALEN; mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); if (!is_valid_ether_addr(dev->dev_addr)) { - en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", - priv->port, dev->dev_addr); - err = -EINVAL; - goto out; + if (mlx4_is_slave(priv->mdev->dev)) { + eth_hw_addr_random(dev); + en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); + mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr); + mdev->dev->caps.def_mac[priv->port] = mac_u64; + } else { + en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", + priv->port, dev->dev_addr); + err = -EINVAL; + goto out; + } } memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac)); -- cgit v0.10.2 From c418253f12c0a95c7cd894953644c7488899c9fd Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Tue, 4 Jun 2013 05:13:29 +0000 Subject: net/mlx4_core: Keep VF assigned MAC in the PF admin table MAC addresses assigned by the PF to VFs were not kept in the PF driver admin table. As a result, displaying the VF MACs from the PF interface to user space showed zero address where in fact the VF got non-zero address from the PF, fix that. Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c index 58a8e53..2c97901 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -840,12 +840,16 @@ int mlx4_QUERY_PORT_wrapper(struct mlx4_dev *dev, int slave, MLX4_CMD_NATIVE); if (!err && dev->caps.function != slave) { - /* set slave default_mac address */ - MLX4_GET(def_mac, outbox->buf, QUERY_PORT_MAC_OFFSET); - def_mac += slave << 8; /* if config MAC in DB use it */ if (priv->mfunc.master.vf_oper[slave].vport[vhcr->in_modifier].state.mac) def_mac = priv->mfunc.master.vf_oper[slave].vport[vhcr->in_modifier].state.mac; + else { + /* set slave default_mac address */ + MLX4_GET(def_mac, outbox->buf, QUERY_PORT_MAC_OFFSET); + def_mac += slave << 8; + priv->mfunc.master.vf_admin[slave].vport[vhcr->in_modifier].mac = def_mac; + } + MLX4_PUT(outbox->buf, def_mac, QUERY_PORT_MAC_OFFSET); /* get port type - currently only eth is enabled */ -- cgit v0.10.2 From 534c877928a16ae5f9776436a497109639bf67dc Mon Sep 17 00:00:00 2001 From: Gao feng Date: Sun, 2 Jun 2013 22:16:21 +0000 Subject: ipv6: assign rt6_info to inet6_ifaddr in init_loopback Commit 25fb6ca4ed9cad72f14f61629b68dc03c0d9713f "net IPv6 : Fix broken IPv6 routing table after loopback down-up" forgot to assign rt6_info to the inet6_ifaddr. When disable the net device, the rt6_info which allocated in init_loopback will not be destroied in __ipv6_ifa_notify. This will trigger the waring message below [23527.916091] unregister_netdevice: waiting for tap0 to become free. Usage count = 1 Reported-by: Arkadiusz Miskiewicz Signed-off-by: Gao feng Signed-off-by: David S. Miller diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index d1b2d80..1bbf744 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2658,8 +2658,10 @@ static void init_loopback(struct net_device *dev) sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, 0); /* Failure cases are ignored */ - if (!IS_ERR(sp_rt)) + if (!IS_ERR(sp_rt)) { + sp_ifa->rt = sp_rt; ip6_ins_rt(sp_rt); + } } read_unlock_bh(&idev->lock); } -- cgit v0.10.2 From e768fb292d362ff2742d843e346a10853bde68be Mon Sep 17 00:00:00 2001 From: Dmitry Kravkov Date: Sun, 2 Jun 2013 23:28:41 +0000 Subject: bnx2x: fix TCP offload for tunneling ipv4 over ipv6 FW was initialized with data from wrong header, this caused TSO packets have wrong IP csum. Signed-off-by: Dmitry Kravkov Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index be59ec4..e3fe1ce 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -3192,11 +3192,11 @@ static u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb) rc |= XMIT_CSUM_TCP; if (skb_is_gso_v6(skb)) { - rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6); + rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP); if (rc & XMIT_CSUM_ENC) rc |= XMIT_GSO_ENC_V6; } else if (skb_is_gso(skb)) { - rc |= (XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP); + rc |= (XMIT_GSO_V4 | XMIT_CSUM_TCP); if (rc & XMIT_CSUM_ENC) rc |= XMIT_GSO_ENC_V4; } @@ -3483,19 +3483,18 @@ static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb, { u16 hlen_w = 0; u8 outerip_off, outerip_len = 0; + /* from outer IP to transport */ hlen_w = (skb_inner_transport_header(skb) - skb_network_header(skb)) >> 1; /* transport len */ - if (xmit_type & XMIT_CSUM_TCP) - hlen_w += inner_tcp_hdrlen(skb) >> 1; - else - hlen_w += sizeof(struct udphdr) >> 1; + hlen_w += inner_tcp_hdrlen(skb) >> 1; pbd2->fw_ip_hdr_to_payload_w = hlen_w; - if (xmit_type & XMIT_CSUM_ENC_V4) { + /* outer IP header info */ + if (xmit_type & XMIT_CSUM_V4) { struct iphdr *iph = ip_hdr(skb); pbd2->fw_ip_csum_wo_len_flags_frag = bswab16(csum_fold((~iph->check) - -- cgit v0.10.2 From ff5b2fabf53426c15a5f041505687f94d1b2109f Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 3 Jun 2013 00:38:39 +0000 Subject: net: fec: add fallback to random MAC address If no valid MAC address could be obtained from the hardware, fall back to a randomly generated one. Signed-off-by: Pavel Machek Signed-off-by: Lucas Stach Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 85a0603..a667015 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -1038,6 +1038,18 @@ static void fec_get_mac(struct net_device *ndev) iap = &tmpaddr[0]; } + /* + * 5) random mac address + */ + if (!is_valid_ether_addr(iap)) { + /* Report it and use a random ethernet address instead */ + netdev_err(ndev, "Invalid MAC address: %pM\n", iap); + eth_hw_addr_random(ndev); + netdev_info(ndev, "Using random MAC address: %pM\n", + ndev->dev_addr); + return; + } + memcpy(ndev->dev_addr, iap, ETH_ALEN); /* Adjust MAC if using macaddr */ -- cgit v0.10.2 From 5b61ff43a774b9843402fb280fec6d700e1fe583 Mon Sep 17 00:00:00 2001 From: Roi Dayan Date: Wed, 8 May 2013 12:21:17 +0000 Subject: IB/iser: Fix device removal flow Change the code to destroy the "last opened" rdma_cm id after making sure we released all other objects (QP, CQs, PD, etc) associated with the IB device. Since iser accesses the IB device using the rdma_cm id, we need to free any objects that are related to the device that is associated with the rdma_cm id prior to destroying that id. When this isn't done, the low level driver that created this device can be unloaded before iser has a chance to free all the objects and a such a call may invoke code segment which isn't valid any more and crash. Cc: Sean Hefty Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index 5278916..f13cc22 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -292,10 +292,10 @@ out_err: } /** - * releases the FMR pool, QP and CMA ID objects, returns 0 on success, + * releases the FMR pool and QP objects, returns 0 on success, * -1 on failure */ -static int iser_free_ib_conn_res(struct iser_conn *ib_conn, int can_destroy_id) +static int iser_free_ib_conn_res(struct iser_conn *ib_conn) { int cq_index; BUG_ON(ib_conn == NULL); @@ -314,13 +314,9 @@ static int iser_free_ib_conn_res(struct iser_conn *ib_conn, int can_destroy_id) rdma_destroy_qp(ib_conn->cma_id); } - /* if cma handler context, the caller acts s.t the cma destroy the id */ - if (ib_conn->cma_id != NULL && can_destroy_id) - rdma_destroy_id(ib_conn->cma_id); ib_conn->fmr_pool = NULL; ib_conn->qp = NULL; - ib_conn->cma_id = NULL; kfree(ib_conn->page_vec); if (ib_conn->login_buf) { @@ -415,11 +411,16 @@ static void iser_conn_release(struct iser_conn *ib_conn, int can_destroy_id) list_del(&ib_conn->conn_list); mutex_unlock(&ig.connlist_mutex); iser_free_rx_descriptors(ib_conn); - iser_free_ib_conn_res(ib_conn, can_destroy_id); + iser_free_ib_conn_res(ib_conn); ib_conn->device = NULL; /* on EVENT_ADDR_ERROR there's no device yet for this conn */ if (device != NULL) iser_device_try_release(device); + /* if cma handler context, the caller actually destroy the id */ + if (ib_conn->cma_id != NULL && can_destroy_id) { + rdma_destroy_id(ib_conn->cma_id); + ib_conn->cma_id = NULL; + } iscsi_destroy_endpoint(ib_conn->ep); } -- cgit v0.10.2 From 28f292e879a6acf745005e75196fe8f7cc504103 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Wed, 8 May 2013 12:21:18 +0000 Subject: IB/iser: Add Mellanox copyright Add Mellanox copyright to the iser initiator source code which I maintain. Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index f19b099..2e84ef8 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -5,6 +5,7 @@ * Copyright (C) 2004 Alex Aizman * Copyright (C) 2005 Mike Christie * Copyright (c) 2005, 2006 Voltaire, Inc. All rights reserved. + * Copyright (c) 2013 Mellanox Technologies. All rights reserved. * maintained by openib-general@openib.org * * This software is available to you under a choice of one of two diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h index 06f578c..4f069c0 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.h +++ b/drivers/infiniband/ulp/iser/iscsi_iser.h @@ -8,6 +8,7 @@ * * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved. * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. + * Copyright (c) 2013 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c index a00ccd1..b6d81a8 100644 --- a/drivers/infiniband/ulp/iser/iser_initiator.c +++ b/drivers/infiniband/ulp/iser/iser_initiator.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved. + * Copyright (c) 2013 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c index 68ebb7f..7827baf 100644 --- a/drivers/infiniband/ulp/iser/iser_memory.c +++ b/drivers/infiniband/ulp/iser/iser_memory.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved. + * Copyright (c) 2013 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index f13cc22..2c4941d 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -1,6 +1,7 @@ /* * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved. * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. + * Copyright (c) 2013 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU -- cgit v0.10.2 From 1e65eb425b660ccd7c8d3ffb353512352690c67f Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Wed, 8 May 2013 12:21:19 +0000 Subject: MAINTAINERS: Add entry for iSCSI Extensions for RDMA (iSER) initiator Add entry for the iSER initiator driver and which is maintained by Or Gerlitz and Roi Dayan below the kernel InfiniBand subsystem. Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier diff --git a/MAINTAINERS b/MAINTAINERS index f35a259..8e0a847 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4448,6 +4448,16 @@ S: Maintained F: drivers/scsi/*iscsi* F: include/scsi/*iscsi* +ISCSI EXTENSIONS FOR RDMA (ISER) INITIATOR +M: Or Gerlitz +M: Roi Dayan +L: linux-rdma@vger.kernel.org +S: Supported +W: http://www.openfabrics.org +W: www.open-iscsi.org +Q: http://patchwork.kernel.org/project/linux-rdma/list/ +F: drivers/infiniband/ulp/iser + ISDN SUBSYSTEM M: Karsten Keil L: isdn4linux@listserv.isdn4linux.de (subscribers-only) -- cgit v0.10.2 From f3bdf34465307fc3f6967a9202a921e11505b2e6 Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Fri, 17 May 2013 12:40:32 +0000 Subject: IB/qib: Fix lockdep splat in qib_alloc_lkey() The following backtrace is reported with CONFIG_PROVE_RCU: drivers/infiniband/hw/qib/qib_keys.c:64 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 1 4 locks held by kworker/0:1/56: #0: (events){.+.+.+}, at: [] process_one_work+0x165/0x4a0 #1: ((&wfc.work)){+.+.+.}, at: [] process_one_work+0x165/0x4a0 #2: (device_mutex){+.+.+.}, at: [] ib_register_device+0x38/0x220 [ib_core] #3: (&(&dev->lk_table.lock)->rlock){......}, at: [] qib_alloc_lkey+0x3c/0x1b0 [ib_qib] stack backtrace: Pid: 56, comm: kworker/0:1 Not tainted 3.10.0-rc1+ #6 Call Trace: [] lockdep_rcu_suspicious+0xe5/0x130 [] qib_alloc_lkey+0x101/0x1b0 [ib_qib] [] qib_get_dma_mr+0xa6/0xd0 [ib_qib] [] ib_get_dma_mr+0x1a/0x50 [ib_core] [] ib_mad_port_open+0x12c/0x390 [ib_mad] [] ? trace_hardirqs_on_caller+0x105/0x190 [] ib_mad_init_device+0x52/0x110 [ib_mad] [] ? sl2vl_attr_show+0x30/0x30 [ib_qib] [] ib_register_device+0x1a9/0x220 [ib_core] [] qib_register_ib_device+0x735/0xa40 [ib_qib] [] ? mod_timer+0x118/0x220 [] qib_init_one+0x1e5/0x400 [ib_qib] [] local_pci_probe+0x4e/0x90 [] work_for_cpu_fn+0x18/0x30 [] process_one_work+0x1d6/0x4a0 [] ? process_one_work+0x165/0x4a0 [] worker_thread+0x119/0x370 [] ? manage_workers+0x180/0x180 [] kthread+0xee/0x100 [] ? __init_kthread_worker+0x70/0x70 [] ret_from_fork+0x7c/0xb0 [] ? __init_kthread_worker+0x70/0x70 Per Documentation/RCU/lockdep-splat.txt, the code now uses rcu_access_pointer() vs. rcu_dereference(). Reported-by: Jay Fenlason Reviewed-by: Dean Luick Signed-off-by: Mike Marciniszyn Signed-off-by: Roland Dreier diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c index 81c7b73..3b9afcc 100644 --- a/drivers/infiniband/hw/qib/qib_keys.c +++ b/drivers/infiniband/hw/qib/qib_keys.c @@ -61,7 +61,7 @@ int qib_alloc_lkey(struct qib_mregion *mr, int dma_region) if (dma_region) { struct qib_mregion *tmr; - tmr = rcu_dereference(dev->dma_mr); + tmr = rcu_access_pointer(dev->dma_mr); if (!tmr) { qib_get_mr(mr); rcu_assign_pointer(dev->dma_mr, mr); -- cgit v0.10.2 From 44dbc78ee43d5df0bbcd7f3ae6a0ba00ed261e95 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Mon, 3 Jun 2013 02:59:57 +0000 Subject: bnx2x: Fix bridged GSO for 57710/57711 chips It was recently found out that GSO on 57710/57711 was broken, due to packets being sent without a valid IP checksum. Commit 057cf65 "bnx2x: Fix GSO for 57710/57711 chips" partially fixed this issue, but failed to set the correct IP checksum when receiving GSO packets via bridges, as such packets enter bnx2x_tx_split() and the FW flags needed to calculate IP checksum were erroneously set in the incorrect buffer descriptor. This patch re-enables GSO in said scenario for 57710/57711 chips. Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index e3fe1ce..638e554 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -3817,8 +3817,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev) bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data, xmit_type); else - bnx2x_set_pbd_gso(skb, pbd_e1x, tx_start_bd, - xmit_type); + bnx2x_set_pbd_gso(skb, pbd_e1x, first_bd, xmit_type); } /* Set the PBD's parsing_data field if not zero -- cgit v0.10.2 From 3a5395b3d57b9e3836c755434c88f4590d5ea6f6 Mon Sep 17 00:00:00 2001 From: "Jens Renner \\(EFE\\)" Date: Mon, 3 Jun 2013 04:32:52 +0000 Subject: net: ethernet: xilinx_emaclite: set protocol selector bits when writing ANAR This patch sets the protocol selector bits (4:0) of the PHY's MII_ADVERTISE register (ANAR) when writing ADVERTISE_ALL. The protocol selector bits are indicating IEEE 803.3u support and are fixed / read-only on some PHYs. Not setting them correctly on others (like TI DP83630) makes the PHY fall back to 10M HDX mode which should be avoided. Tested for TI DP83630 PHY on Microblaze platform. Signed-off-by: Jens Renner Tested-by: Michal Simek Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c index 919b983..b7268b3 100644 --- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c +++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c @@ -946,7 +946,8 @@ static int xemaclite_open(struct net_device *dev) phy_write(lp->phy_dev, MII_CTRL1000, 0); /* Advertise only 10 and 100mbps full/half duplex speeds */ - phy_write(lp->phy_dev, MII_ADVERTISE, ADVERTISE_ALL); + phy_write(lp->phy_dev, MII_ADVERTISE, ADVERTISE_ALL | + ADVERTISE_CSMA); /* Restart auto negotiation */ bmcr = phy_read(lp->phy_dev, MII_BMCR); -- cgit v0.10.2 From 9bc297ea0622bb2a6b3abfa2fa84f0a3b86ef8c8 Mon Sep 17 00:00:00 2001 From: Nithin Sujir Date: Mon, 3 Jun 2013 09:19:34 +0000 Subject: tg3: Add read dma workaround for 5720 Commit 091f0ea30074bc43f9250961b3247af713024bc6 "tg3: Add New 5719 Read DMA workaround" added a workaround for TX DMA stall on the 5719. This workaround needs to be applied to the 5720 as well. Cc: stable@vger.kernel.org Reported-by: Roland Dreier Tested-by: Roland Dreier Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 1f2dd92..0f493c8 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -9468,6 +9468,14 @@ static void tg3_rss_write_indir_tbl(struct tg3 *tp) } } +static inline u32 tg3_lso_rd_dma_workaround_bit(struct tg3 *tp) +{ + if (tg3_asic_rev(tp) == ASIC_REV_5719) + return TG3_LSO_RD_DMA_TX_LENGTH_WA_5719; + else + return TG3_LSO_RD_DMA_TX_LENGTH_WA_5720; +} + /* tp->lock is held. */ static int tg3_reset_hw(struct tg3 *tp, bool reset_phy) { @@ -10153,16 +10161,17 @@ static int tg3_reset_hw(struct tg3 *tp, bool reset_phy) tw32_f(RDMAC_MODE, rdmac_mode); udelay(40); - if (tg3_asic_rev(tp) == ASIC_REV_5719) { + if (tg3_asic_rev(tp) == ASIC_REV_5719 || + tg3_asic_rev(tp) == ASIC_REV_5720) { for (i = 0; i < TG3_NUM_RDMA_CHANNELS; i++) { if (tr32(TG3_RDMA_LENGTH + (i << 2)) > TG3_MAX_MTU(tp)) break; } if (i < TG3_NUM_RDMA_CHANNELS) { val = tr32(TG3_LSO_RD_DMA_CRPTEN_CTRL); - val |= TG3_LSO_RD_DMA_TX_LENGTH_WA; + val |= tg3_lso_rd_dma_workaround_bit(tp); tw32(TG3_LSO_RD_DMA_CRPTEN_CTRL, val); - tg3_flag_set(tp, 5719_RDMA_BUG); + tg3_flag_set(tp, 5719_5720_RDMA_BUG); } } @@ -10526,15 +10535,15 @@ static void tg3_periodic_fetch_stats(struct tg3 *tp) TG3_STAT_ADD32(&sp->tx_ucast_packets, MAC_TX_STATS_UCAST); TG3_STAT_ADD32(&sp->tx_mcast_packets, MAC_TX_STATS_MCAST); TG3_STAT_ADD32(&sp->tx_bcast_packets, MAC_TX_STATS_BCAST); - if (unlikely(tg3_flag(tp, 5719_RDMA_BUG) && + if (unlikely(tg3_flag(tp, 5719_5720_RDMA_BUG) && (sp->tx_ucast_packets.low + sp->tx_mcast_packets.low + sp->tx_bcast_packets.low) > TG3_NUM_RDMA_CHANNELS)) { u32 val; val = tr32(TG3_LSO_RD_DMA_CRPTEN_CTRL); - val &= ~TG3_LSO_RD_DMA_TX_LENGTH_WA; + val &= ~tg3_lso_rd_dma_workaround_bit(tp); tw32(TG3_LSO_RD_DMA_CRPTEN_CTRL, val); - tg3_flag_clear(tp, 5719_RDMA_BUG); + tg3_flag_clear(tp, 5719_5720_RDMA_BUG); } TG3_STAT_ADD32(&sp->rx_octets, MAC_RX_STATS_OCTETS); diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h index 9b2d3ac..ff6e30e 100644 --- a/drivers/net/ethernet/broadcom/tg3.h +++ b/drivers/net/ethernet/broadcom/tg3.h @@ -1422,7 +1422,8 @@ #define TG3_LSO_RD_DMA_CRPTEN_CTRL 0x00004910 #define TG3_LSO_RD_DMA_CRPTEN_CTRL_BLEN_BD_4K 0x00030000 #define TG3_LSO_RD_DMA_CRPTEN_CTRL_BLEN_LSO_4K 0x000c0000 -#define TG3_LSO_RD_DMA_TX_LENGTH_WA 0x02000000 +#define TG3_LSO_RD_DMA_TX_LENGTH_WA_5719 0x02000000 +#define TG3_LSO_RD_DMA_TX_LENGTH_WA_5720 0x00200000 /* 0x4914 --> 0x4be0 unused */ #define TG3_NUM_RDMA_CHANNELS 4 @@ -3059,7 +3060,7 @@ enum TG3_FLAGS { TG3_FLAG_APE_HAS_NCSI, TG3_FLAG_TX_TSTAMP_EN, TG3_FLAG_4K_FIFO_LIMIT, - TG3_FLAG_5719_RDMA_BUG, + TG3_FLAG_5719_5720_RDMA_BUG, TG3_FLAG_RESET_TASK_PENDING, TG3_FLAG_PTP_CAPABLE, TG3_FLAG_5705_PLUS, -- cgit v0.10.2 From 5e71d9d77c07fa7d4c42287a177f7b738d0cd4b9 Mon Sep 17 00:00:00 2001 From: Pablo Neira Date: Mon, 3 Jun 2013 09:28:43 +0000 Subject: net: fix sk_buff head without data area Eric Dumazet spotted that we have to check skb->head instead of skb->data as skb->head points to the beginning of the data area of the skbuff. Similarly, we have to initialize the skb->head pointer, not skb->data in __alloc_skb_head. After this fix, netlink crashes in the release path of the sk_buff, so let's fix that as well. This bug was introduced in (0ebd0ac net: add function to allocate sk_buff head without data area). Reported-by: Eric Dumazet Signed-off-by: Pablo Neira Ayuso Signed-off-by: David S. Miller diff --git a/net/core/skbuff.c b/net/core/skbuff.c index af9185d..cfd777b 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -195,7 +195,7 @@ struct sk_buff *__alloc_skb_head(gfp_t gfp_mask, int node) * the tail pointer in struct sk_buff! */ memset(skb, 0, offsetof(struct sk_buff, tail)); - skb->data = NULL; + skb->head = NULL; skb->truesize = sizeof(struct sk_buff); atomic_set(&skb->users, 1); @@ -611,7 +611,7 @@ static void skb_release_head_state(struct sk_buff *skb) static void skb_release_all(struct sk_buff *skb) { skb_release_head_state(skb); - if (likely(skb->data)) + if (likely(skb->head)) skb_release_data(skb); } diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 12ac6b4..d0b3dd6 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -747,7 +747,7 @@ static void netlink_skb_destructor(struct sk_buff *skb) atomic_dec(&ring->pending); sock_put(sk); - skb->data = NULL; + skb->head = NULL; } #endif if (skb->sk != NULL) -- cgit v0.10.2 From 5343a7f8be11951cb3095b91e8e4eb506cfacc0f Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 4 Jun 2013 07:11:48 +0000 Subject: net_sched: htb: do not mix 1ns and 64ns time units commit 56b765b79 ("htb: improved accuracy at high rates") added another regression for low rates, because it mixes 1ns and 64ns time units. So the maximum delay (mbuffer) was not 60 second, but 937 ms. Lets convert all time fields to 1ns as 64bit arches are becoming the norm. Reported-by: Jesper Dangaard Brouer Signed-off-by: Eric Dumazet Tested-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index f87fb85..adaedd7 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -109,7 +109,7 @@ struct htb_class { } un; struct rb_node node[TC_HTB_NUMPRIO]; /* node for self or feed tree */ struct rb_node pq_node; /* node for event queue */ - psched_time_t pq_key; + s64 pq_key; int prio_activity; /* for which prios are we active */ enum htb_cmode cmode; /* current mode of the class */ @@ -121,10 +121,10 @@ struct htb_class { /* token bucket parameters */ struct psched_ratecfg rate; struct psched_ratecfg ceil; - s64 buffer, cbuffer; /* token bucket depth/rate */ - psched_tdiff_t mbuffer; /* max wait time */ - s64 tokens, ctokens; /* current number of tokens */ - psched_time_t t_c; /* checkpoint time */ + s64 buffer, cbuffer; /* token bucket depth/rate */ + s64 mbuffer; /* max wait time */ + s64 tokens, ctokens; /* current number of tokens */ + s64 t_c; /* checkpoint time */ }; struct htb_sched { @@ -141,15 +141,15 @@ struct htb_sched { struct rb_root wait_pq[TC_HTB_MAXDEPTH]; /* time of nearest event per level (row) */ - psched_time_t near_ev_cache[TC_HTB_MAXDEPTH]; + s64 near_ev_cache[TC_HTB_MAXDEPTH]; int defcls; /* class where unclassified flows go to */ /* filters for qdisc itself */ struct tcf_proto *filter_list; - int rate2quantum; /* quant = rate / rate2quantum */ - psched_time_t now; /* cached dequeue time */ + int rate2quantum; /* quant = rate / rate2quantum */ + s64 now; /* cached dequeue time */ struct qdisc_watchdog watchdog; /* non shaped skbs; let them go directly thru */ @@ -664,8 +664,8 @@ static void htb_charge_class(struct htb_sched *q, struct htb_class *cl, * next pending event (0 for no event in pq, q->now for too many events). * Note: Applied are events whose have cl->pq_key <= q->now. */ -static psched_time_t htb_do_events(struct htb_sched *q, int level, - unsigned long start) +static s64 htb_do_events(struct htb_sched *q, int level, + unsigned long start) { /* don't run for longer than 2 jiffies; 2 is used instead of * 1 to simplify things when jiffy is going to be incremented @@ -857,7 +857,7 @@ static struct sk_buff *htb_dequeue(struct Qdisc *sch) struct sk_buff *skb; struct htb_sched *q = qdisc_priv(sch); int level; - psched_time_t next_event; + s64 next_event; unsigned long start_at; /* try to dequeue direct packets as high prio (!) to minimize cpu work */ @@ -880,7 +880,7 @@ ok: for (level = 0; level < TC_HTB_MAXDEPTH; level++) { /* common case optimization - skip event handler quickly */ int m; - psched_time_t event; + s64 event; if (q->now >= q->near_ev_cache[level]) { event = htb_do_events(q, level, start_at); @@ -1117,8 +1117,8 @@ htb_dump_class_stats(struct Qdisc *sch, unsigned long arg, struct gnet_dump *d) if (!cl->level && cl->un.leaf.q) cl->qstats.qlen = cl->un.leaf.q->q.qlen; - cl->xstats.tokens = cl->tokens; - cl->xstats.ctokens = cl->ctokens; + cl->xstats.tokens = PSCHED_NS2TICKS(cl->tokens); + cl->xstats.ctokens = PSCHED_NS2TICKS(cl->ctokens); if (gnet_stats_copy_basic(d, &cl->bstats) < 0 || gnet_stats_copy_rate_est(d, NULL, &cl->rate_est) < 0 || @@ -1200,7 +1200,7 @@ static void htb_parent_to_leaf(struct htb_sched *q, struct htb_class *cl, parent->un.leaf.q = new_q ? new_q : &noop_qdisc; parent->tokens = parent->buffer; parent->ctokens = parent->cbuffer; - parent->t_c = psched_get_time(); + parent->t_c = ktime_to_ns(ktime_get()); parent->cmode = HTB_CAN_SEND; } @@ -1417,8 +1417,8 @@ static int htb_change_class(struct Qdisc *sch, u32 classid, /* set class to be in HTB_CAN_SEND state */ cl->tokens = PSCHED_TICKS2NS(hopt->buffer); cl->ctokens = PSCHED_TICKS2NS(hopt->cbuffer); - cl->mbuffer = 60 * PSCHED_TICKS_PER_SEC; /* 1min */ - cl->t_c = psched_get_time(); + cl->mbuffer = 60ULL * NSEC_PER_SEC; /* 1min */ + cl->t_c = ktime_to_ns(ktime_get()); cl->cmode = HTB_CAN_SEND; /* attach to the hash list and parent's family */ -- cgit v0.10.2 From beba44b17d572ebb4909c1327360918ee4d89e43 Mon Sep 17 00:00:00 2001 From: Alexander Stein Date: Mon, 20 May 2013 19:14:00 +0200 Subject: drm/nv84/disp: Fix HDMI audio regression Code refactoring in commit 8e9e3d2deacc460fbb8a4691140318f6e85e6891 (drm/nv84/disp: move hdmi control into core) disabled HDMI audio on my nv84 by removing too much old code without adding it in the new one. This patch adds the missing code within the new code layout resulting in HDMI audio working again. It should work on any HDMI head, but due to lacking ahrdware I could only test the (1st) one. It also might be possible that similar code is needed for nva3, which I can't test. Signed-off-by: Alexander Stein Signed-off-by: Ben Skeggs diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/hdminv84.c b/drivers/gpu/drm/nouveau/core/engine/disp/hdminv84.c index 0d36bdc..7fdade6 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/hdminv84.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/hdminv84.c @@ -55,6 +55,10 @@ nv84_hdmi_ctrl(struct nv50_disp_priv *priv, int head, int or, u32 data) nv_wr32(priv, 0x616510 + hoff, 0x00000000); nv_mask(priv, 0x616500 + hoff, 0x00000001, 0x00000001); + nv_mask(priv, 0x6165d0 + hoff, 0x00070001, 0x00010001); /* SPARE, HW_CTS */ + nv_mask(priv, 0x616568 + hoff, 0x00010101, 0x00000000); /* ACR_CTRL, ?? */ + nv_mask(priv, 0x616578 + hoff, 0x80000000, 0x80000000); /* ACR_0441_ENABLE */ + /* ??? */ nv_mask(priv, 0x61733c, 0x00100000, 0x00100000); /* RESETF */ nv_mask(priv, 0x61733c, 0x10000000, 0x10000000); /* LOOKUP_EN */ -- cgit v0.10.2 From 89e033a4bc688bc6631c6de8b66d7f26f8e0652b Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 3 Jun 2013 15:43:30 +1000 Subject: drm/nv50-nv84/fifo: fix resume regression introduced by playlist race fix Reported-by: Maarten Maathuis Reported-by: Sven Joachim Reported-by: Konrad Rzeszutek Wilk Signed-off-by: Ben Skeggs diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c index 89bf459..e9b8217 100644 --- a/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c @@ -40,14 +40,13 @@ * FIFO channel objects ******************************************************************************/ -void -nv50_fifo_playlist_update(struct nv50_fifo_priv *priv) +static void +nv50_fifo_playlist_update_locked(struct nv50_fifo_priv *priv) { struct nouveau_bar *bar = nouveau_bar(priv); struct nouveau_gpuobj *cur; int i, p; - mutex_lock(&nv_subdev(priv)->mutex); cur = priv->playlist[priv->cur_playlist]; priv->cur_playlist = !priv->cur_playlist; @@ -61,6 +60,13 @@ nv50_fifo_playlist_update(struct nv50_fifo_priv *priv) nv_wr32(priv, 0x0032f4, cur->addr >> 12); nv_wr32(priv, 0x0032ec, p); nv_wr32(priv, 0x002500, 0x00000101); +} + +void +nv50_fifo_playlist_update(struct nv50_fifo_priv *priv) +{ + mutex_lock(&nv_subdev(priv)->mutex); + nv50_fifo_playlist_update_locked(priv); mutex_unlock(&nv_subdev(priv)->mutex); } @@ -489,7 +495,7 @@ nv50_fifo_init(struct nouveau_object *object) for (i = 0; i < 128; i++) nv_wr32(priv, 0x002600 + (i * 4), 0x00000000); - nv50_fifo_playlist_update(priv); + nv50_fifo_playlist_update_locked(priv); nv_wr32(priv, 0x003200, 0x00000001); nv_wr32(priv, 0x003250, 0x00000001); -- cgit v0.10.2 From ea9197cc323839ef3d5280c0453b2c622caa6bc7 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 3 Jun 2013 16:07:06 +1000 Subject: drm/nv50/disp: force dac power state during load detect MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit fdo#64904 Reported-by: Gerhard Bräunlich Signed-off-by: Ben Skeggs diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c index d0817d9..a60a5ac 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c @@ -50,11 +50,15 @@ nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval) { const u32 doff = (or * 0x800); int load = -EINVAL; + nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80150000); + nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval); udelay(9500); nv_wr32(priv, 0x61a00c + doff, 0x80000000); load = (nv_rd32(priv, 0x61a00c + doff) & 0x38000000) >> 27; nv_wr32(priv, 0x61a00c + doff, 0x00000000); + nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80550000); + nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); return load; } diff --git a/drivers/gpu/drm/nouveau/core/include/core/class.h b/drivers/gpu/drm/nouveau/core/include/core/class.h index 0a393f7..5a5961b 100644 --- a/drivers/gpu/drm/nouveau/core/include/core/class.h +++ b/drivers/gpu/drm/nouveau/core/include/core/class.h @@ -218,7 +218,7 @@ struct nv04_display_class { #define NV50_DISP_DAC_PWR_STATE 0x00000040 #define NV50_DISP_DAC_PWR_STATE_ON 0x00000000 #define NV50_DISP_DAC_PWR_STATE_OFF 0x00000040 -#define NV50_DISP_DAC_LOAD 0x0002000c +#define NV50_DISP_DAC_LOAD 0x00020100 #define NV50_DISP_DAC_LOAD_VALUE 0x00000007 #define NV50_DISP_PIOR_MTHD 0x00030000 -- cgit v0.10.2 From d40ee48acde16894fb3b241d7e896d5fa84e0f10 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 3 Jun 2013 16:40:14 +1000 Subject: drm/nv50/kms: use dac loadval from vbios, where it's available Regression from merging the old nv50/nvd9 code together, and may be needed to fully fix fdo#64904. The value is ignored completely by the hardware starting from nva3. Reported-by: Emil Velikov Signed-off-by: Ben Skeggs diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 3258873..e843cf8 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -1554,7 +1554,9 @@ nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector) { struct nv50_disp *disp = nv50_disp(encoder->dev); int ret, or = nouveau_encoder(encoder)->or; - u32 load = 0; + u32 load = nouveau_drm(encoder->dev)->vbios.dactestval; + if (load == 0) + load = 340; ret = nv_exec(disp->core, NV50_DISP_DAC_LOAD + or, &load, sizeof(load)); if (ret || load != 7) -- cgit v0.10.2 From 11e7064f35bb87da8f427d1aa4bbd8b7473a3993 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 5 Jun 2013 08:35:26 +0200 Subject: ALSA: usb-audio - Fix invalid volume resolution on Logitech HD webcam c270 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit USB audio driver spews an error message when probing Logitech HD webcam c270: ALSA mixer.c:1300 usb_audio: Warning! Unlikely big volume range (=6144), cval->res is probably wrong. ALSA mixer.c:1304 usb_audio: [5] FU [Mic Capture Volume] ch = 1, val = 1536/7680/1 Obviously the device needs a fixed volume resolution (cval->res = 384) like other Logitech devices. Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=821735 Reported-and-tested-by: Cristian Rodríguez Cc: Signed-off-by: Takashi Iwai diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index ca4739c..e5c7f9f 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -886,6 +886,7 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval, case USB_ID(0x046d, 0x0808): case USB_ID(0x046d, 0x0809): case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ + case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ case USB_ID(0x046d, 0x0991): /* Most audio usb devices lie about volume resolution. * Most Logitech webcams have res = 384. -- cgit v0.10.2 From bc5abcf7e411b889f73ea2a90439071a0f451011 Mon Sep 17 00:00:00 2001 From: Tyler Hicks Date: Tue, 4 Jun 2013 10:24:56 -0700 Subject: eCryptfs: Check return of filemap_write_and_wait during fsync Error out of ecryptfs_fsync() if filemap_write_and_wait() fails. Signed-off-by: Tyler Hicks Cc: Paul Taysom Cc: Olof Johansson Cc: stable@vger.kernel.org # v3.6+ diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index 16f509d..a7abbea 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -295,7 +295,12 @@ static int ecryptfs_release(struct inode *inode, struct file *file) static int ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync) { - filemap_write_and_wait(file->f_mapping); + int rc; + + rc = filemap_write_and_wait(file->f_mapping); + if (rc) + return rc; + return vfs_fsync(ecryptfs_file_to_lower(file), datasync); } -- cgit v0.10.2 From 3ef91f21a66826cf1003bb7b3c51ac2de4c28182 Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Sun, 2 Jun 2013 19:51:47 +0300 Subject: crypto: twofish - disable AVX2 implementation It appears that the performance of 'vpgatherdd' is suboptimal for this kind of workload (tested on Core i5-4570) and causes twofish_avx2 to be significantly slower than twofish_avx. So disable the AVX2 implementation to avoid performance regressions. Signed-off-by: Jussi Kivilinna Signed-off-by: Herbert Xu diff --git a/crypto/Kconfig b/crypto/Kconfig index 622d8a4..27720af 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1299,6 +1299,7 @@ config CRYPTO_TWOFISH_AVX_X86_64 config CRYPTO_TWOFISH_AVX2_X86_64 tristate "Twofish cipher algorithm (x86_64/AVX2)" depends on X86 && 64BIT + depends on BROKEN select CRYPTO_ALGAPI select CRYPTO_CRYPTD select CRYPTO_ABLK_HELPER_X86 -- cgit v0.10.2 From edb7c7cdba90c3fb2339e51c15d21982bdf72fdc Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Sun, 2 Jun 2013 19:51:52 +0300 Subject: crypto: blowfish - disable AVX2 implementation It appears that the performance of 'vpgatherdd' is suboptimal for this kind of workload (tested on Core i5-4570) and causes blowfish-avx2 to be significantly slower than blowfish-amd64. So disable the AVX2 implementation to avoid performance regressions. Signed-off-by: Jussi Kivilinna Signed-off-by: Herbert Xu diff --git a/crypto/Kconfig b/crypto/Kconfig index 27720af..bf8148e 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -823,6 +823,7 @@ config CRYPTO_BLOWFISH_X86_64 config CRYPTO_BLOWFISH_AVX2_X86_64 tristate "Blowfish cipher algorithm (x86_64/AVX2)" depends on X86 && 64BIT + depends on BROKEN select CRYPTO_ALGAPI select CRYPTO_CRYPTD select CRYPTO_ABLK_HELPER_X86 -- cgit v0.10.2 From 68be0b1ae355c6deb11326df6758f80154f44cf0 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 3 Jun 2013 23:57:37 +0200 Subject: crypto: sahara - fix building as module The sahara crypto driver has an incorrect MODULE_DEVICE_TABLE, which prevents us from actually building this driver as a loadable module. sahara_dt_ids is a of_device_id array, so we have to use MODULE_DEVICE_TABLE(of, ...). Signed-off-by: Arnd Bergmann Cc: Javier Martin Cc: Herbert Xu Signed-off-by: Herbert Xu diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c index a97bb6c..c3dc1c0 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -863,7 +863,7 @@ static struct of_device_id sahara_dt_ids[] = { { .compatible = "fsl,imx27-sahara" }, { /* sentinel */ } }; -MODULE_DEVICE_TABLE(platform, sahara_dt_ids); +MODULE_DEVICE_TABLE(of, sahara_dt_ids); static int sahara_probe(struct platform_device *pdev) { -- cgit v0.10.2 From 066a1a5fca0e188c41636d0874ab7495f24f595b Mon Sep 17 00:00:00 2001 From: James Hogan Date: Wed, 22 May 2013 12:29:22 +0100 Subject: KVM: add kvm_para_available to asm-generic/kvm_para.h According to include/uapi/linux/kvm_para.h architectures should define kvm_para_available, so add an implementation to asm-generic/kvm_para.h which just returns false. This fixes intel8x0.c build failure on mips with KVM enabled. Signed-off-by: James Hogan Cc: Marcelo Tosatti Cc: Gleb Natapov Cc: Arnd Bergmann Signed-off-by: Gleb Natapov diff --git a/include/asm-generic/kvm_para.h b/include/asm-generic/kvm_para.h index 9d96605..fa25bec 100644 --- a/include/asm-generic/kvm_para.h +++ b/include/asm-generic/kvm_para.h @@ -18,4 +18,9 @@ static inline unsigned int kvm_arch_para_features(void) return 0; } +static inline bool kvm_para_available(void) +{ + return false; +} + #endif -- cgit v0.10.2 From 991a6b735ff47710769545b11e481bb140b2e6f7 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sat, 1 Jun 2013 15:31:40 +0200 Subject: netfilter: nfnetlink_acct: fix incomplete dumping of objects Fix broken incomplete object dumping if the list of objects does not fit into one single netlink message. Reported-by: Gabriel Lazar Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c index dc3fd5d..c7b6d46 100644 --- a/net/netfilter/nfnetlink_acct.c +++ b/net/netfilter/nfnetlink_acct.c @@ -149,9 +149,12 @@ nfnl_acct_dump(struct sk_buff *skb, struct netlink_callback *cb) rcu_read_lock(); list_for_each_entry_rcu(cur, &nfnl_acct_list, head) { - if (last && cur != last) - continue; + if (last) { + if (cur != last) + continue; + last = NULL; + } if (nfnl_acct_fill_info(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NFNL_MSG_TYPE(cb->nlh->nlmsg_type), -- cgit v0.10.2 From 37bc4f8dfa72fb43b84381abca39cfdbbc8ff2df Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sat, 1 Jun 2013 15:36:02 +0200 Subject: netfilter: nfnetlink_cttimeout: fix incomplete dumping of objects Fix broken incomplete object dumping if the list of objects does not fit into one single netlink message. Reported-by: Gabriel Lazar Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c index 701c88a..65074df 100644 --- a/net/netfilter/nfnetlink_cttimeout.c +++ b/net/netfilter/nfnetlink_cttimeout.c @@ -220,9 +220,12 @@ ctnl_timeout_dump(struct sk_buff *skb, struct netlink_callback *cb) rcu_read_lock(); list_for_each_entry_rcu(cur, &cttimeout_list, head) { - if (last && cur != last) - continue; + if (last) { + if (cur != last) + continue; + last = NULL; + } if (ctnl_timeout_fill_info(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NFNL_MSG_TYPE(cb->nlh->nlmsg_type), -- cgit v0.10.2 From 8673b83bf2f013379453b4779047bf3c6ae387e4 Mon Sep 17 00:00:00 2001 From: Ross Lagerwall Date: Fri, 31 May 2013 20:45:17 +0100 Subject: acpi-cpufreq: set current frequency based on target P-State Commit 4b31e774 (Always set P-state on initialization) fixed bug #4634 and caused the driver to always set the target P-State at least once since the initial P-State may not be the desired one. Commit 5a1c0228 (cpufreq: Avoid calling cpufreq driver's target() routine if target_freq == policy->cur) caused a regression in this behavior. This fixes the regression by setting policy->cur based on the CPU's target frequency rather than the CPU's current reported frequency (which may be different). This means that the P-State will be set initially if the CPU's target frequency is different from the governor's target frequency. This fixes an issue where setting the default governor to performance wouldn't correctly enable turbo mode on all cores. Signed-off-by: Ross Lagerwall Reviewed-by: Len Brown Acked-by: Viresh Kumar Cc: 3.8+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 11b8b4b..edc089e 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -347,11 +347,11 @@ static u32 get_cur_val(const struct cpumask *mask) switch (per_cpu(acfreq_data, cpumask_first(mask))->cpu_feature) { case SYSTEM_INTEL_MSR_CAPABLE: cmd.type = SYSTEM_INTEL_MSR_CAPABLE; - cmd.addr.msr.reg = MSR_IA32_PERF_STATUS; + cmd.addr.msr.reg = MSR_IA32_PERF_CTL; break; case SYSTEM_AMD_MSR_CAPABLE: cmd.type = SYSTEM_AMD_MSR_CAPABLE; - cmd.addr.msr.reg = MSR_AMD_PERF_STATUS; + cmd.addr.msr.reg = MSR_AMD_PERF_CTL; break; case SYSTEM_IO_CAPABLE: cmd.type = SYSTEM_IO_CAPABLE; -- cgit v0.10.2 From a98d4f64a20b2b88697e7e08c871144a7e3f0ec4 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 3 Jun 2013 02:08:39 +0000 Subject: ACPI / APEI: fix error return code in ghes_probe() Fix to return a negative error code in the acpi_gsi_to_irq() and request_irq() error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Reviewed-by: Huang Ying Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index d668a8a..ea750ed 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -917,13 +917,14 @@ static int ghes_probe(struct platform_device *ghes_dev) break; case ACPI_HEST_NOTIFY_EXTERNAL: /* External interrupt vector is GSI */ - if (acpi_gsi_to_irq(generic->notify.vector, &ghes->irq)) { + rc = acpi_gsi_to_irq(generic->notify.vector, &ghes->irq); + if (rc) { pr_err(GHES_PFX "Failed to map GSI to IRQ for generic hardware error source: %d\n", generic->header.source_id); goto err_edac_unreg; } - if (request_irq(ghes->irq, ghes_irq_func, - 0, "GHES IRQ", ghes)) { + rc = request_irq(ghes->irq, ghes_irq_func, 0, "GHES IRQ", ghes); + if (rc) { pr_err(GHES_PFX "Failed to register IRQ for generic hardware error source: %d\n", generic->header.source_id); goto err_edac_unreg; -- cgit v0.10.2 From 9f29ab11ddbfc12db54df5a66dab22b39ad94e8e Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Tue, 4 Jun 2013 23:02:58 +0200 Subject: ACPI / scan: do not match drivers against objects having scan handlers With the introduction of ACPI scan handlers, an ACPI device object with an ACPI scan handler attached to it must not be bound to an ACPI driver any more. Therefore it doesn't make sense to match those ACPI device objects against a newly registered ACPI driver in acpi_bus_match(), so make that function return 0 if the device object passed to it has an ACPI scan handler attached. This also addresses a regression related to a broken ACPI table in the BIOS, where it has defined a _ROM method under the PCI root bridge object. This causes the video module to treat that object as a display controller device (since only display devices are supposed to have a _ROM method defined according to the ACPI spec). As a result, the ACPI video driver binds to the PCI root bridge object and overwrites the previously assigned driver_data field of it, causing subsequent calls to acpi_get_pci_dev() to fail. [rjw: Subject and changelog] References: https://bugzilla.kernel.org/show_bug.cgi?id=58091 Reported-by: Jason Cassell Reported-and-bisected-by: Dmitry S. Demin Cc: 3.9+ Signed-off-by: Aaron Lu Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 44225cb..90c5759e 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -740,6 +740,10 @@ static int acpi_bus_match(struct device *dev, struct device_driver *drv) struct acpi_device *acpi_dev = to_acpi_device(dev); struct acpi_driver *acpi_drv = to_acpi_driver(drv); + /* Skip ACPI device objects with scan handlers attached. */ + if (acpi_dev->handler) + return 0; + return acpi_dev->flags.match_driver && !acpi_match_device_ids(acpi_dev, acpi_drv->ids); } -- cgit v0.10.2 From 2f7021a815f20f3481c10884fe9735ce2a56db35 Mon Sep 17 00:00:00 2001 From: Michael Wang Date: Wed, 5 Jun 2013 08:49:37 +0000 Subject: cpufreq: protect 'policy->cpus' from offlining during __gov_queue_work() Jiri Kosina and Borislav Petkov reported the warning: [ 51.616759] ------------[ cut here ]------------ [ 51.621460] WARNING: at arch/x86/kernel/smp.c:123 native_smp_send_reschedule+0x58/0x60() [ 51.629638] Modules linked in: ext2 vfat fat loop snd_hda_codec_hdmi usbhid snd_hda_codec_realtek coretemp kvm_intel kvm snd_hda_intel snd_hda_codec crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hwdep snd_pcm aesni_intel sb_edac aes_x86_64 ehci_pci snd_page_alloc glue_helper snd_timer xhci_hcd snd iTCO_wdt iTCO_vendor_support ehci_hcd edac_core lpc_ich acpi_cpufreq lrw gf128mul ablk_helper cryptd mperf usbcore usb_common soundcore mfd_core dcdbas evdev pcspkr processor i2c_i801 button microcode [ 51.675581] CPU: 0 PID: 244 Comm: kworker/1:1 Tainted: G W 3.10.0-rc1+ #10 [ 51.683407] Hardware name: Dell Inc. Precision T3600/0PTTT9, BIOS A08 01/24/2013 [ 51.690901] Workqueue: events od_dbs_timer [ 51.695069] 0000000000000009 ffff88043a2f5b68 ffffffff8161441c ffff88043a2f5ba8 [ 51.702602] ffffffff8103e540 0000000000000033 0000000000000001 ffff88043d5f8000 [ 51.710136] 00000000ffff0ce1 0000000000000001 ffff88044fc4fc08 ffff88043a2f5bb8 [ 51.717691] Call Trace: [ 51.720191] [] dump_stack+0x19/0x1b [ 51.725396] [] warn_slowpath_common+0x70/0xa0 [ 51.731473] [] warn_slowpath_null+0x1a/0x20 [ 51.737378] [] native_smp_send_reschedule+0x58/0x60 [ 51.744013] [] wake_up_nohz_cpu+0x2d/0xa0 [ 51.749745] [] add_timer_on+0x8f/0x110 [ 51.755214] [] __queue_delayed_work+0x16e/0x1a0 [ 51.761470] [] ? try_to_grab_pending+0xd1/0x1a0 [ 51.767724] [] mod_delayed_work_on+0x5a/0xa0 [ 51.773719] [] gov_queue_work+0x4d/0xc0 [ 51.779271] [] od_dbs_timer+0xcb/0x170 [ 51.784734] [] process_one_work+0x1fd/0x540 [ 51.790634] [] ? process_one_work+0x192/0x540 [ 51.796711] [] worker_thread+0x122/0x380 [ 51.802350] [] ? rescuer_thread+0x320/0x320 [ 51.808264] [] kthread+0xea/0xf0 [ 51.813200] [] ? flush_kthread_worker+0x150/0x150 [ 51.819644] [] ret_from_fork+0x7c/0xb0 [ 51.918165] nouveau E[ DRM] GPU lockup - switching to software fbcon [ 51.930505] [] ? flush_kthread_worker+0x150/0x150 [ 51.936994] ---[ end trace f419538ada83b5c5 ]--- It was caused by the policy->cpus changed during the process of __gov_queue_work(), in other word, cpu offline happened. Use get/put_online_cpus() to prevent the offline from happening while __gov_queue_work() is running. [rjw: The problem has been present since recent commit 031299b (cpufreq: governors: Avoid unnecessary per cpu timer interrupts)] References: https://lkml.org/lkml/2013/6/5/88 Reported-by: Borislav Petkov Reported-and-tested-by: Jiri Kosina Signed-off-by: Michael Wang Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 5af40ad..dc9b72e 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -26,6 +26,7 @@ #include #include #include +#include #include "cpufreq_governor.h" @@ -180,8 +181,10 @@ void gov_queue_work(struct dbs_data *dbs_data, struct cpufreq_policy *policy, if (!all_cpus) { __gov_queue_work(smp_processor_id(), dbs_data, delay); } else { + get_online_cpus(); for_each_cpu(i, policy->cpus) __gov_queue_work(i, dbs_data, delay); + put_online_cpus(); } } EXPORT_SYMBOL_GPL(gov_queue_work); -- cgit v0.10.2 From 0ca684365547cd5f214b5739568dae3df5d6cec9 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 25 Feb 2013 18:22:37 +0100 Subject: cpufreq: cpufreq-cpu0: use the exact frequency for clk_set_rate() clk_set_rate() isn't supposed to accept approximate frequencies, instead a supported frequency should be obtained from clk_round_rate() and then used to set the clock. Signed-off-by: Guennadi Liakhovetski Acked-by: Shawn Guo Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index a64eb8b..ad1fde2 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -45,7 +45,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy, struct cpufreq_freqs freqs; struct opp *opp; unsigned long volt = 0, volt_old = 0, tol = 0; - long freq_Hz; + long freq_Hz, freq_exact; unsigned int index; int ret; @@ -60,6 +60,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy, freq_Hz = clk_round_rate(cpu_clk, freq_table[index].frequency * 1000); if (freq_Hz < 0) freq_Hz = freq_table[index].frequency * 1000; + freq_exact = freq_Hz; freqs.new = freq_Hz / 1000; freqs.old = clk_get_rate(cpu_clk) / 1000; @@ -98,7 +99,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy, } } - ret = clk_set_rate(cpu_clk, freqs.new * 1000); + ret = clk_set_rate(cpu_clk, freq_exact); if (ret) { pr_err("failed to set clock rate: %d\n", ret); if (cpu_reg) -- cgit v0.10.2 From 409b545ac10d9548929557a75ad86540f59a2c83 Mon Sep 17 00:00:00 2001 From: Phil Oester Date: Tue, 4 Jun 2013 05:09:27 +0000 Subject: netfilter: xt_TCPMSS: Fix violation of RFC879 in absence of MSS option The clamp-mss-to-pmtu option of the xt_TCPMSS target can cause issues connecting to websites if there was no MSS option present in the original SYN packet from the client. In these cases, it may add a MSS higher than the default specified in RFC879. Fix this by never setting a value > 536 if no MSS option was specified by the client. This closes netfilter's bugzilla #662. Signed-off-by: Phil Oester Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c index a75240f..afaebc7 100644 --- a/net/netfilter/xt_TCPMSS.c +++ b/net/netfilter/xt_TCPMSS.c @@ -125,6 +125,12 @@ tcpmss_mangle_packet(struct sk_buff *skb, skb_put(skb, TCPOLEN_MSS); + /* RFC 879 states that the default MSS is 536 without specific + * knowledge that the destination host is prepared to accept larger. + * Since no MSS was provided, we MUST NOT set a value > 536. + */ + newmss = min(newmss, (u16)536); + opt = (u_int8_t *)tcph + sizeof(struct tcphdr); memmove(opt + TCPOLEN_MSS, opt, tcplen - sizeof(struct tcphdr)); -- cgit v0.10.2 From ee4b7c7fe0c50b97d074f9185dba9558d9440c21 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Wed, 5 Jun 2013 14:51:30 +0100 Subject: ASoC: arizona: Correct AEC loopback enable Signed-off-by: Charles Keepax Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c index e895d39..100fdad 100644 --- a/sound/soc/codecs/wm5102.c +++ b/sound/soc/codecs/wm5102.c @@ -1120,7 +1120,8 @@ SND_SOC_DAPM_AIF_IN("AIF3RX2", NULL, 0, ARIZONA_DSP_WIDGETS(DSP1, "DSP1"), SND_SOC_DAPM_VALUE_MUX("AEC Loopback", ARIZONA_DAC_AEC_CONTROL_1, - ARIZONA_AEC_LOOPBACK_ENA, 0, &wm5102_aec_loopback_mux), + ARIZONA_AEC_LOOPBACK_ENA_SHIFT, 0, + &wm5102_aec_loopback_mux), SND_SOC_DAPM_PGA_E("OUT1L", SND_SOC_NOPM, ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev, diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index ba38f06..88ad7db 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -503,7 +503,8 @@ SND_SOC_DAPM_PGA("ASRC2R", ARIZONA_ASRC_ENABLE, ARIZONA_ASRC2R_ENA_SHIFT, 0, NULL, 0), SND_SOC_DAPM_VALUE_MUX("AEC Loopback", ARIZONA_DAC_AEC_CONTROL_1, - ARIZONA_AEC_LOOPBACK_ENA, 0, &wm5110_aec_loopback_mux), + ARIZONA_AEC_LOOPBACK_ENA_SHIFT, 0, + &wm5110_aec_loopback_mux), SND_SOC_DAPM_AIF_OUT("AIF1TX1", NULL, 0, ARIZONA_AIF1_TX_ENABLES, ARIZONA_AIF1TX1_ENA_SHIFT, 0), -- cgit v0.10.2 From 9a6aa279d3d17af73a029fa40654e92f4e75e8bb Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Wed, 5 Jun 2013 08:54:16 -0600 Subject: vfio: fix crash on rmmod devtmpfs_delete_node() calls devnode() callback with mode==NULL but vfio still tries to write there. The patch fixes this. Signed-off-by: Alexey Kardashevskiy Signed-off-by: Alex Williamson diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index acb7121..6d78736 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -1360,7 +1360,7 @@ static const struct file_operations vfio_device_fops = { */ static char *vfio_devnode(struct device *dev, umode_t *mode) { - if (MINOR(dev->devt) == 0) + if (mode && (MINOR(dev->devt) == 0)) *mode = S_IRUGO | S_IWUGO; return kasprintf(GFP_KERNEL, "vfio/%s", dev_name(dev)); -- cgit v0.10.2 From f4488035abdac56682153aa0cff3d1dce84e1c54 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 5 Jun 2013 12:21:11 +0200 Subject: USB: serial: fix TIOCMIWAIT return value Fix regression introduced by commit 143d9d9616 ("USB: serial: add tiocmiwait subdriver operation") which made the ioctl operation return ENODEV rather than ENOIOCTLCMD when a subdriver TIOCMIWAIT implementation is missing. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 4753c00..5f6b1ff 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -408,7 +408,7 @@ static int serial_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; - int retval = -ENODEV; + int retval = -ENOIOCTLCMD; dev_dbg(tty->dev, "%s - cmd 0x%.4x\n", __func__, cmd); @@ -420,8 +420,6 @@ static int serial_ioctl(struct tty_struct *tty, default: if (port->serial->type->ioctl) retval = port->serial->type->ioctl(tty, cmd, arg); - else - retval = -ENOIOCTLCMD; } return retval; -- cgit v0.10.2 From 338679f7ba4a81906b3fdfa6507824fdf704be80 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Tue, 4 Jun 2013 09:53:59 +0200 Subject: s390/pgtable: Fix guest overindication for change bit When doing the transition invalid->valid in the host page table for a guest, then the guest view of C/R is in the pgste. After validation the view is pgste OR real key. We must zero out the real key C/R to avoid guest over-indication for change (and reference). Touching the real key is ok also for the host: The change bit is tracked via write protection and the reference bit is also ok because set_pte_at was called and the page will be touched anyway soon. Furthermore architecture defines reference as "substantially accurate", over- and underindication are ok. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index ac01463..391e592 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -704,17 +704,19 @@ static inline void pgste_set_key(pte_t *ptep, pgste_t pgste, pte_t entry) { #ifdef CONFIG_PGSTE unsigned long address; - unsigned long okey, nkey; + unsigned long nkey; if (pte_val(entry) & _PAGE_INVALID) return; + VM_BUG_ON(!(pte_val(*ptep) & _PAGE_INVALID)); address = pte_val(entry) & PAGE_MASK; - okey = nkey = page_get_storage_key(address); - nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT); - /* Set page access key and fetch protection bit from pgste */ - nkey |= (pgste_val(pgste) & (RCP_ACC_BITS | RCP_FP_BIT)) >> 56; - if (okey != nkey) - page_set_storage_key(address, nkey, 0); + /* + * Set page access key and fetch protection bit from pgste. + * The guest C/R information is still in the PGSTE, set real + * key C/R to 0. + */ + nkey = (pgste_val(pgste) & (RCP_ACC_BITS | RCP_FP_BIT)) >> 56; + page_set_storage_key(address, nkey, 0); #endif } -- cgit v0.10.2 From 9cc5c206d9b44b7763aab3082a5be72c78a3ef7a Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 4 Jun 2013 11:00:08 +0200 Subject: s390/dumpstack: fix address ranges for asynchronous and panic stack git commit dc7ee00d4771b321 "s390: lowcore stack pointer offsets" introduced a regression in regard to show_stack(). The stack pointer for the asynchronous and the panic stack in the lowcore now have an additional offset applied to them. This offset needs to be taken into account in the calculation for the low and high address for the stacks. Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index 2982974..87acc38 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -74,6 +74,8 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high) static void show_trace(struct task_struct *task, unsigned long *stack) { + const unsigned long frame_size = + STACK_FRAME_OVERHEAD + sizeof(struct pt_regs); register unsigned long __r15 asm ("15"); unsigned long sp; @@ -82,11 +84,13 @@ static void show_trace(struct task_struct *task, unsigned long *stack) sp = task ? task->thread.ksp : __r15; printk("Call Trace:\n"); #ifdef CONFIG_CHECK_STACK - sp = __show_trace(sp, S390_lowcore.panic_stack - 4096, - S390_lowcore.panic_stack); + sp = __show_trace(sp, + S390_lowcore.panic_stack + frame_size - 4096, + S390_lowcore.panic_stack + frame_size); #endif - sp = __show_trace(sp, S390_lowcore.async_stack - ASYNC_SIZE, - S390_lowcore.async_stack); + sp = __show_trace(sp, + S390_lowcore.async_stack + frame_size - ASYNC_SIZE, + S390_lowcore.async_stack + frame_size); if (task) __show_trace(sp, (unsigned long) task_stack_page(task), (unsigned long) task_stack_page(task) + THREAD_SIZE); -- cgit v0.10.2 From 3a82603be4f5523ce21dd468a323aa36ff845f6d Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Wed, 5 Jun 2013 09:22:33 +0200 Subject: s390/pgtable: Save pgste during modify_prot_start/commit In modify_prot_start we update the pgste value but never store it back into the original location. Lets save the calculated result, since modify_prot_commit will use the value of the pgste. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 391e592..f9a0a70 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -640,6 +640,13 @@ static inline void pgste_set_unlock(pte_t *ptep, pgste_t pgste) #endif } +static inline void pgste_set(pte_t *ptep, pgste_t pgste) +{ +#ifdef CONFIG_PGSTE + *(pgste_t *)(ptep + PTRS_PER_PTE) = pgste; +#endif +} + static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste) { #ifdef CONFIG_PGSTE @@ -1101,8 +1108,10 @@ static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, if (!mm_exclusive(mm)) __ptep_ipte(address, ptep); - if (mm_has_pgste(mm)) + if (mm_has_pgste(mm)) { pgste = pgste_update_all(&pte, pgste); + pgste_set(ptep, pgste); + } return pte; } -- cgit v0.10.2 From a8f6e7f7953d1baa05a346bf7cee44f1d022c63d Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Wed, 5 Jun 2013 09:25:34 +0200 Subject: s390/pgtable: make pgste lock an explicit barrier Getting and Releasing the pgste lock has lock semantics. Make the code an explicit barrier. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index f9a0a70..e8b6e5b 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -623,7 +623,7 @@ static inline pgste_t pgste_get_lock(pte_t *ptep) " csg %0,%1,%2\n" " jl 0b\n" : "=&d" (old), "=&d" (new), "=Q" (ptep[PTRS_PER_PTE]) - : "Q" (ptep[PTRS_PER_PTE]) : "cc"); + : "Q" (ptep[PTRS_PER_PTE]) : "cc", "memory"); #endif return __pgste(new); } @@ -635,7 +635,8 @@ static inline void pgste_set_unlock(pte_t *ptep, pgste_t pgste) " nihh %1,0xff7f\n" /* clear RCP_PCL_BIT */ " stg %1,%0\n" : "=Q" (ptep[PTRS_PER_PTE]) - : "d" (pgste_val(pgste)), "Q" (ptep[PTRS_PER_PTE]) : "cc"); + : "d" (pgste_val(pgste)), "Q" (ptep[PTRS_PER_PTE]) + : "cc", "memory"); preempt_enable(); #endif } -- cgit v0.10.2 From 98f6d1a6681b9398968f9fe5e016d19c259b04c2 Mon Sep 17 00:00:00 2001 From: Peter Oberparleiter Date: Wed, 5 Jun 2013 15:51:57 +0200 Subject: s390/sclp: fix new line detection When printing multi-line text using sclp_print, line endings are not correctly handled. The routine is expecting an EBCDIC new line character as line terminator while the input text is encoded in ASCII format. Fix this problem by modifying sclp_print to scan for ASCII new line characters. Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/kernel/sclp.S b/arch/s390/kernel/sclp.S index b6506ee..29bd7be 100644 --- a/arch/s390/kernel/sclp.S +++ b/arch/s390/kernel/sclp.S @@ -225,7 +225,7 @@ _sclp_print: ahi %r2,1 ltr %r0,%r0 # end of string? jz .LfinalizemtoS4 - chi %r0,0x15 # end of line (NL)? + chi %r0,0x0a # end of line (NL)? jz .LfinalizemtoS4 stc %r0,0(%r6,%r7) # copy to mto la %r11,0(%r6,%r7) -- cgit v0.10.2 From 65694c5aaddfedd9da082e4e150cafc6b3fc8a6a Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Wed, 5 Jun 2013 15:15:41 +0100 Subject: x86/PCI: Map PCI setup data with ioremap() so it can be in highmem f9a37be0f0 ("x86: Use PCI setup data") added support for using PCI ROM images from setup_data. This used phys_to_virt(), which is not valid for highmem addresses, and can cause a crash when booting a 32-bit kernel via the EFI boot stub. pcibios_add_device() assumes that the physical addresses stored in setup_data are accessible via the direct kernel mapping, and that calling phys_to_virt() is valid. This isn't guaranteed to be true on x86 where the direct mapping range is much smaller than on x86-64. Calling phys_to_virt() on a highmem address results in the following: BUG: unable to handle kernel paging request at 39a3c198 IP: [] pcibios_add_device+0x2f/0x90 ... Call Trace: [] pci_device_add+0xe3/0x130 [] pci_scan_single_device+0x8b/0xb0 [] pci_scan_slot+0x48/0x100 [] pci_scan_child_bus+0x24/0xc0 [] pci_acpi_scan_root+0x2c0/0x490 [] acpi_pci_root_add+0x312/0x42f ... The solution is to use ioremap() instead of phys_to_virt() to map the setup data into the kernel address space. [bhelgaas: changelog] Tested-by: Jani Nikula Signed-off-by: Matt Fleming Signed-off-by: Bjorn Helgaas Cc: Matthew Garrett Cc: Seth Forshee Cc: Jesse Barnes Cc: stable@vger.kernel.org # v3.8+ diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 305c68b..981c2db 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -628,7 +628,9 @@ int pcibios_add_device(struct pci_dev *dev) pa_data = boot_params.hdr.setup_data; while (pa_data) { - data = phys_to_virt(pa_data); + data = ioremap(pa_data, sizeof(*rom)); + if (!data) + return -ENOMEM; if (data->type == SETUP_PCI) { rom = (struct pci_setup_rom *)data; @@ -645,6 +647,7 @@ int pcibios_add_device(struct pci_dev *dev) } } pa_data = data->next; + iounmap(data); } return 0; } -- cgit v0.10.2 From 275236797916924103e133e3d7a7ea777c951273 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Wed, 29 May 2013 16:57:30 +0100 Subject: ARM: 7737/1: fix kernel decompressor compilation error with CONFIG_DEBUG_SEMIHOSTING Selecting this option produces: AS arch/arm/boot/compressed/debug.o arch/arm/boot/compressed/debug.S:4:33: fatal error: mach/debug-macro.S: No such file or directory compilation terminated. make[3]: *** [arch/arm/boot/compressed/debug.o] Error 1 The semihosting support cannot be modelled into a senduart macro as it requires memory space for argument passing. So the CONFIG_DEBUG_LL_INCLUDE may not have any sensible value and the include directive should be omitted. While at it, let's add proper semihosting output support to the decompressor. Signed-off-by: Nicolas Pitre Acked-by: Shawn Guo Signed-off-by: Russell King diff --git a/arch/arm/boot/compressed/debug.S b/arch/arm/boot/compressed/debug.S index 6e8382d..5392ee6 100644 --- a/arch/arm/boot/compressed/debug.S +++ b/arch/arm/boot/compressed/debug.S @@ -1,6 +1,8 @@ #include #include +#ifndef CONFIG_DEBUG_SEMIHOSTING + #include CONFIG_DEBUG_LL_INCLUDE ENTRY(putc) @@ -10,3 +12,29 @@ ENTRY(putc) busyuart r3, r1 mov pc, lr ENDPROC(putc) + +#else + +ENTRY(putc) + adr r1, 1f + ldmia r1, {r2, r3} + add r2, r2, r1 + ldr r1, [r2, r3] + strb r0, [r1] + mov r0, #0x03 @ SYS_WRITEC + ARM( svc #0x123456 ) + THUMB( svc #0xab ) + mov pc, lr + .align 2 +1: .word _GLOBAL_OFFSET_TABLE_ - . + .word semi_writec_buf(GOT) +ENDPROC(putc) + + .bss + .global semi_writec_buf + .type semi_writec_buf, %object +semi_writec_buf: + .space 4 + .size semi_writec_buf, 4 + +#endif -- cgit v0.10.2 From 92bdd3f5eba299b33c2f4407977d6fa2e2a6a0da Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 31 May 2013 22:49:22 +0100 Subject: ARM: 7742/1: topology: export cpu_topology The cpu_topology symbol is required by any driver using the topology interfaces, which leads to a couple of build errors: ERROR: "cpu_topology" [drivers/net/ethernet/sfc/sfc.ko] undefined! ERROR: "cpu_topology" [drivers/cpufreq/arm_big_little.ko] undefined! ERROR: "cpu_topology" [drivers/block/mtip32xx/mtip32xx.ko] undefined! The obvious solution is to export this symbol. Signed-off-by: Arnd Bergmann Acked-by: Will Deacon Cc: stable@vger.kernel.org Cc: Nicolas Pitre Cc: Vincent Guittot Signed-off-by: Russell King diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index f10316b..c5a5954 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -13,6 +13,7 @@ #include #include +#include #include #include #include @@ -200,6 +201,7 @@ static inline void update_cpu_power(unsigned int cpuid, unsigned int mpidr) {} * cpu topology table */ struct cputopo_arm cpu_topology[NR_CPUS]; +EXPORT_SYMBOL_GPL(cpu_topology); const struct cpumask *cpu_coregroup_mask(int cpu) { -- cgit v0.10.2 From da94a829305f1c217cfdf6771cb1faca0917e3b9 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 31 May 2013 22:50:47 +0100 Subject: ARM: 7743/1: compressed/head.S: work around new binutils warning In August 2012, Matthew Gretton-Dann checked a change into binutils labelled "Error on obsolete & warn on deprecated registers", apparently as part of ARMv8 support. Apparently, this was supposed to emit the message "Warning: This coprocessor register access is deprecated in ARMv8" when using certain mcr/mrc instructions and building for ARMv8. Unfortunately, the message that is actually emitted appears to be '(null)', which is less helpful in comparison. Even more unfortunately, this is biting us on every single kernel build with a new gas, because arch/arm/boot/compressed/head.S and some other files in that directory are built with -march=all since kernel commit 80cec14a8 "[ARM] Add -march=all to assembly file build in arch/arm/boot/compressed" back in v2.6.28. This patch reverts Russell's nice solution and instead marks the head.S file to be built for armv7-a, which fortunately lets us build all instructions in that file without warnings even on the broken binutils. Without this patch, building anything results in: arch/arm/boot/compressed/head.S: Assembler messages: arch/arm/boot/compressed/head.S:565: Warning: (null) arch/arm/boot/compressed/head.S:676: Warning: (null) arch/arm/boot/compressed/head.S:698: Warning: (null) arch/arm/boot/compressed/head.S:722: Warning: (null) arch/arm/boot/compressed/head.S:726: Warning: (null) arch/arm/boot/compressed/head.S:957: Warning: (null) arch/arm/boot/compressed/head.S:996: Warning: (null) arch/arm/boot/compressed/head.S:997: Warning: (null) arch/arm/boot/compressed/head.S:1027: Warning: (null) arch/arm/boot/compressed/head.S:1035: Warning: (null) arch/arm/boot/compressed/head.S:1046: Warning: (null) arch/arm/boot/compressed/head.S:1060: Warning: (null) arch/arm/boot/compressed/head.S:1092: Warning: (null) arch/arm/boot/compressed/head.S:1094: Warning: (null) arch/arm/boot/compressed/head.S:1095: Warning: (null) arch/arm/boot/compressed/head.S:1102: Warning: (null) arch/arm/boot/compressed/head.S:1134: Warning: (null) Signed-off-by: Arnd Bergmann Cc: stable@vger.kernel.org Cc: Matthew Gretton-Dann Signed-off-by: Russell King diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 3580d57..79e9bdb 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -124,7 +124,7 @@ KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) endif ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) -asflags-y := -Wa,-march=all -DZIMAGE +asflags-y := -DZIMAGE # Supply kernel BSS size to the decompressor via a linker symbol. KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \ diff --git a/arch/arm/boot/compressed/head-sa1100.S b/arch/arm/boot/compressed/head-sa1100.S index 6179d94..3115e31 100644 --- a/arch/arm/boot/compressed/head-sa1100.S +++ b/arch/arm/boot/compressed/head-sa1100.S @@ -11,6 +11,7 @@ #include .section ".start", "ax" + .arch armv4 __SA1100_start: diff --git a/arch/arm/boot/compressed/head-shark.S b/arch/arm/boot/compressed/head-shark.S index 089c560..92b5689 100644 --- a/arch/arm/boot/compressed/head-shark.S +++ b/arch/arm/boot/compressed/head-shark.S @@ -18,6 +18,7 @@ .section ".start", "ax" + .arch armv4 b __beginning __ofw_data: .long 0 @ the number of memory blocks diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index fe4d9c3..6938559 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -11,6 +11,7 @@ #include #include + .arch armv7-a /* * Debugging stuff * -- cgit v0.10.2 From ced2a3b84965f1be8b6a142d6029faf241f109af Mon Sep 17 00:00:00 2001 From: Marc C Date: Wed, 5 Jun 2013 22:02:23 +0100 Subject: ARM: 7750/1: update legacy CPU ID in decompressor cache support jump table The previous mask values for the legacy ARM CPU IDs were conflicting with the CPU ID assignments for late-generation CPUs (like the Qualcomm MSM/QSD or Broadcom Brahma-15 processors). This change corrects the legacy ARM CPU ID value so that the jump table can fall-through to the appropriate cache maintenance / MMU functions. Signed-off-by: Marc C Signed-off-by: Russell King diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 6938559..032a8d9 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -806,8 +806,8 @@ call_cache_fn: adr r12, proc_types .align 2 .type proc_types,#object proc_types: - .word 0x00000000 @ old ARM ID - .word 0x0000f000 + .word 0x41000000 @ old ARM ID + .word 0xff00f000 mov pc, lr THUMB( nop ) mov pc, lr -- cgit v0.10.2 From 509eb76ebf9771abc9fe51859382df2571f11447 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 5 Jun 2013 11:20:33 +0100 Subject: ARM: 7747/1: pcpu: ensure __my_cpu_offset cannot be re-ordered across barrier() __my_cpu_offset is non-volatile, since we want its value to be cached when we access several per-cpu variables in a row with preemption disabled. This means that we rely on preempt_{en,dis}able to hazard with the operation via the barrier() macro, so that we can't end up migrating CPUs without reloading the per-cpu offset. Unfortunately, GCC doesn't treat a "memory" clobber on a non-volatile asm block as a side-effect, and will happily re-order it before other memory clobbers (including those in prempt_disable()) and cache the value. This has been observed to break the cmpxchg logic in the slub allocator, leading to livelock in kmem_cache_alloc in mainline kernels. This patch adds a dummy memory input operand to __my_cpu_offset, forcing it to be ordered with respect to the barrier() macro. Cc: Cc: Rob Herring Reviewed-by: Nicolas Pitre Signed-off-by: Will Deacon Signed-off-by: Russell King diff --git a/arch/arm/include/asm/percpu.h b/arch/arm/include/asm/percpu.h index 968c0a1..209e650 100644 --- a/arch/arm/include/asm/percpu.h +++ b/arch/arm/include/asm/percpu.h @@ -30,8 +30,15 @@ static inline void set_my_cpu_offset(unsigned long off) static inline unsigned long __my_cpu_offset(void) { unsigned long off; - /* Read TPIDRPRW */ - asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) : : "memory"); + register unsigned long *sp asm ("sp"); + + /* + * Read TPIDRPRW. + * We want to allow caching the value, so avoid using volatile and + * instead use a fake stack read to hazard against barrier(). + */ + asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) : "Q" (*sp)); + return off; } #define __my_cpu_offset __my_cpu_offset() -- cgit v0.10.2 From 29eb77825cc7da8d45b642de2de3d423dc8a363f Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 5 Jun 2013 12:26:50 +0200 Subject: arch, mm: Remove tlb_fast_mode() Since the introduction of preemptible mmu_gather TLB fast mode has been broken. TLB fast mode relies on there being absolutely no concurrency; it frees pages first and invalidates TLBs later. However now we can get concurrency and stuff goes *bang*. This patch removes all tlb_fast_mode() code; it was found the better option vs trying to patch the hole by entangling tlb invalidation with the scheduler. Cc: Thomas Gleixner Cc: Russell King Cc: Tony Luck Reported-by: Max Filippov Signed-off-by: Peter Zijlstra Signed-off-by: Linus Torvalds diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 99a1951..bdf2b84 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -33,18 +33,6 @@ #include #include -/* - * We need to delay page freeing for SMP as other CPUs can access pages - * which have been removed but not yet had their TLB entries invalidated. - * Also, as ARMv7 speculative prefetch can drag new entries into the TLB, - * we need to apply this same delaying tactic to ensure correct operation. - */ -#if defined(CONFIG_SMP) || defined(CONFIG_CPU_32v7) -#define tlb_fast_mode(tlb) 0 -#else -#define tlb_fast_mode(tlb) 1 -#endif - #define MMU_GATHER_BUNDLE 8 /* @@ -112,12 +100,10 @@ static inline void __tlb_alloc_page(struct mmu_gather *tlb) static inline void tlb_flush_mmu(struct mmu_gather *tlb) { tlb_flush(tlb); - if (!tlb_fast_mode(tlb)) { - free_pages_and_swap_cache(tlb->pages, tlb->nr); - tlb->nr = 0; - if (tlb->pages == tlb->local) - __tlb_alloc_page(tlb); - } + free_pages_and_swap_cache(tlb->pages, tlb->nr); + tlb->nr = 0; + if (tlb->pages == tlb->local) + __tlb_alloc_page(tlb); } static inline void @@ -178,11 +164,6 @@ tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma) static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page) { - if (tlb_fast_mode(tlb)) { - free_page_and_swap_cache(page); - return 1; /* avoid calling tlb_flush_mmu */ - } - tlb->pages[tlb->nr++] = page; VM_BUG_ON(tlb->nr > tlb->max); return tlb->max - tlb->nr; diff --git a/arch/ia64/include/asm/tlb.h b/arch/ia64/include/asm/tlb.h index c3ffe3e..ef3a9de 100644 --- a/arch/ia64/include/asm/tlb.h +++ b/arch/ia64/include/asm/tlb.h @@ -46,12 +46,6 @@ #include #include -#ifdef CONFIG_SMP -# define tlb_fast_mode(tlb) ((tlb)->nr == ~0U) -#else -# define tlb_fast_mode(tlb) (1) -#endif - /* * If we can't allocate a page to make a big batch of page pointers * to work on, then just handle a few from the on-stack structure. @@ -60,7 +54,7 @@ struct mmu_gather { struct mm_struct *mm; - unsigned int nr; /* == ~0U => fast mode */ + unsigned int nr; unsigned int max; unsigned char fullmm; /* non-zero means full mm flush */ unsigned char need_flush; /* really unmapped some PTEs? */ @@ -103,6 +97,7 @@ extern struct ia64_tr_entry *ia64_idtrs[NR_CPUS]; static inline void ia64_tlb_flush_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long end) { + unsigned long i; unsigned int nr; if (!tlb->need_flush) @@ -141,13 +136,11 @@ ia64_tlb_flush_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long e /* lastly, release the freed pages */ nr = tlb->nr; - if (!tlb_fast_mode(tlb)) { - unsigned long i; - tlb->nr = 0; - tlb->start_addr = ~0UL; - for (i = 0; i < nr; ++i) - free_page_and_swap_cache(tlb->pages[i]); - } + + tlb->nr = 0; + tlb->start_addr = ~0UL; + for (i = 0; i < nr; ++i) + free_page_and_swap_cache(tlb->pages[i]); } static inline void __tlb_alloc_page(struct mmu_gather *tlb) @@ -167,20 +160,7 @@ tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned int full_m tlb->mm = mm; tlb->max = ARRAY_SIZE(tlb->local); tlb->pages = tlb->local; - /* - * Use fast mode if only 1 CPU is online. - * - * It would be tempting to turn on fast-mode for full_mm_flush as well. But this - * doesn't work because of speculative accesses and software prefetching: the page - * table of "mm" may (and usually is) the currently active page table and even - * though the kernel won't do any user-space accesses during the TLB shoot down, a - * compiler might use speculation or lfetch.fault on what happens to be a valid - * user-space address. This in turn could trigger a TLB miss fault (or a VHPT - * walk) and re-insert a TLB entry we just removed. Slow mode avoids such - * problems. (We could make fast-mode work by switching the current task to a - * different "mm" during the shootdown.) --davidm 08/02/2002 - */ - tlb->nr = (num_online_cpus() == 1) ? ~0U : 0; + tlb->nr = 0; tlb->fullmm = full_mm_flush; tlb->start_addr = ~0UL; } @@ -214,11 +194,6 @@ static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page) { tlb->need_flush = 1; - if (tlb_fast_mode(tlb)) { - free_page_and_swap_cache(page); - return 1; /* avoid calling tlb_flush_mmu */ - } - if (!tlb->nr && tlb->pages == tlb->local) __tlb_alloc_page(tlb); diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index b1b1fa6..13821c3 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -97,11 +97,9 @@ struct mmu_gather { unsigned long start; unsigned long end; unsigned int need_flush : 1, /* Did free PTEs */ - fast_mode : 1; /* No batching */ - /* we are in the middle of an operation to clear * a full mm and can make some optimizations */ - unsigned int fullmm : 1, + fullmm : 1, /* we have performed an operation which * requires a complete flush of the tlb */ need_flush_all : 1; @@ -114,19 +112,6 @@ struct mmu_gather { #define HAVE_GENERIC_MMU_GATHER -static inline int tlb_fast_mode(struct mmu_gather *tlb) -{ -#ifdef CONFIG_SMP - return tlb->fast_mode; -#else - /* - * For UP we don't need to worry about TLB flush - * and page free order so much.. - */ - return 1; -#endif -} - void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, bool fullmm); void tlb_flush_mmu(struct mmu_gather *tlb); void tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, diff --git a/mm/memory.c b/mm/memory.c index 6dc1882..61a262b 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -220,7 +220,6 @@ void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, bool fullmm) tlb->start = -1UL; tlb->end = 0; tlb->need_flush = 0; - tlb->fast_mode = (num_possible_cpus() == 1); tlb->local.next = NULL; tlb->local.nr = 0; tlb->local.max = ARRAY_SIZE(tlb->__pages); @@ -244,9 +243,6 @@ void tlb_flush_mmu(struct mmu_gather *tlb) tlb_table_flush(tlb); #endif - if (tlb_fast_mode(tlb)) - return; - for (batch = &tlb->local; batch; batch = batch->next) { free_pages_and_swap_cache(batch->pages, batch->nr); batch->nr = 0; @@ -288,11 +284,6 @@ int __tlb_remove_page(struct mmu_gather *tlb, struct page *page) VM_BUG_ON(!tlb->need_flush); - if (tlb_fast_mode(tlb)) { - free_page_and_swap_cache(page); - return 1; /* avoid calling tlb_flush_mmu() */ - } - batch = tlb->active; batch->pages[batch->nr++] = page; if (batch->nr == batch->max) { -- cgit v0.10.2 From d2983cdb480157f637df07723f28aaa657b1080d Mon Sep 17 00:00:00 2001 From: Ferruh Yigit Date: Thu, 23 May 2013 09:56:55 -0700 Subject: Input: cyttsp - fix memcpy size param memcpy param is wrong because of offset in bl_cmd, this may corrupt the stack which may cause a crash. Tested-by: Ferruh Yigit on TMA300-DVK Signed-off-by: Ferruh Yigit Acked-by: Javier Martinez Canillas Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c index 8e60437..97ba891 100644 --- a/drivers/input/touchscreen/cyttsp_core.c +++ b/drivers/input/touchscreen/cyttsp_core.c @@ -133,7 +133,7 @@ static int cyttsp_exit_bl_mode(struct cyttsp *ts) memcpy(bl_cmd, bl_command, sizeof(bl_command)); if (ts->pdata->bl_keys) memcpy(&bl_cmd[sizeof(bl_command) - CY_NUM_BL_KEYS], - ts->pdata->bl_keys, sizeof(bl_command)); + ts->pdata->bl_keys, CY_NUM_BL_KEYS); error = ttsp_write_block_data(ts, CY_REG_BASE, sizeof(bl_cmd), bl_cmd); -- cgit v0.10.2 From fbd5e77e65c36d84dbcd71a19c4d1526f4604bdb Mon Sep 17 00:00:00 2001 From: Ferruh Yigit Date: Thu, 23 May 2013 10:04:36 -0700 Subject: Input: cyttsp - add missing handshake For the devices that has blocking with timeout communication, these extra handshakes will prevent one timeout delay in startup sequence Tested-by: Ferruh Yigit on TMA300-DVK Signed-off-by: Ferruh Yigit Acked-by: Javier Martinez Canillas Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c index 97ba891..ae89d26 100644 --- a/drivers/input/touchscreen/cyttsp_core.c +++ b/drivers/input/touchscreen/cyttsp_core.c @@ -116,6 +116,15 @@ static int ttsp_send_command(struct cyttsp *ts, u8 cmd) return ttsp_write_block_data(ts, CY_REG_BASE, sizeof(cmd), &cmd); } +static int cyttsp_handshake(struct cyttsp *ts) +{ + if (ts->pdata->use_hndshk) + return ttsp_send_command(ts, + ts->xy_data.hst_mode ^ CY_HNDSHK_BIT); + + return 0; +} + static int cyttsp_load_bl_regs(struct cyttsp *ts) { memset(&ts->bl_data, 0, sizeof(ts->bl_data)); @@ -167,6 +176,10 @@ static int cyttsp_set_operational_mode(struct cyttsp *ts) if (error) return error; + error = cyttsp_handshake(ts); + if (error) + return error; + return ts->xy_data.act_dist == CY_ACT_DIST_DFLT ? -EIO : 0; } @@ -188,6 +201,10 @@ static int cyttsp_set_sysinfo_mode(struct cyttsp *ts) if (error) return error; + error = cyttsp_handshake(ts); + if (error) + return error; + if (!ts->sysinfo_data.tts_verh && !ts->sysinfo_data.tts_verl) return -EIO; @@ -344,12 +361,9 @@ static irqreturn_t cyttsp_irq(int irq, void *handle) goto out; /* provide flow control handshake */ - if (ts->pdata->use_hndshk) { - error = ttsp_send_command(ts, - ts->xy_data.hst_mode ^ CY_HNDSHK_BIT); - if (error) - goto out; - } + error = cyttsp_handshake(ts); + if (error) + goto out; if (unlikely(ts->state == CY_IDLE_STATE)) goto out; -- cgit v0.10.2 From d3bf073aa7d50f06f81b4065a39fd6dc046f8bb2 Mon Sep 17 00:00:00 2001 From: Matthias Kaehlcke Date: Wed, 5 Jun 2013 22:42:51 -0700 Subject: Input: cyttsp - fix swapped mfg_stat and mfg_cmd registers The command and status register in the driver were swapped with respect to the order specified in the datasheet (CY8CTMA140). Confirmed with Cypress that the order in the datasheet is correct. Signed-off-by: Matthias Kaehlcke Acked-by: Javier Martinez Canillas Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/cyttsp_core.h b/drivers/input/touchscreen/cyttsp_core.h index 1aa3c69..f1ebde3 100644 --- a/drivers/input/touchscreen/cyttsp_core.h +++ b/drivers/input/touchscreen/cyttsp_core.h @@ -67,8 +67,8 @@ struct cyttsp_xydata { /* TTSP System Information interface definition */ struct cyttsp_sysinfo_data { u8 hst_mode; - u8 mfg_cmd; u8 mfg_stat; + u8 mfg_cmd; u8 cid[3]; u8 tt_undef1; u8 uid[8]; -- cgit v0.10.2 From 406b5ee22215554a37760b6fa807da6ad4d52f52 Mon Sep 17 00:00:00 2001 From: Yoichi Yuasa Date: Tue, 28 May 2013 01:23:22 +0000 Subject: MIPS: rtlx: Fix implicit declaration of function set_vi_handler() arch/mips/kernel/rtlx.c: In function 'rtlx_module_init': arch/mips/kernel/rtlx.c:523:3: error: implicit declaration of function 'set_vi_handler' [-Werror=implicit-function-declaration] Signed-off-by: Yoichi Yuasa Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5340/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c index 93c070b..6fa198d 100644 --- a/arch/mips/kernel/rtlx.c +++ b/arch/mips/kernel/rtlx.c @@ -40,6 +40,7 @@ #include #include #include +#include static struct rtlx_info *rtlx; static int major; -- cgit v0.10.2 From 38c3c0f6733bec1d1841915a9a82d2c324362686 Mon Sep 17 00:00:00 2001 From: David Daney Date: Fri, 24 May 2013 16:23:02 +0000 Subject: MIPS: OCTEON: Improve _machine_halt implementation. As noted by Wladislav Wiebe: $ halt .. Sent SIGKILL to all processes Requesting system halt [66.729373] System halted. [66.733244] [66.734761] ===================================== [66.739473] [ BUG: lock held at task exit time! ] [66.744188] 3.8.7-0-sampleversion-fct #49 Tainted: G O [66.750202] ------------------------------------- [66.754913] init/21479 is exiting with locks still held! [66.760234] 1 lock held by init/21479: [66.763990] #0: (reboot_mutex){+.+...}, at: [] SyS_reboot+0xe0/0x218 [66.772165] [66.772165] stack backtrace: [66.776532] Call Trace: [66.778992] [] dump_stack+0x8/0x34 [66.783972] [] do_exit+0x610/0xa70 [66.788948] [] SyS_reboot+0x1c0/0x218 [66.794186] [] handle_sys64+0x44/0x64 This is an alternative fix to the one sent by Wladislav. We kill the watchdog for each CPU and then spin in WAIT with interrupts disabled. This is the lowest power mode for the OCTEON. If we were to spin with interrupts enabled, we would get a continual stream of warning messages and backtraces from the lockup detector, so I chose to disable interrupts. Signed-off-by: David Daney Cc: Maxim Uvarov Cc: Wladislav Wiebe Cc: linux-mips@linux-mips.org Cc: David Daney Patchwork: https://patchwork.linux-mips.org/patch/5324/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index b0baa29..01b1b3f 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -428,13 +428,16 @@ static void octeon_restart(char *command) */ static void octeon_kill_core(void *arg) { - mb(); - if (octeon_is_simulation()) { - /* The simulator needs the watchdog to stop for dead cores */ - cvmx_write_csr(CVMX_CIU_WDOGX(cvmx_get_core_num()), 0); + if (octeon_is_simulation()) /* A break instruction causes the simulator stop a core */ - asm volatile ("sync\nbreak"); - } + asm volatile ("break" ::: "memory"); + + local_irq_disable(); + /* Disable watchdog on this core. */ + cvmx_write_csr(CVMX_CIU_WDOGX(cvmx_get_core_num()), 0); + /* Spin in a low power mode. */ + while (true) + asm volatile ("wait" ::: "memory"); } -- cgit v0.10.2 From 7b741aa4067b375caa4fce41e292d2f60cf9c98a Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 29 May 2013 00:48:10 +0200 Subject: MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit cputime_to_timeval() takes a struct timeval *as its second argument but a struct compat_timeval * will be passed resulting in: CC arch/mips/kernel/binfmt_elfn32.o In file included from arch/mips/kernel/binfmt_elfn32.c:122:0: arch/mips/kernel/../../../fs/binfmt_elf.c: In function ‘fill_prstatus’: arch/mips/kernel/../../../fs/binfmt_elf.c:1330:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfn32.c:55: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfn32.c:122:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1331:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfn32.c:55: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfn32.c:122:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1336:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfn32.c:55: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfn32.c:122:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1337:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfn32.c:55: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfn32.c:122:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1339:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfn32.c:55: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfn32.c:122:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1340:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfn32.c:55: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ AS arch/mips/kernel/scall64-n32.o CC arch/mips/kernel/signal_n32.o CC arch/mips/kernel/binfmt_elfo32.o In file included from arch/mips/kernel/binfmt_elfo32.c:165:0: arch/mips/kernel/../../../fs/binfmt_elf.c: In function ‘fill_prstatus’: arch/mips/kernel/../../../fs/binfmt_elf.c:1330:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfo32.c:78: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfo32.c:165:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1331:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfo32.c:78: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfo32.c:165:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1336:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfo32.c:78: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfo32.c:165:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1337:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfo32.c:78: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfo32.c:165:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1339:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfo32.c:78: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ In file included from arch/mips/kernel/binfmt_elfo32.c:165:0: arch/mips/kernel/../../../fs/binfmt_elf.c:1340:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default] In file included from include/asm-generic/cputime.h:12:0, from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4, from include/linux/sched.h:28, from include/linux/ptrace.h:5, from include/uapi/linux/elfcore.h:7, from include/linux/elfcore.h:7, from arch/mips/kernel/binfmt_elfo32.c:78: include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’ Signed-off-by: Ralf Baechle diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c index e06f777..1188e00 100644 --- a/arch/mips/kernel/binfmt_elfn32.c +++ b/arch/mips/kernel/binfmt_elfn32.c @@ -119,4 +119,15 @@ MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)"); #undef TASK_SIZE #define TASK_SIZE TASK_SIZE32 +#undef cputime_to_timeval +#define cputime_to_timeval cputime_to_compat_timeval +static __inline__ void +cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value) +{ + unsigned long jiffies = cputime_to_jiffies(cputime); + + value->tv_usec = (jiffies % HZ) * (1000000L / HZ); + value->tv_sec = jiffies / HZ; +} + #include "../../../fs/binfmt_elf.c" diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c index 97c5a16..202e581 100644 --- a/arch/mips/kernel/binfmt_elfo32.c +++ b/arch/mips/kernel/binfmt_elfo32.c @@ -162,4 +162,15 @@ MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)"); #undef TASK_SIZE #define TASK_SIZE TASK_SIZE32 +#undef cputime_to_timeval +#define cputime_to_timeval cputime_to_compat_timeval +static __inline__ void +cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value) +{ + unsigned long jiffies = cputime_to_jiffies(cputime); + + value->tv_usec = (jiffies % HZ) * (1000000L / HZ); + value->tv_sec = jiffies / HZ; +} + #include "../../../fs/binfmt_elf.c" -- cgit v0.10.2 From cdfce53986a39daf039b62b69026867734d8430a Mon Sep 17 00:00:00 2001 From: John Crispin Date: Thu, 6 Jun 2013 12:55:53 +0000 Subject: MIPS: ralink: add missing SZ_1M multiplier On RT5350 the memory size is set to Bytes and not MegaBytes due to a missing multiplier. Signed-off-by: John Crispin Cc: John Crispin Patchwork: https://patchwork.linux-mips.org/patch/5378/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c index fb15695..6b5f340 100644 --- a/arch/mips/ralink/of.c +++ b/arch/mips/ralink/of.c @@ -88,7 +88,7 @@ void __init plat_mem_setup(void) __dt_setup_arch(&__dtb_start); if (soc_info.mem_size) - add_memory_region(soc_info.mem_base, soc_info.mem_size, + add_memory_region(soc_info.mem_base, soc_info.mem_size * SZ_1M, BOOT_MEM_RAM); else detect_memory_region(soc_info.mem_base, -- cgit v0.10.2 From a93d8a1cea0899982993e9a93404c6f78b123697 Mon Sep 17 00:00:00 2001 From: Jean-Philippe Francois Date: Thu, 6 Jun 2013 08:48:07 -0600 Subject: ARM: omap3: clock: fix wrong container_of in clock36xx.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit omap36xx_pwrdn_clk_enable_with_hsdiv_restore expects the parent hw of the clock to be a clk_hw_omap. However, looking at cclock3xxx_data.c, all concerned clock have parent defined as clk_divider. Fix the function to use clk_divider. Tested with 3.9 on dm3730. Signed-off-by: Jean-Philippe François Cc: NeilBrown Cc: Mike Turquette Signed-off-by: Paul Walmsley diff --git a/arch/arm/mach-omap2/clock36xx.c b/arch/arm/mach-omap2/clock36xx.c index 8f3bf4e..bbd6a3f 100644 --- a/arch/arm/mach-omap2/clock36xx.c +++ b/arch/arm/mach-omap2/clock36xx.c @@ -20,11 +20,12 @@ #include #include +#include #include #include "clock.h" #include "clock36xx.h" - +#define to_clk_divider(_hw) container_of(_hw, struct clk_divider, hw) /** * omap36xx_pwrdn_clk_enable_with_hsdiv_restore - enable clocks suffering @@ -39,29 +40,28 @@ */ int omap36xx_pwrdn_clk_enable_with_hsdiv_restore(struct clk_hw *clk) { - struct clk_hw_omap *parent; + struct clk_divider *parent; struct clk_hw *parent_hw; - u32 dummy_v, orig_v, clksel_shift; + u32 dummy_v, orig_v; int ret; /* Clear PWRDN bit of HSDIVIDER */ ret = omap2_dflt_clk_enable(clk); parent_hw = __clk_get_hw(__clk_get_parent(clk->clk)); - parent = to_clk_hw_omap(parent_hw); + parent = to_clk_divider(parent_hw); /* Restore the dividers */ if (!ret) { - clksel_shift = __ffs(parent->clksel_mask); - orig_v = __raw_readl(parent->clksel_reg); + orig_v = __raw_readl(parent->reg); dummy_v = orig_v; /* Write any other value different from the Read value */ - dummy_v ^= (1 << clksel_shift); - __raw_writel(dummy_v, parent->clksel_reg); + dummy_v ^= (1 << parent->shift); + __raw_writel(dummy_v, parent->reg); /* Write the original divider */ - __raw_writel(orig_v, parent->clksel_reg); + __raw_writel(orig_v, parent->reg); } return ret; -- cgit v0.10.2 From bb9b8e86ad083ecb2567ae909c1d6cb0bbaa60fe Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 3 Jun 2013 15:28:46 +1000 Subject: xfs: rework dquot CRCs Calculating dquot CRCs when the backing buffer is written back just doesn't work reliably. There are several places which manipulate dquots directly in the buffers, and they don't calculate CRCs appropriately, nor do they always set the buffer up to calculate CRCs appropriately. Firstly, if we log a dquot buffer (e.g. during allocation) it gets logged without valid CRC, and so on recovery we end up with a dquot that is not valid. Secondly, if we recover/repair a dquot, we don't have a verifier attached to the buffer and hence CRCs are not calculated on the way down to disk. Thirdly, calculating the CRC after we've changed the contents means that if we re-read the dquot from the buffer, we cannot verify the contents of the dquot are valid, as the CRC is invalid. So, to avoid all the dquot CRC errors that are being detected by the read verifier, change to using the same model as for inodes. That is, dquot CRCs are calculated and written to the backing buffer at the time the dquot is flushed to the backing buffer. If we modify the dquot directly in the backing buffer, calculate the CRC immediately after the modification is complete. Hence the dquot in the on-disk buffer should always have a valid CRC. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 6fcdc59de28817d1fbf1bd58cc01f4f3fac858fb) diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index a41f8bf..044e97a 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -249,8 +249,11 @@ xfs_qm_init_dquot_blk( d->dd_diskdq.d_version = XFS_DQUOT_VERSION; d->dd_diskdq.d_id = cpu_to_be32(curid); d->dd_diskdq.d_flags = type; - if (xfs_sb_version_hascrc(&mp->m_sb)) + if (xfs_sb_version_hascrc(&mp->m_sb)) { uuid_copy(&d->dd_uuid, &mp->m_sb.sb_uuid); + xfs_update_cksum((char *)d, sizeof(struct xfs_dqblk), + XFS_DQUOT_CRC_OFF); + } } xfs_trans_dquot_buf(tp, bp, @@ -286,23 +289,6 @@ xfs_dquot_set_prealloc_limits(struct xfs_dquot *dqp) dqp->q_low_space[XFS_QLOWSP_5_PCNT] = space * 5; } -STATIC void -xfs_dquot_buf_calc_crc( - struct xfs_mount *mp, - struct xfs_buf *bp) -{ - struct xfs_dqblk *d = (struct xfs_dqblk *)bp->b_addr; - int i; - - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return; - - for (i = 0; i < mp->m_quotainfo->qi_dqperchunk; i++, d++) { - xfs_update_cksum((char *)d, sizeof(struct xfs_dqblk), - offsetof(struct xfs_dqblk, dd_crc)); - } -} - STATIC bool xfs_dquot_buf_verify_crc( struct xfs_mount *mp, @@ -328,12 +314,11 @@ xfs_dquot_buf_verify_crc( for (i = 0; i < ndquots; i++, d++) { if (!xfs_verify_cksum((char *)d, sizeof(struct xfs_dqblk), - offsetof(struct xfs_dqblk, dd_crc))) + XFS_DQUOT_CRC_OFF)) return false; if (!uuid_equal(&d->dd_uuid, &mp->m_sb.sb_uuid)) return false; } - return true; } @@ -393,6 +378,11 @@ xfs_dquot_buf_read_verify( } } +/* + * we don't calculate the CRC here as that is done when the dquot is flushed to + * the buffer after the update is done. This ensures that the dquot in the + * buffer always has an up-to-date CRC value. + */ void xfs_dquot_buf_write_verify( struct xfs_buf *bp) @@ -404,7 +394,6 @@ xfs_dquot_buf_write_verify( xfs_buf_ioerror(bp, EFSCORRUPTED); return; } - xfs_dquot_buf_calc_crc(mp, bp); } const struct xfs_buf_ops xfs_dquot_buf_ops = { @@ -1151,11 +1140,17 @@ xfs_qm_dqflush( * copy the lsn into the on-disk dquot now while we have the in memory * dquot here. This can't be done later in the write verifier as we * can't get access to the log item at that point in time. + * + * We also calculate the CRC here so that the on-disk dquot in the + * buffer always has a valid CRC. This ensures there is no possibility + * of a dquot without an up-to-date CRC getting to disk. */ if (xfs_sb_version_hascrc(&mp->m_sb)) { struct xfs_dqblk *dqb = (struct xfs_dqblk *)ddqp; dqb->dd_lsn = cpu_to_be64(dqp->q_logitem.qli_item.li_lsn); + xfs_update_cksum((char *)dqb, sizeof(struct xfs_dqblk), + XFS_DQUOT_CRC_OFF); } /* diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index d9e4d3c..d6204d1 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2266,6 +2266,12 @@ xfs_qm_dqcheck( d->dd_diskdq.d_flags = type; d->dd_diskdq.d_id = cpu_to_be32(id); + if (xfs_sb_version_hascrc(&mp->m_sb)) { + uuid_copy(&d->dd_uuid, &mp->m_sb.sb_uuid); + xfs_update_cksum((char *)d, sizeof(struct xfs_dqblk), + XFS_DQUOT_CRC_OFF); + } + return errs; } @@ -2793,6 +2799,10 @@ xlog_recover_dquot_pass2( } memcpy(ddq, recddq, item->ri_buf[1].i_len); + if (xfs_sb_version_hascrc(&mp->m_sb)) { + xfs_update_cksum((char *)ddq, sizeof(struct xfs_dqblk), + XFS_DQUOT_CRC_OFF); + } ASSERT(dq_f->qlf_size == 2); ASSERT(bp->b_target->bt_mount == mp); diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index f41702b..b75c9bb 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -41,6 +41,7 @@ #include "xfs_qm.h" #include "xfs_trace.h" #include "xfs_icache.h" +#include "xfs_cksum.h" /* * The global quota manager. There is only one of these for the entire @@ -839,7 +840,7 @@ xfs_qm_reset_dqcounts( xfs_dqid_t id, uint type) { - xfs_disk_dquot_t *ddq; + struct xfs_dqblk *dqb; int j; trace_xfs_reset_dqcounts(bp, _RET_IP_); @@ -853,8 +854,12 @@ xfs_qm_reset_dqcounts( do_div(j, sizeof(xfs_dqblk_t)); ASSERT(mp->m_quotainfo->qi_dqperchunk == j); #endif - ddq = bp->b_addr; + dqb = bp->b_addr; for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { + struct xfs_disk_dquot *ddq; + + ddq = (struct xfs_disk_dquot *)&dqb[j]; + /* * Do a sanity check, and if needed, repair the dqblk. Don't * output any warnings because it's perfectly possible to @@ -871,7 +876,12 @@ xfs_qm_reset_dqcounts( ddq->d_bwarns = 0; ddq->d_iwarns = 0; ddq->d_rtbwarns = 0; - ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); + + if (xfs_sb_version_hascrc(&mp->m_sb)) { + xfs_update_cksum((char *)&dqb[j], + sizeof(struct xfs_dqblk), + XFS_DQUOT_CRC_OFF); + } } } @@ -907,19 +917,29 @@ xfs_qm_dqiter_bufs( XFS_FSB_TO_DADDR(mp, bno), mp->m_quotainfo->qi_dqchunklen, 0, &bp, &xfs_dquot_buf_ops); - if (error) - break; /* - * XXX(hch): need to figure out if it makes sense to validate - * the CRC here. + * CRC and validation errors will return a EFSCORRUPTED here. If + * this occurs, re-read without CRC validation so that we can + * repair the damage via xfs_qm_reset_dqcounts(). This process + * will leave a trace in the log indicating corruption has + * been detected. */ + if (error == EFSCORRUPTED) { + error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, + XFS_FSB_TO_DADDR(mp, bno), + mp->m_quotainfo->qi_dqchunklen, 0, &bp, + NULL); + } + + if (error) + break; + xfs_qm_reset_dqcounts(mp, bp, firstid, type); xfs_buf_delwri_queue(bp, buffer_list); xfs_buf_relse(bp); - /* - * goto the next block. - */ + + /* goto the next block. */ bno++; firstid += mp->m_quotainfo->qi_dqperchunk; } diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index c61e31c..c38068f 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -87,6 +87,8 @@ typedef struct xfs_dqblk { uuid_t dd_uuid; /* location information */ } xfs_dqblk_t; +#define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc) + /* * flags for q_flags field in the dquot. */ -- cgit v0.10.2 From ea929536a43226a01d1a73ac8b14d52e81163bd4 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 3 Jun 2013 15:28:49 +1000 Subject: xfs: fix remote attribute invalidation for a leaf When invalidating an attribute leaf block block, there might be remote attributes that it points to. With the recent rework of the remote attribute format, we have to make sure we calculate the length of the attribute correctly. We aren't doing that in xfs_attr3_leaf_inactive(), so fix it. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers (cherry picked from commit 59913f14dfe8eb772ff93eb442947451b4416329) diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index d788302..31d3cd1 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -3258,7 +3258,7 @@ xfs_attr3_leaf_inactive( name_rmt = xfs_attr3_leaf_name_remote(leaf, i); if (name_rmt->valueblk) { lp->valueblk = be32_to_cpu(name_rmt->valueblk); - lp->valuelen = XFS_B_TO_FSB(dp->i_mount, + lp->valuelen = xfs_attr3_rmt_blocks(dp->i_mount, be32_to_cpu(name_rmt->valuelen)); lp++; } -- cgit v0.10.2 From 75406170751b4de88a01f73dda56efa617ddd5d7 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 5 Jun 2013 12:09:07 +1000 Subject: xfs: fix log recovery transaction item reordering There are several constraints that inode allocation and unlink logging impose on log recovery. These all stem from the fact that inode alloc/unlink are logged in buffers, but all other inode changes are logged in inode items. Hence there are ordering constraints that recovery must follow to ensure the correct result occurs. As it turns out, this ordering has been working mostly by chance than good management. The existing code moves all buffers except cancelled buffers to the head of the list, and everything else to the tail of the list. The problem with this is that is interleaves inode items with the buffer cancellation items, and hence whether the inode item in an cancelled buffer gets replayed is essentially left to chance. Further, this ordering causes problems for log recovery when inode CRCs are enabled. It typically replays the inode unlink buffer long before it replays the inode core changes, and so the CRC recorded in an unlink buffer is going to be invalid and hence any attempt to validate the inode in the buffer is going to fail. Hence we really need to enforce the ordering that the inode alloc/unlink code has expected log recovery to have since inode chunk de-allocation was introduced back in 2003... Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers (cherry picked from commit a775ad778073d55744ed6709ccede36310638911) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index d6204d1..83088d9 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1599,10 +1599,43 @@ xlog_recover_add_to_trans( } /* - * Sort the log items in the transaction. Cancelled buffers need - * to be put first so they are processed before any items that might - * modify the buffers. If they are cancelled, then the modifications - * don't need to be replayed. + * Sort the log items in the transaction. + * + * The ordering constraints are defined by the inode allocation and unlink + * behaviour. The rules are: + * + * 1. Every item is only logged once in a given transaction. Hence it + * represents the last logged state of the item. Hence ordering is + * dependent on the order in which operations need to be performed so + * required initial conditions are always met. + * + * 2. Cancelled buffers are recorded in pass 1 in a separate table and + * there's nothing to replay from them so we can simply cull them + * from the transaction. However, we can't do that until after we've + * replayed all the other items because they may be dependent on the + * cancelled buffer and replaying the cancelled buffer can remove it + * form the cancelled buffer table. Hence they have tobe done last. + * + * 3. Inode allocation buffers must be replayed before inode items that + * read the buffer and replay changes into it. + * + * 4. Inode unlink buffers must be replayed after inode items are replayed. + * This ensures that inodes are completely flushed to the inode buffer + * in a "free" state before we remove the unlinked inode list pointer. + * + * Hence the ordering needs to be inode allocation buffers first, inode items + * second, inode unlink buffers third and cancelled buffers last. + * + * But there's a problem with that - we can't tell an inode allocation buffer + * apart from a regular buffer, so we can't separate them. We can, however, + * tell an inode unlink buffer from the others, and so we can separate them out + * from all the other buffers and move them to last. + * + * Hence, 4 lists, in order from head to tail: + * - buffer_list for all buffers except cancelled/inode unlink buffers + * - item_list for all non-buffer items + * - inode_buffer_list for inode unlink buffers + * - cancel_list for the cancelled buffers */ STATIC int xlog_recover_reorder_trans( @@ -1612,6 +1645,10 @@ xlog_recover_reorder_trans( { xlog_recover_item_t *item, *n; LIST_HEAD(sort_list); + LIST_HEAD(cancel_list); + LIST_HEAD(buffer_list); + LIST_HEAD(inode_buffer_list); + LIST_HEAD(inode_list); list_splice_init(&trans->r_itemq, &sort_list); list_for_each_entry_safe(item, n, &sort_list, ri_list) { @@ -1619,12 +1656,18 @@ xlog_recover_reorder_trans( switch (ITEM_TYPE(item)) { case XFS_LI_BUF: - if (!(buf_f->blf_flags & XFS_BLF_CANCEL)) { + if (buf_f->blf_flags & XFS_BLF_CANCEL) { trace_xfs_log_recover_item_reorder_head(log, trans, item, pass); - list_move(&item->ri_list, &trans->r_itemq); + list_move(&item->ri_list, &cancel_list); break; } + if (buf_f->blf_flags & XFS_BLF_INODE_BUF) { + list_move(&item->ri_list, &inode_buffer_list); + break; + } + list_move_tail(&item->ri_list, &buffer_list); + break; case XFS_LI_INODE: case XFS_LI_DQUOT: case XFS_LI_QUOTAOFF: @@ -1632,7 +1675,7 @@ xlog_recover_reorder_trans( case XFS_LI_EFI: trace_xfs_log_recover_item_reorder_tail(log, trans, item, pass); - list_move_tail(&item->ri_list, &trans->r_itemq); + list_move_tail(&item->ri_list, &inode_list); break; default: xfs_warn(log->l_mp, @@ -1643,6 +1686,14 @@ xlog_recover_reorder_trans( } } ASSERT(list_empty(&sort_list)); + if (!list_empty(&buffer_list)) + list_splice(&buffer_list, &trans->r_itemq); + if (!list_empty(&inode_list)) + list_splice_tail(&inode_list, &trans->r_itemq); + if (!list_empty(&inode_buffer_list)) + list_splice_tail(&inode_buffer_list, &trans->r_itemq); + if (!list_empty(&cancel_list)) + list_splice_tail(&cancel_list, &trans->r_itemq); return 0; } -- cgit v0.10.2 From ad868afddb908a5d4015c6b7637721b48fb9c8f9 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 5 Jun 2013 12:09:08 +1000 Subject: xfs: inode unlinked list needs to recalculate the inode CRC The inode unlinked list manipulations operate directly on the inode buffer, and so bypass the inode CRC calculation mechanisms. Hence an inode on the unlinked list has an invalid CRC. Fix this by recalculating the CRC whenever we modify an unlinked list pointer in an inode, ncluding during log recovery. This is trivial to do and results in unlinked list operations always leaving a consistent inode in the buffer. Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers (cherry picked from commit 0a32c26e720a8b38971d0685976f4a7d63f9e2ef) diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index efbe1ac..7f7be5f 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -1638,6 +1638,10 @@ xfs_iunlink( dip->di_next_unlinked = agi->agi_unlinked[bucket_index]; offset = ip->i_imap.im_boffset + offsetof(xfs_dinode_t, di_next_unlinked); + + /* need to recalc the inode CRC if appropriate */ + xfs_dinode_calc_crc(mp, dip); + xfs_trans_inode_buf(tp, ibp); xfs_trans_log_buf(tp, ibp, offset, (offset + sizeof(xfs_agino_t) - 1)); @@ -1723,6 +1727,10 @@ xfs_iunlink_remove( dip->di_next_unlinked = cpu_to_be32(NULLAGINO); offset = ip->i_imap.im_boffset + offsetof(xfs_dinode_t, di_next_unlinked); + + /* need to recalc the inode CRC if appropriate */ + xfs_dinode_calc_crc(mp, dip); + xfs_trans_inode_buf(tp, ibp); xfs_trans_log_buf(tp, ibp, offset, (offset + sizeof(xfs_agino_t) - 1)); @@ -1796,6 +1804,10 @@ xfs_iunlink_remove( dip->di_next_unlinked = cpu_to_be32(NULLAGINO); offset = ip->i_imap.im_boffset + offsetof(xfs_dinode_t, di_next_unlinked); + + /* need to recalc the inode CRC if appropriate */ + xfs_dinode_calc_crc(mp, dip); + xfs_trans_inode_buf(tp, ibp); xfs_trans_log_buf(tp, ibp, offset, (offset + sizeof(xfs_agino_t) - 1)); @@ -1809,6 +1821,10 @@ xfs_iunlink_remove( last_dip->di_next_unlinked = cpu_to_be32(next_agino); ASSERT(next_agino != 0); offset = last_offset + offsetof(xfs_dinode_t, di_next_unlinked); + + /* need to recalc the inode CRC if appropriate */ + xfs_dinode_calc_crc(mp, last_dip); + xfs_trans_inode_buf(tp, last_ibp); xfs_trans_log_buf(tp, last_ibp, offset, (offset + sizeof(xfs_agino_t) - 1)); diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 83088d9..45a85ff 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1912,6 +1912,15 @@ xlog_recover_do_inode_buffer( buffer_nextp = (xfs_agino_t *)xfs_buf_offset(bp, next_unlinked_offset); *buffer_nextp = *logged_nextp; + + /* + * If necessary, recalculate the CRC in the on-disk inode. We + * have to leave the inode in a consistent state for whoever + * reads it next.... + */ + xfs_dinode_calc_crc(mp, (struct xfs_dinode *) + xfs_buf_offset(bp, i * mp->m_sb.sb_inodesize)); + } return 0; -- cgit v0.10.2 From f763fd440e094be37b38596ee14f1d64caa9bf9c Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 5 Jun 2013 12:09:09 +1000 Subject: xfs: disable noattr2/attr2 mount options for CRC enabled filesystems attr2 format is always enabled for v5 superblock filesystems, so the mount options to enable or disable it need to be cause mount errors. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Ben Myers (cherry picked from commit d3eaace84e40bf946129e516dcbd617173c1cf14) diff --git a/Documentation/filesystems/xfs.txt b/Documentation/filesystems/xfs.txt index 3e4b3dd..83577f0 100644 --- a/Documentation/filesystems/xfs.txt +++ b/Documentation/filesystems/xfs.txt @@ -33,6 +33,9 @@ When mounting an XFS filesystem, the following options are accepted. removing extended attributes) the on-disk superblock feature bit field will be updated to reflect this format being in use. + CRC enabled filesystems always use the attr2 format, and so + will reject the noattr2 mount option if it is set. + barrier Enables the use of block layer write barriers for writes into the journal and unwritten extent conversion. This allows for diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index ea341ce..3033ba5 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1373,6 +1373,17 @@ xfs_finish_flags( } /* + * V5 filesystems always use attr2 format for attributes. + */ + if (xfs_sb_version_hascrc(&mp->m_sb) && + (mp->m_flags & XFS_MOUNT_NOATTR2)) { + xfs_warn(mp, +"Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.", + MNTOPT_NOATTR2, MNTOPT_ATTR2); + return XFS_ERROR(EINVAL); + } + + /* * mkfs'ed attr2 will turn on attr2 mount unless explicitly * told by noattr2 to turn it off */ -- cgit v0.10.2 From 0a8aa1939777dd114479677f0044652c1fd72398 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 5 Jun 2013 12:09:10 +1000 Subject: xfs: increase number of ACL entries for V5 superblocks The limit of 25 ACL entries is arbitrary, but baked into the on-disk format. For version 5 superblocks, increase it to the maximum nuber of ACLs that can fit into a single xattr. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers (cherry picked from commit 5c87d4bc1a86bd6e6754ac3d6e111d776ddcfe57) diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 1d32f1d..306d883 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -21,6 +21,8 @@ #include "xfs_bmap_btree.h" #include "xfs_inode.h" #include "xfs_vnodeops.h" +#include "xfs_sb.h" +#include "xfs_mount.h" #include "xfs_trace.h" #include #include @@ -34,7 +36,9 @@ */ STATIC struct posix_acl * -xfs_acl_from_disk(struct xfs_acl *aclp) +xfs_acl_from_disk( + struct xfs_acl *aclp, + int max_entries) { struct posix_acl_entry *acl_e; struct posix_acl *acl; @@ -42,7 +46,7 @@ xfs_acl_from_disk(struct xfs_acl *aclp) unsigned int count, i; count = be32_to_cpu(aclp->acl_cnt); - if (count > XFS_ACL_MAX_ENTRIES) + if (count > max_entries) return ERR_PTR(-EFSCORRUPTED); acl = posix_acl_alloc(count, GFP_KERNEL); @@ -108,9 +112,9 @@ xfs_get_acl(struct inode *inode, int type) struct xfs_inode *ip = XFS_I(inode); struct posix_acl *acl; struct xfs_acl *xfs_acl; - int len = sizeof(struct xfs_acl); unsigned char *ea_name; int error; + int len; acl = get_cached_acl(inode, type); if (acl != ACL_NOT_CACHED) @@ -133,8 +137,8 @@ xfs_get_acl(struct inode *inode, int type) * If we have a cached ACLs value just return it, not need to * go out to the disk. */ - - xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL); + len = XFS_ACL_MAX_SIZE(ip->i_mount); + xfs_acl = kzalloc(len, GFP_KERNEL); if (!xfs_acl) return ERR_PTR(-ENOMEM); @@ -153,7 +157,7 @@ xfs_get_acl(struct inode *inode, int type) goto out; } - acl = xfs_acl_from_disk(xfs_acl); + acl = xfs_acl_from_disk(xfs_acl, XFS_ACL_MAX_ENTRIES(ip->i_mount)); if (IS_ERR(acl)) goto out; @@ -189,16 +193,17 @@ xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) if (acl) { struct xfs_acl *xfs_acl; - int len; + int len = XFS_ACL_MAX_SIZE(ip->i_mount); - xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL); + xfs_acl = kzalloc(len, GFP_KERNEL); if (!xfs_acl) return -ENOMEM; xfs_acl_to_disk(xfs_acl, acl); - len = sizeof(struct xfs_acl) - - (sizeof(struct xfs_acl_entry) * - (XFS_ACL_MAX_ENTRIES - acl->a_count)); + + /* subtract away the unused acl entries */ + len -= sizeof(struct xfs_acl_entry) * + (XFS_ACL_MAX_ENTRIES(ip->i_mount) - acl->a_count); error = -xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl, len, ATTR_ROOT); @@ -243,7 +248,7 @@ xfs_set_mode(struct inode *inode, umode_t mode) static int xfs_acl_exists(struct inode *inode, unsigned char *name) { - int len = sizeof(struct xfs_acl); + int len = XFS_ACL_MAX_SIZE(XFS_M(inode->i_sb)); return (xfs_attr_get(XFS_I(inode), name, NULL, &len, ATTR_ROOT|ATTR_KERNOVAL) == 0); @@ -379,7 +384,7 @@ xfs_xattr_acl_set(struct dentry *dentry, const char *name, goto out_release; error = -EINVAL; - if (acl->a_count > XFS_ACL_MAX_ENTRIES) + if (acl->a_count > XFS_ACL_MAX_ENTRIES(XFS_M(inode->i_sb))) goto out_release; if (type == ACL_TYPE_ACCESS) { diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h index 39632d9..4016a56 100644 --- a/fs/xfs/xfs_acl.h +++ b/fs/xfs/xfs_acl.h @@ -22,19 +22,36 @@ struct inode; struct posix_acl; struct xfs_inode; -#define XFS_ACL_MAX_ENTRIES 25 #define XFS_ACL_NOT_PRESENT (-1) /* On-disk XFS access control list structure */ +struct xfs_acl_entry { + __be32 ae_tag; + __be32 ae_id; + __be16 ae_perm; + __be16 ae_pad; /* fill the implicit hole in the structure */ +}; + struct xfs_acl { - __be32 acl_cnt; - struct xfs_acl_entry { - __be32 ae_tag; - __be32 ae_id; - __be16 ae_perm; - } acl_entry[XFS_ACL_MAX_ENTRIES]; + __be32 acl_cnt; + struct xfs_acl_entry acl_entry[0]; }; +/* + * The number of ACL entries allowed is defined by the on-disk format. + * For v4 superblocks, that is limited to 25 entries. For v5 superblocks, it is + * limited only by the maximum size of the xattr that stores the information. + */ +#define XFS_ACL_MAX_ENTRIES(mp) \ + (xfs_sb_version_hascrc(&mp->m_sb) \ + ? (XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \ + sizeof(struct xfs_acl_entry) \ + : 25) + +#define XFS_ACL_MAX_SIZE(mp) \ + (sizeof(struct xfs_acl) + \ + sizeof(struct xfs_acl_entry) * XFS_ACL_MAX_ENTRIES((mp))) + /* On-disk XFS extended attribute names */ #define SGI_ACL_FILE (unsigned char *)"SGI_ACL_FILE" #define SGI_ACL_DEFAULT (unsigned char *)"SGI_ACL_DEFAULT" -- cgit v0.10.2 From 9eecf22d2b375b9064a20421c6c307b760b03d46 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 6 Jun 2013 13:32:47 +0200 Subject: USB: whiteheat: fix broken port configuration When configuring the port (e.g. set_termios) the port minor number rather than the port number was used in the request (and they only coincide for minor number 0). Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index b9fca35..347caad 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -649,7 +649,7 @@ static void firm_setup_port(struct tty_struct *tty) struct whiteheat_port_settings port_settings; unsigned int cflag = tty->termios.c_cflag; - port_settings.port = port->number + 1; + port_settings.port = port->number - port->serial->minor + 1; /* get the byte size */ switch (cflag & CSIZE) { -- cgit v0.10.2 From b8a24e6281d37243c06b9497dcbfaa98c1e2ad35 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Thu, 6 Jun 2013 12:57:24 +0200 Subject: USB: option: blacklist network interface on Huawei E1820 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The mode used by Windows for the Huawei E1820 will use the same ff/ff/ff class codes for both serial and network functions. Reported-by: Graham Inggs Signed-off-by: Bjørn Mork Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 93d02bc..66314c3 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -593,6 +593,8 @@ static const struct usb_device_id option_ids[] = { .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x14ac, 0xff, 0xff, 0xff), /* Huawei E1820 */ + .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4605, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, { USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0xff, 0xff) }, -- cgit v0.10.2 From 73228a0538a70ebc4547bd09dee8971360dc1d87 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 5 Jun 2013 15:26:27 -0500 Subject: USB: option,zte_ev: move most ZTE CDMA devices to zte_ev Per some ZTE Linux drivers I found for the AC2716, the following patch moves most ZTE CDMA devices from option to zte_ev. The blacklist stuff that option does is not required with zte_ev, because it doesn't implement any of the send_setup hooks which the blacklist suppressed. I did not move the 2718 over because I could not find any ZTE Linux drivers for that device, nor even any Windows drivers. Signed-off-by: Dan Williams Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 66314c3..bd4323d 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -250,13 +250,7 @@ static void option_instat_callback(struct urb *urb); #define ZTE_PRODUCT_MF622 0x0001 #define ZTE_PRODUCT_MF628 0x0015 #define ZTE_PRODUCT_MF626 0x0031 -#define ZTE_PRODUCT_CDMA_TECH 0xfffe -#define ZTE_PRODUCT_AC8710 0xfff1 -#define ZTE_PRODUCT_AC2726 0xfff5 -#define ZTE_PRODUCT_AC8710T 0xffff #define ZTE_PRODUCT_MC2718 0xffe8 -#define ZTE_PRODUCT_AD3812 0xffeb -#define ZTE_PRODUCT_MC2716 0xffed #define BENQ_VENDOR_ID 0x04a5 #define BENQ_PRODUCT_H10 0x4068 @@ -495,18 +489,10 @@ static const struct option_blacklist_info zte_k3765_z_blacklist = { .reserved = BIT(4), }; -static const struct option_blacklist_info zte_ad3812_z_blacklist = { - .sendsetup = BIT(0) | BIT(1) | BIT(2), -}; - static const struct option_blacklist_info zte_mc2718_z_blacklist = { .sendsetup = BIT(1) | BIT(2) | BIT(3) | BIT(4), }; -static const struct option_blacklist_info zte_mc2716_z_blacklist = { - .sendsetup = BIT(1) | BIT(2) | BIT(3), -}; - static const struct option_blacklist_info huawei_cdc12_blacklist = { .reserved = BIT(1) | BIT(2), }; @@ -799,7 +785,6 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_INTERFACE_CLASS(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1012, 0xff) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) }, - { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6280) }, /* BP3-USB & BP3-EXT HSDPA */ @@ -1201,16 +1186,9 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0178, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710T, 0xff, 0xff, 0xff) }, + /* NOTE: most ZTE CDMA devices should be driven by zte_ev, not option */ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2718, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_mc2718_z_blacklist }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AD3812, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) }, diff --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c index 870e01e..fca4c75 100644 --- a/drivers/usb/serial/zte_ev.c +++ b/drivers/usb/serial/zte_ev.c @@ -273,11 +273,29 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) } static const struct usb_device_id id_table[] = { - { USB_DEVICE(0x19d2, 0xffff) }, /* AC8700 */ - { USB_DEVICE(0x19d2, 0xfffe) }, - { USB_DEVICE(0x19d2, 0xfffd) }, /* MG880 */ + /* AC8710, AC8710T */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffff, 0xff, 0xff, 0xff) }, + /* AC8700 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfffe, 0xff, 0xff, 0xff) }, + /* MG880 */ + { USB_DEVICE(0x19d2, 0xfffd) }, + { USB_DEVICE(0x19d2, 0xfffc) }, + { USB_DEVICE(0x19d2, 0xfffb) }, + /* AC2726, AC8710_V3 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfff1, 0xff, 0xff, 0xff) }, + { USB_DEVICE(0x19d2, 0xfff6) }, + { USB_DEVICE(0x19d2, 0xfff7) }, + { USB_DEVICE(0x19d2, 0xfff8) }, + { USB_DEVICE(0x19d2, 0xfff9) }, + { USB_DEVICE(0x19d2, 0xffee) }, + /* AC2716, MC2716 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffed, 0xff, 0xff, 0xff) }, + /* AD3812 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffeb, 0xff, 0xff, 0xff) }, + { USB_DEVICE(0x19d2, 0xffec) }, { USB_DEVICE(0x05C6, 0x3197) }, { USB_DEVICE(0x05C6, 0x6000) }, + { USB_DEVICE(0x05C6, 0x9008) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); -- cgit v0.10.2 From f17a5194859a82afe4164e938b92035b86c55794 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Thu, 30 May 2013 21:10:37 -0400 Subject: tracing: Use current_uid() for critical time tracing The irqsoff tracer records the max time that interrupts are disabled. There are hooks in the assembly code that calls back into the tracer when interrupts are disabled or enabled. When they are enabled, the tracer checks if the amount of time they were disabled is larger than the previous recorded max interrupts off time. If it is, it creates a snapshot of the currently running trace to store where the last largest interrupts off time was held and how it happened. During testing, this RCU lockdep dump appeared: [ 1257.829021] =============================== [ 1257.829021] [ INFO: suspicious RCU usage. ] [ 1257.829021] 3.10.0-rc1-test+ #171 Tainted: G W [ 1257.829021] ------------------------------- [ 1257.829021] /home/rostedt/work/git/linux-trace.git/include/linux/rcupdate.h:780 rcu_read_lock() used illegally while idle! [ 1257.829021] [ 1257.829021] other info that might help us debug this: [ 1257.829021] [ 1257.829021] [ 1257.829021] RCU used illegally from idle CPU! [ 1257.829021] rcu_scheduler_active = 1, debug_locks = 0 [ 1257.829021] RCU used illegally from extended quiescent state! [ 1257.829021] 2 locks held by trace-cmd/4831: [ 1257.829021] #0: (max_trace_lock){......}, at: [] stop_critical_timing+0x1a3/0x209 [ 1257.829021] #1: (rcu_read_lock){.+.+..}, at: [] __update_max_tr+0x88/0x1ee [ 1257.829021] [ 1257.829021] stack backtrace: [ 1257.829021] CPU: 3 PID: 4831 Comm: trace-cmd Tainted: G W 3.10.0-rc1-test+ #171 [ 1257.829021] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M., BIOS SDBLI944.86P 05/08/2007 [ 1257.829021] 0000000000000001 ffff880065f49da8 ffffffff8153dd2b ffff880065f49dd8 [ 1257.829021] ffffffff81092a00 ffff88006bd78680 ffff88007add7500 0000000000000003 [ 1257.829021] ffff88006bd78680 ffff880065f49e18 ffffffff810daebf ffffffff810dae5a [ 1257.829021] Call Trace: [ 1257.829021] [] dump_stack+0x19/0x1b [ 1257.829021] [] lockdep_rcu_suspicious+0x109/0x112 [ 1257.829021] [] __update_max_tr+0xed/0x1ee [ 1257.829021] [] ? __update_max_tr+0x88/0x1ee [ 1257.829021] [] ? user_enter+0xfd/0x107 [ 1257.829021] [] update_max_tr_single+0x11d/0x12d [ 1257.829021] [] ? user_enter+0xfd/0x107 [ 1257.829021] [] stop_critical_timing+0x141/0x209 [ 1257.829021] [] ? trace_hardirqs_on+0xd/0xf [ 1257.829021] [] ? user_enter+0xfd/0x107 [ 1257.829021] [] time_hardirqs_on+0x2a/0x2f [ 1257.829021] [] ? user_enter+0xfd/0x107 [ 1257.829021] [] trace_hardirqs_on_caller+0x16/0x197 [ 1257.829021] [] trace_hardirqs_on+0xd/0xf [ 1257.829021] [] user_enter+0xfd/0x107 [ 1257.829021] [] do_notify_resume+0x92/0x97 [ 1257.829021] [] int_signal+0x12/0x17 What happened was entering into the user code, the interrupts were enabled and a max interrupts off was recorded. The trace buffer was saved along with various information about the task: comm, pid, uid, priority, etc. The uid is recorded with task_uid(tsk). But this is a macro that uses rcu_read_lock() to retrieve the data, and this happened to happen where RCU is blind (user_enter). As only the preempt and irqs off tracers can have this happen, and they both only have the tsk == current, if tsk == current, use current_uid() instead of task_uid(), as current_uid() does not use RCU as only current can change its uid. This fixes the RCU suspicious splat. Signed-off-by: Steven Rostedt diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 4d79485..1a41023 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -843,7 +843,15 @@ __update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu) memcpy(max_data->comm, tsk->comm, TASK_COMM_LEN); max_data->pid = tsk->pid; - max_data->uid = task_uid(tsk); + /* + * If tsk == current, then use current_uid(), as that does not use + * RCU. The irq tracer can be called out of RCU scope. + */ + if (tsk == current) + max_data->uid = current_uid(); + else + max_data->uid = task_uid(tsk); + max_data->nice = tsk->static_prio - 20 - MAX_RT_PRIO; max_data->policy = tsk->policy; max_data->rt_priority = tsk->rt_priority; -- cgit v0.10.2 From 4089fe95bfed295c8ad38251d5fe02b6b0ba684c Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Thu, 6 Jun 2013 19:00:46 +0200 Subject: ARM: Kirkwood: handle mv88f6282 cpu in __kirkwood_variant(). MPP_F6281_MASK would be previously be returned when on mv88f6282, which would disallow some valid MPP configurations. Commit 830f8b91 (arm: plat-orion: fix printing of "MPP config unavailable on this hardware") made this problem visible as an invalid MPP configuration is now correctly detected and not applied. Signed-off-by: Nicolas Schichan Cc: # v3.9.x Signed-off-by: Jason Cooper diff --git a/arch/arm/mach-kirkwood/mpp.c b/arch/arm/mach-kirkwood/mpp.c index 827cde4..e96fd71 100644 --- a/arch/arm/mach-kirkwood/mpp.c +++ b/arch/arm/mach-kirkwood/mpp.c @@ -22,9 +22,10 @@ static unsigned int __init kirkwood_variant(void) kirkwood_pcie_id(&dev, &rev); - if ((dev == MV88F6281_DEV_ID && rev >= MV88F6281_REV_A0) || - (dev == MV88F6282_DEV_ID)) + if (dev == MV88F6281_DEV_ID && rev >= MV88F6281_REV_A0) return MPP_F6281_MASK; + if (dev == MV88F6282_DEV_ID) + return MPP_F6282_MASK; if (dev == MV88F6192_DEV_ID && rev >= MV88F6192_REV_A0) return MPP_F6192_MASK; if (dev == MV88F6180_DEV_ID) -- cgit v0.10.2 From a7526eb5d06b0084ef12d7b168d008fcf516caab Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Wed, 5 Jun 2013 19:38:26 +0000 Subject: net: Unbreak compat_sys_{send,recv}msg I broke them in this commit: commit 1be374a0518a288147c6a7398792583200a67261 Author: Andy Lutomirski Date: Wed May 22 14:07:44 2013 -0700 net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg This patch adds __sys_sendmsg and __sys_sendmsg as common helpers that accept MSG_CMSG_COMPAT and blocks MSG_CMSG_COMPAT at the syscall entrypoints. It also reverts some unnecessary checks in sys_socketcall. Apparently I was suffering from underscore blindness the first time around. Signed-off-by: Andy Lutomirski Tested-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/include/linux/socket.h b/include/linux/socket.h index 33bf2df..b10ce4b 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -320,6 +320,9 @@ extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); struct timespec; +/* The __sys_...msg variants allow MSG_CMSG_COMPAT */ +extern long __sys_recvmsg(int fd, struct msghdr __user *msg, unsigned flags); +extern long __sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags); extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct timespec *timeout); extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, diff --git a/net/compat.c b/net/compat.c index 79ae884..f0a1ba6 100644 --- a/net/compat.c +++ b/net/compat.c @@ -734,19 +734,25 @@ static unsigned char nas[21] = { asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags) { - return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + return __sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); } asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags) { + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, flags | MSG_CMSG_COMPAT); } asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags) { - return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + return __sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); } asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len, unsigned int flags) @@ -768,6 +774,9 @@ asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, int datagrams; struct timespec ktspec; + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + if (COMPAT_USE_64BIT_TIME) return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, flags | MSG_CMSG_COMPAT, diff --git a/net/socket.c b/net/socket.c index 9ff6366..4ca1526 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1956,7 +1956,7 @@ struct used_address { unsigned int name_len; }; -static int __sys_sendmsg(struct socket *sock, struct msghdr __user *msg, +static int ___sys_sendmsg(struct socket *sock, struct msghdr __user *msg, struct msghdr *msg_sys, unsigned int flags, struct used_address *used_address) { @@ -2071,26 +2071,30 @@ out: * BSD sendmsg interface */ -SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned int, flags) +long __sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags) { int fput_needed, err; struct msghdr msg_sys; struct socket *sock; - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; - sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; - err = __sys_sendmsg(sock, msg, &msg_sys, flags, NULL); + err = ___sys_sendmsg(sock, msg, &msg_sys, flags, NULL); fput_light(sock->file, fput_needed); out: return err; } +SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned int, flags) +{ + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + return __sys_sendmsg(fd, msg, flags); +} + /* * Linux sendmmsg interface */ @@ -2121,15 +2125,16 @@ int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, while (datagrams < vlen) { if (MSG_CMSG_COMPAT & flags) { - err = __sys_sendmsg(sock, (struct msghdr __user *)compat_entry, - &msg_sys, flags, &used_address); + err = ___sys_sendmsg(sock, (struct msghdr __user *)compat_entry, + &msg_sys, flags, &used_address); if (err < 0) break; err = __put_user(err, &compat_entry->msg_len); ++compat_entry; } else { - err = __sys_sendmsg(sock, (struct msghdr __user *)entry, - &msg_sys, flags, &used_address); + err = ___sys_sendmsg(sock, + (struct msghdr __user *)entry, + &msg_sys, flags, &used_address); if (err < 0) break; err = put_user(err, &entry->msg_len); @@ -2158,7 +2163,7 @@ SYSCALL_DEFINE4(sendmmsg, int, fd, struct mmsghdr __user *, mmsg, return __sys_sendmmsg(fd, mmsg, vlen, flags); } -static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg, +static int ___sys_recvmsg(struct socket *sock, struct msghdr __user *msg, struct msghdr *msg_sys, unsigned int flags, int nosec) { struct compat_msghdr __user *msg_compat = @@ -2250,27 +2255,31 @@ out: * BSD recvmsg interface */ -SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, - unsigned int, flags) +long __sys_recvmsg(int fd, struct msghdr __user *msg, unsigned flags) { int fput_needed, err; struct msghdr msg_sys; struct socket *sock; - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; - sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; - err = __sys_recvmsg(sock, msg, &msg_sys, flags, 0); + err = ___sys_recvmsg(sock, msg, &msg_sys, flags, 0); fput_light(sock->file, fput_needed); out: return err; } +SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, + unsigned int, flags) +{ + if (flags & MSG_CMSG_COMPAT) + return -EINVAL; + return __sys_recvmsg(fd, msg, flags); +} + /* * Linux recvmmsg interface */ @@ -2308,17 +2317,18 @@ int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, * No need to ask LSM for more than the first datagram. */ if (MSG_CMSG_COMPAT & flags) { - err = __sys_recvmsg(sock, (struct msghdr __user *)compat_entry, - &msg_sys, flags & ~MSG_WAITFORONE, - datagrams); + err = ___sys_recvmsg(sock, (struct msghdr __user *)compat_entry, + &msg_sys, flags & ~MSG_WAITFORONE, + datagrams); if (err < 0) break; err = __put_user(err, &compat_entry->msg_len); ++compat_entry; } else { - err = __sys_recvmsg(sock, (struct msghdr __user *)entry, - &msg_sys, flags & ~MSG_WAITFORONE, - datagrams); + err = ___sys_recvmsg(sock, + (struct msghdr __user *)entry, + &msg_sys, flags & ~MSG_WAITFORONE, + datagrams); if (err < 0) break; err = put_user(err, &entry->msg_len); @@ -2505,31 +2515,15 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) (int __user *)a[4]); break; case SYS_SENDMSG: - if (a[2] & MSG_CMSG_COMPAT) { - err = -EINVAL; - break; - } err = sys_sendmsg(a0, (struct msghdr __user *)a1, a[2]); break; case SYS_SENDMMSG: - if (a[3] & MSG_CMSG_COMPAT) { - err = -EINVAL; - break; - } err = sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3]); break; case SYS_RECVMSG: - if (a[2] & MSG_CMSG_COMPAT) { - err = -EINVAL; - break; - } err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]); break; case SYS_RECVMMSG: - if (a[3] & MSG_CMSG_COMPAT) { - err = -EINVAL; - break; - } err = sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], (struct timespec __user *)a[4]); break; -- cgit v0.10.2 From 5f1f3d5088316f827591764aa6a5e7161eb514bd Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Thu, 6 Jun 2013 11:21:23 +0200 Subject: arm: mvebu: armada-xp-{gp,openblocks-ax3-4}: specify PCIe range The ranges DT entry needed by the PCIe controller is defined at the SoC .dtsi level. However, some boards have a NOR flash, and to support it, they need to override the SoC-level ranges property to add an additional range. Since PCIe and NOR support came separately, some boards were not properly changed to include the PCIe range in their ranges property at the .dts level. This commit fixes those platforms. Signed-off-by: Thomas Petazzoni Signed-off-by: Jason Cooper diff --git a/arch/arm/boot/dts/armada-xp-gp.dts b/arch/arm/boot/dts/armada-xp-gp.dts index 3ee63d1..76db557 100644 --- a/arch/arm/boot/dts/armada-xp-gp.dts +++ b/arch/arm/boot/dts/armada-xp-gp.dts @@ -39,8 +39,9 @@ }; soc { - ranges = <0 0 0xd0000000 0x100000 - 0xf0000000 0 0xf0000000 0x1000000>; + ranges = <0 0 0xd0000000 0x100000 /* Internal registers 1MiB */ + 0xe0000000 0 0xe0000000 0x8100000 /* PCIe */ + 0xf0000000 0 0xf0000000 0x1000000 /* Device Bus, NOR 16MiB */>; internal-regs { serial@12000 { diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts index 46b7850..fdea75c 100644 --- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts +++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts @@ -27,8 +27,9 @@ }; soc { - ranges = <0 0 0xd0000000 0x100000 - 0xf0000000 0 0xf0000000 0x8000000>; + ranges = <0 0 0xd0000000 0x100000 /* Internal registers 1MiB */ + 0xe0000000 0 0xe0000000 0x8100000 /* PCIe */ + 0xf0000000 0 0xf0000000 0x8000000 /* Device Bus, NOR 128MiB */>; internal-regs { serial@12000 { -- cgit v0.10.2 From 72b5322f11ff0abf6a52b3007486656578d2c982 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Mon, 3 Jun 2013 17:17:15 +0800 Subject: clk: remove notifier from list before freeing it MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The @cn is stay in @clk_notifier_list after it is freed, it cause memory corruption. Example, if @clk is registered(first), unregistered(first), registered(second), unregistered(second). The freed @cn will be used when @clk is registered(second), and the bug will be happened when @clk is unregistered(second): [ 517.040000] clk_notif_dbg clk_notif_dbg.1: clk_notifier_unregister() [ 517.040000] Unable to handle kernel paging request at virtual address 00df3008 [ 517.050000] pgd = ed858000 [ 517.050000] [00df3008] *pgd=00000000 [ 517.060000] Internal error: Oops: 5 [#1] PREEMPT SMP ARM [ 517.060000] Modules linked in: clk_notif_dbg(O-) [last unloaded: clk_notif_dbg] [ 517.060000] CPU: 1 PID: 499 Comm: modprobe Tainted: G O 3.10.0-rc3-00119-ga93cb29-dirty #85 [ 517.060000] task: ee1e0180 ti: ee3e6000 task.ti: ee3e6000 [ 517.060000] PC is at srcu_readers_seq_idx+0x48/0x84 [ 517.060000] LR is at srcu_readers_seq_idx+0x60/0x84 [ 517.060000] pc : [] lr : [] psr: 80070013 [ 517.060000] sp : ee3e7d48 ip : 00000000 fp : ee3e7d6c [ 517.060000] r10: 00000000 r9 : ee3e6000 r8 : 00000000 [ 517.060000] r7 : ed84fe4c r6 : c068ec90 r5 : c068e430 r4 : 00000000 [ 517.060000] r3 : 00df3000 r2 : 00000000 r1 : 00000002 r0 : 00000000 [ 517.060000] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 517.060000] Control: 18c5387d Table: 2d85804a DAC: 00000015 [ 517.060000] Process modprobe (pid: 499, stack limit = 0xee3e6238) [ 517.060000] Stack: (0xee3e7d48 to 0xee3e8000) .... [ 517.060000] [] (srcu_readers_seq_idx+0x48/0x84) from [] (try_check_zero+0x34/0xfc) [ 517.060000] [] (try_check_zero+0x34/0xfc) from [] (srcu_advance_batches+0x58/0x114) [ 517.060000] [] (srcu_advance_batches+0x58/0x114) from [] (__synchronize_srcu+0x114/0x1ac) [ 517.060000] [] (__synchronize_srcu+0x114/0x1ac) from [] (synchronize_srcu+0x2c/0x34) [ 517.060000] [] (synchronize_srcu+0x2c/0x34) from [] (srcu_notifier_chain_unregister+0x68/0x74) [ 517.060000] [] (srcu_notifier_chain_unregister+0x68/0x74) from [] (clk_notifier_unregister+0x7c/0xc0) [ 517.060000] [] (clk_notifier_unregister+0x7c/0xc0) from [] (clk_notif_dbg_remove+0x34/0x9c [clk_notif_dbg]) [ 517.060000] [] (clk_notif_dbg_remove+0x34/0x9c [clk_notif_dbg]) from [] (platform_drv_remove+0x24/0x28) [ 517.060000] [] (platform_drv_remove+0x24/0x28) from [] (__device_release_driver+0x8c/0xd4) [ 517.060000] [] (__device_release_driver+0x8c/0xd4) from [] (driver_detach+0x9c/0xc4) [ 517.060000] [] (driver_detach+0x9c/0xc4) from [] (bus_remove_driver+0xcc/0xfc) [ 517.060000] [] (bus_remove_driver+0xcc/0xfc) from [] (driver_unregister+0x54/0x78) [ 517.060000] [] (driver_unregister+0x54/0x78) from [] (platform_driver_unregister+0x1c/0x20) [ 517.060000] [] (platform_driver_unregister+0x1c/0x20) from [] (clk_notif_dbg_driver_exit+0x14/0x1c [clk_notif_dbg]) [ 517.060000] [] (clk_notif_dbg_driver_exit+0x14/0x1c [clk_notif_dbg]) from [] (SyS_delete_module+0x200/0x28c) [ 517.060000] [] (SyS_delete_module+0x200/0x28c) from [] (ret_fast_syscall+0x0/0x48) [ 517.060000] Code: e5973004 e7911102 e0833001 e2881002 (e7933101) Cc: stable@kernel.org Reported-by: Sören Brinkmann Signed-off-by: Lai Jiangshan Tested-by: Sören Brinkmann Signed-off-by: Mike Turquette [mturquette@linaro.org: shortened $SUBJECT] diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 934cfd1..1144e8c 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -1955,6 +1955,7 @@ int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb) /* XXX the notifier code should handle this better */ if (!cn->notifier_head.head) { srcu_cleanup_notifier_head(&cn->notifier_head); + list_del(&cn->node); kfree(cn); } -- cgit v0.10.2 From 7cd8407d53ef5fb0280fcbe34f42311472f90feb Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 5 Jun 2013 14:01:19 +0200 Subject: ACPI / PM: Do not execute _PS0 for devices without _PSC during initialization Commit b378549 (ACPI / PM: Do not power manage devices in unknown initial states) added code to force devices without _PSC, but having _PS0 defined in the ACPI namespace, into ACPI power state D0 by executing _PS0 for them. That turned out to break Toshiba P870-303, however, so revert that code. References: https://bugzilla.kernel.org/show_bug.cgi?id=58201 Reported-and-tested-by: Jerome Cantenot Tracked-down-by: Lan Tianyu Cc: 3.9+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index bc493aa..318fa32 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -278,11 +278,13 @@ int acpi_bus_init_power(struct acpi_device *device) if (result) return result; } else if (state == ACPI_STATE_UNKNOWN) { - /* No power resources and missing _PSC? Try to force D0. */ + /* + * No power resources and missing _PSC? Cross fingers and make + * it D0 in hope that this is what the BIOS put the device into. + * [We tried to force D0 here by executing _PS0, but that broke + * Toshiba P870-303 in a nasty way.] + */ state = ACPI_STATE_D0; - result = acpi_dev_pm_explicit_set(device, state); - if (result) - return result; } device->power.state = state; return 0; -- cgit v0.10.2 From 4616274d3382fa7698536d61b351e63cf0ce27f0 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 5 Jun 2013 19:36:11 +0100 Subject: ASoC: dapm: Treat DAI widgets like AIF widgets for power Even though they are virtual widgets DAI widgets still get counted for the DAPM context power management so we can't just use the active state to check if they should be powered as they may not be part of a complete path. Instead split them into input and output widgets and do the same power checks as we perform on AIFs. Reported-by: Stephen Warren Tested-by: Stephen Warren Signed-off-by: Mark Brown diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index d460902..385c632 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -450,7 +450,8 @@ enum snd_soc_dapm_type { snd_soc_dapm_aif_in, /* audio interface input */ snd_soc_dapm_aif_out, /* audio interface output */ snd_soc_dapm_siggen, /* signal generator */ - snd_soc_dapm_dai, /* link to DAI structure */ + snd_soc_dapm_dai_in, /* link to DAI structure */ + snd_soc_dapm_dai_out, snd_soc_dapm_dai_link, /* link between two DAI structures */ }; diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index a80c883..c7051c4 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -55,7 +55,8 @@ static int dapm_up_seq[] = { [snd_soc_dapm_clock_supply] = 1, [snd_soc_dapm_micbias] = 2, [snd_soc_dapm_dai_link] = 2, - [snd_soc_dapm_dai] = 3, + [snd_soc_dapm_dai_in] = 3, + [snd_soc_dapm_dai_out] = 3, [snd_soc_dapm_aif_in] = 3, [snd_soc_dapm_aif_out] = 3, [snd_soc_dapm_mic] = 4, @@ -92,7 +93,8 @@ static int dapm_down_seq[] = { [snd_soc_dapm_value_mux] = 9, [snd_soc_dapm_aif_in] = 10, [snd_soc_dapm_aif_out] = 10, - [snd_soc_dapm_dai] = 10, + [snd_soc_dapm_dai_in] = 10, + [snd_soc_dapm_dai_out] = 10, [snd_soc_dapm_dai_link] = 11, [snd_soc_dapm_clock_supply] = 12, [snd_soc_dapm_regulator_supply] = 12, @@ -419,7 +421,8 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w, case snd_soc_dapm_clock_supply: case snd_soc_dapm_aif_in: case snd_soc_dapm_aif_out: - case snd_soc_dapm_dai: + case snd_soc_dapm_dai_in: + case snd_soc_dapm_dai_out: case snd_soc_dapm_hp: case snd_soc_dapm_mic: case snd_soc_dapm_spk: @@ -820,7 +823,7 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget, switch (widget->id) { case snd_soc_dapm_adc: case snd_soc_dapm_aif_out: - case snd_soc_dapm_dai: + case snd_soc_dapm_dai_out: if (widget->active) { widget->outputs = snd_soc_dapm_suspend_check(widget); return widget->outputs; @@ -916,7 +919,7 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget, switch (widget->id) { case snd_soc_dapm_dac: case snd_soc_dapm_aif_in: - case snd_soc_dapm_dai: + case snd_soc_dapm_dai_in: if (widget->active) { widget->inputs = snd_soc_dapm_suspend_check(widget); return widget->inputs; @@ -1135,16 +1138,6 @@ static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) return out != 0 && in != 0; } -static int dapm_dai_check_power(struct snd_soc_dapm_widget *w) -{ - DAPM_UPDATE_STAT(w, power_checks); - - if (w->active) - return w->active; - - return dapm_generic_check_power(w); -} - /* Check to see if an ADC has power */ static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) { @@ -2318,7 +2311,8 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, case snd_soc_dapm_clock_supply: case snd_soc_dapm_aif_in: case snd_soc_dapm_aif_out: - case snd_soc_dapm_dai: + case snd_soc_dapm_dai_in: + case snd_soc_dapm_dai_out: case snd_soc_dapm_dai_link: list_add(&path->list, &dapm->card->paths); list_add(&path->list_sink, &wsink->sources); @@ -3129,10 +3123,12 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, break; case snd_soc_dapm_adc: case snd_soc_dapm_aif_out: + case snd_soc_dapm_dai_out: w->power_check = dapm_adc_check_power; break; case snd_soc_dapm_dac: case snd_soc_dapm_aif_in: + case snd_soc_dapm_dai_in: w->power_check = dapm_dac_check_power; break; case snd_soc_dapm_pga: @@ -3152,9 +3148,6 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, case snd_soc_dapm_clock_supply: w->power_check = dapm_supply_check_power; break; - case snd_soc_dapm_dai: - w->power_check = dapm_dai_check_power; - break; default: w->power_check = dapm_always_on_check_power; break; @@ -3375,7 +3368,7 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, template.reg = SND_SOC_NOPM; if (dai->driver->playback.stream_name) { - template.id = snd_soc_dapm_dai; + template.id = snd_soc_dapm_dai_in; template.name = dai->driver->playback.stream_name; template.sname = dai->driver->playback.stream_name; @@ -3393,7 +3386,7 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, } if (dai->driver->capture.stream_name) { - template.id = snd_soc_dapm_dai; + template.id = snd_soc_dapm_dai_out; template.name = dai->driver->capture.stream_name; template.sname = dai->driver->capture.stream_name; @@ -3423,8 +3416,13 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) /* For each DAI widget... */ list_for_each_entry(dai_w, &card->widgets, list) { - if (dai_w->id != snd_soc_dapm_dai) + switch (dai_w->id) { + case snd_soc_dapm_dai_in: + case snd_soc_dapm_dai_out: + break; + default: continue; + } dai = dai_w->priv; @@ -3433,8 +3431,13 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) if (w->dapm != dai_w->dapm) continue; - if (w->id == snd_soc_dapm_dai) + switch (w->id) { + case snd_soc_dapm_dai_in: + case snd_soc_dapm_dai_out: continue; + default: + break; + } if (!w->sname) continue; diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index a9fddf0..ccb6be4 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -928,8 +928,13 @@ static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, /* Create any new FE <--> BE connections */ for (i = 0; i < list->num_widgets; i++) { - if (list->widgets[i]->id != snd_soc_dapm_dai) + switch (list->widgets[i]->id) { + case snd_soc_dapm_dai_in: + case snd_soc_dapm_dai_out: + break; + default: continue; + } /* is there a valid BE rtd for this widget */ be = dpcm_get_be(card, list->widgets[i], stream); -- cgit v0.10.2 From 698b8223631472bf982ed570b0812faa61955683 Mon Sep 17 00:00:00 2001 From: Dave Chiluk Date: Tue, 28 May 2013 16:06:08 -0500 Subject: ncpfs: fix rmdir returns Device or resource busy 1d2ef5901483004d74947bbf78d5146c24038fe7 caused a regression in ncpfs such that directories could no longer be removed. This was because ncp_rmdir checked to see if a dentry could be unhashed before allowing it to be removed. Since 1d2ef5901483004d74947bbf78d5146c24038fe7 introduced a change that incremented dentry->d_count causing it to always be greater than 1 unhash would always fail. Thus causing the error path in ncp_rmdir to always be taken. Removing this error path is safe as unhashing is still accomplished by calls to dput from vfs_rmdir. Signed-off-by: Dave Chiluk Signed-off-by: Petr Vandrovec Signed-off-by: Al Viro diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index 8163260..6792ce1 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -1029,15 +1029,6 @@ static int ncp_rmdir(struct inode *dir, struct dentry *dentry) DPRINTK("ncp_rmdir: removing %s/%s\n", dentry->d_parent->d_name.name, dentry->d_name.name); - /* - * fail with EBUSY if there are still references to this - * directory. - */ - dentry_unhash(dentry); - error = -EBUSY; - if (!d_unhashed(dentry)) - goto out; - len = sizeof(__name); error = ncp_io2vol(server, __name, &len, dentry->d_name.name, dentry->d_name.len, !ncp_preserve_case(dir)); -- cgit v0.10.2 From 7b8dfe289fdde0066be343a3e0271ad6d7b6dbcf Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Fri, 7 Jun 2013 18:42:00 +0200 Subject: netfilter: nfnetlink_queue: fix missing HW protocol Locally generated IPv4 and IPv6 traffic gets skb->protocol unset, thus passing zero. ip6tables -I OUTPUT -j NFQUEUE libmnl/examples/netfilter# ./nf-queue 0 & ping6 ::1 packet received (id=1 hw=0x0000 hook=3) ^^^^^^ Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c index 4e27fa0..5352b2d 100644 --- a/net/netfilter/nfnetlink_queue_core.c +++ b/net/netfilter/nfnetlink_queue_core.c @@ -637,9 +637,6 @@ nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum) if (queue->copy_mode == NFQNL_COPY_NONE) return -EINVAL; - if ((queue->flags & NFQA_CFG_F_GSO) || !skb_is_gso(entry->skb)) - return __nfqnl_enqueue_packet(net, queue, entry); - skb = entry->skb; switch (entry->pf) { @@ -651,6 +648,9 @@ nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum) break; } + if ((queue->flags & NFQA_CFG_F_GSO) || !skb_is_gso(skb)) + return __nfqnl_enqueue_packet(net, queue, entry); + nf_bridge_adjust_skb_data(skb); segs = skb_gso_segment(skb, 0); /* Does not use PTR_ERR to limit the number of error codes that can be -- cgit v0.10.2 From 2894770ec17ff732f911c8495ae0504f06a5dad5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20Irest=C3=A5l?= Date: Wed, 5 Jun 2013 08:49:47 +0200 Subject: ASoC: tlv320aic3x: Remove deadlock from snd_soc_dapm_put_volsw_aic3x() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When calling snd_soc_dapm_sync(), it eventually tries to lock the same mutex already locked in snd_soc_dapm_put_volsw_aic3x() and a deadlock occurs. By moving the mutex unlock to just before snd_soc_dapm_sync(), this deadlock is prevented. This problem was introduced in Linux 3.5 Signed-off-by: Andreas Irestål Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index 65d09d6..1514bf8 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -187,14 +187,14 @@ static int snd_soc_dapm_put_volsw_aic3x(struct snd_kcontrol *kcontrol, break; } - - if (found) - snd_soc_dapm_sync(widget->dapm); } - ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); - mutex_unlock(&widget->codec->mutex); + + if (found) + snd_soc_dapm_sync(widget->dapm); + + ret = snd_soc_update_bits_locked(widget->codec, reg, val_mask, val); return ret; } -- cgit v0.10.2 From 591bfcfc334a003ba31c0deff03b22e73349939b Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 5 Jun 2013 14:09:30 -0700 Subject: hwmon: (adm1021) Strengthen chip detection for ADM1021, LM84 and MAX1617 On a system with both MAX1617 and JC42 sensors, JC42 sensors can be misdetected as LM84. Strengthen detection sufficiently enough to avoid this misdetection. Also improve detection for ADM1021. Modeled after chip detection code in sensors-detect command. Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck Tested-by: Jean Delvare Acked-by: Jean Delvare diff --git a/drivers/hwmon/adm1021.c b/drivers/hwmon/adm1021.c index 7e76922..f920619 100644 --- a/drivers/hwmon/adm1021.c +++ b/drivers/hwmon/adm1021.c @@ -331,26 +331,68 @@ static int adm1021_detect(struct i2c_client *client, man_id = i2c_smbus_read_byte_data(client, ADM1021_REG_MAN_ID); dev_id = i2c_smbus_read_byte_data(client, ADM1021_REG_DEV_ID); + if (man_id < 0 || dev_id < 0) + return -ENODEV; + if (man_id == 0x4d && dev_id == 0x01) type_name = "max1617a"; else if (man_id == 0x41) { if ((dev_id & 0xF0) == 0x30) type_name = "adm1023"; - else + else if ((dev_id & 0xF0) == 0x00) type_name = "adm1021"; + else + return -ENODEV; } else if (man_id == 0x49) type_name = "thmc10"; else if (man_id == 0x23) type_name = "gl523sm"; else if (man_id == 0x54) type_name = "mc1066"; - /* LM84 Mfr ID in a different place, and it has more unused bits */ - else if (conv_rate == 0x00 - && (config & 0x7F) == 0x00 - && (status & 0xAB) == 0x00) - type_name = "lm84"; - else - type_name = "max1617"; + else { + int lte, rte, lhi, rhi, llo, rlo; + + /* extra checks for LM84 and MAX1617 to avoid misdetections */ + + llo = i2c_smbus_read_byte_data(client, ADM1021_REG_THYST_R(0)); + rlo = i2c_smbus_read_byte_data(client, ADM1021_REG_THYST_R(1)); + + /* fail if any of the additional register reads failed */ + if (llo < 0 || rlo < 0) + return -ENODEV; + + lte = i2c_smbus_read_byte_data(client, ADM1021_REG_TEMP(0)); + rte = i2c_smbus_read_byte_data(client, ADM1021_REG_TEMP(1)); + lhi = i2c_smbus_read_byte_data(client, ADM1021_REG_TOS_R(0)); + rhi = i2c_smbus_read_byte_data(client, ADM1021_REG_TOS_R(1)); + + /* + * Fail for negative temperatures and negative high limits. + * This check also catches read errors on the tested registers. + */ + if ((s8)lte < 0 || (s8)rte < 0 || (s8)lhi < 0 || (s8)rhi < 0) + return -ENODEV; + + /* fail if all registers hold the same value */ + if (lte == rte && lte == lhi && lte == rhi && lte == llo + && lte == rlo) + return -ENODEV; + + /* + * LM84 Mfr ID is in a different place, + * and it has more unused bits. + */ + if (conv_rate == 0x00 + && (config & 0x7F) == 0x00 + && (status & 0xAB) == 0x00) { + type_name = "lm84"; + } else { + /* fail if low limits are larger than high limits */ + if ((s8)llo > lhi || (s8)rlo > rhi) + return -ENODEV; + type_name = "max1617"; + } + } pr_debug("Detected chip %s at adapter %d, address 0x%02x.\n", type_name, i2c_adapter_id(adapter), client->addr); -- cgit v0.10.2 From bcc567e3115055a9cc256183d72864f01286be22 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 23 May 2013 14:29:53 +0300 Subject: dmatest: do not allow to interrupt ongoing tests When user interrupts ongoing transfers the dmatest may end up with console lockup, oops, or data mismatch. This patch prevents user to abort any ongoing test. Documentation is updated accordingly. Signed-off-by: Andy Shevchenko Reported-by: Will Deacon Tested-by: Will Deacon Signed-off-by: Vinod Koul diff --git a/Documentation/dmatest.txt b/Documentation/dmatest.txt index 279ac0a..132a094 100644 --- a/Documentation/dmatest.txt +++ b/Documentation/dmatest.txt @@ -34,7 +34,7 @@ command: After a while you will start to get messages about current status or error like in the original code. -Note that running a new test will stop any in progress test. +Note that running a new test will not stop any in progress test. The following command should return actual state of the test. % cat /sys/kernel/debug/dmatest/run @@ -52,8 +52,8 @@ To wait for test done the user may perform a busy loop that checks the state. The module parameters that is supplied to the kernel command line will be used for the first performed test. After user gets a control, the test could be -interrupted or re-run with same or different parameters. For the details see -the above section "Part 2 - When dmatest is built as a module..." +re-run with the same or different parameters. For the details see the above +section "Part 2 - When dmatest is built as a module..." In both cases the module parameters are used as initial values for the test case. You always could check them at run-time by running diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index d8ce4ec..e88ded2 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -716,8 +716,7 @@ static int dmatest_func(void *data) } dma_async_issue_pending(chan); - wait_event_freezable_timeout(done_wait, - done.done || kthread_should_stop(), + wait_event_freezable_timeout(done_wait, done.done, msecs_to_jiffies(params->timeout)); status = dma_async_is_tx_complete(chan, cookie, NULL, NULL); @@ -997,7 +996,6 @@ static void stop_threaded_test(struct dmatest_info *info) static int __restart_threaded_test(struct dmatest_info *info, bool run) { struct dmatest_params *params = &info->params; - int ret; /* Stop any running test first */ __stop_threaded_test(info); @@ -1012,13 +1010,23 @@ static int __restart_threaded_test(struct dmatest_info *info, bool run) memcpy(params, &info->dbgfs_params, sizeof(*params)); /* Run test with new parameters */ - ret = __run_threaded_test(info); - if (ret) { - __stop_threaded_test(info); - pr_err("dmatest: Can't run test\n"); + return __run_threaded_test(info); +} + +static bool __is_threaded_test_run(struct dmatest_info *info) +{ + struct dmatest_chan *dtc; + + list_for_each_entry(dtc, &info->channels, node) { + struct dmatest_thread *thread; + + list_for_each_entry(thread, &dtc->threads, node) { + if (!thread->done) + return true; + } } - return ret; + return false; } static ssize_t dtf_write_string(void *to, size_t available, loff_t *ppos, @@ -1091,22 +1099,10 @@ static ssize_t dtf_read_run(struct file *file, char __user *user_buf, { struct dmatest_info *info = file->private_data; char buf[3]; - struct dmatest_chan *dtc; - bool alive = false; mutex_lock(&info->lock); - list_for_each_entry(dtc, &info->channels, node) { - struct dmatest_thread *thread; - - list_for_each_entry(thread, &dtc->threads, node) { - if (!thread->done) { - alive = true; - break; - } - } - } - if (alive) { + if (__is_threaded_test_run(info)) { buf[0] = 'Y'; } else { __stop_threaded_test(info); @@ -1132,7 +1128,12 @@ static ssize_t dtf_write_run(struct file *file, const char __user *user_buf, if (strtobool(buf, &bv) == 0) { mutex_lock(&info->lock); - ret = __restart_threaded_test(info, bv); + + if (__is_threaded_test_run(info)) + ret = -EBUSY; + else + ret = __restart_threaded_test(info, bv); + mutex_unlock(&info->lock); } -- cgit v0.10.2 From 40edeff6e1c6f9a6f16536ae3375e3af9d648449 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 2 Jun 2013 11:15:55 +0000 Subject: net_sched: qdisc_get_rtab() must check data[] array qdisc_get_rtab() should check not only the keys in struct tc_ratespec, but also the full data[] array. "tc ... linklayer atm " only perturbs values in the 256 slots array. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 2b935e7..281c1bd 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -291,17 +291,18 @@ struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r, struct nlattr *ta { struct qdisc_rate_table *rtab; + if (tab == NULL || r->rate == 0 || r->cell_log == 0 || + nla_len(tab) != TC_RTAB_SIZE) + return NULL; + for (rtab = qdisc_rtab_list; rtab; rtab = rtab->next) { - if (memcmp(&rtab->rate, r, sizeof(struct tc_ratespec)) == 0) { + if (!memcmp(&rtab->rate, r, sizeof(struct tc_ratespec)) && + !memcmp(&rtab->data, nla_data(tab), 1024)) { rtab->refcnt++; return rtab; } } - if (tab == NULL || r->rate == 0 || r->cell_log == 0 || - nla_len(tab) != TC_RTAB_SIZE) - return NULL; - rtab = kmalloc(sizeof(*rtab), GFP_KERNEL); if (rtab) { rtab->rate = *r; -- cgit v0.10.2 From 437d8ac510b90610da814ae25a7b79aaf3b4910f Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Tue, 4 Jun 2013 09:49:10 +0530 Subject: ARM: EXYNOS: uncompress - print debug messages if DEBUG_LL is defined Printing low-level debug messages make an assumption that the specified UART port has been preconfigured by the bootloader. Incorrectly specified UART port results in system getting stalled while printing the message "Uncompressing Linux... done, booting the kernel" This UART port number is specified through S3C_LOWLEVEL_UART_PORT. Since the UART port might different for different board, it is not possible to specify it correctly for every board that use a common defconfig file. Calling this print subroutine only when DEBUG_LL fixes the problem. By disabling DEBUG_LL in default config file, we would be able to boot multiple boards with different default UART ports. With this current approach, we miss the print "Uncompressing Linux... done, booting the kernel." when DEBUG_LL is not defined. Signed-off-by: Tushar Behera Signed-off-by: Olof Johansson diff --git a/arch/arm/plat-samsung/include/plat/uncompress.h b/arch/arm/plat-samsung/include/plat/uncompress.h index 438b248..02b66d7 100644 --- a/arch/arm/plat-samsung/include/plat/uncompress.h +++ b/arch/arm/plat-samsung/include/plat/uncompress.h @@ -66,6 +66,9 @@ uart_rd(unsigned int reg) static void putc(int ch) { + if (!config_enabled(CONFIG_DEBUG_LL)) + return; + if (uart_rd(S3C2410_UFCON) & S3C2410_UFCON_FIFOMODE) { int level; @@ -118,7 +121,12 @@ static void arch_decomp_error(const char *x) #ifdef CONFIG_S3C_BOOT_UART_FORCE_FIFO static inline void arch_enable_uart_fifo(void) { - u32 fifocon = uart_rd(S3C2410_UFCON); + u32 fifocon; + + if (!config_enabled(CONFIG_DEBUG_LL)) + return; + + fifocon = uart_rd(S3C2410_UFCON); if (!(fifocon & S3C2410_UFCON_FIFOMODE)) { fifocon |= S3C2410_UFCON_RESETBOTH; -- cgit v0.10.2 From 9c1fcdccc7ce5611ec1edf45dbbe51b10e333bd3 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Wed, 5 Jun 2013 13:56:33 -0700 Subject: ARM: exynos: add debug_ll_io_init() call in exynos_init_io() If the early MMU mapping of the UART happens to get booted out of the TLB between the start of paging_init() and when we finally re-add the UART at the very end of s3c_init_cpu(), we'll get a hang at bootup if we've got early_printk enabled. Avoid this hang by calling debug_ll_io_init() early. Without this patch, you can reliably reproduce a hang when early printk is enabled by adding flush_tlb_all() at the start of exynos_init_io(). After this patch the hang goes away. Signed-off-by: Doug Anderson Acked-by: Kukjin Kim Signed-off-by: Olof Johansson diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index 027c9e7..f7e504b 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -386,6 +386,8 @@ int __init exynos_fdt_map_chipid(unsigned long node, const char *uname, void __init exynos_init_io(struct map_desc *mach_desc, int size) { + debug_ll_io_init(); + #ifdef CONFIG_OF if (initial_boot_params) of_scan_flat_dt(exynos_fdt_map_chipid, NULL); -- cgit v0.10.2 From ea7f665612fcc73da6b7698f468cd5fc03a30d47 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 8 Jun 2013 02:55:07 +0200 Subject: Revert "ACPI / scan: do not match drivers against objects having scan handlers" Commit 9f29ab11ddbf ("ACPI / scan: do not match drivers against objects having scan handlers") introduced a boot regression on Tony's ia64 HP rx2600. Tony says: "It panics with the message: Kernel panic - not syncing: Unable to find SBA IOMMU: Try a generic or DIG kernel [...] my problem comes from arch/ia64/hp/common/sba_iommu.c where the code in sba_init() says: acpi_bus_register_driver(&acpi_sba_ioc_driver); if (!ioc_list) { but because of this change we never managed to call ioc_init() so ioc_list doesn't get set up, and we die." Revert it to avoid this breakage and we'll fix the problem it attempted to address later. Reported-by: Tony Luck Cc: 3.9+ Signed-off-by: Rafael J. Wysocki Signed-off-by: Linus Torvalds diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 90c5759e..44225cb 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -740,10 +740,6 @@ static int acpi_bus_match(struct device *dev, struct device_driver *drv) struct acpi_device *acpi_dev = to_acpi_device(dev); struct acpi_driver *acpi_drv = to_acpi_driver(drv); - /* Skip ACPI device objects with scan handlers attached. */ - if (acpi_dev->handler) - return 0; - return acpi_dev->flags.match_driver && !acpi_match_device_ids(acpi_dev, acpi_drv->ids); } -- cgit v0.10.2 From 7b5ff90ed081787ec0765ceb4fe5ccf5677493a6 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 6 Jun 2013 10:29:40 -0400 Subject: Btrfs: don't delete fs_roots until after we cleanup the transaction We get a use after free if we had a transaction to cleanup since there could be delayed inodes which refer to their respective fs_root. Thanks Reported-by: David Sterba Signed-off-by: Josef Bacik Signed-off-by: Chris Mason diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index e7b3cb5..bdaa092 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2859,8 +2859,8 @@ fail_qgroup: btrfs_free_qgroup_config(fs_info); fail_trans_kthread: kthread_stop(fs_info->transaction_kthread); - del_fs_roots(fs_info); btrfs_cleanup_transaction(fs_info->tree_root); + del_fs_roots(fs_info); fail_cleaner: kthread_stop(fs_info->cleaner_kthread); -- cgit v0.10.2 From 6379ef9fb2482a92b5fe09f927d6ce1f989c0c6d Mon Sep 17 00:00:00 2001 From: Naohiro Aota Date: Thu, 6 Jun 2013 09:56:34 +0000 Subject: btrfs: Drop inode if inode root is NULL There is a path where btrfs_drop_inode() is called with its inode's root is NULL: In btrfs_new_inode(), when btrfs_set_inode_index() fails, iput() is called. We should handle this case before taking look at the root->root_item. Signed-off-by: Naohiro Aota Reviewed-by: Miao Xie Signed-off-by: Josef Bacik Signed-off-by: Chris Mason diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 23c596c..c931a4d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8011,6 +8011,9 @@ int btrfs_drop_inode(struct inode *inode) { struct btrfs_root *root = BTRFS_I(inode)->root; + if (root == NULL) + return 1; + /* the snap/subvol tree is on deleting */ if (btrfs_root_refs(&root->root_item) == 0 && root != root->fs_info->tree_root) -- cgit v0.10.2 From a9995eece39a0630ebbfc1ab38570bce6c8a8f5b Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 31 May 2013 13:04:36 -0400 Subject: Btrfs: init relocate extent_io_tree with a mapping Dave reported a NULL pointer deref. This is caused because he thought he'd be smart and add sanity checks to the extent_io bit operations, but he didn't expect a tree to have a NULL mapping. To fix this we just need to init the relocation's processed_blocks with the btree_inode->i_mapping. Thanks, Reported-by: David Sterba Signed-off-by: Josef Bacik Signed-off-by: Chris Mason diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 395b820..4febca4 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -4082,7 +4082,7 @@ out: return inode; } -static struct reloc_control *alloc_reloc_control(void) +static struct reloc_control *alloc_reloc_control(struct btrfs_fs_info *fs_info) { struct reloc_control *rc; @@ -4093,7 +4093,8 @@ static struct reloc_control *alloc_reloc_control(void) INIT_LIST_HEAD(&rc->reloc_roots); backref_cache_init(&rc->backref_cache); mapping_tree_init(&rc->reloc_root_tree); - extent_io_tree_init(&rc->processed_blocks, NULL); + extent_io_tree_init(&rc->processed_blocks, + fs_info->btree_inode->i_mapping); return rc; } @@ -4110,7 +4111,7 @@ int btrfs_relocate_block_group(struct btrfs_root *extent_root, u64 group_start) int rw = 0; int err = 0; - rc = alloc_reloc_control(); + rc = alloc_reloc_control(fs_info); if (!rc) return -ENOMEM; @@ -4311,7 +4312,7 @@ int btrfs_recover_relocation(struct btrfs_root *root) if (list_empty(&reloc_roots)) goto out; - rc = alloc_reloc_control(); + rc = alloc_reloc_control(root->fs_info); if (!rc) { err = -ENOMEM; goto out; -- cgit v0.10.2 From 2932505abe7c56477315a3d93ffb3c27c5182e9d Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Sun, 26 May 2013 13:50:27 +0000 Subject: Btrfs: fix use-after-free bug during umount Commit be283b2e674a09457d4563729015adb637ce7cc1 ( Btrfs: use helper to cleanup tree roots) introduced the following bug, BUG: unable to handle kernel NULL pointer dereference at 0000000000000034 IP: [] extent_buffer_get+0x4/0xa [btrfs] [...] Pid: 2463, comm: btrfs-cache-1 Tainted: G O 3.9.0+ #4 innotek GmbH VirtualBox/VirtualBox RIP: 0010:[] [] extent_buffer_get+0x4/0xa [btrfs] Process btrfs-cache-1 (pid: 2463, threadinfo ffff880112d60000, task ffff880117679730) [...] Call Trace: [] btrfs_search_slot+0x104/0x64d [btrfs] [] btrfs_next_old_leaf+0xa7/0x334 [btrfs] [] btrfs_next_leaf+0x10/0x12 [btrfs] [] caching_thread+0x1a3/0x2e0 [btrfs] [] worker_loop+0x14b/0x48e [btrfs] [] ? btrfs_queue_worker+0x25c/0x25c [btrfs] [] kthread+0x8d/0x95 [] ? kthread_freezable_should_stop+0x43/0x43 [] ret_from_fork+0x7c/0xb0 [] ? kthread_freezable_should_stop+0x43/0x43 RIP [] extent_buffer_get+0x4/0xa [btrfs] We've free'ed commit_root before actually getting to free block groups where caching thread needs valid extent_root->commit_root. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik Signed-off-by: Chris Mason diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index bdaa092..7c66c23 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3512,10 +3512,10 @@ int close_ctree(struct btrfs_root *root) percpu_counter_sum(&fs_info->delalloc_bytes)); } - free_root_pointers(fs_info, 1); - btrfs_free_block_groups(fs_info); + free_root_pointers(fs_info, 1); + del_fs_roots(fs_info); iput(fs_info->btree_inode); -- cgit v0.10.2 From 13e6c37b989859e70b0d73d3f2cb0aa022159b17 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 30 May 2013 16:55:44 -0400 Subject: Btrfs: stop all workers before cleaning up roots Dave reported a panic because the extent_root->commit_root was NULL in the caching kthread. That is because we just unset it in free_root_pointers, which is not the correct thing to do, we have to either wait for the caching kthread to complete or hold the extent_commit_sem lock so we know the thread has exited. This patch makes the kthreads all stop first and then we do our cleanup. This should fix the race. Thanks, Reported-by: David Sterba Signed-off-by: Josef Bacik diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 7c66c23..b8b60b6 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3514,13 +3514,13 @@ int close_ctree(struct btrfs_root *root) btrfs_free_block_groups(fs_info); - free_root_pointers(fs_info, 1); + btrfs_stop_all_workers(fs_info); del_fs_roots(fs_info); - iput(fs_info->btree_inode); + free_root_pointers(fs_info, 1); - btrfs_stop_all_workers(fs_info); + iput(fs_info->btree_inode); #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY if (btrfs_test_opt(root, CHECK_INTEGRITY)) -- cgit v0.10.2 From 346dbb79ea0118ebb0df372b35cab9d5805216cd Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 25 Apr 2013 19:28:54 +0200 Subject: irqdomain: export irq_domain_add_simple All other irq_domain_add_* functions are exported already, and apparently this one got left out by mistake, which causes build errors for ARM allmodconfig kernels: ERROR: "irq_domain_add_simple" [drivers/gpio/gpio-rcar.ko] undefined! ERROR: "irq_domain_add_simple" [drivers/gpio/gpio-em.ko] undefined! Signed-off-by: Arnd Bergmann Acked-by: Simon Horman Signed-off-by: Grant Likely diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 5a83dde..d1adaed 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -191,6 +191,7 @@ struct irq_domain *irq_domain_add_simple(struct device_node *of_node, /* A linear domain is the default */ return irq_domain_add_linear(of_node, size, ops, host_data); } +EXPORT_SYMBOL_GPL(irq_domain_add_simple); /** * irq_domain_add_legacy() - Allocate and register a legacy revmap irq_domain. -- cgit v0.10.2 From 275e31b10ce20613aedceaa5160129c64b260a98 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Tue, 14 May 2013 19:02:45 +0800 Subject: kernel/irq/irqdomain.c: before use 'irq_data', need check it whether valid. Since irq_data may be NULL, if so, we WARN_ON(), and continue, 'hwirq' which related with 'irq_data' has to initialize later, or it will cause issue. Signed-off-by: Chen Gang Signed-off-by: Grant Likely diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index d1adaed..8c4c8ea 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -398,11 +398,12 @@ static void irq_domain_disassociate_many(struct irq_domain *domain, while (count--) { int irq = irq_base + count; struct irq_data *irq_data = irq_get_irq_data(irq); - irq_hw_number_t hwirq = irq_data->hwirq; + irq_hw_number_t hwirq; if (WARN_ON(!irq_data || irq_data->domain != domain)) continue; + hwirq = irq_data->hwirq; irq_set_status_flags(irq, IRQ_NOREQUEST); /* remove chip and handler */ -- cgit v0.10.2 From 94a63da0ac1a67bfb8b30aec1086523c5031ea5a Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 6 Jun 2013 12:10:23 +0100 Subject: irqdomain: document the simple domain first_irq The first_irq needs to be zero to get a linear domain and that comes with special semantics. We want to simplify this going forward but some documentation never hurts. Signed-off-by: Linus Walleij Signed-off-by: Grant Likely diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 8c4c8ea..54a4d52 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -143,7 +143,10 @@ static unsigned int irq_domain_legacy_revmap(struct irq_domain *domain, * irq_domain_add_simple() - Allocate and register a simple irq_domain. * @of_node: pointer to interrupt controller's device tree node. * @size: total number of irqs in mapping - * @first_irq: first number of irq block assigned to the domain + * @first_irq: first number of irq block assigned to the domain, + * pass zero to assign irqs on-the-fly. This will result in a + * linear IRQ domain so it is important to use irq_create_mapping() + * for each used IRQ, especially when SPARSE_IRQ is enabled. * @ops: map/unmap domain callbacks * @host_data: Controller private data pointer * -- cgit v0.10.2 From d94ea3f6d21e8b4398285516cc307c81d7374ec9 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 6 Jun 2013 14:11:38 +0100 Subject: irqchip: Return -EPERM for reserved IRQs The irqdomain core will report a log message for any attempted map call that fails unless the error code is -EPERM. This patch changes the Versatile irq controller drivers to use -EPERM because it is normal for a subset of the IRQ inputs to be marked as reserved on the various Versatile platforms. Signed-off-by: Grant Likely diff --git a/drivers/irqchip/irq-versatile-fpga.c b/drivers/irqchip/irq-versatile-fpga.c index 065b7a3..47a52ab 100644 --- a/drivers/irqchip/irq-versatile-fpga.c +++ b/drivers/irqchip/irq-versatile-fpga.c @@ -119,7 +119,7 @@ static int fpga_irqdomain_map(struct irq_domain *d, unsigned int irq, /* Skip invalid IRQs, only register handlers for the real ones */ if (!(f->valid & BIT(hwirq))) - return -ENOTSUPP; + return -EPERM; irq_set_chip_data(irq, f); irq_set_chip_and_handler(irq, &f->chip, handle_level_irq); diff --git a/drivers/irqchip/irq-vic.c b/drivers/irqchip/irq-vic.c index 884d11c..2bbb004 100644 --- a/drivers/irqchip/irq-vic.c +++ b/drivers/irqchip/irq-vic.c @@ -197,7 +197,7 @@ static int vic_irqdomain_map(struct irq_domain *d, unsigned int irq, /* Skip invalid IRQs, only register handlers for the real ones */ if (!(v->valid_sources & (1 << hwirq))) - return -ENOTSUPP; + return -EPERM; irq_set_chip_and_handler(irq, &vic_chip, handle_level_irq); irq_set_chip_data(irq, v->base); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); -- cgit v0.10.2 From 3cf138a6393d4ae2aeabce4c4b776d7d15cce69b Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 31 May 2013 08:40:35 -0300 Subject: [media] exynos4-is: Prevent NULL pointer dereference when firmware isn't loaded Ensure the firmware isn't accessed in the driver when the firmware loading routine has not completed. This fixes a potential kernel crash: [ 96.510000] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 96.520000] pgd = ee604000 [ 96.520000] [00000000] *pgd=6e947831, *pte=00000000, *ppte=00000000 [ 96.530000] Internal error: Oops: 17 [#1] PREEMPT SMP ARM [ 96.530000] Modules linked in: [ 96.530000] CPU: 2 PID: 2787 Comm: camera_test Not tainted 3.10.0-rc1-00269-gcdbde37-dirty #2158 [ 96.545000] task: ee42e400 ti: edfcc000 task.ti: edfcc000 [ 96.545000] PC is at fimc_is_start_firmware+0x14/0x94 [ 96.545000] LR is at fimc_isp_subdev_s_power+0x13c/0x1f8 ... [ 96.745000] [] (fimc_is_start_firmware+0x14/0x94) from [] (fimc_isp_subdev_s_power+0x13c/0x1f8) [ 96.745000] [] (fimc_isp_subdev_s_power+0x13c/0x1f8) from [] (__subdev_set_power+0x70/0x84) [ 96.745000] [] (__subdev_set_power+0x70/0x84) from [] (fimc_pipeline_s_power+0xc8/0x164) [ 96.745000] [] (fimc_pipeline_s_power+0xc8/0x164) from [] (__fimc_pipeline_open+0x90/0x268) [ 96.745000] [] (__fimc_pipeline_open+0x90/0x268) from [] (fimc_capture_open+0xe4/0x1ec) [ 96.745000] [] (fimc_capture_open+0xe4/0x1ec) from [] (v4l2_open+0xa8/0xe4) [ 96.745000] [] (v4l2_open+0xa8/0xe4) from [] (chrdev_open+0x9c/0x158) [ 96.745000] [] (chrdev_open+0x9c/0x158) from [] (do_dentry_open+0x1f4/0x27c) [ 96.745000] [] (do_dentry_open+0x1f4/0x27c) from [] (finish_open+0x34/0x50) [ 96.745000] [] (finish_open+0x34/0x50) from [] (do_last+0x59c/0xbcc) [ 96.745000] [] (do_last+0x59c/0xbcc) from [] (path_openat+0xb0/0x484) [ 96.745000] [] (path_openat+0xb0/0x484) from [] (do_filp_open+0x30/0x84) [ 96.745000] [] (do_filp_open+0x30/0x84) from [] (do_sys_open+0xe8/0x170) [ 96.745000] [] (do_sys_open+0xe8/0x170) from [] (ret_fast_syscall+0x0/0x30) Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c index 47c6363..1adf6df 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.c +++ b/drivers/media/platform/exynos4-is/fimc-is.c @@ -326,6 +326,11 @@ int fimc_is_start_firmware(struct fimc_is *is) struct device *dev = &is->pdev->dev; int ret; + if (is->fw.f_w == NULL) { + dev_err(dev, "firmware is not loaded\n"); + return -EINVAL; + } + memcpy(is->memory.vaddr, is->fw.f_w->data, is->fw.f_w->size); wmb(); @@ -941,7 +946,8 @@ static int fimc_is_remove(struct platform_device *pdev) vb2_dma_contig_cleanup_ctx(is->alloc_ctx); fimc_is_put_clocks(is); fimc_is_debugfs_remove(is); - release_firmware(is->fw.f_w); + if (is->fw.f_w) + release_firmware(is->fw.f_w); fimc_is_free_cpu_memory(is); return 0; -- cgit v0.10.2 From b4155d7d5b2c4e82238d629c451f7c27c9f37d9c Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 31 May 2013 08:40:36 -0300 Subject: [media] exynos4-is: Ensure fimc-is clocks are not enabled until properly configured Use clk_prepare_enable/clk_unprepare_disable instead of preparing the clocks during the driver initalization and then using just clk_disable/ clk_enable. The clock framework doesn't guarantee a clock will not get enabled during e.g. clk_set_parent if clk_prepare has been called on it. So we ensure clk_prepare() is called only when it is safe to enable the clocks, i.e. the parent clocks and the clocks' frequencies are set. It must be ensured the FIMC-IS clocks have proper frequencies before they are enabled, otherwise the whole system will hang. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyunmin Park Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c index 1adf6df..89f28fe 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.c +++ b/drivers/media/platform/exynos4-is/fimc-is.c @@ -71,7 +71,6 @@ static void fimc_is_put_clocks(struct fimc_is *is) for (i = 0; i < ISS_CLKS_MAX; i++) { if (IS_ERR(is->clocks[i])) continue; - clk_unprepare(is->clocks[i]); clk_put(is->clocks[i]); is->clocks[i] = ERR_PTR(-EINVAL); } @@ -90,12 +89,6 @@ static int fimc_is_get_clocks(struct fimc_is *is) ret = PTR_ERR(is->clocks[i]); goto err; } - ret = clk_prepare(is->clocks[i]); - if (ret < 0) { - clk_put(is->clocks[i]); - is->clocks[i] = ERR_PTR(-EINVAL); - goto err; - } } return 0; @@ -103,7 +96,7 @@ err: fimc_is_put_clocks(is); dev_err(&is->pdev->dev, "failed to get clock: %s\n", fimc_is_clocks[i]); - return -ENXIO; + return ret; } static int fimc_is_setup_clocks(struct fimc_is *is) @@ -144,7 +137,7 @@ int fimc_is_enable_clocks(struct fimc_is *is) for (i = 0; i < ISS_GATE_CLKS_MAX; i++) { if (IS_ERR(is->clocks[i])) continue; - ret = clk_enable(is->clocks[i]); + ret = clk_prepare_enable(is->clocks[i]); if (ret < 0) { dev_err(&is->pdev->dev, "clock %s enable failed\n", fimc_is_clocks[i]); @@ -163,7 +156,7 @@ void fimc_is_disable_clocks(struct fimc_is *is) for (i = 0; i < ISS_GATE_CLKS_MAX; i++) { if (!IS_ERR(is->clocks[i])) { - clk_disable(is->clocks[i]); + clk_disable_unprepare(is->clocks[i]); pr_debug("disabled clock: %s\n", fimc_is_clocks[i]); } } -- cgit v0.10.2 From ac2a4a86643aa74236508f0a8c0e34b0622b0b46 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 31 May 2013 08:40:37 -0300 Subject: [media] exynos4-is: Fix reported colorspace at FIMC-IS-ISP subdev The FIMC-IS-ISP handles only Bayer formats thus V4L2_COLORSPACE_SRGB should be used. This change applies to the code first added in v3.10. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c b/drivers/media/platform/exynos4-is/fimc-isp.c index d63947f..7ede30b 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp.c +++ b/drivers/media/platform/exynos4-is/fimc-isp.c @@ -138,7 +138,7 @@ static int fimc_isp_subdev_get_fmt(struct v4l2_subdev *sd, return 0; } - mf->colorspace = V4L2_COLORSPACE_JPEG; + mf->colorspace = V4L2_COLORSPACE_SRGB; mutex_lock(&isp->subdev_lock); __is_get_frame_size(is, &cur_fmt); @@ -194,7 +194,7 @@ static int fimc_isp_subdev_set_fmt(struct v4l2_subdev *sd, v4l2_dbg(1, debug, sd, "%s: pad%d: code: 0x%x, %dx%d\n", __func__, fmt->pad, mf->code, mf->width, mf->height); - mf->colorspace = V4L2_COLORSPACE_JPEG; + mf->colorspace = V4L2_COLORSPACE_SRGB; mutex_lock(&isp->subdev_lock); __isp_subdev_try_format(isp, fmt); -- cgit v0.10.2 From 6301b13213d55e51b7255b1098618ba99d2945cd Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 10 May 2013 12:46:35 -0300 Subject: [media] exynos4-is: Remove "sysreg" clock handling The "sysreg" clock is required by multiple subsystems and none of the other drivers handles this clock explicitly. It is currently assumed that this clock is always on, left in its default state after system reset. Remove handling of this clock from the FIMC-IS driver to avoid breaking other subsystems. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c index 89f28fe..520e439 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.c +++ b/drivers/media/platform/exynos4-is/fimc-is.c @@ -48,7 +48,6 @@ static char *fimc_is_clocks[ISS_CLKS_MAX] = { [ISS_CLK_LITE0] = "lite0", [ISS_CLK_LITE1] = "lite1", [ISS_CLK_MPLL] = "mpll", - [ISS_CLK_SYSREG] = "sysreg", [ISS_CLK_ISP] = "isp", [ISS_CLK_DRC] = "drc", [ISS_CLK_FD] = "fd", diff --git a/drivers/media/platform/exynos4-is/fimc-is.h b/drivers/media/platform/exynos4-is/fimc-is.h index f5275a5..606a7c9 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.h +++ b/drivers/media/platform/exynos4-is/fimc-is.h @@ -73,7 +73,6 @@ enum { ISS_CLK_LITE0, ISS_CLK_LITE1, ISS_CLK_MPLL, - ISS_CLK_SYSREG, ISS_CLK_ISP, ISS_CLK_DRC, ISS_CLK_FD, -- cgit v0.10.2 From dfd50fc9030a62521838eecbe488e1962edcba80 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 29 May 2013 05:03:32 -0300 Subject: [media] DocBook/media/v4l: update version number The version number was still 3.9: update to 3.10. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml index bfc93cd..bfe823d 100644 --- a/Documentation/DocBook/media/v4l/v4l2.xml +++ b/Documentation/DocBook/media/v4l/v4l2.xml @@ -493,7 +493,7 @@ and discussions on the V4L mailing list. Video for Linux Two API Specification - Revision 3.9 + Revision 3.10 &sub-common; -- cgit v0.10.2 From 609c4c12af79b1ba5fd2d31727a95dd3a319c0ae Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 29 May 2013 10:44:22 -0300 Subject: [media] cx88: fix NULL pointer dereference This fixes a NULL pointer deference when loading the cx88_dvb module for a Hauppauge HVR4000. The bugzilla bug report is here: https://bugzilla.kernel.org/show_bug.cgi?id=56271 The cause is that the wm8775 is optional, so even though the board info says there is one, it doesn't have to be there. Checking whether the module was actually loaded is much safer. Note that this driver is quite buggy when it comes to unloading and reloading modules. Unloading cx8800 and reloading it again will still cause a crash, most likely because either the i2c bus isn't unloaded at the right time and/or the v4l2_device_unregister isn't called at the right time. Signed-off-by: Hans Verkuil Reported-by: Sebastian Frei Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/pci/cx88/cx88-alsa.c b/drivers/media/pci/cx88/cx88-alsa.c index 27d6262..aba5b1c 100644 --- a/drivers/media/pci/cx88/cx88-alsa.c +++ b/drivers/media/pci/cx88/cx88-alsa.c @@ -615,7 +615,7 @@ static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol, int changed = 0; u32 old; - if (core->board.audio_chip == V4L2_IDENT_WM8775) + if (core->sd_wm8775) snd_cx88_wm8775_volume_put(kcontrol, value); left = value->value.integer.value[0] & 0x3f; @@ -682,8 +682,7 @@ static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol, vol ^= bit; cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol); /* Pass mute onto any WM8775 */ - if ((core->board.audio_chip == V4L2_IDENT_WM8775) && - ((1<<6) == bit)) + if (core->sd_wm8775 && ((1<<6) == bit)) wm8775_s_ctrl(core, V4L2_CID_AUDIO_MUTE, 0 != (vol & bit)); ret = 1; } @@ -903,7 +902,7 @@ static int cx88_audio_initdev(struct pci_dev *pci, goto error; /* If there's a wm8775 then add a Line-In ALC switch */ - if (core->board.audio_chip == V4L2_IDENT_WM8775) + if (core->sd_wm8775) snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip)); strcpy (card->driver, "CX88x"); diff --git a/drivers/media/pci/cx88/cx88-video.c b/drivers/media/pci/cx88/cx88-video.c index 1b00615..c7a9be1 100644 --- a/drivers/media/pci/cx88/cx88-video.c +++ b/drivers/media/pci/cx88/cx88-video.c @@ -385,8 +385,7 @@ int cx88_video_mux(struct cx88_core *core, unsigned int input) /* The wm8775 module has the "2" route hardwired into the initialization. Some boards may use different routes for different inputs. HVR-1300 surely does */ - if (core->board.audio_chip && - core->board.audio_chip == V4L2_IDENT_WM8775) { + if (core->sd_wm8775) { call_all(core, audio, s_routing, INPUT(input).audioroute, 0, 0); } @@ -771,8 +770,7 @@ static int video_open(struct file *file) cx_write(MO_GP1_IO, core->board.radio.gpio1); cx_write(MO_GP2_IO, core->board.radio.gpio2); if (core->board.radio.audioroute) { - if(core->board.audio_chip && - core->board.audio_chip == V4L2_IDENT_WM8775) { + if (core->sd_wm8775) { call_all(core, audio, s_routing, core->board.radio.audioroute, 0, 0); } @@ -959,7 +957,7 @@ static int cx8800_s_aud_ctrl(struct v4l2_ctrl *ctrl) u32 value,mask; /* Pass changes onto any WM8775 */ - if (core->board.audio_chip == V4L2_IDENT_WM8775) { + if (core->sd_wm8775) { switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: wm8775_s_ctrl(core, ctrl->id, ctrl->val); -- cgit v0.10.2 From 3963d4fb869de1144aebe6eef074995f086961c4 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 2 Jun 2013 07:55:59 -0300 Subject: [media] v4l2-ctrls: V4L2_CTRL_CLASS_FM_RX controls are also valid radio controls The radio filter function that filters controls that are valid for a radio device should also accept V4L2_CTRL_CLASS_FM_RX controls. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index ebb8e48..fccd08b 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -1835,6 +1835,8 @@ bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl) { if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_FM_TX) return true; + if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_FM_RX) + return true; switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: case V4L2_CID_AUDIO_VOLUME: -- cgit v0.10.2 From 560dde24adfdc9dbcd141c75faecc5e0402fe531 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 3 Jun 2013 04:35:22 -0300 Subject: [media] v4l2-ioctl: don't print the clips list The clips pointer is a userspace pointer, not a kernelspace pointer, so you can't dereference the clips pointer. Also add a few missing commas and newlines. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index f81bda1..7658586 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -243,7 +243,6 @@ static void v4l_print_format(const void *arg, bool write_only) const struct v4l2_vbi_format *vbi; const struct v4l2_sliced_vbi_format *sliced; const struct v4l2_window *win; - const struct v4l2_clip *clip; unsigned i; pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); @@ -253,7 +252,7 @@ static void v4l_print_format(const void *arg, bool write_only) pix = &p->fmt.pix; pr_cont(", width=%u, height=%u, " "pixelformat=%c%c%c%c, field=%s, " - "bytesperline=%u sizeimage=%u, colorspace=%d\n", + "bytesperline=%u, sizeimage=%u, colorspace=%d\n", pix->width, pix->height, (pix->pixelformat & 0xff), (pix->pixelformat >> 8) & 0xff, @@ -284,20 +283,14 @@ static void v4l_print_format(const void *arg, bool write_only) case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: win = &p->fmt.win; - pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, " - "chromakey=0x%08x, bitmap=%p, " - "global_alpha=0x%02x\n", - win->w.width, win->w.height, - win->w.left, win->w.top, + /* Note: we can't print the clip list here since the clips + * pointer is a userspace pointer, not a kernelspace + * pointer. */ + pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", + win->w.width, win->w.height, win->w.left, win->w.top, prt_names(win->field, v4l2_field_names), - win->chromakey, win->bitmap, win->global_alpha); - clip = win->clips; - for (i = 0; i < win->clipcount; i++) { - printk(KERN_DEBUG "clip %u: wxh=%dx%d, x,y=%d,%d\n", - i, clip->c.width, clip->c.height, - clip->c.left, clip->c.top); - clip = clip->next; - } + win->chromakey, win->clipcount, win->clips, + win->bitmap, win->global_alpha); break; case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: @@ -332,7 +325,7 @@ static void v4l_print_framebuffer(const void *arg, bool write_only) pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, " "height=%u, pixelformat=%c%c%c%c, " - "bytesperline=%u sizeimage=%u, colorspace=%d\n", + "bytesperline=%u, sizeimage=%u, colorspace=%d\n", p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, (p->fmt.pixelformat & 0xff), @@ -353,7 +346,7 @@ static void v4l_print_modulator(const void *arg, bool write_only) const struct v4l2_modulator *p = arg; if (write_only) - pr_cont("index=%u, txsubchans=0x%x", p->index, p->txsubchans); + pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); else pr_cont("index=%u, name=%.*s, capability=0x%x, " "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", @@ -445,13 +438,13 @@ static void v4l_print_buffer(const void *arg, bool write_only) for (i = 0; i < p->length; ++i) { plane = &p->m.planes[i]; printk(KERN_DEBUG - "plane %d: bytesused=%d, data_offset=0x%08x " + "plane %d: bytesused=%d, data_offset=0x%08x, " "offset/userptr=0x%lx, length=%d\n", i, plane->bytesused, plane->data_offset, plane->m.userptr, plane->length); } } else { - pr_cont("bytesused=%d, offset/userptr=0x%lx, length=%d\n", + pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", p->bytesused, p->m.userptr, p->length); } @@ -504,6 +497,8 @@ static void v4l_print_streamparm(const void *arg, bool write_only) c->capability, c->outputmode, c->timeperframe.numerator, c->timeperframe.denominator, c->extendedmode, c->writebuffers); + } else { + pr_cont("\n"); } } @@ -734,11 +729,11 @@ static void v4l_print_frmsizeenum(const void *arg, bool write_only) p->type); switch (p->type) { case V4L2_FRMSIZE_TYPE_DISCRETE: - pr_cont(" wxh=%ux%u\n", + pr_cont(", wxh=%ux%u\n", p->discrete.width, p->discrete.height); break; case V4L2_FRMSIZE_TYPE_STEPWISE: - pr_cont(" min=%ux%u, max=%ux%u, step=%ux%u\n", + pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", p->stepwise.min_width, p->stepwise.min_height, p->stepwise.step_width, p->stepwise.step_height, p->stepwise.max_width, p->stepwise.max_height); @@ -764,12 +759,12 @@ static void v4l_print_frmivalenum(const void *arg, bool write_only) p->width, p->height, p->type); switch (p->type) { case V4L2_FRMIVAL_TYPE_DISCRETE: - pr_cont(" fps=%d/%d\n", + pr_cont(", fps=%d/%d\n", p->discrete.numerator, p->discrete.denominator); break; case V4L2_FRMIVAL_TYPE_STEPWISE: - pr_cont(" min=%d/%d, max=%d/%d, step=%d/%d\n", + pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", p->stepwise.min.numerator, p->stepwise.min.denominator, p->stepwise.max.numerator, @@ -807,8 +802,8 @@ static void v4l_print_event(const void *arg, bool write_only) pr_cont("value64=%lld, ", c->value64); else pr_cont("value=%d, ", c->value); - pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d," - " default_value=%d\n", + pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, " + "default_value=%d\n", c->flags, c->minimum, c->maximum, c->step, c->default_value); break; @@ -845,7 +840,7 @@ static void v4l_print_freq_band(const void *arg, bool write_only) const struct v4l2_frequency_band *p = arg; pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, " - "rangelow=%u, rangehigh=%u, modulation=0x%x\n", + "rangelow=%u, rangehigh=%u, modulation=0x%x\n", p->tuner, p->type, p->index, p->capability, p->rangelow, p->rangehigh, p->modulation); -- cgit v0.10.2 From bbd465df73f0d8ba41b8a0732766a243d0f5b356 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Sun, 9 Jun 2013 01:25:57 +0200 Subject: hpfs: fix warnings when the filesystem fills up This patch fixes warnings due to missing lock on write error path. WARNING: at fs/hpfs/hpfs_fn.h:353 hpfs_truncate+0x75/0x80 [hpfs]() Hardware name: empty Pid: 26563, comm: dd Tainted: P O 3.9.4 #12 Call Trace: hpfs_truncate+0x75/0x80 [hpfs] hpfs_write_begin+0x84/0x90 [hpfs] _hpfs_bmap+0x10/0x10 [hpfs] generic_file_buffered_write+0x121/0x2c0 __generic_file_aio_write+0x1c7/0x3f0 generic_file_aio_write+0x7c/0x100 do_sync_write+0x98/0xd0 hpfs_file_write+0xd/0x50 [hpfs] vfs_write+0xa2/0x160 sys_write+0x51/0xa0 page_fault+0x22/0x30 system_call_fastpath+0x1a/0x1f Signed-off-by: Mikulas Patocka Cc: stable@kernel.org # 2.6.39+ Signed-off-by: Linus Torvalds diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c index 3027f4d..e4ba5fe 100644 --- a/fs/hpfs/file.c +++ b/fs/hpfs/file.c @@ -109,10 +109,14 @@ static void hpfs_write_failed(struct address_space *mapping, loff_t to) { struct inode *inode = mapping->host; + hpfs_lock(inode->i_sb); + if (to > inode->i_size) { truncate_pagecache(inode, to, inode->i_size); hpfs_truncate(inode); } + + hpfs_unlock(inode->i_sb); } static int hpfs_write_begin(struct file *file, struct address_space *mapping, -- cgit v0.10.2 From 317ddd256b9c24b0d78fa8018f80f1e495481a10 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 8 Jun 2013 17:41:04 -0700 Subject: Linux 3.10-rc5 diff --git a/Makefile b/Makefile index 49aa84b..9040016 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 10 SUBLEVEL = 0 -EXTRAVERSION = -rc4 +EXTRAVERSION = -rc5 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v0.10.2 From 9166e1aae3c90720fc389815909cb0bb815d9bca Mon Sep 17 00:00:00 2001 From: Katsuya Matsubara Date: Tue, 23 Apr 2013 07:51:35 -0300 Subject: [media] sh_veu: invoke v4l2_m2m_job_finish() even if a job has been aborted v4l2_m2m_job_finish() should be invoked even if the current ongoing job has been aborted since v4l2_m2m_ctx_release() which has issued the job abort may wait until the finish function is invoked. Signed-off-by: Katsuya Matsubara Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/sh_veu.c b/drivers/media/platform/sh_veu.c index 0b32cc3..6fecf9f 100644 --- a/drivers/media/platform/sh_veu.c +++ b/drivers/media/platform/sh_veu.c @@ -1138,10 +1138,7 @@ static irqreturn_t sh_veu_isr(int irq, void *dev_id) veu->xaction++; - if (!veu->aborting) - return IRQ_WAKE_THREAD; - - return IRQ_HANDLED; + return IRQ_WAKE_THREAD; } static int sh_veu_probe(struct platform_device *pdev) -- cgit v0.10.2 From 6abb3cf2c34554590791b7486e0e32b291feacc4 Mon Sep 17 00:00:00 2001 From: Katsuya Matsubara Date: Tue, 23 Apr 2013 07:51:36 -0300 Subject: [media] sh_veu: keep power supply until the m2m context is released In the sh_veu driver, only the interrupt handler 'sh_veu_bh' can invoke the v4l2_m2m_job_finish() function. So the hardware must be alive for handling interrupts until returning from v4l2_m2m_ctx_release(). Signed-off-by: Katsuya Matsubara Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/sh_veu.c b/drivers/media/platform/sh_veu.c index 6fecf9f..ebf90bf 100644 --- a/drivers/media/platform/sh_veu.c +++ b/drivers/media/platform/sh_veu.c @@ -1033,8 +1033,6 @@ static int sh_veu_release(struct file *file) dev_dbg(veu->dev, "Releasing instance %p\n", veu_file); - pm_runtime_put(veu->dev); - if (veu_file == veu->capture) { veu->capture = NULL; vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)); @@ -1050,6 +1048,8 @@ static int sh_veu_release(struct file *file) veu->m2m_ctx = NULL; } + pm_runtime_put(veu->dev); + kfree(veu_file); return 0; -- cgit v0.10.2 From 697a6d2387692c7f9c94f3bfb3dac474aa840f02 Mon Sep 17 00:00:00 2001 From: Katsuya Matsubara Date: Tue, 23 Apr 2013 07:51:37 -0300 Subject: [media] sh_veu: fix the buffer size calculation The 'bytesperline' value only indicates the stride of the Y plane if the color format is planar, such as NV12. When calculating the total plane size, the size of CbCr plane must also be considered. Signed-off-by: Katsuya Matsubara Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/sh_veu.c b/drivers/media/platform/sh_veu.c index ebf90bf..59a9dee 100644 --- a/drivers/media/platform/sh_veu.c +++ b/drivers/media/platform/sh_veu.c @@ -905,11 +905,11 @@ static int sh_veu_queue_setup(struct vb2_queue *vq, if (ftmp.fmt.pix.width != pix->width || ftmp.fmt.pix.height != pix->height) return -EINVAL; - size = pix->bytesperline ? pix->bytesperline * pix->height : - pix->width * pix->height * fmt->depth >> 3; + size = pix->bytesperline ? pix->bytesperline * pix->height * fmt->depth / fmt->ydepth : + pix->width * pix->height * fmt->depth / fmt->ydepth; } else { vfmt = sh_veu_get_vfmt(veu, vq->type); - size = vfmt->bytesperline * vfmt->frame.height; + size = vfmt->bytesperline * vfmt->frame.height * vfmt->fmt->depth / vfmt->fmt->ydepth; } if (count < 2) -- cgit v0.10.2 From af44ad5edd1eb6ca92ed5be48e0004e1f04bf219 Mon Sep 17 00:00:00 2001 From: Wenbing Wang Date: Wed, 5 Jun 2013 06:37:14 -0300 Subject: [media] soc_camera: error dev remove and v4l2 call in soc_camera_close(), if ici->ops->remove() removes device firstly, and then call __soc_camera_power_off(), it has logic error. Since if remove device, it should disable subdev clk. but in __soc_camera_ power_off(), it will callback v4l2 s_power function which will read/write subdev registers to control power by i2c. and then i2c read/write will fail because of clk disable. So suggest to re-sequence two functions call. Change-Id: Iee7a6d4fc7c7c1addb5d342621eb8dcd00fa2745 Signed-off-by: Wenbing Wang Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c index eea832c..3a4efbd 100644 --- a/drivers/media/platform/soc_camera/soc_camera.c +++ b/drivers/media/platform/soc_camera/soc_camera.c @@ -643,9 +643,9 @@ static int soc_camera_close(struct file *file) if (ici->ops->init_videobuf2) vb2_queue_release(&icd->vb2_vidq); - ici->ops->remove(icd); - __soc_camera_power_off(icd); + + ici->ops->remove(icd); } if (icd->streamer == file) -- cgit v0.10.2 From 820de86a90089ee607d7864538c98a23b503c846 Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Wed, 5 Jun 2013 14:24:01 +0200 Subject: drm/gma500/psb: Unpin framebuffer on crtc disable The framebuffer needs to be unpinned in the crtc->disable callback because of previous pinning in psb_intel_pipe_set_base(). This will fix a memory leak where the framebuffer was released but not unpinned properly. This patch only affects Poulsbo. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=889511 Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=812113 Cc: stable@vger.kernel.org Reviewed-by: Daniel Vetter Signed-off-by: Patrik Jakobsson diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c index 6e8f42b..12d129e 100644 --- a/drivers/gpu/drm/gma500/psb_intel_display.c +++ b/drivers/gpu/drm/gma500/psb_intel_display.c @@ -1150,6 +1150,19 @@ static void psb_intel_crtc_destroy(struct drm_crtc *crtc) kfree(psb_intel_crtc); } +static void psb_intel_crtc_disable(struct drm_crtc *crtc) +{ + struct gtt_range *gt; + struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; + + crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); + + if (crtc->fb) { + gt = to_psb_fb(crtc->fb)->gtt; + psb_gtt_unpin(gt); + } +} + const struct drm_crtc_helper_funcs psb_intel_helper_funcs = { .dpms = psb_intel_crtc_dpms, .mode_fixup = psb_intel_crtc_mode_fixup, @@ -1157,6 +1170,7 @@ const struct drm_crtc_helper_funcs psb_intel_helper_funcs = { .mode_set_base = psb_intel_pipe_set_base, .prepare = psb_intel_crtc_prepare, .commit = psb_intel_crtc_commit, + .disable = psb_intel_crtc_disable, }; const struct drm_crtc_funcs psb_intel_crtc_funcs = { -- cgit v0.10.2 From 22e7c385a80d771aaf3a15ae7ccea3b0686bbe10 Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Sat, 8 Jun 2013 20:23:08 +0200 Subject: drm/gma500/cdv: Unpin framebuffer on crtc disable The framebuffer needs to be unpinned in the crtc->disable callback because of previous pinning in psb_intel_pipe_set_base(). This will fix a memory leak where the framebuffer was released but not unpinned properly. This patch only affects Cedarview. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=889511 Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=812113 Cc: stable@vger.kernel.org Reviewed-by: Daniel Vetter Signed-off-by: Patrik Jakobsson diff --git a/drivers/gpu/drm/gma500/cdv_intel_display.c b/drivers/gpu/drm/gma500/cdv_intel_display.c index 3cfd093..d6742dc 100644 --- a/drivers/gpu/drm/gma500/cdv_intel_display.c +++ b/drivers/gpu/drm/gma500/cdv_intel_display.c @@ -1750,6 +1750,19 @@ static void cdv_intel_crtc_destroy(struct drm_crtc *crtc) kfree(psb_intel_crtc); } +static void cdv_intel_crtc_disable(struct drm_crtc *crtc) +{ + struct gtt_range *gt; + struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; + + crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); + + if (crtc->fb) { + gt = to_psb_fb(crtc->fb)->gtt; + psb_gtt_unpin(gt); + } +} + const struct drm_crtc_helper_funcs cdv_intel_helper_funcs = { .dpms = cdv_intel_crtc_dpms, .mode_fixup = cdv_intel_crtc_mode_fixup, @@ -1757,6 +1770,7 @@ const struct drm_crtc_helper_funcs cdv_intel_helper_funcs = { .mode_set_base = cdv_intel_pipe_set_base, .prepare = cdv_intel_crtc_prepare, .commit = cdv_intel_crtc_commit, + .disable = cdv_intel_crtc_disable, }; const struct drm_crtc_funcs cdv_intel_crtc_funcs = { -- cgit v0.10.2 From 3463cf1aad48ef43dd0b4cbd7fed15dcc8d2ca53 Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Sun, 26 May 2013 17:56:19 +0200 Subject: drm/gma500/psb: Fix cursor gem obj referencing on psb The internal crtc cursor gem object pointer was never set/updated since it was required to be set in the first place. Fixing this will make the pin/unpin count match and prevent cursor objects from leaking when userspace drops all references to it. Also make sure we drop the gem obj reference on failure. This patch only affects Poulsbo chips. Signed-off-by: Patrik Jakobsson diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c index 12d129e..6666493 100644 --- a/drivers/gpu/drm/gma500/psb_intel_display.c +++ b/drivers/gpu/drm/gma500/psb_intel_display.c @@ -843,7 +843,7 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc, struct gtt_range *cursor_gt = psb_intel_crtc->cursor_gt; struct drm_gem_object *obj; void *tmp_dst, *tmp_src; - int ret, i, cursor_pages; + int ret = 0, i, cursor_pages; /* if we want to turn of the cursor ignore width and height */ if (!handle) { @@ -880,7 +880,8 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc, if (obj->size < width * height * 4) { dev_dbg(dev->dev, "buffer is to small\n"); - return -ENOMEM; + ret = -ENOMEM; + goto unref_cursor; } gt = container_of(obj, struct gtt_range, gem); @@ -889,13 +890,14 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc, ret = psb_gtt_pin(gt); if (ret) { dev_err(dev->dev, "Can not pin down handle 0x%x\n", handle); - return ret; + goto unref_cursor; } if (dev_priv->ops->cursor_needs_phys) { if (cursor_gt == NULL) { dev_err(dev->dev, "No hardware cursor mem available"); - return -ENOMEM; + ret = -ENOMEM; + goto unref_cursor; } /* Prevent overflow */ @@ -936,9 +938,14 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc, struct gtt_range, gem); psb_gtt_unpin(gt); drm_gem_object_unreference(psb_intel_crtc->cursor_obj); - psb_intel_crtc->cursor_obj = obj; } - return 0; + + psb_intel_crtc->cursor_obj = obj; + return ret; + +unref_cursor: + drm_gem_object_unreference(obj); + return ret; } static int psb_intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) -- cgit v0.10.2 From 70b1304eeedf211fc9fa185b43350bd9ab4c119c Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Sun, 26 May 2013 18:44:48 +0200 Subject: drm/gma500/cdv: Fix cursor gem obj referencing on cdv The internal crtc cursor gem object pointer was never set/updated since it was required to be set in the first place. Fixing this will make the pin/unpin count match and prevent cursor objects from leaking when userspace drops all references to it. Also make sure we drop the gem obj reference on failure. This patch only affects Cedarview chips. Signed-off-by: Patrik Jakobsson diff --git a/drivers/gpu/drm/gma500/cdv_intel_display.c b/drivers/gpu/drm/gma500/cdv_intel_display.c index d6742dc..82430ad 100644 --- a/drivers/gpu/drm/gma500/cdv_intel_display.c +++ b/drivers/gpu/drm/gma500/cdv_intel_display.c @@ -1462,7 +1462,7 @@ static int cdv_intel_crtc_cursor_set(struct drm_crtc *crtc, size_t addr = 0; struct gtt_range *gt; struct drm_gem_object *obj; - int ret; + int ret = 0; /* if we want to turn of the cursor ignore width and height */ if (!handle) { @@ -1499,7 +1499,8 @@ static int cdv_intel_crtc_cursor_set(struct drm_crtc *crtc, if (obj->size < width * height * 4) { dev_dbg(dev->dev, "buffer is to small\n"); - return -ENOMEM; + ret = -ENOMEM; + goto unref_cursor; } gt = container_of(obj, struct gtt_range, gem); @@ -1508,7 +1509,7 @@ static int cdv_intel_crtc_cursor_set(struct drm_crtc *crtc, ret = psb_gtt_pin(gt); if (ret) { dev_err(dev->dev, "Can not pin down handle 0x%x\n", handle); - return ret; + goto unref_cursor; } addr = gt->offset; /* Or resource.start ??? */ @@ -1532,9 +1533,14 @@ static int cdv_intel_crtc_cursor_set(struct drm_crtc *crtc, struct gtt_range, gem); psb_gtt_unpin(gt); drm_gem_object_unreference(psb_intel_crtc->cursor_obj); - psb_intel_crtc->cursor_obj = obj; } - return 0; + + psb_intel_crtc->cursor_obj = obj; + return ret; + +unref_cursor: + drm_gem_object_unreference(obj); + return ret; } static int cdv_intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) -- cgit v0.10.2 From c5df457ffe6db7569de9fb856de490b5317c97b4 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Wed, 5 Jun 2013 02:26:51 +0000 Subject: powerpc/pci: Check the bus address instead of resource address in pcibios_fixup_resources If a BAR has the value of 0, we would assume that it is unset yet and then mark the resource as unset and would reassign it later. But after commit 6c5705fe (powerpc/PCI: get rid of device resource fixups) the pcibios_fixup_resources is invoked after the bus address was translated to linux resource. So the value of res->start is resource address. And since the resource and bus address may be different, we should translate it to the bus address before doing the check. Signed-off-by: Kevin Hao Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 7f2273c..eabeec9 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -827,6 +827,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev) } for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { struct resource *res = dev->resource + i; + struct pci_bus_region reg; if (!res->flags) continue; @@ -835,8 +836,9 @@ static void pcibios_fixup_resources(struct pci_dev *dev) * at 0 as unset as well, except if PCI_PROBE_ONLY is also set * since in that case, we don't want to re-assign anything */ + pcibios_resource_to_bus(dev, ®, res); if (pci_has_flag(PCI_REASSIGN_ALL_RSRC) || - (res->start == 0 && !pci_has_flag(PCI_PROBE_ONLY))) { + (reg.start == 0 && !pci_has_flag(PCI_PROBE_ONLY))) { /* Only print message if not re-assigning */ if (!pci_has_flag(PCI_REASSIGN_ALL_RSRC)) pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] " -- cgit v0.10.2 From b8b3de224f194005ad87ede6fd022fcc2bef3b1a Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 5 Jun 2013 14:25:50 +0000 Subject: powerpc/eeh: Don't check RTAS token to get PE addr RTAS token "ibm,get-config-addr-info" or ibm,get-config-addr-info2" are used to retrieve the PE address according to PCI address, which made up of domain/bus/slot/function. If we don't have those 2 tokens, the domain/bus/slot/function would be used as the address for EEH RTAS operations. Some older f/w might not have those 2 tokens and that blocks the EEH functionality to be initialized. It was introduced by commit e2af155c ("powerpc/eeh: pseries platform EEH initialization"). The patch skips the check on those 2 tokens so we can bring up EEH functionality successfully. And domain/bus/slot/function will be used as address for EEH RTAS operations. Cc: # v3.4+ Reported-by: Robert Knight Signed-off-by: Gavin Shan Tested-by: Robert Knight Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 19506f9..b456b15 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -83,7 +83,11 @@ static int pseries_eeh_init(void) ibm_configure_pe = rtas_token("ibm,configure-pe"); ibm_configure_bridge = rtas_token("ibm,configure-bridge"); - /* necessary sanity check */ + /* + * Necessary sanity check. We needn't check "get-config-addr-info" + * and its variant since the old firmware probably support address + * of domain/bus/slot/function for EEH RTAS operations. + */ if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE) { pr_warning("%s: RTAS service invalid\n", __func__); @@ -102,12 +106,6 @@ static int pseries_eeh_init(void) pr_warning("%s: RTAS service invalid\n", __func__); return -EINVAL; - } else if (ibm_get_config_addr_info2 == RTAS_UNKNOWN_SERVICE && - ibm_get_config_addr_info == RTAS_UNKNOWN_SERVICE) { - pr_warning("%s: RTAS service and " - " invalid\n", - __func__); - return -EINVAL; } else if (ibm_configure_pe == RTAS_UNKNOWN_SERVICE && ibm_configure_bridge == RTAS_UNKNOWN_SERVICE) { pr_warning("%s: RTAS service and " -- cgit v0.10.2 From 6a60f9e7d8bb3e81fa8bd6752f1473e216424ec4 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Tue, 4 Jun 2013 19:38:54 +0000 Subject: powerpc/power8: Fix oprofile and perf In 2ac6f42 powerpc/cputable: Fix oprofile_cpu_type on power8 we broke all power8 hw events. This reverts this change and uses oprofile_type instead. Perf now works on POWER8 again and oprofile will revert to using timers on POWER8. Kudos to mpe this fix. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 1f0937d..2a45d0f 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -452,8 +452,8 @@ static struct cpu_spec __initdata cpu_specs[] = { .mmu_features = MMU_FTRS_POWER8, .icache_bsize = 128, .dcache_bsize = 128, - .oprofile_type = PPC_OPROFILE_POWER4, - .oprofile_cpu_type = 0, + .oprofile_type = PPC_OPROFILE_INVALID, + .oprofile_cpu_type = "ppc64/ibm-compat-v1", .cpu_setup = __setup_cpu_power8, .cpu_restore = __restore_cpu_power8, .platform = "power8", @@ -506,8 +506,8 @@ static struct cpu_spec __initdata cpu_specs[] = { .dcache_bsize = 128, .num_pmcs = 6, .pmc_type = PPC_PMC_IBM, - .oprofile_cpu_type = 0, - .oprofile_type = PPC_OPROFILE_POWER4, + .oprofile_cpu_type = "ppc64/power8", + .oprofile_type = PPC_OPROFILE_INVALID, .cpu_setup = __setup_cpu_power8, .cpu_restore = __restore_cpu_power8, .platform = "power8", -- cgit v0.10.2 From d7c67fb1cf00b84829ae06fca04ad39408f156ba Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 29 May 2013 21:33:18 +0000 Subject: powerpc/pseries: Simplify denormalization handler The following simplifies the denorm code by using macros to generate the long stream of almost identical instructions. This patch results in no changes to the output binary, but removes a lot of lines of code. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index e6eba1b..3c9296b 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -454,38 +454,14 @@ BEGIN_FTR_SECTION xori r10,r10,(MSR_FE0|MSR_FE1) mtmsrd r10 sync - fmr 0,0 - fmr 1,1 - fmr 2,2 - fmr 3,3 - fmr 4,4 - fmr 5,5 - fmr 6,6 - fmr 7,7 - fmr 8,8 - fmr 9,9 - fmr 10,10 - fmr 11,11 - fmr 12,12 - fmr 13,13 - fmr 14,14 - fmr 15,15 - fmr 16,16 - fmr 17,17 - fmr 18,18 - fmr 19,19 - fmr 20,20 - fmr 21,21 - fmr 22,22 - fmr 23,23 - fmr 24,24 - fmr 25,25 - fmr 26,26 - fmr 27,27 - fmr 28,28 - fmr 29,29 - fmr 30,30 - fmr 31,31 + +#define FMR2(n) fmr (n), (n) ; fmr n+1, n+1 +#define FMR4(n) FMR2(n) ; FMR2(n+2) +#define FMR8(n) FMR4(n) ; FMR4(n+4) +#define FMR16(n) FMR8(n) ; FMR8(n+8) +#define FMR32(n) FMR16(n) ; FMR16(n+16) + FMR32(0) + FTR_SECTION_ELSE /* * To denormalise we need to move a copy of the register to itself. @@ -495,38 +471,14 @@ FTR_SECTION_ELSE oris r10,r10,MSR_VSX@h mtmsrd r10 sync - XVCPSGNDP(0,0,0) - XVCPSGNDP(1,1,1) - XVCPSGNDP(2,2,2) - XVCPSGNDP(3,3,3) - XVCPSGNDP(4,4,4) - XVCPSGNDP(5,5,5) - XVCPSGNDP(6,6,6) - XVCPSGNDP(7,7,7) - XVCPSGNDP(8,8,8) - XVCPSGNDP(9,9,9) - XVCPSGNDP(10,10,10) - XVCPSGNDP(11,11,11) - XVCPSGNDP(12,12,12) - XVCPSGNDP(13,13,13) - XVCPSGNDP(14,14,14) - XVCPSGNDP(15,15,15) - XVCPSGNDP(16,16,16) - XVCPSGNDP(17,17,17) - XVCPSGNDP(18,18,18) - XVCPSGNDP(19,19,19) - XVCPSGNDP(20,20,20) - XVCPSGNDP(21,21,21) - XVCPSGNDP(22,22,22) - XVCPSGNDP(23,23,23) - XVCPSGNDP(24,24,24) - XVCPSGNDP(25,25,25) - XVCPSGNDP(26,26,26) - XVCPSGNDP(27,27,27) - XVCPSGNDP(28,28,28) - XVCPSGNDP(29,29,29) - XVCPSGNDP(30,30,30) - XVCPSGNDP(31,31,31) + +#define XVCPSGNDP2(n) XVCPSGNDP(n,n,n) ; XVCPSGNDP(n+1,n+1,n+1) +#define XVCPSGNDP4(n) XVCPSGNDP2(n) ; XVCPSGNDP2(n+2) +#define XVCPSGNDP8(n) XVCPSGNDP4(n) ; XVCPSGNDP4(n+4) +#define XVCPSGNDP16(n) XVCPSGNDP8(n) ; XVCPSGNDP8(n+8) +#define XVCPSGNDP32(n) XVCPSGNDP16(n) ; XVCPSGNDP16(n+16) + XVCPSGNDP32(0) + ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_206) mtspr SPRN_HSRR0,r11 mtcrf 0x80,r9 -- cgit v0.10.2 From fb0fce3e554e5513aaa1c1c52b2ece11feea3c7d Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 29 May 2013 21:33:19 +0000 Subject: powerpc/power8: Update denormalization handler POWER8 can take a denormalisation exception on any VSX registers. This does the extra 32 VSX registers we don't currently handle. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 3c9296b..e783453 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -480,6 +480,16 @@ FTR_SECTION_ELSE XVCPSGNDP32(0) ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_206) + +BEGIN_FTR_SECTION + b denorm_done +END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) +/* + * To denormalise we need to move a copy of the register to itself. + * For POWER8 we need to do that for all 64 VSX registers + */ + XVCPSGNDP32(32) +denorm_done: mtspr SPRN_HSRR0,r11 mtcrf 0x80,r9 ld r9,PACA_EXGEN+EX_R9(r13) -- cgit v0.10.2 From 82a9f16adc12f51c3f8ea59a7c3c120241aff836 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Thu, 16 May 2013 20:27:31 +0000 Subject: powerpc/hw_breakpoints: Add DABRX cpu feature to fix 32-bit regression When introducing support for DABRX in 4474ef0, we broke older 32-bit CPUs that don't have that register. Some CPUs have a DABR but not DABRX. Configuration are: - No 32bit CPUs have DABRX but some have DABR. - POWER4+ and below have the DABR but no DABRX. - 970 and POWER5 and above have DABR and DABRX. - POWER8 has DAWR, hence no DABRX. This introduces CPU_FTR_DABRX and sets it on appropriate CPUs. We use the top 64 bits for CPU FTR bits since only 64 bit CPUs have this. Processors that don't have the DABRX will still work as they will fall back to software filtering these breakpoints via perf_exclude_event(). Signed-off-by: Michael Neuling Reported-by: "Gorelik, Jacob (335F)" cc: stable@vger.kernel.org (v3.9 only) Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 26807e5..6f3887d 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -176,6 +176,7 @@ extern const char *powerpc_base_platform; #define CPU_FTR_CFAR LONG_ASM_CONST(0x0100000000000000) #define CPU_FTR_HAS_PPR LONG_ASM_CONST(0x0200000000000000) #define CPU_FTR_DAWR LONG_ASM_CONST(0x0400000000000000) +#define CPU_FTR_DABRX LONG_ASM_CONST(0x0800000000000000) #ifndef __ASSEMBLY__ @@ -394,19 +395,20 @@ extern const char *powerpc_base_platform; CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_201 | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_CAN_NAP | CPU_FTR_MMCRA | \ CPU_FTR_CP_USE_DCBTZ | CPU_FTR_STCX_CHECKS_ADDRESS | \ - CPU_FTR_HVMODE) + CPU_FTR_HVMODE | CPU_FTR_DABRX) #define CPU_FTRS_POWER5 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_COHERENT_ICACHE | CPU_FTR_PURR | \ - CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB) + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_DABRX) #define CPU_FTRS_POWER6 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_COHERENT_ICACHE | \ CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ CPU_FTR_DSCR | CPU_FTR_UNALIGNED_LD_STD | \ - CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_CFAR) + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_CFAR | \ + CPU_FTR_DABRX) #define CPU_FTRS_POWER7 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -415,7 +417,7 @@ extern const char *powerpc_base_platform; CPU_FTR_DSCR | CPU_FTR_SAO | CPU_FTR_ASYM_SMT | \ CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | \ - CPU_FTR_VMX_COPY | CPU_FTR_HAS_PPR) + CPU_FTR_VMX_COPY | CPU_FTR_HAS_PPR | CPU_FTR_DABRX) #define CPU_FTRS_POWER8 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -430,14 +432,15 @@ extern const char *powerpc_base_platform; CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_PAUSE_ZERO | CPU_FTR_CELL_TB_BUG | CPU_FTR_CP_USE_DCBTZ | \ - CPU_FTR_UNALIGNED_LD_STD) + CPU_FTR_UNALIGNED_LD_STD | CPU_FTR_DABRX) #define CPU_FTRS_PA6T (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP | \ - CPU_FTR_PURR | CPU_FTR_REAL_LE) + CPU_FTR_PURR | CPU_FTR_REAL_LE | CPU_FTR_DABRX) #define CPU_FTRS_COMPATIBLE (CPU_FTR_USE_TB | CPU_FTR_PPCAS_ARCH_V2) #define CPU_FTRS_A2 (CPU_FTR_USE_TB | CPU_FTR_SMT | CPU_FTR_DBELL | \ - CPU_FTR_NOEXECUTE | CPU_FTR_NODSISRALIGN | CPU_FTR_ICSWX) + CPU_FTR_NOEXECUTE | CPU_FTR_NODSISRALIGN | \ + CPU_FTR_ICSWX | CPU_FTR_DABRX ) #ifdef __powerpc64__ #ifdef CONFIG_PPC_BOOK3E diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index a902723..b0f3e3f 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -399,7 +399,8 @@ static inline int __set_dabr(unsigned long dabr, unsigned long dabrx) static inline int __set_dabr(unsigned long dabr, unsigned long dabrx) { mtspr(SPRN_DABR, dabr); - mtspr(SPRN_DABRX, dabrx); + if (cpu_has_feature(CPU_FTR_DABRX)) + mtspr(SPRN_DABRX, dabrx); return 0; } #else -- cgit v0.10.2 From 6772faa1ba22eba18d087c2459030a683b65be57 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 5 Jun 2013 17:58:20 +0000 Subject: powerpc/perf: Fix deadlock caused by calling printk() in PMU exception In commit bc09c21 "Fix finding overflowed PMC in interrupt" we added a printk() to the PMU exception handler. Unfortunately that is not safe. The problem is that the PMU exception may run even when interrupts are soft disabled, aka NMI context. We do this so that we can profile parts of the kernel that have interrupts soft-disabled. But by calling printk() from the exception handler, we can potentially deadlock in the printk code on logbuf_lock, eg: [c00000038ba575c0] c000000000081928 .vprintk_emit+0xa8/0x540 [c00000038ba576a0] c0000000007bcde8 .printk+0x48/0x58 [c00000038ba57710] c000000000076504 .perf_event_interrupt+0x2d4/0x490 [c00000038ba57810] c00000000001f6f8 .performance_monitor_exception+0x48/0x60 [c00000038ba57880] c0000000000032cc performance_monitor_common+0x14c/0x180 --- Exception: f01 (Performance Monitor) at c0000000007b25d4 ._raw_spin_lock_irq +0x64/0xc0 [c00000038ba57bf0] c00000000007ed90 .devkmsg_read+0xd0/0x5a0 [c00000038ba57d00] c0000000001c2934 .vfs_read+0xc4/0x1e0 [c00000038ba57d90] c0000000001c2cd8 .SyS_read+0x58/0xd0 [c00000038ba57e30] c000000000009d54 syscall_exit+0x0/0x98 --- Exception: c01 (System Call) at 00001fffffbf6f7c SP (3ffff6d4de10) is in userspace Fix it by making sure we only call printk() when we are not in NMI context. Signed-off-by: Michael Ellerman Cc: # 3.9 Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 845c867..29c6482 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -1758,7 +1758,7 @@ static void perf_event_interrupt(struct pt_regs *regs) } } } - if ((!found) && printk_ratelimit()) + if (!found && !nmi && printk_ratelimit()) printk(KERN_WARNING "Can't find PMC that caused IRQ\n"); /* -- cgit v0.10.2 From b11ae95100f7061b39a15e5c1ecbf862464ac4b4 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 5 Jun 2013 18:03:36 +0000 Subject: powerpc: Partial revert of "Context switch more PMU related SPRs" In commit 59affcd I added context switching of more PMU SPRs, because they are potentially exposed to userspace on Power8. However despite me being a smart arse in the commit message it's actually not correct. In particular it interacts badly with a global perf record. We will have to do something more complicated, but that will have to wait for 3.11. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 246b11c..8741c85 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -465,20 +465,6 @@ BEGIN_FTR_SECTION std r0, THREAD_EBBHR(r3) mfspr r0, SPRN_EBBRR std r0, THREAD_EBBRR(r3) - - /* PMU registers made user read/(write) by EBB */ - mfspr r0, SPRN_SIAR - std r0, THREAD_SIAR(r3) - mfspr r0, SPRN_SDAR - std r0, THREAD_SDAR(r3) - mfspr r0, SPRN_SIER - std r0, THREAD_SIER(r3) - mfspr r0, SPRN_MMCR0 - std r0, THREAD_MMCR0(r3) - mfspr r0, SPRN_MMCR2 - std r0, THREAD_MMCR2(r3) - mfspr r0, SPRN_MMCRA - std r0, THREAD_MMCRA(r3) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) #endif @@ -581,20 +567,6 @@ BEGIN_FTR_SECTION ld r0, THREAD_EBBRR(r4) mtspr SPRN_EBBRR, r0 - /* PMU registers made user read/(write) by EBB */ - ld r0, THREAD_SIAR(r4) - mtspr SPRN_SIAR, r0 - ld r0, THREAD_SDAR(r4) - mtspr SPRN_SDAR, r0 - ld r0, THREAD_SIER(r4) - mtspr SPRN_SIER, r0 - ld r0, THREAD_MMCR0(r4) - mtspr SPRN_MMCR0, r0 - ld r0, THREAD_MMCR2(r4) - mtspr SPRN_MMCR2, r0 - ld r0, THREAD_MMCRA(r4) - mtspr SPRN_MMCRA, r0 - ld r0,THREAD_TAR(r4) mtspr SPRN_TAR,r0 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) -- cgit v0.10.2 From ac16d1484efd5d2d9077c55453b1f8abff49fc18 Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Tue, 28 May 2013 17:32:32 +0200 Subject: batman-adv: wait for rtnl in batadv_store_mesh_iface instead of failing if it is taken The rtnl_lock in batadv_store_mesh_iface has been converted to a rtnl_trylock some time ago to avoid a possible deadlock between rtnl and s_active on removal of the sysfs nodes. The behaviour introduced by that was quite confusing as it could lead to the sysfs store to fail, making batman-adv setup scripts unreliable. As recently the sysfs removal was postponed to a worker not running with the rtnl taken, the deadlock can't occur any more and it is safe to change the trylock back to a lock to make the sysfs store reliable again. Signed-off-by: Matthias Schiffer Reviewed-by: Simon Wunderlich Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index 15a22ef..929e304 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -582,10 +582,7 @@ static ssize_t batadv_store_mesh_iface(struct kobject *kobj, (strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0)) goto out; - if (!rtnl_trylock()) { - ret = -ERESTARTSYS; - goto out; - } + rtnl_lock(); if (status_tmp == BATADV_IF_NOT_IN_USE) { batadv_hardif_disable_interface(hard_iface, -- cgit v0.10.2 From 7c24bbbeab4159f924b65b1e94878e597b762714 Mon Sep 17 00:00:00 2001 From: Simon Wunderlich Date: Thu, 23 May 2013 13:07:42 +0200 Subject: batman-adv: forward late OGMs from best next hop When a packet is received from another node first and later from the best next hop, this packet is dropped. However the first OGM was sent with the BATADV_NOT_BEST_NEXT_HOP flag and thus dropped by neighbors. The late OGM from the best neighbor is then dropped because it is a duplicate. If this situation happens constantly, a node might end up not forwarding the "valid" OGMs anymore, and nodes behind will starve from not getting valid OGMs. Fix this by refining the duplicate checking behaviour: The actions should depend on whether it was a duplicate for a neighbor only or for the originator. OGMs which are not duplicates for a specific neighbor will now be considered in batadv_iv_ogm_forward(), but only actually forwarded for the best next hop. Therefore, late OGMs from the best next hop are forwarded now and not dropped as duplicates anymore. Signed-off-by: Simon Wunderlich Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 071f288..f680ee1 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -29,6 +29,21 @@ #include "bat_algo.h" #include "network-coding.h" +/** + * batadv_dup_status - duplicate status + * @BATADV_NO_DUP: the packet is a duplicate + * @BATADV_ORIG_DUP: OGM is a duplicate in the originator (but not for the + * neighbor) + * @BATADV_NEIGH_DUP: OGM is a duplicate for the neighbor + * @BATADV_PROTECTED: originator is currently protected (after reboot) + */ +enum batadv_dup_status { + BATADV_NO_DUP = 0, + BATADV_ORIG_DUP, + BATADV_NEIGH_DUP, + BATADV_PROTECTED, +}; + static struct batadv_neigh_node * batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface, const uint8_t *neigh_addr, @@ -650,7 +665,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, const struct batadv_ogm_packet *batadv_ogm_packet, struct batadv_hard_iface *if_incoming, const unsigned char *tt_buff, - int is_duplicate) + enum batadv_dup_status dup_status) { struct batadv_neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; struct batadv_neigh_node *router = NULL; @@ -676,7 +691,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, continue; } - if (is_duplicate) + if (dup_status != BATADV_NO_DUP) continue; spin_lock_bh(&tmp_neigh_node->lq_update_lock); @@ -718,7 +733,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, neigh_node->tq_avg = batadv_ring_buffer_avg(neigh_node->tq_recv); spin_unlock_bh(&neigh_node->lq_update_lock); - if (!is_duplicate) { + if (dup_status == BATADV_NO_DUP) { orig_node->last_ttl = batadv_ogm_packet->header.ttl; neigh_node->last_ttl = batadv_ogm_packet->header.ttl; } @@ -902,15 +917,16 @@ out: return ret; } -/* processes a batman packet for all interfaces, adjusts the sequence number and - * finds out whether it is a duplicate. - * returns: - * 1 the packet is a duplicate - * 0 the packet has not yet been received - * -1 the packet is old and has been received while the seqno window - * was protected. Caller should drop it. +/** + * batadv_iv_ogm_update_seqnos - process a batman packet for all interfaces, + * adjust the sequence number and find out whether it is a duplicate + * @ethhdr: ethernet header of the packet + * @batadv_ogm_packet: OGM packet to be considered + * @if_incoming: interface on which the OGM packet was received + * + * Returns duplicate status as enum batadv_dup_status */ -static int +static enum batadv_dup_status batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, const struct batadv_ogm_packet *batadv_ogm_packet, const struct batadv_hard_iface *if_incoming) @@ -918,17 +934,18 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct batadv_orig_node *orig_node; struct batadv_neigh_node *tmp_neigh_node; - int is_duplicate = 0; + int is_dup; int32_t seq_diff; int need_update = 0; - int set_mark, ret = -1; + int set_mark; + enum batadv_dup_status ret = BATADV_NO_DUP; uint32_t seqno = ntohl(batadv_ogm_packet->seqno); uint8_t *neigh_addr; uint8_t packet_count; orig_node = batadv_get_orig_node(bat_priv, batadv_ogm_packet->orig); if (!orig_node) - return 0; + return BATADV_NO_DUP; spin_lock_bh(&orig_node->ogm_cnt_lock); seq_diff = seqno - orig_node->last_real_seqno; @@ -936,22 +953,29 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, /* signalize caller that the packet is to be dropped. */ if (!hlist_empty(&orig_node->neigh_list) && batadv_window_protected(bat_priv, seq_diff, - &orig_node->batman_seqno_reset)) + &orig_node->batman_seqno_reset)) { + ret = BATADV_PROTECTED; goto out; + } rcu_read_lock(); hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { - is_duplicate |= batadv_test_bit(tmp_neigh_node->real_bits, - orig_node->last_real_seqno, - seqno); - neigh_addr = tmp_neigh_node->addr; + is_dup = batadv_test_bit(tmp_neigh_node->real_bits, + orig_node->last_real_seqno, + seqno); + if (batadv_compare_eth(neigh_addr, ethhdr->h_source) && - tmp_neigh_node->if_incoming == if_incoming) + tmp_neigh_node->if_incoming == if_incoming) { set_mark = 1; - else + if (is_dup) + ret = BATADV_NEIGH_DUP; + } else { set_mark = 0; + if (is_dup && (ret != BATADV_NEIGH_DUP)) + ret = BATADV_ORIG_DUP; + } /* if the window moved, set the update flag. */ need_update |= batadv_bit_get_packet(bat_priv, @@ -971,8 +995,6 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, orig_node->last_real_seqno = seqno; } - ret = is_duplicate; - out: spin_unlock_bh(&orig_node->ogm_cnt_lock); batadv_orig_node_free_ref(orig_node); @@ -994,7 +1016,8 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, int is_broadcast = 0, is_bidirect; bool is_single_hop_neigh = false; bool is_from_best_next_hop = false; - int is_duplicate, sameseq, simlar_ttl; + int sameseq, similar_ttl; + enum batadv_dup_status dup_status; uint32_t if_incoming_seqno; uint8_t *prev_sender; @@ -1138,10 +1161,10 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, if (!orig_node) return; - is_duplicate = batadv_iv_ogm_update_seqnos(ethhdr, batadv_ogm_packet, - if_incoming); + dup_status = batadv_iv_ogm_update_seqnos(ethhdr, batadv_ogm_packet, + if_incoming); - if (is_duplicate == -1) { + if (dup_status == BATADV_PROTECTED) { batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Drop packet: packet within seqno protection time (sender: %pM)\n", ethhdr->h_source); @@ -1211,11 +1234,12 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, * seqno and similar ttl as the non-duplicate */ sameseq = orig_node->last_real_seqno == ntohl(batadv_ogm_packet->seqno); - simlar_ttl = orig_node->last_ttl - 3 <= batadv_ogm_packet->header.ttl; - if (is_bidirect && (!is_duplicate || (sameseq && simlar_ttl))) + similar_ttl = orig_node->last_ttl - 3 <= batadv_ogm_packet->header.ttl; + if (is_bidirect && ((dup_status == BATADV_NO_DUP) || + (sameseq && similar_ttl))) batadv_iv_ogm_orig_update(bat_priv, orig_node, ethhdr, batadv_ogm_packet, if_incoming, - tt_buff, is_duplicate); + tt_buff, dup_status); /* is single hop (direct) neighbor */ if (is_single_hop_neigh) { @@ -1236,7 +1260,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, goto out_neigh; } - if (is_duplicate) { + if (dup_status == BATADV_NEIGH_DUP) { batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Drop packet: duplicate packet received\n"); goto out_neigh; -- cgit v0.10.2 From d5b4c93e67b0b1291aa8e2aaf694e40afc3412d0 Mon Sep 17 00:00:00 2001 From: Simon Wunderlich Date: Fri, 7 Jun 2013 16:52:05 +0200 Subject: batman-adv: Don't handle address updates when bla is disabled The bridge loop avoidance has a hook to handle address updates of the originator. These should not be handled when bridge loop avoidance is disabled - it might send some bridge loop avoidance packets which should not appear if bla is disabled. Signed-off-by: Simon Wunderlich Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 379061c..de27b31 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1067,6 +1067,10 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv, group = htons(crc16(0, primary_if->net_dev->dev_addr, ETH_ALEN)); bat_priv->bla.claim_dest.group = group; + /* purge everything when bridge loop avoidance is turned off */ + if (!atomic_read(&bat_priv->bridge_loop_avoidance)) + oldif = NULL; + if (!oldif) { batadv_bla_purge_claims(bat_priv, NULL, 1); batadv_bla_purge_backbone_gw(bat_priv, 1); -- cgit v0.10.2 From 7ee2aff373498a887cde0d564f89cf05377c538e Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 9 Jun 2013 16:02:03 +0100 Subject: drm/i915: Fix hotplug interrupt enabling for SDVOC A broken conditional would lead to SDVOC waiting upon hotplug events on SDVOB - and so miss all activity on its SDVO port. This regression has been introduced in commit 1d843f9de4e6dc6a899b6f07f106c00da09925e6 Author: Egbert Eich Date: Mon Feb 25 12:06:49 2013 -0500 DRM/I915: Add enum hpd_pin to intel_encoder. References: https://bugs.freedesktop.org/show_bug.cgi?id=58405 Signed-off-by: Chris Wilson [danvet: Add regression note.] Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 4c47b44..69886d9 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -2793,8 +2793,10 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob) /* Only enable the hotplug irq if we need it, to work around noisy * hotplug lines. */ - if (intel_sdvo->hotplug_active) - intel_encoder->hpd_pin = HPD_SDVO_B ? HPD_SDVO_B : HPD_SDVO_C; + if (intel_sdvo->hotplug_active) { + intel_encoder->hpd_pin = + intel_sdvo->is_sdvob ? HPD_SDVO_B : HPD_SDVO_C; + } intel_encoder->compute_config = intel_sdvo_compute_config; intel_encoder->disable = intel_disable_sdvo; -- cgit v0.10.2 From 7ba220cec0bbe9453c1f958cf282f84a157c924f Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 9 Jun 2013 16:02:04 +0100 Subject: drm/i915: Enable hotplug interrupts after querying hw capabilities. sdvo->hotplug_active is initialised during intel_sdvo_setup_outputs(), and so we never enabled the hotplug interrupts on SDVO as we were checking too early. This regression has been introduced somewhere in the hpd rework for the storm detection and handling starting with commit 1d843f9de4e6dc6a899b6f07f106c00da09925e6 Author: Egbert Eich Date: Mon Feb 25 12:06:49 2013 -0500 DRM/I915: Add enum hpd_pin to intel_encoder. and the follow-up patches to use the new encoder->hpd_pin variable for the different irq setup functions. The problem is that encoder->hpd_pin was set up _before_ the output setup was done and so before we could assess the hotplug capabilities of the outputs on an sdvo encoder. Reported-by: Alex Fiestas Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58405 Signed-off-by: Chris Wilson [danvet: Add regression note.] Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 69886d9..f44aa75 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -2790,14 +2790,6 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob) SDVOB_HOTPLUG_INT_STATUS_I915 : SDVOC_HOTPLUG_INT_STATUS_I915; } - /* Only enable the hotplug irq if we need it, to work around noisy - * hotplug lines. - */ - if (intel_sdvo->hotplug_active) { - intel_encoder->hpd_pin = - intel_sdvo->is_sdvob ? HPD_SDVO_B : HPD_SDVO_C; - } - intel_encoder->compute_config = intel_sdvo_compute_config; intel_encoder->disable = intel_disable_sdvo; intel_encoder->mode_set = intel_sdvo_mode_set; @@ -2816,6 +2808,14 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob) goto err_output; } + /* Only enable the hotplug irq if we need it, to work around noisy + * hotplug lines. + */ + if (intel_sdvo->hotplug_active) { + intel_encoder->hpd_pin = + intel_sdvo->is_sdvob ? HPD_SDVO_B : HPD_SDVO_C; + } + /* * Cloning SDVO with anything is often impossible, since the SDVO * encoder can request a special input timing mode. And even if that's -- cgit v0.10.2 From c3456fb3e4712d0448592af3c5d644c9472cd3c1 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 10 Jun 2013 09:47:58 +0200 Subject: drm/i915: prefer VBT modes for SVDO-LVDS over EDID In commit 53d3b4d7778daf15900867336c85d3f8dd70600c Author: Egbert Eich Date: Tue Jun 4 17:13:21 2013 +0200 drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC Egbert Eich fixed a long-standing bug where we simply used a non-working i2c controller to read the EDID for SDVO-LVDS panels. Unfortunately some machines seem to not be able to cope with the mode provided in the EDID. Specifically they seem to not be able to cope with a 4x pixel mutliplier instead of a 2x one, which seems to have been worked around by slightly changing the panels native mode in the VBT so that the dotclock is just barely above 50MHz. Since it took forever to notice the breakage it's fairly safe to assume that at least for SDVO-LVDS panels the VBT contains fairly sane data. So just switch around the order and use VBT modes first. v2: Also add EDID modes just in case, and spell Egbert correctly. v3: Elaborate a bit more about what's going on on Chris' machine. Cc: Egbert Eich Cc: Chris Wilson Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65524 Cc: stable@vger.kernel.org Reported-and-tested-by: Chris Wilson Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index f44aa75..d4ea6c2 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1777,10 +1777,13 @@ static void intel_sdvo_get_lvds_modes(struct drm_connector *connector) * arranged in priority order. */ intel_ddc_get_modes(connector, &intel_sdvo->ddc); - if (list_empty(&connector->probed_modes) == false) - goto end; - /* Fetch modes from VBT */ + /* + * Fetch modes from VBT. For SDVO prefer the VBT mode since some + * SDVO->LVDS transcoders can't cope with the EDID mode. Since + * drm_mode_probed_add adds the mode at the head of the list we add it + * last. + */ if (dev_priv->sdvo_lvds_vbt_mode != NULL) { newmode = drm_mode_duplicate(connector->dev, dev_priv->sdvo_lvds_vbt_mode); @@ -1792,7 +1795,6 @@ static void intel_sdvo_get_lvds_modes(struct drm_connector *connector) } } -end: list_for_each_entry(newmode, &connector->probed_modes, head) { if (newmode->type & DRM_MODE_TYPE_PREFERRED) { intel_sdvo->sdvo_lvds_fixed_mode = -- cgit v0.10.2 From 8c9b7a7b2fc2750af418ddc28e707c42e78aa0bf Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 10 Jun 2013 13:00:29 +0200 Subject: ACPI / video: Do not bind to device objects with a scan handler With the introduction of ACPI scan handlers, ACPI device objects with an ACPI scan handler attached to them must not be bound to by ACPI drivers any more. Unfortunately, however, the ACPI video driver attempts to do just that if there is a _ROM ACPI control method defined under a device object with an ACPI scan handler. Prevent that from happening by making the video driver's "add" routine check if the device object already has an ACPI scan handler attached to it and return an error code in that case. That is not sufficient, though, because acpi_bus_driver_init() would then clear the device object's driver_data that may be set by its scan handler, so for the fix to work acpi_bus_driver_init() has to be modified to leave driver_data as is on errors. References: https://bugzilla.kernel.org/show_bug.cgi?id=58091 Bisected-and-tested-by: Dmitry S. Demin Reported-and-tested-by: Jason Cassell Tracked-down-by: Aaron Lu Cc: 3.9+ Signed-off-by: Rafael J. Wysocki Reviewed-by: Aaron Lu diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 44225cb..b14ac46 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1017,11 +1017,8 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver) return -ENOSYS; result = driver->ops.add(device); - if (result) { - device->driver = NULL; - device->driver_data = NULL; + if (result) return result; - } device->driver = driver; diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 5d7075d..440eadf 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1722,6 +1722,9 @@ static int acpi_video_bus_add(struct acpi_device *device) int error; acpi_status status; + if (device->handler) + return -EINVAL; + status = acpi_walk_namespace(ACPI_TYPE_DEVICE, device->parent->handle, 1, acpi_video_bus_match, NULL, -- cgit v0.10.2 From a8241c63517ec0b900695daa9003cddc41c536a1 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 3 Jun 2013 12:00:49 +0300 Subject: ipvs: info leak in __ip_vs_get_dest_entries() The entry struct has a 2 byte hole after ->port and another 4 byte hole after ->stats.outpkts. You must have CAP_NET_ADMIN in your namespace to hit this information leak. Signed-off-by: Dan Carpenter Acked-by: Julian Anastasov Signed-off-by: Simon Horman Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 5b142fb..9e6c2a0 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -2542,6 +2542,7 @@ __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get, struct ip_vs_dest *dest; struct ip_vs_dest_entry entry; + memset(&entry, 0, sizeof(entry)); list_for_each_entry(dest, &svc->destinations, n_list) { if (count >= get->num_dests) break; -- cgit v0.10.2 From c46b54f7406780ec4cf9c9124d1cfb777674dc70 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 10 Jun 2013 15:34:04 +0200 Subject: s390/pci: Implement IRQ functions if !PCI All architectures must implement IRQ functions. Since various dependencies on !S390 were removed, there are various drivers that can be selected but will fail to link. Provide a dummy implementation of these functions for the !PCI case. Signed-off-by: Ben Hutchings Cc: stable@vger.kernel.org # 3.9 Acked-by: David S. Miller Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index f7fb589..408e866 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -311,3 +311,67 @@ void measurement_alert_subclass_unregister(void) spin_unlock(&ma_subclass_lock); } EXPORT_SYMBOL(measurement_alert_subclass_unregister); + +void synchronize_irq(unsigned int irq) +{ + /* + * Not needed, the handler is protected by a lock and IRQs that occur + * after the handler is deleted are just NOPs. + */ +} +EXPORT_SYMBOL_GPL(synchronize_irq); + +#ifndef CONFIG_PCI + +/* Only PCI devices have dynamically-defined IRQ handlers */ + +int request_irq(unsigned int irq, irq_handler_t handler, + unsigned long irqflags, const char *devname, void *dev_id) +{ + return -EINVAL; +} +EXPORT_SYMBOL_GPL(request_irq); + +void free_irq(unsigned int irq, void *dev_id) +{ + WARN_ON(1); +} +EXPORT_SYMBOL_GPL(free_irq); + +void enable_irq(unsigned int irq) +{ + WARN_ON(1); +} +EXPORT_SYMBOL_GPL(enable_irq); + +void disable_irq(unsigned int irq) +{ + WARN_ON(1); +} +EXPORT_SYMBOL_GPL(disable_irq); + +#endif /* !CONFIG_PCI */ + +void disable_irq_nosync(unsigned int irq) +{ + disable_irq(irq); +} +EXPORT_SYMBOL_GPL(disable_irq_nosync); + +unsigned long probe_irq_on(void) +{ + return 0; +} +EXPORT_SYMBOL_GPL(probe_irq_on); + +int probe_irq_off(unsigned long val) +{ + return 0; +} +EXPORT_SYMBOL_GPL(probe_irq_off); + +unsigned int probe_irq_mask(unsigned long val) +{ + return val; +} +EXPORT_SYMBOL_GPL(probe_irq_mask); diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index e6f15b5..f1e5be8 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -302,15 +302,6 @@ static int zpci_cfg_store(struct zpci_dev *zdev, int offset, u32 val, u8 len) return rc; } -void synchronize_irq(unsigned int irq) -{ - /* - * Not needed, the handler is protected by a lock and IRQs that occur - * after the handler is deleted are just NOPs. - */ -} -EXPORT_SYMBOL_GPL(synchronize_irq); - void enable_irq(unsigned int irq) { struct msi_desc *msi = irq_get_msi_desc(irq); @@ -327,30 +318,6 @@ void disable_irq(unsigned int irq) } EXPORT_SYMBOL_GPL(disable_irq); -void disable_irq_nosync(unsigned int irq) -{ - disable_irq(irq); -} -EXPORT_SYMBOL_GPL(disable_irq_nosync); - -unsigned long probe_irq_on(void) -{ - return 0; -} -EXPORT_SYMBOL_GPL(probe_irq_on); - -int probe_irq_off(unsigned long val) -{ - return 0; -} -EXPORT_SYMBOL_GPL(probe_irq_off); - -unsigned int probe_irq_mask(unsigned long val) -{ - return val; -} -EXPORT_SYMBOL_GPL(probe_irq_mask); - void pcibios_fixup_bus(struct pci_bus *bus) { } -- cgit v0.10.2 From b2c75c446ae72387916e2caf6e6dca815b6e5e6e Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Fri, 7 Jun 2013 15:26:03 -0400 Subject: xen/tmem: Don't over-write tmem_frontswap_poolid after tmem_frontswap_init set it. Commit 10a7a0771399a57a297fca9615450dbb3f88081a ("xen: tmem: enable Xen tmem shim to be built/loaded as a module") allows the tmem module to be loaded any time. For this work the frontswap API had to be able to asynchronously to call tmem_frontswap_init before or after the swap image had been set. That was added in git commit 905cd0e1bf9ffe82d6906a01fd974ea0f70be97a ("mm: frontswap: lazy initialization to allow tmem backends to build/run as modules"). Which means we could do this (The common case): modprobe tmem [so calls frontswap_register_ops, no ->init] modifies tmem_frontswap_poolid = -1 swapon /dev/xvda1 [__frontswap_init, calls -> init, tmem_frontswap_poolid is < 0 so tmem hypercall done] Or the failing one: swapon /dev/xvda1 [calls __frontswap_init, sets the need_init bitmap] modprobe tmem [calls frontswap_register_ops, -->init calls, finds out tmem_frontswap_poolid is 0, does not make a hypercall. Later in the module_init, sets tmem_frontswap_poolid=-1] Which meant that in the failing case we would not call the hypercall to initialize the pool and never be able to make any frontswap backend calls. Moving the frontswap_register_ops after setting the tmem_frontswap_poolid fixes it. Signed-off-by: Konrad Rzeszutek Wilk Reviewed-by: Bob Liu diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c index cc072c6..0f0493c 100644 --- a/drivers/xen/tmem.c +++ b/drivers/xen/tmem.c @@ -379,10 +379,10 @@ static int xen_tmem_init(void) #ifdef CONFIG_FRONTSWAP if (tmem_enabled && frontswap) { char *s = ""; - struct frontswap_ops *old_ops = - frontswap_register_ops(&tmem_frontswap_ops); + struct frontswap_ops *old_ops; tmem_frontswap_poolid = -1; + old_ops = frontswap_register_ops(&tmem_frontswap_ops); if (IS_ERR(old_ops) || old_ops) { if (IS_ERR(old_ops)) return PTR_ERR(old_ops); -- cgit v0.10.2 From e63a24ddc79cc801766646fb643451ad366a1121 Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Sat, 8 Jun 2013 19:15:41 +0000 Subject: MIPS: Alchemy: fix wait function Only an interrupt can wake the core from 'wait', enable interrupts locally before executing 'wait'. [ralf@linux-mips.org: This leave the race between an interrupt that's setting TIF_NEED_RESCHEd and entering the WAIT status. but at least it's going to bring Alchemy back from the dead, so I'm going to apply this patch.] Signed-off-by: Manuel Lauss Cc: Linux-MIPS Cc: Maciej W. Rozycki Patchwork: https://patchwork.linux-mips.org/patch/5408/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c index 3b09b88..0c655de 100644 --- a/arch/mips/kernel/idle.c +++ b/arch/mips/kernel/idle.c @@ -93,26 +93,27 @@ static void rm7k_wait_irqoff(void) } /* - * The Au1xxx wait is available only if using 32khz counter or - * external timer source, but specifically not CP0 Counter. - * alchemy/common/time.c may override cpu_wait! + * Au1 'wait' is only useful when the 32kHz counter is used as timer, + * since coreclock (and the cp0 counter) stops upon executing it. Only an + * interrupt can wake it, so they must be enabled before entering idle modes. */ static void au1k_wait(void) { + unsigned long c0status = read_c0_status() | 1; /* irqs on */ + __asm__( " .set mips3 \n" " cache 0x14, 0(%0) \n" " cache 0x14, 32(%0) \n" " sync \n" - " nop \n" + " mtc0 %1, $12 \n" /* wr c0status */ " wait \n" " nop \n" " nop \n" " nop \n" " nop \n" " .set mips0 \n" - : : "r" (au1k_wait)); - local_irq_enable(); + : : "r" (au1k_wait), "r" (c0status)); } static int __initdata nowait; -- cgit v0.10.2 From d414976d1ca721456f7b7c603a8699d117c2ec07 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Mon, 10 Jun 2013 12:16:16 +0000 Subject: MIPS: include: mmu_context.h: Replace VIRTUALIZATION with KVM The kvm_* symbols are only available if KVM is selected. Fixes the following linking problem on a randconfig: arch/mips/built-in.o: In function `local_flush_tlb_mm': (.text+0x18a94): undefined reference to `kvm_local_flush_tlb_all' arch/mips/built-in.o: In function `local_flush_tlb_range': (.text+0x18d0c): undefined reference to `kvm_local_flush_tlb_all' kernel/built-in.o: In function `__schedule': core.c:(.sched.text+0x2a00): undefined reference to `kvm_local_flush_tlb_all' mm/built-in.o: In function `use_mm': (.text+0x30214): undefined reference to `kvm_local_flush_tlb_all' fs/built-in.o: In function `flush_old_exec': (.text+0xf0a0): undefined reference to `kvm_local_flush_tlb_all' make: *** [vmlinux] Error 1 Signed-off-by: Markos Chandras Acked-by: Steven J. Hill Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5437/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index 8201160..516e6e9 100644 --- a/arch/mips/include/asm/mmu_context.h +++ b/arch/mips/include/asm/mmu_context.h @@ -117,7 +117,7 @@ get_new_mmu_context(struct mm_struct *mm, unsigned long cpu) if (! ((asid += ASID_INC) & ASID_MASK) ) { if (cpu_has_vtag_icache) flush_icache_all(); -#ifdef CONFIG_VIRTUALIZATION +#ifdef CONFIG_KVM kvm_local_flush_tlb_all(); /* start new asid cycle */ #else local_flush_tlb_all(); /* start new asid cycle */ -- cgit v0.10.2 From cb2f9938d0a57625644750e66373d3bf4d3a1601 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Mon, 10 Jun 2013 10:35:26 +0000 Subject: MIPS: ftrace: Add missing CONFIG_DYNAMIC_FTRACE arch_ftrace_update_code and ftrace_modify_all_code are only available if CONFIG_DYNAMIC_FTRACE is selected. Fixes the following build problem on MIPS randconfig: arch/mips/kernel/ftrace.c: In function 'arch_ftrace_update_code': arch/mips/kernel/ftrace.c:31:2: error: implicit declaration of function 'ftrace_modify_all_code' [-Werror=implicit-function-declaration] Signed-off-by: Markos Chandras Acked-by: Steven J. Hill Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5435/ Signed-off-by: Ralf Baechle diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c index cf5509f..dba90ec 100644 --- a/arch/mips/kernel/ftrace.c +++ b/arch/mips/kernel/ftrace.c @@ -25,12 +25,16 @@ #define MCOUNT_OFFSET_INSNS 4 #endif +#ifdef CONFIG_DYNAMIC_FTRACE + /* Arch override because MIPS doesn't need to run this from stop_machine() */ void arch_ftrace_update_code(int command) { ftrace_modify_all_code(command); } +#endif + /* * Check if the address is in kernel space * -- cgit v0.10.2 From 6c6cf64b16438eac6da9a90412a82316ad196e7c Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Mon, 10 Jun 2013 18:22:26 +0200 Subject: spi: s3c64xx: Fix pm_runtime_get_sync() return value check If the device is already in a runtime PM enabled state pm_runtime_get_sync() will return 1, so a test for negative value should be used to check for errors. Without this patch there are seen errors like: [ 8.540000] s3c64xx-spi 13930000.spi: Failed to enable device: 1 [ 8.545000] spi_master spi1: failed to prepare transfer hardware Likely because the driver uses synchronous API to runtime enable the device and asynchronous one to disable it. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mark Brown Cc: stable@vger.kernel.org diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 5000586..71cc3e6 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -444,7 +444,7 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi) } ret = pm_runtime_get_sync(&sdd->pdev->dev); - if (ret != 0) { + if (ret < 0) { dev_err(dev, "Failed to enable device: %d\n", ret); goto out_tx; } -- cgit v0.10.2 From 21886725d58e92188159731c7c1aac803dd6b9dc Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 10 Jun 2013 18:29:37 +0200 Subject: USB: f81232: fix device initialisation at open Do not use uninitialised termios data to determine when to configure the device at open. This also prevents stack data from leaking to userspace. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 090b411..7d8dd5a 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -165,11 +165,12 @@ static void f81232_set_termios(struct tty_struct *tty, /* FIXME - Stubbed out for now */ /* Don't change anything if nothing has changed */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* Do the real work here... */ - tty_termios_copy_hw(&tty->termios, old_termios); + if (old_termios) + tty_termios_copy_hw(&tty->termios, old_termios); } static int f81232_tiocmget(struct tty_struct *tty) @@ -187,12 +188,11 @@ static int f81232_tiocmset(struct tty_struct *tty, static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; int result; /* Setup termios */ if (tty) - f81232_set_termios(tty, port, &tmp_termios); + f81232_set_termios(tty, port, NULL); result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) { -- cgit v0.10.2 From 5e4211f1c47560c36a8b3d4544dfd866dcf7ccd0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 10 Jun 2013 18:29:39 +0200 Subject: USB: spcp8x5: fix device initialisation at open Do not use uninitialised termios data to determine when to configure the device at open. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index cf3df79..ddf6c47 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -291,7 +291,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; unsigned int cflag = tty->termios.c_cflag; - unsigned int old_cflag = old_termios->c_cflag; unsigned short uartdata; unsigned char buf[2] = {0, 0}; int baud; @@ -299,15 +298,15 @@ static void spcp8x5_set_termios(struct tty_struct *tty, u8 control; /* check that they really want us to change something */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* set DTR/RTS active */ spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; - if ((old_cflag & CBAUD) == B0) { + if (old_termios && (old_termios->c_cflag & CBAUD) == B0) { priv->line_control |= MCR_DTR; - if (!(old_cflag & CRTSCTS)) + if (!(old_termios->c_cflag & CRTSCTS)) priv->line_control |= MCR_RTS; } if (control != priv->line_control) { @@ -394,7 +393,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; struct usb_serial *serial = port->serial; struct spcp8x5_private *priv = usb_get_serial_port_data(port); int ret; @@ -411,7 +409,7 @@ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) spcp8x5_set_ctrl_line(port, priv->line_control); if (tty) - spcp8x5_set_termios(tty, port, &tmp_termios); + spcp8x5_set_termios(tty, port, NULL); port->port.drain_delay = 256; -- cgit v0.10.2 From 2d8f4447b58bba5f8cb895c07690434c02307eaf Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 10 Jun 2013 18:29:38 +0200 Subject: USB: pl2303: fix device initialisation at open Do not use uninitialised termios data to determine when to configure the device at open. This also prevents stack data from leaking to userspace in the OOM error path. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 7151659..048cd44 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -284,7 +284,7 @@ static void pl2303_set_termios(struct tty_struct *tty, serial settings even to the same values as before. Thus we actually need to filter in this specific case */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; cflag = tty->termios.c_cflag; @@ -293,7 +293,8 @@ static void pl2303_set_termios(struct tty_struct *tty, if (!buf) { dev_err(&port->dev, "%s - out of memory.\n", __func__); /* Report back no change occurred */ - tty->termios = *old_termios; + if (old_termios) + tty->termios = *old_termios; return; } @@ -433,7 +434,7 @@ static void pl2303_set_termios(struct tty_struct *tty, control = priv->line_control; if ((cflag & CBAUD) == B0) priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); - else if ((old_termios->c_cflag & CBAUD) == B0) + else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) priv->line_control |= (CONTROL_DTR | CONTROL_RTS); if (control != priv->line_control) { control = priv->line_control; @@ -492,7 +493,6 @@ static void pl2303_close(struct usb_serial_port *port) static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; struct usb_serial *serial = port->serial; struct pl2303_serial_private *spriv = usb_get_serial_data(serial); int result; @@ -508,7 +508,7 @@ static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) /* Setup termios */ if (tty) - pl2303_set_termios(tty, port, &tmp_termios); + pl2303_set_termios(tty, port, NULL); result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) { -- cgit v0.10.2 From d62840995a99c9766803d54e9d7923f247a1c1db Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Wed, 22 May 2013 02:41:36 -0700 Subject: trace: Allow idle-safe tracepoints to be called from irq __DECLARE_TRACE_RCU() currently creates an _rcuidle() tracepoint which may safely be invoked from what RCU considers to be an idle CPU. However, these _rcuidle() tracepoints may -not- be invoked from the handler of an irq taken from idle, because rcu_idle_enter() zeroes RCU's nesting-level counter, so that the rcu_irq_exit() returning to idle will trigger a WARN_ON_ONCE(). This commit therefore substitutes rcu_irq_enter() for rcu_idle_exit() and rcu_irq_exit() for rcu_idle_enter() in order to make the _rcuidle() tracepoints usable from irq handlers as well as from process context. Reported-by: Dave Jones Signed-off-by: Paul E. McKenney Cc: Steven Rostedt diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 2f322c3..f8e084d 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -145,8 +145,8 @@ static inline void tracepoint_synchronize_unregister(void) TP_PROTO(data_proto), \ TP_ARGS(data_args), \ TP_CONDITION(cond), \ - rcu_idle_exit(), \ - rcu_idle_enter()); \ + rcu_irq_enter(), \ + rcu_irq_exit()); \ } #else #define __DECLARE_TRACE_RCU(name, proto, args, cond, data_proto, data_args) -- cgit v0.10.2 From 016a8d5be6ddcc72ef0432d82d9f6fa34f61b907 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 28 May 2013 17:32:53 -0400 Subject: rcu: Don't call wakeup() with rcu_node structure ->lock held This commit fixes a lockdep-detected deadlock by moving a wake_up() call out from a rnp->lock critical section. Please see below for the long version of this story. On Tue, 2013-05-28 at 16:13 -0400, Dave Jones wrote: > [12572.705832] ====================================================== > [12572.750317] [ INFO: possible circular locking dependency detected ] > [12572.796978] 3.10.0-rc3+ #39 Not tainted > [12572.833381] ------------------------------------------------------- > [12572.862233] trinity-child17/31341 is trying to acquire lock: > [12572.870390] (rcu_node_0){..-.-.}, at: [] rcu_read_unlock_special+0x9f/0x4c0 > [12572.878859] > but task is already holding lock: > [12572.894894] (&ctx->lock){-.-...}, at: [] perf_lock_task_context+0x7d/0x2d0 > [12572.903381] > which lock already depends on the new lock. > > [12572.927541] > the existing dependency chain (in reverse order) is: > [12572.943736] > -> #4 (&ctx->lock){-.-...}: > [12572.960032] [] lock_acquire+0x91/0x1f0 > [12572.968337] [] _raw_spin_lock+0x40/0x80 > [12572.976633] [] __perf_event_task_sched_out+0x2e7/0x5e0 > [12572.984969] [] perf_event_task_sched_out+0x93/0xa0 > [12572.993326] [] __schedule+0x2cf/0x9c0 > [12573.001652] [] schedule_user+0x2e/0x70 > [12573.009998] [] retint_careful+0x12/0x2e > [12573.018321] > -> #3 (&rq->lock){-.-.-.}: > [12573.034628] [] lock_acquire+0x91/0x1f0 > [12573.042930] [] _raw_spin_lock+0x40/0x80 > [12573.051248] [] wake_up_new_task+0xb7/0x260 > [12573.059579] [] do_fork+0x105/0x470 > [12573.067880] [] kernel_thread+0x26/0x30 > [12573.076202] [] rest_init+0x23/0x140 > [12573.084508] [] start_kernel+0x3f1/0x3fe > [12573.092852] [] x86_64_start_reservations+0x2a/0x2c > [12573.101233] [] x86_64_start_kernel+0xcc/0xcf > [12573.109528] > -> #2 (&p->pi_lock){-.-.-.}: > [12573.125675] [] lock_acquire+0x91/0x1f0 > [12573.133829] [] _raw_spin_lock_irqsave+0x4b/0x90 > [12573.141964] [] try_to_wake_up+0x31/0x320 > [12573.150065] [] default_wake_function+0x12/0x20 > [12573.158151] [] autoremove_wake_function+0x18/0x40 > [12573.166195] [] __wake_up_common+0x58/0x90 > [12573.174215] [] __wake_up+0x39/0x50 > [12573.182146] [] rcu_start_gp_advanced.isra.11+0x4a/0x50 > [12573.190119] [] rcu_start_future_gp+0x1c9/0x1f0 > [12573.198023] [] rcu_nocb_kthread+0x114/0x930 > [12573.205860] [] kthread+0xed/0x100 > [12573.213656] [] ret_from_fork+0x7c/0xb0 > [12573.221379] > -> #1 (&rsp->gp_wq){..-.-.}: > [12573.236329] [] lock_acquire+0x91/0x1f0 > [12573.243783] [] _raw_spin_lock_irqsave+0x4b/0x90 > [12573.251178] [] __wake_up+0x23/0x50 > [12573.258505] [] rcu_start_gp_advanced.isra.11+0x4a/0x50 > [12573.265891] [] rcu_start_future_gp+0x1c9/0x1f0 > [12573.273248] [] rcu_nocb_kthread+0x114/0x930 > [12573.280564] [] kthread+0xed/0x100 > [12573.287807] [] ret_from_fork+0x7c/0xb0 Notice the above call chain. rcu_start_future_gp() is called with the rnp->lock held. Then it calls rcu_start_gp_advance, which does a wakeup. You can't do wakeups while holding the rnp->lock, as that would mean that you could not do a rcu_read_unlock() while holding the rq lock, or any lock that was taken while holding the rq lock. This is because... (See below). > [12573.295067] > -> #0 (rcu_node_0){..-.-.}: > [12573.309293] [] __lock_acquire+0x1786/0x1af0 > [12573.316568] [] lock_acquire+0x91/0x1f0 > [12573.323825] [] _raw_spin_lock+0x40/0x80 > [12573.331081] [] rcu_read_unlock_special+0x9f/0x4c0 > [12573.338377] [] __rcu_read_unlock+0x96/0xa0 > [12573.345648] [] perf_lock_task_context+0x143/0x2d0 > [12573.352942] [] find_get_context+0x4e/0x1f0 > [12573.360211] [] SYSC_perf_event_open+0x514/0xbd0 > [12573.367514] [] SyS_perf_event_open+0x9/0x10 > [12573.374816] [] tracesys+0xdd/0xe2 Notice the above trace. perf took its own ctx->lock, which can be taken while holding the rq lock. While holding this lock, it did a rcu_read_unlock(). The perf_lock_task_context() basically looks like: rcu_read_lock(); raw_spin_lock(ctx->lock); rcu_read_unlock(); Now, what looks to have happened, is that we scheduled after taking that first rcu_read_lock() but before taking the spin lock. When we scheduled back in and took the ctx->lock, the following rcu_read_unlock() triggered the "special" code. The rcu_read_unlock_special() takes the rnp->lock, which gives us a possible deadlock scenario. CPU0 CPU1 CPU2 ---- ---- ---- rcu_nocb_kthread() lock(rq->lock); lock(ctx->lock); lock(rnp->lock); wake_up(); lock(rq->lock); rcu_read_unlock(); rcu_read_unlock_special(); lock(rnp->lock); lock(ctx->lock); **** DEADLOCK **** > [12573.382068] > other info that might help us debug this: > > [12573.403229] Chain exists of: > rcu_node_0 --> &rq->lock --> &ctx->lock > > [12573.424471] Possible unsafe locking scenario: > > [12573.438499] CPU0 CPU1 > [12573.445599] ---- ---- > [12573.452691] lock(&ctx->lock); > [12573.459799] lock(&rq->lock); > [12573.467010] lock(&ctx->lock); > [12573.474192] lock(rcu_node_0); > [12573.481262] > *** DEADLOCK *** > > [12573.501931] 1 lock held by trinity-child17/31341: > [12573.508990] #0: (&ctx->lock){-.-...}, at: [] perf_lock_task_context+0x7d/0x2d0 > [12573.516475] > stack backtrace: > [12573.530395] CPU: 1 PID: 31341 Comm: trinity-child17 Not tainted 3.10.0-rc3+ #39 > [12573.545357] ffffffff825b4f90 ffff880219f1dbc0 ffffffff816e375b ffff880219f1dc00 > [12573.552868] ffffffff816dfa5d ffff880219f1dc50 ffff88023ce4d1f8 ffff88023ce4ca40 > [12573.560353] 0000000000000001 0000000000000001 ffff88023ce4d1f8 ffff880219f1dcc0 > [12573.567856] Call Trace: > [12573.575011] [] dump_stack+0x19/0x1b > [12573.582284] [] print_circular_bug+0x200/0x20f > [12573.589637] [] __lock_acquire+0x1786/0x1af0 > [12573.596982] [] ? sched_clock_cpu+0xb5/0x100 > [12573.604344] [] lock_acquire+0x91/0x1f0 > [12573.611652] [] ? rcu_read_unlock_special+0x9f/0x4c0 > [12573.619030] [] _raw_spin_lock+0x40/0x80 > [12573.626331] [] ? rcu_read_unlock_special+0x9f/0x4c0 > [12573.633671] [] rcu_read_unlock_special+0x9f/0x4c0 > [12573.640992] [] ? perf_lock_task_context+0x7d/0x2d0 > [12573.648330] [] ? put_lock_stats.isra.29+0xe/0x40 > [12573.655662] [] ? delay_tsc+0x90/0xe0 > [12573.662964] [] __rcu_read_unlock+0x96/0xa0 > [12573.670276] [] perf_lock_task_context+0x143/0x2d0 > [12573.677622] [] ? __perf_event_enable+0x370/0x370 > [12573.684981] [] find_get_context+0x4e/0x1f0 > [12573.692358] [] SYSC_perf_event_open+0x514/0xbd0 > [12573.699753] [] ? get_parent_ip+0xd/0x50 > [12573.707135] [] ? trace_hardirqs_on_caller+0xfd/0x1c0 > [12573.714599] [] SyS_perf_event_open+0x9/0x10 > [12573.721996] [] tracesys+0xdd/0xe2 This commit delays the wakeup via irq_work(), which is what perf and ftrace use to perform wakeups in critical sections. Reported-by: Dave Jones Signed-off-by: Steven Rostedt Signed-off-by: Paul E. McKenney diff --git a/init/Kconfig b/init/Kconfig index 9d3a788..2d9b831 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -431,6 +431,7 @@ choice config TREE_RCU bool "Tree-based hierarchical RCU" depends on !PREEMPT && SMP + select IRQ_WORK help This option selects the RCU implementation that is designed for very large SMP system with hundreds or diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 16ea679..b61d20c 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1613,6 +1613,14 @@ static int __noreturn rcu_gp_kthread(void *arg) } } +static void rsp_wakeup(struct irq_work *work) +{ + struct rcu_state *rsp = container_of(work, struct rcu_state, wakeup_work); + + /* Wake up rcu_gp_kthread() to start the grace period. */ + wake_up(&rsp->gp_wq); +} + /* * Start a new RCU grace period if warranted, re-initializing the hierarchy * in preparation for detecting the next grace period. The caller must hold @@ -1637,8 +1645,12 @@ rcu_start_gp_advanced(struct rcu_state *rsp, struct rcu_node *rnp, } rsp->gp_flags = RCU_GP_FLAG_INIT; - /* Wake up rcu_gp_kthread() to start the grace period. */ - wake_up(&rsp->gp_wq); + /* + * We can't do wakeups while holding the rnp->lock, as that + * could cause possible deadlocks with the rq->lock. Deter + * the wakeup to interrupt context. + */ + irq_work_queue(&rsp->wakeup_work); } /* @@ -3235,6 +3247,7 @@ static void __init rcu_init_one(struct rcu_state *rsp, rsp->rda = rda; init_waitqueue_head(&rsp->gp_wq); + init_irq_work(&rsp->wakeup_work, rsp_wakeup); rnp = rsp->level[rcu_num_lvls - 1]; for_each_possible_cpu(i) { while (i > rnp->grphi) diff --git a/kernel/rcutree.h b/kernel/rcutree.h index da77a8f..4df5034 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -27,6 +27,7 @@ #include #include #include +#include /* * Define shape of hierarchy based on NR_CPUS, CONFIG_RCU_FANOUT, and @@ -442,6 +443,7 @@ struct rcu_state { char *name; /* Name of structure. */ char abbr; /* Abbreviated name. */ struct list_head flavors; /* List of RCU flavors. */ + struct irq_work wakeup_work; /* Postponed wakeups */ }; /* Values for rcu_state structure's gp_flags field. */ -- cgit v0.10.2 From 971394f389992f8462c4e5ae0e3b49a10a9534a3 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sun, 2 Jun 2013 07:13:57 -0700 Subject: rcu: Fix deadlock with CPU hotplug, RCU GP init, and timer migration In Steven Rostedt's words: > I've been debugging the last couple of days why my tests have been > locking up. One of my tracing tests, runs all available tracers. The > lockup always happened with the mmiotrace, which is used to trace > interactions between priority drivers and the kernel. But to do this > easily, when the tracer gets registered, it disables all but the boot > CPUs. The lockup always happened after it got done disabling the CPUs. > > Then I decided to try this: > > while :; do > for i in 1 2 3; do > echo 0 > /sys/devices/system/cpu/cpu$i/online > done > for i in 1 2 3; do > echo 1 > /sys/devices/system/cpu/cpu$i/online > done > done > > Well, sure enough, that locked up too, with the same users. Doing a > sysrq-w (showing all blocked tasks): > > [ 2991.344562] task PC stack pid father > [ 2991.344562] rcu_preempt D ffff88007986fdf8 0 10 2 0x00000000 > [ 2991.344562] ffff88007986fc98 0000000000000002 ffff88007986fc48 0000000000000908 > [ 2991.344562] ffff88007986c280 ffff88007986ffd8 ffff88007986ffd8 00000000001d3c80 > [ 2991.344562] ffff880079248a40 ffff88007986c280 0000000000000000 00000000fffd4295 > [ 2991.344562] Call Trace: > [ 2991.344562] [] schedule+0x64/0x66 > [ 2991.344562] [] schedule_timeout+0xbc/0xf9 > [ 2991.344562] [] ? ftrace_call+0x5/0x2f > [ 2991.344562] [] ? cascade+0xa8/0xa8 > [ 2991.344562] [] schedule_timeout_uninterruptible+0x1e/0x20 > [ 2991.344562] [] rcu_gp_kthread+0x502/0x94b > [ 2991.344562] [] ? __init_waitqueue_head+0x50/0x50 > [ 2991.344562] [] ? rcu_gp_fqs+0x64/0x64 > [ 2991.344562] [] kthread+0xb1/0xb9 > [ 2991.344562] [] ? lock_release_holdtime.part.23+0x4e/0x55 > [ 2991.344562] [] ? __init_kthread_worker+0x58/0x58 > [ 2991.344562] [] ret_from_fork+0x7c/0xb0 > [ 2991.344562] [] ? __init_kthread_worker+0x58/0x58 > [ 2991.344562] kworker/0:1 D ffffffff81a30680 0 47 2 0x00000000 > [ 2991.344562] Workqueue: events cpuset_hotplug_workfn > [ 2991.344562] ffff880078dbbb58 0000000000000002 0000000000000006 00000000000000d8 > [ 2991.344562] ffff880078db8100 ffff880078dbbfd8 ffff880078dbbfd8 00000000001d3c80 > [ 2991.344562] ffff8800779ca5c0 ffff880078db8100 ffffffff81541fcf 0000000000000000 > [ 2991.344562] Call Trace: > [ 2991.344562] [] ? __mutex_lock_common+0x3d4/0x609 > [ 2991.344562] [] schedule+0x64/0x66 > [ 2991.344562] [] schedule_preempt_disabled+0x18/0x24 > [ 2991.344562] [] __mutex_lock_common+0x3d4/0x609 > [ 2991.344562] [] ? get_online_cpus+0x3c/0x50 > [ 2991.344562] [] ? get_online_cpus+0x3c/0x50 > [ 2991.344562] [] mutex_lock_nested+0x3b/0x40 > [ 2991.344562] [] get_online_cpus+0x3c/0x50 > [ 2991.344562] [] rebuild_sched_domains_locked+0x6e/0x3a8 > [ 2991.344562] [] rebuild_sched_domains+0x1c/0x2a > [ 2991.344562] [] cpuset_hotplug_workfn+0x1c7/0x1d3 > [ 2991.344562] [] ? cpuset_hotplug_workfn+0x5/0x1d3 > [ 2991.344562] [] process_one_work+0x2d4/0x4d1 > [ 2991.344562] [] ? process_one_work+0x207/0x4d1 > [ 2991.344562] [] worker_thread+0x2e7/0x3b5 > [ 2991.344562] [] ? rescuer_thread+0x332/0x332 > [ 2991.344562] [] kthread+0xb1/0xb9 > [ 2991.344562] [] ? __init_kthread_worker+0x58/0x58 > [ 2991.344562] [] ret_from_fork+0x7c/0xb0 > [ 2991.344562] [] ? __init_kthread_worker+0x58/0x58 > [ 2991.344562] bash D ffffffff81a4aa80 0 2618 2612 0x10000000 > [ 2991.344562] ffff8800379abb58 0000000000000002 0000000000000006 0000000000000c2c > [ 2991.344562] ffff880077fea140 ffff8800379abfd8 ffff8800379abfd8 00000000001d3c80 > [ 2991.344562] ffff8800779ca5c0 ffff880077fea140 ffffffff81541fcf 0000000000000000 > [ 2991.344562] Call Trace: > [ 2991.344562] [] ? __mutex_lock_common+0x3d4/0x609 > [ 2991.344562] [] schedule+0x64/0x66 > [ 2991.344562] [] schedule_preempt_disabled+0x18/0x24 > [ 2991.344562] [] __mutex_lock_common+0x3d4/0x609 > [ 2991.344562] [] ? rcu_cpu_notify+0x2f5/0x86e > [ 2991.344562] [] ? rcu_cpu_notify+0x2f5/0x86e > [ 2991.344562] [] mutex_lock_nested+0x3b/0x40 > [ 2991.344562] [] rcu_cpu_notify+0x2f5/0x86e > [ 2991.344562] [] ? __lock_is_held+0x32/0x53 > [ 2991.344562] [] notifier_call_chain+0x6b/0x98 > [ 2991.344562] [] __raw_notifier_call_chain+0xe/0x10 > [ 2991.344562] [] __cpu_notify+0x20/0x32 > [ 2991.344562] [] cpu_notify_nofail+0x17/0x36 > [ 2991.344562] [] _cpu_down+0x154/0x259 > [ 2991.344562] [] cpu_down+0x2d/0x3a > [ 2991.344562] [] store_online+0x4e/0xe7 > [ 2991.344562] [] dev_attr_store+0x20/0x22 > [ 2991.344562] [] sysfs_write_file+0x108/0x144 > [ 2991.344562] [] vfs_write+0xfd/0x158 > [ 2991.344562] [] SyS_write+0x5c/0x83 > [ 2991.344562] [] tracesys+0xdd/0xe2 > > As well as held locks: > > [ 3034.728033] Showing all locks held in the system: > [ 3034.728033] 1 lock held by rcu_preempt/10: > [ 3034.728033] #0: (rcu_preempt_state.onoff_mutex){+.+...}, at: [] rcu_gp_kthread+0x167/0x94b > [ 3034.728033] 4 locks held by kworker/0:1/47: > [ 3034.728033] #0: (events){.+.+.+}, at: [] process_one_work+0x207/0x4d1 > [ 3034.728033] #1: (cpuset_hotplug_work){+.+.+.}, at: [] process_one_work+0x207/0x4d1 > [ 3034.728033] #2: (cpuset_mutex){+.+.+.}, at: [] rebuild_sched_domains+0x17/0x2a > [ 3034.728033] #3: (cpu_hotplug.lock){+.+.+.}, at: [] get_online_cpus+0x3c/0x50 > [ 3034.728033] 1 lock held by mingetty/2563: > [ 3034.728033] #0: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x252/0x7e8 > [ 3034.728033] 1 lock held by mingetty/2565: > [ 3034.728033] #0: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x252/0x7e8 > [ 3034.728033] 1 lock held by mingetty/2569: > [ 3034.728033] #0: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x252/0x7e8 > [ 3034.728033] 1 lock held by mingetty/2572: > [ 3034.728033] #0: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x252/0x7e8 > [ 3034.728033] 1 lock held by mingetty/2575: > [ 3034.728033] #0: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x252/0x7e8 > [ 3034.728033] 7 locks held by bash/2618: > [ 3034.728033] #0: (sb_writers#5){.+.+.+}, at: [] file_start_write+0x2a/0x2c > [ 3034.728033] #1: (&buffer->mutex#2){+.+.+.}, at: [] sysfs_write_file+0x3c/0x144 > [ 3034.728033] #2: (s_active#54){.+.+.+}, at: [] sysfs_write_file+0xe7/0x144 > [ 3034.728033] #3: (x86_cpu_hotplug_driver_mutex){+.+.+.}, at: [] cpu_hotplug_driver_lock+0x17/0x19 > [ 3034.728033] #4: (cpu_add_remove_lock){+.+.+.}, at: [] cpu_maps_update_begin+0x17/0x19 > [ 3034.728033] #5: (cpu_hotplug.lock){+.+.+.}, at: [] cpu_hotplug_begin+0x2c/0x6d > [ 3034.728033] #6: (rcu_preempt_state.onoff_mutex){+.+...}, at: [] rcu_cpu_notify+0x2f5/0x86e > [ 3034.728033] 1 lock held by bash/2980: > [ 3034.728033] #0: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x252/0x7e8 > > Things looked a little weird. Also, this is a deadlock that lockdep did > not catch. But what we have here does not look like a circular lock > issue: > > Bash is blocked in rcu_cpu_notify(): > > 1961 /* Exclude any attempts to start a new grace period. */ > 1962 mutex_lock(&rsp->onoff_mutex); > > > kworker is blocked in get_online_cpus(), which makes sense as we are > currently taking down a CPU. > > But rcu_preempt is not blocked on anything. It is simply sleeping in > rcu_gp_kthread (really rcu_gp_init) here: > > 1453 #ifdef CONFIG_PROVE_RCU_DELAY > 1454 if ((prandom_u32() % (rcu_num_nodes * 8)) == 0 && > 1455 system_state == SYSTEM_RUNNING) > 1456 schedule_timeout_uninterruptible(2); > 1457 #endif /* #ifdef CONFIG_PROVE_RCU_DELAY */ > > And it does this while holding the onoff_mutex that bash is waiting for. > > Doing a function trace, it showed me where it happened: > > [ 125.940066] rcu_pree-10 3.... 28384115273: schedule_timeout_uninterruptible <-rcu_gp_kthread > [...] > [ 125.940066] rcu_pree-10 3d..3 28384202439: sched_switch: prev_comm=rcu_preempt prev_pid=10 prev_prio=120 prev_state=D ==> next_comm=watchdog/3 next_pid=38 next_prio=120 > > The watchdog ran, and then: > > [ 125.940066] watchdog-38 3d..3 28384692863: sched_switch: prev_comm=watchdog/3 prev_pid=38 prev_prio=120 prev_state=P ==> next_comm=modprobe next_pid=2848 next_prio=118 > > Not sure what modprobe was doing, but shortly after that: > > [ 125.940066] modprobe-2848 3d..3 28385041749: sched_switch: prev_comm=modprobe prev_pid=2848 prev_prio=118 prev_state=R+ ==> next_comm=migration/3 next_pid=40 next_prio=0 > > Where the migration thread took down the CPU: > > [ 125.940066] migratio-40 3d..3 28389148276: sched_switch: prev_comm=migration/3 prev_pid=40 prev_prio=0 prev_state=P ==> next_comm=swapper/3 next_pid=0 next_prio=120 > > which finally did: > > [ 125.940066] -0 3...1 28389282142: arch_cpu_idle_dead <-cpu_startup_entry > [ 125.940066] -0 3...1 28389282548: native_play_dead <-arch_cpu_idle_dead > [ 125.940066] -0 3...1 28389282924: play_dead_common <-native_play_dead > [ 125.940066] -0 3...1 28389283468: idle_task_exit <-play_dead_common > [ 125.940066] -0 3...1 28389284644: amd_e400_remove_cpu <-play_dead_common > > > CPU 3 is now offline, the rcu_preempt thread that ran on CPU 3 is still > doing a schedule_timeout_uninterruptible() and it registered it's > timeout to the timer base for CPU 3. You would think that it would get > migrated right? The issue here is that the timer migration happens at > the CPU notifier for CPU_DEAD. The problem is that the rcu notifier for > CPU_DOWN is blocked waiting for the onoff_mutex to be released, which is > held by the thread that just put itself into a uninterruptible sleep, > that wont wake up until the CPU_DEAD notifier of the timer > infrastructure is called, which wont happen until the rcu notifier > finishes. Here's our deadlock! This commit breaks this deadlock cycle by substituting a shorter udelay() for the previous schedule_timeout_uninterruptible(), while at the same time increasing the probability of the delay. This maintains the intensity of the testing. Reported-by: Steven Rostedt Signed-off-by: Paul E. McKenney Tested-by: Steven Rostedt diff --git a/kernel/rcutree.c b/kernel/rcutree.c index b61d20c..3538001 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1451,9 +1451,9 @@ static int rcu_gp_init(struct rcu_state *rsp) rnp->grphi, rnp->qsmask); raw_spin_unlock_irq(&rnp->lock); #ifdef CONFIG_PROVE_RCU_DELAY - if ((prandom_u32() % (rcu_num_nodes * 8)) == 0 && + if ((prandom_u32() % (rcu_num_nodes + 1)) == 0 && system_state == SYSTEM_RUNNING) - schedule_timeout_uninterruptible(2); + udelay(200); #endif /* #ifdef CONFIG_PROVE_RCU_DELAY */ cond_resched(); } -- cgit v0.10.2 From f8b8404337de4e2466e2e1139ea68b1f8295974f Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Sat, 1 Jun 2013 16:06:20 -0400 Subject: Modify UEFI anti-bricking code This patch reworks the UEFI anti-bricking code, including an effective reversion of cc5a080c and 31ff2f20. It turns out that calling QueryVariableInfo() from boot services results in some firmware implementations jumping to physical addresses even after entering virtual mode, so until we have 1:1 mappings for UEFI runtime space this isn't going to work so well. Reverting these gets us back to the situation where we'd refuse to create variables on some systems because they classify deleted variables as "used" until the firmware triggers a garbage collection run, which they won't do until they reach a lower threshold. This results in it being impossible to install a bootloader, which is unhelpful. Feedback from Samsung indicates that the firmware doesn't need more than 5KB of storage space for its own purposes, so that seems like a reasonable threshold. However, there's still no guarantee that a platform will attempt garbage collection merely because it drops below this threshold. It seems that this is often only triggered if an attempt to write generates a genuine EFI_OUT_OF_RESOURCES error. We can force that by attempting to create a variable larger than the remaining space. This should fail, but if it somehow succeeds we can then immediately delete it. I've tested this on the UEFI machines I have available, but I don't have a Samsung and so can't verify that it avoids the bricking problem. Signed-off-by: Matthew Garrett Signed-off-by: Lee, Chun-Y [ dummy variable cleanup ] Cc: Signed-off-by: Matt Fleming diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index 35ee62f..c205035 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -251,51 +251,6 @@ static void find_bits(unsigned long mask, u8 *pos, u8 *size) *size = len; } -static efi_status_t setup_efi_vars(struct boot_params *params) -{ - struct setup_data *data; - struct efi_var_bootdata *efidata; - u64 store_size, remaining_size, var_size; - efi_status_t status; - - if (sys_table->runtime->hdr.revision < EFI_2_00_SYSTEM_TABLE_REVISION) - return EFI_UNSUPPORTED; - - data = (struct setup_data *)(unsigned long)params->hdr.setup_data; - - while (data && data->next) - data = (struct setup_data *)(unsigned long)data->next; - - status = efi_call_phys4((void *)sys_table->runtime->query_variable_info, - EFI_VARIABLE_NON_VOLATILE | - EFI_VARIABLE_BOOTSERVICE_ACCESS | - EFI_VARIABLE_RUNTIME_ACCESS, &store_size, - &remaining_size, &var_size); - - if (status != EFI_SUCCESS) - return status; - - status = efi_call_phys3(sys_table->boottime->allocate_pool, - EFI_LOADER_DATA, sizeof(*efidata), &efidata); - - if (status != EFI_SUCCESS) - return status; - - efidata->data.type = SETUP_EFI_VARS; - efidata->data.len = sizeof(struct efi_var_bootdata) - - sizeof(struct setup_data); - efidata->data.next = 0; - efidata->store_size = store_size; - efidata->remaining_size = remaining_size; - efidata->max_var_size = var_size; - - if (data) - data->next = (unsigned long)efidata; - else - params->hdr.setup_data = (unsigned long)efidata; - -} - static efi_status_t setup_efi_pci(struct boot_params *params) { efi_pci_io_protocol *pci; @@ -1202,8 +1157,6 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table, setup_graphics(boot_params); - setup_efi_vars(boot_params); - setup_efi_pci(boot_params); status = efi_call_phys3(sys_table->boottime->allocate_pool, diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 2fb5d58..60c89f3 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -102,13 +102,6 @@ extern void efi_call_phys_epilog(void); extern void efi_unmap_memmap(void); extern void efi_memory_uc(u64 addr, unsigned long size); -struct efi_var_bootdata { - struct setup_data data; - u64 store_size; - u64 remaining_size; - u64 max_var_size; -}; - #ifdef CONFIG_EFI static inline bool efi_is_native(void) diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index 0874424..c15ddaf 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -6,7 +6,6 @@ #define SETUP_E820_EXT 1 #define SETUP_DTB 2 #define SETUP_PCI 3 -#define SETUP_EFI_VARS 4 /* ram_size flags */ #define RAMDISK_IMAGE_START_MASK 0x07FF diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 82089d8..5ae2eb0 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -42,7 +42,6 @@ #include #include #include -#include #include #include @@ -54,12 +53,12 @@ #define EFI_DEBUG 1 -/* - * There's some additional metadata associated with each - * variable. Intel's reference implementation is 60 bytes - bump that - * to account for potential alignment constraints - */ -#define VAR_METADATA_SIZE 64 +#define EFI_MIN_RESERVE 5120 + +#define EFI_DUMMY_GUID \ + EFI_GUID(0x4424ac57, 0xbe4b, 0x47dd, 0x9e, 0x97, 0xed, 0x50, 0xf0, 0x9f, 0x92, 0xa9) + +static efi_char16_t efi_dummy_name[6] = { 'D', 'U', 'M', 'M', 'Y', 0 }; struct efi __read_mostly efi = { .mps = EFI_INVALID_TABLE_ADDR, @@ -79,13 +78,6 @@ struct efi_memory_map memmap; static struct efi efi_phys __initdata; static efi_system_table_t efi_systab __initdata; -static u64 efi_var_store_size; -static u64 efi_var_remaining_size; -static u64 efi_var_max_var_size; -static u64 boot_used_size; -static u64 boot_var_size; -static u64 active_size; - unsigned long x86_efi_facility; /* @@ -188,53 +180,8 @@ static efi_status_t virt_efi_get_next_variable(unsigned long *name_size, efi_char16_t *name, efi_guid_t *vendor) { - efi_status_t status; - static bool finished = false; - static u64 var_size; - - status = efi_call_virt3(get_next_variable, - name_size, name, vendor); - - if (status == EFI_NOT_FOUND) { - finished = true; - if (var_size < boot_used_size) { - boot_var_size = boot_used_size - var_size; - active_size += boot_var_size; - } else { - printk(KERN_WARNING FW_BUG "efi: Inconsistent initial sizes\n"); - } - } - - if (boot_used_size && !finished) { - unsigned long size = 0; - u32 attr; - efi_status_t s; - void *tmp; - - s = virt_efi_get_variable(name, vendor, &attr, &size, NULL); - - if (s != EFI_BUFFER_TOO_SMALL || !size) - return status; - - tmp = kmalloc(size, GFP_ATOMIC); - - if (!tmp) - return status; - - s = virt_efi_get_variable(name, vendor, &attr, &size, tmp); - - if (s == EFI_SUCCESS && (attr & EFI_VARIABLE_NON_VOLATILE)) { - var_size += size; - var_size += ucs2_strsize(name, 1024); - active_size += size; - active_size += VAR_METADATA_SIZE; - active_size += ucs2_strsize(name, 1024); - } - - kfree(tmp); - } - - return status; + return efi_call_virt3(get_next_variable, + name_size, name, vendor); } static efi_status_t virt_efi_set_variable(efi_char16_t *name, @@ -243,34 +190,9 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name, unsigned long data_size, void *data) { - efi_status_t status; - u32 orig_attr = 0; - unsigned long orig_size = 0; - - status = virt_efi_get_variable(name, vendor, &orig_attr, &orig_size, - NULL); - - if (status != EFI_BUFFER_TOO_SMALL) - orig_size = 0; - - status = efi_call_virt5(set_variable, - name, vendor, attr, - data_size, data); - - if (status == EFI_SUCCESS) { - if (orig_size) { - active_size -= orig_size; - active_size -= ucs2_strsize(name, 1024); - active_size -= VAR_METADATA_SIZE; - } - if (data_size) { - active_size += data_size; - active_size += ucs2_strsize(name, 1024); - active_size += VAR_METADATA_SIZE; - } - } - - return status; + return efi_call_virt5(set_variable, + name, vendor, attr, + data_size, data); } static efi_status_t virt_efi_query_variable_info(u32 attr, @@ -786,9 +708,6 @@ void __init efi_init(void) char vendor[100] = "unknown"; int i = 0; void *tmp; - struct setup_data *data; - struct efi_var_bootdata *efi_var_data; - u64 pa_data; #ifdef CONFIG_X86_32 if (boot_params.efi_info.efi_systab_hi || @@ -806,22 +725,6 @@ void __init efi_init(void) if (efi_systab_init(efi_phys.systab)) return; - pa_data = boot_params.hdr.setup_data; - while (pa_data) { - data = early_ioremap(pa_data, sizeof(*efi_var_data)); - if (data->type == SETUP_EFI_VARS) { - efi_var_data = (struct efi_var_bootdata *)data; - - efi_var_store_size = efi_var_data->store_size; - efi_var_remaining_size = efi_var_data->remaining_size; - efi_var_max_var_size = efi_var_data->max_var_size; - } - pa_data = data->next; - early_iounmap(data, sizeof(*efi_var_data)); - } - - boot_used_size = efi_var_store_size - efi_var_remaining_size; - set_bit(EFI_SYSTEM_TABLES, &x86_efi_facility); /* @@ -1085,6 +988,13 @@ void __init efi_enter_virtual_mode(void) runtime_code_page_mkexec(); kfree(new_memmap); + + /* clean DUMMY object */ + efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + 0, NULL); } /* @@ -1136,33 +1046,65 @@ efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) efi_status_t status; u64 storage_size, remaining_size, max_size; + if (!(attributes & EFI_VARIABLE_NON_VOLATILE)) + return 0; + status = efi.query_variable_info(attributes, &storage_size, &remaining_size, &max_size); if (status != EFI_SUCCESS) return status; - if (!max_size && remaining_size > size) - printk_once(KERN_ERR FW_BUG "Broken EFI implementation" - " is returning MaxVariableSize=0\n"); /* * Some firmware implementations refuse to boot if there's insufficient * space in the variable store. We account for that by refusing the * write if permitting it would reduce the available space to under - * 50%. However, some firmware won't reclaim variable space until - * after the used (not merely the actively used) space drops below - * a threshold. We can approximate that case with the value calculated - * above. If both the firmware and our calculations indicate that the - * available space would drop below 50%, refuse the write. + * 5KB. This figure was provided by Samsung, so should be safe. */ + if ((remaining_size - size < EFI_MIN_RESERVE) && + !efi_no_storage_paranoia) { + + /* + * Triggering garbage collection may require that the firmware + * generate a real EFI_OUT_OF_RESOURCES error. We can force + * that by attempting to use more space than is available. + */ + unsigned long dummy_size = remaining_size + 1024; + void *dummy = kmalloc(dummy_size, GFP_ATOMIC); + + status = efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + dummy_size, dummy); + + if (status == EFI_SUCCESS) { + /* + * This should have failed, so if it didn't make sure + * that we delete it... + */ + efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + 0, dummy); + } - if (!storage_size || size > remaining_size || - (max_size && size > max_size)) - return EFI_OUT_OF_RESOURCES; + /* + * The runtime code may now have triggered a garbage collection + * run, so check the variable info again + */ + status = efi.query_variable_info(attributes, &storage_size, + &remaining_size, &max_size); - if (!efi_no_storage_paranoia && - ((active_size + size + VAR_METADATA_SIZE > storage_size / 2) && - (remaining_size - size < storage_size / 2))) - return EFI_OUT_OF_RESOURCES; + if (status != EFI_SUCCESS) + return status; + + /* + * There still isn't enough room, so return an error + */ + if (remaining_size - size < EFI_MIN_RESERVE) + return EFI_OUT_OF_RESOURCES; + } return EFI_SUCCESS; } -- cgit v0.10.2 From 4364d5f96eed7994a2c625bd9216656e55fba0cb Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Wed, 5 Jun 2013 15:40:46 +0800 Subject: vhost_net: clear msg.control for non-zerocopy case during tx When we decide not use zero-copy, msg.control should be set to NULL otherwise macvtap/tap may set zerocopy callbacks which may decrease the kref of ubufs wrongly. Bug were introduced by commit cedb9bdce099206290a2bdd02ce47a7b253b6a84 (vhost-net: skip head management if no outstanding). This solves the following warnings: WARNING: at include/linux/kref.h:47 handle_tx+0x477/0x4b0 [vhost_net]() Modules linked in: vhost_net macvtap macvlan tun nfsd exportfs bridge stp llc openvswitch kvm_amd kvm bnx2 megaraid_sas [last unloaded: tun] CPU: 5 PID: 8670 Comm: vhost-8668 Not tainted 3.10.0-rc2+ #1566 Hardware name: Dell Inc. PowerEdge R715/00XHKG, BIOS 1.5.2 04/19/2011 ffffffffa0198323 ffff88007c9ebd08 ffffffff81796b73 ffff88007c9ebd48 ffffffff8103d66b 000000007b773e20 ffff8800779f0000 ffff8800779f43f0 ffff8800779f8418 000000000000015c 0000000000000062 ffff88007c9ebd58 Call Trace: [] dump_stack+0x19/0x1e [] warn_slowpath_common+0x6b/0xa0 [] warn_slowpath_null+0x15/0x20 [] handle_tx+0x477/0x4b0 [vhost_net] [] handle_tx_kick+0x10/0x20 [vhost_net] [] vhost_worker+0xfe/0x1a0 [vhost_net] [] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [] kthread+0xc6/0xd0 [] ? kthread_freezable_should_stop+0x70/0x70 [] ret_from_fork+0x7c/0xb0 [] ? kthread_freezable_should_stop+0x70/0x70 Signed-off-by: Jason Wang Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 2b51e23..b07d96b 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -436,7 +436,8 @@ static void handle_tx(struct vhost_net *net) kref_get(&ubufs->kref); } nvq->upend_idx = (nvq->upend_idx + 1) % UIO_MAXIOV; - } + } else + msg.msg_control = NULL; /* TODO: Check specific error and bomb out unless ENOBUFS? */ err = sock->ops->sendmsg(NULL, sock, &msg, len); if (unlikely(err < 0)) { -- cgit v0.10.2 From 92bb73ea2c434618a68a58a2f3a5c3fd0b660d18 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Wed, 5 Jun 2013 16:44:57 +0800 Subject: tuntap: fix a possible race between queue selection and changing queues Complier may generate codes that re-read the tun->numqueues during tun_select_queue(). This may be a race if vlan->numqueues were changed in the same time and can lead unexpected result (e.g. very huge value). We need prevent the compiler from generating such codes by adding an ACCESS_ONCE() to make sure tun->numqueues were only read once. Bug were introduced by commit c8d68e6be1c3b242f1c598595830890b65cea64a (tuntap: multiqueue support). Reported-by: Michael S. Tsirkin Cc: Michael S. Tsirkin Signed-off-by: Jason Wang Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 89776c5..b1cbfbc 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -352,7 +352,7 @@ static u16 tun_select_queue(struct net_device *dev, struct sk_buff *skb) u32 numqueues = 0; rcu_read_lock(); - numqueues = tun->numqueues; + numqueues = ACCESS_ONCE(tun->numqueues); txq = skb_get_rxhash(skb); if (txq) { -- cgit v0.10.2 From 39b72d89eb2bf74ec94773defece6890febba7a5 Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Fri, 17 May 2013 11:25:52 +0530 Subject: clk: exynos5250: Update cpufreq related clocks for EXYNOS5250 cpufreq driver for EXYNOS5250 is not a platform driver, hence we cannot currently pass the clock names through a device tree node. Instead, we need to make them available through a global alias. cpufreq driver for EXYNOS5250 requires four clocks - 'armclk', 'mout_cpu', 'mout_mpll' and 'mout_apll'. 'armclk' has already been defined with an alias, 'mout_cpu', 'mout_mpll' and 'mout_apll' are now defined with an alias. Signed-off-by: Tushar Behera Signed-off-by: Mike Turquette diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c index 5c97e75..05d099d 100644 --- a/drivers/clk/samsung/clk-exynos5250.c +++ b/drivers/clk/samsung/clk-exynos5250.c @@ -208,10 +208,10 @@ struct samsung_fixed_factor_clock exynos5250_fixed_factor_clks[] __initdata = { }; struct samsung_mux_clock exynos5250_mux_clks[] __initdata = { - MUX(none, "mout_apll", mout_apll_p, SRC_CPU, 0, 1), - MUX(none, "mout_cpu", mout_cpu_p, SRC_CPU, 16, 1), + MUX_A(none, "mout_apll", mout_apll_p, SRC_CPU, 0, 1, "mout_apll"), + MUX_A(none, "mout_cpu", mout_cpu_p, SRC_CPU, 16, 1, "mout_cpu"), MUX(none, "mout_mpll_fout", mout_mpll_fout_p, PLL_DIV2_SEL, 4, 1), - MUX(none, "sclk_mpll", mout_mpll_p, SRC_CORE1, 8, 1), + MUX_A(none, "sclk_mpll", mout_mpll_p, SRC_CORE1, 8, 1, "mout_mpll"), MUX(none, "mout_bpll_fout", mout_bpll_fout_p, PLL_DIV2_SEL, 0, 1), MUX(none, "sclk_bpll", mout_bpll_p, SRC_CDREX, 0, 1), MUX(none, "mout_vpllsrc", mout_vpllsrc_p, SRC_TOP2, 0, 1), -- cgit v0.10.2 From 589c603b2c591ed470a731ceda589e6d60b77b5f Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Fri, 17 May 2013 11:25:53 +0530 Subject: clk: exynos5250: Add sclk_mpll to the parent list of mout_cpu clock 'mout_mpll' is added the list of parent clocks for 'mout_cpu'. 'mout_mpll' is an alias to the clock 'sclk_mpll'. Hence 'sclk_mpll' should be added to the list of parent clocks. This results in an error when cpufreq driver for EXYNOS5250 tries to set 'mout_mpll' as a parent for 'mout_cpu'. clk_set_parent: clk sclk_mpll can not be parent of clk mout_cpu Signed-off-by: Tushar Behera Signed-off-by: Mike Turquette diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c index 05d099d..b6d79c0 100644 --- a/drivers/clk/samsung/clk-exynos5250.c +++ b/drivers/clk/samsung/clk-exynos5250.c @@ -155,7 +155,7 @@ static __initdata unsigned long exynos5250_clk_regs[] = { /* list of all parent clock list */ PNAME(mout_apll_p) = { "fin_pll", "fout_apll", }; -PNAME(mout_cpu_p) = { "mout_apll", "mout_mpll", }; +PNAME(mout_cpu_p) = { "mout_apll", "sclk_mpll", }; PNAME(mout_mpll_fout_p) = { "fout_mplldiv2", "fout_mpll" }; PNAME(mout_mpll_p) = { "fin_pll", "mout_mpll_fout" }; PNAME(mout_bpll_fout_p) = { "fout_bplldiv2", "fout_bpll" }; -- cgit v0.10.2 From ed82c437320c48a4032492f4a55a7e2c934158b6 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 11 Jun 2013 01:51:31 +0200 Subject: netfilter: xt_TCPOPTSTRIP: don't use tcp_hdr() In (bc6bcb5 netfilter: xt_TCPOPTSTRIP: fix possible mangling beyond packet boundary), the use of tcp_hdr was introduced. However, we cannot assume that skb->transport_header is set for non-local packets. Cc: Florian Westphal Reported-by: Phil Oester Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/xt_TCPOPTSTRIP.c b/net/netfilter/xt_TCPOPTSTRIP.c index 1eb1a44..b68fa19 100644 --- a/net/netfilter/xt_TCPOPTSTRIP.c +++ b/net/netfilter/xt_TCPOPTSTRIP.c @@ -48,11 +48,13 @@ tcpoptstrip_mangle_packet(struct sk_buff *skb, return NF_DROP; len = skb->len - tcphoff; - if (len < (int)sizeof(struct tcphdr) || - tcp_hdr(skb)->doff * 4 > len) + if (len < (int)sizeof(struct tcphdr)) return NF_DROP; tcph = (struct tcphdr *)(skb_network_header(skb) + tcphoff); + if (tcph->doff * 4 > len) + return NF_DROP; + opt = (u_int8_t *)tcph; /* -- cgit v0.10.2 From 34376a50fb1fa095b9d0636fa41ed2e73125f214 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Thu, 6 Jun 2013 14:29:49 -0700 Subject: Fix lockup related to stop_machine being stuck in __do_softirq. The stop machine logic can lock up if all but one of the migration threads make it through the disable-irq step and the one remaining thread gets stuck in __do_softirq. The reason __do_softirq can hang is that it has a bail-out based on jiffies timeout, but in the lockup case, jiffies itself is not incremented. To work around this, re-add the max_restart counter in __do_irq and stop processing irqs after 10 restarts. Thanks to Tejun Heo and Rusty Russell and others for helping me track this down. This was introduced in 3.9 by commit c10d73671ad3 ("softirq: reduce latencies"). It may be worth looking into ath9k to see if it has issues with its irq handler at a later date. The hang stack traces look something like this: ------------[ cut here ]------------ WARNING: at kernel/watchdog.c:245 watchdog_overflow_callback+0x9c/0xa7() Watchdog detected hard LOCKUP on cpu 2 Modules linked in: ath9k ath9k_common ath9k_hw ath mac80211 cfg80211 nfsv4 auth_rpcgss nfs fscache nf_nat_ipv4 nf_nat veth 8021q garp stp mrp llc pktgen lockd sunrpc] Pid: 23, comm: migration/2 Tainted: G C 3.9.4+ #11 Call Trace: warn_slowpath_common+0x85/0x9f warn_slowpath_fmt+0x46/0x48 watchdog_overflow_callback+0x9c/0xa7 __perf_event_overflow+0x137/0x1cb perf_event_overflow+0x14/0x16 intel_pmu_handle_irq+0x2dc/0x359 perf_event_nmi_handler+0x19/0x1b nmi_handle+0x7f/0xc2 do_nmi+0xbc/0x304 end_repeat_nmi+0x1e/0x2e <> cpu_stopper_thread+0xae/0x162 smpboot_thread_fn+0x258/0x260 kthread+0xc7/0xcf ret_from_fork+0x7c/0xb0 ---[ end trace 4947dfa9b0a4cec3 ]--- BUG: soft lockup - CPU#1 stuck for 22s! [migration/1:17] Modules linked in: ath9k ath9k_common ath9k_hw ath mac80211 cfg80211 nfsv4 auth_rpcgss nfs fscache nf_nat_ipv4 nf_nat veth 8021q garp stp mrp llc pktgen lockd sunrpc] irq event stamp: 835637905 hardirqs last enabled at (835637904): __do_softirq+0x9f/0x257 hardirqs last disabled at (835637905): apic_timer_interrupt+0x6d/0x80 softirqs last enabled at (5654720): __do_softirq+0x1ff/0x257 softirqs last disabled at (5654725): irq_exit+0x5f/0xbb CPU 1 Pid: 17, comm: migration/1 Tainted: G WC 3.9.4+ #11 To be filled by O.E.M. To be filled by O.E.M./To be filled by O.E.M. RIP: tasklet_hi_action+0xf0/0xf0 Process migration/1 Call Trace: __do_softirq+0x117/0x257 irq_exit+0x5f/0xbb smp_apic_timer_interrupt+0x8a/0x98 apic_timer_interrupt+0x72/0x80 printk+0x4d/0x4f stop_machine_cpu_stop+0x22c/0x274 cpu_stopper_thread+0xae/0x162 smpboot_thread_fn+0x258/0x260 kthread+0xc7/0xcf ret_from_fork+0x7c/0xb0 Signed-off-by: Ben Greear Acked-by: Tejun Heo Acked-by: Pekka Riikonen Cc: Eric Dumazet Cc: stable@kernel.org Signed-off-by: Linus Torvalds diff --git a/kernel/softirq.c b/kernel/softirq.c index b5197dc..3d6833f 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -195,8 +195,12 @@ void local_bh_enable_ip(unsigned long ip) EXPORT_SYMBOL(local_bh_enable_ip); /* - * We restart softirq processing for at most 2 ms, - * and if need_resched() is not set. + * We restart softirq processing for at most MAX_SOFTIRQ_RESTART times, + * but break the loop if need_resched() is set or after 2 ms. + * The MAX_SOFTIRQ_TIME provides a nice upper bound in most cases, but in + * certain cases, such as stop_machine(), jiffies may cease to + * increment and so we need the MAX_SOFTIRQ_RESTART limit as + * well to make sure we eventually return from this method. * * These limits have been established via experimentation. * The two things to balance is latency against fairness - @@ -204,6 +208,7 @@ EXPORT_SYMBOL(local_bh_enable_ip); * should not be able to lock up the box. */ #define MAX_SOFTIRQ_TIME msecs_to_jiffies(2) +#define MAX_SOFTIRQ_RESTART 10 asmlinkage void __do_softirq(void) { @@ -212,6 +217,7 @@ asmlinkage void __do_softirq(void) unsigned long end = jiffies + MAX_SOFTIRQ_TIME; int cpu; unsigned long old_flags = current->flags; + int max_restart = MAX_SOFTIRQ_RESTART; /* * Mask out PF_MEMALLOC s current task context is borrowed for the @@ -265,7 +271,8 @@ restart: pending = local_softirq_pending(); if (pending) { - if (time_before(jiffies, end) && !need_resched()) + if (time_before(jiffies, end) && !need_resched() && + --max_restart) goto restart; wakeup_softirqd(); -- cgit v0.10.2 From 150e5928d6063b273a80d9d6722417ac3c93ff82 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 10 Jun 2013 11:05:40 -0700 Subject: Input: add missing dependencies on CONFIG_HAS_IOMEM Several drivers don't build on s390 with CONFIG_PCI disabled as they require MMIO functions. Signed-off-by: Ben Hutchings Cc: stable@vger.kernel.org # 3.9 Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index ac05006..c62ca1b 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -431,6 +431,7 @@ config KEYBOARD_TEGRA config KEYBOARD_OPENCORES tristate "OpenCores Keyboard Controller" + depends on HAS_IOMEM help Say Y here if you want to use the OpenCores Keyboard Controller http://www.opencores.org/project,keyboardcontroller diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig index aebfe3e..1bda828 100644 --- a/drivers/input/serio/Kconfig +++ b/drivers/input/serio/Kconfig @@ -205,6 +205,7 @@ config SERIO_XILINX_XPS_PS2 config SERIO_ALTERA_PS2 tristate "Altera UP PS/2 controller" + depends on HAS_IOMEM help Say Y here if you have Altera University Program PS/2 ports. -- cgit v0.10.2 From ed13998c319b050fc9abdb73915859dfdbe1fb38 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Wed, 5 Jun 2013 15:30:55 +0200 Subject: sock_diag: fix filter code sent to userspace Filters need to be translated to real BPF code for userland, like SO_GETFILTER. Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller diff --git a/include/linux/filter.h b/include/linux/filter.h index c050dcc..f65f5a6 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -46,6 +46,7 @@ extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk); extern int sk_detach_filter(struct sock *sk); extern int sk_chk_filter(struct sock_filter *filter, unsigned int flen); extern int sk_get_filter(struct sock *sk, struct sock_filter __user *filter, unsigned len); +extern void sk_decode_filter(struct sock_filter *filt, struct sock_filter *to); #ifdef CONFIG_BPF_JIT #include diff --git a/net/core/filter.c b/net/core/filter.c index dad2a17..6438f29 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -778,7 +778,7 @@ int sk_detach_filter(struct sock *sk) } EXPORT_SYMBOL_GPL(sk_detach_filter); -static void sk_decode_filter(struct sock_filter *filt, struct sock_filter *to) +void sk_decode_filter(struct sock_filter *filt, struct sock_filter *to) { static const u16 decodes[] = { [BPF_S_ALU_ADD_K] = BPF_ALU|BPF_ADD|BPF_K, diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c index d5bef0b0..a0e9cf6 100644 --- a/net/core/sock_diag.c +++ b/net/core/sock_diag.c @@ -73,8 +73,13 @@ int sock_diag_put_filterinfo(struct user_namespace *user_ns, struct sock *sk, goto out; } - if (filter) - memcpy(nla_data(attr), filter->insns, len); + if (filter) { + struct sock_filter *fb = (struct sock_filter *)nla_data(attr); + int i; + + for (i = 0; i < filter->len; i++, fb++) + sk_decode_filter(&filter->insns[i], fb); + } out: rcu_read_unlock(); -- cgit v0.10.2 From 7e5955db458b2d349a8180242afebc78a13ed023 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 7 Jun 2013 11:17:07 +0800 Subject: ARM: prima2: fix incorrect panic usage In prima2, some functions of checking DT is registered in initcall level. If it doesn't match the compatible name of sirf, kernel will panic. It blocks the usage of multiplatform on other verndor. The error message is in below. Knic - not syncing: unable to find compatible pwrc node in dtb CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.0-rc3-00006-gd7f26ea-dirty #86 [] (unwind_backtrace+0x0/0xf8) from [] (show_stack+0x10/0x1) [] (show_stack+0x10/0x14) from [] (panic+0x90/0x1e8) [] (panic+0x90/0x1e8) from [] (sirfsoc_of_pwrc_init+0x24/0x) [] (sirfsoc_of_pwrc_init+0x24/0x58) from [] (do_one_initcal) [] (do_one_initcall+0x90/0x150) from [] (kernel_init_freeab) [] (kernel_init_freeable+0xfc/0x1c4) from [] (kernel_init+0) [] (kernel_init+0x8/0xe4) from [] (ret_from_fork+0x14/0x3c) Signen-off-by: Haojian Zhuang Signed-off-by: Olof Johansson diff --git a/arch/arm/mach-prima2/pm.c b/arch/arm/mach-prima2/pm.c index 9936c18..8f595c0 100644 --- a/arch/arm/mach-prima2/pm.c +++ b/arch/arm/mach-prima2/pm.c @@ -101,8 +101,10 @@ static int __init sirfsoc_of_pwrc_init(void) struct device_node *np; np = of_find_matching_node(NULL, pwrc_ids); - if (!np) - panic("unable to find compatible pwrc node in dtb\n"); + if (!np) { + pr_err("unable to find compatible sirf pwrc node in dtb\n"); + return -ENOENT; + } /* * pwrc behind rtciobrg is not located in memory space diff --git a/arch/arm/mach-prima2/rstc.c b/arch/arm/mach-prima2/rstc.c index 435019c..d5e0cbc 100644 --- a/arch/arm/mach-prima2/rstc.c +++ b/arch/arm/mach-prima2/rstc.c @@ -28,8 +28,10 @@ static int __init sirfsoc_of_rstc_init(void) struct device_node *np; np = of_find_matching_node(NULL, rstc_ids); - if (!np) - panic("unable to find compatible rstc node in dtb\n"); + if (!np) { + pr_err("unable to find compatible sirf rstc node in dtb\n"); + return -ENOENT; + } sirfsoc_rstc_base = of_iomap(np, 0); if (!sirfsoc_rstc_base) -- cgit v0.10.2 From 2a8fedd0c142d4328ab4667847e05afe17c3295c Mon Sep 17 00:00:00 2001 From: David Daney Date: Mon, 10 Jun 2013 12:33:47 -0700 Subject: kvm: Add definition of KVM_REG_MIPS We use 0x7000000000000000ULL as 0x6000000000000000ULL is reserved for ARM64. Signed-off-by: David Daney Signed-off-by: Gleb Natapov diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index a5c86fc..d88c8ee 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -783,6 +783,7 @@ struct kvm_dirty_tlb { #define KVM_REG_IA64 0x3000000000000000ULL #define KVM_REG_ARM 0x4000000000000000ULL #define KVM_REG_S390 0x5000000000000000ULL +#define KVM_REG_MIPS 0x7000000000000000ULL #define KVM_REG_SIZE_SHIFT 52 #define KVM_REG_SIZE_MASK 0x00f0000000000000ULL -- cgit v0.10.2 From 681865d48e867a4fb55ff0516e2aa1cee3e4f343 Mon Sep 17 00:00:00 2001 From: David Daney Date: Mon, 10 Jun 2013 12:33:48 -0700 Subject: mips/kvm: Use KVM_REG_MIPS and proper size indicators for *_ONE_REG The API requires that the GET_ONE_REG and SET_ONE_REG ioctls have this extra information encoded in the register identifiers. Signed-off-by: David Daney Signed-off-by: Gleb Natapov diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h index 3f424f5..f09ff5a 100644 --- a/arch/mips/include/uapi/asm/kvm.h +++ b/arch/mips/include/uapi/asm/kvm.h @@ -58,56 +58,53 @@ struct kvm_fpu { * bits[2..0] - Register 'sel' index. * bits[7..3] - Register 'rd' index. * bits[15..8] - Must be zero. - * bits[63..16] - 1 -> CP0 registers. + * bits[31..16] - 1 -> CP0 registers. + * bits[51..32] - Must be zero. + * bits[63..52] - As per linux/kvm.h * * Other sets registers may be added in the future. Each set would - * have its own identifier in bits[63..16]. - * - * The addr field of struct kvm_one_reg must point to an aligned - * 64-bit wide location. For registers that are narrower than - * 64-bits, the value is stored in the low order bits of the location, - * and sign extended to 64-bits. + * have its own identifier in bits[31..16]. * * The registers defined in struct kvm_regs are also accessible, the * id values for these are below. */ -#define KVM_REG_MIPS_R0 0 -#define KVM_REG_MIPS_R1 1 -#define KVM_REG_MIPS_R2 2 -#define KVM_REG_MIPS_R3 3 -#define KVM_REG_MIPS_R4 4 -#define KVM_REG_MIPS_R5 5 -#define KVM_REG_MIPS_R6 6 -#define KVM_REG_MIPS_R7 7 -#define KVM_REG_MIPS_R8 8 -#define KVM_REG_MIPS_R9 9 -#define KVM_REG_MIPS_R10 10 -#define KVM_REG_MIPS_R11 11 -#define KVM_REG_MIPS_R12 12 -#define KVM_REG_MIPS_R13 13 -#define KVM_REG_MIPS_R14 14 -#define KVM_REG_MIPS_R15 15 -#define KVM_REG_MIPS_R16 16 -#define KVM_REG_MIPS_R17 17 -#define KVM_REG_MIPS_R18 18 -#define KVM_REG_MIPS_R19 19 -#define KVM_REG_MIPS_R20 20 -#define KVM_REG_MIPS_R21 21 -#define KVM_REG_MIPS_R22 22 -#define KVM_REG_MIPS_R23 23 -#define KVM_REG_MIPS_R24 24 -#define KVM_REG_MIPS_R25 25 -#define KVM_REG_MIPS_R26 26 -#define KVM_REG_MIPS_R27 27 -#define KVM_REG_MIPS_R28 28 -#define KVM_REG_MIPS_R29 29 -#define KVM_REG_MIPS_R30 30 -#define KVM_REG_MIPS_R31 31 +#define KVM_REG_MIPS_R0 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 0) +#define KVM_REG_MIPS_R1 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 1) +#define KVM_REG_MIPS_R2 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 2) +#define KVM_REG_MIPS_R3 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 3) +#define KVM_REG_MIPS_R4 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 4) +#define KVM_REG_MIPS_R5 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 5) +#define KVM_REG_MIPS_R6 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 6) +#define KVM_REG_MIPS_R7 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 7) +#define KVM_REG_MIPS_R8 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 8) +#define KVM_REG_MIPS_R9 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 9) +#define KVM_REG_MIPS_R10 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 10) +#define KVM_REG_MIPS_R11 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 11) +#define KVM_REG_MIPS_R12 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 12) +#define KVM_REG_MIPS_R13 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 13) +#define KVM_REG_MIPS_R14 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 14) +#define KVM_REG_MIPS_R15 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 15) +#define KVM_REG_MIPS_R16 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 16) +#define KVM_REG_MIPS_R17 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 17) +#define KVM_REG_MIPS_R18 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 18) +#define KVM_REG_MIPS_R19 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 19) +#define KVM_REG_MIPS_R20 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 20) +#define KVM_REG_MIPS_R21 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 21) +#define KVM_REG_MIPS_R22 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 22) +#define KVM_REG_MIPS_R23 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 23) +#define KVM_REG_MIPS_R24 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 24) +#define KVM_REG_MIPS_R25 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 25) +#define KVM_REG_MIPS_R26 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 26) +#define KVM_REG_MIPS_R27 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 27) +#define KVM_REG_MIPS_R28 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 28) +#define KVM_REG_MIPS_R29 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 29) +#define KVM_REG_MIPS_R30 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 30) +#define KVM_REG_MIPS_R31 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 31) -#define KVM_REG_MIPS_HI 32 -#define KVM_REG_MIPS_LO 33 -#define KVM_REG_MIPS_PC 34 +#define KVM_REG_MIPS_HI (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 32) +#define KVM_REG_MIPS_LO (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 33) +#define KVM_REG_MIPS_PC (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 34) /* * KVM MIPS specific structures and definitions diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index d934b01..dd203e5 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -485,29 +485,35 @@ kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, return -ENOIOCTLCMD; } -#define KVM_REG_MIPS_CP0_INDEX (0x10000 + 8 * 0 + 0) -#define KVM_REG_MIPS_CP0_ENTRYLO0 (0x10000 + 8 * 2 + 0) -#define KVM_REG_MIPS_CP0_ENTRYLO1 (0x10000 + 8 * 3 + 0) -#define KVM_REG_MIPS_CP0_CONTEXT (0x10000 + 8 * 4 + 0) -#define KVM_REG_MIPS_CP0_USERLOCAL (0x10000 + 8 * 4 + 2) -#define KVM_REG_MIPS_CP0_PAGEMASK (0x10000 + 8 * 5 + 0) -#define KVM_REG_MIPS_CP0_PAGEGRAIN (0x10000 + 8 * 5 + 1) -#define KVM_REG_MIPS_CP0_WIRED (0x10000 + 8 * 6 + 0) -#define KVM_REG_MIPS_CP0_HWRENA (0x10000 + 8 * 7 + 0) -#define KVM_REG_MIPS_CP0_BADVADDR (0x10000 + 8 * 8 + 0) -#define KVM_REG_MIPS_CP0_COUNT (0x10000 + 8 * 9 + 0) -#define KVM_REG_MIPS_CP0_ENTRYHI (0x10000 + 8 * 10 + 0) -#define KVM_REG_MIPS_CP0_COMPARE (0x10000 + 8 * 11 + 0) -#define KVM_REG_MIPS_CP0_STATUS (0x10000 + 8 * 12 + 0) -#define KVM_REG_MIPS_CP0_CAUSE (0x10000 + 8 * 13 + 0) -#define KVM_REG_MIPS_CP0_EBASE (0x10000 + 8 * 15 + 1) -#define KVM_REG_MIPS_CP0_CONFIG (0x10000 + 8 * 16 + 0) -#define KVM_REG_MIPS_CP0_CONFIG1 (0x10000 + 8 * 16 + 1) -#define KVM_REG_MIPS_CP0_CONFIG2 (0x10000 + 8 * 16 + 2) -#define KVM_REG_MIPS_CP0_CONFIG3 (0x10000 + 8 * 16 + 3) -#define KVM_REG_MIPS_CP0_CONFIG7 (0x10000 + 8 * 16 + 7) -#define KVM_REG_MIPS_CP0_XCONTEXT (0x10000 + 8 * 20 + 0) -#define KVM_REG_MIPS_CP0_ERROREPC (0x10000 + 8 * 30 + 0) +#define MIPS_CP0_32(_R, _S) \ + (KVM_REG_MIPS | KVM_REG_SIZE_U32 | 0x10000 | (8 * (_R) + (_S))) + +#define MIPS_CP0_64(_R, _S) \ + (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 0x10000 | (8 * (_R) + (_S))) + +#define KVM_REG_MIPS_CP0_INDEX MIPS_CP0_32(0, 0) +#define KVM_REG_MIPS_CP0_ENTRYLO0 MIPS_CP0_64(2, 0) +#define KVM_REG_MIPS_CP0_ENTRYLO1 MIPS_CP0_64(3, 0) +#define KVM_REG_MIPS_CP0_CONTEXT MIPS_CP0_64(4, 0) +#define KVM_REG_MIPS_CP0_USERLOCAL MIPS_CP0_64(4, 2) +#define KVM_REG_MIPS_CP0_PAGEMASK MIPS_CP0_32(5, 0) +#define KVM_REG_MIPS_CP0_PAGEGRAIN MIPS_CP0_32(5, 1) +#define KVM_REG_MIPS_CP0_WIRED MIPS_CP0_32(6, 0) +#define KVM_REG_MIPS_CP0_HWRENA MIPS_CP0_32(7, 0) +#define KVM_REG_MIPS_CP0_BADVADDR MIPS_CP0_64(8, 0) +#define KVM_REG_MIPS_CP0_COUNT MIPS_CP0_32(9, 0) +#define KVM_REG_MIPS_CP0_ENTRYHI MIPS_CP0_64(10, 0) +#define KVM_REG_MIPS_CP0_COMPARE MIPS_CP0_32(11, 0) +#define KVM_REG_MIPS_CP0_STATUS MIPS_CP0_32(12, 0) +#define KVM_REG_MIPS_CP0_CAUSE MIPS_CP0_32(13, 0) +#define KVM_REG_MIPS_CP0_EBASE MIPS_CP0_64(15, 1) +#define KVM_REG_MIPS_CP0_CONFIG MIPS_CP0_32(16, 0) +#define KVM_REG_MIPS_CP0_CONFIG1 MIPS_CP0_32(16, 1) +#define KVM_REG_MIPS_CP0_CONFIG2 MIPS_CP0_32(16, 2) +#define KVM_REG_MIPS_CP0_CONFIG3 MIPS_CP0_32(16, 3) +#define KVM_REG_MIPS_CP0_CONFIG7 MIPS_CP0_32(16, 7) +#define KVM_REG_MIPS_CP0_XCONTEXT MIPS_CP0_64(20, 0) +#define KVM_REG_MIPS_CP0_ERROREPC MIPS_CP0_64(30, 0) static u64 kvm_mips_get_one_regs[] = { KVM_REG_MIPS_R0, @@ -567,8 +573,6 @@ static u64 kvm_mips_get_one_regs[] = { static int kvm_mips_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) { - u64 __user *uaddr = (u64 __user *)(long)reg->addr; - struct mips_coproc *cop0 = vcpu->arch.cop0; s64 v; @@ -631,18 +635,39 @@ static int kvm_mips_get_reg(struct kvm_vcpu *vcpu, default: return -EINVAL; } - return put_user(v, uaddr); + if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U64) { + u64 __user *uaddr64 = (u64 __user *)(long)reg->addr; + return put_user(v, uaddr64); + } else if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U32) { + u32 __user *uaddr32 = (u32 __user *)(long)reg->addr; + u32 v32 = (u32)v; + return put_user(v32, uaddr32); + } else { + return -EINVAL; + } } static int kvm_mips_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) { - u64 __user *uaddr = (u64 __user *)(long)reg->addr; struct mips_coproc *cop0 = vcpu->arch.cop0; u64 v; - if (get_user(v, uaddr) != 0) - return -EFAULT; + if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U64) { + u64 __user *uaddr64 = (u64 __user *)(long)reg->addr; + + if (get_user(v, uaddr64) != 0) + return -EFAULT; + } else if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U32) { + u32 __user *uaddr32 = (u32 __user *)(long)reg->addr; + s32 v32; + + if (get_user(v32, uaddr32) != 0) + return -EFAULT; + v = (s64)v32; + } else { + return -EINVAL; + } switch (reg->id) { case KVM_REG_MIPS_R0: -- cgit v0.10.2 From cd3fc1b9a34e535a8acbead7461475fbc43bdd49 Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Fri, 17 May 2013 18:24:29 +0200 Subject: ARM: SAMSUNG: pm: Adjust for pinctrl- and DT-enabled platforms This patch makes legacy code on suspend/resume path being executed conditionally, on non-DT platforms only, to fix suspend/resume of DT-enabled systems, for which the code is inappropriate. Signed-off-by: Tomasz Figa Signed-off-by: Kyungmin Park [olof: add #include ] Signed-off-by: Olof Johansson diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c index 53210ec..bd7124c 100644 --- a/arch/arm/plat-samsung/pm.c +++ b/arch/arm/plat-samsung/pm.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -261,7 +262,8 @@ static int s3c_pm_enter(suspend_state_t state) * require a full power-cycle) */ - if (!any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) && + if (!of_have_populated_dt() && + !any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) && !any_allowed(s3c_irqwake_eintmask, s3c_irqwake_eintallow)) { printk(KERN_ERR "%s: No wake-up sources!\n", __func__); printk(KERN_ERR "%s: Aborting sleep\n", __func__); @@ -270,8 +272,11 @@ static int s3c_pm_enter(suspend_state_t state) /* save all necessary core registers not covered by the drivers */ - samsung_pm_save_gpios(); - samsung_pm_saved_gpios(); + if (!of_have_populated_dt()) { + samsung_pm_save_gpios(); + samsung_pm_saved_gpios(); + } + s3c_pm_save_uarts(); s3c_pm_save_core(); @@ -310,8 +315,11 @@ static int s3c_pm_enter(suspend_state_t state) s3c_pm_restore_core(); s3c_pm_restore_uarts(); - samsung_pm_restore_gpios(); - s3c_pm_restored_gpios(); + + if (!of_have_populated_dt()) { + samsung_pm_restore_gpios(); + s3c_pm_restored_gpios(); + } s3c_pm_debug_init(); -- cgit v0.10.2 From 4edd1ae91baa63e120b414647c79a7aa5ca50ae7 Mon Sep 17 00:00:00 2001 From: Mihai Caraman Date: Thu, 6 Jun 2013 19:16:29 -0500 Subject: kvm/ppc/booke64: Fix AltiVec interrupt numbers and build breakage Interrupt numbers defined for Book3E follows IVORs definition. Align BOOKE_INTERRUPT_ALTIVEC_UNAVAIL and BOOKE_INTERRUPT_ALTIVEC_ASSIST to this rule which also fixes the build breakage. IVORs 32 and 33 are shared so reflect this in the interrupts naming. This fixes a build break for 64-bit booke KVM. Signed-off-by: Mihai Caraman Signed-off-by: Scott Wood Signed-off-by: Gleb Natapov diff --git a/arch/powerpc/include/asm/kvm_asm.h b/arch/powerpc/include/asm/kvm_asm.h index b9dd382..851bac7 100644 --- a/arch/powerpc/include/asm/kvm_asm.h +++ b/arch/powerpc/include/asm/kvm_asm.h @@ -54,8 +54,16 @@ #define BOOKE_INTERRUPT_DEBUG 15 /* E500 */ -#define BOOKE_INTERRUPT_SPE_UNAVAIL 32 -#define BOOKE_INTERRUPT_SPE_FP_DATA 33 +#define BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL 32 +#define BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST 33 +/* + * TODO: Unify 32-bit and 64-bit kernel exception handlers to use same defines + */ +#define BOOKE_INTERRUPT_SPE_UNAVAIL BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL +#define BOOKE_INTERRUPT_SPE_FP_DATA BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST +#define BOOKE_INTERRUPT_ALTIVEC_UNAVAIL BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL +#define BOOKE_INTERRUPT_ALTIVEC_ASSIST \ + BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST #define BOOKE_INTERRUPT_SPE_FP_ROUND 34 #define BOOKE_INTERRUPT_PERFORMANCE_MONITOR 35 #define BOOKE_INTERRUPT_DOORBELL 36 @@ -67,10 +75,6 @@ #define BOOKE_INTERRUPT_HV_SYSCALL 40 #define BOOKE_INTERRUPT_HV_PRIV 41 -/* altivec */ -#define BOOKE_INTERRUPT_ALTIVEC_UNAVAIL 42 -#define BOOKE_INTERRUPT_ALTIVEC_ASSIST 43 - /* book3s */ #define BOOK3S_INTERRUPT_SYSTEM_RESET 0x100 -- cgit v0.10.2 From 2b6398fcf2831f52a8ad9f01c123b3ce2ea31277 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Thu, 6 Jun 2013 19:16:30 -0500 Subject: kvm/ppc/booke64: Disable e6500 support The previous patch made 64-bit booke KVM build again, but Altivec support is still not complete, and we can't prevent the guest from turning on Altivec (which can corrupt host state until state save/restore is implemented). Disable e6500 on KVM until this is fixed. Signed-off-by: Scott Wood Signed-off-by: Gleb Natapov diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c index 753cc99..19c8379 100644 --- a/arch/powerpc/kvm/e500mc.c +++ b/arch/powerpc/kvm/e500mc.c @@ -177,8 +177,6 @@ int kvmppc_core_check_processor_compat(void) r = 0; else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0) r = 0; - else if (strcmp(cur_cpu_spec->cpu_name, "e6500") == 0) - r = 0; else r = -ENOTSUPP; -- cgit v0.10.2 From f1e89028f020ca982bf51be6eaba0d462ba0f7fa Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Thu, 6 Jun 2013 19:16:31 -0500 Subject: kvm/ppc/booke: Hold srcu lock when calling gfn functions KVM core expects arch code to acquire the srcu lock when calling gfn_to_memslot and similar functions. Signed-off-by: Scott Wood Signed-off-by: Gleb Natapov diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c index 5dd3ab4..ed03854 100644 --- a/arch/powerpc/kvm/44x_tlb.c +++ b/arch/powerpc/kvm/44x_tlb.c @@ -441,6 +441,7 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws) struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu); struct kvmppc_44x_tlbe *tlbe; unsigned int gtlb_index; + int idx; gtlb_index = kvmppc_get_gpr(vcpu, ra); if (gtlb_index >= KVM44x_GUEST_TLB_SIZE) { @@ -473,6 +474,8 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws) return EMULATE_FAIL; } + idx = srcu_read_lock(&vcpu->kvm->srcu); + if (tlbe_is_host_safe(vcpu, tlbe)) { gva_t eaddr; gpa_t gpaddr; @@ -489,6 +492,8 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws) kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); + trace_kvm_gtlb_write(gtlb_index, tlbe->tid, tlbe->word0, tlbe->word1, tlbe->word2); diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 1020119..ecbe908 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -832,6 +832,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, { int r = RESUME_HOST; int s; + int idx; /* update before a new last_exit_type is rewritten */ kvmppc_update_timing_stats(vcpu); @@ -1053,6 +1054,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, break; } + idx = srcu_read_lock(&vcpu->kvm->srcu); + gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr); gfn = gpaddr >> PAGE_SHIFT; @@ -1075,6 +1078,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, kvmppc_account_exit(vcpu, MMIO_EXITS); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); break; } @@ -1098,6 +1102,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS); + idx = srcu_read_lock(&vcpu->kvm->srcu); + gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr); gfn = gpaddr >> PAGE_SHIFT; @@ -1114,6 +1120,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); break; } diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c index c41a5a9..6d6f153 100644 --- a/arch/powerpc/kvm/e500_mmu.c +++ b/arch/powerpc/kvm/e500_mmu.c @@ -396,6 +396,7 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) struct kvm_book3e_206_tlb_entry *gtlbe; int tlbsel, esel; int recal = 0; + int idx; tlbsel = get_tlb_tlbsel(vcpu); esel = get_tlb_esel(vcpu, tlbsel); @@ -430,6 +431,8 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) kvmppc_set_tlb1map_range(vcpu, gtlbe); } + idx = srcu_read_lock(&vcpu->kvm->srcu); + /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ if (tlbe_is_host_safe(vcpu, gtlbe)) { u64 eaddr = get_tlb_eaddr(gtlbe); @@ -444,6 +447,8 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) kvmppc_mmu_map(vcpu, eaddr, raddr, index_of(tlbsel, esel)); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); + kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS); return EMULATE_DONE; } -- cgit v0.10.2 From 7c11c0ccc7ba186433b2102cf3775ce6b2445453 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Thu, 6 Jun 2013 19:16:32 -0500 Subject: kvm/ppc/booke64: Fix lazy ee handling in kvmppc_handle_exit() EE is hard-disabled on entry to kvmppc_handle_exit(), so call hard_irq_disable() so that PACA_IRQ_HARD_DIS is set, and soft_enabled is unset. Without this, we get warnings such as arch/powerpc/kernel/time.c:300, and sometimes host kernel hangs. Signed-off-by: Scott Wood Signed-off-by: Gleb Natapov diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index ecbe908..5cd7ad0 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -834,6 +834,17 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, int s; int idx; +#ifdef CONFIG_PPC64 + WARN_ON(local_paca->irq_happened != 0); +#endif + + /* + * We enter with interrupts disabled in hardware, but + * we need to call hard_irq_disable anyway to ensure that + * the software state is kept in sync. + */ + hard_irq_disable(); + /* update before a new last_exit_type is rewritten */ kvmppc_update_timing_stats(vcpu); -- cgit v0.10.2 From 2786aae7fc935e44f81d5f359b6a768c81b46a9b Mon Sep 17 00:00:00 2001 From: Sebastian Siewior Date: Wed, 5 Jun 2013 18:54:00 +0200 Subject: net/ti davinci_mdio: don't hold a spin lock while calling pm_runtime was playing with suspend and run into this: |BUG: sleeping function called from invalid context at drivers/base/power/runtime.c:891 |in_atomic(): 1, irqs_disabled(): 0, pid: 1963, name: bash |6 locks held by bash/1963: |CPU: 0 PID: 1963 Comm: bash Not tainted 3.10.0-rc4+ #50 |[] (unwind_backtrace+0x0/0xf8) from [] (show_stack+0x10/0x14) |[] (show_stack+0x10/0x14) from [] (__pm_runtime_idle+0xa4/0xac) |[] (__pm_runtime_idle+0xa4/0xac) from [] (davinci_mdio_suspend+0x6c/0x9c) |[] (davinci_mdio_suspend+0x6c/0x9c) from [] (platform_pm_suspend+0x2c/0x54) |[] (platform_pm_suspend+0x2c/0x54) from [] (dpm_run_callback.isra.3+0x2c/0x64) |[] (dpm_run_callback.isra.3+0x2c/0x64) from [] (__device_suspend+0x100/0x22c) |[] (__device_suspend+0x100/0x22c) from [] (dpm_suspend+0x68/0x230) |[] (dpm_suspend+0x68/0x230) from [] (suspend_devices_and_enter+0x68/0x350) |[] (suspend_devices_and_enter+0x68/0x350) from [] (pm_suspend+0x210/0x24c) |[] (pm_suspend+0x210/0x24c) from [] (state_store+0x6c/0xbc) |[] (state_store+0x6c/0xbc) from [] (kobj_attr_store+0x14/0x20) |[] (kobj_attr_store+0x14/0x20) from [] (sysfs_write_file+0x16c/0x19c) |[] (sysfs_write_file+0x16c/0x19c) from [] (vfs_write+0xb4/0x190) |[] (vfs_write+0xb4/0x190) from [] (SyS_write+0x3c/0x70) |[] (SyS_write+0x3c/0x70) from [] (ret_fast_syscall+0x0/0x48) I don't see a reason why the pm_runtime call must be under the lock. Further I don't understand why this is a spinlock and not mutex. Cc: Mugunthan V N Signed-off-by: Sebastian Andrzej Siewior Acked-by: Mugunthan V N Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c index 12aec17..b2275d1 100644 --- a/drivers/net/ethernet/ti/davinci_mdio.c +++ b/drivers/net/ethernet/ti/davinci_mdio.c @@ -449,10 +449,9 @@ static int davinci_mdio_suspend(struct device *dev) __raw_writel(ctrl, &data->regs->control); wait_for_idle(data); - pm_runtime_put_sync(data->dev); - data->suspended = true; spin_unlock(&data->lock); + pm_runtime_put_sync(data->dev); return 0; } @@ -462,9 +461,9 @@ static int davinci_mdio_resume(struct device *dev) struct davinci_mdio_data *data = dev_get_drvdata(dev); u32 ctrl; - spin_lock(&data->lock); pm_runtime_get_sync(data->dev); + spin_lock(&data->lock); /* restart the scan state machine */ ctrl = __raw_readl(&data->regs->control); ctrl |= CONTROL_ENABLE; -- cgit v0.10.2 From 9f8c4265bda4a6e9aa97041d5cfd91386f460b65 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Wed, 5 Jun 2013 23:54:01 +0400 Subject: sh_eth: fix result of sh_eth_check_reset() on timeout When the first loop in sh_eth_check_reset() runs to its end, 'cnt' is 0, so the following check for 'cnt < 0' fails to catch the timeout. Fix the condition in this check, so that the timeout is actually reported. While at it, fix the grammar in the failure message... Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 42e9dd0..b4479b5 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -897,8 +897,8 @@ static int sh_eth_check_reset(struct net_device *ndev) mdelay(1); cnt--; } - if (cnt < 0) { - pr_err("Device reset fail\n"); + if (cnt <= 0) { + pr_err("Device reset failed\n"); ret = -ETIMEDOUT; } return ret; -- cgit v0.10.2 From c2020be3c35ab230b4ee046c262ddab3e0d3aab4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Thu, 6 Jun 2013 12:57:02 +0200 Subject: qmi_wwan/cdc_ether: let qmi_wwan handle the Huawei E1820 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Another QMI speaking Qualcomm based device, which should be driven by qmi_wwan, while cdc_ether should ignore it. Like on other Huawei devices, the wwan function can appear either as a single vendor specific interface or as a CDC ECM class function using separate control and data interfaces. The ECM control interface protocol is 0xff, likely in an attempt to indicate that vendor specific management is required. In addition to the near standard CDC class, Huawei also add vendor specific AT management commands to their firmwares. This is probably an attempt to support non-Windows systems using standard class drivers. Unfortunately, this part of the firmware is often buggy. Linux is much better off using whatever native vendor specific management protocol the device offers, and Windows uses, whenever possible. This means QMI in the case of Qualcomm based devices. The E1820 has been verified to work fine with QMI. Matching on interface number is necessary to distiguish the wwan function from serial functions in the single interface mode, as both function types will have class/subclass/function set to ff/ff/ff. The control interface number does not change in CDC ECM mode, so the interface number matching rule is sufficient to handle both modes. The cdc_ether blacklist entry is only relevant in CDC ECM mode, but using a similar interface number based rule helps document this as a transfer from one driver to another. Other Huawei 02/06/ff devices are left with the cdc_ether driver because we do not know whether they are based on Qualcomm chips. The Huawei specific AT command management is known to be somewhat hardware independent, and their usage of these class codes may also be independent of the modem hardware. Reported-by: Graham Inggs Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c index 078795f..04ee044 100644 --- a/drivers/net/usb/cdc_ether.c +++ b/drivers/net/usb/cdc_ether.c @@ -627,6 +627,12 @@ static const struct usb_device_id products [] = { .driver_info = 0, }, +/* Huawei E1820 - handled by qmi_wwan */ +{ + USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1), + .driver_info = 0, +}, + /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */ #if defined(CONFIG_USB_RTL8152) || defined(CONFIG_USB_RTL8152_MODULE) { diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 86adfa0..d095d0d 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -519,6 +519,7 @@ static const struct usb_device_id products[] = { /* 3. Combined interface devices matching on interface number */ {QMI_FIXED_INTF(0x0408, 0xea42, 4)}, /* Yota / Megafon M100-1 */ {QMI_FIXED_INTF(0x12d1, 0x140c, 1)}, /* Huawei E173 */ + {QMI_FIXED_INTF(0x12d1, 0x14ac, 1)}, /* Huawei E1820 */ {QMI_FIXED_INTF(0x19d2, 0x0002, 1)}, {QMI_FIXED_INTF(0x19d2, 0x0012, 1)}, {QMI_FIXED_INTF(0x19d2, 0x0017, 3)}, -- cgit v0.10.2 From 05c05351943cc03bf5c77e86953b24ae6fb21368 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 6 Jun 2013 15:20:39 +0300 Subject: vhost: check owner before we overwrite ubuf_info If device has an owner, we shouldn't touch ubuf_info since it might be in use. Signed-off-by: Michael S. Tsirkin Signed-off-by: David S. Miller diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index b07d96b..8cf5aec 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1054,6 +1054,10 @@ static long vhost_net_set_owner(struct vhost_net *n) int r; mutex_lock(&n->dev.mutex); + if (vhost_dev_has_owner(&n->dev)) { + r = -EBUSY; + goto out; + } r = vhost_net_set_ubuf_info(n); if (r) goto out; diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index beee7f5..60aa5ad 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -344,13 +344,19 @@ static int vhost_attach_cgroups(struct vhost_dev *dev) } /* Caller should have device mutex */ +bool vhost_dev_has_owner(struct vhost_dev *dev) +{ + return dev->mm; +} + +/* Caller should have device mutex */ long vhost_dev_set_owner(struct vhost_dev *dev) { struct task_struct *worker; int err; /* Is there an owner already? */ - if (dev->mm) { + if (vhost_dev_has_owner(dev)) { err = -EBUSY; goto err_mm; } diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index a7ad635..64adcf9 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -133,6 +133,7 @@ struct vhost_dev { long vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs); long vhost_dev_set_owner(struct vhost_dev *dev); +bool vhost_dev_has_owner(struct vhost_dev *dev); long vhost_dev_check_owner(struct vhost_dev *); struct vhost_memory *vhost_dev_reset_owner_prepare(void); void vhost_dev_reset_owner(struct vhost_dev *, struct vhost_memory *); -- cgit v0.10.2 From 288cfe78c8173f35c7a94f06859f60b3693d828a Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 6 Jun 2013 15:20:46 +0300 Subject: vhost: fix ubuf_info cleanup vhost_net_clear_ubuf_info didn't clear ubuf_info after kfree, this could trigger double free. Fix this and simplify this code to make it more robust: make sure ubuf info is always freed through vhost_net_clear_ubuf_info. Reported-by: Tommi Rantala Signed-off-by: Michael S. Tsirkin Signed-off-by: David S. Miller diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 8cf5aec..f80d3dd 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -155,14 +155,11 @@ static void vhost_net_ubuf_put_and_wait(struct vhost_net_ubuf_ref *ubufs) static void vhost_net_clear_ubuf_info(struct vhost_net *n) { - - bool zcopy; int i; - for (i = 0; i < n->dev.nvqs; ++i) { - zcopy = vhost_net_zcopy_mask & (0x1 << i); - if (zcopy) - kfree(n->vqs[i].ubuf_info); + for (i = 0; i < VHOST_NET_VQ_MAX; ++i) { + kfree(n->vqs[i].ubuf_info); + n->vqs[i].ubuf_info = NULL; } } @@ -171,7 +168,7 @@ int vhost_net_set_ubuf_info(struct vhost_net *n) bool zcopy; int i; - for (i = 0; i < n->dev.nvqs; ++i) { + for (i = 0; i < VHOST_NET_VQ_MAX; ++i) { zcopy = vhost_net_zcopy_mask & (0x1 << i); if (!zcopy) continue; @@ -183,12 +180,7 @@ int vhost_net_set_ubuf_info(struct vhost_net *n) return 0; err: - while (i--) { - zcopy = vhost_net_zcopy_mask & (0x1 << i); - if (!zcopy) - continue; - kfree(n->vqs[i].ubuf_info); - } + vhost_net_clear_ubuf_info(n); return -ENOMEM; } @@ -196,12 +188,12 @@ void vhost_net_vq_reset(struct vhost_net *n) { int i; + vhost_net_clear_ubuf_info(n); + for (i = 0; i < VHOST_NET_VQ_MAX; i++) { n->vqs[i].done_idx = 0; n->vqs[i].upend_idx = 0; n->vqs[i].ubufs = NULL; - kfree(n->vqs[i].ubuf_info); - n->vqs[i].ubuf_info = NULL; n->vqs[i].vhost_hlen = 0; n->vqs[i].sock_hlen = 0; } -- cgit v0.10.2 From 1abd165ed757db1afdefaac0a4bc8a70f97d258c Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Thu, 6 Jun 2013 15:53:47 +0200 Subject: net: sctp: fix NULL pointer dereference in socket destruction While stress testing sctp sockets, I hit the following panic: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 IP: [] sctp_endpoint_free+0xe/0x40 [sctp] PGD 7cead067 PUD 7ce76067 PMD 0 Oops: 0000 [#1] SMP Modules linked in: sctp(F) libcrc32c(F) [...] CPU: 7 PID: 2950 Comm: acc Tainted: GF 3.10.0-rc2+ #1 Hardware name: Dell Inc. PowerEdge T410/0H19HD, BIOS 1.6.3 02/01/2011 task: ffff88007ce0e0c0 ti: ffff88007b568000 task.ti: ffff88007b568000 RIP: 0010:[] [] sctp_endpoint_free+0xe/0x40 [sctp] RSP: 0018:ffff88007b569e08 EFLAGS: 00010292 RAX: 0000000000000000 RBX: ffff88007db78a00 RCX: dead000000200200 RDX: ffffffffa049fdb0 RSI: ffff8800379baf38 RDI: 0000000000000000 RBP: ffff88007b569e18 R08: ffff88007c230da0 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff880077990d00 R14: 0000000000000084 R15: ffff88007db78a00 FS: 00007fc18ab61700(0000) GS:ffff88007fc60000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000020 CR3: 000000007cf9d000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: ffff88007b569e38 ffff88007db78a00 ffff88007b569e38 ffffffffa049fded ffffffff81abf0c0 ffff88007db78a00 ffff88007b569e58 ffffffff8145b60e 0000000000000000 0000000000000000 ffff88007b569eb8 ffffffff814df36e Call Trace: [] sctp_destroy_sock+0x3d/0x80 [sctp] [] sk_common_release+0x1e/0xf0 [] inet_create+0x2ae/0x350 [] __sock_create+0x11f/0x240 [] sock_create+0x30/0x40 [] SyS_socket+0x4c/0xc0 [] ? do_page_fault+0xe/0x10 [] ? page_fault+0x22/0x30 [] system_call_fastpath+0x16/0x1b Code: 0c c9 c3 66 2e 0f 1f 84 00 00 00 00 00 e8 fb fe ff ff c9 c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 48 83 ec 08 66 66 66 66 90 <48> 8b 47 20 48 89 fb c6 47 1c 01 c6 40 12 07 e8 9e 68 01 00 48 RIP [] sctp_endpoint_free+0xe/0x40 [sctp] RSP CR2: 0000000000000020 ---[ end trace e0d71ec1108c1dd9 ]--- I did not hit this with the lksctp-tools functional tests, but with a small, multi-threaded test program, that heavily allocates, binds, listens and waits in accept on sctp sockets, and then randomly kills some of them (no need for an actual client in this case to hit this). Then, again, allocating, binding, etc, and then killing child processes. This panic then only occurs when ``echo 1 > /proc/sys/net/sctp/auth_enable'' is set. The cause for that is actually very simple: in sctp_endpoint_init() we enter the path of sctp_auth_init_hmacs(). There, we try to allocate our crypto transforms through crypto_alloc_hash(). In our scenario, it then can happen that crypto_alloc_hash() fails with -EINTR from crypto_larval_wait(), thus we bail out and release the socket via sk_common_release(), sctp_destroy_sock() and hit the NULL pointer dereference as soon as we try to access members in the endpoint during sctp_endpoint_free(), since endpoint at that time is still NULL. Now, if we have that case, we do not need to do any cleanup work and just leave the destruction handler. Signed-off-by: Daniel Borkmann Acked-by: Neil Horman Acked-by: Vlad Yasevich Signed-off-by: David S. Miller diff --git a/net/sctp/socket.c b/net/sctp/socket.c index f631c5f..6abb1ca 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4003,6 +4003,12 @@ SCTP_STATIC void sctp_destroy_sock(struct sock *sk) /* Release our hold on the endpoint. */ sp = sctp_sk(sk); + /* This could happen during socket init, thus we bail out + * early, since the rest of the below is not setup either. + */ + if (sp->ep == NULL) + return; + if (sp->do_auto_asconf) { sp->do_auto_asconf = 0; list_del(&sp->auto_asconf_list); -- cgit v0.10.2 From 7cdbac71f911494aa7d0343be23c092ca84a5ed4 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Tue, 11 Jun 2013 02:52:47 -0700 Subject: netlink: fix error propagation in netlink_mmap() Return the error if something went wrong instead of unconditionally returning 0. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index d0b3dd6..57ee84d 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -371,7 +371,7 @@ static int netlink_mmap(struct file *file, struct socket *sock, err = 0; out: mutex_unlock(&nlk->pg_vec_lock); - return 0; + return err; } static void netlink_frame_flush_dcache(const struct nl_mmap_hdr *hdr) -- cgit v0.10.2 From 071ff9a36cb08b5a2b099fcdb45b63a61618f928 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Tue, 11 Jun 2013 08:24:05 -0700 Subject: clk: samsung: Fix pll36xx_recalc_rate to handle kdiv properly The KDIV value is often listed as unsigned but it needs to be treated as a 16-bit signed value when using it in calculations. Fix our rate recalculation to do this correctly. Before doing this, I tried setting EPLL on exynos5250 to: rate, m, p, s, k = 80000000, 107, 2, 4, 43691 This rate is exactly from the table in the exynos5250 user manual. I read this back as 80750003 with: cat /sys/kernel/debug/clk/fin_pll/fout_epll/clk_rate After this patch, it reads back as 80000003 Signed-off-by: Doug Anderson Acked-by: Kukjin Kim Reviewed-by: Vikas Sajjan Signed-off-by: Mike Turquette diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c index 89135f6..362f12d 100644 --- a/drivers/clk/samsung/clk-pll.c +++ b/drivers/clk/samsung/clk-pll.c @@ -111,7 +111,8 @@ static unsigned long samsung_pll36xx_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { struct samsung_clk_pll36xx *pll = to_clk_pll36xx(hw); - u32 mdiv, pdiv, sdiv, kdiv, pll_con0, pll_con1; + u32 mdiv, pdiv, sdiv, pll_con0, pll_con1; + s16 kdiv; u64 fvco = parent_rate; pll_con0 = __raw_readl(pll->con_reg); @@ -119,7 +120,7 @@ static unsigned long samsung_pll36xx_recalc_rate(struct clk_hw *hw, mdiv = (pll_con0 >> PLL36XX_MDIV_SHIFT) & PLL36XX_MDIV_MASK; pdiv = (pll_con0 >> PLL36XX_PDIV_SHIFT) & PLL36XX_PDIV_MASK; sdiv = (pll_con0 >> PLL36XX_SDIV_SHIFT) & PLL36XX_SDIV_MASK; - kdiv = pll_con1 & PLL36XX_KDIV_MASK; + kdiv = (s16)(pll_con1 & PLL36XX_KDIV_MASK); fvco *= (mdiv << 16) + kdiv; do_div(fvco, (pdiv << sdiv)); -- cgit v0.10.2 From 58e8eedf18577c7eac722d5d1f190507ea263d1b Mon Sep 17 00:00:00 2001 From: Yoshihiro YUNOMAE Date: Tue, 23 Apr 2013 10:32:39 +0900 Subject: tracing: Fix outputting formats of x86-tsc and counter when use trace_clock Outputting formats of x86-tsc and counter should be a raw format, but after applying the patch(2b6080f28c7cc3efc8625ab71495aae89aeb63a0), the format was changed to nanosec. This is because the global variable trace_clock_id was used. When we use multiple buffers, clock_id of each sub-buffer should be used. Then, this patch uses tr->clock_id instead of the global variable trace_clock_id. [ Basically, this fixes a regression where the multibuffer code changed the trace_clock file to update tr->clock_id but the traces still use the old global trace_clock_id variable, negating the file's effect. The global trace_clock_id variable is obsolete and removed. - SR ] Link: http://lkml.kernel.org/r/20130423013239.22334.7394.stgit@yunodevel Signed-off-by: Yoshihiro YUNOMAE Signed-off-by: Steven Rostedt diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1a41023..e71a8be 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -652,8 +652,6 @@ static struct { ARCH_TRACE_CLOCKS }; -int trace_clock_id; - /* * trace_parser_get_init - gets the buffer for trace parser */ @@ -2826,7 +2824,7 @@ __tracing_open(struct inode *inode, struct file *file, bool snapshot) iter->iter_flags |= TRACE_FILE_ANNOTATE; /* Output in nanoseconds only if we are using a clock in nanoseconds. */ - if (trace_clocks[trace_clock_id].in_ns) + if (trace_clocks[tr->clock_id].in_ns) iter->iter_flags |= TRACE_FILE_TIME_IN_NS; /* stop the trace while dumping if we are not opening "snapshot" */ @@ -3825,7 +3823,7 @@ static int tracing_open_pipe(struct inode *inode, struct file *filp) iter->iter_flags |= TRACE_FILE_LAT_FMT; /* Output in nanoseconds only if we are using a clock in nanoseconds. */ - if (trace_clocks[trace_clock_id].in_ns) + if (trace_clocks[tr->clock_id].in_ns) iter->iter_flags |= TRACE_FILE_TIME_IN_NS; iter->cpu_file = tc->cpu; @@ -5095,7 +5093,7 @@ tracing_stats_read(struct file *filp, char __user *ubuf, cnt = ring_buffer_bytes_cpu(trace_buf->buffer, cpu); trace_seq_printf(s, "bytes: %ld\n", cnt); - if (trace_clocks[trace_clock_id].in_ns) { + if (trace_clocks[tr->clock_id].in_ns) { /* local or global for trace_clock */ t = ns2usecs(ring_buffer_oldest_event_ts(trace_buf->buffer, cpu)); usec_rem = do_div(t, USEC_PER_SEC); diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 711ca7d..20572ed 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -700,8 +700,6 @@ enum print_line_t print_trace_line(struct trace_iterator *iter); extern unsigned long trace_flags; -extern int trace_clock_id; - /* Standard output formatting function used for function return traces */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER -- cgit v0.10.2 From d7880812b3594d3c6dcbe3cfd71dabb17347d082 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 10 Jun 2013 16:52:03 +0200 Subject: idle: Add the stack canary init to cpu_startup_entry() Moving x86 to the generic idle implementation (commit 7d1a9417 "x86: Use generic idle loop") wreckaged the stack protector. I stupidly missed that boot_init_stack_canary() must be inlined from a function which never returns, but I put that call into arch_cpu_idle_prepare() which of course returns. I pondered to play tricks with arch_cpu_idle_prepare() first, but then I noticed, that the other archs which have implemented the stackprotector (ARM and SH) do not initialize the canary for the non-boot cpus. So I decided to move the boot_init_stack_canary() call into cpu_startup_entry() ifdeffed with an CONFIG_X86 for now. This #ifdef is just a temporary measure as I don't want to inflict the boot_init_stack_canary() call on ARM and SH that late in the cycle. I'll queue a patch for 3.11 which removes the #ifdef if the ARM/SH maintainers have no objection. Reported-by: Wouter van Kesteren Cc: x86@kernel.org Cc: Russell King Cc: Paul Mundt Signed-off-by: Thomas Gleixner diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 4e7a37f..81a5f5e 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -277,18 +277,6 @@ void exit_idle(void) } #endif -void arch_cpu_idle_prepare(void) -{ - /* - * If we're the non-boot CPU, nothing set the stack canary up - * for us. CPU0 already has it initialized but no harm in - * doing it again. This is a good place for updating it, as - * we wont ever return from this function (so the invalid - * canaries already on the stack wont ever trigger). - */ - boot_init_stack_canary(); -} - void arch_cpu_idle_enter(void) { local_touch_nmi(); diff --git a/kernel/cpu/idle.c b/kernel/cpu/idle.c index d5585f5..bf2ee1a 100644 --- a/kernel/cpu/idle.c +++ b/kernel/cpu/idle.c @@ -5,6 +5,7 @@ #include #include #include +#include #include @@ -112,6 +113,21 @@ static void cpu_idle_loop(void) void cpu_startup_entry(enum cpuhp_state state) { + /* + * This #ifdef needs to die, but it's too late in the cycle to + * make this generic (arm and sh have never invoked the canary + * init for the non boot cpus!). Will be fixed in 3.11 + */ +#ifdef CONFIG_X86 + /* + * If we're the non-boot CPU, nothing set the stack canary up + * for us. The boot CPU already has it initialized but no harm + * in doing it again. This is a good place for updating it, as + * we wont ever return from this function (so the invalid + * canaries already on the stack wont ever trigger). + */ + boot_init_stack_canary(); +#endif current_set_polling(); arch_cpu_idle_prepare(); cpu_idle_loop(); -- cgit v0.10.2 From 0b63cc3ce11822ac96a334a345640f524212cd6b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 4 Jun 2013 00:05:07 +0200 Subject: clk: spear: fix build error for spear3xx This patch is required to be able to disable spear320 support after the spear320_clk_init() prototype changed for the real function but not for the dummy. Signed-off-by: Arnd Bergmann Acked-by: Viresh Kumar Signed-off-by: Mike Turquette diff --git a/drivers/clk/spear/spear3xx_clock.c b/drivers/clk/spear/spear3xx_clock.c index f9ec43f..080c3c5 100644 --- a/drivers/clk/spear/spear3xx_clock.c +++ b/drivers/clk/spear/spear3xx_clock.c @@ -369,7 +369,7 @@ static void __init spear320_clk_init(void __iomem *soc_config_base) clk_register_clkdev(clk, NULL, "60100000.serial"); } #else -static inline void spear320_clk_init(void) { } +static inline void spear320_clk_init(void __iomem *soc_config_base) { } #endif void __init spear3xx_clk_init(void __iomem *misc_base, void __iomem *soc_config_base) -- cgit v0.10.2 From d343f4e8d6e4e4237b25b32e4f6a09d1281d4ca3 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Tue, 11 Jun 2013 13:41:47 +0300 Subject: usb: chipidea: fix no transceiver case Since usb phy code does return ERR_PTR() values, make sure that we don't end up dereferencing them. This is a problem, for example, on platforms that don't register a phy for chipidea since b7fa5c2a ("usb: phy: return -ENXIO when PHY layer isn't enabled"). Signed-off-by: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 519ead2..b501346 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1678,8 +1678,11 @@ static int udc_start(struct ci13xxx *ci) ci->gadget.ep0 = &ci->ep0in->ep; - if (ci->global_phy) + if (ci->global_phy) { ci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR(ci->transceiver)) + ci->transceiver = NULL; + } if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) { if (ci->transceiver == NULL) { @@ -1694,7 +1697,7 @@ static int udc_start(struct ci13xxx *ci) goto put_transceiver; } - if (!IS_ERR_OR_NULL(ci->transceiver)) { + if (ci->transceiver) { retval = otg_set_peripheral(ci->transceiver->otg, &ci->gadget); if (retval) @@ -1711,7 +1714,7 @@ static int udc_start(struct ci13xxx *ci) return retval; remove_trans: - if (!IS_ERR_OR_NULL(ci->transceiver)) { + if (ci->transceiver) { otg_set_peripheral(ci->transceiver->otg, NULL); if (ci->global_phy) usb_put_phy(ci->transceiver); @@ -1719,7 +1722,7 @@ remove_trans: dev_err(dev, "error = %i\n", retval); put_transceiver: - if (!IS_ERR_OR_NULL(ci->transceiver) && ci->global_phy) + if (ci->transceiver && ci->global_phy) usb_put_phy(ci->transceiver); destroy_eps: destroy_eps(ci); @@ -1747,7 +1750,7 @@ static void udc_stop(struct ci13xxx *ci) dma_pool_destroy(ci->td_pool); dma_pool_destroy(ci->qh_pool); - if (!IS_ERR_OR_NULL(ci->transceiver)) { + if (ci->transceiver) { otg_set_peripheral(ci->transceiver->otg, NULL); if (ci->global_phy) usb_put_phy(ci->transceiver); -- cgit v0.10.2 From 0c3f3dc68bb6e6950e8cd7851e7778c550e8dfb4 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Tue, 11 Jun 2013 13:41:48 +0300 Subject: usb: chipidea: fix id change handling Re-enable chipidea irq even if there's no role changing to do. This is a problem since b183c19f ("USB: chipidea: re-order irq handling to avoid unhandled irqs"); when it manifests, chipidea irq gets disabled for good. Cc: stable@vger.kernel.org # v3.7 Signed-off-by: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 49b098b..475c9c1 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -276,8 +276,9 @@ static void ci_role_work(struct work_struct *work) ci_role_stop(ci); ci_role_start(ci, role); - enable_irq(ci->irq); } + + enable_irq(ci->irq); } static irqreturn_t ci_irq(int irq, void *data) -- cgit v0.10.2 From 346f372f7b72a05bfa9b4e6d1b1e5de289a18d8a Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Thu, 6 Jun 2013 13:58:18 +0530 Subject: clk: exynos5250: Add CLK_IGNORE_UNUSED flag for pmu clock Currently 'pmu' clock is not handled by any of the drivers. Also before the introduction of CCF, this clock was not defined, hence was left enabled always. When this clock is disabled, software reset register becomes inaccessible and system reboot doesn't work. Upon restoring the default behaviour, system reboot starts working. Signed-off-by: Tushar Behera Signed-off-by: Mike Turquette diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c index b6d79c0..22d7699 100644 --- a/drivers/clk/samsung/clk-exynos5250.c +++ b/drivers/clk/samsung/clk-exynos5250.c @@ -378,7 +378,7 @@ struct samsung_gate_clock exynos5250_gate_clks[] __initdata = { GATE(hsi2c3, "hsi2c3", "aclk66", GATE_IP_PERIC, 31, 0, 0), GATE(chipid, "chipid", "aclk66", GATE_IP_PERIS, 0, 0, 0), GATE(sysreg, "sysreg", "aclk66", GATE_IP_PERIS, 1, 0, 0), - GATE(pmu, "pmu", "aclk66", GATE_IP_PERIS, 2, 0, 0), + GATE(pmu, "pmu", "aclk66", GATE_IP_PERIS, 2, CLK_IGNORE_UNUSED, 0), GATE(tzpc0, "tzpc0", "aclk66", GATE_IP_PERIS, 6, 0, 0), GATE(tzpc1, "tzpc1", "aclk66", GATE_IP_PERIS, 7, 0, 0), GATE(tzpc2, "tzpc2", "aclk66", GATE_IP_PERIS, 8, 0, 0), -- cgit v0.10.2 From 35d865afbbdf79e492f7d61df92b1a9e1d93d26f Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 28 May 2013 10:54:03 +0200 Subject: mac80211: work around broken APs not including HT info There are some APs, notably 2G/3G/4G Wifi routers, specifically the "Onda PN51T", "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile branded device [1] that erroneously don't include all the needed information in (re)association response frames. Work around this by assuming the information is the same as it was in the beacon or probe response and using the data from there instead. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=58881. [1] https://bbs.archlinux.org/viewtopic.php?pid=1277305 Note that this requires marking the first ieee802_11_parse_elems() argument const, otherwise we'd get a compiler warning. Cc: stable@vger.kernel.org Reported-and-tested-by: Michal Zajac Signed-off-by: Johannes Berg diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 44be28c..9ca8e32 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1497,10 +1497,11 @@ static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, ieee80211_tx_skb_tid(sdata, skb, 7); } -u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, bool action, +u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, struct ieee802_11_elems *elems, u64 filter, u32 crc); -static inline void ieee802_11_parse_elems(u8 *start, size_t len, bool action, +static inline void ieee802_11_parse_elems(const u8 *start, size_t len, + bool action, struct ieee802_11_elems *elems) { ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index a8c2130..741448b 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2522,8 +2522,11 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, u16 capab_info, aid; struct ieee802_11_elems elems; struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; + const struct cfg80211_bss_ies *bss_ies = NULL; + struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; u32 changed = 0; int err; + bool ret; /* AssocResp and ReassocResp have identical structure */ @@ -2555,21 +2558,86 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, ifmgd->aid = aid; /* + * Some APs are erroneously not including some information in their + * (re)association response frames. Try to recover by using the data + * from the beacon or probe response. This seems to afflict mobile + * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", + * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. + */ + if ((assoc_data->wmm && !elems.wmm_param) || + (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && + (!elems.ht_cap_elem || !elems.ht_operation)) || + (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && + (!elems.vht_cap_elem || !elems.vht_operation))) { + const struct cfg80211_bss_ies *ies; + struct ieee802_11_elems bss_elems; + + rcu_read_lock(); + ies = rcu_dereference(cbss->ies); + if (ies) + bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, + GFP_ATOMIC); + rcu_read_unlock(); + if (!bss_ies) + return false; + + ieee802_11_parse_elems(bss_ies->data, bss_ies->len, + false, &bss_elems); + if (assoc_data->wmm && + !elems.wmm_param && bss_elems.wmm_param) { + elems.wmm_param = bss_elems.wmm_param; + sdata_info(sdata, + "AP bug: WMM param missing from AssocResp\n"); + } + + /* + * Also check if we requested HT/VHT, otherwise the AP doesn't + * have to include the IEs in the (re)association response. + */ + if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && + !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { + elems.ht_cap_elem = bss_elems.ht_cap_elem; + sdata_info(sdata, + "AP bug: HT capability missing from AssocResp\n"); + } + if (!elems.ht_operation && bss_elems.ht_operation && + !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { + elems.ht_operation = bss_elems.ht_operation; + sdata_info(sdata, + "AP bug: HT operation missing from AssocResp\n"); + } + if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && + !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { + elems.vht_cap_elem = bss_elems.vht_cap_elem; + sdata_info(sdata, + "AP bug: VHT capa missing from AssocResp\n"); + } + if (!elems.vht_operation && bss_elems.vht_operation && + !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { + elems.vht_operation = bss_elems.vht_operation; + sdata_info(sdata, + "AP bug: VHT operation missing from AssocResp\n"); + } + } + + /* * We previously checked these in the beacon/probe response, so * they should be present here. This is just a safety net. */ if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { sdata_info(sdata, - "HT AP is missing WMM params or HT capability/operation in AssocResp\n"); - return false; + "HT AP is missing WMM params or HT capability/operation\n"); + ret = false; + goto out; } if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && (!elems.vht_cap_elem || !elems.vht_operation)) { sdata_info(sdata, - "VHT AP is missing VHT capability/operation in AssocResp\n"); - return false; + "VHT AP is missing VHT capability/operation\n"); + ret = false; + goto out; } mutex_lock(&sdata->local->sta_mtx); @@ -2580,7 +2648,8 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, sta = sta_info_get(sdata, cbss->bssid); if (WARN_ON(!sta)) { mutex_unlock(&sdata->local->sta_mtx); - return false; + ret = false; + goto out; } sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; @@ -2633,7 +2702,8 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, sta->sta.addr); WARN_ON(__sta_info_destroy(sta)); mutex_unlock(&sdata->local->sta_mtx); - return false; + ret = false; + goto out; } mutex_unlock(&sdata->local->sta_mtx); @@ -2673,7 +2743,10 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); ieee80211_sta_reset_beacon_monitor(sdata); - return true; + ret = true; + out: + kfree(bss_ies); + return ret; } static enum rx_mgmt_action __must_check diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 27e0715..72e6292 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -661,12 +661,12 @@ void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_queue_delayed_work); -u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, bool action, +u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, struct ieee802_11_elems *elems, u64 filter, u32 crc) { size_t left = len; - u8 *pos = start; + const u8 *pos = start; bool calc_crc = filter != 0; DECLARE_BITMAP(seen_elems, 256); const u8 *ie; -- cgit v0.10.2 From a6b368f6caec2c897a2ac98c5c359cab9c35dea5 Mon Sep 17 00:00:00 2001 From: Simon Wunderlich Date: Tue, 11 Jun 2013 10:44:39 +0200 Subject: mac80211: abort CAC in stop_ap() When a CAC is running and stop_ap is called (e.g. when hostapd is killed while performing CAC), the CAC must be aborted immediately. Otherwise ieee80211_stop_ap() will try to stop it when it's too late - wdev->channel is already NULL and the abort event can not be generated. Signed-off-by: Simon Wunderlich Signed-off-by: Johannes Berg diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 1a89c80..4fdb306e 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1057,6 +1057,12 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); + if (sdata->wdev.cac_started) { + cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); + cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, + GFP_KERNEL); + } + drv_stop_ap(sdata->local, sdata); /* free all potentially still buffered bcast frames */ -- cgit v0.10.2 From 795d855d56c6d172f50a974f603ba923ac93ee76 Mon Sep 17 00:00:00 2001 From: Simon Wunderlich Date: Tue, 11 Jun 2013 10:44:40 +0200 Subject: mac80211: Fix rate control mask matching call The order of parameters was mixed up, introduced in commit "mac80211: improve the rate control API" Cc: Felix Fietkau Signed-off-by: Simon Wunderlich Signed-off-by: Mathias Kretschmer Signed-off-by: Johannes Berg diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index d3f414f..a02bef3 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -615,7 +615,7 @@ static void rate_control_apply_mask(struct ieee80211_sub_if_data *sdata, if (rates[i].idx < 0) break; - rate_idx_match_mask(&rates[i], sband, mask, chan_width, + rate_idx_match_mask(&rates[i], sband, chan_width, mask, mcs_mask); } } -- cgit v0.10.2 From 19a6afb23e5d323e1245baa4e62755492b2f1200 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Sat, 8 Jun 2013 14:17:41 +0800 Subject: tuntap: set SOCK_ZEROCOPY flag during open Commit 54f968d6efdbf7dec36faa44fc11f01b0e4d1990 (tuntap: move socket to tun_file) forgets to set SOCK_ZEROCOPY flag, which will prevent vhost_net from doing zercopy w/ tap. This patch fixes this by setting it during file open. Cc: Michael S. Tsirkin Signed-off-by: Jason Wang Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller diff --git a/drivers/net/tun.c b/drivers/net/tun.c index b1cbfbc..bfa9bb4 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2159,6 +2159,8 @@ static int tun_chr_open(struct inode *inode, struct file * file) set_bit(SOCK_EXTERNALLY_ALLOCATED, &tfile->socket.flags); INIT_LIST_HEAD(&tfile->next); + sock_set_flag(&tfile->sk, SOCK_ZEROCOPY); + return 0; } -- cgit v0.10.2 From 76c455decbbad31de21c727edb184a963f42b40b Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 8 Jun 2013 15:00:53 +0200 Subject: team: check return value of team_get_port_by_index_rcu() for NULL team_get_port_by_index_rcu() might return NULL due to race between port removal and skb tx path. Panic is easily triggeable when txing packets and adding/removing port in a loop. introduced by commit 3d249d4ca "net: introduce ethernet teaming device" and commit 753f993911b "team: introduce random mode" (for random mode) Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/team/team_mode_random.c b/drivers/net/team/team_mode_random.c index 5ca14d4..7f032e2 100644 --- a/drivers/net/team/team_mode_random.c +++ b/drivers/net/team/team_mode_random.c @@ -28,6 +28,8 @@ static bool rnd_transmit(struct team *team, struct sk_buff *skb) port_index = random_N(team->en_port_count); port = team_get_port_by_index_rcu(team, port_index); + if (unlikely(!port)) + goto drop; port = team_get_first_port_txable_rcu(team, port); if (unlikely(!port)) goto drop; diff --git a/drivers/net/team/team_mode_roundrobin.c b/drivers/net/team/team_mode_roundrobin.c index d268e4d..472623f 100644 --- a/drivers/net/team/team_mode_roundrobin.c +++ b/drivers/net/team/team_mode_roundrobin.c @@ -32,6 +32,8 @@ static bool rr_transmit(struct team *team, struct sk_buff *skb) port_index = rr_priv(team)->sent_packets++ % team->en_port_count; port = team_get_port_by_index_rcu(team, port_index); + if (unlikely(!port)) + goto drop; port = team_get_first_port_txable_rcu(team, port); if (unlikely(!port)) goto drop; -- cgit v0.10.2 From 72df935d985c1575ed44ad2c8c653b28147993fa Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 8 Jun 2013 15:00:54 +0200 Subject: team: move add to port list before port enablement team_port_enable() adds port to port_hashlist. Reader sees port in team_get_port_by_index_rcu() and returns it, but team_get_first_port_txable_rcu() tries to go through port_list, where the port is not inserted yet -> NULL pointer dereference. Fix this by reordering port_list and port_hashlist insertion. Panic is easily triggeable when txing packets and adding/removing port in a loop. Introduced by commit 3d249d4c "net: introduce ethernet teaming device" Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index d016a76..b305105 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -1092,8 +1092,8 @@ static int team_port_add(struct team *team, struct net_device *port_dev) } port->index = -1; - team_port_enable(team, port); list_add_tail_rcu(&port->list, &team->port_list); + team_port_enable(team, port); __team_compute_features(team); __team_port_change_port_added(port, !!netif_carrier_ok(port_dev)); __team_options_change_check(team); -- cgit v0.10.2 From b79462a8b9f9a452edc20c64a70a89ba3b0a6a88 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 8 Jun 2013 15:00:55 +0200 Subject: team: fix checks in team_get_first_port_txable_rcu() should be checked if "cur" is txable, not "port". Introduced by commit 6e88e1357c "team: use function team_port_txable() for determing enabled and up port" Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/include/linux/if_team.h b/include/linux/if_team.h index 4474557..16fae64 100644 --- a/include/linux/if_team.h +++ b/include/linux/if_team.h @@ -249,12 +249,12 @@ team_get_first_port_txable_rcu(struct team *team, struct team_port *port) return port; cur = port; list_for_each_entry_continue_rcu(cur, &team->port_list, list) - if (team_port_txable(port)) + if (team_port_txable(cur)) return cur; list_for_each_entry_rcu(cur, &team->port_list, list) { if (cur == port) break; - if (team_port_txable(port)) + if (team_port_txable(cur)) return cur; } return NULL; -- cgit v0.10.2 From 70d19f805f8c047fc0a28dec9306b3773971c8d9 Mon Sep 17 00:00:00 2001 From: Phil Oester Date: Wed, 12 Jun 2013 10:44:51 +0200 Subject: netfilter: xt_TCPMSS: Fix IPv6 default MSS too As a followup to commit 409b545a ("netfilter: xt_TCPMSS: Fix violation of RFC879 in absence of MSS option"), John Heffner points out that IPv6 has a higher MTU than IPv4, and thus a higher minimum MSS. Update TCPMSS target to account for this, and update RFC comment. While at it, point to more recent reference RFC1122 instead of RFC879. Signed-off-by: Phil Oester Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c index afaebc7..6640a22 100644 --- a/net/netfilter/xt_TCPMSS.c +++ b/net/netfilter/xt_TCPMSS.c @@ -45,11 +45,12 @@ optlen(const u_int8_t *opt, unsigned int offset) static int tcpmss_mangle_packet(struct sk_buff *skb, - const struct xt_tcpmss_info *info, + const struct xt_action_param *par, unsigned int in_mtu, unsigned int tcphoff, unsigned int minlen) { + const struct xt_tcpmss_info *info = par->targinfo; struct tcphdr *tcph; unsigned int tcplen, i; __be16 oldval; @@ -125,11 +126,17 @@ tcpmss_mangle_packet(struct sk_buff *skb, skb_put(skb, TCPOLEN_MSS); - /* RFC 879 states that the default MSS is 536 without specific - * knowledge that the destination host is prepared to accept larger. - * Since no MSS was provided, we MUST NOT set a value > 536. + /* + * IPv4: RFC 1122 states "If an MSS option is not received at + * connection setup, TCP MUST assume a default send MSS of 536". + * IPv6: RFC 2460 states IPv6 has a minimum MTU of 1280 and a minimum + * length IPv6 header of 60, ergo the default MSS value is 1220 + * Since no MSS was provided, we must use the default values */ - newmss = min(newmss, (u16)536); + if (par->family == NFPROTO_IPV4) + newmss = min(newmss, (u16)536); + else + newmss = min(newmss, (u16)1220); opt = (u_int8_t *)tcph + sizeof(struct tcphdr); memmove(opt + TCPOLEN_MSS, opt, tcplen - sizeof(struct tcphdr)); @@ -188,7 +195,7 @@ tcpmss_tg4(struct sk_buff *skb, const struct xt_action_param *par) __be16 newlen; int ret; - ret = tcpmss_mangle_packet(skb, par->targinfo, + ret = tcpmss_mangle_packet(skb, par, tcpmss_reverse_mtu(skb, PF_INET), iph->ihl * 4, sizeof(*iph) + sizeof(struct tcphdr)); @@ -217,7 +224,7 @@ tcpmss_tg6(struct sk_buff *skb, const struct xt_action_param *par) tcphoff = ipv6_skip_exthdr(skb, sizeof(*ipv6h), &nexthdr, &frag_off); if (tcphoff < 0) return NF_DROP; - ret = tcpmss_mangle_packet(skb, par->targinfo, + ret = tcpmss_mangle_packet(skb, par, tcpmss_reverse_mtu(skb, PF_INET6), tcphoff, sizeof(*ipv6h) + sizeof(struct tcphdr)); -- cgit v0.10.2 From b396966c4688522863572927cb30aa874b3ec504 Mon Sep 17 00:00:00 2001 From: Phil Oester Date: Wed, 12 Jun 2013 10:58:20 +0200 Subject: netfilter: xt_TCPMSS: Fix missing fragmentation handling Similar to commit bc6bcb59 ("netfilter: xt_TCPOPTSTRIP: fix possible mangling beyond packet boundary"), add safe fragment handling to xt_TCPMSS. Signed-off-by: Phil Oester Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c index 6640a22..7011c71 100644 --- a/net/netfilter/xt_TCPMSS.c +++ b/net/netfilter/xt_TCPMSS.c @@ -57,6 +57,10 @@ tcpmss_mangle_packet(struct sk_buff *skb, u16 newmss; u8 *opt; + /* This is a fragment, no TCP header is available */ + if (par->fragoff != 0) + return XT_CONTINUE; + if (!skb_make_writable(skb, skb->len)) return -1; -- cgit v0.10.2 From 5939212df87e9377dd3813904264b94a962d19ca Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 29 May 2013 10:45:09 +0200 Subject: HID: multitouch: prevent memleak with the allocated name mt_free_input_name() was never called during .remove(): hid_hw_stop() removes the hid_input items in hdev->inputs, and so the list is therefore empty after the call. In the end, we never free the special names that has been allocated during .probe(). Restore the original name before freeing it to avoid acessing already freed pointer. This fixes a regression introduced by 49a5a827a ("HID: multitouch: append " Pen" to the name of the stylus input") Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index dc3ae5c..d39a5ce 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -264,9 +264,12 @@ static struct mt_class mt_classes[] = { static void mt_free_input_name(struct hid_input *hi) { struct hid_device *hdev = hi->report->device; + const char *name = hi->input->name; - if (hi->input->name != hdev->name) - kfree(hi->input->name); + if (name != hdev->name) { + hi->input->name = hdev->name; + kfree(name); + } } static ssize_t mt_show_quirks(struct device *dev, @@ -1040,11 +1043,11 @@ static void mt_remove(struct hid_device *hdev) struct hid_input *hi; sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); - hid_hw_stop(hdev); - list_for_each_entry(hi, &hdev->inputs, list) mt_free_input_name(hi); + hid_hw_stop(hdev); + kfree(td); hid_set_drvdata(hdev, NULL); } -- cgit v0.10.2 From 622ebe994f6866b8d46ee5d3bcc329ed65d3722d Mon Sep 17 00:00:00 2001 From: Moshe Benji Date: Mon, 3 Jun 2013 19:27:16 +0300 Subject: iwlwifi: fix rate control regression Since driver does not use control.rates[0].count, we have never set that variable. But currently, after rate control API rewrite, this is required by mac80211. Otherwise legacy rates control does not work and we transmit always at 1Mbit/s on pre 11n networks. [same fix as for iwlegacy, thanks Stanislaw!] Signed-off-by: Moshe Benji Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg diff --git a/drivers/net/wireless/iwlwifi/dvm/rs.c b/drivers/net/wireless/iwlwifi/dvm/rs.c index 907bd6e..10fbb17 100644 --- a/drivers/net/wireless/iwlwifi/dvm/rs.c +++ b/drivers/net/wireless/iwlwifi/dvm/rs.c @@ -2799,7 +2799,7 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta, void *priv_sta, info->control.rates[0].flags = 0; } info->control.rates[0].idx = rate_idx; - + info->control.rates[0].count = 1; } static void *rs_alloc_sta(void *priv_rate, struct ieee80211_sta *sta, diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c index 55334d5..b99fe31 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/iwlwifi/mvm/rs.c @@ -2546,6 +2546,7 @@ static void rs_get_rate(void *mvm_r, struct ieee80211_sta *sta, void *mvm_sta, info->control.rates[0].flags = 0; } info->control.rates[0].idx = rate_idx; + info->control.rates[0].count = 1; } static void *rs_alloc_sta(void *mvm_rate, struct ieee80211_sta *sta, -- cgit v0.10.2 From 3813f5ca9ab7a00e80a17aab34f155453c66c78a Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Thu, 6 Jun 2013 12:41:17 -0400 Subject: drm/radeon: do not try to uselessly update virtual memory pagetable If a buffer is never bound to a virtual memory pagetable than don't try to unbind it. Only drawback is that we don't update the pagetable when unbinding the ib pool buffer which is fine because it only happens at suspend or module unload/shutdown. Fixes spurious messages about buffers without VM mappings. E.g.: radeon 0000:01:00.0: bo ffff88020afac400 don't has a mapping in vm ffff88021ca2b900 Cc: stable@kernel.org Signed-off-by: Jerome Glisse Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index 2c1341f..43ec4a4 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -1197,11 +1197,13 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev, int radeon_vm_bo_rmv(struct radeon_device *rdev, struct radeon_bo_va *bo_va) { - int r; + int r = 0; mutex_lock(&rdev->vm_manager.lock); mutex_lock(&bo_va->vm->mutex); - r = radeon_vm_bo_update_pte(rdev, bo_va->vm, bo_va->bo, NULL); + if (bo_va->soffset) { + r = radeon_vm_bo_update_pte(rdev, bo_va->vm, bo_va->bo, NULL); + } mutex_unlock(&rdev->vm_manager.lock); list_del(&bo_va->vm_list); mutex_unlock(&bo_va->vm->mutex); -- cgit v0.10.2 From 089920f21db0108fb105ecfd81de4c92d88f06d0 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Thu, 6 Jun 2013 17:51:21 -0400 Subject: drm/radeon: fix write back suspend regression with uvd v2 UVD ring can't use scratch thus it does need writeback buffer to keep a valid address or radeon_ring_backup will trigger a kernel fault. It's ok to not unpin the write back buffer on suspend as it leave in gtt and thus does not need eviction. v2: Fix the uvd case. Reported and tracked by Wojtek Signed-off-by: Jerome Glisse Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 1899738..b0dc0b6 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -244,16 +244,6 @@ void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg) */ void radeon_wb_disable(struct radeon_device *rdev) { - int r; - - if (rdev->wb.wb_obj) { - r = radeon_bo_reserve(rdev->wb.wb_obj, false); - if (unlikely(r != 0)) - return; - radeon_bo_kunmap(rdev->wb.wb_obj); - radeon_bo_unpin(rdev->wb.wb_obj); - radeon_bo_unreserve(rdev->wb.wb_obj); - } rdev->wb.enabled = false; } @@ -269,6 +259,11 @@ void radeon_wb_fini(struct radeon_device *rdev) { radeon_wb_disable(rdev); if (rdev->wb.wb_obj) { + if (!radeon_bo_reserve(rdev->wb.wb_obj, false)) { + radeon_bo_kunmap(rdev->wb.wb_obj); + radeon_bo_unpin(rdev->wb.wb_obj); + radeon_bo_unreserve(rdev->wb.wb_obj); + } radeon_bo_unref(&rdev->wb.wb_obj); rdev->wb.wb = NULL; rdev->wb.wb_obj = NULL; @@ -295,26 +290,26 @@ int radeon_wb_init(struct radeon_device *rdev) dev_warn(rdev->dev, "(%d) create WB bo failed\n", r); return r; } - } - r = radeon_bo_reserve(rdev->wb.wb_obj, false); - if (unlikely(r != 0)) { - radeon_wb_fini(rdev); - return r; - } - r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT, - &rdev->wb.gpu_addr); - if (r) { + r = radeon_bo_reserve(rdev->wb.wb_obj, false); + if (unlikely(r != 0)) { + radeon_wb_fini(rdev); + return r; + } + r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT, + &rdev->wb.gpu_addr); + if (r) { + radeon_bo_unreserve(rdev->wb.wb_obj); + dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r); + radeon_wb_fini(rdev); + return r; + } + r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb); radeon_bo_unreserve(rdev->wb.wb_obj); - dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r); - radeon_wb_fini(rdev); - return r; - } - r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb); - radeon_bo_unreserve(rdev->wb.wb_obj); - if (r) { - dev_warn(rdev->dev, "(%d) map WB bo failed\n", r); - radeon_wb_fini(rdev); - return r; + if (r) { + dev_warn(rdev->dev, "(%d) map WB bo failed\n", r); + radeon_wb_fini(rdev); + return r; + } } /* clear wb memory */ diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c index 5b937df..ddb8f8e 100644 --- a/drivers/gpu/drm/radeon/radeon_fence.c +++ b/drivers/gpu/drm/radeon/radeon_fence.c @@ -63,7 +63,9 @@ static void radeon_fence_write(struct radeon_device *rdev, u32 seq, int ring) { struct radeon_fence_driver *drv = &rdev->fence_drv[ring]; if (likely(rdev->wb.enabled || !drv->scratch_reg)) { - *drv->cpu_addr = cpu_to_le32(seq); + if (drv->cpu_addr) { + *drv->cpu_addr = cpu_to_le32(seq); + } } else { WREG32(drv->scratch_reg, seq); } @@ -84,7 +86,11 @@ static u32 radeon_fence_read(struct radeon_device *rdev, int ring) u32 seq = 0; if (likely(rdev->wb.enabled || !drv->scratch_reg)) { - seq = le32_to_cpu(*drv->cpu_addr); + if (drv->cpu_addr) { + seq = le32_to_cpu(*drv->cpu_addr); + } else { + seq = lower_32_bits(atomic64_read(&drv->last_seq)); + } } else { seq = RREG32(drv->scratch_reg); } diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c index 906e5c0..9f55ade 100644 --- a/drivers/gpu/drm/radeon/radeon_uvd.c +++ b/drivers/gpu/drm/radeon/radeon_uvd.c @@ -159,7 +159,17 @@ int radeon_uvd_suspend(struct radeon_device *rdev) if (!r) { radeon_bo_kunmap(rdev->uvd.vcpu_bo); radeon_bo_unpin(rdev->uvd.vcpu_bo); + rdev->uvd.cpu_addr = NULL; + if (!radeon_bo_pin(rdev->uvd.vcpu_bo, RADEON_GEM_DOMAIN_CPU, NULL)) { + radeon_bo_kmap(rdev->uvd.vcpu_bo, &rdev->uvd.cpu_addr); + } radeon_bo_unreserve(rdev->uvd.vcpu_bo); + + if (rdev->uvd.cpu_addr) { + radeon_fence_driver_start_ring(rdev, R600_RING_TYPE_UVD_INDEX); + } else { + rdev->fence_drv[R600_RING_TYPE_UVD_INDEX].cpu_addr = NULL; + } } return r; } @@ -178,6 +188,10 @@ int radeon_uvd_resume(struct radeon_device *rdev) return r; } + /* Have been pin in cpu unmap unpin */ + radeon_bo_kunmap(rdev->uvd.vcpu_bo); + radeon_bo_unpin(rdev->uvd.vcpu_bo); + r = radeon_bo_pin(rdev->uvd.vcpu_bo, RADEON_GEM_DOMAIN_VRAM, &rdev->uvd.gpu_addr); if (r) { -- cgit v0.10.2 From 757aee0f7177b7c7528aa0c120fc131aca8bf641 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Wed, 24 Apr 2013 13:05:32 +0300 Subject: Bluetooth: Fix checks for LE support on LE-only controllers LE-only controllers do not support extended features so any kind of host feature bit checks do not make sense for them. This patch fixes code used for both single-mode (LE-only) and dual-mode (BR/EDR/LE) to use the HCI_LE_ENABLED flag instead of the "Host LE supported" feature bit for LE support tests. Signed-off-by: Johan Hedberg Acked-by: Marcel Holtmann Signed-off-by: Gustavo Padovan Signed-off-by: John W. Linville diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 35fef22..5e93b24 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -2700,7 +2700,7 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev, break; case DISCOV_TYPE_LE: - if (!lmp_host_le_capable(hdev)) { + if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY, MGMT_STATUS_NOT_SUPPORTED); mgmt_pending_remove(cmd); diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index b2296d3..b5562ab 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -770,7 +770,7 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level) BT_DBG("conn %p hcon %p level 0x%2.2x", conn, hcon, sec_level); - if (!lmp_host_le_capable(hcon->hdev)) + if (!test_bit(HCI_LE_ENABLED, &hcon->hdev->dev_flags)) return 1; if (sec_level == BT_SECURITY_LOW) @@ -851,7 +851,7 @@ int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb) __u8 reason; int err = 0; - if (!lmp_host_le_capable(conn->hcon->hdev)) { + if (!test_bit(HCI_LE_ENABLED, &conn->hcon->hdev->dev_flags)) { err = -ENOTSUPP; reason = SMP_PAIRING_NOTSUPP; goto done; -- cgit v0.10.2 From 22f2efed35e02a7c0b1ec73cfe790b1e3d207f4b Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Mon, 13 May 2013 18:15:32 -0700 Subject: Bluetooth: btmrvl: support Marvell Bluetooth device SD8897 The register offsets have been changed in SD8897 and newer chips. Define a new btmrvl_sdio_card_reg map for SD88xx. Signed-off-by: Bing Zhao Signed-off-by: Frank Huang Signed-off-by: Gustavo Padovan Signed-off-by: John W. Linville diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index fdfd61a..11a6104 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -201,7 +201,7 @@ config BT_MRVL The core driver to support Marvell Bluetooth devices. This driver is required if you want to support - Marvell Bluetooth devices, such as 8688/8787/8797. + Marvell Bluetooth devices, such as 8688/8787/8797/8897. Say Y here to compile Marvell Bluetooth driver into the kernel or say M to compile it as module. @@ -214,7 +214,7 @@ config BT_MRVL_SDIO The driver for Marvell Bluetooth chipsets with SDIO interface. This driver is required if you want to use Marvell Bluetooth - devices with SDIO interface. Currently SD8688/SD8787/SD8797 + devices with SDIO interface. Currently SD8688/SD8787/SD8797/SD8897 chipsets are supported. Say Y here to compile support for Marvell BT-over-SDIO driver diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c index c63488c..13693b7 100644 --- a/drivers/bluetooth/btmrvl_sdio.c +++ b/drivers/bluetooth/btmrvl_sdio.c @@ -82,6 +82,23 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = { .io_port_2 = 0x7a, }; +static const struct btmrvl_sdio_card_reg btmrvl_reg_88xx = { + .cfg = 0x00, + .host_int_mask = 0x02, + .host_intstatus = 0x03, + .card_status = 0x50, + .sq_read_base_addr_a0 = 0x60, + .sq_read_base_addr_a1 = 0x61, + .card_revision = 0xbc, + .card_fw_status0 = 0xc0, + .card_fw_status1 = 0xc1, + .card_rx_len = 0xc2, + .card_rx_unit = 0xc3, + .io_port_0 = 0xd8, + .io_port_1 = 0xd9, + .io_port_2 = 0xda, +}; + static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { .helper = "mrvl/sd8688_helper.bin", .firmware = "mrvl/sd8688.bin", @@ -103,6 +120,13 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { .sd_blksz_fw_dl = 256, }; +static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = { + .helper = NULL, + .firmware = "mrvl/sd8897_uapsta.bin", + .reg = &btmrvl_reg_88xx, + .sd_blksz_fw_dl = 256, +}; + static const struct sdio_device_id btmrvl_sdio_ids[] = { /* Marvell SD8688 Bluetooth device */ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), @@ -116,6 +140,9 @@ static const struct sdio_device_id btmrvl_sdio_ids[] = { /* Marvell SD8797 Bluetooth device */ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A), .driver_data = (unsigned long) &btmrvl_sdio_sd8797 }, + /* Marvell SD8897 Bluetooth device */ + { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E), + .driver_data = (unsigned long) &btmrvl_sdio_sd8897 }, { } /* Terminating entry */ }; @@ -1194,3 +1221,4 @@ MODULE_FIRMWARE("mrvl/sd8688_helper.bin"); MODULE_FIRMWARE("mrvl/sd8688.bin"); MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin"); MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin"); +MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin"); -- cgit v0.10.2 From cb3b3152b2f5939d67005cff841a1ca748b19888 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Tue, 28 May 2013 13:46:30 +0300 Subject: Bluetooth: Fix missing length checks for L2CAP signalling PDUs There has been code in place to check that the L2CAP length header matches the amount of data received, but many PDU handlers have not been checking that the data received actually matches that expected by the specific PDU. This patch adds passing the length header to the specific handler functions and ensures that those functions fail cleanly in the case of an incorrect amount of data. Signed-off-by: Johan Hedberg Cc: stable@vger.kernel.org Signed-off-by: Gustavo Padovan Signed-off-by: John W. Linville diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index a76d1ac..24bee07 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -3677,10 +3677,14 @@ static void l2cap_conf_rfc_get(struct l2cap_chan *chan, void *rsp, int len) } static inline int l2cap_command_rej(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, + u8 *data) { struct l2cap_cmd_rej_unk *rej = (struct l2cap_cmd_rej_unk *) data; + if (cmd_len < sizeof(*rej)) + return -EPROTO; + if (rej->reason != L2CAP_REJ_NOT_UNDERSTOOD) return 0; @@ -3829,11 +3833,14 @@ sendresp: } static int l2cap_connect_req(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, u8 *data) { struct hci_dev *hdev = conn->hcon->hdev; struct hci_conn *hcon = conn->hcon; + if (cmd_len < sizeof(struct l2cap_conn_req)) + return -EPROTO; + hci_dev_lock(hdev); if (test_bit(HCI_MGMT, &hdev->dev_flags) && !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &hcon->flags)) @@ -3847,7 +3854,8 @@ static int l2cap_connect_req(struct l2cap_conn *conn, } static int l2cap_connect_create_rsp(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, + u8 *data) { struct l2cap_conn_rsp *rsp = (struct l2cap_conn_rsp *) data; u16 scid, dcid, result, status; @@ -3855,6 +3863,9 @@ static int l2cap_connect_create_rsp(struct l2cap_conn *conn, u8 req[128]; int err; + if (cmd_len < sizeof(*rsp)) + return -EPROTO; + scid = __le16_to_cpu(rsp->scid); dcid = __le16_to_cpu(rsp->dcid); result = __le16_to_cpu(rsp->result); @@ -3952,6 +3963,9 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_chan *chan; int len, err = 0; + if (cmd_len < sizeof(*req)) + return -EPROTO; + dcid = __le16_to_cpu(req->dcid); flags = __le16_to_cpu(req->flags); @@ -3975,7 +3989,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, /* Reject if config buffer is too small. */ len = cmd_len - sizeof(*req); - if (len < 0 || chan->conf_len + len > sizeof(chan->conf_req)) { + if (chan->conf_len + len > sizeof(chan->conf_req)) { l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, l2cap_build_conf_rsp(chan, rsp, L2CAP_CONF_REJECT, flags), rsp); @@ -4053,14 +4067,18 @@ unlock: } static inline int l2cap_config_rsp(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, + u8 *data) { struct l2cap_conf_rsp *rsp = (struct l2cap_conf_rsp *)data; u16 scid, flags, result; struct l2cap_chan *chan; - int len = le16_to_cpu(cmd->len) - sizeof(*rsp); + int len = cmd_len - sizeof(*rsp); int err = 0; + if (cmd_len < sizeof(*rsp)) + return -EPROTO; + scid = __le16_to_cpu(rsp->scid); flags = __le16_to_cpu(rsp->flags); result = __le16_to_cpu(rsp->result); @@ -4161,7 +4179,8 @@ done: } static inline int l2cap_disconnect_req(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, + u8 *data) { struct l2cap_disconn_req *req = (struct l2cap_disconn_req *) data; struct l2cap_disconn_rsp rsp; @@ -4169,6 +4188,9 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_chan *chan; struct sock *sk; + if (cmd_len != sizeof(*req)) + return -EPROTO; + scid = __le16_to_cpu(req->scid); dcid = __le16_to_cpu(req->dcid); @@ -4208,12 +4230,16 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, } static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, + u8 *data) { struct l2cap_disconn_rsp *rsp = (struct l2cap_disconn_rsp *) data; u16 dcid, scid; struct l2cap_chan *chan; + if (cmd_len != sizeof(*rsp)) + return -EPROTO; + scid = __le16_to_cpu(rsp->scid); dcid = __le16_to_cpu(rsp->dcid); @@ -4243,11 +4269,15 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, } static inline int l2cap_information_req(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, + u8 *data) { struct l2cap_info_req *req = (struct l2cap_info_req *) data; u16 type; + if (cmd_len != sizeof(*req)) + return -EPROTO; + type = __le16_to_cpu(req->type); BT_DBG("type 0x%4.4x", type); @@ -4294,11 +4324,15 @@ static inline int l2cap_information_req(struct l2cap_conn *conn, } static inline int l2cap_information_rsp(struct l2cap_conn *conn, - struct l2cap_cmd_hdr *cmd, u8 *data) + struct l2cap_cmd_hdr *cmd, u16 cmd_len, + u8 *data) { struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data; u16 type, result; + if (cmd_len != sizeof(*rsp)) + return -EPROTO; + type = __le16_to_cpu(rsp->type); result = __le16_to_cpu(rsp->result); @@ -5164,16 +5198,16 @@ static inline int l2cap_bredr_sig_cmd(struct l2cap_conn *conn, switch (cmd->code) { case L2CAP_COMMAND_REJ: - l2cap_command_rej(conn, cmd, data); + l2cap_command_rej(conn, cmd, cmd_len, data); break; case L2CAP_CONN_REQ: - err = l2cap_connect_req(conn, cmd, data); + err = l2cap_connect_req(conn, cmd, cmd_len, data); break; case L2CAP_CONN_RSP: case L2CAP_CREATE_CHAN_RSP: - err = l2cap_connect_create_rsp(conn, cmd, data); + err = l2cap_connect_create_rsp(conn, cmd, cmd_len, data); break; case L2CAP_CONF_REQ: @@ -5181,15 +5215,15 @@ static inline int l2cap_bredr_sig_cmd(struct l2cap_conn *conn, break; case L2CAP_CONF_RSP: - err = l2cap_config_rsp(conn, cmd, data); + err = l2cap_config_rsp(conn, cmd, cmd_len, data); break; case L2CAP_DISCONN_REQ: - err = l2cap_disconnect_req(conn, cmd, data); + err = l2cap_disconnect_req(conn, cmd, cmd_len, data); break; case L2CAP_DISCONN_RSP: - err = l2cap_disconnect_rsp(conn, cmd, data); + err = l2cap_disconnect_rsp(conn, cmd, cmd_len, data); break; case L2CAP_ECHO_REQ: @@ -5200,11 +5234,11 @@ static inline int l2cap_bredr_sig_cmd(struct l2cap_conn *conn, break; case L2CAP_INFO_REQ: - err = l2cap_information_req(conn, cmd, data); + err = l2cap_information_req(conn, cmd, cmd_len, data); break; case L2CAP_INFO_RSP: - err = l2cap_information_rsp(conn, cmd, data); + err = l2cap_information_rsp(conn, cmd, cmd_len, data); break; case L2CAP_CREATE_CHAN_REQ: -- cgit v0.10.2 From 96570ffcca0b872dc8626e97569d2697f374d868 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Wed, 29 May 2013 09:51:29 +0300 Subject: Bluetooth: Fix mgmt handling of power on failures If hci_dev_open fails we need to ensure that the corresponding mgmt_set_powered command gets an appropriate response. This patch fixes the missing response by adding a new mgmt_set_powered_failed function that's used to indicate a power on failure to mgmt. Since a situation with the device being rfkilled may require special handling in user space the patch uses a new dedicated mgmt status code for this. Signed-off-by: Johan Hedberg Cc: stable@vger.kernel.org Acked-by: Marcel Holtmann Signed-off-by: Gustavo Padovan Signed-off-by: John W. Linville diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 35a57cd..7cb6d36 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1117,6 +1117,7 @@ void hci_sock_dev_event(struct hci_dev *hdev, int event); int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len); int mgmt_index_added(struct hci_dev *hdev); int mgmt_index_removed(struct hci_dev *hdev); +int mgmt_set_powered_failed(struct hci_dev *hdev, int err); int mgmt_powered(struct hci_dev *hdev, u8 powered); int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable); int mgmt_connectable(struct hci_dev *hdev, u8 connectable); diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h index 22980a7..9944c3e 100644 --- a/include/net/bluetooth/mgmt.h +++ b/include/net/bluetooth/mgmt.h @@ -42,6 +42,7 @@ #define MGMT_STATUS_NOT_POWERED 0x0f #define MGMT_STATUS_CANCELLED 0x10 #define MGMT_STATUS_INVALID_INDEX 0x11 +#define MGMT_STATUS_RFKILLED 0x12 struct mgmt_hdr { __le16 opcode; diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 33843c5..d817c93 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1555,11 +1555,15 @@ static const struct rfkill_ops hci_rfkill_ops = { static void hci_power_on(struct work_struct *work) { struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); + int err; BT_DBG("%s", hdev->name); - if (hci_dev_open(hdev->id) < 0) + err = hci_dev_open(hdev->id); + if (err < 0) { + mgmt_set_powered_failed(hdev, err); return; + } if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) queue_delayed_work(hdev->req_workqueue, &hdev->power_off, diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 5e93b24..f8ecbc7 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -3418,6 +3418,27 @@ new_settings: return err; } +int mgmt_set_powered_failed(struct hci_dev *hdev, int err) +{ + struct pending_cmd *cmd; + u8 status; + + cmd = mgmt_pending_find(MGMT_OP_SET_POWERED, hdev); + if (!cmd) + return -ENOENT; + + if (err == -ERFKILL) + status = MGMT_STATUS_RFKILLED; + else + status = MGMT_STATUS_FAILED; + + err = cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status); + + mgmt_pending_remove(cmd); + + return err; +} + int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable) { struct cmd_lookup match = { NULL, hdev }; -- cgit v0.10.2 From f873ded213d6d8c36354c0fc903af44da4fd6ac5 Mon Sep 17 00:00:00 2001 From: "Mark A. Greer" Date: Wed, 29 May 2013 12:25:34 -0700 Subject: mwifiex: debugfs: Fix out of bounds array access When reading the contents of '/sys/kernel/debug/mwifiex/p2p0/info', the following panic occurs: $ cat /sys/kernel/debug/mwifiex/p2p0/info Unable to handle kernel paging request at virtual address 74706164 pgd = de530000 [74706164] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: phy_twl4030_usb omap2430 musb_hdrc mwifiex_sdio mwifiex CPU: 0 PID: 1635 Comm: cat Not tainted 3.10.0-rc1-00010-g1268390 #1 task: de16b6c0 ti: de048000 task.ti: de048000 PC is at strnlen+0xc/0x4c LR is at string+0x3c/0xf8 pc : [] lr : [] psr: a0000013 sp : de049e10 ip : c06efba0 fp : de6d2092 r10: bf01a260 r9 : ffffffff r8 : 74706164 r7 : 0000ffff r6 : ffffffff r5 : de6d209c r4 : 00000000 r3 : ff0a0004 r2 : 74706164 r1 : ffffffff r0 : 74706164 Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c5387d Table: 9e530019 DAC: 00000015 Process cat (pid: 1635, stack limit = 0xde048240) Stack: (0xde049e10 to 0xde04a000) 9e00: de6d2092 00000002 bf01a25e de6d209c 9e20: de049e80 c02c438c 0000000a ff0a0004 ffffffff 00000000 00000000 de049e48 9e40: 00000000 2192df6d ff0a0004 ffffffff 00000000 de6d2092 de049ef8 bef3cc00 9e60: de6b0000 dc358000 de6d2000 00000000 00000003 c02c45a4 bf01790c bf01a254 9e80: 74706164 bf018698 00000000 de59c3c0 de048000 de049f80 00001000 bef3cc00 9ea0: 00000008 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9ec0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9ee0: 00000000 00000000 00000000 00000001 00000000 00000000 6669776d 20786569 9f00: 20302e31 2e343128 392e3636 3231702e 00202933 00000000 00000003 c0294898 9f20: 00000000 00000000 00000000 00000000 de59c3c0 c0107c04 de554000 de59c3c0 9f40: 00001000 bef3cc00 de049f80 bef3cc00 de049f80 00000000 00000003 c0108a00 9f60: de048000 de59c3c0 00000000 00000000 de59c3c0 00001000 bef3cc00 c0108b60 9f80: 00000000 00000000 00001000 bef3cc00 00000003 00000003 c0014128 de048000 9fa0: 00000000 c0013f80 00001000 bef3cc00 00000003 bef3cc00 00001000 00000000 9fc0: 00001000 bef3cc00 00000003 00000003 00000001 00000001 00000001 00000003 9fe0: 00000000 bef3cbdc 00011984 b6f1127c 60000010 00000003 18dbdd2c 7f7bfffd [] (strnlen+0xc/0x4c) from [] (string+0x3c/0xf8) [] (string+0x3c/0xf8) from [] (vsnprintf+0x1e8/0x3e8) [] (vsnprintf+0x1e8/0x3e8) from [] (sprintf+0x18/0x24) [] (sprintf+0x18/0x24) from [] (mwifiex_info_read+0xfc/0x3e8 [mwifiex]) [] (mwifiex_info_read+0xfc/0x3e8 [mwifiex]) from [] (vfs_read+0xb0/0x144) [] (vfs_read+0xb0/0x144) from [] (SyS_read+0x44/0x70) [] (SyS_read+0x44/0x70) from [] (ret_fast_syscall+0x0/0x30) Code: e12fff1e e3510000 e1a02000 0a00000d (e5d03000) ---[ end trace ca98273dc605a04f ]--- The panic is caused by the mwifiex_info_read() routine assuming that there can only be four modes (0-3) which is an invalid assumption. For example, when testing P2P, the mode is '8' (P2P_CLIENT) so the code accesses data beyond the bounds of the bss_modes[] array which causes the panic. Fix this by updating bss_modes[] to support the current list of modes and adding a check to prevent the out-of-bounds access from occuring in the future when more modes are added. Signed-off-by: Mark A. Greer Acked-by: Bing Zhao Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/mwifiex/debugfs.c b/drivers/net/wireless/mwifiex/debugfs.c index 753b568..a5f9875 100644 --- a/drivers/net/wireless/mwifiex/debugfs.c +++ b/drivers/net/wireless/mwifiex/debugfs.c @@ -26,10 +26,17 @@ static struct dentry *mwifiex_dfs_dir; static char *bss_modes[] = { - "Unknown", - "Ad-hoc", - "Managed", - "Auto" + "UNSPECIFIED", + "ADHOC", + "STATION", + "AP", + "AP_VLAN", + "WDS", + "MONITOR", + "MESH_POINT", + "P2P_CLIENT", + "P2P_GO", + "P2P_DEVICE", }; /* size/addr for mwifiex_debug_info */ @@ -200,7 +207,12 @@ mwifiex_info_read(struct file *file, char __user *ubuf, p += sprintf(p, "driver_version = %s", fmt); p += sprintf(p, "\nverext = %s", priv->version_str); p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name); - p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]); + + if (info.bss_mode >= ARRAY_SIZE(bss_modes)) + p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode); + else + p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]); + p += sprintf(p, "media_state=\"%s\"\n", (!priv->media_connected ? "Disconnected" : "Connected")); p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr); -- cgit v0.10.2 From 5b8df24e22e0b00b599cb9ae63dbb96e1959be30 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Thu, 30 May 2013 18:05:55 -0500 Subject: rtlwifi: rtl8192cu: Fix problem in connecting to WEP or WPA(1) networks Driver rtl8192cu can connect to WPA2 networks, but fails for any other encryption method. The cause is a failure to set the rate control data blocks. These changes fix https://bugzilla.redhat.com/show_bug.cgi?id=952793 and https://bugzilla.redhat.com/show_bug.cgi?id=761525. Signed-off-by: Larry Finger Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c index 3d0498e..189ba12 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c @@ -1973,26 +1973,35 @@ void rtl92cu_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val) } } -void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, - struct ieee80211_sta *sta, - u8 rssi_level) +static void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, + struct ieee80211_sta *sta) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_phy *rtlphy = &(rtlpriv->phy); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); - u32 ratr_value = (u32) mac->basic_rates; - u8 *mcsrate = mac->mcs; + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + u32 ratr_value; u8 ratr_index = 0; u8 nmode = mac->ht_enable; - u8 mimo_ps = 1; - u16 shortgi_rate = 0; - u32 tmp_ratr_value = 0; + u8 mimo_ps = IEEE80211_SMPS_OFF; + u16 shortgi_rate; + u32 tmp_ratr_value; u8 curtxbw_40mhz = mac->bw_40; - u8 curshortgi_40mhz = mac->sgi_40; - u8 curshortgi_20mhz = mac->sgi_20; + u8 curshortgi_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ? + 1 : 0; + u8 curshortgi_20mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ? + 1 : 0; enum wireless_mode wirelessmode = mac->mode; - ratr_value |= ((*(u16 *) (mcsrate))) << 12; + if (rtlhal->current_bandtype == BAND_ON_5G) + ratr_value = sta->supp_rates[1] << 4; + else + ratr_value = sta->supp_rates[0]; + if (mac->opmode == NL80211_IFTYPE_ADHOC) + ratr_value = 0xfff; + + ratr_value |= (sta->ht_cap.mcs.rx_mask[1] << 20 | + sta->ht_cap.mcs.rx_mask[0] << 12); switch (wirelessmode) { case WIRELESS_MODE_B: if (ratr_value & 0x0000000c) @@ -2006,7 +2015,7 @@ void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, case WIRELESS_MODE_N_24G: case WIRELESS_MODE_N_5G: nmode = 1; - if (mimo_ps == 0) { + if (mimo_ps == IEEE80211_SMPS_STATIC) { ratr_value &= 0x0007F005; } else { u32 ratr_mask; @@ -2016,8 +2025,7 @@ void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, ratr_mask = 0x000ff005; else ratr_mask = 0x0f0ff005; - if (curtxbw_40mhz) - ratr_mask |= 0x00000010; + ratr_value &= ratr_mask; } break; @@ -2026,41 +2034,74 @@ void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, ratr_value &= 0x000ff0ff; else ratr_value &= 0x0f0ff0ff; + break; } + ratr_value &= 0x0FFFFFFF; - if (nmode && ((curtxbw_40mhz && curshortgi_40mhz) || - (!curtxbw_40mhz && curshortgi_20mhz))) { + + if (nmode && ((curtxbw_40mhz && + curshortgi_40mhz) || (!curtxbw_40mhz && + curshortgi_20mhz))) { + ratr_value |= 0x10000000; tmp_ratr_value = (ratr_value >> 12); + for (shortgi_rate = 15; shortgi_rate > 0; shortgi_rate--) { if ((1 << shortgi_rate) & tmp_ratr_value) break; } + shortgi_rate = (shortgi_rate << 12) | (shortgi_rate << 8) | - (shortgi_rate << 4) | (shortgi_rate); + (shortgi_rate << 4) | (shortgi_rate); } + rtl_write_dword(rtlpriv, REG_ARFR0 + ratr_index * 4, ratr_value); + + RT_TRACE(rtlpriv, COMP_RATR, DBG_DMESG, "%x\n", + rtl_read_dword(rtlpriv, REG_ARFR0)); } -void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level) +static void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, + u8 rssi_level) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_phy *rtlphy = &(rtlpriv->phy); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); - u32 ratr_bitmap = (u32) mac->basic_rates; - u8 *p_mcsrate = mac->mcs; - u8 ratr_index = 0; - u8 curtxbw_40mhz = mac->bw_40; - u8 curshortgi_40mhz = mac->sgi_40; - u8 curshortgi_20mhz = mac->sgi_20; - enum wireless_mode wirelessmode = mac->mode; + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + struct rtl_sta_info *sta_entry = NULL; + u32 ratr_bitmap; + u8 ratr_index; + u8 curtxbw_40mhz = (sta->bandwidth >= IEEE80211_STA_RX_BW_40) ? 1 : 0; + u8 curshortgi_40mhz = curtxbw_40mhz && + (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ? + 1 : 0; + u8 curshortgi_20mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ? + 1 : 0; + enum wireless_mode wirelessmode = 0; bool shortgi = false; u8 rate_mask[5]; u8 macid = 0; - u8 mimops = 1; - - ratr_bitmap |= (p_mcsrate[1] << 20) | (p_mcsrate[0] << 12); + u8 mimo_ps = IEEE80211_SMPS_OFF; + + sta_entry = (struct rtl_sta_info *) sta->drv_priv; + wirelessmode = sta_entry->wireless_mode; + if (mac->opmode == NL80211_IFTYPE_STATION || + mac->opmode == NL80211_IFTYPE_MESH_POINT) + curtxbw_40mhz = mac->bw_40; + else if (mac->opmode == NL80211_IFTYPE_AP || + mac->opmode == NL80211_IFTYPE_ADHOC) + macid = sta->aid + 1; + + if (rtlhal->current_bandtype == BAND_ON_5G) + ratr_bitmap = sta->supp_rates[1] << 4; + else + ratr_bitmap = sta->supp_rates[0]; + if (mac->opmode == NL80211_IFTYPE_ADHOC) + ratr_bitmap = 0xfff; + ratr_bitmap |= (sta->ht_cap.mcs.rx_mask[1] << 20 | + sta->ht_cap.mcs.rx_mask[0] << 12); switch (wirelessmode) { case WIRELESS_MODE_B: ratr_index = RATR_INX_WIRELESS_B; @@ -2071,6 +2112,7 @@ void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level) break; case WIRELESS_MODE_G: ratr_index = RATR_INX_WIRELESS_GB; + if (rssi_level == 1) ratr_bitmap &= 0x00000f00; else if (rssi_level == 2) @@ -2085,7 +2127,8 @@ void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level) case WIRELESS_MODE_N_24G: case WIRELESS_MODE_N_5G: ratr_index = RATR_INX_WIRELESS_NGB; - if (mimops == 0) { + + if (mimo_ps == IEEE80211_SMPS_STATIC) { if (rssi_level == 1) ratr_bitmap &= 0x00070000; else if (rssi_level == 2) @@ -2128,8 +2171,10 @@ void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level) } } } + if ((curtxbw_40mhz && curshortgi_40mhz) || (!curtxbw_40mhz && curshortgi_20mhz)) { + if (macid == 0) shortgi = true; else if (macid == 1) @@ -2138,21 +2183,42 @@ void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level) break; default: ratr_index = RATR_INX_WIRELESS_NGB; + if (rtlphy->rf_type == RF_1T2R) ratr_bitmap &= 0x000ff0ff; else ratr_bitmap &= 0x0f0ff0ff; break; } - RT_TRACE(rtlpriv, COMP_RATR, DBG_DMESG, "ratr_bitmap :%x\n", - ratr_bitmap); - *(u32 *)&rate_mask = ((ratr_bitmap & 0x0fffffff) | - ratr_index << 28); + sta_entry->ratr_index = ratr_index; + + RT_TRACE(rtlpriv, COMP_RATR, DBG_DMESG, + "ratr_bitmap :%x\n", ratr_bitmap); + *(u32 *)&rate_mask = (ratr_bitmap & 0x0fffffff) | + (ratr_index << 28); rate_mask[4] = macid | (shortgi ? 0x20 : 0x00) | 0x80; RT_TRACE(rtlpriv, COMP_RATR, DBG_DMESG, "Rate_index:%x, ratr_val:%x, %5phC\n", ratr_index, ratr_bitmap, rate_mask); - rtl92c_fill_h2c_cmd(hw, H2C_RA_MASK, 5, rate_mask); + memcpy(rtlpriv->rate_mask, rate_mask, 5); + /* rtl92c_fill_h2c_cmd() does USB I/O and will result in a + * "scheduled while atomic" if called directly */ + schedule_work(&rtlpriv->works.fill_h2c_cmd); + + if (macid != 0) + sta_entry->ratr_index = ratr_index; +} + +void rtl92cu_update_hal_rate_tbl(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, + u8 rssi_level) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + + if (rtlpriv->dm.useramask) + rtl92cu_update_hal_rate_mask(hw, sta, rssi_level); + else + rtl92cu_update_hal_rate_table(hw, sta); } void rtl92cu_update_channel_access_setting(struct ieee80211_hw *hw) diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.h b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.h index f41a3aa..8e3ec1e 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.h +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.h @@ -98,10 +98,6 @@ void rtl92cu_update_interrupt_mask(struct ieee80211_hw *hw, u32 add_msr, u32 rm_msr); void rtl92cu_get_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val); void rtl92cu_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val); -void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, - struct ieee80211_sta *sta, - u8 rssi_level); -void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level); void rtl92cu_update_channel_access_setting(struct ieee80211_hw *hw); bool rtl92cu_gpio_radio_on_off_checking(struct ieee80211_hw *hw, u8 * valid); diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/mac.c b/drivers/net/wireless/rtlwifi/rtl8192cu/mac.c index 85b6bdb..da4f587 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/mac.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/mac.c @@ -289,14 +289,30 @@ void rtl92c_set_key(struct ieee80211_hw *hw, u32 key_index, macaddr = cam_const_broad; entry_id = key_index; } else { + if (mac->opmode == NL80211_IFTYPE_AP || + mac->opmode == NL80211_IFTYPE_MESH_POINT) { + entry_id = rtl_cam_get_free_entry(hw, + p_macaddr); + if (entry_id >= TOTAL_CAM_ENTRY) { + RT_TRACE(rtlpriv, COMP_SEC, + DBG_EMERG, + "Can not find free hw security cam entry\n"); + return; + } + } else { + entry_id = CAM_PAIRWISE_KEY_POSITION; + } + key_index = PAIRWISE_KEYIDX; - entry_id = CAM_PAIRWISE_KEY_POSITION; is_pairwise = true; } } if (rtlpriv->sec.key_len[key_index] == 0) { RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "delete one entry\n"); + if (mac->opmode == NL80211_IFTYPE_AP || + mac->opmode == NL80211_IFTYPE_MESH_POINT) + rtl_cam_del_entry(hw, p_macaddr); rtl_cam_delete_one_entry(hw, p_macaddr, entry_id); } else { RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c index 938b1e6..826f085 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c @@ -106,8 +106,7 @@ static struct rtl_hal_ops rtl8192cu_hal_ops = { .update_interrupt_mask = rtl92cu_update_interrupt_mask, .get_hw_reg = rtl92cu_get_hw_reg, .set_hw_reg = rtl92cu_set_hw_reg, - .update_rate_tbl = rtl92cu_update_hal_rate_table, - .update_rate_mask = rtl92cu_update_hal_rate_mask, + .update_rate_tbl = rtl92cu_update_hal_rate_tbl, .fill_tx_desc = rtl92cu_tx_fill_desc, .fill_fake_txdesc = rtl92cu_fill_fake_txdesc, .fill_tx_cmddesc = rtl92cu_tx_fill_cmddesc, @@ -137,6 +136,7 @@ static struct rtl_hal_ops rtl8192cu_hal_ops = { .phy_lc_calibrate = _rtl92cu_phy_lc_calibrate, .phy_set_bw_mode_callback = rtl92cu_phy_set_bw_mode_callback, .dm_dynamic_txpower = rtl92cu_dm_dynamic_txpower, + .fill_h2c_cmd = rtl92c_fill_h2c_cmd, }; static struct rtl_mod_params rtl92cu_mod_params = { diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.h b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.h index a1310ab..262e1e4 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.h +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.h @@ -49,5 +49,8 @@ bool rtl92cu_phy_set_rf_power_state(struct ieee80211_hw *hw, u32 rtl92cu_phy_query_rf_reg(struct ieee80211_hw *hw, enum radio_path rfpath, u32 regaddr, u32 bitmask); void rtl92cu_phy_set_bw_mode_callback(struct ieee80211_hw *hw); +void rtl92cu_update_hal_rate_tbl(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, + u8 rssi_level); #endif diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c index 76732b0..a3532e0 100644 --- a/drivers/net/wireless/rtlwifi/usb.c +++ b/drivers/net/wireless/rtlwifi/usb.c @@ -824,6 +824,7 @@ static void rtl_usb_stop(struct ieee80211_hw *hw) /* should after adapter start and interrupt enable. */ set_hal_stop(rtlhal); + cancel_work_sync(&rtlpriv->works.fill_h2c_cmd); /* Enable software */ SET_USB_STOP(rtlusb); rtl_usb_deinit(hw); @@ -1026,6 +1027,16 @@ static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw, return false; } +static void rtl_fill_h2c_cmd_work_callback(struct work_struct *work) +{ + struct rtl_works *rtlworks = + container_of(work, struct rtl_works, fill_h2c_cmd); + struct ieee80211_hw *hw = rtlworks->hw; + struct rtl_priv *rtlpriv = rtl_priv(hw); + + rtlpriv->cfg->ops->fill_h2c_cmd(hw, H2C_RA_MASK, 5, rtlpriv->rate_mask); +} + static struct rtl_intf_ops rtl_usb_ops = { .adapter_start = rtl_usb_start, .adapter_stop = rtl_usb_stop, @@ -1057,6 +1068,8 @@ int rtl_usb_probe(struct usb_interface *intf, /* this spin lock must be initialized early */ spin_lock_init(&rtlpriv->locks.usb_lock); + INIT_WORK(&rtlpriv->works.fill_h2c_cmd, + rtl_fill_h2c_cmd_work_callback); rtlpriv->usb_data_index = 0; init_completion(&rtlpriv->firmware_loading_complete); diff --git a/drivers/net/wireless/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h index 44328ba..cc03e7c 100644 --- a/drivers/net/wireless/rtlwifi/wifi.h +++ b/drivers/net/wireless/rtlwifi/wifi.h @@ -1736,6 +1736,8 @@ struct rtl_hal_ops { void (*bt_wifi_media_status_notify) (struct ieee80211_hw *hw, bool mstate); void (*bt_coex_off_before_lps) (struct ieee80211_hw *hw); + void (*fill_h2c_cmd) (struct ieee80211_hw *hw, u8 element_id, + u32 cmd_len, u8 *p_cmdbuffer); }; struct rtl_intf_ops { @@ -1869,6 +1871,7 @@ struct rtl_works { struct delayed_work fwevt_wq; struct work_struct lps_change_work; + struct work_struct fill_h2c_cmd; }; struct rtl_debug { @@ -2048,6 +2051,7 @@ struct rtl_priv { }; }; bool enter_ps; /* true when entering PS */ + u8 rate_mask[5]; /*This must be the last item so that it points to the data allocated -- cgit v0.10.2 From 60c28cf18f970e1c1bd40d615596eeab6efbd9d7 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Fri, 10 May 2013 10:19:38 +0300 Subject: wl12xx: fix minimum required firmware version for wl127x multirole There was a typo in commit 8675f9 (wlcore/wl12xx/wl18xx: verify multi-role and single-role fw versions), which was causing the multirole firmware for wl127x (WiLink6) to be rejected. The actual minimum version needed for wl127x multirole is 6.5.7.0.42. Reported-by: Levi Pearson Reported-by: Michael Scott Cc: stable@kernel.org # 3.9+ Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ti/wl12xx/wl12xx.h b/drivers/net/wireless/ti/wl12xx/wl12xx.h index 222d035..139da4d 100644 --- a/drivers/net/wireless/ti/wl12xx/wl12xx.h +++ b/drivers/net/wireless/ti/wl12xx/wl12xx.h @@ -41,7 +41,7 @@ #define WL127X_IFTYPE_MR_VER 5 #define WL127X_MAJOR_MR_VER 7 #define WL127X_SUBTYPE_MR_VER WLCORE_FW_VER_IGNORE -#define WL127X_MINOR_MR_VER 115 +#define WL127X_MINOR_MR_VER 42 /* FW chip version for wl128x */ #define WL128X_CHIP_VER 7 -- cgit v0.10.2 From 0e284c074ef96554f2988298da7d110b0e8d1e23 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Fri, 10 May 2013 10:44:25 +0300 Subject: wl12xx: increase minimum singlerole firmware version required The minimum firmware version required for singlerole after recent driver changes is 6/7.3.10.0.133. Reported-by: Tony Lindgren Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ti/wl12xx/wl12xx.h b/drivers/net/wireless/ti/wl12xx/wl12xx.h index 139da4d..9e5484a 100644 --- a/drivers/net/wireless/ti/wl12xx/wl12xx.h +++ b/drivers/net/wireless/ti/wl12xx/wl12xx.h @@ -36,7 +36,7 @@ #define WL127X_IFTYPE_SR_VER 3 #define WL127X_MAJOR_SR_VER 10 #define WL127X_SUBTYPE_SR_VER WLCORE_FW_VER_IGNORE -#define WL127X_MINOR_SR_VER 115 +#define WL127X_MINOR_SR_VER 133 /* minimum multi-role FW version for wl127x */ #define WL127X_IFTYPE_MR_VER 5 #define WL127X_MAJOR_MR_VER 7 @@ -49,7 +49,7 @@ #define WL128X_IFTYPE_SR_VER 3 #define WL128X_MAJOR_SR_VER 10 #define WL128X_SUBTYPE_SR_VER WLCORE_FW_VER_IGNORE -#define WL128X_MINOR_SR_VER 115 +#define WL128X_MINOR_SR_VER 133 /* minimum multi-role FW version for wl128x */ #define WL128X_IFTYPE_MR_VER 5 #define WL128X_MAJOR_MR_VER 7 -- cgit v0.10.2 From a805de4d036152a4ad7d3b18a9993a5c86588d6d Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Tue, 7 May 2013 15:41:09 +0300 Subject: wl12xx/wl18xx: scan all 5ghz channels Due to a typo, the current code copies only sizeof(cmd->channels_2) bytes, which is smaller than the correct sizeof(cmd->channels_5) size, resulting in a partial scan (some channels are skipped). Signed-off-by: Eliad Peller Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ti/wl12xx/scan.c b/drivers/net/wireless/ti/wl12xx/scan.c index affdb3e..4a0bbb1 100644 --- a/drivers/net/wireless/ti/wl12xx/scan.c +++ b/drivers/net/wireless/ti/wl12xx/scan.c @@ -310,7 +310,7 @@ static void wl12xx_adjust_channels(struct wl1271_cmd_sched_scan_config *cmd, memcpy(cmd->channels_2, cmd_channels->channels_2, sizeof(cmd->channels_2)); memcpy(cmd->channels_5, cmd_channels->channels_5, - sizeof(cmd->channels_2)); + sizeof(cmd->channels_5)); /* channels_4 are not supported, so no need to copy them */ } diff --git a/drivers/net/wireless/ti/wl18xx/scan.c b/drivers/net/wireless/ti/wl18xx/scan.c index 09d9445..2b642f8 100644 --- a/drivers/net/wireless/ti/wl18xx/scan.c +++ b/drivers/net/wireless/ti/wl18xx/scan.c @@ -34,7 +34,7 @@ static void wl18xx_adjust_channels(struct wl18xx_cmd_scan_params *cmd, memcpy(cmd->channels_2, cmd_channels->channels_2, sizeof(cmd->channels_2)); memcpy(cmd->channels_5, cmd_channels->channels_5, - sizeof(cmd->channels_2)); + sizeof(cmd->channels_5)); /* channels_4 are not supported, so no need to copy them */ } -- cgit v0.10.2 From 87ccee46fabd235c2bac3652dee009e8f791dc10 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Thu, 30 May 2013 16:21:47 -0500 Subject: rtlwifi: Fix a false leak indication for PCI devices This false leak indication is avoided with a no-leak annotation to kmemleak. Signed-off-by: Larry Finger Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c index 999ffc1..c97e9d3 100644 --- a/drivers/net/wireless/rtlwifi/pci.c +++ b/drivers/net/wireless/rtlwifi/pci.c @@ -764,6 +764,7 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) "can't alloc skb for rx\n"); goto done; } + kmemleak_not_leak(new_skb); pci_unmap_single(rtlpci->pdev, *((dma_addr_t *) skb->cb), -- cgit v0.10.2 From 71aa5bba83f81722e7f6bfaeda16b983ba8a0cc2 Mon Sep 17 00:00:00 2001 From: Yijing Wang Date: Fri, 31 May 2013 14:05:32 +0800 Subject: net: wireless: iwlegacy: fix build error for il_pm_ops Fix build error for il_pm_ops if CONFIG_PM is set but CONFIG_PM_SLEEP is not set. ERROR: "il_pm_ops" [drivers/net/wireless/iwlegacy/iwl4965.ko] undefined! ERROR: "il_pm_ops" [drivers/net/wireless/iwlegacy/iwl3945.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Signed-off-by: Yijing Wang Cc: Stanislaw Gruszka Cc: "John W. Linville" Cc: netdev@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: Jingoo Han Acked-by: Jingoo Han Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h index f8246f2..4caaf52 100644 --- a/drivers/net/wireless/iwlegacy/common.h +++ b/drivers/net/wireless/iwlegacy/common.h @@ -1832,16 +1832,16 @@ u32 il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval); __le32 il_add_beacon_time(struct il_priv *il, u32 base, u32 addon, u32 beacon_interval); -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP extern const struct dev_pm_ops il_pm_ops; #define IL_LEGACY_PM_OPS (&il_pm_ops) -#else /* !CONFIG_PM */ +#else /* !CONFIG_PM_SLEEP */ #define IL_LEGACY_PM_OPS NULL -#endif /* !CONFIG_PM */ +#endif /* !CONFIG_PM_SLEEP */ /***************************************************** * Error Handling Debugging -- cgit v0.10.2 From 531671cb17af07281e6f28c1425f754346e65c41 Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Sat, 1 Jun 2013 07:08:09 +0530 Subject: ath9k: Disable PowerSave by default Almost all the DMA issues which have plagued ath9k (in station mode) for years are related to PS. Disabling PS usually "fixes" the user's connection stablility. Reports of DMA problems are still trickling in and are sitting in the kernel bugzilla. Until the PS code in ath9k is given a thorough review, disbale it by default. The slight increase in chip power consumption is a small price to pay for improved link stability. Cc: stable@vger.kernel.org Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index aba4151..47d3269 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -787,8 +787,7 @@ void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) hw->wiphy->iface_combinations = if_comb; hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); - if (AR_SREV_5416(sc->sc_ah)) - hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; + hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; -- cgit v0.10.2 From 96005931785238e1a24febf65ffb5016273e8225 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 3 Jun 2013 11:18:57 +0200 Subject: Revert "ath9k_hw: Update rx gain initval to improve rx sensitivity" This reverts commit 68d9e1fa24d9c7c2e527f49df8d18fb8cf0ec943 This change reduces rx sensitivity with no apparent extra benefit. It looks like it was meant for testing in a specific scenario, but it was never properly validated. Cc: rmanohar@qca.qualcomm.com Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h index db5ffad..7546b9a 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h +++ b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h @@ -958,11 +958,11 @@ static const u32 ar9300Common_rx_gain_table_2p2[][2] = { {0x0000a074, 0x00000000}, {0x0000a078, 0x00000000}, {0x0000a07c, 0x00000000}, - {0x0000a080, 0x1a1a1a1a}, - {0x0000a084, 0x1a1a1a1a}, - {0x0000a088, 0x1a1a1a1a}, - {0x0000a08c, 0x1a1a1a1a}, - {0x0000a090, 0x171a1a1a}, + {0x0000a080, 0x22222229}, + {0x0000a084, 0x1d1d1d1d}, + {0x0000a088, 0x1d1d1d1d}, + {0x0000a08c, 0x1d1d1d1d}, + {0x0000a090, 0x171d1d1d}, {0x0000a094, 0x11111717}, {0x0000a098, 0x00030311}, {0x0000a09c, 0x00000000}, -- cgit v0.10.2 From 5efac94999ff218e0101f67a059e44abb4b0b523 Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Thu, 6 Jun 2013 10:06:29 +0530 Subject: ath9k: Use minstrel rate control by default The ath9k rate control algorithm has various architectural issues that make it a poor fit in scenarios like congested environments etc. An example: https://bugzilla.redhat.com/show_bug.cgi?id=927191 Change the default to minstrel which is more robust in such cases. The ath9k RC code is left in the driver for now, maybe it can be removed altogether later on. Cc: stable@vger.kernel.org Cc: Jouni Malinen Cc: Linus Torvalds Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/Kconfig b/drivers/net/wireless/ath/ath9k/Kconfig index f3dc124..3c2cbc9 100644 --- a/drivers/net/wireless/ath/ath9k/Kconfig +++ b/drivers/net/wireless/ath/ath9k/Kconfig @@ -92,13 +92,17 @@ config ATH9K_MAC_DEBUG This option enables collection of statistics for Rx/Tx status data and some other MAC related statistics -config ATH9K_RATE_CONTROL +config ATH9K_LEGACY_RATE_CONTROL bool "Atheros ath9k rate control" depends on ATH9K - default y + default n ---help--- Say Y, if you want to use the ath9k specific rate control - module instead of minstrel_ht. + module instead of minstrel_ht. Be warned that there are various + issues with the ath9k RC and minstrel is a more robust algorithm. + Note that even if this option is selected, "ath9k_rate_control" + has to be passed to mac80211 using the module parameter, + ieee80211_default_rc_algo. config ATH9K_HTC tristate "Atheros HTC based wireless cards support" diff --git a/drivers/net/wireless/ath/ath9k/Makefile b/drivers/net/wireless/ath/ath9k/Makefile index 2ad8f94..75ee9e7 100644 --- a/drivers/net/wireless/ath/ath9k/Makefile +++ b/drivers/net/wireless/ath/ath9k/Makefile @@ -8,7 +8,7 @@ ath9k-y += beacon.o \ antenna.o ath9k-$(CONFIG_ATH9K_BTCOEX_SUPPORT) += mci.o -ath9k-$(CONFIG_ATH9K_RATE_CONTROL) += rc.o +ath9k-$(CONFIG_ATH9K_LEGACY_RATE_CONTROL) += rc.o ath9k-$(CONFIG_ATH9K_PCI) += pci.o ath9k-$(CONFIG_ATH9K_AHB) += ahb.o ath9k-$(CONFIG_ATH9K_DEBUGFS) += debug.o diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index 47d3269..2ba4945 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -829,10 +829,6 @@ void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) sc->ant_rx = hw->wiphy->available_antennas_rx; sc->ant_tx = hw->wiphy->available_antennas_tx; -#ifdef CONFIG_ATH9K_RATE_CONTROL - hw->rate_control_algorithm = "ath9k_rate_control"; -#endif - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &sc->sbands[IEEE80211_BAND_2GHZ]; diff --git a/drivers/net/wireless/ath/ath9k/rc.h b/drivers/net/wireless/ath/ath9k/rc.h index 267dbfc..b9a8738 100644 --- a/drivers/net/wireless/ath/ath9k/rc.h +++ b/drivers/net/wireless/ath/ath9k/rc.h @@ -231,7 +231,7 @@ static inline void ath_debug_stat_retries(struct ath_rate_priv *rc, int rix, } #endif -#ifdef CONFIG_ATH9K_RATE_CONTROL +#ifdef CONFIG_ATH9K_LEGACY_RATE_CONTROL int ath_rate_control_register(void); void ath_rate_control_unregister(void); #else -- cgit v0.10.2 From e0e29b683d6784ef59bbc914eac85a04b650e63c Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 10 May 2013 14:48:21 -0700 Subject: b43: stop format string leaking into error msgs The module parameter "fwpostfix" is userspace controllable, unfiltered, and is used to define the firmware filename. b43_do_request_fw() populates ctx->errors[] on error, containing the firmware filename. b43err() parses its arguments as a format string. For systems with b43 hardware, this could lead to a uid-0 to ring-0 escalation. CVE-2013-2852 Signed-off-by: Kees Cook Cc: stable@vger.kernel.org Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index 6dd07e2..a95b77a 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -2458,7 +2458,7 @@ static void b43_request_firmware(struct work_struct *work) for (i = 0; i < B43_NR_FWTYPES; i++) { errmsg = ctx->errors[i]; if (strlen(errmsg)) - b43err(dev->wl, errmsg); + b43err(dev->wl, "%s", errmsg); } b43_print_fw_helptext(dev->wl, 1); goto out; -- cgit v0.10.2 From a8cf0194b7187fb65dfff28a1c5153d442e3836a Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Tue, 4 Jun 2013 14:19:10 +0200 Subject: iwlegacy: fix rate control regression Since driver does not use control.rates[0].count, we have never set that variable. But currently, after rate control API rewrite, this is required by mac80211. Otherwise legacy rates control does not work and we transmit always at 1Mbit/s on pre 11n networks. Signed-off-by: Stanislaw Gruszka Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/iwlegacy/3945-rs.c b/drivers/net/wireless/iwlegacy/3945-rs.c index c9f197d..fe31590 100644 --- a/drivers/net/wireless/iwlegacy/3945-rs.c +++ b/drivers/net/wireless/iwlegacy/3945-rs.c @@ -816,6 +816,7 @@ out: rs_sta->last_txrate_idx = idx; info->control.rates[0].idx = rs_sta->last_txrate_idx; } + info->control.rates[0].count = 1; D_RATE("leave: %d\n", idx); } diff --git a/drivers/net/wireless/iwlegacy/4965-rs.c b/drivers/net/wireless/iwlegacy/4965-rs.c index 1fc0b22..ed3c42a 100644 --- a/drivers/net/wireless/iwlegacy/4965-rs.c +++ b/drivers/net/wireless/iwlegacy/4965-rs.c @@ -2268,7 +2268,7 @@ il4965_rs_get_rate(void *il_r, struct ieee80211_sta *sta, void *il_sta, info->control.rates[0].flags = 0; } info->control.rates[0].idx = rate_idx; - + info->control.rates[0].count = 1; } static void * -- cgit v0.10.2 From 541e667e1c0f31a7e11d909eb831cf476814a201 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Thu, 6 Jun 2013 13:29:56 +0200 Subject: brcmsmac: disable power-save related functions This patch fixes a regression introduced by: commit 6da3b6c48d79da96a36c2632053cf4f53bf48fb2 Author: Hauke Mehrtens Date: Sun Mar 24 01:45:52 2013 +0100 brcmsmac: remove brcms_bss_cfg->associated The regression behaviour was described on mailing list. http://mid.gmane.org/5197DC4F.7030503@broadcom.com: "On laptop I installed kernel with brcmsmac compiled as module. It comes up and associates during boot, but after logging in there is no connectivity. Triggering reassoc gives connectivity for some time, but after a while (1-2 min) it stops." Before the mentioned commit the return value of the function brcms_c_ps_allowed() was always false, which is desired behaviour as power-save is not supported at the moment. Therefor, the function is changed to just return false instead of simply reverting the mentioned commit. Bug: 58471 Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c index 28e7aee..9fd6f2f 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c @@ -3074,21 +3074,8 @@ static void brcms_b_antsel_set(struct brcms_hardware *wlc_hw, u32 antsel_avail) */ static bool brcms_c_ps_allowed(struct brcms_c_info *wlc) { - /* disallow PS when one of the following global conditions meets */ - if (!wlc->pub->associated) - return false; - - /* disallow PS when one of these meets when not scanning */ - if (wlc->filter_flags & FIF_PROMISC_IN_BSS) - return false; - - if (wlc->bsscfg->type == BRCMS_TYPE_AP) - return false; - - if (wlc->bsscfg->type == BRCMS_TYPE_ADHOC) - return false; - - return true; + /* not supporting PS so always return false for now */ + return false; } static void brcms_c_statsupd(struct brcms_c_info *wlc) -- cgit v0.10.2 From 8c8d2017ba25c510ddf093419048460db1109bc4 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Tue, 11 Jun 2013 18:48:53 +0200 Subject: rt2800: fix RT5390 & RT3290 TX power settings regression My change: commit cee2c7315f60beeff6137ee59e99acc77d636eeb Author: Stanislaw Gruszka Date: Fri Oct 5 13:44:09 2012 +0200 rt2800: use BBP_R1 for setting tx power unfortunately does not work well with RT5390 and RT3290 chips as they require different temperature compensation TX power settings (TSSI tuning). Since that commit make wireless connection very unstable on those chips, restore previous behavior to fix regression. Once we implement proper TSSI tuning on 5390/3290 we can restore back setting TX power by BBP_R1 register for those chips. Reported-and-tested-by: Mike Romberg Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka Acked-by: Gertjan van Wingerde Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index b52d70c..72f32e5 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -3027,19 +3027,26 @@ static void rt2800_config_txpower(struct rt2x00_dev *rt2x00dev, * TODO: we do not use +6 dBm option to do not increase power beyond * regulatory limit, however this could be utilized for devices with * CAPABILITY_POWER_LIMIT. + * + * TODO: add different temperature compensation code for RT3290 & RT5390 + * to allow to use BBP_R1 for those chips. */ - rt2800_bbp_read(rt2x00dev, 1, &r1); - if (delta <= -12) { - power_ctrl = 2; - delta += 12; - } else if (delta <= -6) { - power_ctrl = 1; - delta += 6; - } else { - power_ctrl = 0; + if (!rt2x00_rt(rt2x00dev, RT3290) && + !rt2x00_rt(rt2x00dev, RT5390)) { + rt2800_bbp_read(rt2x00dev, 1, &r1); + if (delta <= -12) { + power_ctrl = 2; + delta += 12; + } else if (delta <= -6) { + power_ctrl = 1; + delta += 6; + } else { + power_ctrl = 0; + } + rt2x00_set_field8(&r1, BBP1_TX_POWER_CTRL, power_ctrl); + rt2800_bbp_write(rt2x00dev, 1, r1); } - rt2x00_set_field8(&r1, BBP1_TX_POWER_CTRL, power_ctrl); - rt2800_bbp_write(rt2x00dev, 1, r1); + offset = TX_PWR_CFG_0; for (i = 0; i < EEPROM_TXPOWER_BYRATE_SIZE; i += 2) { -- cgit v0.10.2 From b1983b0a7578de09211a696802edab83fd253303 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 11 Jun 2013 11:56:52 -0700 Subject: x86, relocs: Move __vvar_page from S_ABS to S_REL The __vvar_page relocation should actually be listed in S_REL instead of S_ABS. Oddly, this didn't always cause things to break, presumably because there are no users for relocation information on 64 bits yet. [ hpa: Not for stable - new code in 3.10 ] Signed-off-by: Kees Cook Link: http://lkml.kernel.org/r/20130611185652.GA23674@www.outflux.net Reported-by: Michael Davidson Signed-off-by: H. Peter Anvin diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c index 590be10..f7bab68 100644 --- a/arch/x86/tools/relocs.c +++ b/arch/x86/tools/relocs.c @@ -42,9 +42,6 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = { "^(xen_irq_disable_direct_reloc$|" "xen_save_fl_direct_reloc$|" "VDSO|" -#if ELF_BITS == 64 - "__vvar_page|" -#endif "__crc_)", /* @@ -72,6 +69,7 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = { "__per_cpu_load|" "init_per_cpu__.*|" "__end_rodata_hpage_align|" + "__vvar_page|" #endif "_end)$" }; -- cgit v0.10.2 From c8a22d19dd238ede87aa0ac4f7dbea8da039b9c1 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 5 Jun 2013 11:47:18 -0700 Subject: x86: Fix typo in kexec register clearing Fixes a typo in register clearing code. Thanks to PaX Team for fixing this originally, and James Troup for pointing it out. Signed-off-by: Kees Cook Link: http://lkml.kernel.org/r/20130605184718.GA8396@www.outflux.net Cc: v2.6.30+ Cc: PaX Team Signed-off-by: H. Peter Anvin diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S index 7a6f3b3..f2bb9c9 100644 --- a/arch/x86/kernel/relocate_kernel_64.S +++ b/arch/x86/kernel/relocate_kernel_64.S @@ -160,7 +160,7 @@ identity_mapped: xorq %rbp, %rbp xorq %r8, %r8 xorq %r9, %r9 - xorq %r10, %r9 + xorq %r10, %r10 xorq %r11, %r11 xorq %r12, %r12 xorq %r13, %r13 -- cgit v0.10.2 From 16e53dbf10a2d7e228709a7286310e629ede5e45 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Wed, 12 Jun 2013 14:04:36 -0700 Subject: CPU hotplug: provide a generic helper to disable/enable CPU hotplug There are instances in the kernel where we would like to disable CPU hotplug (from sysfs) during some important operation. Today the freezer code depends on this and the code to do it was kinda tailor-made for that. Restructure the code and make it generic enough to be useful for other usecases too. Signed-off-by: Srivatsa S. Bhat Signed-off-by: Robin Holt Cc: H. Peter Anvin Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Russ Anderson Cc: Robin Holt Cc: Russell King Cc: Guan Xuetao Cc: Shawn Guo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/cpu.h b/include/linux/cpu.h index c6f6e08..9f3c7e8 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -175,6 +175,8 @@ extern struct bus_type cpu_subsys; extern void get_online_cpus(void); extern void put_online_cpus(void); +extern void cpu_hotplug_disable(void); +extern void cpu_hotplug_enable(void); #define hotcpu_notifier(fn, pri) cpu_notifier(fn, pri) #define register_hotcpu_notifier(nb) register_cpu_notifier(nb) #define unregister_hotcpu_notifier(nb) unregister_cpu_notifier(nb) @@ -198,6 +200,8 @@ static inline void cpu_hotplug_driver_unlock(void) #define get_online_cpus() do { } while (0) #define put_online_cpus() do { } while (0) +#define cpu_hotplug_disable() do { } while (0) +#define cpu_hotplug_enable() do { } while (0) #define hotcpu_notifier(fn, pri) do { (void)(fn); } while (0) /* These aren't inline functions due to a GCC bug. */ #define register_hotcpu_notifier(nb) ({ (void)(nb); 0; }) diff --git a/kernel/cpu.c b/kernel/cpu.c index b5e4ab2..198a388 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -133,6 +133,27 @@ static void cpu_hotplug_done(void) mutex_unlock(&cpu_hotplug.lock); } +/* + * Wait for currently running CPU hotplug operations to complete (if any) and + * disable future CPU hotplug (from sysfs). The 'cpu_add_remove_lock' protects + * the 'cpu_hotplug_disabled' flag. The same lock is also acquired by the + * hotplug path before performing hotplug operations. So acquiring that lock + * guarantees mutual exclusion from any currently running hotplug operations. + */ +void cpu_hotplug_disable(void) +{ + cpu_maps_update_begin(); + cpu_hotplug_disabled = 1; + cpu_maps_update_done(); +} + +void cpu_hotplug_enable(void) +{ + cpu_maps_update_begin(); + cpu_hotplug_disabled = 0; + cpu_maps_update_done(); +} + #else /* #if CONFIG_HOTPLUG_CPU */ static void cpu_hotplug_begin(void) {} static void cpu_hotplug_done(void) {} @@ -541,36 +562,6 @@ static int __init alloc_frozen_cpus(void) core_initcall(alloc_frozen_cpus); /* - * Prevent regular CPU hotplug from racing with the freezer, by disabling CPU - * hotplug when tasks are about to be frozen. Also, don't allow the freezer - * to continue until any currently running CPU hotplug operation gets - * completed. - * To modify the 'cpu_hotplug_disabled' flag, we need to acquire the - * 'cpu_add_remove_lock'. And this same lock is also taken by the regular - * CPU hotplug path and released only after it is complete. Thus, we - * (and hence the freezer) will block here until any currently running CPU - * hotplug operation gets completed. - */ -void cpu_hotplug_disable_before_freeze(void) -{ - cpu_maps_update_begin(); - cpu_hotplug_disabled = 1; - cpu_maps_update_done(); -} - - -/* - * When tasks have been thawed, re-enable regular CPU hotplug (which had been - * disabled while beginning to freeze tasks). - */ -void cpu_hotplug_enable_after_thaw(void) -{ - cpu_maps_update_begin(); - cpu_hotplug_disabled = 0; - cpu_maps_update_done(); -} - -/* * When callbacks for CPU hotplug notifications are being executed, we must * ensure that the state of the system with respect to the tasks being frozen * or not, as reported by the notification, remains unchanged *throughout the @@ -589,12 +580,12 @@ cpu_hotplug_pm_callback(struct notifier_block *nb, case PM_SUSPEND_PREPARE: case PM_HIBERNATION_PREPARE: - cpu_hotplug_disable_before_freeze(); + cpu_hotplug_disable(); break; case PM_POST_SUSPEND: case PM_POST_HIBERNATION: - cpu_hotplug_enable_after_thaw(); + cpu_hotplug_enable(); break; default: -- cgit v0.10.2 From cf7df378aa4ff7da3a44769b7ff6e9eef1a9f3db Mon Sep 17 00:00:00 2001 From: Robin Holt Date: Wed, 12 Jun 2013 14:04:37 -0700 Subject: reboot: rigrate shutdown/reboot to boot cpu We recently noticed that reboot of a 1024 cpu machine takes approx 16 minutes of just stopping the cpus. The slowdown was tracked to commit f96972f2dc63 ("kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()"). The current implementation does all the work of hot removing the cpus before halting the system. We are switching to just migrating to the boot cpu and then continuing with shutdown/reboot. This also has the effect of not breaking x86's command line parameter for specifying the reboot cpu. Note, this code was shamelessly copied from arch/x86/kernel/reboot.c with bits removed pertaining to the reboot_cpu command line parameter. Signed-off-by: Robin Holt Tested-by: Shawn Guo Cc: "Srivatsa S. Bhat" Cc: H. Peter Anvin Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Russ Anderson Cc: Robin Holt Cc: Russell King Cc: Guan Xuetao Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/sys.c b/kernel/sys.c index b95d3c7..2bbd9a7 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -362,6 +362,29 @@ int unregister_reboot_notifier(struct notifier_block *nb) } EXPORT_SYMBOL(unregister_reboot_notifier); +/* Add backwards compatibility for stable trees. */ +#ifndef PF_NO_SETAFFINITY +#define PF_NO_SETAFFINITY PF_THREAD_BOUND +#endif + +static void migrate_to_reboot_cpu(void) +{ + /* The boot cpu is always logical cpu 0 */ + int cpu = 0; + + cpu_hotplug_disable(); + + /* Make certain the cpu I'm about to reboot on is online */ + if (!cpu_online(cpu)) + cpu = cpumask_first(cpu_online_mask); + + /* Prevent races with other tasks migrating this task */ + current->flags |= PF_NO_SETAFFINITY; + + /* Make certain I only run on the appropriate processor */ + set_cpus_allowed_ptr(current, cpumask_of(cpu)); +} + /** * kernel_restart - reboot the system * @cmd: pointer to buffer containing command to execute for restart @@ -373,7 +396,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier); void kernel_restart(char *cmd) { kernel_restart_prepare(cmd); - disable_nonboot_cpus(); + migrate_to_reboot_cpu(); syscore_shutdown(); if (!cmd) printk(KERN_EMERG "Restarting system.\n"); @@ -400,7 +423,7 @@ static void kernel_shutdown_prepare(enum system_states state) void kernel_halt(void) { kernel_shutdown_prepare(SYSTEM_HALT); - disable_nonboot_cpus(); + migrate_to_reboot_cpu(); syscore_shutdown(); printk(KERN_EMERG "System halted.\n"); kmsg_dump(KMSG_DUMP_HALT); @@ -419,7 +442,7 @@ void kernel_power_off(void) kernel_shutdown_prepare(SYSTEM_POWER_OFF); if (pm_power_off_prepare) pm_power_off_prepare(); - disable_nonboot_cpus(); + migrate_to_reboot_cpu(); syscore_shutdown(); printk(KERN_EMERG "Power down.\n"); kmsg_dump(KMSG_DUMP_POWEROFF); -- cgit v0.10.2 From 637241a900cbd982f744d44646b48a273d609b34 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 12 Jun 2013 14:04:39 -0700 Subject: kmsg: honor dmesg_restrict sysctl on /dev/kmsg The dmesg_restrict sysctl currently covers the syslog method for access dmesg, however /dev/kmsg isn't covered by the same protections. Most people haven't noticed because util-linux dmesg(1) defaults to using the syslog method for access in older versions. With util-linux dmesg(1) defaults to reading directly from /dev/kmsg. To fix /dev/kmsg, let's compare the existing interfaces and what they allow: - /proc/kmsg allows: - open (SYSLOG_ACTION_OPEN) if CAP_SYSLOG since it uses a destructive single-reader interface (SYSLOG_ACTION_READ). - everything, after an open. - syslog syscall allows: - anything, if CAP_SYSLOG. - SYSLOG_ACTION_READ_ALL and SYSLOG_ACTION_SIZE_BUFFER, if dmesg_restrict==0. - nothing else (EPERM). The use-cases were: - dmesg(1) needs to do non-destructive SYSLOG_ACTION_READ_ALLs. - sysklog(1) needs to open /proc/kmsg, drop privs, and still issue the destructive SYSLOG_ACTION_READs. AIUI, dmesg(1) is moving to /dev/kmsg, and systemd-journald doesn't clear the ring buffer. Based on the comments in devkmsg_llseek, it sounds like actions besides reading aren't going to be supported by /dev/kmsg (i.e. SYSLOG_ACTION_CLEAR), so we have a strict subset of the non-destructive syslog syscall actions. To this end, move the check as Josh had done, but also rename the constants to reflect their new uses (SYSLOG_FROM_CALL becomes SYSLOG_FROM_READER, and SYSLOG_FROM_FILE becomes SYSLOG_FROM_PROC). SYSLOG_FROM_READER allows non-destructive actions, and SYSLOG_FROM_PROC allows destructive actions after a capabilities-constrained SYSLOG_ACTION_OPEN check. - /dev/kmsg allows: - open if CAP_SYSLOG or dmesg_restrict==0 - reading/polling, after open Addresses https://bugzilla.redhat.com/show_bug.cgi?id=903192 [akpm@linux-foundation.org: use pr_warn_once()] Signed-off-by: Kees Cook Reported-by: Christian Kujau Tested-by: Josh Boyer Cc: Kay Sievers Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/fs/proc/kmsg.c b/fs/proc/kmsg.c index bd4b5a7..bdfabda 100644 --- a/fs/proc/kmsg.c +++ b/fs/proc/kmsg.c @@ -21,12 +21,12 @@ extern wait_queue_head_t log_wait; static int kmsg_open(struct inode * inode, struct file * file) { - return do_syslog(SYSLOG_ACTION_OPEN, NULL, 0, SYSLOG_FROM_FILE); + return do_syslog(SYSLOG_ACTION_OPEN, NULL, 0, SYSLOG_FROM_PROC); } static int kmsg_release(struct inode * inode, struct file * file) { - (void) do_syslog(SYSLOG_ACTION_CLOSE, NULL, 0, SYSLOG_FROM_FILE); + (void) do_syslog(SYSLOG_ACTION_CLOSE, NULL, 0, SYSLOG_FROM_PROC); return 0; } @@ -34,15 +34,15 @@ static ssize_t kmsg_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { if ((file->f_flags & O_NONBLOCK) && - !do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_FILE)) + !do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_PROC)) return -EAGAIN; - return do_syslog(SYSLOG_ACTION_READ, buf, count, SYSLOG_FROM_FILE); + return do_syslog(SYSLOG_ACTION_READ, buf, count, SYSLOG_FROM_PROC); } static unsigned int kmsg_poll(struct file *file, poll_table *wait) { poll_wait(file, &log_wait, wait); - if (do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_FILE)) + if (do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_PROC)) return POLLIN | POLLRDNORM; return 0; } diff --git a/include/linux/syslog.h b/include/linux/syslog.h index 3891139..98a3153 100644 --- a/include/linux/syslog.h +++ b/include/linux/syslog.h @@ -44,8 +44,8 @@ /* Return size of the log buffer */ #define SYSLOG_ACTION_SIZE_BUFFER 10 -#define SYSLOG_FROM_CALL 0 -#define SYSLOG_FROM_FILE 1 +#define SYSLOG_FROM_READER 0 +#define SYSLOG_FROM_PROC 1 int do_syslog(int type, char __user *buf, int count, bool from_file); diff --git a/kernel/printk.c b/kernel/printk.c index fa36e14..8212c1a 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -363,6 +363,53 @@ static void log_store(int facility, int level, log_next_seq++; } +#ifdef CONFIG_SECURITY_DMESG_RESTRICT +int dmesg_restrict = 1; +#else +int dmesg_restrict; +#endif + +static int syslog_action_restricted(int type) +{ + if (dmesg_restrict) + return 1; + /* + * Unless restricted, we allow "read all" and "get buffer size" + * for everybody. + */ + return type != SYSLOG_ACTION_READ_ALL && + type != SYSLOG_ACTION_SIZE_BUFFER; +} + +static int check_syslog_permissions(int type, bool from_file) +{ + /* + * If this is from /proc/kmsg and we've already opened it, then we've + * already done the capabilities checks at open time. + */ + if (from_file && type != SYSLOG_ACTION_OPEN) + return 0; + + if (syslog_action_restricted(type)) { + if (capable(CAP_SYSLOG)) + return 0; + /* + * For historical reasons, accept CAP_SYS_ADMIN too, with + * a warning. + */ + if (capable(CAP_SYS_ADMIN)) { + pr_warn_once("%s (%d): Attempt to access syslog with " + "CAP_SYS_ADMIN but no CAP_SYSLOG " + "(deprecated).\n", + current->comm, task_pid_nr(current)); + return 0; + } + return -EPERM; + } + return security_syslog(type); +} + + /* /dev/kmsg - userspace message inject/listen interface */ struct devkmsg_user { u64 seq; @@ -620,7 +667,8 @@ static int devkmsg_open(struct inode *inode, struct file *file) if ((file->f_flags & O_ACCMODE) == O_WRONLY) return 0; - err = security_syslog(SYSLOG_ACTION_READ_ALL); + err = check_syslog_permissions(SYSLOG_ACTION_READ_ALL, + SYSLOG_FROM_READER); if (err) return err; @@ -813,45 +861,6 @@ static inline void boot_delay_msec(int level) } #endif -#ifdef CONFIG_SECURITY_DMESG_RESTRICT -int dmesg_restrict = 1; -#else -int dmesg_restrict; -#endif - -static int syslog_action_restricted(int type) -{ - if (dmesg_restrict) - return 1; - /* Unless restricted, we allow "read all" and "get buffer size" for everybody */ - return type != SYSLOG_ACTION_READ_ALL && type != SYSLOG_ACTION_SIZE_BUFFER; -} - -static int check_syslog_permissions(int type, bool from_file) -{ - /* - * If this is from /proc/kmsg and we've already opened it, then we've - * already done the capabilities checks at open time. - */ - if (from_file && type != SYSLOG_ACTION_OPEN) - return 0; - - if (syslog_action_restricted(type)) { - if (capable(CAP_SYSLOG)) - return 0; - /* For historical reasons, accept CAP_SYS_ADMIN too, with a warning */ - if (capable(CAP_SYS_ADMIN)) { - printk_once(KERN_WARNING "%s (%d): " - "Attempt to access syslog with CAP_SYS_ADMIN " - "but no CAP_SYSLOG (deprecated).\n", - current->comm, task_pid_nr(current)); - return 0; - } - return -EPERM; - } - return 0; -} - #if defined(CONFIG_PRINTK_TIME) static bool printk_time = 1; #else @@ -1249,7 +1258,7 @@ out: SYSCALL_DEFINE3(syslog, int, type, char __user *, buf, int, len) { - return do_syslog(type, buf, len, SYSLOG_FROM_CALL); + return do_syslog(type, buf, len, SYSLOG_FROM_READER); } /* -- cgit v0.10.2 From 5402b8047b0d286b6501f9097891cbf1e06daa3a Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Wed, 12 Jun 2013 14:04:40 -0700 Subject: lib/mpi/mpicoder.c: looping issue, need stop when equal to zero, found by 'EXTRA_FLAGS=-W'. For 'while' looping, need stop when 'nbytes == 0', or will cause issue. ('nbytes' is size_t which is always bigger or equal than zero). The related warning: (with EXTRA_CFLAGS=-W) lib/mpi/mpicoder.c:40:2: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] Signed-off-by: Chen Gang Cc: Rusty Russell Cc: David Howells Cc: James Morris Cc: Andy Shevchenko Acked-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/lib/mpi/mpicoder.c b/lib/mpi/mpicoder.c index 5f9c44c..4cc6442 100644 --- a/lib/mpi/mpicoder.c +++ b/lib/mpi/mpicoder.c @@ -37,7 +37,7 @@ MPI mpi_read_raw_data(const void *xbuffer, size_t nbytes) mpi_limb_t a; MPI val = NULL; - while (nbytes >= 0 && buffer[0] == 0) { + while (nbytes > 0 && buffer[0] == 0) { buffer++; nbytes--; } -- cgit v0.10.2 From 7869e590679ed71cd1a1e676e8c1c179762c3efe Mon Sep 17 00:00:00 2001 From: "Xiaowei.Hu" Date: Wed, 12 Jun 2013 14:04:41 -0700 Subject: ocfs2: ocfs2_prep_new_orphaned_file() should return ret If an error occurs, for example an EIO in __ocfs2_prepare_orphan_dir, ocfs2_prep_new_orphaned_file will release the inode_ac, then when the caller of ocfs2_prep_new_orphaned_file gets a 0 return, it will refer to a NULL ocfs2_alloc_context struct in the following functions. A kernel panic happens. Signed-off-by: "Xiaowei.Hu" Reviewed-by: shencanquan Acked-by: Sunil Mushran Cc: Joe Jin Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 04ee1b5..b563351 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -2216,7 +2216,7 @@ out: brelse(orphan_dir_bh); - return 0; + return ret; } int ocfs2_create_inode_in_orphan(struct inode *dir, -- cgit v0.10.2 From f101a9464bfbda42730b54a66f926d75ed2cd31e Mon Sep 17 00:00:00 2001 From: Andrey Vagin Date: Wed, 12 Jun 2013 14:04:42 -0700 Subject: memcg: don't initialize kmem-cache destroying work for root caches struct memcg_cache_params has a union. Different parts of this union are used for root and non-root caches. A part with destroying work is used only for non-root caches. BUG: unable to handle kernel paging request at 0000000fffffffe0 IP: kmem_cache_alloc+0x41/0x1f0 Modules linked in: netlink_diag af_packet_diag udp_diag tcp_diag inet_diag unix_diag ip6table_filter ip6_tables i2c_piix4 virtio_net virtio_balloon microcode i2c_core pcspkr floppy CPU: 0 PID: 1929 Comm: lt-vzctl Tainted: G D 3.10.0-rc1+ #2 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 RIP: kmem_cache_alloc+0x41/0x1f0 Call Trace: getname_flags.part.34+0x30/0x140 getname+0x38/0x60 do_sys_open+0xc5/0x1e0 SyS_open+0x22/0x30 system_call_fastpath+0x16/0x1b Code: f4 53 48 83 ec 18 8b 05 8e 53 b7 00 4c 8b 4d 08 21 f0 a8 10 74 0d 4c 89 4d c0 e8 1b 76 4a 00 4c 8b 4d c0 e9 92 00 00 00 4d 89 f5 <4d> 8b 45 00 65 4c 03 04 25 48 cd 00 00 49 8b 50 08 4d 8b 38 49 RIP [] kmem_cache_alloc+0x41/0x1f0 Signed-off-by: Andrey Vagin Cc: Konstantin Khlebnikov Cc: Glauber Costa Cc: Johannes Weiner Cc: Balbir Singh Cc: KAMEZAWA Hiroyuki Reviewed-by: Michal Hocko Cc: Li Zefan Cc: [3.9.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 010d6c1..931e38c 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3141,8 +3141,6 @@ int memcg_update_cache_size(struct kmem_cache *s, int num_groups) return -ENOMEM; } - INIT_WORK(&s->memcg_params->destroy, - kmem_cache_destroy_work_func); s->memcg_params->is_root_cache = true; /* -- cgit v0.10.2 From 5a280844bb3bcd79076cac6ad002f71d25c798e5 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Wed, 12 Jun 2013 14:04:44 -0700 Subject: drivers/rtc/rtc-tps6586x.c: device wakeup flags correction Use device_init_wakeup() instead of device_set_wakeup_capable() and move it before rtc dev registering. This fixes alarmtimer not registered when tps6586x rtc is the only wakeup compatible rtc in the system. Signed-off-by: Dmitry Osipenko Cc: Laxman Dewangan Cc: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c index 459c2ff..426901c 100644 --- a/drivers/rtc/rtc-tps6586x.c +++ b/drivers/rtc/rtc-tps6586x.c @@ -273,6 +273,8 @@ static int tps6586x_rtc_probe(struct platform_device *pdev) return ret; } + device_init_wakeup(&pdev->dev, 1); + platform_set_drvdata(pdev, rtc); rtc->rtc = devm_rtc_device_register(&pdev->dev, dev_name(&pdev->dev), &tps6586x_rtc_ops, THIS_MODULE); @@ -292,7 +294,6 @@ static int tps6586x_rtc_probe(struct platform_device *pdev) goto fail_rtc_register; } disable_irq(rtc->irq); - device_set_wakeup_capable(&pdev->dev, 1); return 0; fail_rtc_register: -- cgit v0.10.2 From ebf8d6c8630bfd3e24683306599cb953c9a2842c Mon Sep 17 00:00:00 2001 From: Derek Basehore Date: Wed, 12 Jun 2013 14:04:45 -0700 Subject: drivers/rtc/rtc-cmos.c: fix accidentally enabling rtc channel During resume, we call hpet_rtc_timer_init after masking an irq bit in hpet. This will cause the call to hpet_disable_rtc_channel to be undone if RTC_AIE is the only bit not masked. Allowing the cmos interrupt handler to run before resuming caused some issues where the timer for the alarm was not removed. This would cause other, later timers to not be cleared, so utilities such as hwclock would time out when waiting for the update interrupt. [akpm@linux-foundation.org: coding-style tweak] Signed-off-by: Derek Basehore Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index cc5bea9..f1cb706 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -854,6 +854,9 @@ static int cmos_resume(struct device *dev) } spin_lock_irq(&rtc_lock); + if (device_may_wakeup(dev)) + hpet_rtc_timer_init(); + do { CMOS_WRITE(tmp, RTC_CONTROL); hpet_set_rtc_irq_bit(tmp & RTC_IRQMASK); @@ -869,7 +872,6 @@ static int cmos_resume(struct device *dev) rtc_update_irq(cmos->rtc, 1, mask); tmp &= ~RTC_AIE; hpet_mask_rtc_irq_bit(RTC_AIE); - hpet_rtc_timer_init(); } while (mask & RTC_AIE); spin_unlock_irq(&rtc_lock); } -- cgit v0.10.2 From f000cfdde5de4fc15dead5ccf524359c07eadf2b Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Wed, 12 Jun 2013 14:04:46 -0700 Subject: audit: wait_for_auditd() should use TASK_UNINTERRUPTIBLE audit_log_start() does wait_for_auditd() in a loop until audit_backlog_wait_time passes or audit_skb_queue has a room. If signal_pending() is true this becomes a busy-wait loop, schedule() in TASK_INTERRUPTIBLE won't block. Thanks to Guy for fully investigating and explaining the problem. (akpm: that'll cause the system to lock up on a non-preemptible uniprocessor kernel) (Guy: "Our customer was in fact running a uniprocessor machine, and they reported a system hang.") Signed-off-by: Oleg Nesterov Reported-by: Guy Streeter Cc: Eric Paris Cc: Al Viro Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/audit.c b/kernel/audit.c index 21c7fa6..91e53d0 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -1056,7 +1056,7 @@ static inline void audit_get_stamp(struct audit_context *ctx, static void wait_for_auditd(unsigned long sleep_time) { DECLARE_WAITQUEUE(wait, current); - set_current_state(TASK_INTERRUPTIBLE); + set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&audit_backlog_wait, &wait); if (audit_backlog_limit && -- cgit v0.10.2 From 03f47e888daf56c8e9046c674719a0bcc644eed5 Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Wed, 12 Jun 2013 14:04:47 -0700 Subject: cciss: fix broken mutex usage in ioctl If a new logical drive is added and the CCISS_REGNEWD ioctl is invoked (as is normal with the Array Configuration Utility) the process will hang as below. It attempts to acquire the same mutex twice, once in do_ioctl() and once in cciss_unlocked_open(). The BKL was recursive, the mutex isn't. Linux version 3.10.0-rc2 (scameron@localhost.localdomain) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC) ) #1 SMP Fri May 24 14:32:12 CDT 2013 [...] acu D 0000000000000001 0 3246 3191 0x00000080 Call Trace: schedule+0x29/0x70 schedule_preempt_disabled+0xe/0x10 __mutex_lock_slowpath+0x17b/0x220 mutex_lock+0x2b/0x50 cciss_unlocked_open+0x2f/0x110 [cciss] __blkdev_get+0xd3/0x470 blkdev_get+0x5c/0x1e0 register_disk+0x182/0x1a0 add_disk+0x17c/0x310 cciss_add_disk+0x13a/0x170 [cciss] cciss_update_drive_info+0x39b/0x480 [cciss] rebuild_lun_table+0x258/0x370 [cciss] cciss_ioctl+0x34f/0x470 [cciss] do_ioctl+0x49/0x70 [cciss] __blkdev_driver_ioctl+0x28/0x30 blkdev_ioctl+0x200/0x7b0 block_ioctl+0x3c/0x40 do_vfs_ioctl+0x89/0x350 SyS_ioctl+0xa1/0xb0 system_call_fastpath+0x16/0x1b This mutex usage was added into the ioctl path when the big kernel lock was removed. As it turns out, these paths are all thread safe anyway (or can easily be made so) and we don't want ioctl() to be single threaded in any case. Signed-off-by: Stephen M. Cameron Cc: Jens Axboe Cc: Mike Miller Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 6374dc1..62b6c2c 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -168,8 +168,6 @@ static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id); static int cciss_open(struct block_device *bdev, fmode_t mode); static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode); static void cciss_release(struct gendisk *disk, fmode_t mode); -static int do_ioctl(struct block_device *bdev, fmode_t mode, - unsigned int cmd, unsigned long arg); static int cciss_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg); static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); @@ -235,7 +233,7 @@ static const struct block_device_operations cciss_fops = { .owner = THIS_MODULE, .open = cciss_unlocked_open, .release = cciss_release, - .ioctl = do_ioctl, + .ioctl = cciss_ioctl, .getgeo = cciss_getgeo, #ifdef CONFIG_COMPAT .compat_ioctl = cciss_compat_ioctl, @@ -1143,16 +1141,6 @@ static void cciss_release(struct gendisk *disk, fmode_t mode) mutex_unlock(&cciss_mutex); } -static int do_ioctl(struct block_device *bdev, fmode_t mode, - unsigned cmd, unsigned long arg) -{ - int ret; - mutex_lock(&cciss_mutex); - ret = cciss_ioctl(bdev, mode, cmd, arg); - mutex_unlock(&cciss_mutex); - return ret; -} - #ifdef CONFIG_COMPAT static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, @@ -1179,7 +1167,7 @@ static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, case CCISS_REGNEWD: case CCISS_RESCANDISK: case CCISS_GETLUNINFO: - return do_ioctl(bdev, mode, cmd, arg); + return cciss_ioctl(bdev, mode, cmd, arg); case CCISS_PASSTHRU32: return cciss_ioctl32_passthru(bdev, mode, cmd, arg); @@ -1219,7 +1207,7 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, if (err) return -EFAULT; - err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); + err = cciss_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); if (err) return err; err |= @@ -1261,7 +1249,7 @@ static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, if (err) return -EFAULT; - err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); + err = cciss_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); if (err) return err; err |= @@ -1311,11 +1299,14 @@ static int cciss_getpciinfo(ctlr_info_t *h, void __user *argp) static int cciss_getintinfo(ctlr_info_t *h, void __user *argp) { cciss_coalint_struct intinfo; + unsigned long flags; if (!argp) return -EINVAL; + spin_lock_irqsave(&h->lock, flags); intinfo.delay = readl(&h->cfgtable->HostWrite.CoalIntDelay); intinfo.count = readl(&h->cfgtable->HostWrite.CoalIntCount); + spin_unlock_irqrestore(&h->lock, flags); if (copy_to_user (argp, &intinfo, sizeof(cciss_coalint_struct))) return -EFAULT; @@ -1356,12 +1347,15 @@ static int cciss_setintinfo(ctlr_info_t *h, void __user *argp) static int cciss_getnodename(ctlr_info_t *h, void __user *argp) { NodeName_type NodeName; + unsigned long flags; int i; if (!argp) return -EINVAL; + spin_lock_irqsave(&h->lock, flags); for (i = 0; i < 16; i++) NodeName[i] = readb(&h->cfgtable->ServerName[i]); + spin_unlock_irqrestore(&h->lock, flags); if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) return -EFAULT; return 0; @@ -1398,10 +1392,13 @@ static int cciss_setnodename(ctlr_info_t *h, void __user *argp) static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp) { Heartbeat_type heartbeat; + unsigned long flags; if (!argp) return -EINVAL; + spin_lock_irqsave(&h->lock, flags); heartbeat = readl(&h->cfgtable->HeartBeat); + spin_unlock_irqrestore(&h->lock, flags); if (copy_to_user(argp, &heartbeat, sizeof(Heartbeat_type))) return -EFAULT; return 0; @@ -1410,10 +1407,13 @@ static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp) static int cciss_getbustypes(ctlr_info_t *h, void __user *argp) { BusTypes_type BusTypes; + unsigned long flags; if (!argp) return -EINVAL; + spin_lock_irqsave(&h->lock, flags); BusTypes = readl(&h->cfgtable->BusTypes); + spin_unlock_irqrestore(&h->lock, flags); if (copy_to_user(argp, &BusTypes, sizeof(BusTypes_type))) return -EFAULT; return 0; -- cgit v0.10.2 From 24b8256a1fb28d357bc6fa09184ba29b4255ba5c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 12 Jun 2013 14:04:48 -0700 Subject: drivers/rtc/rtc-twl.c: fix missing device_init_wakeup() when booted with device tree When booted in legacy mode device_init_wakeup() gets called by drivers/mfd/twl-core.c when the children are initialized. However, when booted using device tree, the children are created with of_platform_populate() instead add_children(). This means that the RTC driver will not have device_init_wakeup() set, and we need to call it from the driver probe like RTC drivers typically do. Without this we cannot test PM wake-up events on omaps for cases where there may not be any physical wake-up event. Signed-off-by: Tony Lindgren Reported-by: Kevin Hilman Cc: Alessandro Zummo Cc: Jingoo Han Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c index 8751a52..b2eab34 100644 --- a/drivers/rtc/rtc-twl.c +++ b/drivers/rtc/rtc-twl.c @@ -524,6 +524,7 @@ static int twl_rtc_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, rtc); + device_init_wakeup(&pdev->dev, 1); return 0; out2: -- cgit v0.10.2 From cbab0e4eec299e9059199ebe6daf48730be46d2b Mon Sep 17 00:00:00 2001 From: Rafael Aquini Date: Wed, 12 Jun 2013 14:04:49 -0700 Subject: swap: avoid read_swap_cache_async() race to deadlock while waiting on discard I/O completion read_swap_cache_async() can race against get_swap_page(), and stumble across a SWAP_HAS_CACHE entry in the swap map whose page wasn't brought into the swapcache yet. This transient swap_map state is expected to be transitory, but the actual placement of discard at scan_swap_map() inserts a wait for I/O completion thus making the thread at read_swap_cache_async() to loop around its -EEXIST case, while the other end at get_swap_page() is scheduled away at scan_swap_map(). This can leave the system deadlocked if the I/O completion happens to be waiting on the CPU waitqueue where read_swap_cache_async() is busy looping and !CONFIG_PREEMPT. This patch introduces a cond_resched() call to make the aforementioned read_swap_cache_async() busy loop condition to bail out when necessary, thus avoiding the subtle race window. Signed-off-by: Rafael Aquini Acked-by: Johannes Weiner Acked-by: KOSAKI Motohiro Acked-by: Hugh Dickins Cc: Shaohua Li Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/swap_state.c b/mm/swap_state.c index b3d40dc..f24ab0d 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -336,8 +336,24 @@ struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask, * Swap entry may have been freed since our caller observed it. */ err = swapcache_prepare(entry); - if (err == -EEXIST) { /* seems racy */ + if (err == -EEXIST) { radix_tree_preload_end(); + /* + * We might race against get_swap_page() and stumble + * across a SWAP_HAS_CACHE swap_map entry whose page + * has not been brought into the swapcache yet, while + * the other end is scheduled away waiting on discard + * I/O completion at scan_swap_map(). + * + * In order to avoid turning this transitory state + * into a permanent loop around this -EEXIST case + * if !CONFIG_PREEMPT and the I/O completion happens + * to be waiting on the CPU waitqueue where we are now + * busy looping, we just conditionally invoke the + * scheduler here, if there are some more important + * tasks to run. + */ + cond_resched(); continue; } if (err) { /* swp entry is obsolete ? */ -- cgit v0.10.2 From e099127169429c19544a8f55dd26937fddd5b1f4 Mon Sep 17 00:00:00 2001 From: Goldwyn Rodrigues Date: Wed, 12 Jun 2013 14:04:51 -0700 Subject: fs/ocfs2/namei.c: remove unecessary ERROR when removing non-empty directory While removing a non-empty directory, the kernel dumps a message: (rmdir,21743,1):ocfs2_unlink:953 ERROR: status = -39 Suppress the error message from being printed in the dmesg so users don't panic. Signed-off-by: Goldwyn Rodrigues Cc: Mark Fasheh Cc: Joel Becker Acked-by: Sunil Mushran Reviewed-by: Jie Liu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index b563351..b4a5cdf 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -947,7 +947,7 @@ leave: ocfs2_free_dir_lookup_result(&orphan_insert); ocfs2_free_dir_lookup_result(&lookup); - if (status) + if (status && (status != -ENOTEMPTY)) mlog_errno(status); return status; -- cgit v0.10.2 From 558c61e5579a81551c0d6c2deaed1da3c7bf714a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 12 Jun 2013 14:04:52 -0700 Subject: rtc-at91rm9200: add match-table compile guard The members of Atmel's at91sam9x5 family (9x5) have a broken RTC interrupt mask register (AT91_RTC_IMR). It does not reflect enabled interrupts but instead always returns zero. The kernel's rtc-at91rm9200 driver handles the RTC for the 9x5 family. Currently when the date/time is set, an interrupt is generated and this driver neglects to handle the interrupt. The kernel complains about the un-handled interrupt and disables it henceforth. This not only breaks the RTC function, but since that interrupt is shared (Atmel's SYS interrupt) then other things break as well (e.g. the debug port no longer accepts characters). Tested on the at91sam9g25. Bug confirmed by Atmel. This patch (of 5): Add missing match-table compile guard. Signed-off-by: Johan Hovold Acked-by: Nicolas Ferre Cc: Douglas Gilbert Cc: Jean-Christophe PLAGNIOL-VILLARD Cc: Ludovic Desroches Cc: Robert Nelson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 0eab77b..eeeb73f 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -383,11 +383,13 @@ static int at91_rtc_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(at91_rtc_pm_ops, at91_rtc_suspend, at91_rtc_resume); +#ifdef CONFIG_OF static const struct of_device_id at91_rtc_dt_ids[] = { { .compatible = "atmel,at91rm9200-rtc" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, at91_rtc_dt_ids); +#endif static struct platform_driver at91_rtc_driver = { .remove = __exit_p(at91_rtc_remove), -- cgit v0.10.2 From de645475913f677eb024b3d2bd52e264e8106497 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 12 Jun 2013 14:04:53 -0700 Subject: rtc-at91rm9200: add configuration support Add configuration support which can be used to implement SoC-specific workarounds for broken hardware. Signed-off-by: Johan Hovold Acked-by: Nicolas Ferre Cc: Douglas Gilbert Cc: Jean-Christophe PLAGNIOL-VILLARD Cc: Ludovic Desroches Cc: Robert Nelson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index eeeb73f..ab2024b 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -42,6 +42,10 @@ #define AT91_RTC_EPOCH 1900UL /* just like arch/arm/common/rtctime.c */ +struct at91_rtc_config { +}; + +static const struct at91_rtc_config *at91_rtc_config; static DECLARE_COMPLETION(at91_rtc_updated); static unsigned int at91_alarm_year = AT91_RTC_EPOCH; static void __iomem *at91_rtc_regs; @@ -250,6 +254,36 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) return IRQ_NONE; /* not handled */ } +static const struct at91_rtc_config at91rm9200_config = { +}; + +#ifdef CONFIG_OF +static const struct of_device_id at91_rtc_dt_ids[] = { + { + .compatible = "atmel,at91rm9200-rtc", + .data = &at91rm9200_config, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(of, at91_rtc_dt_ids); +#endif + +static const struct at91_rtc_config * +at91_rtc_get_config(struct platform_device *pdev) +{ + const struct of_device_id *match; + + if (pdev->dev.of_node) { + match = of_match_node(at91_rtc_dt_ids, pdev->dev.of_node); + if (!match) + return NULL; + return (const struct at91_rtc_config *)match->data; + } + + return &at91rm9200_config; +} + static const struct rtc_class_ops at91_rtc_ops = { .read_time = at91_rtc_readtime, .set_time = at91_rtc_settime, @@ -268,6 +302,10 @@ static int __init at91_rtc_probe(struct platform_device *pdev) struct resource *regs; int ret = 0; + at91_rtc_config = at91_rtc_get_config(pdev); + if (!at91_rtc_config) + return -ENODEV; + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!regs) { dev_err(&pdev->dev, "no mmio resource defined\n"); @@ -383,14 +421,6 @@ static int at91_rtc_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(at91_rtc_pm_ops, at91_rtc_suspend, at91_rtc_resume); -#ifdef CONFIG_OF -static const struct of_device_id at91_rtc_dt_ids[] = { - { .compatible = "atmel,at91rm9200-rtc" }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, at91_rtc_dt_ids); -#endif - static struct platform_driver at91_rtc_driver = { .remove = __exit_p(at91_rtc_remove), .driver = { -- cgit v0.10.2 From e304fcd075a0e97d0e538dd4408b95406b505f85 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 12 Jun 2013 14:04:55 -0700 Subject: rtc-at91rm9200: refactor interrupt-register handling Add accessors for the interrupt register. This will allow us to easily add a shadow interrupt-mask register to use on SoCs where the interrupt-mask register cannot be used. Signed-off-by: Johan Hovold Acked-by: Nicolas Ferre Cc: Douglas Gilbert Cc: Jean-Christophe PLAGNIOL-VILLARD Cc: Ludovic Desroches Cc: Robert Nelson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index ab2024b..9592d08 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -51,6 +51,21 @@ static unsigned int at91_alarm_year = AT91_RTC_EPOCH; static void __iomem *at91_rtc_regs; static int irq; +static void at91_rtc_write_ier(u32 mask) +{ + at91_rtc_write(AT91_RTC_IER, mask); +} + +static void at91_rtc_write_idr(u32 mask) +{ + at91_rtc_write(AT91_RTC_IDR, mask); +} + +static u32 at91_rtc_read_imr(void) +{ + return at91_rtc_read(AT91_RTC_IMR); +} + /* * Decode time/date into rtc_time structure */ @@ -114,9 +129,9 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm) cr = at91_rtc_read(AT91_RTC_CR); at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM); - at91_rtc_write(AT91_RTC_IER, AT91_RTC_ACKUPD); + at91_rtc_write_ier(AT91_RTC_ACKUPD); wait_for_completion(&at91_rtc_updated); /* wait for ACKUPD interrupt */ - at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD); + at91_rtc_write_idr(AT91_RTC_ACKUPD); at91_rtc_write(AT91_RTC_TIMR, bin2bcd(tm->tm_sec) << 0 @@ -148,7 +163,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm) tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year); tm->tm_year = at91_alarm_year - 1900; - alrm->enabled = (at91_rtc_read(AT91_RTC_IMR) & AT91_RTC_ALARM) + alrm->enabled = (at91_rtc_read_imr() & AT91_RTC_ALARM) ? 1 : 0; dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__, @@ -173,7 +188,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) tm.tm_min = alrm->time.tm_min; tm.tm_sec = alrm->time.tm_sec; - at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM); + at91_rtc_write_idr(AT91_RTC_ALARM); at91_rtc_write(AT91_RTC_TIMALR, bin2bcd(tm.tm_sec) << 0 | bin2bcd(tm.tm_min) << 8 @@ -186,7 +201,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) if (alrm->enabled) { at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM); - at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM); + at91_rtc_write_ier(AT91_RTC_ALARM); } dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__, @@ -202,9 +217,9 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) if (enabled) { at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM); - at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM); + at91_rtc_write_ier(AT91_RTC_ALARM); } else - at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM); + at91_rtc_write_idr(AT91_RTC_ALARM); return 0; } @@ -213,7 +228,7 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) */ static int at91_rtc_proc(struct device *dev, struct seq_file *seq) { - unsigned long imr = at91_rtc_read(AT91_RTC_IMR); + unsigned long imr = at91_rtc_read_imr(); seq_printf(seq, "update_IRQ\t: %s\n", (imr & AT91_RTC_ACKUPD) ? "yes" : "no"); @@ -233,7 +248,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) unsigned int rtsr; unsigned long events = 0; - rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_read(AT91_RTC_IMR); + rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_read_imr(); if (rtsr) { /* this interrupt is shared! Is it ours? */ if (rtsr & AT91_RTC_ALARM) events |= (RTC_AF | RTC_IRQF); @@ -328,7 +343,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev) at91_rtc_write(AT91_RTC_MR, 0); /* 24 hour mode */ /* Disable all interrupts */ - at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | + at91_rtc_write_idr(AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV); @@ -373,7 +388,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) struct rtc_device *rtc = platform_get_drvdata(pdev); /* Disable all interrupts */ - at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | + at91_rtc_write_idr(AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV); free_irq(irq, pdev); @@ -396,13 +411,13 @@ static int at91_rtc_suspend(struct device *dev) /* this IRQ is shared with DBGU and other hardware which isn't * necessarily doing PM like we are... */ - at91_rtc_imr = at91_rtc_read(AT91_RTC_IMR) + at91_rtc_imr = at91_rtc_read_imr() & (AT91_RTC_ALARM|AT91_RTC_SECEV); if (at91_rtc_imr) { if (device_may_wakeup(dev)) enable_irq_wake(irq); else - at91_rtc_write(AT91_RTC_IDR, at91_rtc_imr); + at91_rtc_write_idr(at91_rtc_imr); } return 0; } @@ -413,7 +428,7 @@ static int at91_rtc_resume(struct device *dev) if (device_may_wakeup(dev)) disable_irq_wake(irq); else - at91_rtc_write(AT91_RTC_IER, at91_rtc_imr); + at91_rtc_write_ier(at91_rtc_imr); } return 0; } -- cgit v0.10.2 From e9f08bbe3f97829975d2b59091ef557101c83f61 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 12 Jun 2013 14:04:56 -0700 Subject: rtc-at91rm9200: add shadow interrupt mask Add shadow interrupt-mask register which can be used on SoCs where the actual hardware register is broken. Note that some care needs to be taken to make sure the shadow mask corresponds to the actual hardware state. The added overhead is not an issue for the non-broken SoCs due to the relatively infrequent interrupt-mask updates. We do, however, only use the shadow mask value as a fall-back when it actually needed as there is still a theoretical possibility that the mask is incorrect (see the code for details). Signed-off-by: Johan Hovold Acked-by: Nicolas Ferre Cc: Douglas Gilbert Cc: Jean-Christophe PLAGNIOL-VILLARD Cc: Ludovic Desroches Cc: Robert Nelson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 9592d08..811a102 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -43,6 +44,7 @@ #define AT91_RTC_EPOCH 1900UL /* just like arch/arm/common/rtctime.c */ struct at91_rtc_config { + bool use_shadow_imr; }; static const struct at91_rtc_config *at91_rtc_config; @@ -50,20 +52,55 @@ static DECLARE_COMPLETION(at91_rtc_updated); static unsigned int at91_alarm_year = AT91_RTC_EPOCH; static void __iomem *at91_rtc_regs; static int irq; +static DEFINE_SPINLOCK(at91_rtc_lock); +static u32 at91_rtc_shadow_imr; static void at91_rtc_write_ier(u32 mask) { + unsigned long flags; + + spin_lock_irqsave(&at91_rtc_lock, flags); + at91_rtc_shadow_imr |= mask; at91_rtc_write(AT91_RTC_IER, mask); + spin_unlock_irqrestore(&at91_rtc_lock, flags); } static void at91_rtc_write_idr(u32 mask) { + unsigned long flags; + + spin_lock_irqsave(&at91_rtc_lock, flags); at91_rtc_write(AT91_RTC_IDR, mask); + /* + * Register read back (of any RTC-register) needed to make sure + * IDR-register write has reached the peripheral before updating + * shadow mask. + * + * Note that there is still a possibility that the mask is updated + * before interrupts have actually been disabled in hardware. The only + * way to be certain would be to poll the IMR-register, which is is + * the very register we are trying to emulate. The register read back + * is a reasonable heuristic. + */ + at91_rtc_read(AT91_RTC_SR); + at91_rtc_shadow_imr &= ~mask; + spin_unlock_irqrestore(&at91_rtc_lock, flags); } static u32 at91_rtc_read_imr(void) { - return at91_rtc_read(AT91_RTC_IMR); + unsigned long flags; + u32 mask; + + if (at91_rtc_config->use_shadow_imr) { + spin_lock_irqsave(&at91_rtc_lock, flags); + mask = at91_rtc_shadow_imr; + spin_unlock_irqrestore(&at91_rtc_lock, flags); + } else { + mask = at91_rtc_read(AT91_RTC_IMR); + } + + return mask; } /* -- cgit v0.10.2 From bba00e59107275faa615573c44eb0a513a1220a6 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 12 Jun 2013 14:04:57 -0700 Subject: rtc-at91rm9200: use shadow IMR on at91sam9x5 Add support for the at91sam9x5-family which must use the shadow interrupt mask due to a hardware issue (causing RTC_IMR to always be zero). Signed-off-by: Johan Hovold Acked-by: Nicolas Ferre Cc: Douglas Gilbert Cc: Jean-Christophe PLAGNIOL-VILLARD Cc: Ludovic Desroches Cc: Robert Nelson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt index 2a3feab..34c1505 100644 --- a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt +++ b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt @@ -1,7 +1,7 @@ Atmel AT91RM9200 Real Time Clock Required properties: -- compatible: should be: "atmel,at91rm9200-rtc" +- compatible: should be: "atmel,at91rm9200-rtc" or "atmel,at91sam9x5-rtc" - reg: physical base address of the controller and length of memory mapped region. - interrupts: rtc alarm/event interrupt diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 811a102..f296f3f 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -309,12 +309,19 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) static const struct at91_rtc_config at91rm9200_config = { }; +static const struct at91_rtc_config at91sam9x5_config = { + .use_shadow_imr = true, +}; + #ifdef CONFIG_OF static const struct of_device_id at91_rtc_dt_ids[] = { { .compatible = "atmel,at91rm9200-rtc", .data = &at91rm9200_config, }, { + .compatible = "atmel,at91sam9x5-rtc", + .data = &at91sam9x5_config, + }, { /* sentinel */ } }; -- cgit v0.10.2 From 4fcc712f5c48b1e32cdbf9b9cfba42a27b2e3160 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Wed, 12 Jun 2013 14:04:59 -0700 Subject: aio: fix io_destroy() regression by using call_rcu() There was a regression introduced by 36f5588905c1 ("aio: refcounting cleanup"), reported by Jens Axboe - the refcounting cleanup switched to using RCU in the shutdown path, but the synchronize_rcu() was done in the context of the io_destroy() syscall greatly increasing the time it could block. This patch switches it to call_rcu() and makes shutdown asynchronous (more asynchronous than it was originally; before the refcount changes io_destroy() would still wait on pending kiocbs). Note that there's a global quota on the max outstanding kiocbs, and that quota must be manipulated synchronously; otherwise io_setup() could return -EAGAIN when there isn't quota available, and userspace won't have any way of waiting until shutdown of the old kioctxs has finished (besides busy looping). So we release our quota before kioctx shutdown has finished, which should be fine since the quota never corresponded to anything real anyways. Signed-off-by: Kent Overstreet Cc: Zach Brown Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: Mark Fasheh Cc: Joel Becker Cc: Rusty Russell Reported-by: Jens Axboe Tested-by: Jens Axboe Cc: Asai Thambi S P Cc: Selvan Mani Cc: Sam Bradshaw Cc: Jeff Moyer Cc: Al Viro Signed-off-by: Benjamin LaHaise Tested-by: Benjamin LaHaise Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/fs/aio.c b/fs/aio.c index 7fe5bde..2bbcacf 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -141,9 +141,6 @@ static void aio_free_ring(struct kioctx *ctx) for (i = 0; i < ctx->nr_pages; i++) put_page(ctx->ring_pages[i]); - if (ctx->mmap_size) - vm_munmap(ctx->mmap_base, ctx->mmap_size); - if (ctx->ring_pages && ctx->ring_pages != ctx->internal_pages) kfree(ctx->ring_pages); } @@ -322,11 +319,6 @@ static void free_ioctx(struct kioctx *ctx) aio_free_ring(ctx); - spin_lock(&aio_nr_lock); - BUG_ON(aio_nr - ctx->max_reqs > aio_nr); - aio_nr -= ctx->max_reqs; - spin_unlock(&aio_nr_lock); - pr_debug("freeing %p\n", ctx); /* @@ -435,17 +427,24 @@ static void kill_ioctx(struct kioctx *ctx) { if (!atomic_xchg(&ctx->dead, 1)) { hlist_del_rcu(&ctx->list); - /* Between hlist_del_rcu() and dropping the initial ref */ - synchronize_rcu(); /* - * We can't punt to workqueue here because put_ioctx() -> - * free_ioctx() will unmap the ringbuffer, and that has to be - * done in the original process's context. kill_ioctx_rcu/work() - * exist for exit_aio(), as in that path free_ioctx() won't do - * the unmap. + * It'd be more correct to do this in free_ioctx(), after all + * the outstanding kiocbs have finished - but by then io_destroy + * has already returned, so io_setup() could potentially return + * -EAGAIN with no ioctxs actually in use (as far as userspace + * could tell). */ - kill_ioctx_work(&ctx->rcu_work); + spin_lock(&aio_nr_lock); + BUG_ON(aio_nr - ctx->max_reqs > aio_nr); + aio_nr -= ctx->max_reqs; + spin_unlock(&aio_nr_lock); + + if (ctx->mmap_size) + vm_munmap(ctx->mmap_base, ctx->mmap_size); + + /* Between hlist_del_rcu() and dropping the initial ref */ + call_rcu(&ctx->rcu_head, kill_ioctx_rcu); } } @@ -495,10 +494,7 @@ void exit_aio(struct mm_struct *mm) */ ctx->mmap_size = 0; - if (!atomic_xchg(&ctx->dead, 1)) { - hlist_del_rcu(&ctx->list); - call_rcu(&ctx->rcu_head, kill_ioctx_rcu); - } + kill_ioctx(ctx); } } -- cgit v0.10.2 From 282c4c0ecce9b9ac1b69acae32a4239441601405 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 12 Jun 2013 14:05:00 -0700 Subject: drivers/misc/sgi-gru/grufile.c: fix info leak in gru_get_config_info() The "info.fill" array isn't initialized so it can leak uninitialized stack information to user space. Signed-off-by: Dan Carpenter Acked-by: Robin Holt Acked-by: Dimitri Sivanich Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c index 44d273c..0535d1e 100644 --- a/drivers/misc/sgi-gru/grufile.c +++ b/drivers/misc/sgi-gru/grufile.c @@ -172,6 +172,7 @@ static long gru_get_config_info(unsigned long arg) nodesperblade = 2; else nodesperblade = 1; + memset(&info, 0, sizeof(info)); info.cpus = num_online_cpus(); info.nodes = num_online_nodes(); info.blades = info.nodes / nodesperblade; -- cgit v0.10.2 From 026b08147923142e925a7d0aaa39038055ae0156 Mon Sep 17 00:00:00 2001 From: Tomasz Stanislawski Date: Wed, 12 Jun 2013 14:05:02 -0700 Subject: mm/page_alloc.c: fix watermark check in __zone_watermark_ok() The watermark check consists of two sub-checks. The first one is: if (free_pages <= min + lowmem_reserve) return false; The check assures that there is minimal amount of RAM in the zone. If CMA is used then the free_pages is reduced by the number of free pages in CMA prior to the over-mentioned check. if (!(alloc_flags & ALLOC_CMA)) free_pages -= zone_page_state(z, NR_FREE_CMA_PAGES); This prevents the zone from being drained from pages available for non-movable allocations. The second check prevents the zone from getting too fragmented. for (o = 0; o < order; o++) { free_pages -= z->free_area[o].nr_free << o; min >>= 1; if (free_pages <= min) return false; } The field z->free_area[o].nr_free is equal to the number of free pages including free CMA pages. Therefore the CMA pages are subtracted twice. This may cause a false positive fail of __zone_watermark_ok() if the CMA area gets strongly fragmented. In such a case there are many 0-order free pages located in CMA. Those pages are subtracted twice therefore they will quickly drain free_pages during the check against fragmentation. The test fails even though there are many free non-cma pages in the zone. This patch fixes this issue by subtracting CMA pages only for a purpose of (free_pages <= min + lowmem_reserve) check. Laura said: We were observing allocation failures of higher order pages (order 5 = 128K typically) under tight memory conditions resulting in driver failure. The output from the page allocation failure showed plenty of free pages of the appropriate order/type/zone and mostly CMA pages in the lower orders. For full disclosure, we still observed some page allocation failures even after applying the patch but the number was drastically reduced and those failures were attributed to fragmentation/other system issues. Signed-off-by: Tomasz Stanislawski Signed-off-by: Kyungmin Park Tested-by: Laura Abbott Cc: Bartlomiej Zolnierkiewicz Acked-by: Minchan Kim Cc: Mel Gorman Tested-by: Marek Szyprowski Cc: [3.7+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 378a15b..c3edb62 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1628,6 +1628,7 @@ static bool __zone_watermark_ok(struct zone *z, int order, unsigned long mark, long min = mark; long lowmem_reserve = z->lowmem_reserve[classzone_idx]; int o; + long free_cma = 0; free_pages -= (1 << order) - 1; if (alloc_flags & ALLOC_HIGH) @@ -1637,9 +1638,10 @@ static bool __zone_watermark_ok(struct zone *z, int order, unsigned long mark, #ifdef CONFIG_CMA /* If allocation can't use CMA areas don't use free CMA pages */ if (!(alloc_flags & ALLOC_CMA)) - free_pages -= zone_page_state(z, NR_FREE_CMA_PAGES); + free_cma = zone_page_state(z, NR_FREE_CMA_PAGES); #endif - if (free_pages <= min + lowmem_reserve) + + if (free_pages - free_cma <= min + lowmem_reserve) return false; for (o = 0; o < order; o++) { /* At the next order, this order's pages become unavailable */ -- cgit v0.10.2 From 27749f2ff0717e115680922000839ad6a576eddf Mon Sep 17 00:00:00 2001 From: Xue jiufei Date: Wed, 12 Jun 2013 14:05:03 -0700 Subject: ocfs2: add missing lockres put in dlm_mig_lockres_handler dlm_mig_lockres_handler() is missing a dlm_lockres_put() on an error path. Signed-off-by: joyce Reviewed-by: shencanquan Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index b3fdd1a..e68588e 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -1408,6 +1408,7 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data, mres->lockname_len, mres->lockname); ret = -EFAULT; spin_unlock(&res->spinlock); + dlm_lockres_put(res); goto leave; } res->state |= DLM_LOCK_RES_MIGRATING; -- cgit v0.10.2 From 30dad30922ccc733cfdbfe232090cf674dc374dc Mon Sep 17 00:00:00 2001 From: Naoya Horiguchi Date: Wed, 12 Jun 2013 14:05:04 -0700 Subject: mm: migration: add migrate_entry_wait_huge() When we have a page fault for the address which is backed by a hugepage under migration, the kernel can't wait correctly and do busy looping on hugepage fault until the migration finishes. As a result, users who try to kick hugepage migration (via soft offlining, for example) occasionally experience long delay or soft lockup. This is because pte_offset_map_lock() can't get a correct migration entry or a correct page table lock for hugepage. This patch introduces migration_entry_wait_huge() to solve this. Signed-off-by: Naoya Horiguchi Reviewed-by: Rik van Riel Reviewed-by: Wanpeng Li Reviewed-by: Michal Hocko Cc: Mel Gorman Cc: Andi Kleen Cc: KOSAKI Motohiro Cc: [2.6.35+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/swapops.h b/include/linux/swapops.h index 47ead51..c5fd30d 100644 --- a/include/linux/swapops.h +++ b/include/linux/swapops.h @@ -137,6 +137,7 @@ static inline void make_migration_entry_read(swp_entry_t *entry) extern void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd, unsigned long address); +extern void migration_entry_wait_huge(struct mm_struct *mm, pte_t *pte); #else #define make_migration_entry(page, write) swp_entry(0, 0) @@ -148,6 +149,8 @@ static inline int is_migration_entry(swp_entry_t swp) static inline void make_migration_entry_read(swp_entry_t *entryp) { } static inline void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd, unsigned long address) { } +static inline void migration_entry_wait_huge(struct mm_struct *mm, + pte_t *pte) { } static inline int is_write_migration_entry(swp_entry_t entry) { return 0; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f8feeec..e2bfbf7 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2839,7 +2839,7 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, if (ptep) { entry = huge_ptep_get(ptep); if (unlikely(is_hugetlb_entry_migration(entry))) { - migration_entry_wait(mm, (pmd_t *)ptep, address); + migration_entry_wait_huge(mm, ptep); return 0; } else if (unlikely(is_hugetlb_entry_hwpoisoned(entry))) return VM_FAULT_HWPOISON_LARGE | diff --git a/mm/migrate.c b/mm/migrate.c index b1f5750..6f0c244 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -200,15 +200,14 @@ static void remove_migration_ptes(struct page *old, struct page *new) * get to the page and wait until migration is finished. * When we return from this function the fault will be retried. */ -void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd, - unsigned long address) +static void __migration_entry_wait(struct mm_struct *mm, pte_t *ptep, + spinlock_t *ptl) { - pte_t *ptep, pte; - spinlock_t *ptl; + pte_t pte; swp_entry_t entry; struct page *page; - ptep = pte_offset_map_lock(mm, pmd, address, &ptl); + spin_lock(ptl); pte = *ptep; if (!is_swap_pte(pte)) goto out; @@ -236,6 +235,20 @@ out: pte_unmap_unlock(ptep, ptl); } +void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd, + unsigned long address) +{ + spinlock_t *ptl = pte_lockptr(mm, pmd); + pte_t *ptep = pte_offset_map(pmd, address); + __migration_entry_wait(mm, ptep, ptl); +} + +void migration_entry_wait_huge(struct mm_struct *mm, pte_t *pte) +{ + spinlock_t *ptl = &(mm)->page_table_lock; + __migration_entry_wait(mm, pte, ptl); +} + #ifdef CONFIG_BLOCK /* Returns true if all buffers are successfully locked */ static bool buffer_migrate_lock_buffers(struct buffer_head *head, -- cgit v0.10.2 From 736f3203a06eafd0944103775a98584082744c6b Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Wed, 12 Jun 2013 14:05:07 -0700 Subject: kernel/audit_tree.c:audit_add_tree_rule(): protect `rule' from kill_rules() audit_add_tree_rule() must set 'rule->tree = NULL;' firstly, to protect the rule itself freed in kill_rules(). The reason is when it is killed, the 'rule' itself may have already released, we should not access it. one example: we add a rule to an inode, just at the same time the other task is deleting this inode. The work flow for adding a rule: audit_receive() -> (need audit_cmd_mutex lock) audit_receive_skb() -> audit_receive_msg() -> audit_receive_filter() -> audit_add_rule() -> audit_add_tree_rule() -> (need audit_filter_mutex lock) ... unlock audit_filter_mutex get_tree() ... iterate_mounts() -> (iterate all related inodes) tag_mount() -> tag_trunk() -> create_trunk() -> (assume it is 1st rule) fsnotify_add_mark() -> fsnotify_add_inode_mark() -> (add mark to inode->i_fsnotify_marks) ... get_tree(); (each inode will get one) ... lock audit_filter_mutex The work flow for deleting an inode: __destroy_inode() -> fsnotify_inode_delete() -> __fsnotify_inode_delete() -> fsnotify_clear_marks_by_inode() -> (get mark from inode->i_fsnotify_marks) fsnotify_destroy_mark() -> fsnotify_destroy_mark_locked() -> audit_tree_freeing_mark() -> evict_chunk() -> ... tree->goner = 1 ... kill_rules() -> (assume current->audit_context == NULL) call_rcu() -> (rule->tree != NULL) audit_free_rule_rcu() -> audit_free_rule() ... audit_schedule_prune() -> (assume current->audit_context == NULL) kthread_run() -> (need audit_cmd_mutex and audit_filter_mutex lock) prune_one() -> (delete it from prue_list) put_tree(); (match the original get_tree above) Signed-off-by: Chen Gang Cc: Eric Paris Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c index a291aa2..43c307d 100644 --- a/kernel/audit_tree.c +++ b/kernel/audit_tree.c @@ -658,6 +658,7 @@ int audit_add_tree_rule(struct audit_krule *rule) struct vfsmount *mnt; int err; + rule->tree = NULL; list_for_each_entry(tree, &tree_list, list) { if (!strcmp(seed->pathname, tree->pathname)) { put_tree(seed); -- cgit v0.10.2 From 7b57976da48e60b66fdbb9e97f5711b5382a49d7 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Wed, 12 Jun 2013 14:05:08 -0700 Subject: frontswap: fix incorrect zeroing and allocation size for frontswap_map The bitmap accessed by bitops must have enough size to hold the required numbers of bits rounded up to a multiple of BITS_PER_LONG. And the bitmap must not be zeroed by memset() if the number of bits cleared is not a multiple of BITS_PER_LONG. This fixes incorrect zeroing and allocation size for frontswap_map. The incorrect zeroing part doesn't cause any problem because frontswap_map is freed just after zeroing. But the wrongly calculated allocation size may cause the problem. For 32bit systems, the allocation size of frontswap_map is about twice as large as required size. For 64bit systems, the allocation size is smaller than requeired if the number of bits is not a multiple of BITS_PER_LONG. Signed-off-by: Akinobu Mita Cc: Konrad Rzeszutek Wilk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/frontswap.c b/mm/frontswap.c index 538367e..1b24bdc 100644 --- a/mm/frontswap.c +++ b/mm/frontswap.c @@ -319,7 +319,7 @@ void __frontswap_invalidate_area(unsigned type) return; frontswap_ops->invalidate_area(type); atomic_set(&sis->frontswap_pages, 0); - memset(sis->frontswap_map, 0, sis->max / sizeof(long)); + bitmap_zero(sis->frontswap_map, sis->max); } clear_bit(type, need_init); } diff --git a/mm/swapfile.c b/mm/swapfile.c index 6c340d9..746af55b 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -2116,7 +2116,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) } /* frontswap enabled? set up bit-per-page map for frontswap */ if (frontswap_enabled) - frontswap_map = vzalloc(maxpages / sizeof(long)); + frontswap_map = vzalloc(BITS_TO_LONGS(maxpages) * sizeof(long)); if (p->bdev) { if (blk_queue_nonrot(bdev_get_queue(p->bdev))) { -- cgit v0.10.2 From 89dc991f0f5272c307c746fdd57d0bff382b1ba2 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 12 Jun 2013 14:05:09 -0700 Subject: mm: memcontrol: fix lockless reclaim hierarchy iterator The lockless reclaim hierarchy iterator currently has a misplaced barrier that can lead to use-after-free crashes. The reclaim hierarchy iterator consist of a sequence count and a position pointer that are read and written locklessly, with memory barriers enforcing ordering. The write side sets the position pointer first, then updates the sequence count to "publish" the new position. Likewise, the read side must read the sequence count first, then the position. If the sequence count is up to date, it's guaranteed that the position is up to date as well: writer: reader: iter->position = position if iter->sequence == expected: smp_wmb() smp_rmb() iter->sequence = sequence position = iter->position However, the read side barrier is currently misplaced, which can lead to dereferencing stale position pointers that no longer point to valid memory. Fix this. Signed-off-by: Johannes Weiner Reported-by: Tejun Heo Reviewed-by: Tejun Heo Acked-by: Michal Hocko Cc: KAMEZAWA Hiroyuki Cc: Glauber Costa Cc: [3.10+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 931e38c..1947218 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1199,7 +1199,6 @@ struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root, mz = mem_cgroup_zoneinfo(root, nid, zid); iter = &mz->reclaim_iter[reclaim->priority]; - last_visited = iter->last_visited; if (prev && reclaim->generation != iter->generation) { iter->last_visited = NULL; goto out_unlock; @@ -1218,13 +1217,12 @@ struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root, * is alive. */ dead_count = atomic_read(&root->dead_count); - smp_rmb(); - last_visited = iter->last_visited; - if (last_visited) { - if ((dead_count != iter->last_dead_count) || - !css_tryget(&last_visited->css)) { + if (dead_count == iter->last_dead_count) { + smp_rmb(); + last_visited = iter->last_visited; + if (last_visited && + !css_tryget(&last_visited->css)) last_visited = NULL; - } } } -- cgit v0.10.2 From c2853c8df57f49620d26f317d7d43347c29bfc2e Mon Sep 17 00:00:00 2001 From: Alex Shi Date: Wed, 12 Jun 2013 14:05:10 -0700 Subject: include/linux/math64.h: add div64_ul() There is div64_long() to handle the s64/long division, but no mocro do u64/ul division. It is necessary in some scenarios, so add this function. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Alex Shi Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/math64.h b/include/linux/math64.h index b8ba855..2913b86 100644 --- a/include/linux/math64.h +++ b/include/linux/math64.h @@ -6,7 +6,8 @@ #if BITS_PER_LONG == 64 -#define div64_long(x,y) div64_s64((x),(y)) +#define div64_long(x, y) div64_s64((x), (y)) +#define div64_ul(x, y) div64_u64((x), (y)) /** * div_u64_rem - unsigned 64bit divide with 32bit divisor with remainder @@ -47,7 +48,8 @@ static inline s64 div64_s64(s64 dividend, s64 divisor) #elif BITS_PER_LONG == 32 -#define div64_long(x,y) div_s64((x),(y)) +#define div64_long(x, y) div_s64((x), (y)) +#define div64_ul(x, y) div_u64((x), (y)) #ifndef div_u64_rem static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) -- cgit v0.10.2 From 6b6204ee92adb53bfd6a77cb5679282ec3820c4b Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 9 May 2013 09:48:30 +1000 Subject: md: md_stop_writes() should always freeze recovery. __md_stop_writes() will currently sometimes freeze recovery. So any caller must be ready for that to happen, and indeed they are. However if __md_stop_writes() doesn't freeze_recovery, then a recovery could start before mddev_suspend() is called, which could be awkward. This can particularly cause problems or dm-raid. So change __md_stop_writes() to always freeze recovery. This is safe and more predicatable. Reported-by: Brassow Jonathan Tested-by: Brassow Jonathan Signed-off-by: NeilBrown diff --git a/drivers/md/md.c b/drivers/md/md.c index 4c74424..3e2acfa 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5277,8 +5277,8 @@ static void md_clean(struct mddev *mddev) static void __md_stop_writes(struct mddev *mddev) { + set_bit(MD_RECOVERY_FROZEN, &mddev->recovery); if (mddev->sync_thread) { - set_bit(MD_RECOVERY_FROZEN, &mddev->recovery); set_bit(MD_RECOVERY_INTR, &mddev->recovery); md_reap_sync_thread(mddev); } -- cgit v0.10.2 From 3056e3aec8d8ba61a0710fb78b2d562600aa2ea7 Mon Sep 17 00:00:00 2001 From: Alex Lyakas Date: Tue, 4 Jun 2013 20:42:21 +0300 Subject: md/raid1: consider WRITE as successful only if at least one non-Faulty and non-rebuilding drive completed it. Without that fix, the following scenario could happen: - RAID1 with drives A and B; drive B was freshly-added and is rebuilding - Drive A fails - WRITE request arrives to the array. It is failed by drive A, so r1_bio is marked as R1BIO_WriteError, but the rebuilding drive B succeeds in writing it, so the same r1_bio is marked as R1BIO_Uptodate. - r1_bio arrives to handle_write_finished, badblocks are disabled, md_error()->error() does nothing because we don't fail the last drive of raid1 - raid_end_bio_io() calls call_bio_endio() - As a result, in call_bio_endio(): if (!test_bit(R1BIO_Uptodate, &r1_bio->state)) clear_bit(BIO_UPTODATE, &bio->bi_flags); this code doesn't clear the BIO_UPTODATE flag, and the whole master WRITE succeeds, back to the upper layer. So we returned success to the upper layer, even though we had written the data onto the rebuilding drive only. But when we want to read the data back, we would not read from the rebuilding drive, so this data is lost. [neilb - applied identical change to raid10 as well] This bug can result in lost data, so it is suitable for any -stable kernel. Cc: stable@vger.kernel.org Signed-off-by: Alex Lyakas Signed-off-by: NeilBrown diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 851023e..f2db7a9 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -427,7 +427,17 @@ static void raid1_end_write_request(struct bio *bio, int error) r1_bio->bios[mirror] = NULL; to_put = bio; - set_bit(R1BIO_Uptodate, &r1_bio->state); + /* + * Do not set R1BIO_Uptodate if the current device is + * rebuilding or Faulty. This is because we cannot use + * such device for properly reading the data back (we could + * potentially use it, if the current write would have felt + * before rdev->recovery_offset, but for simplicity we don't + * check this here. + */ + if (test_bit(In_sync, &conf->mirrors[mirror].rdev->flags) && + !test_bit(Faulty, &conf->mirrors[mirror].rdev->flags)) + set_bit(R1BIO_Uptodate, &r1_bio->state); /* Maybe we can clear some bad blocks. */ if (is_badblock(conf->mirrors[mirror].rdev, diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 018741b..8000ee2 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -490,7 +490,17 @@ static void raid10_end_write_request(struct bio *bio, int error) sector_t first_bad; int bad_sectors; - set_bit(R10BIO_Uptodate, &r10_bio->state); + /* + * Do not set R10BIO_Uptodate if the current device is + * rebuilding or Faulty. This is because we cannot use + * such device for properly reading the data back (we could + * potentially use it, if the current write would have felt + * before rdev->recovery_offset, but for simplicity we don't + * check this here. + */ + if (test_bit(In_sync, &rdev->flags) && + !test_bit(Faulty, &rdev->flags)) + set_bit(R10BIO_Uptodate, &r10_bio->state); /* Maybe we can clear some bad blocks. */ if (is_badblock(rdev, -- cgit v0.10.2 From e2d59925221cd562e07fee38ec8839f7209ae603 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 12 Jun 2013 11:01:22 +1000 Subject: md/raid1,raid10: use freeze_array in place of raise_barrier in various places. Various places in raid1 and raid10 are calling raise_barrier when they really should call freeze_array. The former is only intended to be called from "make_request". The later has extra checks for 'nr_queued' and makes a call to flush_pending_writes(), so it is safe to call it from within the management thread. Using raise_barrier will sometimes deadlock. Using freeze_array should not. As 'freeze_array' currently expects one request to be pending (in handle_read_error - the only previous caller), we need to pass it the number of pending requests (extra) to ignore. The deadlock was made particularly noticeable by commits 050b66152f87c7 (raid10) and 6b740b8d79252f13 (raid1) which appeared in 3.4, so the fix is appropriate for any -stable kernel since then. This patch probably won't apply directly to some early kernels and will need to be applied by hand. Cc: stable@vger.kernel.org Reported-by: Alexander Lyakas Signed-off-by: NeilBrown diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index f2db7a9..5208e9d 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -890,17 +890,17 @@ static void allow_barrier(struct r1conf *conf) wake_up(&conf->wait_barrier); } -static void freeze_array(struct r1conf *conf) +static void freeze_array(struct r1conf *conf, int extra) { /* stop syncio and normal IO and wait for everything to * go quite. * We increment barrier and nr_waiting, and then - * wait until nr_pending match nr_queued+1 + * wait until nr_pending match nr_queued+extra * This is called in the context of one normal IO request * that has failed. Thus any sync request that might be pending * will be blocked by nr_pending, and we need to wait for * pending IO requests to complete or be queued for re-try. - * Thus the number queued (nr_queued) plus this request (1) + * Thus the number queued (nr_queued) plus this request (extra) * must match the number of pending IOs (nr_pending) before * we continue. */ @@ -908,7 +908,7 @@ static void freeze_array(struct r1conf *conf) conf->barrier++; conf->nr_waiting++; wait_event_lock_irq_cmd(conf->wait_barrier, - conf->nr_pending == conf->nr_queued+1, + conf->nr_pending == conf->nr_queued+extra, conf->resync_lock, flush_pending_writes(conf)); spin_unlock_irq(&conf->resync_lock); @@ -1568,8 +1568,8 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev) * we wait for all outstanding requests to complete. */ synchronize_sched(); - raise_barrier(conf); - lower_barrier(conf); + freeze_array(conf, 0); + unfreeze_array(conf); clear_bit(Unmerged, &rdev->flags); } md_integrity_add_rdev(rdev, mddev); @@ -1619,11 +1619,11 @@ static int raid1_remove_disk(struct mddev *mddev, struct md_rdev *rdev) */ struct md_rdev *repl = conf->mirrors[conf->raid_disks + number].rdev; - raise_barrier(conf); + freeze_array(conf, 0); clear_bit(Replacement, &repl->flags); p->rdev = repl; conf->mirrors[conf->raid_disks + number].rdev = NULL; - lower_barrier(conf); + unfreeze_array(conf); clear_bit(WantReplacement, &rdev->flags); } else clear_bit(WantReplacement, &rdev->flags); @@ -2240,7 +2240,7 @@ static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio) * frozen */ if (mddev->ro == 0) { - freeze_array(conf); + freeze_array(conf, 1); fix_read_error(conf, r1_bio->read_disk, r1_bio->sector, r1_bio->sectors); unfreeze_array(conf); @@ -3020,7 +3020,7 @@ static int raid1_reshape(struct mddev *mddev) return -ENOMEM; } - raise_barrier(conf); + freeze_array(conf, 0); /* ok, everything is stopped */ oldpool = conf->r1bio_pool; @@ -3051,7 +3051,7 @@ static int raid1_reshape(struct mddev *mddev) conf->raid_disks = mddev->raid_disks = raid_disks; mddev->delta_disks = 0; - lower_barrier(conf); + unfreeze_array(conf); set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); md_wakeup_thread(mddev->thread); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 8000ee2..aa9ed30 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1065,17 +1065,17 @@ static void allow_barrier(struct r10conf *conf) wake_up(&conf->wait_barrier); } -static void freeze_array(struct r10conf *conf) +static void freeze_array(struct r10conf *conf, int extra) { /* stop syncio and normal IO and wait for everything to * go quiet. * We increment barrier and nr_waiting, and then - * wait until nr_pending match nr_queued+1 + * wait until nr_pending match nr_queued+extra * This is called in the context of one normal IO request * that has failed. Thus any sync request that might be pending * will be blocked by nr_pending, and we need to wait for * pending IO requests to complete or be queued for re-try. - * Thus the number queued (nr_queued) plus this request (1) + * Thus the number queued (nr_queued) plus this request (extra) * must match the number of pending IOs (nr_pending) before * we continue. */ @@ -1083,7 +1083,7 @@ static void freeze_array(struct r10conf *conf) conf->barrier++; conf->nr_waiting++; wait_event_lock_irq_cmd(conf->wait_barrier, - conf->nr_pending == conf->nr_queued+1, + conf->nr_pending == conf->nr_queued+extra, conf->resync_lock, flush_pending_writes(conf)); @@ -1849,8 +1849,8 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) * we wait for all outstanding requests to complete. */ synchronize_sched(); - raise_barrier(conf, 0); - lower_barrier(conf); + freeze_array(conf, 0); + unfreeze_array(conf); clear_bit(Unmerged, &rdev->flags); } md_integrity_add_rdev(rdev, mddev); @@ -2646,7 +2646,7 @@ static void handle_read_error(struct mddev *mddev, struct r10bio *r10_bio) r10_bio->devs[slot].bio = NULL; if (mddev->ro == 0) { - freeze_array(conf); + freeze_array(conf, 1); fix_read_error(conf, mddev, r10_bio); unfreeze_array(conf); } else -- cgit v0.10.2 From 5026d7a9b2f3eb1f9bda66c18ac6bc3036ec9020 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Wed, 12 Jun 2013 07:37:43 -0700 Subject: md/raid1,5,10: Disable WRITE SAME until a recovery strategy is in place There are cases where the kernel will believe that the WRITE SAME command is supported by a block device which does not, in fact, support WRITE SAME. This currently happens for SATA drivers behind a SAS controller, but there are probably a hundred other ways that can happen, including drive firmware bugs. After receiving an error for WRITE SAME the block layer will retry the request as a plain write of zeroes, but mdraid will consider the failure as fatal and consider the drive failed. This has the effect that all the mirrors containing a specific set of data are each offlined in very rapid succession resulting in data loss. However, just bouncing the request back up to the block layer isn't ideal either, because the whole initial request-retry sequence should be inside the write bitmap fence, which probably means that md needs to do its own conversion of WRITE SAME to write zero. Until the failure scenario has been sorted out, disable WRITE SAME for raid1, raid5, and raid10. [neilb: added raid5] This patch is appropriate for any -stable since 3.7 when write_same support was added. Cc: stable@vger.kernel.org Signed-off-by: H. Peter Anvin Signed-off-by: NeilBrown diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 5208e9d..e02ad44 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2837,8 +2837,8 @@ static int run(struct mddev *mddev) return PTR_ERR(conf); if (mddev->queue) - blk_queue_max_write_same_sectors(mddev->queue, - mddev->chunk_sectors); + blk_queue_max_write_same_sectors(mddev->queue, 0); + rdev_for_each(rdev, mddev) { if (!mddev->gendisk) continue; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index aa9ed30..06c2cbe 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3651,8 +3651,7 @@ static int run(struct mddev *mddev) if (mddev->queue) { blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors); - blk_queue_max_write_same_sectors(mddev->queue, - mddev->chunk_sectors); + blk_queue_max_write_same_sectors(mddev->queue, 0); blk_queue_io_min(mddev->queue, chunk_size); if (conf->geo.raid_disks % conf->geo.near_copies) blk_queue_io_opt(mddev->queue, chunk_size * conf->geo.raid_disks); diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 4a7be45..26ee399 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5465,7 +5465,7 @@ static int run(struct mddev *mddev) if (mddev->major_version == 0 && mddev->minor_version > 90) rdev->recovery_offset = reshape_offset; - + if (rdev->recovery_offset < reshape_offset) { /* We need to check old and new layout */ if (!only_parity(rdev->raid_disk, @@ -5588,6 +5588,8 @@ static int run(struct mddev *mddev) */ mddev->queue->limits.discard_zeroes_data = 0; + blk_queue_max_write_same_sectors(mddev->queue, 0); + rdev_for_each(rdev, mddev) { disk_stack_limits(mddev->gendisk, rdev->bdev, rdev->data_offset << 9); -- cgit v0.10.2 From fe6510b5d6349a8999b83ef7c5671e5a561b803a Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Tue, 11 Jun 2013 22:25:22 +0300 Subject: crypto: aesni_intel - fix accessing of unaligned memory The new XTS code for aesni_intel uses input buffers directly as memory operands for pxor instructions, which causes crash if those buffers are not aligned to 16 bytes. Patch changes XTS code to handle unaligned memory correctly, by loading memory with movdqu instead. Reported-by: Dave Jones Tested-by: Dave Jones Signed-off-by: Jussi Kivilinna Signed-off-by: Herbert Xu diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S index 62fe22c..477e9d7 100644 --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -2681,56 +2681,68 @@ ENTRY(aesni_xts_crypt8) addq %rcx, KEYP movdqa IV, STATE1 - pxor 0x00(INP), STATE1 + movdqu 0x00(INP), INC + pxor INC, STATE1 movdqu IV, 0x00(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE2 - pxor 0x10(INP), STATE2 + movdqu 0x10(INP), INC + pxor INC, STATE2 movdqu IV, 0x10(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE3 - pxor 0x20(INP), STATE3 + movdqu 0x20(INP), INC + pxor INC, STATE3 movdqu IV, 0x20(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE4 - pxor 0x30(INP), STATE4 + movdqu 0x30(INP), INC + pxor INC, STATE4 movdqu IV, 0x30(OUTP) call *%r11 - pxor 0x00(OUTP), STATE1 + movdqu 0x00(OUTP), INC + pxor INC, STATE1 movdqu STATE1, 0x00(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE1 - pxor 0x40(INP), STATE1 + movdqu 0x40(INP), INC + pxor INC, STATE1 movdqu IV, 0x40(OUTP) - pxor 0x10(OUTP), STATE2 + movdqu 0x10(OUTP), INC + pxor INC, STATE2 movdqu STATE2, 0x10(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE2 - pxor 0x50(INP), STATE2 + movdqu 0x50(INP), INC + pxor INC, STATE2 movdqu IV, 0x50(OUTP) - pxor 0x20(OUTP), STATE3 + movdqu 0x20(OUTP), INC + pxor INC, STATE3 movdqu STATE3, 0x20(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE3 - pxor 0x60(INP), STATE3 + movdqu 0x60(INP), INC + pxor INC, STATE3 movdqu IV, 0x60(OUTP) - pxor 0x30(OUTP), STATE4 + movdqu 0x30(OUTP), INC + pxor INC, STATE4 movdqu STATE4, 0x30(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE4 - pxor 0x70(INP), STATE4 + movdqu 0x70(INP), INC + pxor INC, STATE4 movdqu IV, 0x70(OUTP) _aesni_gf128mul_x_ble() @@ -2738,16 +2750,20 @@ ENTRY(aesni_xts_crypt8) call *%r11 - pxor 0x40(OUTP), STATE1 + movdqu 0x40(OUTP), INC + pxor INC, STATE1 movdqu STATE1, 0x40(OUTP) - pxor 0x50(OUTP), STATE2 + movdqu 0x50(OUTP), INC + pxor INC, STATE2 movdqu STATE2, 0x50(OUTP) - pxor 0x60(OUTP), STATE3 + movdqu 0x60(OUTP), INC + pxor INC, STATE3 movdqu STATE3, 0x60(OUTP) - pxor 0x70(OUTP), STATE4 + movdqu 0x70(OUTP), INC + pxor INC, STATE4 movdqu STATE4, 0x70(OUTP) ret -- cgit v0.10.2 From 907985f48bc60818e291c631249f9bc84c83a06f Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Mon, 10 Jun 2013 15:18:00 -0400 Subject: slab: prevent warnings when allocating with __GFP_NOWARN Sasha Levin noticed that the warning introduced by commit 6286ae9 ("slab: Return NULL for oversized allocations) is being triggered: WARNING: CPU: 15 PID: 21519 at mm/slab_common.c:376 kmalloc_slab+0x2f/0xb0() can: request_module (can-proto-4) failed. mpoa: proc_mpc_write: could not parse '' Modules linked in: CPU: 15 PID: 21519 Comm: trinity-child15 Tainted: G W 3.10.0-rc4-next-20130607-sasha-00011-gcd78395-dirty #2 0000000000000009 ffff880020a95e30 ffffffff83ff4041 0000000000000000 ffff880020a95e68 ffffffff8111fe12 fffffffffffffff0 00000000000082d0 0000000000080000 0000000000080000 0000000001400000 ffff880020a95e78 Call Trace: [] dump_stack+0x4e/0x82 [] warn_slowpath_common+0x82/0xb0 [] warn_slowpath_null+0x15/0x20 [] kmalloc_slab+0x2f/0xb0 [] __kmalloc+0x24/0x4b0 [] ? security_capable+0x13/0x20 [] ? pipe_fcntl+0x107/0x210 [] pipe_fcntl+0x107/0x210 [] ? fget_raw_light+0x130/0x3f0 [] SyS_fcntl+0x60b/0x6a0 [] tracesys+0xe1/0xe6 Andrew Morton writes: __GFP_NOWARN is frequently used by kernel code to probe for "how big an allocation can I get". That's a bit lame, but it's used on slow paths and is pretty simple. However, SLAB would still spew a warning when a big allocation happens if the __GFP_NOWARN flag is _not_ set to expose kernel bugs. Signed-off-by: Sasha Levin [ penberg@kernel.org: improve changelog ] Signed-off-by: Pekka Enberg diff --git a/mm/slab_common.c b/mm/slab_common.c index ff3218a..2d41450 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -373,8 +373,10 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags) { int index; - if (WARN_ON_ONCE(size > KMALLOC_MAX_SIZE)) + if (size > KMALLOC_MAX_SIZE) { + WARN_ON_ONCE(!(flags & __GFP_NOWARN)); return NULL; + } if (size <= 192) { if (!size) -- cgit v0.10.2 From 99ffc3e74fb0d9d321d2f19c6021e0dbaff2f4b2 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 13 Jun 2013 10:07:29 +0300 Subject: macvlan: don't touch promisc without passthrough commit df8ef8f3aaa6692970a436204c4429210addb23a "macvlan: add FDB bridge ops and macvlan flags" added a way to control NOPROMISC macvlan flag through netlink. However, with a non passthrough device we never set promisc on open, even if NOPROMISC is off. As a result: If userspace clears NOPROMISC on open, then does not clear it on a netlink command, promisc counter is not decremented on stop and there will be no way to clear it once macvlan is detached. If userspace does not clear NOPROMISC on open, then sets NOPROMISC on a netlink command, promisc counter will be decremented from 0 and overflow to fffffffff with no way to clear promisc. To fix, simply ignore NOPROMISC flag in a netlink command for non-passthrough devices, same as we do at open/close. Since we touch this code anyway - check dev_set_promiscuity return code and pass it to users (though an error here is unlikely). Cc: "David S. Miller" Reviewed-by: John Fastabend Signed-off-by: Michael S. Tsirkin Signed-off-by: David S. Miller diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 1c502bb..6e91931 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -853,18 +853,24 @@ static int macvlan_changelink(struct net_device *dev, struct nlattr *tb[], struct nlattr *data[]) { struct macvlan_dev *vlan = netdev_priv(dev); - if (data && data[IFLA_MACVLAN_MODE]) - vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); + if (data && data[IFLA_MACVLAN_FLAGS]) { __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC; - - if (promisc && (flags & MACVLAN_FLAG_NOPROMISC)) - dev_set_promiscuity(vlan->lowerdev, -1); - else if (promisc && !(flags & MACVLAN_FLAG_NOPROMISC)) - dev_set_promiscuity(vlan->lowerdev, 1); + if (vlan->port->passthru && promisc) { + int err; + + if (flags & MACVLAN_FLAG_NOPROMISC) + err = dev_set_promiscuity(vlan->lowerdev, -1); + else + err = dev_set_promiscuity(vlan->lowerdev, 1); + if (err < 0) + return err; + } vlan->flags = flags; } + if (data && data[IFLA_MACVLAN_MODE]) + vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]); return 0; } -- cgit v0.10.2 From 94f950c4060cd9b1989c565284beb159b9705a50 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Tue, 11 Jun 2013 11:00:34 +0100 Subject: xen-netback: don't de-reference vif pointer after having called xenvif_put() When putting vif-s on the rx notify list, calling xenvif_put() must be deferred until after the removal from the list and the issuing of the notification, as both operations dereference the pointer. Changing this got me to notice that the "irq" variable was effectively unused (and was of too narrow type anyway). Signed-off-by: Jan Beulich Acked-by: Ian Campbell Signed-off-by: David S. Miller diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 37984e6..8c20935 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -662,7 +662,7 @@ static void xen_netbk_rx_action(struct xen_netbk *netbk) { struct xenvif *vif = NULL, *tmp; s8 status; - u16 irq, flags; + u16 flags; struct xen_netif_rx_response *resp; struct sk_buff_head rxq; struct sk_buff *skb; @@ -771,13 +771,13 @@ static void xen_netbk_rx_action(struct xen_netbk *netbk) sco->meta_slots_used); RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&vif->rx, ret); - irq = vif->irq; - if (ret && list_empty(&vif->notify_list)) - list_add_tail(&vif->notify_list, ¬ify); xenvif_notify_tx_completion(vif); - xenvif_put(vif); + if (ret && list_empty(&vif->notify_list)) + list_add_tail(&vif->notify_list, ¬ify); + else + xenvif_put(vif); npo.meta_cons += sco->meta_slots_used; dev_kfree_skb(skb); } @@ -785,6 +785,7 @@ static void xen_netbk_rx_action(struct xen_netbk *netbk) list_for_each_entry_safe(vif, tmp, ¬ify, notify_list) { notify_remote_via_irq(vif->irq); list_del_init(&vif->notify_list); + xenvif_put(vif); } /* More work to do? */ -- cgit v0.10.2 From 0c5fed09ab0feedd43c362b1c7fff67fdbf9548f Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Tue, 11 Jun 2013 17:18:22 +0530 Subject: be2net: Fix 32-bit DMA Mask handling Fix to set the coherent DMA mask only if dma_set_mask() succeeded, and to error out if either fails. Signed-off-by: Somnath Kotur Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 8bc1b21..a0b4be5 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -4262,6 +4262,9 @@ static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id) netdev->features |= NETIF_F_HIGHDMA; } else { status = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (!status) + status = dma_set_coherent_mask(&pdev->dev, + DMA_BIT_MASK(32)); if (status) { dev_err(&pdev->dev, "Could not set PCI DMA Mask\n"); goto free_netdev; -- cgit v0.10.2 From 631f24a2febb228f82604dc5330091e8080cd8ae Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Wed, 12 Jun 2013 11:05:03 -0500 Subject: net: ethernet: stmicro: stmmac: Fix compile error when STMMAC_XMIT_DEBUG used drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function: stmmac_xmit drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1902:74: error: expected ) before __func__ Signed-off-by: Dinh Nguyen Cc: Giuseppe Cavallaro CC: David S. Miller Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 618446a..ee919ca 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1899,7 +1899,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) #ifdef STMMAC_XMIT_DEBUG if (netif_msg_pktdata(priv)) { - pr_info("%s: curr %d dirty=%d entry=%d, first=%p, nfrags=%d" + pr_info("%s: curr %d dirty=%d entry=%d, first=%p, nfrags=%d", __func__, (priv->cur_tx % txsize), (priv->dirty_tx % txsize), entry, first, nfrags); if (priv->extend_desc) -- cgit v0.10.2 From 2dc85bf323515e59e15dfa858d1472bb25cad0fe Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Wed, 12 Jun 2013 16:02:27 +0200 Subject: packet: packet_getname_spkt: make sure string is always 0-terminated uaddr->sa_data is exactly of size 14, which is hard-coded here and passed as a size argument to strncpy(). A device name can be of size IFNAMSIZ (== 16), meaning we might leave the destination string unterminated. Thus, use strlcpy() and also sizeof() while we're at it. We need to memset the data area beforehand, since strlcpy does not padd the remaining buffer with zeroes for user space, so that we do not possibly leak anything. Signed-off-by: Daniel Borkmann Signed-off-by: David S. Miller diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 8ec1bca..20a1bd0 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2851,12 +2851,11 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr, return -EOPNOTSUPP; uaddr->sa_family = AF_PACKET; + memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data)); rcu_read_lock(); dev = dev_get_by_index_rcu(sock_net(sk), pkt_sk(sk)->ifindex); if (dev) - strncpy(uaddr->sa_data, dev->name, 14); - else - memset(uaddr->sa_data, 0, 14); + strlcpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data)); rcu_read_unlock(); *uaddr_len = sizeof(*uaddr); -- cgit v0.10.2 From b8fad459f9cc8417b74f71c6c229eef7412163d1 Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Wed, 12 Jun 2013 00:07:01 +0200 Subject: bonding: reset master mac on first enslave failure If the bond device is supposed to get the first slave's MAC address and the first enslavement fails then we need to reset the master's MAC otherwise it will stay the same as the failed slave device. We do it after err_undo_flags since that is the first place where the MAC can be changed and we check if it should've been the first slave and if the bond's MAC was set to it because that err place is used by multiple locations prior to changing the master's MAC address. Signed-off-by: Nikolay Aleksandrov Signed-off-by: Jay Vosburgh Signed-off-by: David S. Miller diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 29b846c..473633a 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1957,6 +1957,10 @@ err_free: err_undo_flags: bond_compute_features(bond); + /* Enslave of first slave has failed and we need to fix master's mac */ + if (bond->slave_cnt == 0 && + ether_addr_equal(bond_dev->dev_addr, slave_dev->dev_addr)) + eth_hw_addr_random(bond_dev); return res; } -- cgit v0.10.2 From 4f5474e7fd68988cb11373fc698bf10b35b49e31 Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Wed, 12 Jun 2013 00:07:02 +0200 Subject: bonding: fix igmp_retrans type and two related races First the type of igmp_retrans (which is the actual counter of igmp_resend parameter) is changed to u8 to be able to store values up to 255 (as per documentation). There are two races that were hidden there and which are easy to trigger after the previous fix, the first is between bond_resend_igmp_join_requests and bond_change_active_slave where igmp_retrans is set and can be altered by the periodic. The second race condition is between multiple running instances of the periodic (upon execution it can be scheduled again for immediate execution which can cause the counter to go < 0 which in the unsigned case leads to unnecessary igmp retransmissions). Since in bond_change_active_slave bond->lock is held for reading and curr_slave_lock for writing, we use curr_slave_lock for mutual exclusion. We can't drop them as there're cases where RTNL is not held when bond_change_active_slave is called. RCU is unlocked in bond_resend_igmp_join_requests before getting curr_slave_lock since we don't need it there and it's pointless to delay. The decrement is moved inside the "if" block because if we decrement unconditionally there's still a possibility for a race condition although it is much more difficult to hit (many changes have to happen in a very short period in order to trigger) which in the case of 3 parallel running instances of this function and igmp_retrans == 1 (with check bond->igmp_retrans-- > 1) is: f1 passes, doesn't re-schedule, but decrements - igmp_retrans = 0 f2 then passes, doesn't re-schedule, but decrements - igmp_retrans = 255 f3 does the unnecessary retransmissions. Signed-off-by: Nikolay Aleksandrov Signed-off-by: Jay Vosburgh Signed-off-by: David S. Miller diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 473633a..02d9ae7 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -764,8 +764,8 @@ static void bond_resend_igmp_join_requests(struct bonding *bond) struct net_device *bond_dev, *vlan_dev, *upper_dev; struct vlan_entry *vlan; - rcu_read_lock(); read_lock(&bond->lock); + rcu_read_lock(); bond_dev = bond->dev; @@ -787,12 +787,19 @@ static void bond_resend_igmp_join_requests(struct bonding *bond) if (vlan_dev) __bond_resend_igmp_join_requests(vlan_dev); } + rcu_read_unlock(); - if (--bond->igmp_retrans > 0) + /* We use curr_slave_lock to protect against concurrent access to + * igmp_retrans from multiple running instances of this function and + * bond_change_active_slave + */ + write_lock_bh(&bond->curr_slave_lock); + if (bond->igmp_retrans > 1) { + bond->igmp_retrans--; queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5); - + } + write_unlock_bh(&bond->curr_slave_lock); read_unlock(&bond->lock); - rcu_read_unlock(); } static void bond_resend_igmp_join_requests_delayed(struct work_struct *work) diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index 2baec24..f989e15 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -225,7 +225,7 @@ struct bonding { rwlock_t curr_slave_lock; u8 send_peer_notif; s8 setup_by_slave; - s8 igmp_retrans; + u8 igmp_retrans; #ifdef CONFIG_PROC_FS struct proc_dir_entry *proc_entry; char proc_file_name[IFNAMSIZ]; -- cgit v0.10.2 From 55b92b7a11690bc377b5d373872a6b650ae88e64 Mon Sep 17 00:00:00 2001 From: Guillaume Nault Date: Wed, 12 Jun 2013 16:07:23 +0200 Subject: l2tp: Fix PPP header erasure and memory leak Copy user data after PPP framing header. This prevents erasure of the added PPP header and avoids leaking two bytes of uninitialised memory at the end of skb's data buffer. Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 637a341..681c626 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -346,12 +346,12 @@ static int pppol2tp_sendmsg(struct kiocb *iocb, struct socket *sock, struct msgh skb_put(skb, 2); /* Copy user data into skb */ - error = memcpy_fromiovec(skb->data, m->msg_iov, total_len); + error = memcpy_fromiovec(skb_put(skb, total_len), m->msg_iov, + total_len); if (error < 0) { kfree_skb(skb); goto error_put_sess_tun; } - skb_put(skb, total_len); l2tp_xmit_skb(session, skb, session->hdr_len); -- cgit v0.10.2 From a6f79d0f26704214b5b702bbac525cb72997f984 Mon Sep 17 00:00:00 2001 From: Guillaume Nault Date: Wed, 12 Jun 2013 16:07:36 +0200 Subject: l2tp: Fix sendmsg() return value PPPoL2TP sockets should comply with the standard send*() return values (i.e. return number of bytes sent instead of 0 upon success). Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 681c626..8dec687 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -358,7 +358,7 @@ static int pppol2tp_sendmsg(struct kiocb *iocb, struct socket *sock, struct msgh sock_put(ps->tunnel_sock); sock_put(sk); - return error; + return total_len; error_put_sess_tun: sock_put(ps->tunnel_sock); -- cgit v0.10.2 From df465abfe06f7dc4f33f4a96d17f096e9e8ac917 Mon Sep 17 00:00:00 2001 From: Nithin Sujir Date: Wed, 12 Jun 2013 11:08:59 -0700 Subject: tg3: Wait for boot code to finish after power on Some systems that don't need wake-on-lan may choose to power down the chip on system standby. Upon resume, the power on causes the boot code to startup and initialize the hardware. On one new platform, this is causing the device to go into a bad state due to a race between the driver and boot code, once every several hundred resumes. The same race exists on open since we come up from a power on. This patch adds a wait for boot code signature at the beginning of tg3_init_hw() which is common to both cases. If there has not been a power-off or the boot code has already completed, the signature will be present and poll_fw() returns immediately. Also return immediately if the device does not have firmware. Cc: stable@vger.kernel.org Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 0f493c8..c777b90 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -1800,6 +1800,9 @@ static int tg3_poll_fw(struct tg3 *tp) int i; u32 val; + if (tg3_flag(tp, NO_FWARE_REPORTED)) + return 0; + if (tg3_flag(tp, IS_SSB_CORE)) { /* We don't use firmware. */ return 0; @@ -10404,6 +10407,13 @@ static int tg3_reset_hw(struct tg3 *tp, bool reset_phy) */ static int tg3_init_hw(struct tg3 *tp, bool reset_phy) { + /* Chip may have been just powered on. If so, the boot code may still + * be running initialization. Wait for it to finish to avoid races in + * accessing the hardware. + */ + tg3_enable_register_access(tp); + tg3_poll_fw(tp); + tg3_switch_clocks(tp); tw32(TG3PCI_MEM_WIN_BASE_ADDR, 0); -- cgit v0.10.2 From baafc77b32f647daa7c45825f7af8cdd55d00817 Mon Sep 17 00:00:00 2001 From: Saurabh Mohan Date: Mon, 10 Jun 2013 17:45:10 -0700 Subject: net/ipv4: ip_vti clear skb cb before tunneling. If users apply shaper to vti tunnel then it will cause a kernel crash. The problem seems to be due to the vti_tunnel_xmit function not clearing skb->opt field before passing the packet to xfrm tunneling code. Signed-off-by: Saurabh Mohan Acked-by: Stephen Hemminger Signed-off-by: David S. Miller diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c index 9d2bdb2..c118f6b 100644 --- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -361,8 +361,7 @@ static netdev_tx_t vti_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) tunnel->err_count = 0; } - IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED | - IPSKB_REROUTED); + memset(IPCB(skb), 0, sizeof(*IPCB(skb))); skb_dst_drop(skb); skb_dst_set(skb, &rt->dst); nf_reset(skb); -- cgit v0.10.2 From 5033ec3e3f923a371c28f0c3df45905a9dd9c457 Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Tue, 11 Jun 2013 15:32:04 +0530 Subject: drivers: net: davinci_mdio: moving mdio resume earlier than cpsw ethernet driver MDIO driver should resume before CPSW ethernet driver so that CPSW connect to the phy and start tx/rx ethernet packets, changing the suspend/resume apis with suspend_late/resume_early. Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c index b2275d1..74e56b3 100644 --- a/drivers/net/ethernet/ti/davinci_mdio.c +++ b/drivers/net/ethernet/ti/davinci_mdio.c @@ -476,8 +476,8 @@ static int davinci_mdio_resume(struct device *dev) } static const struct dev_pm_ops davinci_mdio_pm_ops = { - .suspend = davinci_mdio_suspend, - .resume = davinci_mdio_resume, + .suspend_late = davinci_mdio_suspend, + .resume_early = davinci_mdio_resume, }; static const struct of_device_id davinci_mdio_of_mtable[] = { -- cgit v0.10.2 From cc60ab0a8b5b62ea6b5cc1c6397adb5b4bd41271 Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Tue, 11 Jun 2013 15:32:05 +0530 Subject: drivers: net: davinci_mdio: restore mdio clk divider in mdio resume During suspend resume cycle all the register data is lost, so MDIO clock divier value gets reset. This patch restores the clock divider value. Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c index 74e56b3..c47f0db 100644 --- a/drivers/net/ethernet/ti/davinci_mdio.c +++ b/drivers/net/ethernet/ti/davinci_mdio.c @@ -459,15 +459,12 @@ static int davinci_mdio_suspend(struct device *dev) static int davinci_mdio_resume(struct device *dev) { struct davinci_mdio_data *data = dev_get_drvdata(dev); - u32 ctrl; pm_runtime_get_sync(data->dev); spin_lock(&data->lock); /* restart the scan state machine */ - ctrl = __raw_readl(&data->regs->control); - ctrl |= CONTROL_ENABLE; - __raw_writel(ctrl, &data->regs->control); + __davinci_mdio_reset(data); data->suspended = false; spin_unlock(&data->lock); -- cgit v0.10.2 From d3b6f6141831b6e2d414edea6cc7af5b9bc6fac2 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 7 Jun 2013 13:26:05 -0700 Subject: ip_tunnel: remove __net_init/exit from exported functions If CONFIG_NET_NS is not set then __net_init is the same as __init and __net_exit is the same as __exit. These functions will be removed from memory after the module loads or is removed. Functions that are exported for use by other functions should never be labeled for removal. Bug introduced by commit c54419321455631079c ("GRE: Refactor GRE tunneling code.") Reported-by: Steinar H. Gunderson Signed-off-by: Steven Rostedt Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h index 4b6f0b2..09b1360 100644 --- a/include/net/ip_tunnels.h +++ b/include/net/ip_tunnels.h @@ -95,10 +95,10 @@ struct ip_tunnel_net { int ip_tunnel_init(struct net_device *dev); void ip_tunnel_uninit(struct net_device *dev); void ip_tunnel_dellink(struct net_device *dev, struct list_head *head); -int __net_init ip_tunnel_init_net(struct net *net, int ip_tnl_net_id, - struct rtnl_link_ops *ops, char *devname); +int ip_tunnel_init_net(struct net *net, int ip_tnl_net_id, + struct rtnl_link_ops *ops, char *devname); -void __net_exit ip_tunnel_delete_net(struct ip_tunnel_net *itn); +void ip_tunnel_delete_net(struct ip_tunnel_net *itn); void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, const struct iphdr *tnl_params); diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index be2f8da..7fa8f08 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -853,7 +853,7 @@ void ip_tunnel_dellink(struct net_device *dev, struct list_head *head) } EXPORT_SYMBOL_GPL(ip_tunnel_dellink); -int __net_init ip_tunnel_init_net(struct net *net, int ip_tnl_net_id, +int ip_tunnel_init_net(struct net *net, int ip_tnl_net_id, struct rtnl_link_ops *ops, char *devname) { struct ip_tunnel_net *itn = net_generic(net, ip_tnl_net_id); @@ -899,7 +899,7 @@ static void ip_tunnel_destroy(struct ip_tunnel_net *itn, struct list_head *head) unregister_netdevice_queue(itn->fb_tunnel_dev, head); } -void __net_exit ip_tunnel_delete_net(struct ip_tunnel_net *itn) +void ip_tunnel_delete_net(struct ip_tunnel_net *itn) { LIST_HEAD(list); -- cgit v0.10.2 From dd019897358b815f7828dab90b51d51df4d3658d Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Thu, 13 Jun 2013 10:15:45 +0900 Subject: net: sh_eth: fix incorrect RX length error if R8A7740 This patch fixes an issue that the driver increments the "RX length error" on every buffer in sh_eth_rx() if the R8A7740. This patch also adds a description about the Receive Frame Status bits. Signed-off-by: Yoshihiro Shimoda Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index b4479b5..5e3982f 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1401,16 +1401,23 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status) desc_status = edmac_to_cpu(mdp, rxdesc->status); pkt_len = rxdesc->frame_length; -#if defined(CONFIG_ARCH_R8A7740) - desc_status >>= 16; -#endif - if (--boguscnt < 0) break; if (!(desc_status & RDFEND)) ndev->stats.rx_length_errors++; +#if defined(CONFIG_ARCH_R8A7740) + /* + * In case of almost all GETHER/ETHERs, the Receive Frame State + * (RFS) bits in the Receive Descriptor 0 are from bit 9 to + * bit 0. However, in case of the R8A7740's GETHER, the RFS + * bits are from bit 25 to bit 16. So, the driver needs right + * shifting by 16. + */ + desc_status >>= 16; +#endif + if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 | RD_RFS5 | RD_RFS6 | RD_RFS10)) { ndev->stats.rx_errors++; -- cgit v0.10.2 From 3a96d5cd7bdce45d5dded75c3a62d4fb98050280 Mon Sep 17 00:00:00 2001 From: Josh Durgin Date: Wed, 12 Jun 2013 19:15:06 -0700 Subject: rbd: use the correct length for format 2 object names Format 2 objects use 16 characters for the object name suffix to be able to express the full 64-bit range of object numbers. Format 1 images only use 12 characters for this. Using 12-character names for format 2 caused userspace and kernel rbd clients to read differently named objects, which made an image written by one client look empty to the other client. CC: stable@vger.kernel.org # 3.9+ Reported-by: Chris Dunlop Signed-off-by: Josh Durgin Reviewed-by: Sage Weil diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 3a897a5..cc7c60e 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1038,12 +1038,16 @@ static const char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset) char *name; u64 segment; int ret; + char *name_format; name = kmem_cache_alloc(rbd_segment_name_cache, GFP_NOIO); if (!name) return NULL; segment = offset >> rbd_dev->header.obj_order; - ret = snprintf(name, MAX_OBJ_NAME_SIZE + 1, "%s.%012llx", + name_format = "%s.%012llx"; + if (rbd_dev->image_format == 2) + name_format = "%s.%016llx"; + ret = snprintf(name, MAX_OBJ_NAME_SIZE + 1, name_format, rbd_dev->header.object_prefix, segment); if (ret < 0 || ret > MAX_OBJ_NAME_SIZE) { pr_err("error formatting segment name for #%llu (%d)\n", -- cgit v0.10.2 From b844db31874e3b1c3b86c65024ac7bed9f77ee42 Mon Sep 17 00:00:00 2001 From: Josh Triplett Date: Wed, 12 Jun 2013 17:26:37 -0700 Subject: turbostat: Increase output buffer size to accommodate C8-C10 On platforms with C8-C10 support, the additional C-states cause turbostat to overrun its output buffer of 128 bytes per CPU. Increase this to 256 bytes per CPU. [ As a bugfix, this should go into 3.10; however, since the C8-C10 support didn't go in until after 3.9, this need not go into any stable kernel. ] Signed-off-by: Josh Triplett Cc: Len Brown Cc: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 9e9d348..fe70207 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -2191,7 +2191,7 @@ int initialize_counters(int cpu_id) void allocate_output_buffer() { - output_buffer = calloc(1, (1 + topo.num_cpus) * 128); + output_buffer = calloc(1, (1 + topo.num_cpus) * 256); outp = output_buffer; if (outp == NULL) { perror("calloc"); -- cgit v0.10.2 From 300b962e5244a1ea010df7e88595faa0085b461d Mon Sep 17 00:00:00 2001 From: Anderson Lizardo Date: Sun, 2 Jun 2013 16:30:40 -0400 Subject: Bluetooth: Fix crash in l2cap_build_cmd() with small MTU If a too small MTU value is set with ioctl(HCISETACLMTU) or by a bogus controller, memory corruption happens due to a memcpy() call with negative length. Fix this crash on either incoming or outgoing connections with a MTU smaller than L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE: [ 46.885433] BUG: unable to handle kernel paging request at f56ad000 [ 46.888037] IP: [] memcpy+0x1d/0x40 [ 46.888037] *pdpt = 0000000000ac3001 *pde = 00000000373f8067 *pte = 80000000356ad060 [ 46.888037] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC [ 46.888037] Modules linked in: hci_vhci bluetooth virtio_balloon i2c_piix4 uhci_hcd usbcore usb_common [ 46.888037] CPU: 0 PID: 1044 Comm: kworker/u3:0 Not tainted 3.10.0-rc1+ #12 [ 46.888037] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 46.888037] Workqueue: hci0 hci_rx_work [bluetooth] [ 46.888037] task: f59b15b0 ti: f55c4000 task.ti: f55c4000 [ 46.888037] EIP: 0060:[] EFLAGS: 00010212 CPU: 0 [ 46.888037] EIP is at memcpy+0x1d/0x40 [ 46.888037] EAX: f56ac1c0 EBX: fffffff8 ECX: 3ffffc6e EDX: f55c5cf2 [ 46.888037] ESI: f55c6b32 EDI: f56ad000 EBP: f55c5c68 ESP: f55c5c5c [ 46.888037] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 46.888037] CR0: 8005003b CR2: f56ad000 CR3: 3557d000 CR4: 000006f0 [ 46.888037] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 46.888037] DR6: ffff0ff0 DR7: 00000400 [ 46.888037] Stack: [ 46.888037] fffffff8 00000010 00000003 f55c5cac f8c6a54c ffffffff f8c69eb2 00000000 [ 46.888037] f4783cdc f57f0070 f759c590 1001c580 00000003 0200000a 00000000 f5a88560 [ 46.888037] f5ba2600 f5a88560 00000041 00000000 f55c5d90 f8c6f4c7 00000008 f55c5cf2 [ 46.888037] Call Trace: [ 46.888037] [] l2cap_send_cmd+0x1cc/0x230 [bluetooth] [ 46.888037] [] ? l2cap_global_chan_by_psm+0x152/0x1a0 [bluetooth] [ 46.888037] [] l2cap_connect+0x3f7/0x540 [bluetooth] [ 46.888037] [] ? trace_hardirqs_off+0xb/0x10 [ 46.888037] [] ? mark_held_locks+0x68/0x110 [ 46.888037] [] ? mutex_lock_nested+0x280/0x360 [ 46.888037] [] ? __mutex_unlock_slowpath+0xa9/0x150 [ 46.888037] [] ? trace_hardirqs_on_caller+0xec/0x1b0 [ 46.888037] [] ? mutex_lock_nested+0x268/0x360 [ 46.888037] [] ? trace_hardirqs_on+0xb/0x10 [ 46.888037] [] l2cap_recv_frame+0xb2d/0x1d30 [bluetooth] [ 46.888037] [] ? mark_held_locks+0x68/0x110 [ 46.888037] [] ? __mutex_unlock_slowpath+0xa9/0x150 [ 46.888037] [] ? trace_hardirqs_on_caller+0xec/0x1b0 [ 46.888037] [] l2cap_recv_acldata+0x2a1/0x320 [bluetooth] [ 46.888037] [] hci_rx_work+0x518/0x810 [bluetooth] [ 46.888037] [] ? hci_rx_work+0x132/0x810 [bluetooth] [ 46.888037] [] process_one_work+0x1a9/0x600 [ 46.888037] [] ? process_one_work+0x12b/0x600 [ 46.888037] [] ? worker_thread+0x19e/0x320 [ 46.888037] [] ? worker_thread+0x19e/0x320 [ 46.888037] [] worker_thread+0xf7/0x320 [ 46.888037] [] ? rescuer_thread+0x290/0x290 [ 46.888037] [] kthread+0xa8/0xb0 [ 46.888037] [] ret_from_kernel_thread+0x1b/0x28 [ 46.888037] [] ? flush_kthread_worker+0x120/0x120 [ 46.888037] Code: c3 90 8d 74 26 00 e8 63 fc ff ff eb e8 90 55 89 e5 83 ec 0c 89 5d f4 89 75 f8 89 7d fc 3e 8d 74 26 00 89 cb 89 c7 c1 e9 02 89 d6 a5 89 d9 83 e1 03 74 02 f3 a4 8b 5d f4 8b 75 f8 8b 7d fc 89 [ 46.888037] EIP: [] memcpy+0x1d/0x40 SS:ESP 0068:f55c5c5c [ 46.888037] CR2: 00000000f56ad000 [ 46.888037] ---[ end trace 0217c1f4d78714a9 ]--- Signed-off-by: Anderson Lizardo Cc: stable@vger.kernel.org Signed-off-by: Gustavo Padovan Signed-off-by: John W. Linville diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 24bee07..4be6a26 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -2852,6 +2852,9 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn, u8 code, BT_DBG("conn %p, code 0x%2.2x, ident 0x%2.2x, len %u", conn, code, ident, dlen); + if (conn->mtu < L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE) + return NULL; + len = L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE + dlen; count = min_t(unsigned int, conn->mtu, len); -- cgit v0.10.2 From 59f45d576a0715026d1919ab8a12047616204656 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Thu, 13 Jun 2013 11:01:13 +0300 Subject: Bluetooth: Fix conditions for HCI_Delete_Stored_Link_Key Even though the HCI_Delete_Stored_Link_Key command is mandatory for 1.1 and later controllers some controllers do not seem to support it properly as was witnessed by one Broadcom based controller: < HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7 bdaddr 00:00:00:00:00:00 all 1 > HCI Event: Command Complete (0x0e) plen 4 Delete Stored Link Key (0x03|0x0012) ncmd 1 status 0x11 deleted 0 Error: Unsupported Feature or Parameter Value Luckily this same controller also doesn't list the command in its supported commands bit mask (counting from 0 bit 7 of octet 6): < HCI Command: Read Local Supported Commands (0x04|0x0002) plen 0 > HCI Event: Command Complete (0x0e) plen 68 Read Local Supported Commands (0x04|0x0002) ncmd 1 status 0x00 Commands: ffffffffffff1ffffffffffff30fffff3f Therefore, it makes sense to move sending of HCI_Delete_Stored_Link_Key to after receiving the supported commands response and to only send it if its respective bit in the mask is set. The downside of this is that we no longer send the HCI_Delete_Stored_Link_Key command for Bluetooth 1.1 controllers since HCI_Read_Local_Supported_Command was introduced in version 1.2, but this is an acceptable penalty as the command in question shouldn't affect critical behavior. Reported-by: Pavel Machek Signed-off-by: Johan Hedberg Tested-by: Pavel Machek Signed-off-by: Gustavo Padovan Signed-off-by: John W. Linville diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index d817c93..ace5e55 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -341,7 +341,6 @@ static void hci_init1_req(struct hci_request *req, unsigned long opt) static void bredr_setup(struct hci_request *req) { - struct hci_cp_delete_stored_link_key cp; __le16 param; __u8 flt_type; @@ -365,10 +364,6 @@ static void bredr_setup(struct hci_request *req) param = __constant_cpu_to_le16(0x7d00); hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); - bacpy(&cp.bdaddr, BDADDR_ANY); - cp.delete_all = 0x01; - hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); - /* Read page scan parameters */ if (req->hdev->hci_ver > BLUETOOTH_VER_1_1) { hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); @@ -602,6 +597,16 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt) struct hci_dev *hdev = req->hdev; u8 p; + /* Only send HCI_Delete_Stored_Link_Key if it is supported */ + if (hdev->commands[6] & 0x80) { + struct hci_cp_delete_stored_link_key cp; + + bacpy(&cp.bdaddr, BDADDR_ANY); + cp.delete_all = 0x01; + hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, + sizeof(cp), &cp); + } + if (hdev->commands[5] & 0x10) hci_setup_link_policy(req); -- cgit v0.10.2 From ea05fea9042620ac3b8ab9a3e5e4d2ed80c89244 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Tue, 11 Jun 2013 15:40:20 -0400 Subject: Bluetooth: btmrvl: fix thread stopping race There is currently a race condition in the btmrvl_remove_card() which is causing hangs on suspend for OLPC. When the race occurs, kthread_stop() never returns. The problem is that btmrvl_service_main_thread() calls kthread_should_stop() and then does a fair number of things before restarting the loop and sleeping. If the thread gets stopped after kthread_should_stop() is checked, but before the sleep happens, the thread will go to sleep and won't necessarily be woken up. Move the kthread_should_stop() check into a race-free place. Signed-off-by: Daniel Drake Signed-off-by: Gustavo Padovan Signed-off-by: John W. Linville diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index 3a4343b..9a9f518 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -498,6 +498,10 @@ static int btmrvl_service_main_thread(void *data) add_wait_queue(&thread->wait_q, &wait); set_current_state(TASK_INTERRUPTIBLE); + if (kthread_should_stop()) { + BT_DBG("main_thread: break from main thread"); + break; + } if (adapter->wakeup_tries || ((!adapter->int_count) && @@ -513,11 +517,6 @@ static int btmrvl_service_main_thread(void *data) BT_DBG("main_thread woke up"); - if (kthread_should_stop()) { - BT_DBG("main_thread: break from main thread"); - break; - } - spin_lock_irqsave(&priv->driver_lock, flags); if (adapter->int_count) { adapter->int_count = 0; -- cgit v0.10.2 From fcb3701849957917a234a61b58ad70ed35c83eda Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Fri, 7 Jun 2013 11:03:00 +0200 Subject: brcmfmac: free primary net_device when brcmf_bus_start() fails When initialization within brcmf_bus_start() fails on steps before the brcmf_net_attach() the net_device for the primary interface needs to be freed. This patch resolves a panic during kernel boot as reported by Stephen Warren. ref.: http://mid.gmane.org/51AD1F22.2080004@wwwdotorg.org Tested-by: Stephen Warren Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c index b98f223..2c59357 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -930,6 +930,10 @@ fail: brcmf_fws_del_interface(ifp); brcmf_fws_deinit(drvr); } + if (drvr->iflist[0]) { + free_netdev(ifp->ndev); + drvr->iflist[0] = NULL; + } if (p2p_ifp) { free_netdev(p2p_ifp->ndev); drvr->iflist[1] = NULL; -- cgit v0.10.2 From b0a4d8b3cf199e7277f659663ac3a3580e9967bb Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Fri, 31 May 2013 11:14:20 +0100 Subject: kbuild: make sure we clean up DTB temporary files Various temporary files used when building DTB files were not suffixed with .tmp and therefore were not cleaned up by "make clean". Signed-off-by: Ian Campbell Reviewed-by: Stephen Warren Tested-by: Stephen Warren Signed-off-by: Grant Likely diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 8337663..f97869f 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -149,7 +149,7 @@ cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ ld_flags = $(LDFLAGS) $(ldflags-y) -dtc_cpp_flags = -Wp,-MD,$(depfile).pre -nostdinc \ +dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ -I$(srctree)/arch/$(SRCARCH)/boot/dts \ -I$(srctree)/arch/$(SRCARCH)/boot/dts/include \ -undef -D__DTS__ @@ -265,13 +265,13 @@ quiet_cmd_dtc = DTC $@ cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 \ -i $(dir $<) $(DTC_FLAGS) \ - -d $(depfile).dtc $(dtc-tmp) ; \ - cat $(depfile).pre $(depfile).dtc > $(depfile) + -d $(depfile).dtc.tmp $(dtc-tmp) ; \ + cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) $(obj)/%.dtb: $(src)/%.dts FORCE $(call if_changed_dep,dtc) -dtc-tmp = $(subst $(comma),_,$(dot-target).dts) +dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) # Bzip2 # --------------------------------------------------------------------------- -- cgit v0.10.2 From d25d86949b6799c35d78f4910498c2b65a3f0841 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 12 Jun 2013 15:39:04 +1000 Subject: of: Fix locking vs. interrupts The OF code uses irqsafe locks everywhere except in a handful of functions for no obvious reasons. Since the conversion from the old rwlocks, this now triggers lockdep warnings when used at interrupt time. At least one driver (ibmvscsi) seems to be doing that from softirq context. This converts the few non-irqsafe locks into irqsafe ones, making them consistent with the rest of the code. Signed-off-by: Benjamin Herrenschmidt Acked-by: Thomas Gleixner Acked-by: David S. Miller Signed-off-by: Grant Likely diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c index 9f20566..79cc0d1 100644 --- a/arch/sparc/kernel/prom_common.c +++ b/arch/sparc/kernel/prom_common.c @@ -54,6 +54,7 @@ EXPORT_SYMBOL(of_set_property_mutex); int of_set_property(struct device_node *dp, const char *name, void *val, int len) { struct property **prevp; + unsigned long flags; void *new_val; int err; @@ -64,7 +65,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len err = -ENODEV; mutex_lock(&of_set_property_mutex); - raw_spin_lock(&devtree_lock); + raw_spin_lock_irqsave(&devtree_lock, flags); prevp = &dp->properties; while (*prevp) { struct property *prop = *prevp; @@ -91,7 +92,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len } prevp = &(*prevp)->next; } - raw_spin_unlock(&devtree_lock); + raw_spin_unlock_irqrestore(&devtree_lock, flags); mutex_unlock(&of_set_property_mutex); /* XXX Upate procfs if necessary... */ diff --git a/drivers/of/base.c b/drivers/of/base.c index f53b992..a6f584a 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -192,14 +192,15 @@ EXPORT_SYMBOL(of_find_property); struct device_node *of_find_all_nodes(struct device_node *prev) { struct device_node *np; + unsigned long flags; - raw_spin_lock(&devtree_lock); + raw_spin_lock_irqsave(&devtree_lock, flags); np = prev ? prev->allnext : of_allnodes; for (; np != NULL; np = np->allnext) if (of_node_get(np)) break; of_node_put(prev); - raw_spin_unlock(&devtree_lock); + raw_spin_unlock_irqrestore(&devtree_lock, flags); return np; } EXPORT_SYMBOL(of_find_all_nodes); @@ -421,8 +422,9 @@ struct device_node *of_get_next_available_child(const struct device_node *node, struct device_node *prev) { struct device_node *next; + unsigned long flags; - raw_spin_lock(&devtree_lock); + raw_spin_lock_irqsave(&devtree_lock, flags); next = prev ? prev->sibling : node->child; for (; next; next = next->sibling) { if (!__of_device_is_available(next)) @@ -431,7 +433,7 @@ struct device_node *of_get_next_available_child(const struct device_node *node, break; } of_node_put(prev); - raw_spin_unlock(&devtree_lock); + raw_spin_unlock_irqrestore(&devtree_lock, flags); return next; } EXPORT_SYMBOL(of_get_next_available_child); @@ -735,13 +737,14 @@ EXPORT_SYMBOL_GPL(of_modalias_node); struct device_node *of_find_node_by_phandle(phandle handle) { struct device_node *np; + unsigned long flags; - raw_spin_lock(&devtree_lock); + raw_spin_lock_irqsave(&devtree_lock, flags); for (np = of_allnodes; np; np = np->allnext) if (np->phandle == handle) break; of_node_get(np); - raw_spin_unlock(&devtree_lock); + raw_spin_unlock_irqrestore(&devtree_lock, flags); return np; } EXPORT_SYMBOL(of_find_node_by_phandle); -- cgit v0.10.2 From 2a6a08ca5e3561e17346f8f87ce8dc88c0a8e42d Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 13 Jun 2013 13:00:43 +0100 Subject: dtc: Update generated files to output from Bison 2.5 This patch merely updates the generated dtc parser and lexer files to the output generated by Bison 2.5. The previous versions were generated from version 2.4.1. The only reason for this commit is to minimize the diff on the next commit which fixes a bug in the DTC #line directive parsing. Otherwise the Bison changes would be intermingled with the functional changes. Signed-off-by: Grant Likely diff --git a/scripts/dtc/dtc-parser.tab.c_shipped b/scripts/dtc/dtc-parser.tab.c_shipped index 4af5590..ee1d8c3 100644 --- a/scripts/dtc/dtc-parser.tab.c_shipped +++ b/scripts/dtc/dtc-parser.tab.c_shipped @@ -1,10 +1,8 @@ +/* A Bison parser, made by GNU Bison 2.5. */ -/* A Bison parser, made by GNU Bison 2.4.1. */ - -/* Skeleton implementation for Bison's Yacc-like parsers in C +/* Bison implementation for Yacc-like parsers in C - Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. + Copyright (C) 1984, 1989-1990, 2000-2011 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -46,7 +44,7 @@ #define YYBISON 1 /* Bison version. */ -#define YYBISON_VERSION "2.4.1" +#define YYBISON_VERSION "2.5" /* Skeleton name. */ #define YYSKELETON_NAME "yacc.c" @@ -67,7 +65,7 @@ /* Copy the first part of user declarations. */ -/* Line 189 of yacc.c */ +/* Line 268 of yacc.c */ #line 21 "dtc-parser.y" #include @@ -88,8 +86,8 @@ static unsigned long long eval_literal(const char *s, int base, int bits); static unsigned char eval_char_literal(const char *s); -/* Line 189 of yacc.c */ -#line 93 "dtc-parser.tab.c" +/* Line 268 of yacc.c */ +#line 91 "dtc-parser.tab.c" /* Enabling traces. */ #ifndef YYDEBUG @@ -147,7 +145,7 @@ static unsigned char eval_char_literal(const char *s); typedef union YYSTYPE { -/* Line 214 of yacc.c */ +/* Line 293 of yacc.c */ #line 40 "dtc-parser.y" char *propnodename; @@ -171,8 +169,8 @@ typedef union YYSTYPE -/* Line 214 of yacc.c */ -#line 176 "dtc-parser.tab.c" +/* Line 293 of yacc.c */ +#line 174 "dtc-parser.tab.c" } YYSTYPE; # define YYSTYPE_IS_TRIVIAL 1 # define yystype YYSTYPE /* obsolescent; will be withdrawn */ @@ -183,8 +181,8 @@ typedef union YYSTYPE /* Copy the second part of user declarations. */ -/* Line 264 of yacc.c */ -#line 188 "dtc-parser.tab.c" +/* Line 343 of yacc.c */ +#line 186 "dtc-parser.tab.c" #ifdef short # undef short @@ -234,7 +232,7 @@ typedef short int yytype_int16; #define YYSIZE_MAXIMUM ((YYSIZE_T) -1) #ifndef YY_ -# if YYENABLE_NLS +# if defined YYENABLE_NLS && YYENABLE_NLS # if ENABLE_NLS # include /* INFRINGES ON USER NAME SPACE */ # define YY_(msgid) dgettext ("bison-runtime", msgid) @@ -287,11 +285,11 @@ YYID (yyi) # define alloca _alloca # else # define YYSTACK_ALLOC alloca -# if ! defined _ALLOCA_H && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \ +# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \ || defined __cplusplus || defined _MSC_VER) # include /* INFRINGES ON USER NAME SPACE */ -# ifndef _STDLIB_H -# define _STDLIB_H 1 +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 # endif # endif # endif @@ -314,24 +312,24 @@ YYID (yyi) # ifndef YYSTACK_ALLOC_MAXIMUM # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM # endif -# if (defined __cplusplus && ! defined _STDLIB_H \ +# if (defined __cplusplus && ! defined EXIT_SUCCESS \ && ! ((defined YYMALLOC || defined malloc) \ && (defined YYFREE || defined free))) # include /* INFRINGES ON USER NAME SPACE */ -# ifndef _STDLIB_H -# define _STDLIB_H 1 +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 # endif # endif # ifndef YYMALLOC # define YYMALLOC malloc -# if ! defined malloc && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \ +# if ! defined malloc && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \ || defined __cplusplus || defined _MSC_VER) void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ # endif # endif # ifndef YYFREE # define YYFREE free -# if ! defined free && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \ +# if ! defined free && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \ || defined __cplusplus || defined _MSC_VER) void free (void *); /* INFRINGES ON USER NAME SPACE */ # endif @@ -360,23 +358,7 @@ union yyalloc ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \ + YYSTACK_GAP_MAXIMUM) -/* Copy COUNT objects from FROM to TO. The source and destination do - not overlap. */ -# ifndef YYCOPY -# if defined __GNUC__ && 1 < __GNUC__ -# define YYCOPY(To, From, Count) \ - __builtin_memcpy (To, From, (Count) * sizeof (*(From))) -# else -# define YYCOPY(To, From, Count) \ - do \ - { \ - YYSIZE_T yyi; \ - for (yyi = 0; yyi < (Count); yyi++) \ - (To)[yyi] = (From)[yyi]; \ - } \ - while (YYID (0)) -# endif -# endif +# define YYCOPY_NEEDED 1 /* Relocate STACK from its old location to the new one. The local variables YYSIZE and YYSTACKSIZE give the old and new number of @@ -396,6 +378,26 @@ union yyalloc #endif +#if defined YYCOPY_NEEDED && YYCOPY_NEEDED +/* Copy COUNT objects from FROM to TO. The source and destination do + not overlap. */ +# ifndef YYCOPY +# if defined __GNUC__ && 1 < __GNUC__ +# define YYCOPY(To, From, Count) \ + __builtin_memcpy (To, From, (Count) * sizeof (*(From))) +# else +# define YYCOPY(To, From, Count) \ + do \ + { \ + YYSIZE_T yyi; \ + for (yyi = 0; yyi < (Count); yyi++) \ + (To)[yyi] = (From)[yyi]; \ + } \ + while (YYID (0)) +# endif +# endif +#endif /* !YYCOPY_NEEDED */ + /* YYFINAL -- State number of the termination state. */ #define YYFINAL 4 /* YYLAST -- Last index in YYTABLE. */ @@ -571,8 +573,8 @@ static const yytype_uint8 yyr2[] = 2, 0, 2, 2, 0, 2, 2, 2, 3, 2 }; -/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state - STATE-NUM when YYTABLE doesn't specify something else to do. Zero +/* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM. + Performed when YYTABLE doesn't specify something else to do. Zero means the default is an error. */ static const yytype_uint8 yydefact[] = { @@ -633,8 +635,7 @@ static const yytype_int8 yypgoto[] = /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If positive, shift that token. If negative, reduce the rule which - number is the opposite. If zero, do what YYDEFACT says. - If YYTABLE_NINF, syntax error. */ + number is the opposite. If YYTABLE_NINF, syntax error. */ #define YYTABLE_NINF -1 static const yytype_uint8 yytable[] = { @@ -654,6 +655,12 @@ static const yytype_uint8 yytable[] = 137, 0, 73, 139 }; +#define yypact_value_is_default(yystate) \ + ((yystate) == (-78)) + +#define yytable_value_is_error(yytable_value) \ + YYID (0) + static const yytype_int16 yycheck[] = { 5, 38, 39, 17, 18, 19, 12, 12, 17, 18, @@ -705,9 +712,18 @@ static const yytype_uint8 yystos[] = /* Like YYERROR except do call yyerror. This remains here temporarily to ease the transition to the new meaning of YYERROR, for GCC. - Once GCC version 2 has supplanted version 1, this can go. */ + Once GCC version 2 has supplanted version 1, this can go. However, + YYFAIL appears to be in use. Nevertheless, it is formally deprecated + in Bison 2.4.2's NEWS entry, where a plan to phase it out is + discussed. */ #define YYFAIL goto yyerrlab +#if defined YYFAIL + /* This is here to suppress warnings from the GCC cpp's + -Wunused-macros. Normally we don't worry about that warning, but + some users do, and we want to make it easy for users to remove + YYFAIL uses, which will produce warnings from Bison 2.5. */ +#endif #define YYRECOVERING() (!!yyerrstatus) @@ -717,7 +733,6 @@ do \ { \ yychar = (Token); \ yylval = (Value); \ - yytoken = YYTRANSLATE (yychar); \ YYPOPSTACK (1); \ goto yybackup; \ } \ @@ -759,19 +774,10 @@ while (YYID (0)) #endif -/* YY_LOCATION_PRINT -- Print the location on the stream. - This macro was not mandated originally: define only if we know - we won't break user code: when these are the locations we know. */ +/* This macro is provided for backward compatibility. */ #ifndef YY_LOCATION_PRINT -# if YYLTYPE_IS_TRIVIAL -# define YY_LOCATION_PRINT(File, Loc) \ - fprintf (File, "%d.%d-%d.%d", \ - (Loc).first_line, (Loc).first_column, \ - (Loc).last_line, (Loc).last_column) -# else -# define YY_LOCATION_PRINT(File, Loc) ((void) 0) -# endif +# define YY_LOCATION_PRINT(File, Loc) ((void) 0) #endif @@ -963,7 +969,6 @@ int yydebug; # define YYMAXDEPTH 10000 #endif - #if YYERROR_VERBOSE @@ -1066,115 +1071,142 @@ yytnamerr (char *yyres, const char *yystr) } # endif -/* Copy into YYRESULT an error message about the unexpected token - YYCHAR while in state YYSTATE. Return the number of bytes copied, - including the terminating null byte. If YYRESULT is null, do not - copy anything; just return the number of bytes that would be - copied. As a special case, return 0 if an ordinary "syntax error" - message will do. Return YYSIZE_MAXIMUM if overflow occurs during - size calculation. */ -static YYSIZE_T -yysyntax_error (char *yyresult, int yystate, int yychar) -{ - int yyn = yypact[yystate]; +/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message + about the unexpected token YYTOKEN for the state stack whose top is + YYSSP. - if (! (YYPACT_NINF < yyn && yyn <= YYLAST)) - return 0; - else + Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is + not large enough to hold the message. In that case, also set + *YYMSG_ALLOC to the required number of bytes. Return 2 if the + required number of bytes is too large to store. */ +static int +yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, + yytype_int16 *yyssp, int yytoken) +{ + YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]); + YYSIZE_T yysize = yysize0; + YYSIZE_T yysize1; + enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; + /* Internationalized format string. */ + const char *yyformat = 0; + /* Arguments of yyformat. */ + char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; + /* Number of reported tokens (one for the "unexpected", one per + "expected"). */ + int yycount = 0; + + /* There are many possibilities here to consider: + - Assume YYFAIL is not used. It's too flawed to consider. See + + for details. YYERROR is fine as it does not invoke this + function. + - If this state is a consistent state with a default action, then + the only way this function was invoked is if the default action + is an error action. In that case, don't check for expected + tokens because there are none. + - The only way there can be no lookahead present (in yychar) is if + this state is a consistent state with a default action. Thus, + detecting the absence of a lookahead is sufficient to determine + that there is no unexpected or expected token to report. In that + case, just report a simple "syntax error". + - Don't assume there isn't a lookahead just because this state is a + consistent state with a default action. There might have been a + previous inconsistent state, consistent state with a non-default + action, or user semantic action that manipulated yychar. + - Of course, the expected token list depends on states to have + correct lookahead information, and it depends on the parser not + to perform extra reductions after fetching a lookahead from the + scanner and before detecting a syntax error. Thus, state merging + (from LALR or IELR) and default reductions corrupt the expected + token list. However, the list is correct for canonical LR with + one exception: it will still contain any token that will not be + accepted due to an error action in a later state. + */ + if (yytoken != YYEMPTY) { - int yytype = YYTRANSLATE (yychar); - YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]); - YYSIZE_T yysize = yysize0; - YYSIZE_T yysize1; - int yysize_overflow = 0; - enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; - char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; - int yyx; - -# if 0 - /* This is so xgettext sees the translatable formats that are - constructed on the fly. */ - YY_("syntax error, unexpected %s"); - YY_("syntax error, unexpected %s, expecting %s"); - YY_("syntax error, unexpected %s, expecting %s or %s"); - YY_("syntax error, unexpected %s, expecting %s or %s or %s"); - YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"); -# endif - char *yyfmt; - char const *yyf; - static char const yyunexpected[] = "syntax error, unexpected %s"; - static char const yyexpecting[] = ", expecting %s"; - static char const yyor[] = " or %s"; - char yyformat[sizeof yyunexpected - + sizeof yyexpecting - 1 - + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2) - * (sizeof yyor - 1))]; - char const *yyprefix = yyexpecting; - - /* Start YYX at -YYN if negative to avoid negative indexes in - YYCHECK. */ - int yyxbegin = yyn < 0 ? -yyn : 0; - - /* Stay within bounds of both yycheck and yytname. */ - int yychecklim = YYLAST - yyn + 1; - int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; - int yycount = 1; - - yyarg[0] = yytname[yytype]; - yyfmt = yystpcpy (yyformat, yyunexpected); - - for (yyx = yyxbegin; yyx < yyxend; ++yyx) - if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) - { - if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) - { - yycount = 1; - yysize = yysize0; - yyformat[sizeof yyunexpected - 1] = '\0'; - break; - } - yyarg[yycount++] = yytname[yyx]; - yysize1 = yysize + yytnamerr (0, yytname[yyx]); - yysize_overflow |= (yysize1 < yysize); - yysize = yysize1; - yyfmt = yystpcpy (yyfmt, yyprefix); - yyprefix = yyor; - } + int yyn = yypact[*yyssp]; + yyarg[yycount++] = yytname[yytoken]; + if (!yypact_value_is_default (yyn)) + { + /* Start YYX at -YYN if negative to avoid negative indexes in + YYCHECK. In other words, skip the first -YYN actions for + this state because they are default actions. */ + int yyxbegin = yyn < 0 ? -yyn : 0; + /* Stay within bounds of both yycheck and yytname. */ + int yychecklim = YYLAST - yyn + 1; + int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; + int yyx; + + for (yyx = yyxbegin; yyx < yyxend; ++yyx) + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR + && !yytable_value_is_error (yytable[yyx + yyn])) + { + if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) + { + yycount = 1; + yysize = yysize0; + break; + } + yyarg[yycount++] = yytname[yyx]; + yysize1 = yysize + yytnamerr (0, yytname[yyx]); + if (! (yysize <= yysize1 + && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) + return 2; + yysize = yysize1; + } + } + } - yyf = YY_(yyformat); - yysize1 = yysize + yystrlen (yyf); - yysize_overflow |= (yysize1 < yysize); - yysize = yysize1; + switch (yycount) + { +# define YYCASE_(N, S) \ + case N: \ + yyformat = S; \ + break + YYCASE_(0, YY_("syntax error")); + YYCASE_(1, YY_("syntax error, unexpected %s")); + YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s")); + YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s")); + YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s")); + YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s")); +# undef YYCASE_ + } - if (yysize_overflow) - return YYSIZE_MAXIMUM; + yysize1 = yysize + yystrlen (yyformat); + if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) + return 2; + yysize = yysize1; - if (yyresult) - { - /* Avoid sprintf, as that infringes on the user's name space. - Don't have undefined behavior even if the translation - produced a string with the wrong number of "%s"s. */ - char *yyp = yyresult; - int yyi = 0; - while ((*yyp = *yyf) != '\0') - { - if (*yyp == '%' && yyf[1] == 's' && yyi < yycount) - { - yyp += yytnamerr (yyp, yyarg[yyi++]); - yyf += 2; - } - else - { - yyp++; - yyf++; - } - } - } - return yysize; + if (*yymsg_alloc < yysize) + { + *yymsg_alloc = 2 * yysize; + if (! (yysize <= *yymsg_alloc + && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM)) + *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM; + return 1; } + + /* Avoid sprintf, as that infringes on the user's name space. + Don't have undefined behavior even if the translation + produced a string with the wrong number of "%s"s. */ + { + char *yyp = *yymsg; + int yyi = 0; + while ((*yyp = *yyformat) != '\0') + if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount) + { + yyp += yytnamerr (yyp, yyarg[yyi++]); + yyformat += 2; + } + else + { + yyp++; + yyformat++; + } + } + return 0; } #endif /* YYERROR_VERBOSE */ - /*-----------------------------------------------. | Release the memory associated to this symbol. | @@ -1207,6 +1239,7 @@ yydestruct (yymsg, yytype, yyvaluep) } } + /* Prevent warnings from -Wmissing-prototypes. */ #ifdef YYPARSE_PARAM #if defined __STDC__ || defined __cplusplus @@ -1233,10 +1266,9 @@ YYSTYPE yylval; int yynerrs; - -/*-------------------------. -| yyparse or yypush_parse. | -`-------------------------*/ +/*----------. +| yyparse. | +`----------*/ #ifdef YYPARSE_PARAM #if (defined __STDC__ || defined __C99__FUNC__ \ @@ -1260,8 +1292,6 @@ yyparse () #endif #endif { - - int yystate; /* Number of tokens to shift before error messages enabled. */ int yyerrstatus; @@ -1416,7 +1446,7 @@ yybackup: /* First try to decide what to do without reference to lookahead token. */ yyn = yypact[yystate]; - if (yyn == YYPACT_NINF) + if (yypact_value_is_default (yyn)) goto yydefault; /* Not known => get a lookahead token if don't already have one. */ @@ -1447,8 +1477,8 @@ yybackup: yyn = yytable[yyn]; if (yyn <= 0) { - if (yyn == 0 || yyn == YYTABLE_NINF) - goto yyerrlab; + if (yytable_value_is_error (yyn)) + goto yyerrlab; yyn = -yyn; goto yyreduce; } @@ -1503,72 +1533,72 @@ yyreduce: { case 2: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 110 "dtc-parser.y" { the_boot_info = build_boot_info((yyvsp[(3) - (4)].re), (yyvsp[(4) - (4)].node), guess_boot_cpuid((yyvsp[(4) - (4)].node))); - ;} + } break; case 3: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 118 "dtc-parser.y" { (yyval.re) = NULL; - ;} + } break; case 4: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 122 "dtc-parser.y" { (yyval.re) = chain_reserve_entry((yyvsp[(1) - (2)].re), (yyvsp[(2) - (2)].re)); - ;} + } break; case 5: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 129 "dtc-parser.y" { (yyval.re) = build_reserve_entry((yyvsp[(2) - (4)].integer), (yyvsp[(3) - (4)].integer)); - ;} + } break; case 6: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 133 "dtc-parser.y" { add_label(&(yyvsp[(2) - (2)].re)->labels, (yyvsp[(1) - (2)].labelref)); (yyval.re) = (yyvsp[(2) - (2)].re); - ;} + } break; case 7: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 141 "dtc-parser.y" { (yyval.node) = name_node((yyvsp[(2) - (2)].node), ""); - ;} + } break; case 8: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 145 "dtc-parser.y" { (yyval.node) = merge_nodes((yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - ;} + } break; case 9: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 149 "dtc-parser.y" { struct node *target = get_node_by_ref((yyvsp[(1) - (3)].node), (yyvsp[(2) - (3)].labelref)); @@ -1578,12 +1608,12 @@ yyreduce: else print_error("label or path, '%s', not found", (yyvsp[(2) - (3)].labelref)); (yyval.node) = (yyvsp[(1) - (3)].node); - ;} + } break; case 10: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 159 "dtc-parser.y" { struct node *target = get_node_by_ref((yyvsp[(1) - (4)].node), (yyvsp[(3) - (4)].labelref)); @@ -1594,112 +1624,112 @@ yyreduce: delete_node(target); (yyval.node) = (yyvsp[(1) - (4)].node); - ;} + } break; case 11: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 173 "dtc-parser.y" { (yyval.node) = build_node((yyvsp[(2) - (5)].proplist), (yyvsp[(3) - (5)].nodelist)); - ;} + } break; case 12: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 180 "dtc-parser.y" { (yyval.proplist) = NULL; - ;} + } break; case 13: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 184 "dtc-parser.y" { (yyval.proplist) = chain_property((yyvsp[(2) - (2)].prop), (yyvsp[(1) - (2)].proplist)); - ;} + } break; case 14: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 191 "dtc-parser.y" { (yyval.prop) = build_property((yyvsp[(1) - (4)].propnodename), (yyvsp[(3) - (4)].data)); - ;} + } break; case 15: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 195 "dtc-parser.y" { (yyval.prop) = build_property((yyvsp[(1) - (2)].propnodename), empty_data); - ;} + } break; case 16: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 199 "dtc-parser.y" { (yyval.prop) = build_property_delete((yyvsp[(2) - (3)].propnodename)); - ;} + } break; case 17: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 203 "dtc-parser.y" { add_label(&(yyvsp[(2) - (2)].prop)->labels, (yyvsp[(1) - (2)].labelref)); (yyval.prop) = (yyvsp[(2) - (2)].prop); - ;} + } break; case 18: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 211 "dtc-parser.y" { (yyval.data) = data_merge((yyvsp[(1) - (2)].data), (yyvsp[(2) - (2)].data)); - ;} + } break; case 19: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 215 "dtc-parser.y" { (yyval.data) = data_merge((yyvsp[(1) - (3)].data), (yyvsp[(2) - (3)].array).data); - ;} + } break; case 20: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 219 "dtc-parser.y" { (yyval.data) = data_merge((yyvsp[(1) - (4)].data), (yyvsp[(3) - (4)].data)); - ;} + } break; case 21: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 223 "dtc-parser.y" { (yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), REF_PATH, (yyvsp[(2) - (2)].labelref)); - ;} + } break; case 22: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 227 "dtc-parser.y" { FILE *f = srcfile_relative_open((yyvsp[(4) - (9)].data).val, NULL); @@ -1716,12 +1746,12 @@ yyreduce: (yyval.data) = data_merge((yyvsp[(1) - (9)].data), d); fclose(f); - ;} + } break; case 23: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 244 "dtc-parser.y" { FILE *f = srcfile_relative_open((yyvsp[(4) - (5)].data).val, NULL); @@ -1731,48 +1761,48 @@ yyreduce: (yyval.data) = data_merge((yyvsp[(1) - (5)].data), d); fclose(f); - ;} + } break; case 24: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 254 "dtc-parser.y" { (yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), LABEL, (yyvsp[(2) - (2)].labelref)); - ;} + } break; case 25: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 261 "dtc-parser.y" { (yyval.data) = empty_data; - ;} + } break; case 26: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 265 "dtc-parser.y" { (yyval.data) = (yyvsp[(1) - (2)].data); - ;} + } break; case 27: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 269 "dtc-parser.y" { (yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), LABEL, (yyvsp[(2) - (2)].labelref)); - ;} + } break; case 28: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 276 "dtc-parser.y" { (yyval.array).data = empty_data; @@ -1787,22 +1817,22 @@ yyreduce: " are currently supported"); (yyval.array).bits = 32; } - ;} + } break; case 29: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 291 "dtc-parser.y" { (yyval.array).data = empty_data; (yyval.array).bits = 32; - ;} + } break; case 30: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 296 "dtc-parser.y" { if ((yyvsp[(1) - (2)].array).bits < 64) { @@ -1822,12 +1852,12 @@ yyreduce: } (yyval.array).data = data_append_integer((yyvsp[(1) - (2)].array).data, (yyvsp[(2) - (2)].integer), (yyvsp[(1) - (2)].array).bits); - ;} + } break; case 31: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 316 "dtc-parser.y" { uint64_t val = ~0ULL >> (64 - (yyvsp[(1) - (2)].array).bits); @@ -1841,288 +1871,299 @@ yyreduce: "arrays with 32-bit elements."); (yyval.array).data = data_append_integer((yyvsp[(1) - (2)].array).data, val, (yyvsp[(1) - (2)].array).bits); - ;} + } break; case 32: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 330 "dtc-parser.y" { (yyval.array).data = data_add_marker((yyvsp[(1) - (2)].array).data, LABEL, (yyvsp[(2) - (2)].labelref)); - ;} + } break; case 33: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 337 "dtc-parser.y" { (yyval.integer) = eval_literal((yyvsp[(1) - (1)].literal), 0, 64); - ;} + } break; case 34: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 341 "dtc-parser.y" { (yyval.integer) = eval_char_literal((yyvsp[(1) - (1)].literal)); - ;} + } break; case 35: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 345 "dtc-parser.y" { (yyval.integer) = (yyvsp[(2) - (3)].integer); - ;} + } break; case 38: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 356 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (5)].integer) ? (yyvsp[(3) - (5)].integer) : (yyvsp[(5) - (5)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (5)].integer) ? (yyvsp[(3) - (5)].integer) : (yyvsp[(5) - (5)].integer); } break; case 40: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 361 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) || (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) || (yyvsp[(3) - (3)].integer); } break; case 42: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 366 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) && (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) && (yyvsp[(3) - (3)].integer); } break; case 44: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 371 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) | (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) | (yyvsp[(3) - (3)].integer); } break; case 46: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 376 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) ^ (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) ^ (yyvsp[(3) - (3)].integer); } break; case 48: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 381 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) & (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) & (yyvsp[(3) - (3)].integer); } break; case 50: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 386 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) == (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) == (yyvsp[(3) - (3)].integer); } break; case 51: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 387 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) != (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) != (yyvsp[(3) - (3)].integer); } break; case 53: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 392 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) < (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) < (yyvsp[(3) - (3)].integer); } break; case 54: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 393 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) > (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) > (yyvsp[(3) - (3)].integer); } break; case 55: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 394 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) <= (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) <= (yyvsp[(3) - (3)].integer); } break; case 56: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 395 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) >= (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) >= (yyvsp[(3) - (3)].integer); } break; case 57: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 399 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) << (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) << (yyvsp[(3) - (3)].integer); } break; case 58: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 400 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) >> (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) >> (yyvsp[(3) - (3)].integer); } break; case 60: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 405 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) + (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) + (yyvsp[(3) - (3)].integer); } break; case 61: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 406 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) - (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) - (yyvsp[(3) - (3)].integer); } break; case 63: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 411 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) * (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) * (yyvsp[(3) - (3)].integer); } break; case 64: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 412 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) / (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) / (yyvsp[(3) - (3)].integer); } break; case 65: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 413 "dtc-parser.y" - { (yyval.integer) = (yyvsp[(1) - (3)].integer) % (yyvsp[(3) - (3)].integer); ;} + { (yyval.integer) = (yyvsp[(1) - (3)].integer) % (yyvsp[(3) - (3)].integer); } break; case 68: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 419 "dtc-parser.y" - { (yyval.integer) = -(yyvsp[(2) - (2)].integer); ;} + { (yyval.integer) = -(yyvsp[(2) - (2)].integer); } break; case 69: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 420 "dtc-parser.y" - { (yyval.integer) = ~(yyvsp[(2) - (2)].integer); ;} + { (yyval.integer) = ~(yyvsp[(2) - (2)].integer); } break; case 70: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 421 "dtc-parser.y" - { (yyval.integer) = !(yyvsp[(2) - (2)].integer); ;} + { (yyval.integer) = !(yyvsp[(2) - (2)].integer); } break; case 71: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 426 "dtc-parser.y" { (yyval.data) = empty_data; - ;} + } break; case 72: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 430 "dtc-parser.y" { (yyval.data) = data_append_byte((yyvsp[(1) - (2)].data), (yyvsp[(2) - (2)].byte)); - ;} + } break; case 73: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 434 "dtc-parser.y" { (yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), LABEL, (yyvsp[(2) - (2)].labelref)); - ;} + } break; case 74: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 441 "dtc-parser.y" { (yyval.nodelist) = NULL; - ;} + } break; case 75: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 445 "dtc-parser.y" { (yyval.nodelist) = chain_node((yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].nodelist)); - ;} + } break; case 76: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 449 "dtc-parser.y" { print_error("syntax error: properties must precede subnodes"); YYERROR; - ;} + } break; case 77: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 457 "dtc-parser.y" { (yyval.node) = name_node((yyvsp[(2) - (2)].node), (yyvsp[(1) - (2)].propnodename)); - ;} + } break; case 78: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 461 "dtc-parser.y" { (yyval.node) = name_node(build_node_delete(), (yyvsp[(2) - (3)].propnodename)); - ;} + } break; case 79: -/* Line 1455 of yacc.c */ +/* Line 1806 of yacc.c */ #line 465 "dtc-parser.y" { add_label(&(yyvsp[(2) - (2)].node)->labels, (yyvsp[(1) - (2)].labelref)); (yyval.node) = (yyvsp[(2) - (2)].node); - ;} + } break; -/* Line 1455 of yacc.c */ -#line 2124 "dtc-parser.tab.c" +/* Line 1806 of yacc.c */ +#line 2154 "dtc-parser.tab.c" default: break; } + /* User semantic actions sometimes alter yychar, and that requires + that yytoken be updated with the new translation. We take the + approach of translating immediately before every use of yytoken. + One alternative is translating here after every semantic action, + but that translation would be missed if the semantic action invokes + YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or + if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an + incorrect destructor might then be invoked immediately. In the + case of YYERROR or YYBACKUP, subsequent parser actions might lead + to an incorrect destructor call or verbose syntax error message + before the lookahead is translated. */ YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc); YYPOPSTACK (yylen); @@ -2150,6 +2191,10 @@ yyreduce: | yyerrlab -- here on detecting error | `------------------------------------*/ yyerrlab: + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar); + /* If not already recovering from an error, report this error. */ if (!yyerrstatus) { @@ -2157,37 +2202,36 @@ yyerrlab: #if ! YYERROR_VERBOSE yyerror (YY_("syntax error")); #else +# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \ + yyssp, yytoken) { - YYSIZE_T yysize = yysyntax_error (0, yystate, yychar); - if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM) - { - YYSIZE_T yyalloc = 2 * yysize; - if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM)) - yyalloc = YYSTACK_ALLOC_MAXIMUM; - if (yymsg != yymsgbuf) - YYSTACK_FREE (yymsg); - yymsg = (char *) YYSTACK_ALLOC (yyalloc); - if (yymsg) - yymsg_alloc = yyalloc; - else - { - yymsg = yymsgbuf; - yymsg_alloc = sizeof yymsgbuf; - } - } - - if (0 < yysize && yysize <= yymsg_alloc) - { - (void) yysyntax_error (yymsg, yystate, yychar); - yyerror (yymsg); - } - else - { - yyerror (YY_("syntax error")); - if (yysize != 0) - goto yyexhaustedlab; - } + char const *yymsgp = YY_("syntax error"); + int yysyntax_error_status; + yysyntax_error_status = YYSYNTAX_ERROR; + if (yysyntax_error_status == 0) + yymsgp = yymsg; + else if (yysyntax_error_status == 1) + { + if (yymsg != yymsgbuf) + YYSTACK_FREE (yymsg); + yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc); + if (!yymsg) + { + yymsg = yymsgbuf; + yymsg_alloc = sizeof yymsgbuf; + yysyntax_error_status = 2; + } + else + { + yysyntax_error_status = YYSYNTAX_ERROR; + yymsgp = yymsg; + } + } + yyerror (yymsgp); + if (yysyntax_error_status == 2) + goto yyexhaustedlab; } +# undef YYSYNTAX_ERROR #endif } @@ -2246,7 +2290,7 @@ yyerrlab1: for (;;) { yyn = yypact[yystate]; - if (yyn != YYPACT_NINF) + if (!yypact_value_is_default (yyn)) { yyn += YYTERROR; if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) @@ -2305,8 +2349,13 @@ yyexhaustedlab: yyreturn: if (yychar != YYEMPTY) - yydestruct ("Cleanup: discarding lookahead", - yytoken, &yylval); + { + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = YYTRANSLATE (yychar); + yydestruct ("Cleanup: discarding lookahead", + yytoken, &yylval); + } /* Do not reclaim the symbols of the rule which action triggered this YYABORT or YYACCEPT. */ YYPOPSTACK (yylen); @@ -2331,7 +2380,7 @@ yyreturn: -/* Line 1675 of yacc.c */ +/* Line 2067 of yacc.c */ #line 471 "dtc-parser.y" diff --git a/scripts/dtc/dtc-parser.tab.h_shipped b/scripts/dtc/dtc-parser.tab.h_shipped index 9d2dce4..25d3b88 100644 --- a/scripts/dtc/dtc-parser.tab.h_shipped +++ b/scripts/dtc/dtc-parser.tab.h_shipped @@ -1,10 +1,8 @@ +/* A Bison parser, made by GNU Bison 2.5. */ -/* A Bison parser, made by GNU Bison 2.4.1. */ - -/* Skeleton interface for Bison's Yacc-like parsers in C +/* Bison interface for Yacc-like parsers in C - Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. + Copyright (C) 1984, 1989-1990, 2000-2011 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -70,7 +68,7 @@ typedef union YYSTYPE { -/* Line 1676 of yacc.c */ +/* Line 2068 of yacc.c */ #line 40 "dtc-parser.y" char *propnodename; @@ -94,8 +92,8 @@ typedef union YYSTYPE -/* Line 1676 of yacc.c */ -#line 99 "dtc-parser.tab.h" +/* Line 2068 of yacc.c */ +#line 97 "dtc-parser.tab.h" } YYSTYPE; # define YYSTYPE_IS_TRIVIAL 1 # define yystype YYSTYPE /* obsolescent; will be withdrawn */ -- cgit v0.10.2 From 706b78f37fbed8d81b6061359f28a315fb9b1d73 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 13 Jun 2013 12:57:44 +0100 Subject: dtc: ensure #line directives don't consume data from the next line Previously, the #line parsing regex ended with ({WS}+[0-9]+)?. The {WS} could match line-break characters. If the #line directive did not contain the optional flags field at the end, this could cause any integer data on the next line to be consumed as part of the #line directive parsing. This could cause syntax errors (i.e. #line parsing consuming the leading 0 from a hex literal 0x1234, leaving x1234 to be parsed as cell data, which is a syntax error), or invalid compilation results (i.e. simply consuming literal 1234 as part of the #line processing, thus removing it from the cell data). Fix this by replacing {WS} with [ \t] so that it can't match line-breaks. Convert all instances of {WS}, even though the other instances should be irrelevant for any well-formed #line directive. This is done for consistency and ultimate safety. [Cherry picked from DTC commit a1ee6f068e1c8dbc62873645037a353d7852d5cc] Reported-by: Ian Campbell Signed-off-by: Stephen Warren Acked-by: David Gibson Signed-off-by: Grant Likely diff --git a/scripts/dtc/dtc-lexer.l b/scripts/dtc/dtc-lexer.l index 254d5af..3b41bfc 100644 --- a/scripts/dtc/dtc-lexer.l +++ b/scripts/dtc/dtc-lexer.l @@ -71,7 +71,7 @@ static int pop_input_file(void); push_input_file(name); } -<*>^"#"(line)?{WS}+[0-9]+{WS}+{STRING}({WS}+[0-9]+)? { +<*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? { char *line, *tmp, *fn; /* skip text before line # */ line = yytext; diff --git a/scripts/dtc/dtc-lexer.lex.c_shipped b/scripts/dtc/dtc-lexer.lex.c_shipped index a6c5fcd..2d30f41 100644 --- a/scripts/dtc/dtc-lexer.lex.c_shipped +++ b/scripts/dtc/dtc-lexer.lex.c_shipped @@ -405,19 +405,19 @@ static yyconst flex_int16_t yy_accept[161] = static yyconst flex_int32_t yy_ec[256] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, - 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, + 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 2, 4, 5, 6, 1, 1, 7, 8, 1, - 1, 9, 10, 10, 11, 10, 12, 13, 14, 15, - 15, 15, 15, 15, 15, 15, 15, 16, 1, 17, - 18, 19, 10, 10, 20, 20, 20, 20, 20, 20, - 21, 21, 21, 21, 21, 22, 21, 21, 21, 21, - 21, 21, 21, 21, 23, 21, 21, 24, 21, 21, - 1, 25, 26, 1, 21, 1, 20, 27, 28, 29, - - 30, 20, 21, 21, 31, 21, 21, 32, 33, 34, - 35, 36, 21, 37, 38, 39, 40, 41, 21, 24, - 42, 21, 43, 44, 45, 1, 1, 1, 1, 1, + 1, 2, 5, 6, 7, 1, 1, 8, 9, 1, + 1, 10, 11, 11, 12, 11, 13, 14, 15, 16, + 16, 16, 16, 16, 16, 16, 16, 17, 1, 18, + 19, 20, 11, 11, 21, 21, 21, 21, 21, 21, + 22, 22, 22, 22, 22, 23, 22, 22, 22, 22, + 22, 22, 22, 22, 24, 22, 22, 25, 22, 22, + 1, 26, 27, 1, 22, 1, 21, 28, 29, 30, + + 31, 21, 22, 22, 32, 22, 22, 33, 34, 35, + 36, 37, 22, 38, 39, 40, 41, 42, 22, 25, + 43, 22, 44, 45, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, @@ -434,36 +434,36 @@ static yyconst flex_int32_t yy_ec[256] = 1, 1, 1, 1, 1 } ; -static yyconst flex_int32_t yy_meta[46] = +static yyconst flex_int32_t yy_meta[47] = { 0, - 1, 1, 1, 1, 1, 2, 3, 1, 2, 2, - 2, 4, 5, 5, 5, 6, 1, 1, 1, 7, - 8, 8, 8, 8, 1, 1, 7, 7, 7, 7, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 3, 1, 1 + 1, 1, 1, 1, 1, 1, 2, 3, 1, 2, + 2, 2, 4, 5, 5, 5, 6, 1, 1, 1, + 7, 8, 8, 8, 8, 1, 1, 7, 7, 7, + 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, + 8, 8, 8, 3, 1, 1 } ; static yyconst flex_int16_t yy_base[175] = { 0, - 0, 388, 381, 40, 41, 386, 71, 385, 34, 44, - 390, 395, 60, 62, 371, 112, 111, 111, 111, 104, - 370, 106, 371, 342, 124, 119, 0, 144, 395, 0, - 123, 0, 159, 153, 165, 167, 395, 130, 395, 382, - 395, 0, 372, 122, 395, 157, 374, 379, 350, 21, - 346, 349, 395, 395, 395, 395, 395, 362, 395, 395, - 181, 346, 342, 395, 359, 0, 191, 343, 190, 351, - 350, 0, 0, 0, 173, 362, 177, 367, 357, 329, - 335, 328, 337, 331, 206, 329, 334, 327, 395, 338, - 170, 314, 346, 345, 318, 325, 343, 158, 316, 212, - - 322, 319, 320, 395, 340, 336, 308, 305, 314, 304, - 295, 138, 208, 220, 395, 292, 305, 265, 264, 254, - 201, 222, 285, 275, 273, 270, 236, 235, 225, 115, - 395, 395, 252, 216, 216, 217, 214, 230, 209, 220, - 213, 239, 211, 217, 216, 209, 229, 395, 240, 225, - 206, 169, 395, 395, 116, 106, 99, 54, 395, 395, - 254, 260, 268, 272, 276, 282, 289, 293, 301, 309, - 313, 319, 327, 335 + 0, 385, 378, 40, 41, 383, 72, 382, 34, 44, + 388, 393, 61, 117, 368, 116, 115, 115, 115, 48, + 367, 107, 368, 339, 127, 120, 0, 147, 393, 0, + 127, 0, 133, 156, 168, 153, 393, 125, 393, 380, + 393, 0, 369, 127, 393, 160, 371, 377, 347, 21, + 343, 346, 393, 393, 393, 393, 393, 359, 393, 393, + 183, 343, 339, 393, 356, 0, 183, 340, 187, 348, + 347, 0, 0, 0, 178, 359, 195, 365, 354, 326, + 332, 325, 334, 328, 204, 326, 331, 324, 393, 335, + 150, 311, 343, 342, 315, 322, 340, 179, 313, 207, + + 319, 316, 317, 393, 337, 333, 305, 302, 311, 301, + 310, 190, 338, 337, 393, 307, 322, 301, 305, 277, + 208, 311, 307, 278, 271, 270, 248, 246, 213, 130, + 393, 393, 263, 235, 207, 221, 218, 229, 213, 213, + 206, 234, 218, 210, 208, 193, 219, 393, 223, 204, + 176, 157, 393, 393, 120, 106, 97, 119, 393, 393, + 245, 251, 259, 263, 267, 273, 280, 284, 292, 300, + 304, 310, 318, 326 } ; static yyconst flex_int16_t yy_def[175] = @@ -489,108 +489,108 @@ static yyconst flex_int16_t yy_def[175] = 160, 160, 160, 160 } ; -static yyconst flex_int16_t yy_nxt[441] = +static yyconst flex_int16_t yy_nxt[440] = { 0, - 12, 13, 14, 15, 16, 12, 17, 18, 12, 12, - 12, 19, 12, 12, 12, 12, 20, 21, 22, 23, - 23, 23, 23, 23, 12, 12, 23, 23, 23, 23, + 12, 13, 14, 13, 15, 16, 12, 17, 18, 12, + 12, 12, 19, 12, 12, 12, 12, 20, 21, 22, + 23, 23, 23, 23, 23, 12, 12, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, - 23, 23, 12, 24, 12, 25, 34, 35, 35, 25, - 81, 26, 26, 27, 27, 27, 34, 35, 35, 82, - 28, 36, 36, 36, 36, 159, 29, 28, 28, 28, - 28, 12, 13, 14, 15, 16, 30, 17, 18, 30, - 30, 30, 26, 30, 30, 30, 12, 20, 21, 22, - 31, 31, 31, 31, 31, 32, 12, 31, 31, 31, + 23, 23, 23, 12, 24, 12, 25, 34, 35, 35, + 25, 81, 26, 26, 27, 27, 27, 34, 35, 35, + 82, 28, 36, 36, 36, 53, 54, 29, 28, 28, + 28, 28, 12, 13, 14, 13, 15, 16, 30, 17, + 18, 30, 30, 30, 26, 30, 30, 30, 12, 20, + 21, 22, 31, 31, 31, 31, 31, 32, 12, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, - 31, 31, 31, 12, 24, 12, 39, 41, 45, 47, - 53, 54, 48, 56, 57, 61, 61, 47, 66, 45, - 48, 66, 66, 66, 39, 46, 40, 49, 59, 50, - 158, 51, 122, 52, 157, 49, 46, 50, 136, 63, - 137, 52, 156, 43, 40, 62, 65, 65, 65, 59, - 61, 61, 123, 65, 75, 69, 69, 69, 36, 36, - 65, 65, 65, 65, 70, 71, 72, 69, 69, 69, - 45, 46, 61, 61, 109, 77, 70, 71, 93, 110, - 68, 70, 71, 85, 85, 85, 66, 46, 155, 66, - - 66, 66, 69, 69, 69, 122, 59, 100, 100, 61, - 61, 70, 71, 100, 100, 148, 112, 154, 85, 85, - 85, 61, 61, 129, 129, 123, 129, 129, 135, 135, - 135, 142, 142, 148, 143, 149, 153, 135, 135, 135, - 142, 142, 160, 143, 152, 151, 150, 146, 145, 144, - 141, 140, 139, 149, 38, 38, 38, 38, 38, 38, - 38, 38, 42, 138, 134, 133, 42, 42, 44, 44, - 44, 44, 44, 44, 44, 44, 58, 58, 58, 58, - 64, 132, 64, 66, 131, 130, 66, 160, 66, 66, - 67, 128, 127, 67, 67, 67, 67, 73, 126, 73, - - 73, 76, 76, 76, 76, 76, 76, 76, 76, 78, - 78, 78, 78, 78, 78, 78, 78, 91, 125, 91, - 92, 124, 92, 92, 120, 92, 92, 121, 121, 121, - 121, 121, 121, 121, 121, 147, 147, 147, 147, 147, - 147, 147, 147, 119, 118, 117, 116, 115, 47, 114, - 110, 113, 111, 108, 107, 106, 48, 105, 104, 89, - 103, 102, 101, 99, 98, 97, 96, 95, 94, 79, - 77, 90, 89, 88, 59, 87, 86, 59, 84, 83, - 80, 79, 77, 74, 160, 60, 59, 55, 37, 160, - 33, 25, 26, 25, 11, 160, 160, 160, 160, 160, + 31, 31, 31, 31, 31, 12, 24, 12, 36, 36, + 36, 39, 41, 45, 47, 56, 57, 48, 61, 47, + 39, 159, 48, 66, 61, 45, 66, 66, 66, 158, + 46, 40, 49, 59, 50, 157, 51, 49, 52, 50, + 40, 63, 46, 52, 36, 36, 36, 156, 43, 62, + 65, 65, 65, 59, 136, 68, 137, 65, 75, 69, + 69, 69, 70, 71, 65, 65, 65, 65, 70, 71, + 72, 69, 69, 69, 61, 46, 45, 155, 154, 66, + 70, 71, 66, 66, 66, 122, 85, 85, 85, 59, + + 69, 69, 69, 46, 77, 100, 109, 93, 100, 70, + 71, 110, 112, 122, 129, 123, 153, 85, 85, 85, + 135, 135, 135, 148, 148, 160, 135, 135, 135, 152, + 142, 142, 142, 123, 143, 142, 142, 142, 151, 143, + 150, 146, 145, 149, 149, 38, 38, 38, 38, 38, + 38, 38, 38, 42, 144, 141, 140, 42, 42, 44, + 44, 44, 44, 44, 44, 44, 44, 58, 58, 58, + 58, 64, 139, 64, 66, 138, 134, 66, 133, 66, + 66, 67, 132, 131, 67, 67, 67, 67, 73, 130, + 73, 73, 76, 76, 76, 76, 76, 76, 76, 76, + + 78, 78, 78, 78, 78, 78, 78, 78, 91, 160, + 91, 92, 129, 92, 92, 128, 92, 92, 121, 121, + 121, 121, 121, 121, 121, 121, 147, 147, 147, 147, + 147, 147, 147, 147, 127, 126, 125, 124, 61, 61, + 120, 119, 118, 117, 116, 115, 47, 114, 110, 113, + 111, 108, 107, 106, 48, 105, 104, 89, 103, 102, + 101, 99, 98, 97, 96, 95, 94, 79, 77, 90, + 89, 88, 59, 87, 86, 59, 84, 83, 80, 79, + 77, 74, 160, 60, 59, 55, 37, 160, 33, 25, + 26, 25, 11, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, - 160, 160, 160, 160, 160, 160, 160, 160, 160, 160 + 160, 160, 160, 160, 160, 160, 160, 160, 160 } ; -static yyconst flex_int16_t yy_chk[441] = +static yyconst flex_int16_t yy_chk[440] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 4, 9, 9, 9, 10, - 50, 4, 5, 5, 5, 5, 10, 10, 10, 50, - 5, 13, 13, 14, 14, 158, 5, 5, 5, 5, - 5, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 1, 1, 1, 1, 1, 1, 4, 9, 9, 9, + 10, 50, 4, 5, 5, 5, 5, 10, 10, 10, + 50, 5, 13, 13, 13, 20, 20, 5, 5, 5, + 5, 5, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 16, 17, 18, 19, - 20, 20, 19, 22, 22, 25, 25, 26, 31, 44, - 26, 31, 31, 31, 38, 18, 16, 19, 31, 19, - 157, 19, 112, 19, 156, 26, 44, 26, 130, 26, - 130, 26, 155, 17, 38, 25, 28, 28, 28, 28, - 33, 33, 112, 28, 46, 34, 34, 34, 36, 36, - 28, 28, 28, 28, 34, 34, 34, 35, 35, 35, - 75, 46, 61, 61, 98, 77, 35, 35, 77, 98, - 33, 91, 91, 61, 61, 61, 67, 75, 152, 67, - - 67, 67, 69, 69, 69, 121, 67, 85, 85, 113, - 113, 69, 69, 100, 100, 143, 100, 151, 85, 85, - 85, 114, 114, 122, 122, 121, 129, 129, 135, 135, - 135, 138, 138, 147, 138, 143, 150, 129, 129, 129, - 142, 142, 149, 142, 146, 145, 144, 141, 140, 139, - 137, 136, 134, 147, 161, 161, 161, 161, 161, 161, - 161, 161, 162, 133, 128, 127, 162, 162, 163, 163, - 163, 163, 163, 163, 163, 163, 164, 164, 164, 164, - 165, 126, 165, 166, 125, 124, 166, 123, 166, 166, - 167, 120, 119, 167, 167, 167, 167, 168, 118, 168, - - 168, 169, 169, 169, 169, 169, 169, 169, 169, 170, - 170, 170, 170, 170, 170, 170, 170, 171, 117, 171, - 172, 116, 172, 172, 111, 172, 172, 173, 173, 173, - 173, 173, 173, 173, 173, 174, 174, 174, 174, 174, - 174, 174, 174, 110, 109, 108, 107, 106, 105, 103, - 102, 101, 99, 97, 96, 95, 94, 93, 92, 90, - 88, 87, 86, 84, 83, 82, 81, 80, 79, 78, - 76, 71, 70, 68, 65, 63, 62, 58, 52, 51, - 49, 48, 47, 43, 40, 24, 23, 21, 15, 11, - 8, 6, 3, 2, 160, 160, 160, 160, 160, 160, + 7, 7, 7, 7, 7, 7, 7, 7, 14, 14, + 14, 16, 17, 18, 19, 22, 22, 19, 25, 26, + 38, 158, 26, 31, 33, 44, 31, 31, 31, 157, + 18, 16, 19, 31, 19, 156, 19, 26, 19, 26, + 38, 26, 44, 26, 36, 36, 36, 155, 17, 25, + 28, 28, 28, 28, 130, 33, 130, 28, 46, 34, + 34, 34, 91, 91, 28, 28, 28, 28, 34, 34, + 34, 35, 35, 35, 61, 46, 75, 152, 151, 67, + 35, 35, 67, 67, 67, 112, 61, 61, 61, 67, + + 69, 69, 69, 75, 77, 85, 98, 77, 100, 69, + 69, 98, 100, 121, 129, 112, 150, 85, 85, 85, + 135, 135, 135, 143, 147, 149, 129, 129, 129, 146, + 138, 138, 138, 121, 138, 142, 142, 142, 145, 142, + 144, 141, 140, 143, 147, 161, 161, 161, 161, 161, + 161, 161, 161, 162, 139, 137, 136, 162, 162, 163, + 163, 163, 163, 163, 163, 163, 163, 164, 164, 164, + 164, 165, 134, 165, 166, 133, 128, 166, 127, 166, + 166, 167, 126, 125, 167, 167, 167, 167, 168, 124, + 168, 168, 169, 169, 169, 169, 169, 169, 169, 169, + + 170, 170, 170, 170, 170, 170, 170, 170, 171, 123, + 171, 172, 122, 172, 172, 120, 172, 172, 173, 173, + 173, 173, 173, 173, 173, 173, 174, 174, 174, 174, + 174, 174, 174, 174, 119, 118, 117, 116, 114, 113, + 111, 110, 109, 108, 107, 106, 105, 103, 102, 101, + 99, 97, 96, 95, 94, 93, 92, 90, 88, 87, + 86, 84, 83, 82, 81, 80, 79, 78, 76, 71, + 70, 68, 65, 63, 62, 58, 52, 51, 49, 48, + 47, 43, 40, 24, 23, 21, 15, 11, 8, 6, + 3, 2, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, - 160, 160, 160, 160, 160, 160, 160, 160, 160, 160 + 160, 160, 160, 160, 160, 160, 160, 160, 160 } ; static yy_state_type yy_last_accepting_state; -- cgit v0.10.2 From c9bfbb31af7c8428267b34eb9706a621ac219a28 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Thu, 13 Jun 2013 15:31:28 -0400 Subject: tulip: Properly check dma mapping result Tulip throws an error when dma debugging is enabled, as it doesn't properly check dma mapping results with dma_mapping_error() durring tx ring refills. Easy fix, just add it in, and drop the frame if the mapping is bad Signed-off-by: Neil Horman CC: Grant Grundler CC: "David S. Miller" Reviewed-by: Grant Grundler Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/dec/tulip/interrupt.c b/drivers/net/ethernet/dec/tulip/interrupt.c index 28a5e42..92306b3 100644 --- a/drivers/net/ethernet/dec/tulip/interrupt.c +++ b/drivers/net/ethernet/dec/tulip/interrupt.c @@ -76,6 +76,12 @@ int tulip_refill_rx(struct net_device *dev) mapping = pci_map_single(tp->pdev, skb->data, PKT_BUF_SZ, PCI_DMA_FROMDEVICE); + if (dma_mapping_error(&tp->pdev->dev, mapping)) { + dev_kfree_skb(skb); + tp->rx_buffers[entry].skb = NULL; + break; + } + tp->rx_buffers[entry].mapping = mapping; tp->rx_ring[entry].buffer1 = cpu_to_le32(mapping); -- cgit v0.10.2 From aaf9522d62d18626a60f7f2080671d853d9e8681 Mon Sep 17 00:00:00 2001 From: Benjamin Poirier Date: Thu, 13 Jun 2013 09:09:47 -0400 Subject: netiucv: Hold rtnl between name allocation and device registration. fixes a race condition between concurrent initializations of netiucv devices that try to use the same name. sysfs: cannot create duplicate filename '/devices/iucv/netiucv2' [...] Call Trace: ([<00000000002edea4>] sysfs_add_one+0xb0/0xdc) [<00000000002eecd4>] create_dir+0x80/0xfc [<00000000002eee38>] sysfs_create_dir+0xe8/0x118 [<00000000003835a8>] kobject_add_internal+0x120/0x2d0 [<00000000003839d6>] kobject_add+0x62/0x9c [<00000000003d9564>] device_add+0xcc/0x510 [<000003e00212c7b4>] netiucv_register_device+0xc0/0x1ec [netiucv] Signed-off-by: Benjamin Poirier Tested-by: Ursula Braun Signed-off-by: David S. Miller diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c index 4ffa66c..9ca3996 100644 --- a/drivers/s390/net/netiucv.c +++ b/drivers/s390/net/netiucv.c @@ -2040,6 +2040,7 @@ static struct net_device *netiucv_init_netdevice(char *username, char *userdata) netiucv_setup_netdevice); if (!dev) return NULL; + rtnl_lock(); if (dev_alloc_name(dev, dev->name) < 0) goto out_netdev; @@ -2061,6 +2062,7 @@ static struct net_device *netiucv_init_netdevice(char *username, char *userdata) out_fsm: kfree_fsm(privptr->fsm); out_netdev: + rtnl_unlock(); free_netdev(dev); return NULL; } @@ -2100,6 +2102,7 @@ static ssize_t conn_write(struct device_driver *drv, rc = netiucv_register_device(dev); if (rc) { + rtnl_unlock(); IUCV_DBF_TEXT_(setup, 2, "ret %d from netiucv_register_device\n", rc); goto out_free_ndev; @@ -2109,7 +2112,8 @@ static ssize_t conn_write(struct device_driver *drv, priv = netdev_priv(dev); SET_NETDEV_DEV(dev, priv->dev); - rc = register_netdev(dev); + rc = register_netdevice(dev); + rtnl_unlock(); if (rc) goto out_unreg; -- cgit v0.10.2 From c5c7774d7eb4397891edca9ebdf750ba90977a69 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Wed, 12 Jun 2013 14:26:44 -0400 Subject: sctp: fully initialize sctp_outq in sctp_outq_init In commit 2f94aabd9f6c925d77aecb3ff020f1cc12ed8f86 (refactor sctp_outq_teardown to insure proper re-initalization) we modified sctp_outq_teardown to use sctp_outq_init to fully re-initalize the outq structure. Steve West recently asked me why I removed the q->error = 0 initalization from sctp_outq_teardown. I did so because I was operating under the impression that sctp_outq_init would properly initalize that value for us, but it doesn't. sctp_outq_init operates under the assumption that the outq struct is all 0's (as it is when called from sctp_association_init), but using it in __sctp_outq_teardown violates that assumption. We should do a memset in sctp_outq_init to ensure that the entire structure is in a known state there instead. Signed-off-by: Neil Horman Reported-by: "West, Steve (NSN - US/Fort Worth)" CC: Vlad Yasevich CC: netdev@vger.kernel.org CC: davem@davemloft.net Acked-by: Vlad Yasevich Signed-off-by: David S. Miller diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 32a4625..be35e2d 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -206,6 +206,8 @@ static inline int sctp_cacc_skip(struct sctp_transport *primary, */ void sctp_outq_init(struct sctp_association *asoc, struct sctp_outq *q) { + memset(q, 0, sizeof(struct sctp_outq)); + q->asoc = asoc; INIT_LIST_HEAD(&q->out_chunk_list); INIT_LIST_HEAD(&q->control_chunk_list); @@ -213,11 +215,7 @@ void sctp_outq_init(struct sctp_association *asoc, struct sctp_outq *q) INIT_LIST_HEAD(&q->sacked); INIT_LIST_HEAD(&q->abandoned); - q->fast_rtx = 0; - q->outstanding_bytes = 0; q->empty = 1; - q->cork = 0; - q->out_qlen = 0; } /* Free the outqueue structure and any related pending chunks. -- cgit v0.10.2 From 5e85b364481af75e84228cd8704bd490493818a2 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Mon, 10 Jun 2013 10:10:25 +0300 Subject: mei: init: Flush scheduled work before resetting the device Flushing pending work items before resetting the device makes more sense than doing so afterwards. Some of them, like e.g. the NFC initialization one, find themselves with client IDs changed after the reset, eventually leading to trigger a client.c:mei_me_cl_by_id() warning after a few modprobe/rmmod cycles. Signed-off-by: Samuel Ortiz Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 713d89f..f580d30 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -197,6 +197,8 @@ void mei_stop(struct mei_device *dev) { dev_dbg(&dev->pdev->dev, "stopping the device.\n"); + flush_scheduled_work(); + mutex_lock(&dev->device_lock); cancel_delayed_work(&dev->timer_work); @@ -210,8 +212,6 @@ void mei_stop(struct mei_device *dev) mutex_unlock(&dev->device_lock); - flush_scheduled_work(); - mei_watchdog_unregister(dev); } EXPORT_SYMBOL_GPL(mei_stop); -- cgit v0.10.2 From 2753ff53d4158dbb394b3a2064001283fa9a8701 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Mon, 10 Jun 2013 10:10:26 +0300 Subject: mei: nfc: fix nfc device freeing The nfc_dev is a static variable and is not cleaned properly upon reset mainly ndev->cl and ndev->cl_info are not set to NULL after freeing which mei_stop:198: mei_me 0000:00:16.0: stopping the device. [ 404.253427] general protection fault: 0000 [#2] SMP [ 404.253437] Modules linked in: mei_me(-) binfmt_misc snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device edd af_packet cpufreq_conservative cpufreq_userspace cpufreq_powersave fuse loop dm_mod hid_generic usbhid hid coretemp acpi_cpufreq mperf kvm_intel kvm crc32c_intel ghash_clmulni_intel aesni_intel ablk_helper cryptd lrw gf128mul snd_hda_codec_hdmi glue_helper aes_x86_64 e1000e snd_hda_intel snd_hda_codec ehci_pci iTCO_wdt iTCO_vendor_support ehci_hcd snd_hwdep xhci_hcd snd_pcm usbcore ptp mei sg microcode snd_timer pps_core i2c_i801 snd pcspkr battery rtc_cmos lpc_ich mfd_core soundcore usb_common snd_page_alloc ac ext3 jbd mbcache drm_kms_helper drm intel_agp i2c_algo_bit intel_gtt i2c_core sd_mod crc_t10dif thermal fan video button processor thermal_sys hwmon ahci libahci libata scsi_mod [last unloaded: mei_me] [ 404.253591] CPU: 0 PID: 5551 Comm: modprobe Tainted: G D W 3.10.0-rc3 #1 [ 404.253611] task: ffff880143cd8300 ti: ffff880144a2a000 task.ti: ffff880144a2a000 [ 404.253619] RIP: 0010:[] [] device_del+0x1d/0x1d0 [ 404.253638] RSP: 0018:ffff880144a2bcf8 EFLAGS: 00010206 [ 404.253645] RAX: 2020302e30202030 RBX: ffff880144fdb000 RCX: 0000000000000086 [ 404.253652] RDX: 0000000000000001 RSI: 0000000000000086 RDI: ffff880144fdb000 [ 404.253659] RBP: ffff880144a2bd18 R08: 0000000000000651 R09: 0000000000000006 [ 404.253666] R10: 0000000000000651 R11: 0000000000000006 R12: ffff880144fdb000 [ 404.253673] R13: ffff880149371098 R14: ffff880144482c00 R15: ffffffffa04710e0 [ 404.253681] FS: 00007f251c59a700(0000) GS:ffff88014e200000(0000) knlGS:0000000000000000 [ 404.253689] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 404.253696] CR2: ffffffffff600400 CR3: 0000000145319000 CR4: 00000000001407f0 [ 404.253703] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 404.253710] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 404.253716] Stack: [ 404.253720] ffff880144fdb000 ffff880143ffe000 ffff880149371098 ffffffffa0471000 [ 404.253732] ffff880144a2bd38 ffffffff8133502d ffff88014e20cf48 ffff880143ffe1d8 [ 404.253744] ffff880144a2bd48 ffffffffa02a4749 ffff880144a2bd58 ffffffffa02a4ba1 [ 404.253755] Call Trace: [ 404.253766] [] device_unregister+0x1d/0x60 [ 404.253787] [] mei_cl_remove_device+0x9/0x10 [mei] [ 404.253804] [] mei_nfc_host_exit+0x21/0x30 [mei] [ 404.253819] [] mei_stop+0x3d/0x90 [mei] [ 404.253830] [] mei_me_remove+0x60/0xe0 [mei_me] [ 404.253843] [] pci_device_remove+0x37/0xb0 [ 404.253855] [] __device_release_driver+0x98/0x100 [ 404.253865] [] driver_detach+0xb0/0xc0 [ 404.253876] [] bus_remove_driver+0x8f/0x120 [ 404.253891] [] ? try_to_wake_up+0x2b0/0x2b0 [ 404.253903] [] driver_unregister+0x58/0x90 [ 404.253913] [] pci_unregister_driver+0x2b/0xb0 [ 404.253924] [] mei_me_driver_exit+0x10/0xdcc [mei_me] [ 404.253936] [] SyS_delete_module+0x198/0x2b0 [ 404.253949] [] ? do_page_fault+0x9/0x10 [ 404.253961] [] system_call_fastpath+0x16/0x1b [ 404.253967] Code: 41 5c 41 5d 41 5e 41 5f c9 c3 0f 1f 40 00 55 48 89 e5 41 56 41 55 41 54 49 89 fc 53 48 8b 87 88 00 00 00 4c 8b 37 48 85 c0 74 18 <48> 8b 78 78 4c 89 e2 be 02 00 00 00 48 81 c7 f8 00 00 00 e8 3b [ 404.254048] RIP [] device_del+0x1d/0x1d0 Cc: Samuel Ortiz Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/misc/mei/nfc.c b/drivers/misc/mei/nfc.c index 3adf8a7..d0c6907 100644 --- a/drivers/misc/mei/nfc.c +++ b/drivers/misc/mei/nfc.c @@ -142,6 +142,8 @@ static void mei_nfc_free(struct mei_nfc_dev *ndev) mei_cl_unlink(ndev->cl_info); kfree(ndev->cl_info); } + + memset(ndev, 0, sizeof(struct mei_nfc_dev)); } static int mei_nfc_build_bus_name(struct mei_nfc_dev *ndev) -- cgit v0.10.2 From 42f132febff3b7b42c6c9dbfc151f29233be3132 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Wed, 5 Jun 2013 10:51:13 +0300 Subject: mei: me: clear interrupts on the resume path We need to clear pending interrupts on the resume path. This brings the device into defined state before starting the reset flow This should solve suspend/resume issues: mei_me : wait hw ready failed. status = 0x0 mei_me : version message write failed Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index a727464..0f26832 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -325,6 +325,7 @@ static int mei_me_pci_resume(struct device *device) mutex_lock(&dev->device_lock); dev->dev_state = MEI_DEV_POWER_UP; + mei_clear_interrupts(dev); mei_reset(dev, 1); mutex_unlock(&dev->device_lock); -- cgit v0.10.2 From 574780fd5e6ec52bd43e0bdb777a19e4c4c6aa9c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rn=20Engel?= Date: Thu, 30 May 2013 16:36:51 -0400 Subject: target/iscsi: don't corrupt bh_count in iscsit_stop_time2retain_timer() Here is a fun one. Bug seems to have been introduced by commit 140854cb, almost two years ago. I have no idea why we only started seeing it now, but we did. Rough callgraph: core_tpg_set_initiator_node_queue_depth() `-> spin_lock_irqsave(&tpg->session_lock, flags); `-> lio_tpg_shutdown_session() `-> iscsit_stop_time2retain_timer() `-> spin_unlock_bh(&se_tpg->session_lock); `-> spin_lock_bh(&se_tpg->session_lock); `-> spin_unlock_irqrestore(&tpg->session_lock, flags); core_tpg_set_initiator_node_queue_depth() used to call spin_lock_bh(), but 140854cb changed that to spin_lock_irqsave(). However, lio_tpg_shutdown_session() still claims to be called with spin_lock_bh() held, as does iscsit_stop_time2retain_timer(): * Called with spin_lock_bh(&struct se_portal_group->session_lock) held Stale documentation is mostly annoying, but in this case the dropping the lock with the _bh variant is plain wrong. It is also wrong to drop locks two functions below the lock-holder, but I will ignore that bit for now. After some more locking and unlocking we eventually hit this backtrace: ------------[ cut here ]------------ WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0xe8/0x100() Pid: 24645, comm: lio_helper.py Tainted: G O 3.6.11+ Call Trace: [] warn_slowpath_common+0x7f/0xc0 [] ? iscsit_inc_conn_usage_count+0x37/0x50 [iscsi_target_mod] [] warn_slowpath_null+0x1a/0x20 [] local_bh_enable_ip+0xe8/0x100 [] _raw_spin_unlock_bh+0x15/0x20 [] iscsit_inc_conn_usage_count+0x37/0x50 [iscsi_target_mod] [] iscsit_stop_session+0xfa/0x1c0 [iscsi_target_mod] [] lio_tpg_shutdown_session+0x7b/0x90 [iscsi_target_mod] [] core_tpg_set_initiator_node_queue_depth+0xe4/0x290 [target_core_mod] [] iscsit_tpg_set_initiator_node_queue_depth+0x12/0x20 [iscsi_target_mod] [] lio_target_nacl_store_cmdsn_depth+0xa9/0x180 [iscsi_target_mod] [] target_fabric_nacl_base_attr_store+0x39/0x40 [target_core_mod] [] configfs_write_file+0xbd/0x120 [] vfs_write+0xc6/0x180 [] sys_write+0x51/0x90 [] system_call_fastpath+0x16/0x1b ---[ end trace 3747632b9b164652 ]--- As a pure band-aid, this patch drops the _bh. Signed-off-by: Joern Engel Cc: stable Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c index 8e6298c..dcb199d 100644 --- a/drivers/target/iscsi/iscsi_target_erl0.c +++ b/drivers/target/iscsi/iscsi_target_erl0.c @@ -842,11 +842,11 @@ int iscsit_stop_time2retain_timer(struct iscsi_session *sess) return 0; sess->time2retain_timer_flags |= ISCSI_TF_STOP; - spin_unlock_bh(&se_tpg->session_lock); + spin_unlock(&se_tpg->session_lock); del_timer_sync(&sess->time2retain_timer); - spin_lock_bh(&se_tpg->session_lock); + spin_lock(&se_tpg->session_lock); sess->time2retain_timer_flags &= ~ISCSI_TF_RUNNING; pr_debug("Stopped Time2Retain Timer for SID: %u\n", sess->sid); -- cgit v0.10.2 From b5aff3d2747bea08b386edd070941a45611ffe51 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Wed, 5 Jun 2013 09:54:17 -0700 Subject: tcm_qla2xxx: Fix residual for underrun commands that fail Suppose an initiator sends a DATA IN command with an allocation length shorter than the FC transfer length -- we get a target message like TARGET_CORE[qla2xxx]: Expected Transfer Length: 256 does not match SCSI CDB Length: 0 for SAM Opcode: 0x12 In that case, the target core adjusts the data_length and sets se_cmd->residual_count for the underrun. But now suppose that command fails and we end up in tcm_qla2xxx_queue_status() -- that function unconditionally overwrites residual_count with the already adjusted data_length, and the initiator will burp with a message like qla2xxx [0000:00:06.0]-301d:0: Dropped frame(s) detected (0x100 of 0x100 bytes). Fix this by adding on to the existing underflow residual count instead. Signed-off-by: Roland Dreier Cc: Giridhar Malavali Cc: Chad Dupuis Cc: stable Signed-off-by: Nicholas Bellinger diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 7a3870f..66b0b26 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -688,8 +688,12 @@ static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen * for qla_tgt_xmit_response LLD code */ + if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { + se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; + se_cmd->residual_count = 0; + } se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; - se_cmd->residual_count = se_cmd->data_length; + se_cmd->residual_count += se_cmd->data_length; cmd->bufflen = 0; } -- cgit v0.10.2 From 47ad2fcba9ddd0630acccb13c71f19a818947751 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 27 May 2013 16:38:19 +1000 Subject: xfs: don't emit v5 superblock warnings on write We write the superblock every 30s or so which results in the verifier being called. Right now that results in this output every 30s: XFS (vda): Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled! Use of these features in this kernel is at your own risk! And spamming the logs. We don't need to check for whether we support v5 superblocks or whether there are feature bits we don't support set as these are only relevant when we first mount the filesytem. i.e. on superblock read. Hence for the write verification we can just skip all the checks (and hence verbose output) altogether. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Ben Myers (cherry picked from commit 34510185abeaa5be9b178a41c0a03d30aec3db7e) diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index f6bfbd7..e8e310c 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -314,7 +314,8 @@ STATIC int xfs_mount_validate_sb( xfs_mount_t *mp, xfs_sb_t *sbp, - bool check_inprogress) + bool check_inprogress, + bool check_version) { /* @@ -337,9 +338,10 @@ xfs_mount_validate_sb( /* * Version 5 superblock feature mask validation. Reject combinations the - * kernel cannot support up front before checking anything else. + * kernel cannot support up front before checking anything else. For + * write validation, we don't need to check feature masks. */ - if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) { + if (check_version && XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) { xfs_alert(mp, "Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled!\n" "Use of these features in this kernel is at your own risk!"); @@ -675,7 +677,8 @@ xfs_sb_to_disk( static int xfs_sb_verify( - struct xfs_buf *bp) + struct xfs_buf *bp, + bool check_version) { struct xfs_mount *mp = bp->b_target->bt_mount; struct xfs_sb sb; @@ -686,7 +689,8 @@ xfs_sb_verify( * Only check the in progress field for the primary superblock as * mkfs.xfs doesn't clear it from secondary superblocks. */ - return xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR); + return xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR, + check_version); } /* @@ -719,7 +723,7 @@ xfs_sb_read_verify( goto out_error; } } - error = xfs_sb_verify(bp); + error = xfs_sb_verify(bp, true); out_error: if (error) { @@ -758,7 +762,7 @@ xfs_sb_write_verify( struct xfs_buf_log_item *bip = bp->b_fspriv; int error; - error = xfs_sb_verify(bp); + error = xfs_sb_verify(bp, false); if (error) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, error); -- cgit v0.10.2 From 5170711df79b284cf95b3924322e8ac4c0fd6c76 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 12 Jun 2013 12:19:07 +1000 Subject: xfs: fix implicit padding in directory and attr CRC formats Michael L. Semon has been testing CRC patches on a 32 bit system and been seeing assert failures in the directory code from xfs/080. Thanks to Michael's heroic efforts with printk debugging, we found that the problem was that the last free space being left in the directory structure was too small to fit a unused tag structure and it was being corrupted and attempting to log a region out of bounds. Hence the assert failure looked something like: ..... #5 calling xfs_dir2_data_log_unused() 36 32 #1 4092 4095 4096 #2 8182 8183 4096 XFS: Assertion failed: first <= last && last < BBTOB(bp->b_length), file: fs/xfs/xfs_trans_buf.c, line: 568 Where #1 showed the first region of the dup being logged (i.e. the last 4 bytes of a directory buffer) and #2 shows the corrupt values being calculated from the length of the dup entry which overflowed the size of the buffer. It turns out that the problem was not in the logging code, nor in the freespace handling code. It is an initial condition bug that only shows up on 32 bit systems. When a new buffer is initialised, where's the freespace that is set up: [ 172.316249] calling xfs_dir2_leaf_addname() from xfs_dir_createname() [ 172.316346] #9 calling xfs_dir2_data_log_unused() [ 172.316351] #1 calling xfs_trans_log_buf() 60 63 4096 [ 172.316353] #2 calling xfs_trans_log_buf() 4094 4095 4096 Note the offset of the first region being logged? It's 60 bytes into the buffer. Once I saw that, I pretty much knew that the bug was going to be caused by this. Essentially, all direct entries are rounded to 8 bytes in length, and all entries start with an 8 byte alignment. This means that we can decode inplace as variables are naturally aligned. With the directory data supposedly starting on a 8 byte boundary, and all entries padded to 8 bytes, the minimum freespace in a directory block is supposed to be 8 bytes, which is large enough to fit a unused data entry structure (6 bytes in size). The fact we only have 4 bytes of free space indicates a directory data block alignment problem. And what do you know - there's an implicit hole in the directory data block header for the CRC format, which means the header is 60 byte on 32 bit intel systems and 64 bytes on 64 bit systems. Needs padding. And while looking at the structures, I found the same problem in the attr leaf header. Fix them both. Note that this only affects 32 bit systems with CRCs enabled. Everything else is just fine. Note that CRC enabled filesystems created before this fix on such systems will not be readable with this fix applied. Reported-by: Michael L. Semon Debugged-by: Michael L. Semon Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 8a1fd2950e1fe267e11fc8c85dcaa6b023b51b60) diff --git a/fs/xfs/xfs_attr_leaf.h b/fs/xfs/xfs_attr_leaf.h index f9d7846..444a770 100644 --- a/fs/xfs/xfs_attr_leaf.h +++ b/fs/xfs/xfs_attr_leaf.h @@ -128,6 +128,7 @@ struct xfs_attr3_leaf_hdr { __u8 holes; __u8 pad1; struct xfs_attr_leaf_map freemap[XFS_ATTR_LEAF_MAPSIZE]; + __be32 pad2; /* 64 bit alignment */ }; #define XFS_ATTR3_LEAF_CRC_OFF (offsetof(struct xfs_attr3_leaf_hdr, info.crc)) diff --git a/fs/xfs/xfs_dir2_format.h b/fs/xfs/xfs_dir2_format.h index 995f1f5..7826782b 100644 --- a/fs/xfs/xfs_dir2_format.h +++ b/fs/xfs/xfs_dir2_format.h @@ -266,6 +266,7 @@ struct xfs_dir3_blk_hdr { struct xfs_dir3_data_hdr { struct xfs_dir3_blk_hdr hdr; xfs_dir2_data_free_t best_free[XFS_DIR2_DATA_FD_COUNT]; + __be32 pad; /* 64 bit alignment */ }; #define XFS_DIR3_DATA_CRC_OFF offsetof(struct xfs_dir3_data_hdr, hdr.crc) @@ -477,7 +478,7 @@ struct xfs_dir3_leaf_hdr { struct xfs_da3_blkinfo info; /* header for da routines */ __be16 count; /* count of entries */ __be16 stale; /* count of stale entries */ - __be32 pad; + __be32 pad; /* 64 bit alignment */ }; struct xfs_dir3_icleaf_hdr { @@ -715,7 +716,7 @@ struct xfs_dir3_free_hdr { __be32 firstdb; /* db of first entry */ __be32 nvalid; /* count of valid entries */ __be32 nused; /* count of used entries */ - __be32 pad; /* 64 bit alignment. */ + __be32 pad; /* 64 bit alignment */ }; struct xfs_dir3_free { -- cgit v0.10.2 From 088c9f67c3f53339d2bc20b42a9cb904901fdc5d Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 12 Jun 2013 12:19:08 +1000 Subject: xfs: ensure btree root split sets blkno correctly For CRC enabled filesystems, the BMBT is rooted in an inode, so it passes through a different code path on root splits than the freespace and inode btrees. This is much less traversed by xfstests than the other trees. When testing on a 1k block size filesystem, I've been seeing ASSERT failures in generic/234 like: XFS: Assertion failed: cur->bc_btnum != XFS_BTNUM_BMAP || cur->bc_private.b.allocated == 0, file: fs/xfs/xfs_btree.c, line: 317 which are generally preceded by a lblock check failure. I noticed this in the bmbt stats: $ pminfo -f xfs.btree.block_map xfs.btree.block_map.lookup value 39135 xfs.btree.block_map.compare value 268432 xfs.btree.block_map.insrec value 15786 xfs.btree.block_map.delrec value 13884 xfs.btree.block_map.newroot value 2 xfs.btree.block_map.killroot value 0 ..... Very little coverage of root splits and merges. Indeed, on a 4k filesystem, block_map.newroot and block_map.killroot are both zero. i.e. the code is not exercised at all, and it's the only generic btree infrastructure operation that is not exercised by a default run of xfstests. Turns out that on a 1k filesystem, generic/234 accounts for one of those two root splits, and that is somewhat of a smoking gun. In fact, it's the same problem we saw in the directory/attr code where headers are memcpy()d from one block to another without updating the self describing metadata. Simple fix - when copying the header out of the root block, make sure the block number is updated correctly. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit ade1335afef556df6538eb02e8c0dc91fbd9cc37) diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index 8804b8a..0903960 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -2544,7 +2544,17 @@ xfs_btree_new_iroot( if (error) goto error0; + /* + * we can't just memcpy() the root in for CRC enabled btree blocks. + * In that case have to also ensure the blkno remains correct + */ memcpy(cblock, block, xfs_btree_block_len(cur)); + if (cur->bc_flags & XFS_BTREE_CRC_BLOCKS) { + if (cur->bc_flags & XFS_BTREE_LONG_PTRS) + cblock->bb_u.l.bb_blkno = cpu_to_be64(cbp->b_bn); + else + cblock->bb_u.s.bb_blkno = cpu_to_be64(cbp->b_bn); + } be16_add_cpu(&block->bb_level, 1); xfs_btree_set_numrecs(block, 1); -- cgit v0.10.2 From d302cf1d316dca5f567e89872cf5d475c9a55f74 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 12 Jun 2013 12:19:06 +1000 Subject: xfs: don't shutdown log recovery on validation errors Unfortunately, we cannot guarantee that items logged multiple times and replayed by log recovery do not take objects back in time. When they are taken back in time, the go into an intermediate state which is corrupt, and hence verification that occurs on this intermediate state causes log recovery to abort with a corruption shutdown. Instead of causing a shutdown and unmountable filesystem, don't verify post-recovery items before they are written to disk. This is less than optimal, but there is no way to detect this issue for non-CRC filesystems If log recovery successfully completes, this will be undone and the object will be consistent by subsequent transactions that are replayed, so in most cases we don't need to take drastic action. For CRC enabled filesystems, leave the verifiers in place - we need to call them to recalculate the CRCs on the objects anyway. This recovery problem can be solved for such filesystems - we have a LSN stamped in all metadata at writeback time that we can to determine whether the item should be replayed or not. This is a separate piece of work, so is not addressed by this patch. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 9222a9cf86c0d64ffbedf567412b55da18763aa3) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 45a85ff..7cf5e4e 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1845,7 +1845,13 @@ xlog_recover_do_inode_buffer( xfs_agino_t *buffer_nextp; trace_xfs_log_recover_buf_inode_buf(mp->m_log, buf_f); - bp->b_ops = &xfs_inode_buf_ops; + + /* + * Post recovery validation only works properly on CRC enabled + * filesystems. + */ + if (xfs_sb_version_hascrc(&mp->m_sb)) + bp->b_ops = &xfs_inode_buf_ops; inodes_per_buf = BBTOB(bp->b_io_length) >> mp->m_sb.sb_inodelog; for (i = 0; i < inodes_per_buf; i++) { @@ -2205,7 +2211,16 @@ xlog_recover_do_reg_buffer( /* Shouldn't be any more regions */ ASSERT(i == item->ri_total); - xlog_recovery_validate_buf_type(mp, bp, buf_f); + /* + * We can only do post recovery validation on items on CRC enabled + * fielsystems as we need to know when the buffer was written to be able + * to determine if we should have replayed the item. If we replay old + * metadata over a newer buffer, then it will enter a temporarily + * inconsistent state resulting in verification failures. Hence for now + * just avoid the verification stage for non-crc filesystems + */ + if (xfs_sb_version_hascrc(&mp->m_sb)) + xlog_recovery_validate_buf_type(mp, bp, buf_f); } /* -- cgit v0.10.2 From 29ce3785b22da47c49f4ef6e14b9014fa5dee261 Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Wed, 8 May 2013 14:05:34 -0700 Subject: idle: Enable interrupts in the weak arch_cpu_idle() implementation PARISC bootup triggers the warning at kernel/cpu/idle.c:96. That's caused by the weak arch_cpu_idle() implementation, which is provided to avoid that architectures implement idle_poll over and over. The switchover to polling mode happens in the first call of the weak arch_cpu_idle() implementation, but that code fails to reenable interrupts and therefor triggers the warning. Fix this by enabling interrupts in the weak arch_cpu_idle() code. [ tglx: Made the changelog match the patch ] Signed-off-by: James Bottomley Reviewed-by: Srivatsa S. Bhat Link: http://lkml.kernel.org/r/1371236142.2726.43.camel@dabdike Signed-off-by: Thomas Gleixner diff --git a/kernel/cpu/idle.c b/kernel/cpu/idle.c index bf2ee1a..e695c0a 100644 --- a/kernel/cpu/idle.c +++ b/kernel/cpu/idle.c @@ -59,6 +59,7 @@ void __weak arch_cpu_idle_dead(void) { } void __weak arch_cpu_idle(void) { cpu_idle_force_poll = 1; + local_irq_enable(); } /* -- cgit v0.10.2 From c139b1ee4e36374af705660af6172d7477352792 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 7 Jun 2013 10:04:54 -0400 Subject: drm/radeon: fix UVD on big endian This fixes the kernel side so that the ring should come up and ring and IB tests should work. The userspace UVD drivers will also need big endian fixes. Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 0e53416..6948eb8 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -2687,6 +2687,9 @@ void r600_uvd_rbc_stop(struct radeon_device *rdev) int r600_uvd_init(struct radeon_device *rdev) { int i, j, r; + /* disable byte swapping */ + u32 lmi_swap_cntl = 0; + u32 mp_swap_cntl = 0; /* raise clocks while booting up the VCPU */ radeon_set_uvd_clocks(rdev, 53300, 40000); @@ -2711,9 +2714,13 @@ int r600_uvd_init(struct radeon_device *rdev) WREG32(UVD_LMI_CTRL, 0x40 | (1 << 8) | (1 << 13) | (1 << 21) | (1 << 9) | (1 << 20)); - /* disable byte swapping */ - WREG32(UVD_LMI_SWAP_CNTL, 0); - WREG32(UVD_MP_SWAP_CNTL, 0); +#ifdef __BIG_ENDIAN + /* swap (8 in 32) RB and IB */ + lmi_swap_cntl = 0xa; + mp_swap_cntl = 0; +#endif + WREG32(UVD_LMI_SWAP_CNTL, lmi_swap_cntl); + WREG32(UVD_MP_SWAP_CNTL, mp_swap_cntl); WREG32(UVD_MPC_SET_MUXA0, 0x40c2040); WREG32(UVD_MPC_SET_MUXA1, 0x0); diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c index 9f55ade..cad735d 100644 --- a/drivers/gpu/drm/radeon/radeon_uvd.c +++ b/drivers/gpu/drm/radeon/radeon_uvd.c @@ -627,19 +627,19 @@ int radeon_uvd_get_create_msg(struct radeon_device *rdev, int ring, } /* stitch together an UVD create msg */ - msg[0] = 0x00000de4; - msg[1] = 0x00000000; - msg[2] = handle; - msg[3] = 0x00000000; - msg[4] = 0x00000000; - msg[5] = 0x00000000; - msg[6] = 0x00000000; - msg[7] = 0x00000780; - msg[8] = 0x00000440; - msg[9] = 0x00000000; - msg[10] = 0x01b37000; + msg[0] = cpu_to_le32(0x00000de4); + msg[1] = cpu_to_le32(0x00000000); + msg[2] = cpu_to_le32(handle); + msg[3] = cpu_to_le32(0x00000000); + msg[4] = cpu_to_le32(0x00000000); + msg[5] = cpu_to_le32(0x00000000); + msg[6] = cpu_to_le32(0x00000000); + msg[7] = cpu_to_le32(0x00000780); + msg[8] = cpu_to_le32(0x00000440); + msg[9] = cpu_to_le32(0x00000000); + msg[10] = cpu_to_le32(0x01b37000); for (i = 11; i < 1024; ++i) - msg[i] = 0x0; + msg[i] = cpu_to_le32(0x0); radeon_bo_kunmap(bo); radeon_bo_unreserve(bo); @@ -673,12 +673,12 @@ int radeon_uvd_get_destroy_msg(struct radeon_device *rdev, int ring, } /* stitch together an UVD destroy msg */ - msg[0] = 0x00000de4; - msg[1] = 0x00000002; - msg[2] = handle; - msg[3] = 0x00000000; + msg[0] = cpu_to_le32(0x00000de4); + msg[1] = cpu_to_le32(0x00000002); + msg[2] = cpu_to_le32(handle); + msg[3] = cpu_to_le32(0x00000000); for (i = 4; i < 1024; ++i) - msg[i] = 0x0; + msg[i] = cpu_to_le32(0x0); radeon_bo_kunmap(bo); radeon_bo_unreserve(bo); -- cgit v0.10.2 From e7b2c4069252732d52f1de6d1f7c82d99a156659 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 14 Jun 2013 21:09:47 +0200 Subject: fput: task_work_add() can fail if the caller has passed exit_task_work() fput() assumes that it can't be called after exit_task_work() but this is not true, for example free_ipc_ns()->shm_destroy() can do this. In this case fput() silently leaks the file. Change it to fallback to delayed_fput_work if task_work_add() fails. The patch looks complicated but it is not, it changes the code from if (PF_KTHREAD) { schedule_work(...); return; } task_work_add(...) to if (!PF_KTHREAD) { if (!task_work_add(...)) return; /* fallback */ } schedule_work(...); As for shm_destroy() in particular, we could make another fix but I think this change makes sense anyway. There could be another similar user, it is not safe to assume that task_work_add() can't fail. Reported-by: Andrey Vagin Signed-off-by: Oleg Nesterov Signed-off-by: Al Viro diff --git a/fs/file_table.c b/fs/file_table.c index cd4d87a..485dc0e 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -306,17 +306,18 @@ void fput(struct file *file) { if (atomic_long_dec_and_test(&file->f_count)) { struct task_struct *task = current; + unsigned long flags; + file_sb_list_del(file); - if (unlikely(in_interrupt() || task->flags & PF_KTHREAD)) { - unsigned long flags; - spin_lock_irqsave(&delayed_fput_lock, flags); - list_add(&file->f_u.fu_list, &delayed_fput_list); - schedule_work(&delayed_fput_work); - spin_unlock_irqrestore(&delayed_fput_lock, flags); - return; + if (likely(!in_interrupt() && !(task->flags & PF_KTHREAD))) { + init_task_work(&file->f_u.fu_rcuhead, ____fput); + if (!task_work_add(task, &file->f_u.fu_rcuhead, true)) + return; } - init_task_work(&file->f_u.fu_rcuhead, ____fput); - task_work_add(task, &file->f_u.fu_rcuhead, true); + spin_lock_irqsave(&delayed_fput_lock, flags); + list_add(&file->f_u.fu_list, &delayed_fput_list); + schedule_work(&delayed_fput_work); + spin_unlock_irqrestore(&delayed_fput_lock, flags); } } -- cgit v0.10.2 From 8aac62706adaaf0fab02c4327761561c8bda9448 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 14 Jun 2013 21:09:49 +0200 Subject: move exit_task_namespaces() outside of exit_notify() exit_notify() does exit_task_namespaces() after forget_original_parent(). This was needed to ensure that ->nsproxy can't be cleared prematurely, an exiting child we are going to reparent can do do_notify_parent() and use the parent's (ours) pid_ns. However, after 32084504 "pidns: use task_active_pid_ns in do_notify_parent" ->nsproxy != NULL is no longer needed, we rely on task_active_pid_ns(). Move exit_task_namespaces() from exit_notify() to do_exit(), after exit_fs() and before exit_task_work(). This solves the problem reported by Andrey, free_ipc_ns()->shm_destroy() does fput() which needs task_work_add(). Note: this particular problem can be fixed if we change fput(), and that change makes sense anyway. But there is another reason to move the callsite. The original reason for exit_task_namespaces() from the middle of exit_notify() was subtle and it has already gone away, now this looks confusing. And this allows us do simplify exit_notify(), we can avoid unlock/lock(tasklist) and we can use ->exit_state instead of PF_EXITING in forget_original_parent(). Reported-by: Andrey Vagin Signed-off-by: Oleg Nesterov Acked-by: "Eric W. Biederman" Acked-by: Andrey Vagin Signed-off-by: Al Viro diff --git a/kernel/exit.c b/kernel/exit.c index af2eb3c..7bb73f9 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -649,7 +649,6 @@ static void exit_notify(struct task_struct *tsk, int group_dead) * jobs, send them a SIGHUP and then a SIGCONT. (POSIX 3.2.2.2) */ forget_original_parent(tsk); - exit_task_namespaces(tsk); write_lock_irq(&tasklist_lock); if (group_dead) @@ -795,6 +794,7 @@ void do_exit(long code) exit_shm(tsk); exit_files(tsk); exit_fs(tsk); + exit_task_namespaces(tsk); exit_task_work(tsk); check_stack_usage(); exit_thread(); -- cgit v0.10.2 From 05252901199d886a68830befb135d1723730ca86 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 6 Jun 2013 19:33:47 -0400 Subject: use can_lookup() instead of direct checks of ->i_op->lookup a couple of places got missed back when Linus has introduced that one... Signed-off-by: Al Viro diff --git a/fs/namei.c b/fs/namei.c index 85e40d1..9ed9361 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1976,7 +1976,7 @@ static int path_lookupat(int dfd, const char *name, err = complete_walk(nd); if (!err && nd->flags & LOOKUP_DIRECTORY) { - if (!nd->inode->i_op->lookup) { + if (!can_lookup(nd->inode)) { path_put(&nd->path); err = -ENOTDIR; } @@ -2850,7 +2850,7 @@ finish_lookup: if ((open_flag & O_CREAT) && S_ISDIR(nd->inode->i_mode)) goto out; error = -ENOTDIR; - if ((nd->flags & LOOKUP_DIRECTORY) && !nd->inode->i_op->lookup) + if ((nd->flags & LOOKUP_DIRECTORY) && !can_lookup(nd->inode)) goto out; audit_inode(name, nd->path.dentry, 0); finish_open: -- cgit v0.10.2 From dd6c5cd8fedddc9605209098e2fa4e82c7af22aa Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 5 Jun 2013 14:07:08 -0400 Subject: snd_pcm_link(): fix a leak... in case when snd_pcm_stream_linked(substream) is true, we end up leaking group. Signed-off-by: Al Viro diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index ccfa383..f928181 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1649,6 +1649,7 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) } if (!snd_pcm_stream_linked(substream)) { substream->group = group; + group = NULL; spin_lock_init(&substream->group->lock); INIT_LIST_HEAD(&substream->group->substreams); list_add_tail(&substream->link_list, &substream->group->substreams); @@ -1663,8 +1664,7 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) _nolock: snd_card_unref(substream1->pcm->card); fput_light(file, fput_needed); - if (res < 0) - kfree(group); + kfree(group); return res; } -- cgit v0.10.2 From 0e37739b1c96d65e6433998454985de994383019 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 13 Jun 2013 21:04:56 +1000 Subject: powerpc: Fix stack overflow crash in resume_kernel when ftracing It's possible for us to crash when running with ftrace enabled, eg: Bad kernel stack pointer bffffd12 at c00000000000a454 cpu 0x3: Vector: 300 (Data Access) at [c00000000ffe3d40] pc: c00000000000a454: resume_kernel+0x34/0x60 lr: c00000000000335c: performance_monitor_common+0x15c/0x180 sp: bffffd12 msr: 8000000000001032 dar: bffffd12 dsisr: 42000000 If we look at current's stack (paca->__current->stack) we see it is equal to c0000002ecab0000. Our stack is 16K, and comparing to paca->kstack (c0000002ecab3e30) we can see that we have overflowed our kernel stack. This leads to us writing over our struct thread_info, and in this case we have corrupted thread_info->flags and set _TIF_EMULATE_STACK_STORE. Dumping the stack we see: 3:mon> t c0000002ecab0000 [c0000002ecab0000] c00000000002131c .performance_monitor_exception+0x5c/0x70 [c0000002ecab0080] c00000000000335c performance_monitor_common+0x15c/0x180 --- Exception: f01 (Performance Monitor) at c0000000000fb2ec .trace_hardirqs_off+0x1c/0x30 [c0000002ecab0370] c00000000016fdb0 .trace_graph_entry+0xb0/0x280 (unreliable) [c0000002ecab0410] c00000000003d038 .prepare_ftrace_return+0x98/0x130 [c0000002ecab04b0] c00000000000a920 .ftrace_graph_caller+0x14/0x28 [c0000002ecab0520] c0000000000d6b58 .idle_cpu+0x18/0x90 [c0000002ecab05a0] c00000000000a934 .return_to_handler+0x0/0x34 [c0000002ecab0620] c00000000001e660 .timer_interrupt+0x160/0x300 [c0000002ecab06d0] c0000000000025dc decrementer_common+0x15c/0x180 --- Exception: 901 (Decrementer) at c0000000000104d4 .arch_local_irq_restore+0x74/0xa0 [c0000002ecab09c0] c0000000000fe044 .trace_hardirqs_on+0x14/0x30 (unreliable) [c0000002ecab0fb0] c00000000016fe3c .trace_graph_entry+0x13c/0x280 [c0000002ecab1050] c00000000003d038 .prepare_ftrace_return+0x98/0x130 [c0000002ecab10f0] c00000000000a920 .ftrace_graph_caller+0x14/0x28 [c0000002ecab1160] c0000000000161f0 .__ppc64_runlatch_on+0x10/0x40 [c0000002ecab11d0] c00000000000a934 .return_to_handler+0x0/0x34 --- Exception: 901 (Decrementer) at c0000000000104d4 .arch_local_irq_restore+0x74/0xa0 ... and so on __ppc64_runlatch_on() is called from RUNLATCH_ON in the exception entry path. At that point the irq state is not consistent, ie. interrupts are hard disabled (by the exception entry), but the paca soft-enabled flag may be out of sync. This leads to the local_irq_restore() in trace_graph_entry() actually enabling interrupts, which we do not want. Because we have not yet reprogrammed the decrementer we immediately take another decrementer exception, and recurse. The fix is twofold. Firstly make sure we call DISABLE_INTS before calling RUNLATCH_ON. The badly named DISABLE_INTS actually reconciles the irq state in the paca with the hardware, making it safe again to call local_irq_save/restore(). Although that should be sufficient to fix the bug, we also mark the runlatch routines as notrace. They are called very early in the exception entry and we are asking for trouble tracing them. They are also fairly uninteresting and tracing them just adds unnecessary overhead. [ This regression was introduced by fe1952fc0afb9a2e4c79f103c08aef5d13db1873 "powerpc: Rework runlatch code" by myself --BenH ] CC: [v3.4+] Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 8e5fae8..46793b5 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -513,7 +513,7 @@ label##_common: \ */ #define STD_EXCEPTION_COMMON_ASYNC(trap, label, hdlr) \ EXCEPTION_COMMON(trap, label, hdlr, ret_from_except_lite, \ - FINISH_NAP;RUNLATCH_ON;DISABLE_INTS) + FINISH_NAP;DISABLE_INTS;RUNLATCH_ON) /* * When the idle code in power4_idle puts the CPU into NAP mode, diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index b0f3e3f..076d124 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1369,7 +1369,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) #ifdef CONFIG_PPC64 /* Called with hard IRQs off */ -void __ppc64_runlatch_on(void) +void notrace __ppc64_runlatch_on(void) { struct thread_info *ti = current_thread_info(); unsigned long ctrl; @@ -1382,7 +1382,7 @@ void __ppc64_runlatch_on(void) } /* Called with hard IRQs off */ -void __ppc64_runlatch_off(void) +void notrace __ppc64_runlatch_off(void) { struct thread_info *ti = current_thread_info(); unsigned long ctrl; -- cgit v0.10.2 From bf593907f7236e95698a76b7c7a2bbf8b1165327 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Fri, 14 Jun 2013 20:07:41 +1000 Subject: powerpc: Fix emulation of illegal instructions on PowerNV platform Normally, the kernel emulates a few instructions that are unimplemented on some processors (e.g. the old dcba instruction), or privileged (e.g. mfpvr). The emulation of unimplemented instructions is currently not working on the PowerNV platform. The reason is that on these machines, unimplemented and illegal instructions cause a hypervisor emulation assist interrupt, rather than a program interrupt as on older CPUs. Our vector for the emulation assist interrupt just calls program_check_exception() directly, without setting the bit in SRR1 that indicates an illegal instruction interrupt. This fixes it by making the emulation assist interrupt set that bit before calling program_check_interrupt(). With this, old programs that use no-longer implemented instructions such as dcba now work again. CC: Signed-off-by: Paul Mackerras Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index e783453..40e4a17 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -683,7 +683,7 @@ machine_check_common: STD_EXCEPTION_COMMON(0xb00, trap_0b, .unknown_exception) STD_EXCEPTION_COMMON(0xd00, single_step, .single_step_exception) STD_EXCEPTION_COMMON(0xe00, trap_0e, .unknown_exception) - STD_EXCEPTION_COMMON(0xe40, emulation_assist, .program_check_exception) + STD_EXCEPTION_COMMON(0xe40, emulation_assist, .emulation_assist_interrupt) STD_EXCEPTION_COMMON(0xe60, hmi_exception, .unknown_exception) #ifdef CONFIG_PPC_DOORBELL STD_EXCEPTION_COMMON_ASYNC(0xe80, h_doorbell, .doorbell_exception) diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index f18c79c..c0e5caf 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -1165,6 +1165,16 @@ bail: exception_exit(prev_state); } +/* + * This occurs when running in hypervisor mode on POWER6 or later + * and an illegal instruction is encountered. + */ +void __kprobes emulation_assist_interrupt(struct pt_regs *regs) +{ + regs->msr |= REASON_ILLEGAL; + program_check_exception(regs); +} + void alignment_exception(struct pt_regs *regs) { enum ctx_state prev_state = exception_enter(); -- cgit v0.10.2 From 230b3034793247f61e6a0b08c44cf415f6d92981 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Sat, 15 Jun 2013 12:13:40 +1000 Subject: powerpc: Fix missing/delayed calls to irq_work When replaying interrupts (as a result of the interrupt occurring while soft-disabled), in the case of the decrementer, we are exclusively testing for a pending timer target. However we also use decrementer interrupts to trigger the new "irq_work", which in this case would be missed. This change the logic to force a replay in both cases of a timer boundary reached and a decrementer interrupt having actually occurred while disabled. The former test is still useful to catch cases where a CPU having been hard-disabled for a long time completely misses the interrupt due to a decrementer rollover. CC: [v3.4+] Signed-off-by: Benjamin Herrenschmidt Tested-by: Steven Rostedt diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 5cbcf4d..ea185e0 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -162,7 +162,7 @@ notrace unsigned int __check_irq_replay(void) * in case we also had a rollover while hard disabled */ local_paca->irq_happened &= ~PACA_IRQ_DEC; - if (decrementer_check_overflow()) + if ((happened & PACA_IRQ_DEC) || decrementer_check_overflow()) return 0x900; /* Finally check if an external interrupt happened */ -- cgit v0.10.2 From f21afc25f9ed45b8ffe200d0f071b0caec3ed2ef Mon Sep 17 00:00:00 2001 From: David Daney Date: Fri, 14 Jun 2013 11:13:59 -0700 Subject: smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu(). Thanks to commit f91eb62f71b3 ("init: scream bloody murder if interrupts are enabled too early"), "bloody murder" is now being screamed. With a MIPS OCTEON config, we use on_each_cpu() in our irq_chip.irq_bus_sync_unlock() function. This gets called in early as a result of the time_init() call. Because the !SMP version of on_each_cpu() unconditionally enables irqs, we get: WARNING: at init/main.c:560 start_kernel+0x250/0x410() Interrupts were enabled early CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0-rc5-Cavium-Octeon+ #801 Call Trace: show_stack+0x68/0x80 warn_slowpath_common+0x78/0xb0 warn_slowpath_fmt+0x38/0x48 start_kernel+0x250/0x410 Suggested fix: Do what we already do in the SMP version of on_each_cpu(), and use local_irq_save/local_irq_restore. Because we need a flags variable, make it a static inline to avoid name space issues. [ Change from v1: Convert on_each_cpu to a static inline function, add #include to avoid build breakage on some files. on_each_cpu_mask() and on_each_cpu_cond() suffer the same problem as on_each_cpu(), but they are not causing !SMP bugs for me, so I will defer changing them to a less urgent patch. ] Signed-off-by: David Daney Cc: Ralf Baechle Cc: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/smp.h b/include/linux/smp.h index e6564c1..c848876 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -11,6 +11,7 @@ #include #include #include +#include extern void cpu_idle(void); @@ -139,13 +140,17 @@ static inline int up_smp_call_function(smp_call_func_t func, void *info) } #define smp_call_function(func, info, wait) \ (up_smp_call_function(func, info)) -#define on_each_cpu(func,info,wait) \ - ({ \ - local_irq_disable(); \ - func(info); \ - local_irq_enable(); \ - 0; \ - }) + +static inline int on_each_cpu(smp_call_func_t func, void *info, int wait) +{ + unsigned long flags; + + local_irq_save(flags); + func(info); + local_irq_restore(flags); + return 0; +} + /* * Note we still need to test the mask even for UP * because we actually can get an empty mask from -- cgit v0.10.2 From 3cb3f839d306443f3d1e79b0bde1a2ad2c12b555 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Sat, 15 Jun 2013 16:47:47 -0400 Subject: tilepro: work around module link error with gcc 4.7 gcc 4.7.x is emitting calls to __ffsdi2 where previously it used to inline the appropriate ctz instructions. While this needs to be fixed in gcc, it's also easy to avoid having it cause build failures when building with those compilers by exporting __ffsdi2 to modules. Signed-off-by: Chris Metcalf Cc: stable@kernel.org diff --git a/arch/tile/lib/exports.c b/arch/tile/lib/exports.c index 4385cb6..a93b02a 100644 --- a/arch/tile/lib/exports.c +++ b/arch/tile/lib/exports.c @@ -84,4 +84,6 @@ uint64_t __ashrdi3(uint64_t, unsigned int); EXPORT_SYMBOL(__ashrdi3); uint64_t __ashldi3(uint64_t, unsigned int); EXPORT_SYMBOL(__ashldi3); +int __ffsdi2(uint64_t); +EXPORT_SYMBOL(__ffsdi2); #endif -- cgit v0.10.2 From 7d132055814ef17a6c7b69f342244c410a5e000f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 15 Jun 2013 11:51:07 -1000 Subject: Linux 3.10-rc6 diff --git a/Makefile b/Makefile index 9040016..c6863b5 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 10 SUBLEVEL = 0 -EXTRAVERSION = -rc5 +EXTRAVERSION = -rc6 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v0.10.2 From 19b2dbde5732170a03bd82cc8bd442cf88d856f7 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 12 Jun 2013 10:15:12 +0100 Subject: drm/i915: Restore fences after resume and GPU resets MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Stéphane Marchesin found that fences for pinned objects (i.e. the scanout) were not being restored upon resume, leading to corruption on the display and reference counting issues. This is due to a bug in commit 312817a39f17dbb4de000165b5b724e3728cd91c [2.6.38] Author: Chris Wilson Date: Mon Nov 22 11:50:11 2010 +0000 drm/i915: Only save and restore fences for UMS that zapped the pinned fences even though they were in use. Fortuitously, whilst we forced a VT switch during suspend and resume, no fences were ever pinned at the time. However, we now can do switchless S3 transitions and so the old bug finally surfaces. Reported-by: Stéphane Marchesin Signed-off-by: Chris Wilson Cc: Daniel Vetter Cc: Stéphane Marchesin Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index b9d00dc..9669a0b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1697,6 +1697,8 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, struct dma_buf *i915_gem_prime_export(struct drm_device *dev, struct drm_gem_object *gem_obj, int flags); +void i915_gem_restore_fences(struct drm_device *dev); + /* i915_gem_context.c */ void i915_gem_context_init(struct drm_device *dev); void i915_gem_context_fini(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 970ad17..a069741 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2117,25 +2117,15 @@ static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv, } } -static void i915_gem_reset_fences(struct drm_device *dev) +void i915_gem_restore_fences(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int i; for (i = 0; i < dev_priv->num_fence_regs; i++) { struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; - - if (reg->obj) - i915_gem_object_fence_lost(reg->obj); - - i915_gem_write_fence(dev, i, NULL); - - reg->pin_count = 0; - reg->obj = NULL; - INIT_LIST_HEAD(®->lru_list); + i915_gem_write_fence(dev, i, reg->obj); } - - INIT_LIST_HEAD(&dev_priv->mm.fence_list); } void i915_gem_reset(struct drm_device *dev) @@ -2158,8 +2148,7 @@ void i915_gem_reset(struct drm_device *dev) obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; } - /* The fence registers are invalidated so clear them out */ - i915_gem_reset_fences(dev); + i915_gem_restore_fences(dev); } /** @@ -3865,8 +3854,6 @@ i915_gem_idle(struct drm_device *dev) if (!drm_core_check_feature(dev, DRIVER_MODESET)) i915_gem_evict_everything(dev); - i915_gem_reset_fences(dev); - /* Hack! Don't let anybody do execbuf while we don't control the chip. * We need to replace this with a semaphore, or something. * And not confound mm.suspended! @@ -4193,7 +4180,8 @@ i915_gem_load(struct drm_device *dev) dev_priv->num_fence_regs = 8; /* Initialize fence registers to zero */ - i915_gem_reset_fences(dev); + INIT_LIST_HEAD(&dev_priv->mm.fence_list); + i915_gem_restore_fences(dev); i915_gem_detect_bit_6_swizzle(dev); init_waitqueue_head(&dev_priv->pending_flip_queue); diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 41f0fde..369b3d8 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -384,6 +384,7 @@ int i915_restore_state(struct drm_device *dev) mutex_lock(&dev->struct_mutex); + i915_gem_restore_fences(dev); i915_restore_display(dev); if (!drm_core_check_feature(dev, DRIVER_MODESET)) { -- cgit v0.10.2 From 8177a9d79c0e942dcac3312f15585d0344d505a5 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 16 Jun 2013 18:06:06 +0100 Subject: lseek(fd, n, SEEK_END) does *not* go to eof - n When you copy some code, you are supposed to read it. If nothing else, there's a chance to spot and fix an obvious bug instead of sharing it... X-Song: "I Got It From Agnes", by Tom Lehrer Signed-off-by: Al Viro [ Tom Lehrer? You're dating yourself, Al ] Signed-off-by: Linus Torvalds diff --git a/drivers/net/ethernet/brocade/bna/bnad_debugfs.c b/drivers/net/ethernet/brocade/bna/bnad_debugfs.c index 6e8bc9d..94d957d 100644 --- a/drivers/net/ethernet/brocade/bna/bnad_debugfs.c +++ b/drivers/net/ethernet/brocade/bna/bnad_debugfs.c @@ -244,7 +244,7 @@ bnad_debugfs_lseek(struct file *file, loff_t offset, int orig) file->f_pos += offset; break; case 2: - file->f_pos = debug->buffer_len - offset; + file->f_pos = debug->buffer_len + offset; break; default: return -EINVAL; diff --git a/drivers/scsi/bfa/bfad_debugfs.c b/drivers/scsi/bfa/bfad_debugfs.c index 439c012..b63d534 100644 --- a/drivers/scsi/bfa/bfad_debugfs.c +++ b/drivers/scsi/bfa/bfad_debugfs.c @@ -186,7 +186,7 @@ bfad_debugfs_lseek(struct file *file, loff_t offset, int orig) file->f_pos += offset; break; case 2: - file->f_pos = debug->buffer_len - offset; + file->f_pos = debug->buffer_len + offset; break; default: return -EINVAL; diff --git a/drivers/scsi/fnic/fnic_debugfs.c b/drivers/scsi/fnic/fnic_debugfs.c index adc1f7f..85e1ffd 100644 --- a/drivers/scsi/fnic/fnic_debugfs.c +++ b/drivers/scsi/fnic/fnic_debugfs.c @@ -174,7 +174,7 @@ static loff_t fnic_trace_debugfs_lseek(struct file *file, pos = file->f_pos + offset; break; case 2: - pos = fnic_dbg_prt->buffer_len - offset; + pos = fnic_dbg_prt->buffer_len + offset; } return (pos < 0 || pos > fnic_dbg_prt->buffer_len) ? -EINVAL : (file->f_pos = pos); diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c index f63f5ff..f525ecb 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -1178,7 +1178,7 @@ lpfc_debugfs_lseek(struct file *file, loff_t off, int whence) pos = file->f_pos + off; break; case 2: - pos = debug->len - off; + pos = debug->len + off; } return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos); } -- cgit v0.10.2 From ff49fad1d9bf2c49f52817b04cde8e4412434637 Mon Sep 17 00:00:00 2001 From: Jay Agarwal Date: Wed, 12 Jun 2013 12:43:43 +0530 Subject: ARM: tegra30: clocks: Fix pciex clock registration Registering pciex as peripheral clock instead of fixed clock as tegra_perih_reset_assert(deassert) api of this clock api gives warning and ultimately does not succeed to assert(deassert) Signed-off-by: Jay Agarwal Acked-by: Stephen Warren Signed-off-by: Mike Turquette diff --git a/drivers/clk/tegra/clk-tegra30.c b/drivers/clk/tegra/clk-tegra30.c index c6921f5..ba99e38 100644 --- a/drivers/clk/tegra/clk-tegra30.c +++ b/drivers/clk/tegra/clk-tegra30.c @@ -1598,6 +1598,12 @@ static void __init tegra30_periph_clk_init(void) clk_register_clkdev(clk, "afi", "tegra-pcie"); clks[afi] = clk; + /* pciex */ + clk = tegra_clk_register_periph_gate("pciex", "pll_e", 0, clk_base, 0, + 74, &periph_u_regs, periph_clk_enb_refcnt); + clk_register_clkdev(clk, "pciex", "tegra-pcie"); + clks[pciex] = clk; + /* kfuse */ clk = tegra_clk_register_periph_gate("kfuse", "clk_m", TEGRA_PERIPH_ON_APB, @@ -1716,11 +1722,6 @@ static void __init tegra30_fixed_clk_init(void) 1, 0, &cml_lock); clk_register_clkdev(clk, "cml1", NULL); clks[cml1] = clk; - - /* pciex */ - clk = clk_register_fixed_rate(NULL, "pciex", "pll_e", 0, 100000000); - clk_register_clkdev(clk, "pciex", NULL); - clks[pciex] = clk; } static void __init tegra30_osc_clk_init(void) -- cgit v0.10.2 From d81bf8cf549f7a6656a64924672a42c101d17026 Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Tue, 11 Jun 2013 11:06:48 +0200 Subject: ALSA: hda - Headset mic support for three more machines They need these quirks to have headset mic support. BugLink: https://bugs.launchpad.net/bugs/1189363 Tested-by: Shawn Wang Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 02e22b4..af9e71b 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3483,6 +3483,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x1028, 0x05ca, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05cb, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05de, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), + SND_PCI_QUIRK(0x1028, 0x05e0, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05e9, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05ea, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05eb, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), @@ -3494,6 +3495,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x1028, 0x05f5, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05f6, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05f8, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), + SND_PCI_QUIRK(0x1028, 0x0606, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), + SND_PCI_QUIRK(0x1028, 0x0608, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x0609, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2), SND_PCI_QUIRK(0x103c, 0x18e6, "HP", ALC269_FIXUP_HP_GPIO_LED), -- cgit v0.10.2 From 342cda29343a6272c630f94ed56810a76740251b Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Sat, 15 Jun 2013 11:21:09 +0200 Subject: ALSA: usb-audio: work around Android accessory firmware bug When the Android firmware enables the audio interfaces in accessory mode, it always declares in the control interface's baInterfaceNr array that interfaces 0 and 1 belong to the audio function. However, the accessory interface itself, if also enabled, already is at index 0 and shifts the actual audio interface numbers to 1 and 2, which prevents the PCM streaming interface from being seen by the host driver. To get the PCM interface interface to work, detect when the descriptors point to the (for this driver useless) accessory interface, and redirect to the correct one. Reported-by: Jeremy Rosen Tested-by: Jeremy Rosen Cc: Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai diff --git a/sound/usb/card.c b/sound/usb/card.c index 1a03317..64952e2 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -147,14 +147,32 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int return -EINVAL; } + alts = &iface->altsetting[0]; + altsd = get_iface_desc(alts); + + /* + * Android with both accessory and audio interfaces enabled gets the + * interface numbers wrong. + */ + if ((chip->usb_id == USB_ID(0x18d1, 0x2d04) || + chip->usb_id == USB_ID(0x18d1, 0x2d05)) && + interface == 0 && + altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && + altsd->bInterfaceSubClass == USB_SUBCLASS_VENDOR_SPEC) { + interface = 2; + iface = usb_ifnum_to_if(dev, interface); + if (!iface) + return -EINVAL; + alts = &iface->altsetting[0]; + altsd = get_iface_desc(alts); + } + if (usb_interface_claimed(iface)) { snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", dev->devnum, ctrlif, interface); return -EINVAL; } - alts = &iface->altsetting[0]; - altsd = get_iface_desc(alts); if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) { -- cgit v0.10.2 From 6ab982e8cf8e5760da407ccdc4abc815bea23179 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 17 Jun 2013 10:19:49 +0200 Subject: ALSA: hda - Fix pin configurations for MacBook Air 4,2 MacBook Air 4,2 requires the whole default pin configuration table to be overridden by the driver, as usual, as Apple's machines don't set up properly after boot. Otherwise mic won't work, and other ill effect may happen. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=59381 Reported-and-tested-by: Peter John Hartman Cc: [v3.9+] Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c index bd8d46c..cccaf9c 100644 --- a/sound/pci/hda/patch_cirrus.c +++ b/sound/pci/hda/patch_cirrus.c @@ -58,6 +58,7 @@ enum { CS420X_GPIO_23, CS420X_MBP101, CS420X_MBP81, + CS420X_MBA42, CS420X_AUTO, /* aliases */ CS420X_IMAC27_122 = CS420X_GPIO_23, @@ -346,6 +347,7 @@ static const struct hda_model_fixup cs420x_models[] = { { .id = CS420X_APPLE, .name = "apple" }, { .id = CS420X_MBP101, .name = "mbp101" }, { .id = CS420X_MBP81, .name = "mbp81" }, + { .id = CS420X_MBA42, .name = "mba42" }, {} }; @@ -361,6 +363,7 @@ static const struct snd_pci_quirk cs420x_fixup_tbl[] = { SND_PCI_QUIRK(0x106b, 0x1c00, "MacBookPro 8,1", CS420X_MBP81), SND_PCI_QUIRK(0x106b, 0x2000, "iMac 12,2", CS420X_IMAC27_122), SND_PCI_QUIRK(0x106b, 0x2800, "MacBookPro 10,1", CS420X_MBP101), + SND_PCI_QUIRK(0x106b, 0x5b00, "MacBookAir 4,2", CS420X_MBA42), SND_PCI_QUIRK_VENDOR(0x106b, "Apple", CS420X_APPLE), {} /* terminator */ }; @@ -414,6 +417,20 @@ static const struct hda_pintbl mbp101_pincfgs[] = { {} /* terminator */ }; +static const struct hda_pintbl mba42_pincfgs[] = { + { 0x09, 0x012b4030 }, /* HP */ + { 0x0a, 0x400000f0 }, + { 0x0b, 0x90100120 }, /* speaker */ + { 0x0c, 0x400000f0 }, + { 0x0d, 0x90a00110 }, /* mic */ + { 0x0e, 0x400000f0 }, + { 0x0f, 0x400000f0 }, + { 0x10, 0x400000f0 }, + { 0x12, 0x400000f0 }, + { 0x15, 0x400000f0 }, + {} /* terminator */ +}; + static void cs420x_fixup_gpio_13(struct hda_codec *codec, const struct hda_fixup *fix, int action) { @@ -482,6 +499,12 @@ static const struct hda_fixup cs420x_fixups[] = { .chained = true, .chain_id = CS420X_GPIO_13, }, + [CS420X_MBA42] = { + .type = HDA_FIXUP_PINS, + .v.pins = mba42_pincfgs, + .chained = true, + .chain_id = CS420X_GPIO_13, + }, }; static struct cs_spec *cs_alloc_spec(struct hda_codec *codec, int vendor_nid) -- cgit v0.10.2 From 36691e1be6ec551eef4a5225f126a281f8c051c2 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 17 Jun 2013 10:25:02 +0200 Subject: ALSA: usb-audio: Fix invalid volume resolution for Logitech HD Webcam c310 Just like the previous fix for LogitechHD Webcam c270 in commit 11e7064f35bb87da8f427d1aa4bbd8b7473a3993, c310 model also requires the same workaround for avoiding the kernel warning. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=59741 Cc: Signed-off-by: Takashi Iwai diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index e5c7f9f..d543808 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -885,6 +885,7 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval, case USB_ID(0x046d, 0x0808): case USB_ID(0x046d, 0x0809): + case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */ case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ case USB_ID(0x046d, 0x0991): -- cgit v0.10.2 From e32aa85ab49203104019025eba83f03f88a3a0e3 Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Mon, 17 Jun 2013 11:04:02 +0200 Subject: ALSA: hda - Add models for Dell headset jacks These headset jacks keep coming in on more and more platforms, and it's possible I don't catch them all. Make it easier to test and verify by making models. Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt index bb8b0dc..77d68e2 100644 --- a/Documentation/sound/alsa/HD-Audio-Models.txt +++ b/Documentation/sound/alsa/HD-Audio-Models.txt @@ -29,6 +29,8 @@ ALC269/270/275/276/280/282 alc271-dmic Enable ALC271X digital mic workaround inv-dmic Inverted internal mic workaround lenovo-dock Enables docking station I/O for some Lenovos + dell-headset-multi Headset jack, which can also be used as mic-in + dell-headset-dock Headset jack (without mic-in), and also dock I/O ALC662/663/272 ============== @@ -42,6 +44,7 @@ ALC662/663/272 asus-mode7 ASUS asus-mode8 ASUS inv-dmic Inverted internal mic workaround + dell-headset-multi Headset jack, which can also be used as mic-in ALC680 ====== diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index af9e71b..403010c 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3599,6 +3599,8 @@ static const struct hda_model_fixup alc269_fixup_models[] = { {.id = ALC269_FIXUP_INV_DMIC, .name = "inv-dmic"}, {.id = ALC269_FIXUP_LENOVO_DOCK, .name = "lenovo-dock"}, {.id = ALC269_FIXUP_HP_GPIO_LED, .name = "hp-gpio-led"}, + {.id = ALC269_FIXUP_DELL1_MIC_NO_PRESENCE, .name = "dell-headset-multi"}, + {.id = ALC269_FIXUP_DELL2_MIC_NO_PRESENCE, .name = "dell-headset-dock"}, {} }; @@ -4278,6 +4280,7 @@ static const struct hda_model_fixup alc662_fixup_models[] = { {.id = ALC662_FIXUP_ASUS_MODE7, .name = "asus-mode7"}, {.id = ALC662_FIXUP_ASUS_MODE8, .name = "asus-mode8"}, {.id = ALC662_FIXUP_INV_DMIC, .name = "inv-dmic"}, + {.id = ALC668_FIXUP_DELL_MIC_NO_PRESENCE, .name = "dell-headset-multi"}, {} }; -- cgit v0.10.2 From 691557941af4c12bd307ad81a4d9fa9c7743ac28 Mon Sep 17 00:00:00 2001 From: Jon Medhurst Date: Fri, 7 Jun 2013 10:35:35 +0100 Subject: ARM: 7752/1: errata: LoUIS bit field in CLIDR register is incorrect On Cortex-A9 before version r1p0, the LoUIS bit field of the CLIDR register returns zero when it should return one. This leads to cache maintenance operations which rely on this value to not function as intended, causing data corruption. The workaround for this errata is to detect affected CPUs and correct the LoUIS value read. Acked-by: Will Deacon Acked-by: Nicolas Pitre Cc: stable@vger.kernel.org Signed-off-by: Jon Medhurst Signed-off-by: Russell King diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 49d993c..239fa96 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1189,6 +1189,16 @@ config PL310_ERRATA_588369 is not correctly implemented in PL310 as clean lines are not invalidated as a result of these operations. +config ARM_ERRATA_643719 + bool "ARM errata: LoUIS bit field in CLIDR register is incorrect" + depends on CPU_V7 && SMP + help + This option enables the workaround for the 643719 Cortex-A9 (prior to + r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR + register returns zero when it should return one. The workaround + corrects this value, ensuring cache maintenance operations which use + it behave as intended and avoiding data corruption. + config ARM_ERRATA_720789 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" depends on CPU_V7 diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 15451ee..515b000 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -92,6 +92,14 @@ ENTRY(v7_flush_dcache_louis) mrc p15, 1, r0, c0, c0, 1 @ read clidr, r0 = clidr ALT_SMP(ands r3, r0, #(7 << 21)) @ extract LoUIS from clidr ALT_UP(ands r3, r0, #(7 << 27)) @ extract LoUU from clidr +#ifdef CONFIG_ARM_ERRATA_643719 + ALT_SMP(mrceq p15, 0, r2, c0, c0, 0) @ read main ID register + ALT_UP(moveq pc, lr) @ LoUU is zero, so nothing to do + ldreq r1, =0x410fc090 @ ID of ARM Cortex A9 r0p? + biceq r2, r2, #0x0000000f @ clear minor revision number + teqeq r2, r1 @ test for errata affected core and if so... + orreqs r3, #(1 << 21) @ fix LoUIS value (and set flags state to 'ne') +#endif ALT_SMP(mov r3, r3, lsr #20) @ r3 = LoUIS * 2 ALT_UP(mov r3, r3, lsr #26) @ r3 = LoUU * 2 moveq pc, lr @ return if level == 0 -- cgit v0.10.2 From 37468b30a3948bbbdf9d664678f611510d987e65 Mon Sep 17 00:00:00 2001 From: Po-Yu Chuang Date: Fri, 7 Jun 2013 12:15:45 +0100 Subject: ARM: 7753/1: map_init_section flushes incorrect pmd This bug was introduced in commit e651eab0. Some v4/v5 platforms failed to boot due to this. Signed-off-by: Po-Yu Chuang Signed-off-by: Russell King diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index e0d8565..4d409e6 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -616,10 +616,12 @@ static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr, } while (pte++, addr += PAGE_SIZE, addr != end); } -static void __init map_init_section(pmd_t *pmd, unsigned long addr, +static void __init __map_init_section(pmd_t *pmd, unsigned long addr, unsigned long end, phys_addr_t phys, const struct mem_type *type) { + pmd_t *p = pmd; + #ifndef CONFIG_ARM_LPAE /* * In classic MMU format, puds and pmds are folded in to @@ -638,7 +640,7 @@ static void __init map_init_section(pmd_t *pmd, unsigned long addr, phys += SECTION_SIZE; } while (pmd++, addr += SECTION_SIZE, addr != end); - flush_pmd_entry(pmd); + flush_pmd_entry(p); } static void __init alloc_init_pmd(pud_t *pud, unsigned long addr, @@ -661,7 +663,7 @@ static void __init alloc_init_pmd(pud_t *pud, unsigned long addr, */ if (type->prot_sect && ((addr | next | phys) & ~SECTION_MASK) == 0) { - map_init_section(pmd, addr, next, phys, type); + __map_init_section(pmd, addr, next, phys, type); } else { alloc_init_pte(pmd, addr, next, __phys_to_pfn(phys), type); -- cgit v0.10.2 From 049be07053ebbf0ee8543caea23ae7bdf0765bb2 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Mon, 10 Jun 2013 18:05:51 +0100 Subject: ARM: 7754/1: Fix the CPU ID and the mask associated to the PJ4B This commit fixes the ID and mask for the PJ4B which was too restrictive and didn't match the CPU of the Armada 370 SoC. Signed-off-by: Gregory CLEMENT Reviewed-by: Will Deacon Cc: Signed-off-by: Russell King diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 2c73a73..4c8c9c1 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -409,8 +409,8 @@ __v7_ca9mp_proc_info: */ .type __v7_pj4b_proc_info, #object __v7_pj4b_proc_info: - .long 0x562f5840 - .long 0xfffffff0 + .long 0x560f5800 + .long 0xff0fff00 __v7_proc __v7_pj4b_setup .size __v7_pj4b_proc_info, . - __v7_pj4b_proc_info -- cgit v0.10.2 From 1bc39742aab09248169ef9d3727c9def3528b3f3 Mon Sep 17 00:00:00 2001 From: Simon Baatz Date: Mon, 10 Jun 2013 21:10:12 +0100 Subject: ARM: 7755/1: handle user space mapped pages in flush_kernel_dcache_page Commit f8b63c1 made flush_kernel_dcache_page a no-op assuming that the pages it needs to handle are kernel mapped only. However, for example when doing direct I/O, pages with user space mappings may occur. Thus, continue to do lazy flushing if there are no user space mappings. Otherwise, flush the kernel cache lines directly. Signed-off-by: Simon Baatz Reviewed-by: Catalin Marinas Cc: # 3.2+ Signed-off-by: Russell King diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index bff7138..17d0ae8 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -320,9 +320,7 @@ static inline void flush_anon_page(struct vm_area_struct *vma, } #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE -static inline void flush_kernel_dcache_page(struct page *page) -{ -} +extern void flush_kernel_dcache_page(struct page *); #define flush_dcache_mmap_lock(mapping) \ spin_lock_irq(&(mapping)->tree_lock) diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 0d473cc..32aa586 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -301,6 +301,39 @@ void flush_dcache_page(struct page *page) EXPORT_SYMBOL(flush_dcache_page); /* + * Ensure cache coherency for the kernel mapping of this page. We can + * assume that the page is pinned via kmap. + * + * If the page only exists in the page cache and there are no user + * space mappings, this is a no-op since the page was already marked + * dirty at creation. Otherwise, we need to flush the dirty kernel + * cache lines directly. + */ +void flush_kernel_dcache_page(struct page *page) +{ + if (cache_is_vivt() || cache_is_vipt_aliasing()) { + struct address_space *mapping; + + mapping = page_mapping(page); + + if (!mapping || mapping_mapped(mapping)) { + void *addr; + + addr = page_address(page); + /* + * kmap_atomic() doesn't set the page virtual + * address for highmem pages, and + * kunmap_atomic() takes care of cache + * flushing already. + */ + if (!IS_ENABLED(CONFIG_HIGHMEM) || addr) + __cpuc_flush_dcache_area(addr, PAGE_SIZE); + } + } +} +EXPORT_SYMBOL(flush_kernel_dcache_page); + +/* * Flush an anonymous page so that users of get_user_pages() * can safely access the data. The expected sequence is: * -- cgit v0.10.2 From 69f91ff8c93c778cb65b71d9b2d95ff62956354f Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 12 Jun 2013 10:56:43 +0100 Subject: ARM: 7756/1: zImage/virt: remove hyp-stub.S during distclean Make sure hyp-stub.S gets removed during make distclean, this left over file was introduced in commit: 424e599 ARM: zImage/virt: hyp mode entry support for the zImage loader Signed-off-by: Magnus Damm Acked-by: Dave Martin Reviewed-by: Simon Horman Signed-off-by: Russell King diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 79e9bdb..120b83b 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -116,7 +116,8 @@ targets := vmlinux vmlinux.lds \ # Make sure files are removed during clean extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern \ - lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs) + lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs) \ + hyp-stub.S ifeq ($(CONFIG_FUNCTION_TRACER),y) ORIG_CFLAGS := $(KBUILD_CFLAGS) -- cgit v0.10.2 From 0abb6aeacc20822cd7baee82fd3b61169ca3f32e Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Wed, 12 Jun 2013 13:53:44 +0530 Subject: ARM: dts: Correct the base address of pinctrl_3 on Exynos5250 This patch corrects the base address of pinctrl_3 on Exynos5250 platform. Signed-off-by: Padmavathi Venna Acked-by: Kukjin Kim Signed-off-by: Olof Johansson diff --git a/arch/arm/boot/dts/exynos5250-pinctrl.dtsi b/arch/arm/boot/dts/exynos5250-pinctrl.dtsi index d1650fb..ded558b 100644 --- a/arch/arm/boot/dts/exynos5250-pinctrl.dtsi +++ b/arch/arm/boot/dts/exynos5250-pinctrl.dtsi @@ -763,7 +763,7 @@ }; }; - pinctrl@03680000 { + pinctrl@03860000 { gpz: gpz { gpio-controller; #gpio-cells = <2>; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index 0673524..fc9fb3d 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -161,9 +161,9 @@ interrupts = <0 50 0>; }; - pinctrl_3: pinctrl@03680000 { + pinctrl_3: pinctrl@03860000 { compatible = "samsung,exynos5250-pinctrl"; - reg = <0x0368000 0x1000>; + reg = <0x03860000 0x1000>; interrupts = <0 47 0>; }; -- cgit v0.10.2 From a908eb9936ba06678720226feed891d01827066f Mon Sep 17 00:00:00 2001 From: Gianluca Gennari Date: Sun, 2 Jun 2013 17:24:24 -0300 Subject: [media] rtl28xxu: fix buffer overflow when probing Rafael Micro r820t tuner As suggested by Antti, this patch replaces: https://patchwork.kernel.org/patch/2649861/ The buffer overflow is fixed by reading only the r820t ID register. Signed-off-by: Gianluca Gennari Acked-by: Antti Palosaari Reviewed-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c index 22015fe..2cc8ec7 100644 --- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c +++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c @@ -376,7 +376,7 @@ static int rtl2832u_read_config(struct dvb_usb_device *d) struct rtl28xxu_req req_mxl5007t = {0xd9c0, CMD_I2C_RD, 1, buf}; struct rtl28xxu_req req_e4000 = {0x02c8, CMD_I2C_RD, 1, buf}; struct rtl28xxu_req req_tda18272 = {0x00c0, CMD_I2C_RD, 2, buf}; - struct rtl28xxu_req req_r820t = {0x0034, CMD_I2C_RD, 5, buf}; + struct rtl28xxu_req req_r820t = {0x0034, CMD_I2C_RD, 1, buf}; dev_dbg(&d->udev->dev, "%s:\n", __func__); @@ -481,9 +481,9 @@ static int rtl2832u_read_config(struct dvb_usb_device *d) goto found; } - /* check R820T by reading tuner stats at I2C addr 0x1a */ + /* check R820T ID register; reg=00 val=69 */ ret = rtl28xxu_ctrl_msg(d, &req_r820t); - if (ret == 0) { + if (ret == 0 && buf[0] == 0x69) { priv->tuner = TUNER_RTL2832_R820T; priv->tuner_name = "R820T"; goto found; -- cgit v0.10.2 From ef223fb3d1d61c2a95a89cdc02f8e86dac96ddc3 Mon Sep 17 00:00:00 2001 From: Ross Lagerwall Date: Fri, 14 Jun 2013 23:24:25 +0100 Subject: tty/vt: Return EBUSY if deallocating VT1 and it is busy Commit 421b40a6286e ("tty/vt: Fix vc_deallocate() lock order") changed the behavior when deallocating VT 1. Previously if trying to deallocate VT1 and it is busy, we would return EBUSY. The commit changed this to return 0 (success). This commit restores the old behavior. Signed-off-by: Ross Lagerwall Tested-by: Mikael Pettersson Acked-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c index fc2c06c..2bd78e2 100644 --- a/drivers/tty/vt/vt_ioctl.c +++ b/drivers/tty/vt/vt_ioctl.c @@ -289,13 +289,10 @@ static int vt_disallocate(unsigned int vc_num) struct vc_data *vc = NULL; int ret = 0; - if (!vc_num) - return 0; - console_lock(); if (VT_BUSY(vc_num)) ret = -EBUSY; - else + else if (vc_num) vc = vc_deallocate(vc_num); console_unlock(); -- cgit v0.10.2 From 7c61c3d8f44d5d822f758754287af644307b4af9 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Thu, 13 Jun 2013 15:56:37 -0400 Subject: tty: Fix transient pty write() EIO Commit 699390354da6c258b65bf8fa79cfd5feaede50b6 ('pty: Ignore slave pty close() if never successfully opened') introduced a bug with ptys whereby a write() in parallel with an open() on an existing pty could mistakenly indicate an I/O error. Only indicate an I/O error if the condition on open() actually exists. Reported-by: Markus Trippelsdorf Signed-off-by: Peter Hurley Tested-by: Mikael Pettersson Cc: stable # 3.9 Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 59bfaec..abfd990 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -244,14 +244,9 @@ static void pty_flush_buffer(struct tty_struct *tty) static int pty_open(struct tty_struct *tty, struct file *filp) { - int retval = -ENODEV; - if (!tty || !tty->link) - goto out; - - set_bit(TTY_IO_ERROR, &tty->flags); + return -ENODEV; - retval = -EIO; if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) goto out; if (test_bit(TTY_PTY_LOCK, &tty->link->flags)) @@ -262,9 +257,11 @@ static int pty_open(struct tty_struct *tty, struct file *filp) clear_bit(TTY_IO_ERROR, &tty->flags); clear_bit(TTY_OTHER_CLOSED, &tty->link->flags); set_bit(TTY_THROTTLED, &tty->flags); - retval = 0; + return 0; + out: - return retval; + set_bit(TTY_IO_ERROR, &tty->flags); + return -EIO; } static void pty_set_termios(struct tty_struct *tty, -- cgit v0.10.2 From 19ab428f4b7988ef3ac727c680efc193ef53ce14 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 14 Jun 2013 16:14:14 +0100 Subject: ARM: 7759/1: decouple CPU offlining from reboot/shutdown Add comments to machine_shutdown()/halt()/power_off()/restart() that describe their purpose and/or requirements re: CPUs being active/not. In machine_shutdown(), replace the call to smp_send_stop() with a call to disable_nonboot_cpus(). This completely disables all but one CPU, thus satisfying the requirement that only a single CPU be active for kexec. Adjust Kconfig dependencies for this change. In machine_halt()/power_off()/restart(), call smp_send_stop() directly, rather than via machine_shutdown(); these functions don't need to completely de-activate all CPUs using hotplug, but rather just quiesce them. Remove smp_kill_cpus(), and its call from smp_send_stop(). smp_kill_cpus() was indirectly calling smp_ops.cpu_kill() without calling smp_ops.cpu_die() on the target CPUs first. At least some implementations of smp_ops had issues with this; it caused cpu_kill() to hang on Tegra, for example. Since smp_send_stop() is only used for shutdown, halt, and power-off, there is no need to attempt any kind of CPU hotplug here. Adjust Kconfig to reflect that machine_shutdown() (and hence kexec) relies upon disable_nonboot_cpus(). However, this alone doesn't guarantee that hotplug will work, or even that hotplug is implemented for a particular piece of HW that a multi-platform zImage runs on. Hence, add error-checking to machine_kexec() to determine whether it did work. Suggested-by: Russell King Signed-off-by: Stephen Warren Acked-by: Will Deacon Tested-by: Zhangfei Gao Signed-off-by: Russell King diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 239fa96..2651b1d 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -2016,7 +2016,7 @@ config XIP_PHYS_ADDR config KEXEC bool "Kexec system call (EXPERIMENTAL)" - depends on (!SMP || HOTPLUG_CPU) + depends on (!SMP || PM_SLEEP_SMP) help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index 8ef8c93..4fb074c 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -134,6 +134,10 @@ void machine_kexec(struct kimage *image) unsigned long reboot_code_buffer_phys; void *reboot_code_buffer; + if (num_online_cpus() > 1) { + pr_err("kexec: error: multiple CPUs still online\n"); + return; + } page_list = image->head & PAGE_MASK; diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 282de48..6e8931c 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -184,30 +184,61 @@ int __init reboot_setup(char *str) __setup("reboot=", reboot_setup); +/* + * Called by kexec, immediately prior to machine_kexec(). + * + * This must completely disable all secondary CPUs; simply causing those CPUs + * to execute e.g. a RAM-based pin loop is not sufficient. This allows the + * kexec'd kernel to use any and all RAM as it sees fit, without having to + * avoid any code or data used by any SW CPU pin loop. The CPU hotplug + * functionality embodied in disable_nonboot_cpus() to achieve this. + */ void machine_shutdown(void) { -#ifdef CONFIG_SMP - smp_send_stop(); -#endif + disable_nonboot_cpus(); } +/* + * Halting simply requires that the secondary CPUs stop performing any + * activity (executing tasks, handling interrupts). smp_send_stop() + * achieves this. + */ void machine_halt(void) { - machine_shutdown(); + smp_send_stop(); + local_irq_disable(); while (1); } +/* + * Power-off simply requires that the secondary CPUs stop performing any + * activity (executing tasks, handling interrupts). smp_send_stop() + * achieves this. When the system power is turned off, it will take all CPUs + * with it. + */ void machine_power_off(void) { - machine_shutdown(); + smp_send_stop(); + if (pm_power_off) pm_power_off(); } +/* + * Restart requires that the secondary CPUs stop performing any activity + * while the primary CPU resets the system. Systems with a single CPU can + * use soft_restart() as their machine descriptor's .restart hook, since that + * will cause the only available CPU to reset. Systems with multiple CPUs must + * provide a HW restart implementation, to ensure that all CPUs reset at once. + * This is required so that any code running after reset on the primary CPU + * doesn't have to co-ordinate with other CPUs to ensure they aren't still + * executing pre-reset code, and using RAM that the primary CPU's code wishes + * to use. Implementing such co-ordination would be essentially impossible. + */ void machine_restart(char *cmd) { - machine_shutdown(); + smp_send_stop(); arm_pm_restart(reboot_mode, cmd); diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 550d63c..5919eb4 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -651,17 +651,6 @@ void smp_send_reschedule(int cpu) smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE); } -#ifdef CONFIG_HOTPLUG_CPU -static void smp_kill_cpus(cpumask_t *mask) -{ - unsigned int cpu; - for_each_cpu(cpu, mask) - platform_cpu_kill(cpu); -} -#else -static void smp_kill_cpus(cpumask_t *mask) { } -#endif - void smp_send_stop(void) { unsigned long timeout; @@ -679,8 +668,6 @@ void smp_send_stop(void) if (num_online_cpus() > 1) pr_warning("SMP: failed to stop secondary CPUs\n"); - - smp_kill_cpus(&mask); } /* -- cgit v0.10.2 From f75773103d24faaa75323597c2804edfb4a48a52 Mon Sep 17 00:00:00 2001 From: David Daney Date: Sun, 16 Jun 2013 13:06:28 -0700 Subject: [IA64] Fix include dependency in asm/irqflags.h asm/kregs.h isn't always included first, so we need an explicit include. [Fix build breakage introduced by f21afc25f9ed45b8ffe200d0f071b0caec3ed2ef smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu().] Signed-off-by: David Daney Acked-by: Geert Uytterhoeven Signed-off-by: Tony Luck diff --git a/arch/ia64/include/asm/irqflags.h b/arch/ia64/include/asm/irqflags.h index 1bf2cf2..cec6c06 100644 --- a/arch/ia64/include/asm/irqflags.h +++ b/arch/ia64/include/asm/irqflags.h @@ -11,6 +11,7 @@ #define _ASM_IA64_IRQFLAGS_H #include +#include #ifdef CONFIG_IA64_DEBUG_IRQ extern unsigned long last_cli_ip; -- cgit v0.10.2 From 3bf74b1aecdce719f1445200d5db7dfee2297bba Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 17 Jun 2013 12:09:57 -0700 Subject: vxlan: fix race between flush and incoming learning It is possible for a packet to arrive during vxlan_stop(), and have a dynamic entry created. Close this by checking if device is up. CPU1 CPU2 vxlan_stop vxlan_flush hash_lock acquired vxlan_encap_recv vxlan_snoop waiting for hash_lock hash_lock relased vxlan_flush done hash_lock acquired vxlan_fdb_create This is a day-one bug in vxlan goes back to 3.7. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 3b1d2ee..577a069 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -571,7 +571,6 @@ static void vxlan_snoop(struct net_device *dev, { struct vxlan_dev *vxlan = netdev_priv(dev); struct vxlan_fdb *f; - int err; f = vxlan_find_mac(vxlan, src_mac); if (likely(f)) { @@ -588,12 +587,15 @@ static void vxlan_snoop(struct net_device *dev, } else { /* learned new entry */ spin_lock(&vxlan->hash_lock); - err = vxlan_fdb_create(vxlan, src_mac, src_ip, - NUD_REACHABLE, - NLM_F_EXCL|NLM_F_CREATE, - vxlan->dst_port, - vxlan->default_dst.remote_vni, - 0, NTF_SELF); + + /* close off race between vxlan_flush and incoming packets */ + if (netif_running(dev)) + vxlan_fdb_create(vxlan, src_mac, src_ip, + NUD_REACHABLE, + NLM_F_EXCL|NLM_F_CREATE, + vxlan->dst_port, + vxlan->default_dst.remote_vni, + 0, NTF_SELF); spin_unlock(&vxlan->hash_lock); } } -- cgit v0.10.2 From 26a41ae604381c5cc0caf1c3261ca6b298b5fe69 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 17 Jun 2013 12:09:58 -0700 Subject: vxlan: only migrate dynamic FDB entries Only migrate dynamic forwarding table entries, don't modify static entries. If packet received from incorrect source IP address assume it is an imposter and drop it. This patch applies only to -net, a different patch would be needed for earlier kernels since the NTF_SELF flag was introduced with 3.10. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 577a069..15a73ec 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -565,8 +565,9 @@ skip: /* Watch incoming packets to learn mapping between Ethernet address * and Tunnel endpoint. + * Return true if packet is bogus and should be droppped. */ -static void vxlan_snoop(struct net_device *dev, +static bool vxlan_snoop(struct net_device *dev, __be32 src_ip, const u8 *src_mac) { struct vxlan_dev *vxlan = netdev_priv(dev); @@ -575,7 +576,11 @@ static void vxlan_snoop(struct net_device *dev, f = vxlan_find_mac(vxlan, src_mac); if (likely(f)) { if (likely(f->remote.remote_ip == src_ip)) - return; + return false; + + /* Don't migrate static entries, drop packets */ + if (!(f->flags & NTF_SELF)) + return true; if (net_ratelimit()) netdev_info(dev, @@ -598,6 +603,8 @@ static void vxlan_snoop(struct net_device *dev, 0, NTF_SELF); spin_unlock(&vxlan->hash_lock); } + + return false; } @@ -729,8 +736,9 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb) vxlan->dev->dev_addr) == 0) goto drop; - if (vxlan->flags & VXLAN_F_LEARN) - vxlan_snoop(skb->dev, oip->saddr, eth_hdr(skb)->h_source); + if ((vxlan->flags & VXLAN_F_LEARN) && + vxlan_snoop(skb->dev, oip->saddr, eth_hdr(skb)->h_source)) + goto drop; __skb_tunnel_rx(skb, vxlan->dev); skb_reset_network_header(skb); -- cgit v0.10.2 From 7aa27238417a34ec9be2d8eff05ceff319f2d39b Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 17 Jun 2013 12:09:59 -0700 Subject: vxlan: handle skb_clone failure If skb_clone fails if out of memory then just skip the fanout. Problem was introduced in 3.10 with: commit 6681712d67eef14c4ce793561c3231659153a320 Author: David Stevens Date: Fri Mar 15 04:35:51 2013 +0000 vxlan: generalize forwarding tables Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 15a73ec..dda997a 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1161,9 +1161,11 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev) struct sk_buff *skb1; skb1 = skb_clone(skb, GFP_ATOMIC); - rc1 = vxlan_xmit_one(skb1, dev, rdst, did_rsc); - if (rc == NETDEV_TX_OK) - rc = rc1; + if (skb1) { + rc1 = vxlan_xmit_one(skb1, dev, rdst, did_rsc); + if (rc == NETDEV_TX_OK) + rc = rc1; + } } rc1 = vxlan_xmit_one(skb, dev, rdst0, did_rsc); -- cgit v0.10.2 From 93725cbd22ed716bea8dc479b4925d40a4dbd0c6 Mon Sep 17 00:00:00 2001 From: Haiyang Zhang Date: Mon, 17 Jun 2013 15:36:49 -0700 Subject: Fix the VLAN_TAG_PRESENT in netvsc_recv_callback() We should call __vlan_hwaccel_put_tag() only if the packet comes from vlan, otherwise VLAN_TAG_PRESENT will always be added. Reported-by: Olaf Hering Signed-off-by: Haiyang Zhang Reviewed-by: K. Y. Srinivasan Signed-off-by: David S. Miller diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index ab2307b..4dccead 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -285,7 +285,9 @@ int netvsc_recv_callback(struct hv_device *device_obj, skb->protocol = eth_type_trans(skb, net); skb->ip_summed = CHECKSUM_NONE; - __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), packet->vlan_tci); + if (packet->vlan_tci & VLAN_TAG_PRESENT) + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), + packet->vlan_tci); net->stats.rx_packets++; net->stats.rx_bytes += packet->total_data_buflen; -- cgit v0.10.2 From ab69bde6b2e9c37456eeb0051a185446336aef9f Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 17 Jun 2013 22:44:02 +0200 Subject: alx: add a simple AR816x/AR817x device driver This is a very simple driver, based on the original vendor driver that Qualcomm/Atheros published/submitted previously, but reworked to make the code saner. However, it also lost a number of features (TSO/GSO, VLAN acceleration and multi- queue support) in the process, as well as debugging support features I didn't have any use for. The only thing I left is checksum offload. More features can obviously be added, but this seemed like a good start for having a driver in mainline at all. Johannes Stezenbach has verified that the driver works on AR8161, I have a AR8171 myself. The E2200 device ID I found on github in somebody's repository. Signed-off-by: Johannes Berg Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/atheros/Kconfig b/drivers/net/ethernet/atheros/Kconfig index 36d6abd..ad6aa1e9 100644 --- a/drivers/net/ethernet/atheros/Kconfig +++ b/drivers/net/ethernet/atheros/Kconfig @@ -67,4 +67,22 @@ config ATL1C To compile this driver as a module, choose M here. The module will be called atl1c. +config ALX + tristate "Qualcomm Atheros AR816x/AR817x support" + depends on PCI + select CRC32 + select NET_CORE + select MDIO + help + This driver supports the Qualcomm Atheros L1F ethernet adapter, + i.e. the following chipsets: + + 1969:1091 - AR8161 Gigabit Ethernet + 1969:1090 - AR8162 Fast Ethernet + 1969:10A1 - AR8171 Gigabit Ethernet + 1969:10A0 - AR8172 Fast Ethernet + + To compile this driver as a module, choose M here. The module + will be called alx. + endif # NET_VENDOR_ATHEROS diff --git a/drivers/net/ethernet/atheros/Makefile b/drivers/net/ethernet/atheros/Makefile index e7e76fb..5cf1c65 100644 --- a/drivers/net/ethernet/atheros/Makefile +++ b/drivers/net/ethernet/atheros/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_ATL1) += atlx/ obj-$(CONFIG_ATL2) += atlx/ obj-$(CONFIG_ATL1E) += atl1e/ obj-$(CONFIG_ATL1C) += atl1c/ +obj-$(CONFIG_ALX) += alx/ diff --git a/drivers/net/ethernet/atheros/alx/Makefile b/drivers/net/ethernet/atheros/alx/Makefile new file mode 100644 index 0000000..5901fa4 --- /dev/null +++ b/drivers/net/ethernet/atheros/alx/Makefile @@ -0,0 +1,3 @@ +obj-$(CONFIG_ALX) += alx.o +alx-objs := main.o ethtool.o hw.o +ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/ethernet/atheros/alx/alx.h b/drivers/net/ethernet/atheros/alx/alx.h new file mode 100644 index 0000000..50b3ae2 --- /dev/null +++ b/drivers/net/ethernet/atheros/alx/alx.h @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2013 Johannes Berg + * + * This file is free software: you may copy, redistribute and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, either version 2 of the License, or (at your + * option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2012 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _ALX_H_ +#define _ALX_H_ + +#include +#include +#include +#include +#include "hw.h" + +#define ALX_WATCHDOG_TIME (5 * HZ) + +struct alx_buffer { + struct sk_buff *skb; + DEFINE_DMA_UNMAP_ADDR(dma); + DEFINE_DMA_UNMAP_LEN(size); +}; + +struct alx_rx_queue { + struct alx_rrd *rrd; + dma_addr_t rrd_dma; + + struct alx_rfd *rfd; + dma_addr_t rfd_dma; + + struct alx_buffer *bufs; + + u16 write_idx, read_idx; + u16 rrd_read_idx; +}; +#define ALX_RX_ALLOC_THRESH 32 + +struct alx_tx_queue { + struct alx_txd *tpd; + dma_addr_t tpd_dma; + struct alx_buffer *bufs; + u16 write_idx, read_idx; +}; + +#define ALX_DEFAULT_TX_WORK 128 + +enum alx_device_quirks { + ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0), +}; + +struct alx_priv { + struct net_device *dev; + + struct alx_hw hw; + + /* all descriptor memory */ + struct { + dma_addr_t dma; + void *virt; + int size; + } descmem; + + /* protect int_mask updates */ + spinlock_t irq_lock; + u32 int_mask; + + int tx_ringsz; + int rx_ringsz; + int rxbuf_size; + + struct napi_struct napi; + struct alx_tx_queue txq; + struct alx_rx_queue rxq; + + struct work_struct link_check_wk; + struct work_struct reset_wk; + + u16 msg_enable; + + bool msi; +}; + +extern const struct ethtool_ops alx_ethtool_ops; +extern const char alx_drv_name[]; + +#endif diff --git a/drivers/net/ethernet/atheros/alx/ethtool.c b/drivers/net/ethernet/atheros/alx/ethtool.c new file mode 100644 index 0000000..6fa2aec --- /dev/null +++ b/drivers/net/ethernet/atheros/alx/ethtool.c @@ -0,0 +1,272 @@ +/* + * Copyright (c) 2013 Johannes Berg + * + * This file is free software: you may copy, redistribute and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, either version 2 of the License, or (at your + * option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2012 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "alx.h" +#include "reg.h" +#include "hw.h" + + +static int alx_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + + ecmd->supported = SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_100baseT_Half | + SUPPORTED_100baseT_Full | + SUPPORTED_Autoneg | + SUPPORTED_TP | + SUPPORTED_Pause; + if (alx_hw_giga(hw)) + ecmd->supported |= SUPPORTED_1000baseT_Full; + + ecmd->advertising = ADVERTISED_TP; + if (hw->adv_cfg & ADVERTISED_Autoneg) + ecmd->advertising |= hw->adv_cfg; + + ecmd->port = PORT_TP; + ecmd->phy_address = 0; + if (hw->adv_cfg & ADVERTISED_Autoneg) + ecmd->autoneg = AUTONEG_ENABLE; + else + ecmd->autoneg = AUTONEG_DISABLE; + ecmd->transceiver = XCVR_INTERNAL; + + if (hw->flowctrl & ALX_FC_ANEG && hw->adv_cfg & ADVERTISED_Autoneg) { + if (hw->flowctrl & ALX_FC_RX) { + ecmd->advertising |= ADVERTISED_Pause; + + if (!(hw->flowctrl & ALX_FC_TX)) + ecmd->advertising |= ADVERTISED_Asym_Pause; + } else if (hw->flowctrl & ALX_FC_TX) { + ecmd->advertising |= ADVERTISED_Asym_Pause; + } + } + + if (hw->link_speed != SPEED_UNKNOWN) { + ethtool_cmd_speed_set(ecmd, + hw->link_speed - hw->link_speed % 10); + ecmd->duplex = hw->link_speed % 10; + } else { + ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN); + ecmd->duplex = DUPLEX_UNKNOWN; + } + + return 0; +} + +static int alx_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + u32 adv_cfg; + + ASSERT_RTNL(); + + if (ecmd->autoneg == AUTONEG_ENABLE) { + if (ecmd->advertising & ADVERTISED_1000baseT_Half) + return -EINVAL; + adv_cfg = ecmd->advertising | ADVERTISED_Autoneg; + } else { + int speed = ethtool_cmd_speed(ecmd); + + switch (speed + ecmd->duplex) { + case SPEED_10 + DUPLEX_HALF: + adv_cfg = ADVERTISED_10baseT_Half; + break; + case SPEED_10 + DUPLEX_FULL: + adv_cfg = ADVERTISED_10baseT_Full; + break; + case SPEED_100 + DUPLEX_HALF: + adv_cfg = ADVERTISED_100baseT_Half; + break; + case SPEED_100 + DUPLEX_FULL: + adv_cfg = ADVERTISED_100baseT_Full; + break; + default: + return -EINVAL; + } + } + + hw->adv_cfg = adv_cfg; + return alx_setup_speed_duplex(hw, adv_cfg, hw->flowctrl); +} + +static void alx_get_pauseparam(struct net_device *netdev, + struct ethtool_pauseparam *pause) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + + if (hw->flowctrl & ALX_FC_ANEG && + hw->adv_cfg & ADVERTISED_Autoneg) + pause->autoneg = AUTONEG_ENABLE; + else + pause->autoneg = AUTONEG_DISABLE; + + if (hw->flowctrl & ALX_FC_TX) + pause->tx_pause = 1; + else + pause->tx_pause = 0; + + if (hw->flowctrl & ALX_FC_RX) + pause->rx_pause = 1; + else + pause->rx_pause = 0; +} + + +static int alx_set_pauseparam(struct net_device *netdev, + struct ethtool_pauseparam *pause) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + int err = 0; + bool reconfig_phy = false; + u8 fc = 0; + + if (pause->tx_pause) + fc |= ALX_FC_TX; + if (pause->rx_pause) + fc |= ALX_FC_RX; + if (pause->autoneg) + fc |= ALX_FC_ANEG; + + ASSERT_RTNL(); + + /* restart auto-neg for auto-mode */ + if (hw->adv_cfg & ADVERTISED_Autoneg) { + if (!((fc ^ hw->flowctrl) & ALX_FC_ANEG)) + reconfig_phy = true; + if (fc & hw->flowctrl & ALX_FC_ANEG && + (fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX)) + reconfig_phy = true; + } + + if (reconfig_phy) { + err = alx_setup_speed_duplex(hw, hw->adv_cfg, fc); + return err; + } + + /* flow control on mac */ + if ((fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX)) + alx_cfg_mac_flowcontrol(hw, fc); + + hw->flowctrl = fc; + + return 0; +} + +static u32 alx_get_msglevel(struct net_device *netdev) +{ + struct alx_priv *alx = netdev_priv(netdev); + + return alx->msg_enable; +} + +static void alx_set_msglevel(struct net_device *netdev, u32 data) +{ + struct alx_priv *alx = netdev_priv(netdev); + + alx->msg_enable = data; +} + +static void alx_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + + wol->supported = WAKE_MAGIC | WAKE_PHY; + wol->wolopts = 0; + + if (hw->sleep_ctrl & ALX_SLEEP_WOL_MAGIC) + wol->wolopts |= WAKE_MAGIC; + if (hw->sleep_ctrl & ALX_SLEEP_WOL_PHY) + wol->wolopts |= WAKE_PHY; +} + +static int alx_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + + if (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE | + WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)) + return -EOPNOTSUPP; + + hw->sleep_ctrl = 0; + + if (wol->wolopts & WAKE_MAGIC) + hw->sleep_ctrl |= ALX_SLEEP_WOL_MAGIC; + if (wol->wolopts & WAKE_PHY) + hw->sleep_ctrl |= ALX_SLEEP_WOL_PHY; + + device_set_wakeup_enable(&alx->hw.pdev->dev, hw->sleep_ctrl); + + return 0; +} + +static void alx_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *drvinfo) +{ + struct alx_priv *alx = netdev_priv(netdev); + + strlcpy(drvinfo->driver, alx_drv_name, sizeof(drvinfo->driver)); + strlcpy(drvinfo->bus_info, pci_name(alx->hw.pdev), + sizeof(drvinfo->bus_info)); +} + +const struct ethtool_ops alx_ethtool_ops = { + .get_settings = alx_get_settings, + .set_settings = alx_set_settings, + .get_pauseparam = alx_get_pauseparam, + .set_pauseparam = alx_set_pauseparam, + .get_drvinfo = alx_get_drvinfo, + .get_msglevel = alx_get_msglevel, + .set_msglevel = alx_set_msglevel, + .get_wol = alx_get_wol, + .set_wol = alx_set_wol, + .get_link = ethtool_op_get_link, +}; diff --git a/drivers/net/ethernet/atheros/alx/hw.c b/drivers/net/ethernet/atheros/alx/hw.c new file mode 100644 index 0000000..220a16a --- /dev/null +++ b/drivers/net/ethernet/atheros/alx/hw.c @@ -0,0 +1,1226 @@ +/* + * Copyright (c) 2013 Johannes Berg + * + * This file is free software: you may copy, redistribute and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, either version 2 of the License, or (at your + * option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2012 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include +#include +#include +#include +#include "reg.h" +#include "hw.h" + +static inline bool alx_is_rev_a(u8 rev) +{ + return rev == ALX_REV_A0 || rev == ALX_REV_A1; +} + +static int alx_wait_mdio_idle(struct alx_hw *hw) +{ + u32 val; + int i; + + for (i = 0; i < ALX_MDIO_MAX_AC_TO; i++) { + val = alx_read_mem32(hw, ALX_MDIO); + if (!(val & ALX_MDIO_BUSY)) + return 0; + udelay(10); + } + + return -ETIMEDOUT; +} + +static int alx_read_phy_core(struct alx_hw *hw, bool ext, u8 dev, + u16 reg, u16 *phy_data) +{ + u32 val, clk_sel; + int err; + + *phy_data = 0; + + /* use slow clock when it's in hibernation status */ + clk_sel = hw->link_speed != SPEED_UNKNOWN ? + ALX_MDIO_CLK_SEL_25MD4 : + ALX_MDIO_CLK_SEL_25MD128; + + if (ext) { + val = dev << ALX_MDIO_EXTN_DEVAD_SHIFT | + reg << ALX_MDIO_EXTN_REG_SHIFT; + alx_write_mem32(hw, ALX_MDIO_EXTN, val); + + val = ALX_MDIO_SPRES_PRMBL | ALX_MDIO_START | + ALX_MDIO_MODE_EXT | ALX_MDIO_OP_READ | + clk_sel << ALX_MDIO_CLK_SEL_SHIFT; + } else { + val = ALX_MDIO_SPRES_PRMBL | + clk_sel << ALX_MDIO_CLK_SEL_SHIFT | + reg << ALX_MDIO_REG_SHIFT | + ALX_MDIO_START | ALX_MDIO_OP_READ; + } + alx_write_mem32(hw, ALX_MDIO, val); + + err = alx_wait_mdio_idle(hw); + if (err) + return err; + val = alx_read_mem32(hw, ALX_MDIO); + *phy_data = ALX_GET_FIELD(val, ALX_MDIO_DATA); + return 0; +} + +static int alx_write_phy_core(struct alx_hw *hw, bool ext, u8 dev, + u16 reg, u16 phy_data) +{ + u32 val, clk_sel; + + /* use slow clock when it's in hibernation status */ + clk_sel = hw->link_speed != SPEED_UNKNOWN ? + ALX_MDIO_CLK_SEL_25MD4 : + ALX_MDIO_CLK_SEL_25MD128; + + if (ext) { + val = dev << ALX_MDIO_EXTN_DEVAD_SHIFT | + reg << ALX_MDIO_EXTN_REG_SHIFT; + alx_write_mem32(hw, ALX_MDIO_EXTN, val); + + val = ALX_MDIO_SPRES_PRMBL | + clk_sel << ALX_MDIO_CLK_SEL_SHIFT | + phy_data << ALX_MDIO_DATA_SHIFT | + ALX_MDIO_START | ALX_MDIO_MODE_EXT; + } else { + val = ALX_MDIO_SPRES_PRMBL | + clk_sel << ALX_MDIO_CLK_SEL_SHIFT | + reg << ALX_MDIO_REG_SHIFT | + phy_data << ALX_MDIO_DATA_SHIFT | + ALX_MDIO_START; + } + alx_write_mem32(hw, ALX_MDIO, val); + + return alx_wait_mdio_idle(hw); +} + +static int __alx_read_phy_reg(struct alx_hw *hw, u16 reg, u16 *phy_data) +{ + return alx_read_phy_core(hw, false, 0, reg, phy_data); +} + +static int __alx_write_phy_reg(struct alx_hw *hw, u16 reg, u16 phy_data) +{ + return alx_write_phy_core(hw, false, 0, reg, phy_data); +} + +static int __alx_read_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 *pdata) +{ + return alx_read_phy_core(hw, true, dev, reg, pdata); +} + +static int __alx_write_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 data) +{ + return alx_write_phy_core(hw, true, dev, reg, data); +} + +static int __alx_read_phy_dbg(struct alx_hw *hw, u16 reg, u16 *pdata) +{ + int err; + + err = __alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, reg); + if (err) + return err; + + return __alx_read_phy_reg(hw, ALX_MII_DBG_DATA, pdata); +} + +static int __alx_write_phy_dbg(struct alx_hw *hw, u16 reg, u16 data) +{ + int err; + + err = __alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, reg); + if (err) + return err; + + return __alx_write_phy_reg(hw, ALX_MII_DBG_DATA, data); +} + +int alx_read_phy_reg(struct alx_hw *hw, u16 reg, u16 *phy_data) +{ + int err; + + spin_lock(&hw->mdio_lock); + err = __alx_read_phy_reg(hw, reg, phy_data); + spin_unlock(&hw->mdio_lock); + + return err; +} + +int alx_write_phy_reg(struct alx_hw *hw, u16 reg, u16 phy_data) +{ + int err; + + spin_lock(&hw->mdio_lock); + err = __alx_write_phy_reg(hw, reg, phy_data); + spin_unlock(&hw->mdio_lock); + + return err; +} + +int alx_read_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 *pdata) +{ + int err; + + spin_lock(&hw->mdio_lock); + err = __alx_read_phy_ext(hw, dev, reg, pdata); + spin_unlock(&hw->mdio_lock); + + return err; +} + +int alx_write_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 data) +{ + int err; + + spin_lock(&hw->mdio_lock); + err = __alx_write_phy_ext(hw, dev, reg, data); + spin_unlock(&hw->mdio_lock); + + return err; +} + +static int alx_read_phy_dbg(struct alx_hw *hw, u16 reg, u16 *pdata) +{ + int err; + + spin_lock(&hw->mdio_lock); + err = __alx_read_phy_dbg(hw, reg, pdata); + spin_unlock(&hw->mdio_lock); + + return err; +} + +static int alx_write_phy_dbg(struct alx_hw *hw, u16 reg, u16 data) +{ + int err; + + spin_lock(&hw->mdio_lock); + err = __alx_write_phy_dbg(hw, reg, data); + spin_unlock(&hw->mdio_lock); + + return err; +} + +static u16 alx_get_phy_config(struct alx_hw *hw) +{ + u32 val; + u16 phy_val; + + val = alx_read_mem32(hw, ALX_PHY_CTRL); + /* phy in reset */ + if ((val & ALX_PHY_CTRL_DSPRST_OUT) == 0) + return ALX_DRV_PHY_UNKNOWN; + + val = alx_read_mem32(hw, ALX_DRV); + val = ALX_GET_FIELD(val, ALX_DRV_PHY); + if (ALX_DRV_PHY_UNKNOWN == val) + return ALX_DRV_PHY_UNKNOWN; + + alx_read_phy_reg(hw, ALX_MII_DBG_ADDR, &phy_val); + if (ALX_PHY_INITED == phy_val) + return val; + + return ALX_DRV_PHY_UNKNOWN; +} + +static bool alx_wait_reg(struct alx_hw *hw, u32 reg, u32 wait, u32 *val) +{ + u32 read; + int i; + + for (i = 0; i < ALX_SLD_MAX_TO; i++) { + read = alx_read_mem32(hw, reg); + if ((read & wait) == 0) { + if (val) + *val = read; + return true; + } + mdelay(1); + } + + return false; +} + +static bool alx_read_macaddr(struct alx_hw *hw, u8 *addr) +{ + u32 mac0, mac1; + + mac0 = alx_read_mem32(hw, ALX_STAD0); + mac1 = alx_read_mem32(hw, ALX_STAD1); + + /* addr should be big-endian */ + *(__be32 *)(addr + 2) = cpu_to_be32(mac0); + *(__be16 *)addr = cpu_to_be16(mac1); + + return is_valid_ether_addr(addr); +} + +int alx_get_perm_macaddr(struct alx_hw *hw, u8 *addr) +{ + u32 val; + + /* try to get it from register first */ + if (alx_read_macaddr(hw, addr)) + return 0; + + /* try to load from efuse */ + if (!alx_wait_reg(hw, ALX_SLD, ALX_SLD_STAT | ALX_SLD_START, &val)) + return -EIO; + alx_write_mem32(hw, ALX_SLD, val | ALX_SLD_START); + if (!alx_wait_reg(hw, ALX_SLD, ALX_SLD_START, NULL)) + return -EIO; + if (alx_read_macaddr(hw, addr)) + return 0; + + /* try to load from flash/eeprom (if present) */ + val = alx_read_mem32(hw, ALX_EFLD); + if (val & (ALX_EFLD_F_EXIST | ALX_EFLD_E_EXIST)) { + if (!alx_wait_reg(hw, ALX_EFLD, + ALX_EFLD_STAT | ALX_EFLD_START, &val)) + return -EIO; + alx_write_mem32(hw, ALX_EFLD, val | ALX_EFLD_START); + if (!alx_wait_reg(hw, ALX_EFLD, ALX_EFLD_START, NULL)) + return -EIO; + if (alx_read_macaddr(hw, addr)) + return 0; + } + + return -EIO; +} + +void alx_set_macaddr(struct alx_hw *hw, const u8 *addr) +{ + u32 val; + + /* for example: 00-0B-6A-F6-00-DC * STAD0=6AF600DC, STAD1=000B */ + val = be32_to_cpu(*(__be32 *)(addr + 2)); + alx_write_mem32(hw, ALX_STAD0, val); + val = be16_to_cpu(*(__be16 *)addr); + alx_write_mem32(hw, ALX_STAD1, val); +} + +static void alx_enable_osc(struct alx_hw *hw) +{ + u32 val; + + /* rising edge */ + val = alx_read_mem32(hw, ALX_MISC); + alx_write_mem32(hw, ALX_MISC, val & ~ALX_MISC_INTNLOSC_OPEN); + alx_write_mem32(hw, ALX_MISC, val | ALX_MISC_INTNLOSC_OPEN); +} + +static void alx_reset_osc(struct alx_hw *hw, u8 rev) +{ + u32 val, val2; + + /* clear Internal OSC settings, switching OSC by hw itself */ + val = alx_read_mem32(hw, ALX_MISC3); + alx_write_mem32(hw, ALX_MISC3, + (val & ~ALX_MISC3_25M_BY_SW) | + ALX_MISC3_25M_NOTO_INTNL); + + /* 25M clk from chipset may be unstable 1s after de-assert of + * PERST, driver need re-calibrate before enter Sleep for WoL + */ + val = alx_read_mem32(hw, ALX_MISC); + if (rev >= ALX_REV_B0) { + /* restore over current protection def-val, + * this val could be reset by MAC-RST + */ + ALX_SET_FIELD(val, ALX_MISC_PSW_OCP, ALX_MISC_PSW_OCP_DEF); + /* a 0->1 change will update the internal val of osc */ + val &= ~ALX_MISC_INTNLOSC_OPEN; + alx_write_mem32(hw, ALX_MISC, val); + alx_write_mem32(hw, ALX_MISC, val | ALX_MISC_INTNLOSC_OPEN); + /* hw will automatically dis OSC after cab. */ + val2 = alx_read_mem32(hw, ALX_MSIC2); + val2 &= ~ALX_MSIC2_CALB_START; + alx_write_mem32(hw, ALX_MSIC2, val2); + alx_write_mem32(hw, ALX_MSIC2, val2 | ALX_MSIC2_CALB_START); + } else { + val &= ~ALX_MISC_INTNLOSC_OPEN; + /* disable isolate for rev A devices */ + if (alx_is_rev_a(rev)) + val &= ~ALX_MISC_ISO_EN; + + alx_write_mem32(hw, ALX_MISC, val | ALX_MISC_INTNLOSC_OPEN); + alx_write_mem32(hw, ALX_MISC, val); + } + + udelay(20); +} + +static int alx_stop_mac(struct alx_hw *hw) +{ + u32 rxq, txq, val; + u16 i; + + rxq = alx_read_mem32(hw, ALX_RXQ0); + alx_write_mem32(hw, ALX_RXQ0, rxq & ~ALX_RXQ0_EN); + txq = alx_read_mem32(hw, ALX_TXQ0); + alx_write_mem32(hw, ALX_TXQ0, txq & ~ALX_TXQ0_EN); + + udelay(40); + + hw->rx_ctrl &= ~(ALX_MAC_CTRL_RX_EN | ALX_MAC_CTRL_TX_EN); + alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl); + + for (i = 0; i < ALX_DMA_MAC_RST_TO; i++) { + val = alx_read_mem32(hw, ALX_MAC_STS); + if (!(val & ALX_MAC_STS_IDLE)) + return 0; + udelay(10); + } + + return -ETIMEDOUT; +} + +int alx_reset_mac(struct alx_hw *hw) +{ + u32 val, pmctrl; + int i, ret; + u8 rev; + bool a_cr; + + pmctrl = 0; + rev = alx_hw_revision(hw); + a_cr = alx_is_rev_a(rev) && alx_hw_with_cr(hw); + + /* disable all interrupts, RXQ/TXQ */ + alx_write_mem32(hw, ALX_MSIX_MASK, 0xFFFFFFFF); + alx_write_mem32(hw, ALX_IMR, 0); + alx_write_mem32(hw, ALX_ISR, ALX_ISR_DIS); + + ret = alx_stop_mac(hw); + if (ret) + return ret; + + /* mac reset workaroud */ + alx_write_mem32(hw, ALX_RFD_PIDX, 1); + + /* dis l0s/l1 before mac reset */ + if (a_cr) { + pmctrl = alx_read_mem32(hw, ALX_PMCTRL); + if (pmctrl & (ALX_PMCTRL_L1_EN | ALX_PMCTRL_L0S_EN)) + alx_write_mem32(hw, ALX_PMCTRL, + pmctrl & ~(ALX_PMCTRL_L1_EN | + ALX_PMCTRL_L0S_EN)); + } + + /* reset whole mac safely */ + val = alx_read_mem32(hw, ALX_MASTER); + alx_write_mem32(hw, ALX_MASTER, + val | ALX_MASTER_DMA_MAC_RST | ALX_MASTER_OOB_DIS); + + /* make sure it's real idle */ + udelay(10); + for (i = 0; i < ALX_DMA_MAC_RST_TO; i++) { + val = alx_read_mem32(hw, ALX_RFD_PIDX); + if (val == 0) + break; + udelay(10); + } + for (; i < ALX_DMA_MAC_RST_TO; i++) { + val = alx_read_mem32(hw, ALX_MASTER); + if ((val & ALX_MASTER_DMA_MAC_RST) == 0) + break; + udelay(10); + } + if (i == ALX_DMA_MAC_RST_TO) + return -EIO; + udelay(10); + + if (a_cr) { + alx_write_mem32(hw, ALX_MASTER, val | ALX_MASTER_PCLKSEL_SRDS); + /* restore l0s / l1 */ + if (pmctrl & (ALX_PMCTRL_L1_EN | ALX_PMCTRL_L0S_EN)) + alx_write_mem32(hw, ALX_PMCTRL, pmctrl); + } + + alx_reset_osc(hw, rev); + + /* clear Internal OSC settings, switching OSC by hw itself, + * disable isolate for rev A devices + */ + val = alx_read_mem32(hw, ALX_MISC3); + alx_write_mem32(hw, ALX_MISC3, + (val & ~ALX_MISC3_25M_BY_SW) | + ALX_MISC3_25M_NOTO_INTNL); + val = alx_read_mem32(hw, ALX_MISC); + val &= ~ALX_MISC_INTNLOSC_OPEN; + if (alx_is_rev_a(rev)) + val &= ~ALX_MISC_ISO_EN; + alx_write_mem32(hw, ALX_MISC, val); + udelay(20); + + /* driver control speed/duplex, hash-alg */ + alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl); + + val = alx_read_mem32(hw, ALX_SERDES); + alx_write_mem32(hw, ALX_SERDES, + val | ALX_SERDES_MACCLK_SLWDWN | + ALX_SERDES_PHYCLK_SLWDWN); + + return 0; +} + +void alx_reset_phy(struct alx_hw *hw) +{ + int i; + u32 val; + u16 phy_val; + + /* (DSP)reset PHY core */ + val = alx_read_mem32(hw, ALX_PHY_CTRL); + val &= ~(ALX_PHY_CTRL_DSPRST_OUT | ALX_PHY_CTRL_IDDQ | + ALX_PHY_CTRL_GATE_25M | ALX_PHY_CTRL_POWER_DOWN | + ALX_PHY_CTRL_CLS); + val |= ALX_PHY_CTRL_RST_ANALOG; + + val |= (ALX_PHY_CTRL_HIB_PULSE | ALX_PHY_CTRL_HIB_EN); + alx_write_mem32(hw, ALX_PHY_CTRL, val); + udelay(10); + alx_write_mem32(hw, ALX_PHY_CTRL, val | ALX_PHY_CTRL_DSPRST_OUT); + + for (i = 0; i < ALX_PHY_CTRL_DSPRST_TO; i++) + udelay(10); + + /* phy power saving & hib */ + alx_write_phy_dbg(hw, ALX_MIIDBG_LEGCYPS, ALX_LEGCYPS_DEF); + alx_write_phy_dbg(hw, ALX_MIIDBG_SYSMODCTRL, + ALX_SYSMODCTRL_IECHOADJ_DEF); + alx_write_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_VDRVBIAS, + ALX_VDRVBIAS_DEF); + + /* EEE advertisement */ + val = alx_read_mem32(hw, ALX_LPI_CTRL); + alx_write_mem32(hw, ALX_LPI_CTRL, val & ~ALX_LPI_CTRL_EN); + alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_LOCAL_EEEADV, 0); + + /* phy power saving */ + alx_write_phy_dbg(hw, ALX_MIIDBG_TST10BTCFG, ALX_TST10BTCFG_DEF); + alx_write_phy_dbg(hw, ALX_MIIDBG_SRDSYSMOD, ALX_SRDSYSMOD_DEF); + alx_write_phy_dbg(hw, ALX_MIIDBG_TST100BTCFG, ALX_TST100BTCFG_DEF); + alx_write_phy_dbg(hw, ALX_MIIDBG_ANACTRL, ALX_ANACTRL_DEF); + alx_read_phy_dbg(hw, ALX_MIIDBG_GREENCFG2, &phy_val); + alx_write_phy_dbg(hw, ALX_MIIDBG_GREENCFG2, + phy_val & ~ALX_GREENCFG2_GATE_DFSE_EN); + /* rtl8139c, 120m issue */ + alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_NLP78, + ALX_MIIEXT_NLP78_120M_DEF); + alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_S3DIG10, + ALX_MIIEXT_S3DIG10_DEF); + + if (hw->lnk_patch) { + /* Turn off half amplitude */ + alx_read_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL3, + &phy_val); + alx_write_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL3, + phy_val | ALX_CLDCTRL3_BP_CABLE1TH_DET_GT); + /* Turn off Green feature */ + alx_read_phy_dbg(hw, ALX_MIIDBG_GREENCFG2, &phy_val); + alx_write_phy_dbg(hw, ALX_MIIDBG_GREENCFG2, + phy_val | ALX_GREENCFG2_BP_GREEN); + /* Turn off half Bias */ + alx_read_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL5, + &phy_val); + alx_write_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL5, + phy_val | ALX_CLDCTRL5_BP_VD_HLFBIAS); + } + + /* set phy interrupt mask */ + alx_write_phy_reg(hw, ALX_MII_IER, ALX_IER_LINK_UP | ALX_IER_LINK_DOWN); +} + +#define ALX_PCI_CMD (PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO) + +void alx_reset_pcie(struct alx_hw *hw) +{ + u8 rev = alx_hw_revision(hw); + u32 val; + u16 val16; + + /* Workaround for PCI problem when BIOS sets MMRBC incorrectly. */ + pci_read_config_word(hw->pdev, PCI_COMMAND, &val16); + if (!(val16 & ALX_PCI_CMD) || (val16 & PCI_COMMAND_INTX_DISABLE)) { + val16 = (val16 | ALX_PCI_CMD) & ~PCI_COMMAND_INTX_DISABLE; + pci_write_config_word(hw->pdev, PCI_COMMAND, val16); + } + + /* clear WoL setting/status */ + val = alx_read_mem32(hw, ALX_WOL0); + alx_write_mem32(hw, ALX_WOL0, 0); + + val = alx_read_mem32(hw, ALX_PDLL_TRNS1); + alx_write_mem32(hw, ALX_PDLL_TRNS1, val & ~ALX_PDLL_TRNS1_D3PLLOFF_EN); + + /* mask some pcie error bits */ + val = alx_read_mem32(hw, ALX_UE_SVRT); + val &= ~(ALX_UE_SVRT_DLPROTERR | ALX_UE_SVRT_FCPROTERR); + alx_write_mem32(hw, ALX_UE_SVRT, val); + + /* wol 25M & pclk */ + val = alx_read_mem32(hw, ALX_MASTER); + if (alx_is_rev_a(rev) && alx_hw_with_cr(hw)) { + if ((val & ALX_MASTER_WAKEN_25M) == 0 || + (val & ALX_MASTER_PCLKSEL_SRDS) == 0) + alx_write_mem32(hw, ALX_MASTER, + val | ALX_MASTER_PCLKSEL_SRDS | + ALX_MASTER_WAKEN_25M); + } else { + if ((val & ALX_MASTER_WAKEN_25M) == 0 || + (val & ALX_MASTER_PCLKSEL_SRDS) != 0) + alx_write_mem32(hw, ALX_MASTER, + (val & ~ALX_MASTER_PCLKSEL_SRDS) | + ALX_MASTER_WAKEN_25M); + } + + /* ASPM setting */ + alx_enable_aspm(hw, true, true); + + udelay(10); +} + +void alx_start_mac(struct alx_hw *hw) +{ + u32 mac, txq, rxq; + + rxq = alx_read_mem32(hw, ALX_RXQ0); + alx_write_mem32(hw, ALX_RXQ0, rxq | ALX_RXQ0_EN); + txq = alx_read_mem32(hw, ALX_TXQ0); + alx_write_mem32(hw, ALX_TXQ0, txq | ALX_TXQ0_EN); + + mac = hw->rx_ctrl; + if (hw->link_speed % 10 == DUPLEX_FULL) + mac |= ALX_MAC_CTRL_FULLD; + else + mac &= ~ALX_MAC_CTRL_FULLD; + ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED, + hw->link_speed >= SPEED_1000 ? ALX_MAC_CTRL_SPEED_1000 : + ALX_MAC_CTRL_SPEED_10_100); + mac |= ALX_MAC_CTRL_TX_EN | ALX_MAC_CTRL_RX_EN; + hw->rx_ctrl = mac; + alx_write_mem32(hw, ALX_MAC_CTRL, mac); +} + +void alx_cfg_mac_flowcontrol(struct alx_hw *hw, u8 fc) +{ + if (fc & ALX_FC_RX) + hw->rx_ctrl |= ALX_MAC_CTRL_RXFC_EN; + else + hw->rx_ctrl &= ~ALX_MAC_CTRL_RXFC_EN; + + if (fc & ALX_FC_TX) + hw->rx_ctrl |= ALX_MAC_CTRL_TXFC_EN; + else + hw->rx_ctrl &= ~ALX_MAC_CTRL_TXFC_EN; + + alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl); +} + +void alx_enable_aspm(struct alx_hw *hw, bool l0s_en, bool l1_en) +{ + u32 pmctrl; + u8 rev = alx_hw_revision(hw); + + pmctrl = alx_read_mem32(hw, ALX_PMCTRL); + + ALX_SET_FIELD(pmctrl, ALX_PMCTRL_LCKDET_TIMER, + ALX_PMCTRL_LCKDET_TIMER_DEF); + pmctrl |= ALX_PMCTRL_RCVR_WT_1US | + ALX_PMCTRL_L1_CLKSW_EN | + ALX_PMCTRL_L1_SRDSRX_PWD; + ALX_SET_FIELD(pmctrl, ALX_PMCTRL_L1REQ_TO, ALX_PMCTRL_L1REG_TO_DEF); + ALX_SET_FIELD(pmctrl, ALX_PMCTRL_L1_TIMER, ALX_PMCTRL_L1_TIMER_16US); + pmctrl &= ~(ALX_PMCTRL_L1_SRDS_EN | + ALX_PMCTRL_L1_SRDSPLL_EN | + ALX_PMCTRL_L1_BUFSRX_EN | + ALX_PMCTRL_SADLY_EN | + ALX_PMCTRL_HOTRST_WTEN| + ALX_PMCTRL_L0S_EN | + ALX_PMCTRL_L1_EN | + ALX_PMCTRL_ASPM_FCEN | + ALX_PMCTRL_TXL1_AFTER_L0S | + ALX_PMCTRL_RXL1_AFTER_L0S); + if (alx_is_rev_a(rev) && alx_hw_with_cr(hw)) + pmctrl |= ALX_PMCTRL_L1_SRDS_EN | ALX_PMCTRL_L1_SRDSPLL_EN; + + if (l0s_en) + pmctrl |= (ALX_PMCTRL_L0S_EN | ALX_PMCTRL_ASPM_FCEN); + if (l1_en) + pmctrl |= (ALX_PMCTRL_L1_EN | ALX_PMCTRL_ASPM_FCEN); + + alx_write_mem32(hw, ALX_PMCTRL, pmctrl); +} + + +static u32 ethadv_to_hw_cfg(struct alx_hw *hw, u32 ethadv_cfg) +{ + u32 cfg = 0; + + if (ethadv_cfg & ADVERTISED_Autoneg) { + cfg |= ALX_DRV_PHY_AUTO; + if (ethadv_cfg & ADVERTISED_10baseT_Half) + cfg |= ALX_DRV_PHY_10; + if (ethadv_cfg & ADVERTISED_10baseT_Full) + cfg |= ALX_DRV_PHY_10 | ALX_DRV_PHY_DUPLEX; + if (ethadv_cfg & ADVERTISED_100baseT_Half) + cfg |= ALX_DRV_PHY_100; + if (ethadv_cfg & ADVERTISED_100baseT_Full) + cfg |= ALX_DRV_PHY_100 | ALX_DRV_PHY_DUPLEX; + if (ethadv_cfg & ADVERTISED_1000baseT_Half) + cfg |= ALX_DRV_PHY_1000; + if (ethadv_cfg & ADVERTISED_1000baseT_Full) + cfg |= ALX_DRV_PHY_100 | ALX_DRV_PHY_DUPLEX; + if (ethadv_cfg & ADVERTISED_Pause) + cfg |= ADVERTISE_PAUSE_CAP; + if (ethadv_cfg & ADVERTISED_Asym_Pause) + cfg |= ADVERTISE_PAUSE_ASYM; + } else { + switch (ethadv_cfg) { + case ADVERTISED_10baseT_Half: + cfg |= ALX_DRV_PHY_10; + break; + case ADVERTISED_100baseT_Half: + cfg |= ALX_DRV_PHY_100; + break; + case ADVERTISED_10baseT_Full: + cfg |= ALX_DRV_PHY_10 | ALX_DRV_PHY_DUPLEX; + break; + case ADVERTISED_100baseT_Full: + cfg |= ALX_DRV_PHY_100 | ALX_DRV_PHY_DUPLEX; + break; + } + } + + return cfg; +} + +int alx_setup_speed_duplex(struct alx_hw *hw, u32 ethadv, u8 flowctrl) +{ + u16 adv, giga, cr; + u32 val; + int err = 0; + + alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, 0); + val = alx_read_mem32(hw, ALX_DRV); + ALX_SET_FIELD(val, ALX_DRV_PHY, 0); + + if (ethadv & ADVERTISED_Autoneg) { + adv = ADVERTISE_CSMA; + adv |= ethtool_adv_to_mii_adv_t(ethadv); + + if (flowctrl & ALX_FC_ANEG) { + if (flowctrl & ALX_FC_RX) { + adv |= ADVERTISED_Pause; + if (!(flowctrl & ALX_FC_TX)) + adv |= ADVERTISED_Asym_Pause; + } else if (flowctrl & ALX_FC_TX) { + adv |= ADVERTISED_Asym_Pause; + } + } + giga = 0; + if (alx_hw_giga(hw)) + giga = ethtool_adv_to_mii_ctrl1000_t(ethadv); + + cr = BMCR_RESET | BMCR_ANENABLE | BMCR_ANRESTART; + + if (alx_write_phy_reg(hw, MII_ADVERTISE, adv) || + alx_write_phy_reg(hw, MII_CTRL1000, giga) || + alx_write_phy_reg(hw, MII_BMCR, cr)) + err = -EBUSY; + } else { + cr = BMCR_RESET; + if (ethadv == ADVERTISED_100baseT_Half || + ethadv == ADVERTISED_100baseT_Full) + cr |= BMCR_SPEED100; + if (ethadv == ADVERTISED_10baseT_Full || + ethadv == ADVERTISED_100baseT_Full) + cr |= BMCR_FULLDPLX; + + err = alx_write_phy_reg(hw, MII_BMCR, cr); + } + + if (!err) { + alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, ALX_PHY_INITED); + val |= ethadv_to_hw_cfg(hw, ethadv); + } + + alx_write_mem32(hw, ALX_DRV, val); + + return err; +} + + +void alx_post_phy_link(struct alx_hw *hw) +{ + u16 phy_val, len, agc; + u8 revid = alx_hw_revision(hw); + bool adj_th = revid == ALX_REV_B0; + int speed; + + if (hw->link_speed == SPEED_UNKNOWN) + speed = SPEED_UNKNOWN; + else + speed = hw->link_speed - hw->link_speed % 10; + + if (revid != ALX_REV_B0 && !alx_is_rev_a(revid)) + return; + + /* 1000BT/AZ, wrong cable length */ + if (speed != SPEED_UNKNOWN) { + alx_read_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL6, + &phy_val); + len = ALX_GET_FIELD(phy_val, ALX_CLDCTRL6_CAB_LEN); + alx_read_phy_dbg(hw, ALX_MIIDBG_AGC, &phy_val); + agc = ALX_GET_FIELD(phy_val, ALX_AGC_2_VGA); + + if ((speed == SPEED_1000 && + (len > ALX_CLDCTRL6_CAB_LEN_SHORT1G || + (len == 0 && agc > ALX_AGC_LONG1G_LIMT))) || + (speed == SPEED_100 && + (len > ALX_CLDCTRL6_CAB_LEN_SHORT100M || + (len == 0 && agc > ALX_AGC_LONG100M_LIMT)))) { + alx_write_phy_dbg(hw, ALX_MIIDBG_AZ_ANADECT, + ALX_AZ_ANADECT_LONG); + alx_read_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE, + &phy_val); + alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE, + phy_val | ALX_AFE_10BT_100M_TH); + } else { + alx_write_phy_dbg(hw, ALX_MIIDBG_AZ_ANADECT, + ALX_AZ_ANADECT_DEF); + alx_read_phy_ext(hw, ALX_MIIEXT_ANEG, + ALX_MIIEXT_AFE, &phy_val); + alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE, + phy_val & ~ALX_AFE_10BT_100M_TH); + } + + /* threshold adjust */ + if (adj_th && hw->lnk_patch) { + if (speed == SPEED_100) { + alx_write_phy_dbg(hw, ALX_MIIDBG_MSE16DB, + ALX_MSE16DB_UP); + } else if (speed == SPEED_1000) { + /* + * Giga link threshold, raise the tolerance of + * noise 50% + */ + alx_read_phy_dbg(hw, ALX_MIIDBG_MSE20DB, + &phy_val); + ALX_SET_FIELD(phy_val, ALX_MSE20DB_TH, + ALX_MSE20DB_TH_HI); + alx_write_phy_dbg(hw, ALX_MIIDBG_MSE20DB, + phy_val); + } + } + } else { + alx_read_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE, + &phy_val); + alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE, + phy_val & ~ALX_AFE_10BT_100M_TH); + + if (adj_th && hw->lnk_patch) { + alx_write_phy_dbg(hw, ALX_MIIDBG_MSE16DB, + ALX_MSE16DB_DOWN); + alx_read_phy_dbg(hw, ALX_MIIDBG_MSE20DB, &phy_val); + ALX_SET_FIELD(phy_val, ALX_MSE20DB_TH, + ALX_MSE20DB_TH_DEF); + alx_write_phy_dbg(hw, ALX_MIIDBG_MSE20DB, phy_val); + } + } +} + + +/* NOTE: + * 1. phy link must be established before calling this function + * 2. wol option (pattern,magic,link,etc.) is configed before call it. + */ +int alx_pre_suspend(struct alx_hw *hw, int speed) +{ + u32 master, mac, phy, val; + int err = 0; + + master = alx_read_mem32(hw, ALX_MASTER); + master &= ~ALX_MASTER_PCLKSEL_SRDS; + mac = hw->rx_ctrl; + /* 10/100 half */ + ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED, ALX_MAC_CTRL_SPEED_10_100); + mac &= ~(ALX_MAC_CTRL_FULLD | ALX_MAC_CTRL_RX_EN | ALX_MAC_CTRL_TX_EN); + + phy = alx_read_mem32(hw, ALX_PHY_CTRL); + phy &= ~(ALX_PHY_CTRL_DSPRST_OUT | ALX_PHY_CTRL_CLS); + phy |= ALX_PHY_CTRL_RST_ANALOG | ALX_PHY_CTRL_HIB_PULSE | + ALX_PHY_CTRL_HIB_EN; + + /* without any activity */ + if (!(hw->sleep_ctrl & ALX_SLEEP_ACTIVE)) { + err = alx_write_phy_reg(hw, ALX_MII_IER, 0); + if (err) + return err; + phy |= ALX_PHY_CTRL_IDDQ | ALX_PHY_CTRL_POWER_DOWN; + } else { + if (hw->sleep_ctrl & (ALX_SLEEP_WOL_MAGIC | ALX_SLEEP_CIFS)) + mac |= ALX_MAC_CTRL_RX_EN | ALX_MAC_CTRL_BRD_EN; + if (hw->sleep_ctrl & ALX_SLEEP_CIFS) + mac |= ALX_MAC_CTRL_TX_EN; + if (speed % 10 == DUPLEX_FULL) + mac |= ALX_MAC_CTRL_FULLD; + if (speed >= SPEED_1000) + ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED, + ALX_MAC_CTRL_SPEED_1000); + phy |= ALX_PHY_CTRL_DSPRST_OUT; + err = alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, + ALX_MIIEXT_S3DIG10, + ALX_MIIEXT_S3DIG10_SL); + if (err) + return err; + } + + alx_enable_osc(hw); + hw->rx_ctrl = mac; + alx_write_mem32(hw, ALX_MASTER, master); + alx_write_mem32(hw, ALX_MAC_CTRL, mac); + alx_write_mem32(hw, ALX_PHY_CTRL, phy); + + /* set val of PDLL D3PLLOFF */ + val = alx_read_mem32(hw, ALX_PDLL_TRNS1); + val |= ALX_PDLL_TRNS1_D3PLLOFF_EN; + alx_write_mem32(hw, ALX_PDLL_TRNS1, val); + + return 0; +} + +bool alx_phy_configured(struct alx_hw *hw) +{ + u32 cfg, hw_cfg; + + cfg = ethadv_to_hw_cfg(hw, hw->adv_cfg); + cfg = ALX_GET_FIELD(cfg, ALX_DRV_PHY); + hw_cfg = alx_get_phy_config(hw); + + if (hw_cfg == ALX_DRV_PHY_UNKNOWN) + return false; + + return cfg == hw_cfg; +} + +int alx_get_phy_link(struct alx_hw *hw, int *speed) +{ + struct pci_dev *pdev = hw->pdev; + u16 bmsr, giga; + int err; + + err = alx_read_phy_reg(hw, MII_BMSR, &bmsr); + if (err) + return err; + + err = alx_read_phy_reg(hw, MII_BMSR, &bmsr); + if (err) + return err; + + if (!(bmsr & BMSR_LSTATUS)) { + *speed = SPEED_UNKNOWN; + return 0; + } + + /* speed/duplex result is saved in PHY Specific Status Register */ + err = alx_read_phy_reg(hw, ALX_MII_GIGA_PSSR, &giga); + if (err) + return err; + + if (!(giga & ALX_GIGA_PSSR_SPD_DPLX_RESOLVED)) + goto wrong_speed; + + switch (giga & ALX_GIGA_PSSR_SPEED) { + case ALX_GIGA_PSSR_1000MBS: + *speed = SPEED_1000; + break; + case ALX_GIGA_PSSR_100MBS: + *speed = SPEED_100; + break; + case ALX_GIGA_PSSR_10MBS: + *speed = SPEED_10; + break; + default: + goto wrong_speed; + } + + *speed += (giga & ALX_GIGA_PSSR_DPLX) ? DUPLEX_FULL : DUPLEX_HALF; + return 1; + +wrong_speed: + dev_err(&pdev->dev, "invalid PHY speed/duplex: 0x%x\n", giga); + return -EINVAL; +} + +int alx_clear_phy_intr(struct alx_hw *hw) +{ + u16 isr; + + /* clear interrupt status by reading it */ + return alx_read_phy_reg(hw, ALX_MII_ISR, &isr); +} + +int alx_config_wol(struct alx_hw *hw) +{ + u32 wol = 0; + int err = 0; + + /* turn on magic packet event */ + if (hw->sleep_ctrl & ALX_SLEEP_WOL_MAGIC) + wol |= ALX_WOL0_MAGIC_EN | ALX_WOL0_PME_MAGIC_EN; + + /* turn on link up event */ + if (hw->sleep_ctrl & ALX_SLEEP_WOL_PHY) { + wol |= ALX_WOL0_LINK_EN | ALX_WOL0_PME_LINK; + /* only link up can wake up */ + err = alx_write_phy_reg(hw, ALX_MII_IER, ALX_IER_LINK_UP); + } + alx_write_mem32(hw, ALX_WOL0, wol); + + return err; +} + +void alx_disable_rss(struct alx_hw *hw) +{ + u32 ctrl = alx_read_mem32(hw, ALX_RXQ0); + + ctrl &= ~ALX_RXQ0_RSS_HASH_EN; + alx_write_mem32(hw, ALX_RXQ0, ctrl); +} + +void alx_configure_basic(struct alx_hw *hw) +{ + u32 val, raw_mtu, max_payload; + u16 val16; + u8 chip_rev = alx_hw_revision(hw); + + alx_set_macaddr(hw, hw->mac_addr); + + alx_write_mem32(hw, ALX_CLK_GATE, ALX_CLK_GATE_ALL); + + /* idle timeout to switch clk_125M */ + if (chip_rev >= ALX_REV_B0) + alx_write_mem32(hw, ALX_IDLE_DECISN_TIMER, + ALX_IDLE_DECISN_TIMER_DEF); + + alx_write_mem32(hw, ALX_SMB_TIMER, hw->smb_timer * 500UL); + + val = alx_read_mem32(hw, ALX_MASTER); + val |= ALX_MASTER_IRQMOD2_EN | + ALX_MASTER_IRQMOD1_EN | + ALX_MASTER_SYSALVTIMER_EN; + alx_write_mem32(hw, ALX_MASTER, val); + alx_write_mem32(hw, ALX_IRQ_MODU_TIMER, + (hw->imt >> 1) << ALX_IRQ_MODU_TIMER1_SHIFT); + /* intr re-trig timeout */ + alx_write_mem32(hw, ALX_INT_RETRIG, ALX_INT_RETRIG_TO); + /* tpd threshold to trig int */ + alx_write_mem32(hw, ALX_TINT_TPD_THRSHLD, hw->ith_tpd); + alx_write_mem32(hw, ALX_TINT_TIMER, hw->imt); + + raw_mtu = hw->mtu + ETH_HLEN; + alx_write_mem32(hw, ALX_MTU, raw_mtu + 8); + if (raw_mtu > ALX_MTU_JUMBO_TH) + hw->rx_ctrl &= ~ALX_MAC_CTRL_FAST_PAUSE; + + if ((raw_mtu + 8) < ALX_TXQ1_JUMBO_TSO_TH) + val = (raw_mtu + 8 + 7) >> 3; + else + val = ALX_TXQ1_JUMBO_TSO_TH >> 3; + alx_write_mem32(hw, ALX_TXQ1, val | ALX_TXQ1_ERRLGPKT_DROP_EN); + + max_payload = pcie_get_readrq(hw->pdev) >> 8; + /* + * if BIOS had changed the default dma read max length, + * restore it to default value + */ + if (max_payload < ALX_DEV_CTRL_MAXRRS_MIN) + pcie_set_readrq(hw->pdev, 128 << ALX_DEV_CTRL_MAXRRS_MIN); + + val = ALX_TXQ_TPD_BURSTPREF_DEF << ALX_TXQ0_TPD_BURSTPREF_SHIFT | + ALX_TXQ0_MODE_ENHANCE | ALX_TXQ0_LSO_8023_EN | + ALX_TXQ0_SUPT_IPOPT | + ALX_TXQ_TXF_BURST_PREF_DEF << ALX_TXQ0_TXF_BURST_PREF_SHIFT; + alx_write_mem32(hw, ALX_TXQ0, val); + val = ALX_TXQ_TPD_BURSTPREF_DEF << ALX_HQTPD_Q1_NUMPREF_SHIFT | + ALX_TXQ_TPD_BURSTPREF_DEF << ALX_HQTPD_Q2_NUMPREF_SHIFT | + ALX_TXQ_TPD_BURSTPREF_DEF << ALX_HQTPD_Q3_NUMPREF_SHIFT | + ALX_HQTPD_BURST_EN; + alx_write_mem32(hw, ALX_HQTPD, val); + + /* rxq, flow control */ + val = alx_read_mem32(hw, ALX_SRAM5); + val = ALX_GET_FIELD(val, ALX_SRAM_RXF_LEN) << 3; + if (val > ALX_SRAM_RXF_LEN_8K) { + val16 = ALX_MTU_STD_ALGN >> 3; + val = (val - ALX_RXQ2_RXF_FLOW_CTRL_RSVD) >> 3; + } else { + val16 = ALX_MTU_STD_ALGN >> 3; + val = (val - ALX_MTU_STD_ALGN) >> 3; + } + alx_write_mem32(hw, ALX_RXQ2, + val16 << ALX_RXQ2_RXF_XOFF_THRESH_SHIFT | + val << ALX_RXQ2_RXF_XON_THRESH_SHIFT); + val = ALX_RXQ0_NUM_RFD_PREF_DEF << ALX_RXQ0_NUM_RFD_PREF_SHIFT | + ALX_RXQ0_RSS_MODE_DIS << ALX_RXQ0_RSS_MODE_SHIFT | + ALX_RXQ0_IDT_TBL_SIZE_DEF << ALX_RXQ0_IDT_TBL_SIZE_SHIFT | + ALX_RXQ0_RSS_HSTYP_ALL | ALX_RXQ0_RSS_HASH_EN | + ALX_RXQ0_IPV6_PARSE_EN; + + if (alx_hw_giga(hw)) + ALX_SET_FIELD(val, ALX_RXQ0_ASPM_THRESH, + ALX_RXQ0_ASPM_THRESH_100M); + + alx_write_mem32(hw, ALX_RXQ0, val); + + val = alx_read_mem32(hw, ALX_DMA); + val = ALX_DMA_RORDER_MODE_OUT << ALX_DMA_RORDER_MODE_SHIFT | + ALX_DMA_RREQ_PRI_DATA | + max_payload << ALX_DMA_RREQ_BLEN_SHIFT | + ALX_DMA_WDLY_CNT_DEF << ALX_DMA_WDLY_CNT_SHIFT | + ALX_DMA_RDLY_CNT_DEF << ALX_DMA_RDLY_CNT_SHIFT | + (hw->dma_chnl - 1) << ALX_DMA_RCHNL_SEL_SHIFT; + alx_write_mem32(hw, ALX_DMA, val); + + /* default multi-tx-q weights */ + val = ALX_WRR_PRI_RESTRICT_NONE << ALX_WRR_PRI_SHIFT | + 4 << ALX_WRR_PRI0_SHIFT | + 4 << ALX_WRR_PRI1_SHIFT | + 4 << ALX_WRR_PRI2_SHIFT | + 4 << ALX_WRR_PRI3_SHIFT; + alx_write_mem32(hw, ALX_WRR, val); +} + +static inline u32 alx_speed_to_ethadv(int speed) +{ + switch (speed) { + case SPEED_1000 + DUPLEX_FULL: + return ADVERTISED_1000baseT_Full; + case SPEED_100 + DUPLEX_FULL: + return ADVERTISED_100baseT_Full; + case SPEED_100 + DUPLEX_HALF: + return ADVERTISED_10baseT_Half; + case SPEED_10 + DUPLEX_FULL: + return ADVERTISED_10baseT_Full; + case SPEED_10 + DUPLEX_HALF: + return ADVERTISED_10baseT_Half; + default: + return 0; + } +} + +int alx_select_powersaving_speed(struct alx_hw *hw, int *speed) +{ + int i, err, spd; + u16 lpa; + + err = alx_get_phy_link(hw, &spd); + if (err < 0) + return err; + + if (spd == SPEED_UNKNOWN) + return 0; + + err = alx_read_phy_reg(hw, MII_LPA, &lpa); + if (err) + return err; + + if (!(lpa & LPA_LPACK)) { + *speed = spd; + return 0; + } + + if (lpa & LPA_10FULL) + *speed = SPEED_10 + DUPLEX_FULL; + else if (lpa & LPA_10HALF) + *speed = SPEED_10 + DUPLEX_HALF; + else if (lpa & LPA_100FULL) + *speed = SPEED_100 + DUPLEX_FULL; + else + *speed = SPEED_100 + DUPLEX_HALF; + + if (*speed != spd) { + err = alx_write_phy_reg(hw, ALX_MII_IER, 0); + if (err) + return err; + err = alx_setup_speed_duplex(hw, + alx_speed_to_ethadv(*speed) | + ADVERTISED_Autoneg, + ALX_FC_ANEG | ALX_FC_RX | + ALX_FC_TX); + if (err) + return err; + + /* wait for linkup */ + for (i = 0; i < ALX_MAX_SETUP_LNK_CYCLE; i++) { + int speed2; + + msleep(100); + + err = alx_get_phy_link(hw, &speed2); + if (err < 0) + return err; + if (speed2 != SPEED_UNKNOWN) + break; + } + if (i == ALX_MAX_SETUP_LNK_CYCLE) + return -ETIMEDOUT; + } + + return 0; +} + +bool alx_get_phy_info(struct alx_hw *hw) +{ + u16 devs1, devs2; + + if (alx_read_phy_reg(hw, MII_PHYSID1, &hw->phy_id[0]) || + alx_read_phy_reg(hw, MII_PHYSID2, &hw->phy_id[1])) + return false; + + /* since we haven't PMA/PMD status2 register, we can't + * use mdio45_probe function for prtad and mmds. + * use fixed MMD3 to get mmds. + */ + if (alx_read_phy_ext(hw, 3, MDIO_DEVS1, &devs1) || + alx_read_phy_ext(hw, 3, MDIO_DEVS2, &devs2)) + return false; + hw->mdio.mmds = devs1 | devs2 << 16; + + return true; +} diff --git a/drivers/net/ethernet/atheros/alx/hw.h b/drivers/net/ethernet/atheros/alx/hw.h new file mode 100644 index 0000000..65e723d --- /dev/null +++ b/drivers/net/ethernet/atheros/alx/hw.h @@ -0,0 +1,499 @@ +/* + * Copyright (c) 2013 Johannes Berg + * + * This file is free software: you may copy, redistribute and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, either version 2 of the License, or (at your + * option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2012 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef ALX_HW_H_ +#define ALX_HW_H_ +#include +#include +#include +#include "reg.h" + +/* Transmit Packet Descriptor, contains 4 32-bit words. + * + * 31 16 0 + * +----------------+----------------+ + * | vlan-tag | buf length | + * +----------------+----------------+ + * | Word 1 | + * +----------------+----------------+ + * | Word 2: buf addr lo | + * +----------------+----------------+ + * | Word 3: buf addr hi | + * +----------------+----------------+ + * + * Word 2 and 3 combine to form a 64-bit buffer address + * + * Word 1 has three forms, depending on the state of bit 8/12/13: + * if bit8 =='1', the definition is just for custom checksum offload. + * if bit8 == '0' && bit12 == '1' && bit13 == '1', the *FIRST* descriptor + * for the skb is special for LSO V2, Word 2 become total skb length , + * Word 3 is meaningless. + * other condition, the definition is for general skb or ip/tcp/udp + * checksum or LSO(TSO) offload. + * + * Here is the depiction: + * + * 0-+ 0-+ + * 1 | 1 | + * 2 | 2 | + * 3 | Payload offset 3 | L4 header offset + * 4 | (7:0) 4 | (7:0) + * 5 | 5 | + * 6 | 6 | + * 7-+ 7-+ + * 8 Custom csum enable = 1 8 Custom csum enable = 0 + * 9 General IPv4 checksum 9 General IPv4 checksum + * 10 General TCP checksum 10 General TCP checksum + * 11 General UDP checksum 11 General UDP checksum + * 12 Large Send Segment enable 12 Large Send Segment enable + * 13 Large Send Segment type 13 Large Send Segment type + * 14 VLAN tagged 14 VLAN tagged + * 15 Insert VLAN tag 15 Insert VLAN tag + * 16 IPv4 packet 16 IPv4 packet + * 17 Ethernet frame type 17 Ethernet frame type + * 18-+ 18-+ + * 19 | 19 | + * 20 | 20 | + * 21 | Custom csum offset 21 | + * 22 | (25:18) 22 | + * 23 | 23 | MSS (30:18) + * 24 | 24 | + * 25-+ 25 | + * 26-+ 26 | + * 27 | 27 | + * 28 | Reserved 28 | + * 29 | 29 | + * 30-+ 30-+ + * 31 End of packet 31 End of packet + */ +struct alx_txd { + __le16 len; + __le16 vlan_tag; + __le32 word1; + union { + __le64 addr; + struct { + __le32 pkt_len; + __le32 resvd; + } l; + } adrl; +} __packed; + +/* tpd word 1 */ +#define TPD_CXSUMSTART_MASK 0x00FF +#define TPD_CXSUMSTART_SHIFT 0 +#define TPD_L4HDROFFSET_MASK 0x00FF +#define TPD_L4HDROFFSET_SHIFT 0 +#define TPD_CXSUM_EN_MASK 0x0001 +#define TPD_CXSUM_EN_SHIFT 8 +#define TPD_IP_XSUM_MASK 0x0001 +#define TPD_IP_XSUM_SHIFT 9 +#define TPD_TCP_XSUM_MASK 0x0001 +#define TPD_TCP_XSUM_SHIFT 10 +#define TPD_UDP_XSUM_MASK 0x0001 +#define TPD_UDP_XSUM_SHIFT 11 +#define TPD_LSO_EN_MASK 0x0001 +#define TPD_LSO_EN_SHIFT 12 +#define TPD_LSO_V2_MASK 0x0001 +#define TPD_LSO_V2_SHIFT 13 +#define TPD_VLTAGGED_MASK 0x0001 +#define TPD_VLTAGGED_SHIFT 14 +#define TPD_INS_VLTAG_MASK 0x0001 +#define TPD_INS_VLTAG_SHIFT 15 +#define TPD_IPV4_MASK 0x0001 +#define TPD_IPV4_SHIFT 16 +#define TPD_ETHTYPE_MASK 0x0001 +#define TPD_ETHTYPE_SHIFT 17 +#define TPD_CXSUMOFFSET_MASK 0x00FF +#define TPD_CXSUMOFFSET_SHIFT 18 +#define TPD_MSS_MASK 0x1FFF +#define TPD_MSS_SHIFT 18 +#define TPD_EOP_MASK 0x0001 +#define TPD_EOP_SHIFT 31 + +#define DESC_GET(_x, _name) ((_x) >> _name##SHIFT & _name##MASK) + +/* Receive Free Descriptor */ +struct alx_rfd { + __le64 addr; /* data buffer address, length is + * declared in register --- every + * buffer has the same size + */ +} __packed; + +/* Receive Return Descriptor, contains 4 32-bit words. + * + * 31 16 0 + * +----------------+----------------+ + * | Word 0 | + * +----------------+----------------+ + * | Word 1: RSS Hash value | + * +----------------+----------------+ + * | Word 2 | + * +----------------+----------------+ + * | Word 3 | + * +----------------+----------------+ + * + * Word 0 depiction & Word 2 depiction: + * + * 0--+ 0--+ + * 1 | 1 | + * 2 | 2 | + * 3 | 3 | + * 4 | 4 | + * 5 | 5 | + * 6 | 6 | + * 7 | IP payload checksum 7 | VLAN tag + * 8 | (15:0) 8 | (15:0) + * 9 | 9 | + * 10 | 10 | + * 11 | 11 | + * 12 | 12 | + * 13 | 13 | + * 14 | 14 | + * 15-+ 15-+ + * 16-+ 16-+ + * 17 | Number of RFDs 17 | + * 18 | (19:16) 18 | + * 19-+ 19 | Protocol ID + * 20-+ 20 | (23:16) + * 21 | 21 | + * 22 | 22 | + * 23 | 23-+ + * 24 | 24 | Reserved + * 25 | Start index of RFD-ring 25-+ + * 26 | (31:20) 26 | RSS Q-num (27:25) + * 27 | 27-+ + * 28 | 28-+ + * 29 | 29 | RSS Hash algorithm + * 30 | 30 | (31:28) + * 31-+ 31-+ + * + * Word 3 depiction: + * + * 0--+ + * 1 | + * 2 | + * 3 | + * 4 | + * 5 | + * 6 | + * 7 | Packet length (include FCS) + * 8 | (13:0) + * 9 | + * 10 | + * 11 | + * 12 | + * 13-+ + * 14 L4 Header checksum error + * 15 IPv4 checksum error + * 16 VLAN tagged + * 17-+ + * 18 | Protocol ID (19:17) + * 19-+ + * 20 Receive error summary + * 21 FCS(CRC) error + * 22 Frame alignment error + * 23 Truncated packet + * 24 Runt packet + * 25 Incomplete packet due to insufficient rx-desc + * 26 Broadcast packet + * 27 Multicast packet + * 28 Ethernet type (EII or 802.3) + * 29 FIFO overflow + * 30 Length error (for 802.3, length field mismatch with actual len) + * 31 Updated, indicate to driver that this RRD is refreshed. + */ +struct alx_rrd { + __le32 word0; + __le32 rss_hash; + __le32 word2; + __le32 word3; +} __packed; + +/* rrd word 0 */ +#define RRD_XSUM_MASK 0xFFFF +#define RRD_XSUM_SHIFT 0 +#define RRD_NOR_MASK 0x000F +#define RRD_NOR_SHIFT 16 +#define RRD_SI_MASK 0x0FFF +#define RRD_SI_SHIFT 20 + +/* rrd word 2 */ +#define RRD_VLTAG_MASK 0xFFFF +#define RRD_VLTAG_SHIFT 0 +#define RRD_PID_MASK 0x00FF +#define RRD_PID_SHIFT 16 +/* non-ip packet */ +#define RRD_PID_NONIP 0 +/* ipv4(only) */ +#define RRD_PID_IPV4 1 +/* tcp/ipv6 */ +#define RRD_PID_IPV6TCP 2 +/* tcp/ipv4 */ +#define RRD_PID_IPV4TCP 3 +/* udp/ipv6 */ +#define RRD_PID_IPV6UDP 4 +/* udp/ipv4 */ +#define RRD_PID_IPV4UDP 5 +/* ipv6(only) */ +#define RRD_PID_IPV6 6 +/* LLDP packet */ +#define RRD_PID_LLDP 7 +/* 1588 packet */ +#define RRD_PID_1588 8 +#define RRD_RSSQ_MASK 0x0007 +#define RRD_RSSQ_SHIFT 25 +#define RRD_RSSALG_MASK 0x000F +#define RRD_RSSALG_SHIFT 28 +#define RRD_RSSALG_TCPV6 0x1 +#define RRD_RSSALG_IPV6 0x2 +#define RRD_RSSALG_TCPV4 0x4 +#define RRD_RSSALG_IPV4 0x8 + +/* rrd word 3 */ +#define RRD_PKTLEN_MASK 0x3FFF +#define RRD_PKTLEN_SHIFT 0 +#define RRD_ERR_L4_MASK 0x0001 +#define RRD_ERR_L4_SHIFT 14 +#define RRD_ERR_IPV4_MASK 0x0001 +#define RRD_ERR_IPV4_SHIFT 15 +#define RRD_VLTAGGED_MASK 0x0001 +#define RRD_VLTAGGED_SHIFT 16 +#define RRD_OLD_PID_MASK 0x0007 +#define RRD_OLD_PID_SHIFT 17 +#define RRD_ERR_RES_MASK 0x0001 +#define RRD_ERR_RES_SHIFT 20 +#define RRD_ERR_FCS_MASK 0x0001 +#define RRD_ERR_FCS_SHIFT 21 +#define RRD_ERR_FAE_MASK 0x0001 +#define RRD_ERR_FAE_SHIFT 22 +#define RRD_ERR_TRUNC_MASK 0x0001 +#define RRD_ERR_TRUNC_SHIFT 23 +#define RRD_ERR_RUNT_MASK 0x0001 +#define RRD_ERR_RUNT_SHIFT 24 +#define RRD_ERR_ICMP_MASK 0x0001 +#define RRD_ERR_ICMP_SHIFT 25 +#define RRD_BCAST_MASK 0x0001 +#define RRD_BCAST_SHIFT 26 +#define RRD_MCAST_MASK 0x0001 +#define RRD_MCAST_SHIFT 27 +#define RRD_ETHTYPE_MASK 0x0001 +#define RRD_ETHTYPE_SHIFT 28 +#define RRD_ERR_FIFOV_MASK 0x0001 +#define RRD_ERR_FIFOV_SHIFT 29 +#define RRD_ERR_LEN_MASK 0x0001 +#define RRD_ERR_LEN_SHIFT 30 +#define RRD_UPDATED_MASK 0x0001 +#define RRD_UPDATED_SHIFT 31 + + +#define ALX_MAX_SETUP_LNK_CYCLE 50 + +/* for FlowControl */ +#define ALX_FC_RX 0x01 +#define ALX_FC_TX 0x02 +#define ALX_FC_ANEG 0x04 + +/* for sleep control */ +#define ALX_SLEEP_WOL_PHY 0x00000001 +#define ALX_SLEEP_WOL_MAGIC 0x00000002 +#define ALX_SLEEP_CIFS 0x00000004 +#define ALX_SLEEP_ACTIVE (ALX_SLEEP_WOL_PHY | \ + ALX_SLEEP_WOL_MAGIC | \ + ALX_SLEEP_CIFS) + +/* for RSS hash type */ +#define ALX_RSS_HASH_TYPE_IPV4 0x1 +#define ALX_RSS_HASH_TYPE_IPV4_TCP 0x2 +#define ALX_RSS_HASH_TYPE_IPV6 0x4 +#define ALX_RSS_HASH_TYPE_IPV6_TCP 0x8 +#define ALX_RSS_HASH_TYPE_ALL (ALX_RSS_HASH_TYPE_IPV4 | \ + ALX_RSS_HASH_TYPE_IPV4_TCP | \ + ALX_RSS_HASH_TYPE_IPV6 | \ + ALX_RSS_HASH_TYPE_IPV6_TCP) +#define ALX_DEF_RXBUF_SIZE 1536 +#define ALX_MAX_JUMBO_PKT_SIZE (9*1024) +#define ALX_MAX_TSO_PKT_SIZE (7*1024) +#define ALX_MAX_FRAME_SIZE ALX_MAX_JUMBO_PKT_SIZE +#define ALX_MIN_FRAME_SIZE 68 +#define ALX_RAW_MTU(_mtu) (_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN) + +#define ALX_MAX_RX_QUEUES 8 +#define ALX_MAX_TX_QUEUES 4 +#define ALX_MAX_HANDLED_INTRS 5 + +#define ALX_ISR_MISC (ALX_ISR_PCIE_LNKDOWN | \ + ALX_ISR_DMAW | \ + ALX_ISR_DMAR | \ + ALX_ISR_SMB | \ + ALX_ISR_MANU | \ + ALX_ISR_TIMER) + +#define ALX_ISR_FATAL (ALX_ISR_PCIE_LNKDOWN | \ + ALX_ISR_DMAW | ALX_ISR_DMAR) + +#define ALX_ISR_ALERT (ALX_ISR_RXF_OV | \ + ALX_ISR_TXF_UR | \ + ALX_ISR_RFD_UR) + +#define ALX_ISR_ALL_QUEUES (ALX_ISR_TX_Q0 | \ + ALX_ISR_TX_Q1 | \ + ALX_ISR_TX_Q2 | \ + ALX_ISR_TX_Q3 | \ + ALX_ISR_RX_Q0 | \ + ALX_ISR_RX_Q1 | \ + ALX_ISR_RX_Q2 | \ + ALX_ISR_RX_Q3 | \ + ALX_ISR_RX_Q4 | \ + ALX_ISR_RX_Q5 | \ + ALX_ISR_RX_Q6 | \ + ALX_ISR_RX_Q7) + +/* maximum interrupt vectors for msix */ +#define ALX_MAX_MSIX_INTRS 16 + +#define ALX_GET_FIELD(_data, _field) \ + (((_data) >> _field ## _SHIFT) & _field ## _MASK) + +#define ALX_SET_FIELD(_data, _field, _value) do { \ + (_data) &= ~(_field ## _MASK << _field ## _SHIFT); \ + (_data) |= ((_value) & _field ## _MASK) << _field ## _SHIFT;\ + } while (0) + +struct alx_hw { + struct pci_dev *pdev; + u8 __iomem *hw_addr; + + /* current & permanent mac addr */ + u8 mac_addr[ETH_ALEN]; + u8 perm_addr[ETH_ALEN]; + + u16 mtu; + u16 imt; + u8 dma_chnl; + u8 max_dma_chnl; + /* tpd threshold to trig INT */ + u32 ith_tpd; + u32 rx_ctrl; + u32 mc_hash[2]; + + u32 smb_timer; + /* SPEED_* + DUPLEX_*, SPEED_UNKNOWN if link is down */ + int link_speed; + + /* auto-neg advertisement or force mode config */ + u32 adv_cfg; + u8 flowctrl; + + u32 sleep_ctrl; + + spinlock_t mdio_lock; + struct mdio_if_info mdio; + u16 phy_id[2]; + + /* PHY link patch flag */ + bool lnk_patch; +}; + +static inline int alx_hw_revision(struct alx_hw *hw) +{ + return hw->pdev->revision >> ALX_PCI_REVID_SHIFT; +} + +static inline bool alx_hw_with_cr(struct alx_hw *hw) +{ + return hw->pdev->revision & 1; +} + +static inline bool alx_hw_giga(struct alx_hw *hw) +{ + return hw->pdev->device & 1; +} + +static inline void alx_write_mem8(struct alx_hw *hw, u32 reg, u8 val) +{ + writeb(val, hw->hw_addr + reg); +} + +static inline void alx_write_mem16(struct alx_hw *hw, u32 reg, u16 val) +{ + writew(val, hw->hw_addr + reg); +} + +static inline u16 alx_read_mem16(struct alx_hw *hw, u32 reg) +{ + return readw(hw->hw_addr + reg); +} + +static inline void alx_write_mem32(struct alx_hw *hw, u32 reg, u32 val) +{ + writel(val, hw->hw_addr + reg); +} + +static inline u32 alx_read_mem32(struct alx_hw *hw, u32 reg) +{ + return readl(hw->hw_addr + reg); +} + +static inline void alx_post_write(struct alx_hw *hw) +{ + readl(hw->hw_addr); +} + +int alx_get_perm_macaddr(struct alx_hw *hw, u8 *addr); +void alx_reset_phy(struct alx_hw *hw); +void alx_reset_pcie(struct alx_hw *hw); +void alx_enable_aspm(struct alx_hw *hw, bool l0s_en, bool l1_en); +int alx_setup_speed_duplex(struct alx_hw *hw, u32 ethadv, u8 flowctrl); +void alx_post_phy_link(struct alx_hw *hw); +int alx_pre_suspend(struct alx_hw *hw, int speed); +int alx_read_phy_reg(struct alx_hw *hw, u16 reg, u16 *phy_data); +int alx_write_phy_reg(struct alx_hw *hw, u16 reg, u16 phy_data); +int alx_read_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 *pdata); +int alx_write_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 data); +int alx_get_phy_link(struct alx_hw *hw, int *speed); +int alx_clear_phy_intr(struct alx_hw *hw); +int alx_config_wol(struct alx_hw *hw); +void alx_cfg_mac_flowcontrol(struct alx_hw *hw, u8 fc); +void alx_start_mac(struct alx_hw *hw); +int alx_reset_mac(struct alx_hw *hw); +void alx_set_macaddr(struct alx_hw *hw, const u8 *addr); +bool alx_phy_configured(struct alx_hw *hw); +void alx_configure_basic(struct alx_hw *hw); +void alx_disable_rss(struct alx_hw *hw); +int alx_select_powersaving_speed(struct alx_hw *hw, int *speed); +bool alx_get_phy_info(struct alx_hw *hw); + +#endif diff --git a/drivers/net/ethernet/atheros/alx/main.c b/drivers/net/ethernet/atheros/alx/main.c new file mode 100644 index 0000000..418de8b --- /dev/null +++ b/drivers/net/ethernet/atheros/alx/main.c @@ -0,0 +1,1625 @@ +/* + * Copyright (c) 2013 Johannes Berg + * + * This file is free software: you may copy, redistribute and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, either version 2 of the License, or (at your + * option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2012 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "alx.h" +#include "hw.h" +#include "reg.h" + +const char alx_drv_name[] = "alx"; + + +static void alx_free_txbuf(struct alx_priv *alx, int entry) +{ + struct alx_buffer *txb = &alx->txq.bufs[entry]; + + if (dma_unmap_len(txb, size)) { + dma_unmap_single(&alx->hw.pdev->dev, + dma_unmap_addr(txb, dma), + dma_unmap_len(txb, size), + DMA_TO_DEVICE); + dma_unmap_len_set(txb, size, 0); + } + + if (txb->skb) { + dev_kfree_skb_any(txb->skb); + txb->skb = NULL; + } +} + +static int alx_refill_rx_ring(struct alx_priv *alx, gfp_t gfp) +{ + struct alx_rx_queue *rxq = &alx->rxq; + struct sk_buff *skb; + struct alx_buffer *cur_buf; + dma_addr_t dma; + u16 cur, next, count = 0; + + next = cur = rxq->write_idx; + if (++next == alx->rx_ringsz) + next = 0; + cur_buf = &rxq->bufs[cur]; + + while (!cur_buf->skb && next != rxq->read_idx) { + struct alx_rfd *rfd = &rxq->rfd[cur]; + + skb = __netdev_alloc_skb(alx->dev, alx->rxbuf_size, gfp); + if (!skb) + break; + dma = dma_map_single(&alx->hw.pdev->dev, + skb->data, alx->rxbuf_size, + DMA_FROM_DEVICE); + if (dma_mapping_error(&alx->hw.pdev->dev, dma)) { + dev_kfree_skb(skb); + break; + } + + /* Unfortunately, RX descriptor buffers must be 4-byte + * aligned, so we can't use IP alignment. + */ + if (WARN_ON(dma & 3)) { + dev_kfree_skb(skb); + break; + } + + cur_buf->skb = skb; + dma_unmap_len_set(cur_buf, size, alx->rxbuf_size); + dma_unmap_addr_set(cur_buf, dma, dma); + rfd->addr = cpu_to_le64(dma); + + cur = next; + if (++next == alx->rx_ringsz) + next = 0; + cur_buf = &rxq->bufs[cur]; + count++; + } + + if (count) { + /* flush all updates before updating hardware */ + wmb(); + rxq->write_idx = cur; + alx_write_mem16(&alx->hw, ALX_RFD_PIDX, cur); + } + + return count; +} + +static inline int alx_tpd_avail(struct alx_priv *alx) +{ + struct alx_tx_queue *txq = &alx->txq; + + if (txq->write_idx >= txq->read_idx) + return alx->tx_ringsz + txq->read_idx - txq->write_idx - 1; + return txq->read_idx - txq->write_idx - 1; +} + +static bool alx_clean_tx_irq(struct alx_priv *alx) +{ + struct alx_tx_queue *txq = &alx->txq; + u16 hw_read_idx, sw_read_idx; + unsigned int total_bytes = 0, total_packets = 0; + int budget = ALX_DEFAULT_TX_WORK; + + sw_read_idx = txq->read_idx; + hw_read_idx = alx_read_mem16(&alx->hw, ALX_TPD_PRI0_CIDX); + + if (sw_read_idx != hw_read_idx) { + while (sw_read_idx != hw_read_idx && budget > 0) { + struct sk_buff *skb; + + skb = txq->bufs[sw_read_idx].skb; + if (skb) { + total_bytes += skb->len; + total_packets++; + budget--; + } + + alx_free_txbuf(alx, sw_read_idx); + + if (++sw_read_idx == alx->tx_ringsz) + sw_read_idx = 0; + } + txq->read_idx = sw_read_idx; + + netdev_completed_queue(alx->dev, total_packets, total_bytes); + } + + if (netif_queue_stopped(alx->dev) && netif_carrier_ok(alx->dev) && + alx_tpd_avail(alx) > alx->tx_ringsz/4) + netif_wake_queue(alx->dev); + + return sw_read_idx == hw_read_idx; +} + +static void alx_schedule_link_check(struct alx_priv *alx) +{ + schedule_work(&alx->link_check_wk); +} + +static void alx_schedule_reset(struct alx_priv *alx) +{ + schedule_work(&alx->reset_wk); +} + +static bool alx_clean_rx_irq(struct alx_priv *alx, int budget) +{ + struct alx_rx_queue *rxq = &alx->rxq; + struct alx_rrd *rrd; + struct alx_buffer *rxb; + struct sk_buff *skb; + u16 length, rfd_cleaned = 0; + + while (budget > 0) { + rrd = &rxq->rrd[rxq->rrd_read_idx]; + if (!(rrd->word3 & cpu_to_le32(1 << RRD_UPDATED_SHIFT))) + break; + rrd->word3 &= ~cpu_to_le32(1 << RRD_UPDATED_SHIFT); + + if (ALX_GET_FIELD(le32_to_cpu(rrd->word0), + RRD_SI) != rxq->read_idx || + ALX_GET_FIELD(le32_to_cpu(rrd->word0), + RRD_NOR) != 1) { + alx_schedule_reset(alx); + return 0; + } + + rxb = &rxq->bufs[rxq->read_idx]; + dma_unmap_single(&alx->hw.pdev->dev, + dma_unmap_addr(rxb, dma), + dma_unmap_len(rxb, size), + DMA_FROM_DEVICE); + dma_unmap_len_set(rxb, size, 0); + skb = rxb->skb; + rxb->skb = NULL; + + if (rrd->word3 & cpu_to_le32(1 << RRD_ERR_RES_SHIFT) || + rrd->word3 & cpu_to_le32(1 << RRD_ERR_LEN_SHIFT)) { + rrd->word3 = 0; + dev_kfree_skb_any(skb); + goto next_pkt; + } + + length = ALX_GET_FIELD(le32_to_cpu(rrd->word3), + RRD_PKTLEN) - ETH_FCS_LEN; + skb_put(skb, length); + skb->protocol = eth_type_trans(skb, alx->dev); + + skb_checksum_none_assert(skb); + if (alx->dev->features & NETIF_F_RXCSUM && + !(rrd->word3 & (cpu_to_le32(1 << RRD_ERR_L4_SHIFT) | + cpu_to_le32(1 << RRD_ERR_IPV4_SHIFT)))) { + switch (ALX_GET_FIELD(le32_to_cpu(rrd->word2), + RRD_PID)) { + case RRD_PID_IPV6UDP: + case RRD_PID_IPV4UDP: + case RRD_PID_IPV4TCP: + case RRD_PID_IPV6TCP: + skb->ip_summed = CHECKSUM_UNNECESSARY; + break; + } + } + + napi_gro_receive(&alx->napi, skb); + budget--; + +next_pkt: + if (++rxq->read_idx == alx->rx_ringsz) + rxq->read_idx = 0; + if (++rxq->rrd_read_idx == alx->rx_ringsz) + rxq->rrd_read_idx = 0; + + if (++rfd_cleaned > ALX_RX_ALLOC_THRESH) + rfd_cleaned -= alx_refill_rx_ring(alx, GFP_ATOMIC); + } + + if (rfd_cleaned) + alx_refill_rx_ring(alx, GFP_ATOMIC); + + return budget > 0; +} + +static int alx_poll(struct napi_struct *napi, int budget) +{ + struct alx_priv *alx = container_of(napi, struct alx_priv, napi); + struct alx_hw *hw = &alx->hw; + bool complete = true; + unsigned long flags; + + complete = alx_clean_tx_irq(alx) && + alx_clean_rx_irq(alx, budget); + + if (!complete) + return 1; + + napi_complete(&alx->napi); + + /* enable interrupt */ + spin_lock_irqsave(&alx->irq_lock, flags); + alx->int_mask |= ALX_ISR_TX_Q0 | ALX_ISR_RX_Q0; + alx_write_mem32(hw, ALX_IMR, alx->int_mask); + spin_unlock_irqrestore(&alx->irq_lock, flags); + + alx_post_write(hw); + + return 0; +} + +static irqreturn_t alx_intr_handle(struct alx_priv *alx, u32 intr) +{ + struct alx_hw *hw = &alx->hw; + bool write_int_mask = false; + + spin_lock(&alx->irq_lock); + + /* ACK interrupt */ + alx_write_mem32(hw, ALX_ISR, intr | ALX_ISR_DIS); + intr &= alx->int_mask; + + if (intr & ALX_ISR_FATAL) { + netif_warn(alx, hw, alx->dev, + "fatal interrupt 0x%x, resetting\n", intr); + alx_schedule_reset(alx); + goto out; + } + + if (intr & ALX_ISR_ALERT) + netdev_warn(alx->dev, "alert interrupt: 0x%x\n", intr); + + if (intr & ALX_ISR_PHY) { + /* suppress PHY interrupt, because the source + * is from PHY internal. only the internal status + * is cleared, the interrupt status could be cleared. + */ + alx->int_mask &= ~ALX_ISR_PHY; + write_int_mask = true; + alx_schedule_link_check(alx); + } + + if (intr & (ALX_ISR_TX_Q0 | ALX_ISR_RX_Q0)) { + napi_schedule(&alx->napi); + /* mask rx/tx interrupt, enable them when napi complete */ + alx->int_mask &= ~ALX_ISR_ALL_QUEUES; + write_int_mask = true; + } + + if (write_int_mask) + alx_write_mem32(hw, ALX_IMR, alx->int_mask); + + alx_write_mem32(hw, ALX_ISR, 0); + + out: + spin_unlock(&alx->irq_lock); + return IRQ_HANDLED; +} + +static irqreturn_t alx_intr_msi(int irq, void *data) +{ + struct alx_priv *alx = data; + + return alx_intr_handle(alx, alx_read_mem32(&alx->hw, ALX_ISR)); +} + +static irqreturn_t alx_intr_legacy(int irq, void *data) +{ + struct alx_priv *alx = data; + struct alx_hw *hw = &alx->hw; + u32 intr; + + intr = alx_read_mem32(hw, ALX_ISR); + + if (intr & ALX_ISR_DIS || !(intr & alx->int_mask)) + return IRQ_NONE; + + return alx_intr_handle(alx, intr); +} + +static void alx_init_ring_ptrs(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + u32 addr_hi = ((u64)alx->descmem.dma) >> 32; + + alx->rxq.read_idx = 0; + alx->rxq.write_idx = 0; + alx->rxq.rrd_read_idx = 0; + alx_write_mem32(hw, ALX_RX_BASE_ADDR_HI, addr_hi); + alx_write_mem32(hw, ALX_RRD_ADDR_LO, alx->rxq.rrd_dma); + alx_write_mem32(hw, ALX_RRD_RING_SZ, alx->rx_ringsz); + alx_write_mem32(hw, ALX_RFD_ADDR_LO, alx->rxq.rfd_dma); + alx_write_mem32(hw, ALX_RFD_RING_SZ, alx->rx_ringsz); + alx_write_mem32(hw, ALX_RFD_BUF_SZ, alx->rxbuf_size); + + alx->txq.read_idx = 0; + alx->txq.write_idx = 0; + alx_write_mem32(hw, ALX_TX_BASE_ADDR_HI, addr_hi); + alx_write_mem32(hw, ALX_TPD_PRI0_ADDR_LO, alx->txq.tpd_dma); + alx_write_mem32(hw, ALX_TPD_RING_SZ, alx->tx_ringsz); + + /* load these pointers into the chip */ + alx_write_mem32(hw, ALX_SRAM9, ALX_SRAM_LOAD_PTR); +} + +static void alx_free_txring_buf(struct alx_priv *alx) +{ + struct alx_tx_queue *txq = &alx->txq; + int i; + + if (!txq->bufs) + return; + + for (i = 0; i < alx->tx_ringsz; i++) + alx_free_txbuf(alx, i); + + memset(txq->bufs, 0, alx->tx_ringsz * sizeof(struct alx_buffer)); + memset(txq->tpd, 0, alx->tx_ringsz * sizeof(struct alx_txd)); + txq->write_idx = 0; + txq->read_idx = 0; + + netdev_reset_queue(alx->dev); +} + +static void alx_free_rxring_buf(struct alx_priv *alx) +{ + struct alx_rx_queue *rxq = &alx->rxq; + struct alx_buffer *cur_buf; + u16 i; + + if (rxq == NULL) + return; + + for (i = 0; i < alx->rx_ringsz; i++) { + cur_buf = rxq->bufs + i; + if (cur_buf->skb) { + dma_unmap_single(&alx->hw.pdev->dev, + dma_unmap_addr(cur_buf, dma), + dma_unmap_len(cur_buf, size), + DMA_FROM_DEVICE); + dev_kfree_skb(cur_buf->skb); + cur_buf->skb = NULL; + dma_unmap_len_set(cur_buf, size, 0); + dma_unmap_addr_set(cur_buf, dma, 0); + } + } + + rxq->write_idx = 0; + rxq->read_idx = 0; + rxq->rrd_read_idx = 0; +} + +static void alx_free_buffers(struct alx_priv *alx) +{ + alx_free_txring_buf(alx); + alx_free_rxring_buf(alx); +} + +static int alx_reinit_rings(struct alx_priv *alx) +{ + alx_free_buffers(alx); + + alx_init_ring_ptrs(alx); + + if (!alx_refill_rx_ring(alx, GFP_KERNEL)) + return -ENOMEM; + + return 0; +} + +static void alx_add_mc_addr(struct alx_hw *hw, const u8 *addr, u32 *mc_hash) +{ + u32 crc32, bit, reg; + + crc32 = ether_crc(ETH_ALEN, addr); + reg = (crc32 >> 31) & 0x1; + bit = (crc32 >> 26) & 0x1F; + + mc_hash[reg] |= BIT(bit); +} + +static void __alx_set_rx_mode(struct net_device *netdev) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + struct netdev_hw_addr *ha; + u32 mc_hash[2] = {}; + + if (!(netdev->flags & IFF_ALLMULTI)) { + netdev_for_each_mc_addr(ha, netdev) + alx_add_mc_addr(hw, ha->addr, mc_hash); + + alx_write_mem32(hw, ALX_HASH_TBL0, mc_hash[0]); + alx_write_mem32(hw, ALX_HASH_TBL1, mc_hash[1]); + } + + hw->rx_ctrl &= ~(ALX_MAC_CTRL_MULTIALL_EN | ALX_MAC_CTRL_PROMISC_EN); + if (netdev->flags & IFF_PROMISC) + hw->rx_ctrl |= ALX_MAC_CTRL_PROMISC_EN; + if (netdev->flags & IFF_ALLMULTI) + hw->rx_ctrl |= ALX_MAC_CTRL_MULTIALL_EN; + + alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl); +} + +static void alx_set_rx_mode(struct net_device *netdev) +{ + __alx_set_rx_mode(netdev); +} + +static int alx_set_mac_address(struct net_device *netdev, void *data) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + struct sockaddr *addr = data; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + if (netdev->addr_assign_type & NET_ADDR_RANDOM) + netdev->addr_assign_type ^= NET_ADDR_RANDOM; + + memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); + memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); + alx_set_macaddr(hw, hw->mac_addr); + + return 0; +} + +static int alx_alloc_descriptors(struct alx_priv *alx) +{ + alx->txq.bufs = kcalloc(alx->tx_ringsz, + sizeof(struct alx_buffer), + GFP_KERNEL); + if (!alx->txq.bufs) + return -ENOMEM; + + alx->rxq.bufs = kcalloc(alx->rx_ringsz, + sizeof(struct alx_buffer), + GFP_KERNEL); + if (!alx->rxq.bufs) + goto out_free; + + /* physical tx/rx ring descriptors + * + * Allocate them as a single chunk because they must not cross a + * 4G boundary (hardware has a single register for high 32 bits + * of addresses only) + */ + alx->descmem.size = sizeof(struct alx_txd) * alx->tx_ringsz + + sizeof(struct alx_rrd) * alx->rx_ringsz + + sizeof(struct alx_rfd) * alx->rx_ringsz; + alx->descmem.virt = dma_zalloc_coherent(&alx->hw.pdev->dev, + alx->descmem.size, + &alx->descmem.dma, + GFP_KERNEL); + if (!alx->descmem.virt) + goto out_free; + + alx->txq.tpd = (void *)alx->descmem.virt; + alx->txq.tpd_dma = alx->descmem.dma; + + /* alignment requirement for next block */ + BUILD_BUG_ON(sizeof(struct alx_txd) % 8); + + alx->rxq.rrd = + (void *)((u8 *)alx->descmem.virt + + sizeof(struct alx_txd) * alx->tx_ringsz); + alx->rxq.rrd_dma = alx->descmem.dma + + sizeof(struct alx_txd) * alx->tx_ringsz; + + /* alignment requirement for next block */ + BUILD_BUG_ON(sizeof(struct alx_rrd) % 8); + + alx->rxq.rfd = + (void *)((u8 *)alx->descmem.virt + + sizeof(struct alx_txd) * alx->tx_ringsz + + sizeof(struct alx_rrd) * alx->rx_ringsz); + alx->rxq.rfd_dma = alx->descmem.dma + + sizeof(struct alx_txd) * alx->tx_ringsz + + sizeof(struct alx_rrd) * alx->rx_ringsz; + + return 0; +out_free: + kfree(alx->txq.bufs); + kfree(alx->rxq.bufs); + return -ENOMEM; +} + +static int alx_alloc_rings(struct alx_priv *alx) +{ + int err; + + err = alx_alloc_descriptors(alx); + if (err) + return err; + + alx->int_mask &= ~ALX_ISR_ALL_QUEUES; + alx->int_mask |= ALX_ISR_TX_Q0 | ALX_ISR_RX_Q0; + alx->tx_ringsz = alx->tx_ringsz; + + netif_napi_add(alx->dev, &alx->napi, alx_poll, 64); + + alx_reinit_rings(alx); + return 0; +} + +static void alx_free_rings(struct alx_priv *alx) +{ + netif_napi_del(&alx->napi); + alx_free_buffers(alx); + + kfree(alx->txq.bufs); + kfree(alx->rxq.bufs); + + dma_free_coherent(&alx->hw.pdev->dev, + alx->descmem.size, + alx->descmem.virt, + alx->descmem.dma); +} + +static void alx_config_vector_mapping(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + + alx_write_mem32(hw, ALX_MSI_MAP_TBL1, 0); + alx_write_mem32(hw, ALX_MSI_MAP_TBL2, 0); + alx_write_mem32(hw, ALX_MSI_ID_MAP, 0); +} + +static void alx_irq_enable(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + + /* level-1 interrupt switch */ + alx_write_mem32(hw, ALX_ISR, 0); + alx_write_mem32(hw, ALX_IMR, alx->int_mask); + alx_post_write(hw); +} + +static void alx_irq_disable(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + + alx_write_mem32(hw, ALX_ISR, ALX_ISR_DIS); + alx_write_mem32(hw, ALX_IMR, 0); + alx_post_write(hw); + + synchronize_irq(alx->hw.pdev->irq); +} + +static int alx_request_irq(struct alx_priv *alx) +{ + struct pci_dev *pdev = alx->hw.pdev; + struct alx_hw *hw = &alx->hw; + int err; + u32 msi_ctrl; + + msi_ctrl = (hw->imt >> 1) << ALX_MSI_RETRANS_TM_SHIFT; + + if (!pci_enable_msi(alx->hw.pdev)) { + alx->msi = true; + + alx_write_mem32(hw, ALX_MSI_RETRANS_TIMER, + msi_ctrl | ALX_MSI_MASK_SEL_LINE); + err = request_irq(pdev->irq, alx_intr_msi, 0, + alx->dev->name, alx); + if (!err) + goto out; + /* fall back to legacy interrupt */ + pci_disable_msi(alx->hw.pdev); + } + + alx_write_mem32(hw, ALX_MSI_RETRANS_TIMER, 0); + err = request_irq(pdev->irq, alx_intr_legacy, IRQF_SHARED, + alx->dev->name, alx); +out: + if (!err) + alx_config_vector_mapping(alx); + return err; +} + +static void alx_free_irq(struct alx_priv *alx) +{ + struct pci_dev *pdev = alx->hw.pdev; + + free_irq(pdev->irq, alx); + + if (alx->msi) { + pci_disable_msi(alx->hw.pdev); + alx->msi = false; + } +} + +static int alx_identify_hw(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + int rev = alx_hw_revision(hw); + + if (rev > ALX_REV_C0) + return -EINVAL; + + hw->max_dma_chnl = rev >= ALX_REV_B0 ? 4 : 2; + + return 0; +} + +static int alx_init_sw(struct alx_priv *alx) +{ + struct pci_dev *pdev = alx->hw.pdev; + struct alx_hw *hw = &alx->hw; + int err; + + err = alx_identify_hw(alx); + if (err) { + dev_err(&pdev->dev, "unrecognized chip, aborting\n"); + return err; + } + + alx->hw.lnk_patch = + pdev->device == ALX_DEV_ID_AR8161 && + pdev->subsystem_vendor == PCI_VENDOR_ID_ATTANSIC && + pdev->subsystem_device == 0x0091 && + pdev->revision == 0; + + hw->smb_timer = 400; + hw->mtu = alx->dev->mtu; + alx->rxbuf_size = ALIGN(ALX_RAW_MTU(hw->mtu), 8); + alx->tx_ringsz = 256; + alx->rx_ringsz = 512; + hw->sleep_ctrl = ALX_SLEEP_WOL_MAGIC | ALX_SLEEP_WOL_PHY; + hw->imt = 200; + alx->int_mask = ALX_ISR_MISC; + hw->dma_chnl = hw->max_dma_chnl; + hw->ith_tpd = alx->tx_ringsz / 3; + hw->link_speed = SPEED_UNKNOWN; + hw->adv_cfg = ADVERTISED_Autoneg | + ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_1000baseT_Full; + hw->flowctrl = ALX_FC_ANEG | ALX_FC_RX | ALX_FC_TX; + + hw->rx_ctrl = ALX_MAC_CTRL_WOLSPED_SWEN | + ALX_MAC_CTRL_MHASH_ALG_HI5B | + ALX_MAC_CTRL_BRD_EN | + ALX_MAC_CTRL_PCRCE | + ALX_MAC_CTRL_CRCE | + ALX_MAC_CTRL_RXFC_EN | + ALX_MAC_CTRL_TXFC_EN | + 7 << ALX_MAC_CTRL_PRMBLEN_SHIFT; + + return err; +} + + +static netdev_features_t alx_fix_features(struct net_device *netdev, + netdev_features_t features) +{ + if (netdev->mtu > ALX_MAX_TSO_PKT_SIZE) + features &= ~(NETIF_F_TSO | NETIF_F_TSO6); + + return features; +} + +static void alx_netif_stop(struct alx_priv *alx) +{ + alx->dev->trans_start = jiffies; + if (netif_carrier_ok(alx->dev)) { + netif_carrier_off(alx->dev); + netif_tx_disable(alx->dev); + napi_disable(&alx->napi); + } +} + +static void alx_halt(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + + alx_netif_stop(alx); + hw->link_speed = SPEED_UNKNOWN; + + alx_reset_mac(hw); + + /* disable l0s/l1 */ + alx_enable_aspm(hw, false, false); + alx_irq_disable(alx); + alx_free_buffers(alx); +} + +static void alx_configure(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + + alx_configure_basic(hw); + alx_disable_rss(hw); + __alx_set_rx_mode(alx->dev); + + alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl); +} + +static void alx_activate(struct alx_priv *alx) +{ + /* hardware setting lost, restore it */ + alx_reinit_rings(alx); + alx_configure(alx); + + /* clear old interrupts */ + alx_write_mem32(&alx->hw, ALX_ISR, ~(u32)ALX_ISR_DIS); + + alx_irq_enable(alx); + + alx_schedule_link_check(alx); +} + +static void alx_reinit(struct alx_priv *alx) +{ + ASSERT_RTNL(); + + alx_halt(alx); + alx_activate(alx); +} + +static int alx_change_mtu(struct net_device *netdev, int mtu) +{ + struct alx_priv *alx = netdev_priv(netdev); + int max_frame = mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; + + if ((max_frame < ALX_MIN_FRAME_SIZE) || + (max_frame > ALX_MAX_FRAME_SIZE)) + return -EINVAL; + + if (netdev->mtu == mtu) + return 0; + + netdev->mtu = mtu; + alx->hw.mtu = mtu; + alx->rxbuf_size = mtu > ALX_DEF_RXBUF_SIZE ? + ALIGN(max_frame, 8) : ALX_DEF_RXBUF_SIZE; + netdev_update_features(netdev); + if (netif_running(netdev)) + alx_reinit(alx); + return 0; +} + +static void alx_netif_start(struct alx_priv *alx) +{ + netif_tx_wake_all_queues(alx->dev); + napi_enable(&alx->napi); + netif_carrier_on(alx->dev); +} + +static int __alx_open(struct alx_priv *alx, bool resume) +{ + int err; + + if (!resume) + netif_carrier_off(alx->dev); + + err = alx_alloc_rings(alx); + if (err) + return err; + + alx_configure(alx); + + err = alx_request_irq(alx); + if (err) + goto out_free_rings; + + /* clear old interrupts */ + alx_write_mem32(&alx->hw, ALX_ISR, ~(u32)ALX_ISR_DIS); + + alx_irq_enable(alx); + + if (!resume) + netif_tx_start_all_queues(alx->dev); + + alx_schedule_link_check(alx); + return 0; + +out_free_rings: + alx_free_rings(alx); + return err; +} + +static void __alx_stop(struct alx_priv *alx) +{ + alx_halt(alx); + alx_free_irq(alx); + alx_free_rings(alx); +} + +static const char *alx_speed_desc(u16 speed) +{ + switch (speed) { + case SPEED_1000 + DUPLEX_FULL: + return "1 Gbps Full"; + case SPEED_100 + DUPLEX_FULL: + return "100 Mbps Full"; + case SPEED_100 + DUPLEX_HALF: + return "100 Mbps Half"; + case SPEED_10 + DUPLEX_FULL: + return "10 Mbps Full"; + case SPEED_10 + DUPLEX_HALF: + return "10 Mbps Half"; + default: + return "Unknown speed"; + } +} + +static void alx_check_link(struct alx_priv *alx) +{ + struct alx_hw *hw = &alx->hw; + unsigned long flags; + int speed, old_speed; + int err; + + /* clear PHY internal interrupt status, otherwise the main + * interrupt status will be asserted forever + */ + alx_clear_phy_intr(hw); + + err = alx_get_phy_link(hw, &speed); + if (err < 0) + goto reset; + + spin_lock_irqsave(&alx->irq_lock, flags); + alx->int_mask |= ALX_ISR_PHY; + alx_write_mem32(hw, ALX_IMR, alx->int_mask); + spin_unlock_irqrestore(&alx->irq_lock, flags); + + old_speed = hw->link_speed; + + if (old_speed == speed) + return; + hw->link_speed = speed; + + if (speed != SPEED_UNKNOWN) { + netif_info(alx, link, alx->dev, + "NIC Up: %s\n", alx_speed_desc(speed)); + alx_post_phy_link(hw); + alx_enable_aspm(hw, true, true); + alx_start_mac(hw); + + if (old_speed == SPEED_UNKNOWN) + alx_netif_start(alx); + } else { + /* link is now down */ + alx_netif_stop(alx); + netif_info(alx, link, alx->dev, "Link Down\n"); + err = alx_reset_mac(hw); + if (err) + goto reset; + alx_irq_disable(alx); + + /* MAC reset causes all HW settings to be lost, restore all */ + err = alx_reinit_rings(alx); + if (err) + goto reset; + alx_configure(alx); + alx_enable_aspm(hw, false, true); + alx_post_phy_link(hw); + alx_irq_enable(alx); + } + + return; + +reset: + alx_schedule_reset(alx); +} + +static int alx_open(struct net_device *netdev) +{ + return __alx_open(netdev_priv(netdev), false); +} + +static int alx_stop(struct net_device *netdev) +{ + __alx_stop(netdev_priv(netdev)); + return 0; +} + +static int __alx_shutdown(struct pci_dev *pdev, bool *wol_en) +{ + struct alx_priv *alx = pci_get_drvdata(pdev); + struct net_device *netdev = alx->dev; + struct alx_hw *hw = &alx->hw; + int err, speed; + + netif_device_detach(netdev); + + if (netif_running(netdev)) + __alx_stop(alx); + +#ifdef CONFIG_PM_SLEEP + err = pci_save_state(pdev); + if (err) + return err; +#endif + + err = alx_select_powersaving_speed(hw, &speed); + if (err) + return err; + err = alx_clear_phy_intr(hw); + if (err) + return err; + err = alx_pre_suspend(hw, speed); + if (err) + return err; + err = alx_config_wol(hw); + if (err) + return err; + + *wol_en = false; + if (hw->sleep_ctrl & ALX_SLEEP_ACTIVE) { + netif_info(alx, wol, netdev, + "wol: ctrl=%X, speed=%X\n", + hw->sleep_ctrl, speed); + device_set_wakeup_enable(&pdev->dev, true); + *wol_en = true; + } + + pci_disable_device(pdev); + + return 0; +} + +static void alx_shutdown(struct pci_dev *pdev) +{ + int err; + bool wol_en; + + err = __alx_shutdown(pdev, &wol_en); + if (!err) { + pci_wake_from_d3(pdev, wol_en); + pci_set_power_state(pdev, PCI_D3hot); + } else { + dev_err(&pdev->dev, "shutdown fail %d\n", err); + } +} + +static void alx_link_check(struct work_struct *work) +{ + struct alx_priv *alx; + + alx = container_of(work, struct alx_priv, link_check_wk); + + rtnl_lock(); + alx_check_link(alx); + rtnl_unlock(); +} + +static void alx_reset(struct work_struct *work) +{ + struct alx_priv *alx = container_of(work, struct alx_priv, reset_wk); + + rtnl_lock(); + alx_reinit(alx); + rtnl_unlock(); +} + +static int alx_tx_csum(struct sk_buff *skb, struct alx_txd *first) +{ + u8 cso, css; + + if (skb->ip_summed != CHECKSUM_PARTIAL) + return 0; + + cso = skb_checksum_start_offset(skb); + if (cso & 1) + return -EINVAL; + + css = cso + skb->csum_offset; + first->word1 |= cpu_to_le32((cso >> 1) << TPD_CXSUMSTART_SHIFT); + first->word1 |= cpu_to_le32((css >> 1) << TPD_CXSUMOFFSET_SHIFT); + first->word1 |= cpu_to_le32(1 << TPD_CXSUM_EN_SHIFT); + + return 0; +} + +static int alx_map_tx_skb(struct alx_priv *alx, struct sk_buff *skb) +{ + struct alx_tx_queue *txq = &alx->txq; + struct alx_txd *tpd, *first_tpd; + dma_addr_t dma; + int maplen, f, first_idx = txq->write_idx; + + first_tpd = &txq->tpd[txq->write_idx]; + tpd = first_tpd; + + maplen = skb_headlen(skb); + dma = dma_map_single(&alx->hw.pdev->dev, skb->data, maplen, + DMA_TO_DEVICE); + if (dma_mapping_error(&alx->hw.pdev->dev, dma)) + goto err_dma; + + dma_unmap_len_set(&txq->bufs[txq->write_idx], size, maplen); + dma_unmap_addr_set(&txq->bufs[txq->write_idx], dma, dma); + + tpd->adrl.addr = cpu_to_le64(dma); + tpd->len = cpu_to_le16(maplen); + + for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { + struct skb_frag_struct *frag; + + frag = &skb_shinfo(skb)->frags[f]; + + if (++txq->write_idx == alx->tx_ringsz) + txq->write_idx = 0; + tpd = &txq->tpd[txq->write_idx]; + + tpd->word1 = first_tpd->word1; + + maplen = skb_frag_size(frag); + dma = skb_frag_dma_map(&alx->hw.pdev->dev, frag, 0, + maplen, DMA_TO_DEVICE); + if (dma_mapping_error(&alx->hw.pdev->dev, dma)) + goto err_dma; + dma_unmap_len_set(&txq->bufs[txq->write_idx], size, maplen); + dma_unmap_addr_set(&txq->bufs[txq->write_idx], dma, dma); + + tpd->adrl.addr = cpu_to_le64(dma); + tpd->len = cpu_to_le16(maplen); + } + + /* last TPD, set EOP flag and store skb */ + tpd->word1 |= cpu_to_le32(1 << TPD_EOP_SHIFT); + txq->bufs[txq->write_idx].skb = skb; + + if (++txq->write_idx == alx->tx_ringsz) + txq->write_idx = 0; + + return 0; + +err_dma: + f = first_idx; + while (f != txq->write_idx) { + alx_free_txbuf(alx, f); + if (++f == alx->tx_ringsz) + f = 0; + } + return -ENOMEM; +} + +static netdev_tx_t alx_start_xmit(struct sk_buff *skb, + struct net_device *netdev) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_tx_queue *txq = &alx->txq; + struct alx_txd *first; + int tpdreq = skb_shinfo(skb)->nr_frags + 1; + + if (alx_tpd_avail(alx) < tpdreq) { + netif_stop_queue(alx->dev); + goto drop; + } + + first = &txq->tpd[txq->write_idx]; + memset(first, 0, sizeof(*first)); + + if (alx_tx_csum(skb, first)) + goto drop; + + if (alx_map_tx_skb(alx, skb) < 0) + goto drop; + + netdev_sent_queue(alx->dev, skb->len); + + /* flush updates before updating hardware */ + wmb(); + alx_write_mem16(&alx->hw, ALX_TPD_PRI0_PIDX, txq->write_idx); + + if (alx_tpd_avail(alx) < alx->tx_ringsz/8) + netif_stop_queue(alx->dev); + + return NETDEV_TX_OK; + +drop: + dev_kfree_skb(skb); + return NETDEV_TX_OK; +} + +static void alx_tx_timeout(struct net_device *dev) +{ + struct alx_priv *alx = netdev_priv(dev); + + alx_schedule_reset(alx); +} + +static int alx_mdio_read(struct net_device *netdev, + int prtad, int devad, u16 addr) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + u16 val; + int err; + + if (prtad != hw->mdio.prtad) + return -EINVAL; + + if (devad == MDIO_DEVAD_NONE) + err = alx_read_phy_reg(hw, addr, &val); + else + err = alx_read_phy_ext(hw, devad, addr, &val); + + if (err) + return err; + return val; +} + +static int alx_mdio_write(struct net_device *netdev, + int prtad, int devad, u16 addr, u16 val) +{ + struct alx_priv *alx = netdev_priv(netdev); + struct alx_hw *hw = &alx->hw; + + if (prtad != hw->mdio.prtad) + return -EINVAL; + + if (devad == MDIO_DEVAD_NONE) + return alx_write_phy_reg(hw, addr, val); + + return alx_write_phy_ext(hw, devad, addr, val); +} + +static int alx_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) +{ + struct alx_priv *alx = netdev_priv(netdev); + + if (!netif_running(netdev)) + return -EAGAIN; + + return mdio_mii_ioctl(&alx->hw.mdio, if_mii(ifr), cmd); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void alx_poll_controller(struct net_device *netdev) +{ + struct alx_priv *alx = netdev_priv(netdev); + + if (alx->msi) + alx_intr_msi(0, alx); + else + alx_intr_legacy(0, alx); +} +#endif + +static const struct net_device_ops alx_netdev_ops = { + .ndo_open = alx_open, + .ndo_stop = alx_stop, + .ndo_start_xmit = alx_start_xmit, + .ndo_set_rx_mode = alx_set_rx_mode, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = alx_set_mac_address, + .ndo_change_mtu = alx_change_mtu, + .ndo_do_ioctl = alx_ioctl, + .ndo_tx_timeout = alx_tx_timeout, + .ndo_fix_features = alx_fix_features, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = alx_poll_controller, +#endif +}; + +static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct net_device *netdev; + struct alx_priv *alx; + struct alx_hw *hw; + bool phy_configured; + int bars, pm_cap, err; + + err = pci_enable_device_mem(pdev); + if (err) + return err; + + /* The alx chip can DMA to 64-bit addresses, but it uses a single + * shared register for the high 32 bits, so only a single, aligned, + * 4 GB physical address range can be used for descriptors. + */ + if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) && + !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { + dev_dbg(&pdev->dev, "DMA to 64-BIT addresses\n"); + } else { + err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (err) { + err = dma_set_coherent_mask(&pdev->dev, + DMA_BIT_MASK(32)); + if (err) { + dev_err(&pdev->dev, + "No usable DMA config, aborting\n"); + goto out_pci_disable; + } + } + } + + bars = pci_select_bars(pdev, IORESOURCE_MEM); + err = pci_request_selected_regions(pdev, bars, alx_drv_name); + if (err) { + dev_err(&pdev->dev, + "pci_request_selected_regions failed(bars:%d)\n", bars); + goto out_pci_disable; + } + + pci_enable_pcie_error_reporting(pdev); + pci_set_master(pdev); + + pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM); + if (pm_cap == 0) { + dev_err(&pdev->dev, + "Can't find power management capability, aborting\n"); + err = -EIO; + goto out_pci_release; + } + + err = pci_set_power_state(pdev, PCI_D0); + if (err) + goto out_pci_release; + + netdev = alloc_etherdev(sizeof(*alx)); + if (!netdev) { + err = -ENOMEM; + goto out_pci_release; + } + + SET_NETDEV_DEV(netdev, &pdev->dev); + alx = netdev_priv(netdev); + alx->dev = netdev; + alx->hw.pdev = pdev; + alx->msg_enable = NETIF_MSG_LINK | NETIF_MSG_HW | NETIF_MSG_IFUP | + NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR | NETIF_MSG_WOL; + hw = &alx->hw; + pci_set_drvdata(pdev, alx); + + hw->hw_addr = pci_ioremap_bar(pdev, 0); + if (!hw->hw_addr) { + dev_err(&pdev->dev, "cannot map device registers\n"); + err = -EIO; + goto out_free_netdev; + } + + netdev->netdev_ops = &alx_netdev_ops; + SET_ETHTOOL_OPS(netdev, &alx_ethtool_ops); + netdev->irq = pdev->irq; + netdev->watchdog_timeo = ALX_WATCHDOG_TIME; + + if (ent->driver_data & ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG) + pdev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; + + err = alx_init_sw(alx); + if (err) { + dev_err(&pdev->dev, "net device private data init failed\n"); + goto out_unmap; + } + + alx_reset_pcie(hw); + + phy_configured = alx_phy_configured(hw); + + if (!phy_configured) + alx_reset_phy(hw); + + err = alx_reset_mac(hw); + if (err) { + dev_err(&pdev->dev, "MAC Reset failed, error = %d\n", err); + goto out_unmap; + } + + /* setup link to put it in a known good starting state */ + if (!phy_configured) { + err = alx_setup_speed_duplex(hw, hw->adv_cfg, hw->flowctrl); + if (err) { + dev_err(&pdev->dev, + "failed to configure PHY speed/duplex (err=%d)\n", + err); + goto out_unmap; + } + } + + netdev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM; + + if (alx_get_perm_macaddr(hw, hw->perm_addr)) { + dev_warn(&pdev->dev, + "Invalid permanent address programmed, using random one\n"); + eth_hw_addr_random(netdev); + memcpy(hw->perm_addr, netdev->dev_addr, netdev->addr_len); + } + + memcpy(hw->mac_addr, hw->perm_addr, ETH_ALEN); + memcpy(netdev->dev_addr, hw->mac_addr, ETH_ALEN); + memcpy(netdev->perm_addr, hw->perm_addr, ETH_ALEN); + + hw->mdio.prtad = 0; + hw->mdio.mmds = 0; + hw->mdio.dev = netdev; + hw->mdio.mode_support = MDIO_SUPPORTS_C45 | + MDIO_SUPPORTS_C22 | + MDIO_EMULATE_C22; + hw->mdio.mdio_read = alx_mdio_read; + hw->mdio.mdio_write = alx_mdio_write; + + if (!alx_get_phy_info(hw)) { + dev_err(&pdev->dev, "failed to identify PHY\n"); + err = -EIO; + goto out_unmap; + } + + INIT_WORK(&alx->link_check_wk, alx_link_check); + INIT_WORK(&alx->reset_wk, alx_reset); + spin_lock_init(&alx->hw.mdio_lock); + spin_lock_init(&alx->irq_lock); + + netif_carrier_off(netdev); + + err = register_netdev(netdev); + if (err) { + dev_err(&pdev->dev, "register netdevice failed\n"); + goto out_unmap; + } + + device_set_wakeup_enable(&pdev->dev, hw->sleep_ctrl); + + netdev_info(netdev, + "Qualcomm Atheros AR816x/AR817x Ethernet [%pM]\n", + netdev->dev_addr); + + return 0; + +out_unmap: + iounmap(hw->hw_addr); +out_free_netdev: + free_netdev(netdev); +out_pci_release: + pci_release_selected_regions(pdev, bars); +out_pci_disable: + pci_disable_device(pdev); + return err; +} + +static void alx_remove(struct pci_dev *pdev) +{ + struct alx_priv *alx = pci_get_drvdata(pdev); + struct alx_hw *hw = &alx->hw; + + cancel_work_sync(&alx->link_check_wk); + cancel_work_sync(&alx->reset_wk); + + /* restore permanent mac address */ + alx_set_macaddr(hw, hw->perm_addr); + + unregister_netdev(alx->dev); + iounmap(hw->hw_addr); + pci_release_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_MEM)); + + pci_disable_pcie_error_reporting(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + + free_netdev(alx->dev); +} + +#ifdef CONFIG_PM_SLEEP +static int alx_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + int err; + bool wol_en; + + err = __alx_shutdown(pdev, &wol_en); + if (err) { + dev_err(&pdev->dev, "shutdown fail in suspend %d\n", err); + return err; + } + + if (wol_en) { + pci_prepare_to_sleep(pdev); + } else { + pci_wake_from_d3(pdev, false); + pci_set_power_state(pdev, PCI_D3hot); + } + + return 0; +} + +static int alx_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct alx_priv *alx = pci_get_drvdata(pdev); + struct net_device *netdev = alx->dev; + struct alx_hw *hw = &alx->hw; + int err; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + pci_save_state(pdev); + + pci_enable_wake(pdev, PCI_D3hot, 0); + pci_enable_wake(pdev, PCI_D3cold, 0); + + hw->link_speed = SPEED_UNKNOWN; + alx->int_mask = ALX_ISR_MISC; + + alx_reset_pcie(hw); + alx_reset_phy(hw); + + err = alx_reset_mac(hw); + if (err) { + netif_err(alx, hw, alx->dev, + "resume:reset_mac fail %d\n", err); + return -EIO; + } + + err = alx_setup_speed_duplex(hw, hw->adv_cfg, hw->flowctrl); + if (err) { + netif_err(alx, hw, alx->dev, + "resume:setup_speed_duplex fail %d\n", err); + return -EIO; + } + + if (netif_running(netdev)) { + err = __alx_open(alx, true); + if (err) + return err; + } + + netif_device_attach(netdev); + + return err; +} +#endif + +static pci_ers_result_t alx_pci_error_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct alx_priv *alx = pci_get_drvdata(pdev); + struct net_device *netdev = alx->dev; + pci_ers_result_t rc = PCI_ERS_RESULT_NEED_RESET; + + dev_info(&pdev->dev, "pci error detected\n"); + + rtnl_lock(); + + if (netif_running(netdev)) { + netif_device_detach(netdev); + alx_halt(alx); + } + + if (state == pci_channel_io_perm_failure) + rc = PCI_ERS_RESULT_DISCONNECT; + else + pci_disable_device(pdev); + + rtnl_unlock(); + + return rc; +} + +static pci_ers_result_t alx_pci_error_slot_reset(struct pci_dev *pdev) +{ + struct alx_priv *alx = pci_get_drvdata(pdev); + struct alx_hw *hw = &alx->hw; + pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT; + + dev_info(&pdev->dev, "pci error slot reset\n"); + + rtnl_lock(); + + if (pci_enable_device(pdev)) { + dev_err(&pdev->dev, "Failed to re-enable PCI device after reset\n"); + goto out; + } + + pci_set_master(pdev); + pci_enable_wake(pdev, PCI_D3hot, 0); + pci_enable_wake(pdev, PCI_D3cold, 0); + + alx_reset_pcie(hw); + if (!alx_reset_mac(hw)) + rc = PCI_ERS_RESULT_RECOVERED; +out: + pci_cleanup_aer_uncorrect_error_status(pdev); + + rtnl_unlock(); + + return rc; +} + +static void alx_pci_error_resume(struct pci_dev *pdev) +{ + struct alx_priv *alx = pci_get_drvdata(pdev); + struct net_device *netdev = alx->dev; + + dev_info(&pdev->dev, "pci error resume\n"); + + rtnl_lock(); + + if (netif_running(netdev)) { + alx_activate(alx); + netif_device_attach(netdev); + } + + rtnl_unlock(); +} + +static const struct pci_error_handlers alx_err_handlers = { + .error_detected = alx_pci_error_detected, + .slot_reset = alx_pci_error_slot_reset, + .resume = alx_pci_error_resume, +}; + +#ifdef CONFIG_PM_SLEEP +static SIMPLE_DEV_PM_OPS(alx_pm_ops, alx_suspend, alx_resume); +#define ALX_PM_OPS (&alx_pm_ops) +#else +#define ALX_PM_OPS NULL +#endif + +static DEFINE_PCI_DEVICE_TABLE(alx_pci_tbl) = { + { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_AR8161), + .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG }, + { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_E2200), + .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG }, + { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_AR8162), + .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG }, + { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_AR8171) }, + { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_AR8172) }, + {} +}; + +static struct pci_driver alx_driver = { + .name = alx_drv_name, + .id_table = alx_pci_tbl, + .probe = alx_probe, + .remove = alx_remove, + .shutdown = alx_shutdown, + .err_handler = &alx_err_handlers, + .driver.pm = ALX_PM_OPS, +}; + +module_pci_driver(alx_driver); +MODULE_DEVICE_TABLE(pci, alx_pci_tbl); +MODULE_AUTHOR("Johannes Berg "); +MODULE_AUTHOR("Qualcomm Corporation, "); +MODULE_DESCRIPTION( + "Qualcomm Atheros(R) AR816x/AR817x PCI-E Ethernet Network Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/atheros/alx/reg.h b/drivers/net/ethernet/atheros/alx/reg.h new file mode 100644 index 0000000..e4358c9 --- /dev/null +++ b/drivers/net/ethernet/atheros/alx/reg.h @@ -0,0 +1,810 @@ +/* + * Copyright (c) 2013 Johannes Berg + * + * This file is free software: you may copy, redistribute and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, either version 2 of the License, or (at your + * option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2012 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef ALX_REG_H +#define ALX_REG_H + +#define ALX_DEV_ID_AR8161 0x1091 +#define ALX_DEV_ID_E2200 0xe091 +#define ALX_DEV_ID_AR8162 0x1090 +#define ALX_DEV_ID_AR8171 0x10A1 +#define ALX_DEV_ID_AR8172 0x10A0 + +/* rev definition, + * bit(0): with xD support + * bit(1): with Card Reader function + * bit(7:2): real revision + */ +#define ALX_PCI_REVID_SHIFT 3 +#define ALX_REV_A0 0 +#define ALX_REV_A1 1 +#define ALX_REV_B0 2 +#define ALX_REV_C0 3 + +#define ALX_DEV_CTRL 0x0060 +#define ALX_DEV_CTRL_MAXRRS_MIN 2 + +#define ALX_MSIX_MASK 0x0090 + +#define ALX_UE_SVRT 0x010C +#define ALX_UE_SVRT_FCPROTERR BIT(13) +#define ALX_UE_SVRT_DLPROTERR BIT(4) + +/* eeprom & flash load register */ +#define ALX_EFLD 0x0204 +#define ALX_EFLD_F_EXIST BIT(10) +#define ALX_EFLD_E_EXIST BIT(9) +#define ALX_EFLD_STAT BIT(5) +#define ALX_EFLD_START BIT(0) + +/* eFuse load register */ +#define ALX_SLD 0x0218 +#define ALX_SLD_STAT BIT(12) +#define ALX_SLD_START BIT(11) +#define ALX_SLD_MAX_TO 100 + +#define ALX_PDLL_TRNS1 0x1104 +#define ALX_PDLL_TRNS1_D3PLLOFF_EN BIT(11) + +#define ALX_PMCTRL 0x12F8 +#define ALX_PMCTRL_HOTRST_WTEN BIT(31) +/* bit30: L0s/L1 controlled by MAC based on throughput(setting in 15A0) */ +#define ALX_PMCTRL_ASPM_FCEN BIT(30) +#define ALX_PMCTRL_SADLY_EN BIT(29) +#define ALX_PMCTRL_LCKDET_TIMER_MASK 0xF +#define ALX_PMCTRL_LCKDET_TIMER_SHIFT 24 +#define ALX_PMCTRL_LCKDET_TIMER_DEF 0xC +/* bit[23:20] if pm_request_l1 time > @, then enter L0s not L1 */ +#define ALX_PMCTRL_L1REQ_TO_MASK 0xF +#define ALX_PMCTRL_L1REQ_TO_SHIFT 20 +#define ALX_PMCTRL_L1REG_TO_DEF 0xF +#define ALX_PMCTRL_TXL1_AFTER_L0S BIT(19) +#define ALX_PMCTRL_L1_TIMER_MASK 0x7 +#define ALX_PMCTRL_L1_TIMER_SHIFT 16 +#define ALX_PMCTRL_L1_TIMER_16US 4 +#define ALX_PMCTRL_RCVR_WT_1US BIT(15) +/* bit13: enable pcie clk switch in L1 state */ +#define ALX_PMCTRL_L1_CLKSW_EN BIT(13) +#define ALX_PMCTRL_L0S_EN BIT(12) +#define ALX_PMCTRL_RXL1_AFTER_L0S BIT(11) +#define ALX_PMCTRL_L1_BUFSRX_EN BIT(7) +/* bit6: power down serdes RX */ +#define ALX_PMCTRL_L1_SRDSRX_PWD BIT(6) +#define ALX_PMCTRL_L1_SRDSPLL_EN BIT(5) +#define ALX_PMCTRL_L1_SRDS_EN BIT(4) +#define ALX_PMCTRL_L1_EN BIT(3) + +/*******************************************************/ +/* following registers are mapped only to memory space */ +/*******************************************************/ + +#define ALX_MASTER 0x1400 +/* bit12: 1:alwys select pclk from serdes, not sw to 25M */ +#define ALX_MASTER_PCLKSEL_SRDS BIT(12) +/* bit11: irq moduration for rx */ +#define ALX_MASTER_IRQMOD2_EN BIT(11) +/* bit10: irq moduration for tx/rx */ +#define ALX_MASTER_IRQMOD1_EN BIT(10) +#define ALX_MASTER_SYSALVTIMER_EN BIT(7) +#define ALX_MASTER_OOB_DIS BIT(6) +/* bit5: wakeup without pcie clk */ +#define ALX_MASTER_WAKEN_25M BIT(5) +/* bit0: MAC & DMA reset */ +#define ALX_MASTER_DMA_MAC_RST BIT(0) +#define ALX_DMA_MAC_RST_TO 50 + +#define ALX_IRQ_MODU_TIMER 0x1408 +#define ALX_IRQ_MODU_TIMER1_MASK 0xFFFF +#define ALX_IRQ_MODU_TIMER1_SHIFT 0 + +#define ALX_PHY_CTRL 0x140C +#define ALX_PHY_CTRL_100AB_EN BIT(17) +/* bit14: affect MAC & PHY, go to low power sts */ +#define ALX_PHY_CTRL_POWER_DOWN BIT(14) +/* bit13: 1:pll always ON, 0:can switch in lpw */ +#define ALX_PHY_CTRL_PLL_ON BIT(13) +#define ALX_PHY_CTRL_RST_ANALOG BIT(12) +#define ALX_PHY_CTRL_HIB_PULSE BIT(11) +#define ALX_PHY_CTRL_HIB_EN BIT(10) +#define ALX_PHY_CTRL_IDDQ BIT(7) +#define ALX_PHY_CTRL_GATE_25M BIT(5) +#define ALX_PHY_CTRL_LED_MODE BIT(2) +/* bit0: out of dsp RST state */ +#define ALX_PHY_CTRL_DSPRST_OUT BIT(0) +#define ALX_PHY_CTRL_DSPRST_TO 80 +#define ALX_PHY_CTRL_CLS (ALX_PHY_CTRL_LED_MODE | \ + ALX_PHY_CTRL_100AB_EN | \ + ALX_PHY_CTRL_PLL_ON) + +#define ALX_MAC_STS 0x1410 +#define ALX_MAC_STS_TXQ_BUSY BIT(3) +#define ALX_MAC_STS_RXQ_BUSY BIT(2) +#define ALX_MAC_STS_TXMAC_BUSY BIT(1) +#define ALX_MAC_STS_RXMAC_BUSY BIT(0) +#define ALX_MAC_STS_IDLE (ALX_MAC_STS_TXQ_BUSY | \ + ALX_MAC_STS_RXQ_BUSY | \ + ALX_MAC_STS_TXMAC_BUSY | \ + ALX_MAC_STS_RXMAC_BUSY) + +#define ALX_MDIO 0x1414 +#define ALX_MDIO_MODE_EXT BIT(30) +#define ALX_MDIO_BUSY BIT(27) +#define ALX_MDIO_CLK_SEL_MASK 0x7 +#define ALX_MDIO_CLK_SEL_SHIFT 24 +#define ALX_MDIO_CLK_SEL_25MD4 0 +#define ALX_MDIO_CLK_SEL_25MD128 7 +#define ALX_MDIO_START BIT(23) +#define ALX_MDIO_SPRES_PRMBL BIT(22) +/* bit21: 1:read,0:write */ +#define ALX_MDIO_OP_READ BIT(21) +#define ALX_MDIO_REG_MASK 0x1F +#define ALX_MDIO_REG_SHIFT 16 +#define ALX_MDIO_DATA_MASK 0xFFFF +#define ALX_MDIO_DATA_SHIFT 0 +#define ALX_MDIO_MAX_AC_TO 120 + +#define ALX_MDIO_EXTN 0x1448 +#define ALX_MDIO_EXTN_DEVAD_MASK 0x1F +#define ALX_MDIO_EXTN_DEVAD_SHIFT 16 +#define ALX_MDIO_EXTN_REG_MASK 0xFFFF +#define ALX_MDIO_EXTN_REG_SHIFT 0 + +#define ALX_SERDES 0x1424 +#define ALX_SERDES_PHYCLK_SLWDWN BIT(18) +#define ALX_SERDES_MACCLK_SLWDWN BIT(17) + +#define ALX_LPI_CTRL 0x1440 +#define ALX_LPI_CTRL_EN BIT(0) + +/* for B0+, bit[13..] for C0+ */ +#define ALX_HRTBT_EXT_CTRL 0x1AD0 +#define L1F_HRTBT_EXT_CTRL_PERIOD_HIGH_MASK 0x3F +#define L1F_HRTBT_EXT_CTRL_PERIOD_HIGH_SHIFT 24 +#define L1F_HRTBT_EXT_CTRL_SWOI_STARTUP_PKT_EN BIT(23) +#define L1F_HRTBT_EXT_CTRL_IOAC_2_FRAGMENTED BIT(22) +#define L1F_HRTBT_EXT_CTRL_IOAC_1_FRAGMENTED BIT(21) +#define L1F_HRTBT_EXT_CTRL_IOAC_1_KEEPALIVE_EN BIT(20) +#define L1F_HRTBT_EXT_CTRL_IOAC_1_HAS_VLAN BIT(19) +#define L1F_HRTBT_EXT_CTRL_IOAC_1_IS_8023 BIT(18) +#define L1F_HRTBT_EXT_CTRL_IOAC_1_IS_IPV6 BIT(17) +#define L1F_HRTBT_EXT_CTRL_IOAC_2_KEEPALIVE_EN BIT(16) +#define L1F_HRTBT_EXT_CTRL_IOAC_2_HAS_VLAN BIT(15) +#define L1F_HRTBT_EXT_CTRL_IOAC_2_IS_8023 BIT(14) +#define L1F_HRTBT_EXT_CTRL_IOAC_2_IS_IPV6 BIT(13) +#define ALX_HRTBT_EXT_CTRL_NS_EN BIT(12) +#define ALX_HRTBT_EXT_CTRL_FRAG_LEN_MASK 0xFF +#define ALX_HRTBT_EXT_CTRL_FRAG_LEN_SHIFT 4 +#define ALX_HRTBT_EXT_CTRL_IS_8023 BIT(3) +#define ALX_HRTBT_EXT_CTRL_IS_IPV6 BIT(2) +#define ALX_HRTBT_EXT_CTRL_WAKEUP_EN BIT(1) +#define ALX_HRTBT_EXT_CTRL_ARP_EN BIT(0) + +#define ALX_HRTBT_REM_IPV4_ADDR 0x1AD4 +#define ALX_HRTBT_HOST_IPV4_ADDR 0x1478 +#define ALX_HRTBT_REM_IPV6_ADDR3 0x1AD8 +#define ALX_HRTBT_REM_IPV6_ADDR2 0x1ADC +#define ALX_HRTBT_REM_IPV6_ADDR1 0x1AE0 +#define ALX_HRTBT_REM_IPV6_ADDR0 0x1AE4 + +/* 1B8C ~ 1B94 for C0+ */ +#define ALX_SWOI_ACER_CTRL 0x1B8C +#define ALX_SWOI_ORIG_ACK_NAK_EN BIT(20) +#define ALX_SWOI_ORIG_ACK_NAK_PKT_LEN_MASK 0XFF +#define ALX_SWOI_ORIG_ACK_NAK_PKT_LEN_SHIFT 12 +#define ALX_SWOI_ORIG_ACK_ADDR_MASK 0XFFF +#define ALX_SWOI_ORIG_ACK_ADDR_SHIFT 0 + +#define ALX_SWOI_IOAC_CTRL_2 0x1B90 +#define ALX_SWOI_IOAC_CTRL_2_SWOI_1_FRAG_LEN_MASK 0xFF +#define ALX_SWOI_IOAC_CTRL_2_SWOI_1_FRAG_LEN_SHIFT 24 +#define ALX_SWOI_IOAC_CTRL_2_SWOI_1_PKT_LEN_MASK 0xFFF +#define ALX_SWOI_IOAC_CTRL_2_SWOI_1_PKT_LEN_SHIFT 12 +#define ALX_SWOI_IOAC_CTRL_2_SWOI_1_HDR_ADDR_MASK 0xFFF +#define ALX_SWOI_IOAC_CTRL_2_SWOI_1_HDR_ADDR_SHIFT 0 + +#define ALX_SWOI_IOAC_CTRL_3 0x1B94 +#define ALX_SWOI_IOAC_CTRL_3_SWOI_2_FRAG_LEN_MASK 0xFF +#define ALX_SWOI_IOAC_CTRL_3_SWOI_2_FRAG_LEN_SHIFT 24 +#define ALX_SWOI_IOAC_CTRL_3_SWOI_2_PKT_LEN_MASK 0xFFF +#define ALX_SWOI_IOAC_CTRL_3_SWOI_2_PKT_LEN_SHIFT 12 +#define ALX_SWOI_IOAC_CTRL_3_SWOI_2_HDR_ADDR_MASK 0xFFF +#define ALX_SWOI_IOAC_CTRL_3_SWOI_2_HDR_ADDR_SHIFT 0 + +/* for B0 */ +#define ALX_IDLE_DECISN_TIMER 0x1474 +/* 1ms */ +#define ALX_IDLE_DECISN_TIMER_DEF 0x400 + +#define ALX_MAC_CTRL 0x1480 +#define ALX_MAC_CTRL_FAST_PAUSE BIT(31) +#define ALX_MAC_CTRL_WOLSPED_SWEN BIT(30) +/* bit29: 1:legacy(hi5b), 0:marvl(lo5b)*/ +#define ALX_MAC_CTRL_MHASH_ALG_HI5B BIT(29) +#define ALX_MAC_CTRL_BRD_EN BIT(26) +#define ALX_MAC_CTRL_MULTIALL_EN BIT(25) +#define ALX_MAC_CTRL_SPEED_MASK 0x3 +#define ALX_MAC_CTRL_SPEED_SHIFT 20 +#define ALX_MAC_CTRL_SPEED_10_100 1 +#define ALX_MAC_CTRL_SPEED_1000 2 +#define ALX_MAC_CTRL_PROMISC_EN BIT(15) +#define ALX_MAC_CTRL_VLANSTRIP BIT(14) +#define ALX_MAC_CTRL_PRMBLEN_MASK 0xF +#define ALX_MAC_CTRL_PRMBLEN_SHIFT 10 +#define ALX_MAC_CTRL_PCRCE BIT(7) +#define ALX_MAC_CTRL_CRCE BIT(6) +#define ALX_MAC_CTRL_FULLD BIT(5) +#define ALX_MAC_CTRL_RXFC_EN BIT(3) +#define ALX_MAC_CTRL_TXFC_EN BIT(2) +#define ALX_MAC_CTRL_RX_EN BIT(1) +#define ALX_MAC_CTRL_TX_EN BIT(0) + +#define ALX_STAD0 0x1488 +#define ALX_STAD1 0x148C + +#define ALX_HASH_TBL0 0x1490 +#define ALX_HASH_TBL1 0x1494 + +#define ALX_MTU 0x149C +#define ALX_MTU_JUMBO_TH 1514 +#define ALX_MTU_STD_ALGN 1536 + +#define ALX_SRAM5 0x1524 +#define ALX_SRAM_RXF_LEN_MASK 0xFFF +#define ALX_SRAM_RXF_LEN_SHIFT 0 +#define ALX_SRAM_RXF_LEN_8K (8*1024) + +#define ALX_SRAM9 0x1534 +#define ALX_SRAM_LOAD_PTR BIT(0) + +#define ALX_RX_BASE_ADDR_HI 0x1540 + +#define ALX_TX_BASE_ADDR_HI 0x1544 + +#define ALX_RFD_ADDR_LO 0x1550 +#define ALX_RFD_RING_SZ 0x1560 +#define ALX_RFD_BUF_SZ 0x1564 + +#define ALX_RRD_ADDR_LO 0x1568 +#define ALX_RRD_RING_SZ 0x1578 + +/* pri3: highest, pri0: lowest */ +#define ALX_TPD_PRI3_ADDR_LO 0x14E4 +#define ALX_TPD_PRI2_ADDR_LO 0x14E0 +#define ALX_TPD_PRI1_ADDR_LO 0x157C +#define ALX_TPD_PRI0_ADDR_LO 0x1580 + +/* producer index is 16bit */ +#define ALX_TPD_PRI3_PIDX 0x1618 +#define ALX_TPD_PRI2_PIDX 0x161A +#define ALX_TPD_PRI1_PIDX 0x15F0 +#define ALX_TPD_PRI0_PIDX 0x15F2 + +/* consumer index is 16bit */ +#define ALX_TPD_PRI3_CIDX 0x161C +#define ALX_TPD_PRI2_CIDX 0x161E +#define ALX_TPD_PRI1_CIDX 0x15F4 +#define ALX_TPD_PRI0_CIDX 0x15F6 + +#define ALX_TPD_RING_SZ 0x1584 + +#define ALX_TXQ0 0x1590 +#define ALX_TXQ0_TXF_BURST_PREF_MASK 0xFFFF +#define ALX_TXQ0_TXF_BURST_PREF_SHIFT 16 +#define ALX_TXQ_TXF_BURST_PREF_DEF 0x200 +#define ALX_TXQ0_LSO_8023_EN BIT(7) +#define ALX_TXQ0_MODE_ENHANCE BIT(6) +#define ALX_TXQ0_EN BIT(5) +#define ALX_TXQ0_SUPT_IPOPT BIT(4) +#define ALX_TXQ0_TPD_BURSTPREF_MASK 0xF +#define ALX_TXQ0_TPD_BURSTPREF_SHIFT 0 +#define ALX_TXQ_TPD_BURSTPREF_DEF 5 + +#define ALX_TXQ1 0x1594 +/* bit11: drop large packet, len > (rfd buf) */ +#define ALX_TXQ1_ERRLGPKT_DROP_EN BIT(11) +#define ALX_TXQ1_JUMBO_TSO_TH (7*1024) + +#define ALX_RXQ0 0x15A0 +#define ALX_RXQ0_EN BIT(31) +#define ALX_RXQ0_RSS_HASH_EN BIT(29) +#define ALX_RXQ0_RSS_MODE_MASK 0x3 +#define ALX_RXQ0_RSS_MODE_SHIFT 26 +#define ALX_RXQ0_RSS_MODE_DIS 0 +#define ALX_RXQ0_RSS_MODE_MQMI 3 +#define ALX_RXQ0_NUM_RFD_PREF_MASK 0x3F +#define ALX_RXQ0_NUM_RFD_PREF_SHIFT 20 +#define ALX_RXQ0_NUM_RFD_PREF_DEF 8 +#define ALX_RXQ0_IDT_TBL_SIZE_MASK 0x1FF +#define ALX_RXQ0_IDT_TBL_SIZE_SHIFT 8 +#define ALX_RXQ0_IDT_TBL_SIZE_DEF 0x100 +#define ALX_RXQ0_IDT_TBL_SIZE_NORMAL 128 +#define ALX_RXQ0_IPV6_PARSE_EN BIT(7) +#define ALX_RXQ0_RSS_HSTYP_MASK 0xF +#define ALX_RXQ0_RSS_HSTYP_SHIFT 2 +#define ALX_RXQ0_RSS_HSTYP_IPV6_TCP_EN BIT(5) +#define ALX_RXQ0_RSS_HSTYP_IPV6_EN BIT(4) +#define ALX_RXQ0_RSS_HSTYP_IPV4_TCP_EN BIT(3) +#define ALX_RXQ0_RSS_HSTYP_IPV4_EN BIT(2) +#define ALX_RXQ0_RSS_HSTYP_ALL (ALX_RXQ0_RSS_HSTYP_IPV6_TCP_EN | \ + ALX_RXQ0_RSS_HSTYP_IPV4_TCP_EN | \ + ALX_RXQ0_RSS_HSTYP_IPV6_EN | \ + ALX_RXQ0_RSS_HSTYP_IPV4_EN) +#define ALX_RXQ0_ASPM_THRESH_MASK 0x3 +#define ALX_RXQ0_ASPM_THRESH_SHIFT 0 +#define ALX_RXQ0_ASPM_THRESH_100M 3 + +#define ALX_RXQ2 0x15A8 +#define ALX_RXQ2_RXF_XOFF_THRESH_MASK 0xFFF +#define ALX_RXQ2_RXF_XOFF_THRESH_SHIFT 16 +#define ALX_RXQ2_RXF_XON_THRESH_MASK 0xFFF +#define ALX_RXQ2_RXF_XON_THRESH_SHIFT 0 +/* Size = tx-packet(1522) + IPG(12) + SOF(8) + 64(Pause) + IPG(12) + SOF(8) + + * rx-packet(1522) + delay-of-link(64) + * = 3212. + */ +#define ALX_RXQ2_RXF_FLOW_CTRL_RSVD 3212 + +#define ALX_DMA 0x15C0 +#define ALX_DMA_RCHNL_SEL_MASK 0x3 +#define ALX_DMA_RCHNL_SEL_SHIFT 26 +#define ALX_DMA_WDLY_CNT_MASK 0xF +#define ALX_DMA_WDLY_CNT_SHIFT 16 +#define ALX_DMA_WDLY_CNT_DEF 4 +#define ALX_DMA_RDLY_CNT_MASK 0x1F +#define ALX_DMA_RDLY_CNT_SHIFT 11 +#define ALX_DMA_RDLY_CNT_DEF 15 +/* bit10: 0:tpd with pri, 1: data */ +#define ALX_DMA_RREQ_PRI_DATA BIT(10) +#define ALX_DMA_RREQ_BLEN_MASK 0x7 +#define ALX_DMA_RREQ_BLEN_SHIFT 4 +#define ALX_DMA_RORDER_MODE_MASK 0x7 +#define ALX_DMA_RORDER_MODE_SHIFT 0 +#define ALX_DMA_RORDER_MODE_OUT 4 + +#define ALX_WOL0 0x14A0 +#define ALX_WOL0_PME_LINK BIT(5) +#define ALX_WOL0_LINK_EN BIT(4) +#define ALX_WOL0_PME_MAGIC_EN BIT(3) +#define ALX_WOL0_MAGIC_EN BIT(2) + +#define ALX_RFD_PIDX 0x15E0 + +#define ALX_RFD_CIDX 0x15F8 + +/* MIB */ +#define ALX_MIB_BASE 0x1700 +#define ALX_MIB_RX_OK (ALX_MIB_BASE + 0) +#define ALX_MIB_RX_ERRADDR (ALX_MIB_BASE + 92) +#define ALX_MIB_TX_OK (ALX_MIB_BASE + 96) +#define ALX_MIB_TX_MCCNT (ALX_MIB_BASE + 192) + +#define ALX_RX_STATS_BIN ALX_MIB_RX_OK +#define ALX_RX_STATS_END ALX_MIB_RX_ERRADDR +#define ALX_TX_STATS_BIN ALX_MIB_TX_OK +#define ALX_TX_STATS_END ALX_MIB_TX_MCCNT + +#define ALX_ISR 0x1600 +#define ALX_ISR_DIS BIT(31) +#define ALX_ISR_RX_Q7 BIT(30) +#define ALX_ISR_RX_Q6 BIT(29) +#define ALX_ISR_RX_Q5 BIT(28) +#define ALX_ISR_RX_Q4 BIT(27) +#define ALX_ISR_PCIE_LNKDOWN BIT(26) +#define ALX_ISR_RX_Q3 BIT(19) +#define ALX_ISR_RX_Q2 BIT(18) +#define ALX_ISR_RX_Q1 BIT(17) +#define ALX_ISR_RX_Q0 BIT(16) +#define ALX_ISR_TX_Q0 BIT(15) +#define ALX_ISR_PHY BIT(12) +#define ALX_ISR_DMAW BIT(10) +#define ALX_ISR_DMAR BIT(9) +#define ALX_ISR_TXF_UR BIT(8) +#define ALX_ISR_TX_Q3 BIT(7) +#define ALX_ISR_TX_Q2 BIT(6) +#define ALX_ISR_TX_Q1 BIT(5) +#define ALX_ISR_RFD_UR BIT(4) +#define ALX_ISR_RXF_OV BIT(3) +#define ALX_ISR_MANU BIT(2) +#define ALX_ISR_TIMER BIT(1) +#define ALX_ISR_SMB BIT(0) + +#define ALX_IMR 0x1604 + +/* re-send assert msg if SW no response */ +#define ALX_INT_RETRIG 0x1608 +/* 40ms */ +#define ALX_INT_RETRIG_TO 20000 + +#define ALX_SMB_TIMER 0x15C4 + +#define ALX_TINT_TPD_THRSHLD 0x15C8 + +#define ALX_TINT_TIMER 0x15CC + +#define ALX_CLK_GATE 0x1814 +#define ALX_CLK_GATE_RXMAC BIT(5) +#define ALX_CLK_GATE_TXMAC BIT(4) +#define ALX_CLK_GATE_RXQ BIT(3) +#define ALX_CLK_GATE_TXQ BIT(2) +#define ALX_CLK_GATE_DMAR BIT(1) +#define ALX_CLK_GATE_DMAW BIT(0) +#define ALX_CLK_GATE_ALL (ALX_CLK_GATE_RXMAC | \ + ALX_CLK_GATE_TXMAC | \ + ALX_CLK_GATE_RXQ | \ + ALX_CLK_GATE_TXQ | \ + ALX_CLK_GATE_DMAR | \ + ALX_CLK_GATE_DMAW) + +/* interop between drivers */ +#define ALX_DRV 0x1804 +#define ALX_DRV_PHY_AUTO BIT(28) +#define ALX_DRV_PHY_1000 BIT(27) +#define ALX_DRV_PHY_100 BIT(26) +#define ALX_DRV_PHY_10 BIT(25) +#define ALX_DRV_PHY_DUPLEX BIT(24) +/* bit23: adv Pause */ +#define ALX_DRV_PHY_PAUSE BIT(23) +/* bit22: adv Asym Pause */ +#define ALX_DRV_PHY_MASK 0xFF +#define ALX_DRV_PHY_SHIFT 21 +#define ALX_DRV_PHY_UNKNOWN 0 + +/* flag of phy inited */ +#define ALX_PHY_INITED 0x003F + +/* reg 1830 ~ 186C for C0+, 16 bit map patterns and wake packet detection */ +#define ALX_WOL_CTRL2 0x1830 +#define ALX_WOL_CTRL2_DATA_STORE BIT(3) +#define ALX_WOL_CTRL2_PTRN_EVT BIT(2) +#define ALX_WOL_CTRL2_PME_PTRN_EN BIT(1) +#define ALX_WOL_CTRL2_PTRN_EN BIT(0) + +#define ALX_WOL_CTRL3 0x1834 +#define ALX_WOL_CTRL3_PTRN_ADDR_MASK 0xFFFFF +#define ALX_WOL_CTRL3_PTRN_ADDR_SHIFT 0 + +#define ALX_WOL_CTRL4 0x1838 +#define ALX_WOL_CTRL4_PT15_MATCH BIT(31) +#define ALX_WOL_CTRL4_PT14_MATCH BIT(30) +#define ALX_WOL_CTRL4_PT13_MATCH BIT(29) +#define ALX_WOL_CTRL4_PT12_MATCH BIT(28) +#define ALX_WOL_CTRL4_PT11_MATCH BIT(27) +#define ALX_WOL_CTRL4_PT10_MATCH BIT(26) +#define ALX_WOL_CTRL4_PT9_MATCH BIT(25) +#define ALX_WOL_CTRL4_PT8_MATCH BIT(24) +#define ALX_WOL_CTRL4_PT7_MATCH BIT(23) +#define ALX_WOL_CTRL4_PT6_MATCH BIT(22) +#define ALX_WOL_CTRL4_PT5_MATCH BIT(21) +#define ALX_WOL_CTRL4_PT4_MATCH BIT(20) +#define ALX_WOL_CTRL4_PT3_MATCH BIT(19) +#define ALX_WOL_CTRL4_PT2_MATCH BIT(18) +#define ALX_WOL_CTRL4_PT1_MATCH BIT(17) +#define ALX_WOL_CTRL4_PT0_MATCH BIT(16) +#define ALX_WOL_CTRL4_PT15_EN BIT(15) +#define ALX_WOL_CTRL4_PT14_EN BIT(14) +#define ALX_WOL_CTRL4_PT13_EN BIT(13) +#define ALX_WOL_CTRL4_PT12_EN BIT(12) +#define ALX_WOL_CTRL4_PT11_EN BIT(11) +#define ALX_WOL_CTRL4_PT10_EN BIT(10) +#define ALX_WOL_CTRL4_PT9_EN BIT(9) +#define ALX_WOL_CTRL4_PT8_EN BIT(8) +#define ALX_WOL_CTRL4_PT7_EN BIT(7) +#define ALX_WOL_CTRL4_PT6_EN BIT(6) +#define ALX_WOL_CTRL4_PT5_EN BIT(5) +#define ALX_WOL_CTRL4_PT4_EN BIT(4) +#define ALX_WOL_CTRL4_PT3_EN BIT(3) +#define ALX_WOL_CTRL4_PT2_EN BIT(2) +#define ALX_WOL_CTRL4_PT1_EN BIT(1) +#define ALX_WOL_CTRL4_PT0_EN BIT(0) + +#define ALX_WOL_CTRL5 0x183C +#define ALX_WOL_CTRL5_PT3_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT3_LEN_SHIFT 24 +#define ALX_WOL_CTRL5_PT2_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT2_LEN_SHIFT 16 +#define ALX_WOL_CTRL5_PT1_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT1_LEN_SHIFT 8 +#define ALX_WOL_CTRL5_PT0_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT0_LEN_SHIFT 0 + +#define ALX_WOL_CTRL6 0x1840 +#define ALX_WOL_CTRL5_PT7_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT7_LEN_SHIFT 24 +#define ALX_WOL_CTRL5_PT6_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT6_LEN_SHIFT 16 +#define ALX_WOL_CTRL5_PT5_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT5_LEN_SHIFT 8 +#define ALX_WOL_CTRL5_PT4_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT4_LEN_SHIFT 0 + +#define ALX_WOL_CTRL7 0x1844 +#define ALX_WOL_CTRL5_PT11_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT11_LEN_SHIFT 24 +#define ALX_WOL_CTRL5_PT10_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT10_LEN_SHIFT 16 +#define ALX_WOL_CTRL5_PT9_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT9_LEN_SHIFT 8 +#define ALX_WOL_CTRL5_PT8_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT8_LEN_SHIFT 0 + +#define ALX_WOL_CTRL8 0x1848 +#define ALX_WOL_CTRL5_PT15_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT15_LEN_SHIFT 24 +#define ALX_WOL_CTRL5_PT14_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT14_LEN_SHIFT 16 +#define ALX_WOL_CTRL5_PT13_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT13_LEN_SHIFT 8 +#define ALX_WOL_CTRL5_PT12_LEN_MASK 0xFF +#define ALX_WOL_CTRL5_PT12_LEN_SHIFT 0 + +#define ALX_ACER_FIXED_PTN0 0x1850 +#define ALX_ACER_FIXED_PTN0_MASK 0xFFFFFFFF +#define ALX_ACER_FIXED_PTN0_SHIFT 0 + +#define ALX_ACER_FIXED_PTN1 0x1854 +#define ALX_ACER_FIXED_PTN1_MASK 0xFFFF +#define ALX_ACER_FIXED_PTN1_SHIFT 0 + +#define ALX_ACER_RANDOM_NUM0 0x1858 +#define ALX_ACER_RANDOM_NUM0_MASK 0xFFFFFFFF +#define ALX_ACER_RANDOM_NUM0_SHIFT 0 + +#define ALX_ACER_RANDOM_NUM1 0x185C +#define ALX_ACER_RANDOM_NUM1_MASK 0xFFFFFFFF +#define ALX_ACER_RANDOM_NUM1_SHIFT 0 + +#define ALX_ACER_RANDOM_NUM2 0x1860 +#define ALX_ACER_RANDOM_NUM2_MASK 0xFFFFFFFF +#define ALX_ACER_RANDOM_NUM2_SHIFT 0 + +#define ALX_ACER_RANDOM_NUM3 0x1864 +#define ALX_ACER_RANDOM_NUM3_MASK 0xFFFFFFFF +#define ALX_ACER_RANDOM_NUM3_SHIFT 0 + +#define ALX_ACER_MAGIC 0x1868 +#define ALX_ACER_MAGIC_EN BIT(31) +#define ALX_ACER_MAGIC_PME_EN BIT(30) +#define ALX_ACER_MAGIC_MATCH BIT(29) +#define ALX_ACER_MAGIC_FF_CHECK BIT(10) +#define ALX_ACER_MAGIC_RAN_LEN_MASK 0x1F +#define ALX_ACER_MAGIC_RAN_LEN_SHIFT 5 +#define ALX_ACER_MAGIC_FIX_LEN_MASK 0x1F +#define ALX_ACER_MAGIC_FIX_LEN_SHIFT 0 + +#define ALX_ACER_TIMER 0x186C +#define ALX_ACER_TIMER_EN BIT(31) +#define ALX_ACER_TIMER_PME_EN BIT(30) +#define ALX_ACER_TIMER_MATCH BIT(29) +#define ALX_ACER_TIMER_THRES_MASK 0x1FFFF +#define ALX_ACER_TIMER_THRES_SHIFT 0 +#define ALX_ACER_TIMER_THRES_DEF 1 + +/* RSS definitions */ +#define ALX_RSS_KEY0 0x14B0 +#define ALX_RSS_KEY1 0x14B4 +#define ALX_RSS_KEY2 0x14B8 +#define ALX_RSS_KEY3 0x14BC +#define ALX_RSS_KEY4 0x14C0 +#define ALX_RSS_KEY5 0x14C4 +#define ALX_RSS_KEY6 0x14C8 +#define ALX_RSS_KEY7 0x14CC +#define ALX_RSS_KEY8 0x14D0 +#define ALX_RSS_KEY9 0x14D4 + +#define ALX_RSS_IDT_TBL0 0x1B00 + +#define ALX_MSI_MAP_TBL1 0x15D0 +#define ALX_MSI_MAP_TBL1_TXQ1_SHIFT 20 +#define ALX_MSI_MAP_TBL1_TXQ0_SHIFT 16 +#define ALX_MSI_MAP_TBL1_RXQ3_SHIFT 12 +#define ALX_MSI_MAP_TBL1_RXQ2_SHIFT 8 +#define ALX_MSI_MAP_TBL1_RXQ1_SHIFT 4 +#define ALX_MSI_MAP_TBL1_RXQ0_SHIFT 0 + +#define ALX_MSI_MAP_TBL2 0x15D8 +#define ALX_MSI_MAP_TBL2_TXQ3_SHIFT 20 +#define ALX_MSI_MAP_TBL2_TXQ2_SHIFT 16 +#define ALX_MSI_MAP_TBL2_RXQ7_SHIFT 12 +#define ALX_MSI_MAP_TBL2_RXQ6_SHIFT 8 +#define ALX_MSI_MAP_TBL2_RXQ5_SHIFT 4 +#define ALX_MSI_MAP_TBL2_RXQ4_SHIFT 0 + +#define ALX_MSI_ID_MAP 0x15D4 + +#define ALX_MSI_RETRANS_TIMER 0x1920 +/* bit16: 1:line,0:standard */ +#define ALX_MSI_MASK_SEL_LINE BIT(16) +#define ALX_MSI_RETRANS_TM_MASK 0xFFFF +#define ALX_MSI_RETRANS_TM_SHIFT 0 + +/* CR DMA ctrl */ + +/* TX QoS */ +#define ALX_WRR 0x1938 +#define ALX_WRR_PRI_MASK 0x3 +#define ALX_WRR_PRI_SHIFT 29 +#define ALX_WRR_PRI_RESTRICT_NONE 3 +#define ALX_WRR_PRI3_MASK 0x1F +#define ALX_WRR_PRI3_SHIFT 24 +#define ALX_WRR_PRI2_MASK 0x1F +#define ALX_WRR_PRI2_SHIFT 16 +#define ALX_WRR_PRI1_MASK 0x1F +#define ALX_WRR_PRI1_SHIFT 8 +#define ALX_WRR_PRI0_MASK 0x1F +#define ALX_WRR_PRI0_SHIFT 0 + +#define ALX_HQTPD 0x193C +#define ALX_HQTPD_BURST_EN BIT(31) +#define ALX_HQTPD_Q3_NUMPREF_MASK 0xF +#define ALX_HQTPD_Q3_NUMPREF_SHIFT 8 +#define ALX_HQTPD_Q2_NUMPREF_MASK 0xF +#define ALX_HQTPD_Q2_NUMPREF_SHIFT 4 +#define ALX_HQTPD_Q1_NUMPREF_MASK 0xF +#define ALX_HQTPD_Q1_NUMPREF_SHIFT 0 + +#define ALX_MISC 0x19C0 +#define ALX_MISC_PSW_OCP_MASK 0x7 +#define ALX_MISC_PSW_OCP_SHIFT 21 +#define ALX_MISC_PSW_OCP_DEF 0x7 +#define ALX_MISC_ISO_EN BIT(12) +#define ALX_MISC_INTNLOSC_OPEN BIT(3) + +#define ALX_MSIC2 0x19C8 +#define ALX_MSIC2_CALB_START BIT(0) + +#define ALX_MISC3 0x19CC +/* bit1: 1:Software control 25M */ +#define ALX_MISC3_25M_BY_SW BIT(1) +/* bit0: 25M switch to intnl OSC */ +#define ALX_MISC3_25M_NOTO_INTNL BIT(0) + +/* MSIX tbl in memory space */ +#define ALX_MSIX_ENTRY_BASE 0x2000 + +/********************* PHY regs definition ***************************/ + +/* PHY Specific Status Register */ +#define ALX_MII_GIGA_PSSR 0x11 +#define ALX_GIGA_PSSR_SPD_DPLX_RESOLVED 0x0800 +#define ALX_GIGA_PSSR_DPLX 0x2000 +#define ALX_GIGA_PSSR_SPEED 0xC000 +#define ALX_GIGA_PSSR_10MBS 0x0000 +#define ALX_GIGA_PSSR_100MBS 0x4000 +#define ALX_GIGA_PSSR_1000MBS 0x8000 + +/* PHY Interrupt Enable Register */ +#define ALX_MII_IER 0x12 +#define ALX_IER_LINK_UP 0x0400 +#define ALX_IER_LINK_DOWN 0x0800 + +/* PHY Interrupt Status Register */ +#define ALX_MII_ISR 0x13 + +#define ALX_MII_DBG_ADDR 0x1D +#define ALX_MII_DBG_DATA 0x1E + +/***************************** debug port *************************************/ + +#define ALX_MIIDBG_ANACTRL 0x00 +#define ALX_ANACTRL_DEF 0x02EF + +#define ALX_MIIDBG_SYSMODCTRL 0x04 +/* en half bias */ +#define ALX_SYSMODCTRL_IECHOADJ_DEF 0xBB8B + +#define ALX_MIIDBG_SRDSYSMOD 0x05 +#define ALX_SRDSYSMOD_DEEMP_EN 0x0040 +#define ALX_SRDSYSMOD_DEF 0x2C46 + +#define ALX_MIIDBG_HIBNEG 0x0B +#define ALX_HIBNEG_PSHIB_EN 0x8000 +#define ALX_HIBNEG_HIB_PSE 0x1000 +#define ALX_HIBNEG_DEF 0xBC40 +#define ALX_HIBNEG_NOHIB (ALX_HIBNEG_DEF & \ + ~(ALX_HIBNEG_PSHIB_EN | ALX_HIBNEG_HIB_PSE)) + +#define ALX_MIIDBG_TST10BTCFG 0x12 +#define ALX_TST10BTCFG_DEF 0x4C04 + +#define ALX_MIIDBG_AZ_ANADECT 0x15 +#define ALX_AZ_ANADECT_DEF 0x3220 +#define ALX_AZ_ANADECT_LONG 0x3210 + +#define ALX_MIIDBG_MSE16DB 0x18 +#define ALX_MSE16DB_UP 0x05EA +#define ALX_MSE16DB_DOWN 0x02EA + +#define ALX_MIIDBG_MSE20DB 0x1C +#define ALX_MSE20DB_TH_MASK 0x7F +#define ALX_MSE20DB_TH_SHIFT 2 +#define ALX_MSE20DB_TH_DEF 0x2E +#define ALX_MSE20DB_TH_HI 0x54 + +#define ALX_MIIDBG_AGC 0x23 +#define ALX_AGC_2_VGA_MASK 0x3FU +#define ALX_AGC_2_VGA_SHIFT 8 +#define ALX_AGC_LONG1G_LIMT 40 +#define ALX_AGC_LONG100M_LIMT 44 + +#define ALX_MIIDBG_LEGCYPS 0x29 +#define ALX_LEGCYPS_EN 0x8000 +#define ALX_LEGCYPS_DEF 0x129D + +#define ALX_MIIDBG_TST100BTCFG 0x36 +#define ALX_TST100BTCFG_DEF 0xE12C + +#define ALX_MIIDBG_GREENCFG 0x3B +#define ALX_GREENCFG_DEF 0x7078 + +#define ALX_MIIDBG_GREENCFG2 0x3D +#define ALX_GREENCFG2_BP_GREEN 0x8000 +#define ALX_GREENCFG2_GATE_DFSE_EN 0x0080 + +/******* dev 3 *********/ +#define ALX_MIIEXT_PCS 3 + +#define ALX_MIIEXT_CLDCTRL3 0x8003 +#define ALX_CLDCTRL3_BP_CABLE1TH_DET_GT 0x8000 + +#define ALX_MIIEXT_CLDCTRL5 0x8005 +#define ALX_CLDCTRL5_BP_VD_HLFBIAS 0x4000 + +#define ALX_MIIEXT_CLDCTRL6 0x8006 +#define ALX_CLDCTRL6_CAB_LEN_MASK 0xFF +#define ALX_CLDCTRL6_CAB_LEN_SHIFT 0 +#define ALX_CLDCTRL6_CAB_LEN_SHORT1G 116 +#define ALX_CLDCTRL6_CAB_LEN_SHORT100M 152 + +#define ALX_MIIEXT_VDRVBIAS 0x8062 +#define ALX_VDRVBIAS_DEF 0x3 + +/********* dev 7 **********/ +#define ALX_MIIEXT_ANEG 7 + +#define ALX_MIIEXT_LOCAL_EEEADV 0x3C +#define ALX_LOCAL_EEEADV_1000BT 0x0004 +#define ALX_LOCAL_EEEADV_100BT 0x0002 + +#define ALX_MIIEXT_AFE 0x801A +#define ALX_AFE_10BT_100M_TH 0x0040 + +#define ALX_MIIEXT_S3DIG10 0x8023 +/* bit0: 1:bypass 10BT rx fifo, 0:original 10BT rx */ +#define ALX_MIIEXT_S3DIG10_SL 0x0001 +#define ALX_MIIEXT_S3DIG10_DEF 0 + +#define ALX_MIIEXT_NLP78 0x8027 +#define ALX_MIIEXT_NLP78_120M_DEF 0x8A05 + +#endif -- cgit v0.10.2 From ab8e99d276d4b72d1532bda4423b14c9e2ce053c Mon Sep 17 00:00:00 2001 From: Sebastian Siewior Date: Mon, 17 Jun 2013 19:31:52 +0200 Subject: net: cpsw: check for cpts pointer after its allocation after priv->cpts got allocated then this pointer should check to determine if the allocation succeeded or not. Cc: Mugunthan V N Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 21a5b29..2fd69db 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1679,7 +1679,7 @@ static int cpsw_probe(struct platform_device *pdev) priv->rx_packet_max = max(rx_packet_max, 128); priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL); priv->irq_enabled = true; - if (!ndev) { + if (!priv->cpts) { pr_err("error allocating cpts\n"); goto clean_ndev_ret; } -- cgit v0.10.2 From 14c14414d157ea851119c96c61a17306a2b4a035 Mon Sep 17 00:00:00 2001 From: Maxim Patlasov Date: Thu, 13 Jun 2013 12:16:39 +0400 Subject: fuse: hold i_mutex in fuse_file_fallocate() Changing size of a file on server and local update (fuse_write_update_size) should be always protected by inode->i_mutex. Otherwise a race like this is possible: 1. Process 'A' calls fallocate(2) to extend file (~FALLOC_FL_KEEP_SIZE). fuse_file_fallocate() sends FUSE_FALLOCATE request to the server. 2. Process 'B' calls ftruncate(2) shrinking the file. fuse_do_setattr() sends shrinking FUSE_SETATTR request to the server and updates local i_size by i_size_write(inode, outarg.attr.size). 3. Process 'A' resumes execution of fuse_file_fallocate() and calls fuse_write_update_size(inode, offset + length). But 'offset + length' was obsoleted by ftruncate from previous step. Changed in v2 (thanks Brian and Anand for suggestions): - made relation between mutex_lock() and fuse_set_nowrite(inode) more explicit and clear. - updated patch description to use ftruncate(2) in example Signed-off-by: Maxim V. Patlasov Reviewed-by: Brian Foster Signed-off-by: Miklos Szeredi diff --git a/fs/fuse/file.c b/fs/fuse/file.c index e570081..35f2810 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2470,13 +2470,16 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, .mode = mode }; int err; + bool lock_inode = !(mode & FALLOC_FL_KEEP_SIZE) || + (mode & FALLOC_FL_PUNCH_HOLE); if (fc->no_fallocate) return -EOPNOTSUPP; - if (mode & FALLOC_FL_PUNCH_HOLE) { + if (lock_inode) { mutex_lock(&inode->i_mutex); - fuse_set_nowrite(inode); + if (mode & FALLOC_FL_PUNCH_HOLE) + fuse_set_nowrite(inode); } req = fuse_get_req_nopages(fc); @@ -2511,8 +2514,9 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, fuse_invalidate_attr(inode); out: - if (mode & FALLOC_FL_PUNCH_HOLE) { - fuse_release_nowrite(inode); + if (lock_inode) { + if (mode & FALLOC_FL_PUNCH_HOLE) + fuse_release_nowrite(inode); mutex_unlock(&inode->i_mutex); } -- cgit v0.10.2 From 788dfcacacfbdd51f9c92065bd8e136686f07a29 Mon Sep 17 00:00:00 2001 From: Fernando Luis Vazquez Cao Date: Mon, 17 Jun 2013 11:28:03 +0900 Subject: vlan: restore ethtool ABI to control VLAN hardware acceleration As part of the push to add 802.1ad server provider tagging support to the kernel the VLAN features flags were renamed. Unfortunately the kernel name for the VLAN hardware acceleration features that the kernel shows user space was included in the rename, which broke ethtool (txvlan and rxvlan options do not work). This patch restores the original names, i.e. the original ABI. If we wanted to make clear to users that we are refering to CTAGs we can always change ethtool's short_name and long_name for these features (for example something along the lines of txvlan -> txvlan-ctag, tx-vlan-offload -> tx-vlan-ctag-offload). Cc: Patrick McHardy Cc: David S. Miller Cc: netdev@vger.kernel.org Signed-off-by: Fernando Luis Vazquez Cao Reviewed-by: Ben Hutchings Signed-off-by: David S. Miller diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 22efdaa..ce91766 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -60,10 +60,10 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6", [NETIF_F_HIGHDMA_BIT] = "highdma", [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist", - [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-ctag-hw-insert", + [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert", - [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-ctag-hw-parse", - [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-ctag-filter", + [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse", + [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter", [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert", [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse", [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter", -- cgit v0.10.2 From 32de868cbc6bee010d2cee95b5071b25ecbec8c3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Linus=20L=C3=BCssing?= Date: Sun, 16 Jun 2013 23:20:34 +0200 Subject: bridge: fix switched interval for MLD Query types MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit General Queries (the one with the Multicast Address field set to zero / '::') are supposed to have a Maximum Response Delay of [Query Response Interval], while for Multicast-Address-Specific Queries it is [Last Listener Query Interval] - not the other way round. (see RFC2710, section 7.3+7.8) Signed-off-by: Linus Lüssing Signed-off-by: David S. Miller diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 81f2389..d6448e3 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -465,8 +465,9 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br, skb_set_transport_header(skb, skb->len); mldq = (struct mld_msg *) icmp6_hdr(skb); - interval = ipv6_addr_any(group) ? br->multicast_last_member_interval : - br->multicast_query_response_interval; + interval = ipv6_addr_any(group) ? + br->multicast_query_response_interval : + br->multicast_last_member_interval; mldq->mld_type = ICMPV6_MGM_QUERY; mldq->mld_code = 0; -- cgit v0.10.2 From 33be081a812098567898bbe23b581460331a986f Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Fri, 31 May 2013 03:27:55 +0200 Subject: ipv6: ndisc: fix ndisc_send_redirect writing to the wrong skb Since some refactoring in 5f5a011, ndisc_send_redirect called ndisc_fill_redirect_hdr_option on the wrong skb, leading to data corruption or in the worst case a panic when the skb_put failed. Signed-off-by: Matthias Schiffer Reviewed-by: Cong Wang Signed-off-by: David S. Miller diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 2712ab2..ca4ffcc 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1493,7 +1493,7 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target) */ if (ha) - ndisc_fill_addr_option(skb, ND_OPT_TARGET_LL_ADDR, ha); + ndisc_fill_addr_option(buff, ND_OPT_TARGET_LL_ADDR, ha); /* * build redirect option and copy skb over to the new packet. -- cgit v0.10.2 From 764bcbc5a6d7a2f3e75c9f0e4caa984e2926e346 Mon Sep 17 00:00:00 2001 From: "Zhanghaoyu (A)" Date: Fri, 14 Jun 2013 07:36:13 +0000 Subject: KVM: x86: remove vcpu's CPL check in host-invoked XCR set __kvm_set_xcr function does the CPL check when set xcr. __kvm_set_xcr is called in two flows, one is invoked by guest, call stack shown as below, handle_xsetbv(or xsetbv_interception) kvm_set_xcr __kvm_set_xcr the other one is invoked by host, for example during system reset: kvm_arch_vcpu_ioctl kvm_vcpu_ioctl_x86_set_xcrs __kvm_set_xcr The former does need the CPL check, but the latter does not. Cc: stable@vger.kernel.org Signed-off-by: Zhang Haoyu [Tweaks to commit message. - Paolo] Signed-off-by: Paolo Bonzini diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 094b5d9..e8ba99c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -582,8 +582,6 @@ int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr) if (index != XCR_XFEATURE_ENABLED_MASK) return 1; xcr0 = xcr; - if (kvm_x86_ops->get_cpl(vcpu) != 0) - return 1; if (!(xcr0 & XSTATE_FP)) return 1; if ((xcr0 & XSTATE_YMM) && !(xcr0 & XSTATE_SSE)) @@ -597,7 +595,8 @@ int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr) int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr) { - if (__kvm_set_xcr(vcpu, index, xcr)) { + if (kvm_x86_ops->get_cpl(vcpu) != 0 || + __kvm_set_xcr(vcpu, index, xcr)) { kvm_inject_gp(vcpu, 0); return 1; } -- cgit v0.10.2 From d8d386c10630d8f7837700f4c466443d49e12cc0 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 13 Jun 2013 13:17:01 -0700 Subject: x86, mtrr: Fix original mtrr range get for mtrr_cleanup Joshua reported: Commit cd7b304dfaf1 (x86, range: fix missing merge during add range) broke mtrr cleanup on his setup in 3.9.5. corresponding commit in upstream is fbe06b7bae7c. *BAD*gran_size: 64K chunk_size: 16M num_reg: 6 lose cover RAM: -0G https://bugzilla.kernel.org/show_bug.cgi?id=59491 So it rejects new var mtrr layout. It turns out we have some problem with initial mtrr range retrieval. The current sequence is: x86_get_mtrr_mem_range ==> bunchs of add_range_with_merge ==> bunchs of subract_range ==> clean_sort_range add_range_with_merge for [0,1M) sort_range() add_range_with_merge could have blank slots, so we can not just sort only, that will have final result have extra blank slot in head. So move that calling add_range_with_merge for [0,1M), with that we could avoid extra clean_sort_range calling. Reported-by: Joshua Covington Tested-by: Joshua Covington Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1371154622-8929-2-git-send-email-yinghai@kernel.org Cc: v3.9 Signed-off-by: H. Peter Anvin diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c index 35ffda5..5f90b85 100644 --- a/arch/x86/kernel/cpu/mtrr/cleanup.c +++ b/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -714,15 +714,15 @@ int __init mtrr_cleanup(unsigned address_bits) if (mtrr_tom2) x_remove_size = (mtrr_tom2 >> PAGE_SHIFT) - x_remove_base; - nr_range = x86_get_mtrr_mem_range(range, 0, x_remove_base, x_remove_size); /* * [0, 1M) should always be covered by var mtrr with WB * and fixed mtrrs should take effect before var mtrr for it: */ - nr_range = add_range_with_merge(range, RANGE_NUM, nr_range, 0, + nr_range = add_range_with_merge(range, RANGE_NUM, 0, 0, 1ULL<<(20 - PAGE_SHIFT)); - /* Sort the ranges: */ - sort_range(range, nr_range); + /* add from var mtrr at last */ + nr_range = x86_get_mtrr_mem_range(range, nr_range, + x_remove_base, x_remove_size); range_sums = sum_ranges(range, nr_range); printk(KERN_INFO "total RAM covered: %ldM\n", -- cgit v0.10.2 From 0541881502a1276149889fe468662ff6a8fc8f6d Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 13 Jun 2013 13:17:02 -0700 Subject: range: Do not add new blank slot with add_range_with_merge Joshua reported: Commit cd7b304dfaf1 (x86, range: fix missing merge during add range) broke mtrr cleanup on his setup in 3.9.5. corresponding commit in upstream is fbe06b7bae7c. The reason is add_range_with_merge could generate blank spot. We could avoid that by searching new expanded start/end, that new range should include all connected ranges in range array. At last add the new expanded start/end to the range array. Also move up left array so do not add new blank slot in the range array. -v2: move left array to avoid enhance add_range() -v3: include fix from Joshua about memmove declaring when DYN_DEBUG is used. Reported-by: Joshua Covington Tested-by: Joshua Covington Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1371154622-8929-3-git-send-email-yinghai@kernel.org Cc: v3.9 Signed-off-by: H. Peter Anvin diff --git a/kernel/range.c b/kernel/range.c index eb911db..322ea8e 100644 --- a/kernel/range.c +++ b/kernel/range.c @@ -4,7 +4,7 @@ #include #include #include - +#include #include int add_range(struct range *range, int az, int nr_range, u64 start, u64 end) @@ -32,9 +32,8 @@ int add_range_with_merge(struct range *range, int az, int nr_range, if (start >= end) return nr_range; - /* Try to merge it with old one: */ + /* get new start/end: */ for (i = 0; i < nr_range; i++) { - u64 final_start, final_end; u64 common_start, common_end; if (!range[i].end) @@ -45,14 +44,16 @@ int add_range_with_merge(struct range *range, int az, int nr_range, if (common_start > common_end) continue; - final_start = min(range[i].start, start); - final_end = max(range[i].end, end); + /* new start/end, will add it back at last */ + start = min(range[i].start, start); + end = max(range[i].end, end); - /* clear it and add it back for further merge */ - range[i].start = 0; - range[i].end = 0; - return add_range_with_merge(range, az, nr_range, - final_start, final_end); + memmove(&range[i], &range[i + 1], + (nr_range - (i + 1)) * sizeof(range[i])); + range[nr_range - 1].start = 0; + range[nr_range - 1].end = 0; + nr_range--; + i--; } /* Need to add it: */ -- cgit v0.10.2 From 035978beaf79e3bd0c4f6308e8c8ce5067e26b9d Mon Sep 17 00:00:00 2001 From: George Spelvin Date: Mon, 17 Jun 2013 01:45:50 -0400 Subject: usb: phy: Improve Kconfig help for CONFIG_USB_PHY The previous text confused users by not describing the very common (e.g. x86 PC) sitations where no PHY driver is necessary. Signed-off-by: George Spelvin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 7ef3eb8..2311b1e 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -4,11 +4,17 @@ menuconfig USB_PHY bool "USB Physical Layer drivers" help - USB controllers (those which are host, device or DRD) need a - device to handle the physical layer signalling, commonly called - a PHY. + Most USB controllers have the physical layer signalling part + (commonly called a PHY) built in. However, dual-role devices + (a.k.a. USB on-the-go) which support being USB master or slave + with the same connector often use an external PHY. - The following drivers add support for such PHY devices. + The drivers in this submenu add support for such PHY devices. + They are not needed for standard master-only (or the vast + majority of slave-only) USB interfaces. + + If you're not sure if this applies to you, it probably doesn't; + say N here. if USB_PHY -- cgit v0.10.2 From 875979368eb4cfecff9f0e97625b90cc6009269d Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Sat, 15 Jun 2013 16:36:38 +0800 Subject: firmware loader: fix use-after-free by double abort fw_priv->buf is accessed in both request_firmware_load() and writing to sysfs file of 'loading' context, but not protected by 'fw_lock' entirely. The patch makes sure that access on 'fw_priv->buf' is protected by the lock. So fixes the double abort problem reported by nirinA raseliarison: http://lkml.org/lkml/2013/6/14/188 Reported-and-tested-by: nirinA raseliarison Cc: Guenter Roeck Cc: Bjorn Helgaas Cc: stable # 3.9 Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 4b1f926..01e2103 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -450,8 +450,18 @@ static void fw_load_abort(struct firmware_priv *fw_priv) { struct firmware_buf *buf = fw_priv->buf; + /* + * There is a small window in which user can write to 'loading' + * between loading done and disappearance of 'loading' + */ + if (test_bit(FW_STATUS_DONE, &buf->status)) + return; + set_bit(FW_STATUS_ABORT, &buf->status); complete_all(&buf->completion); + + /* avoid user action after loading abort */ + fw_priv->buf = NULL; } #define is_fw_load_aborted(buf) \ @@ -528,7 +538,12 @@ static ssize_t firmware_loading_show(struct device *dev, struct device_attribute *attr, char *buf) { struct firmware_priv *fw_priv = to_firmware_priv(dev); - int loading = test_bit(FW_STATUS_LOADING, &fw_priv->buf->status); + int loading = 0; + + mutex_lock(&fw_lock); + if (fw_priv->buf) + loading = test_bit(FW_STATUS_LOADING, &fw_priv->buf->status); + mutex_unlock(&fw_lock); return sprintf(buf, "%d\n", loading); } @@ -570,12 +585,12 @@ static ssize_t firmware_loading_store(struct device *dev, const char *buf, size_t count) { struct firmware_priv *fw_priv = to_firmware_priv(dev); - struct firmware_buf *fw_buf = fw_priv->buf; + struct firmware_buf *fw_buf; int loading = simple_strtol(buf, NULL, 10); int i; mutex_lock(&fw_lock); - + fw_buf = fw_priv->buf; if (!fw_buf) goto out; @@ -777,10 +792,6 @@ static void firmware_class_timeout_work(struct work_struct *work) struct firmware_priv, timeout_work.work); mutex_lock(&fw_lock); - if (test_bit(FW_STATUS_DONE, &(fw_priv->buf->status))) { - mutex_unlock(&fw_lock); - return; - } fw_load_abort(fw_priv); mutex_unlock(&fw_lock); } @@ -861,8 +872,6 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent, cancel_delayed_work_sync(&fw_priv->timeout_work); - fw_priv->buf = NULL; - device_remove_file(f_dev, &dev_attr_loading); err_del_bin_attr: device_remove_bin_file(f_dev, &firmware_attr_data); -- cgit v0.10.2 From 5548f98c46538d1da04eff179a52e50537d11465 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 18 Jun 2013 17:29:44 +0300 Subject: spi/pxa2xx: use GFP_ATOMIC in sg table allocation pxa2xx_spi_map_dma_buffer() gets called in tasklet context so we can't sleep when we allocate a new sg table. Use GFP_ATOMIC here instead. Signed-off-by: Mika Westerberg Signed-off-by: Mark Brown Cc: stable@vger.kernel.org diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c index c735c5a..6427600 100644 --- a/drivers/spi/spi-pxa2xx-dma.c +++ b/drivers/spi/spi-pxa2xx-dma.c @@ -59,7 +59,7 @@ static int pxa2xx_spi_map_dma_buffer(struct driver_data *drv_data, int ret; sg_free_table(sgt); - ret = sg_alloc_table(sgt, nents, GFP_KERNEL); + ret = sg_alloc_table(sgt, nents, GFP_ATOMIC); if (ret) return ret; } -- cgit v0.10.2 From 91ea8207168793b365322be3c90a4ee9e8b03ed4 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Wed, 5 Jun 2013 20:50:01 +0000 Subject: parisc: fix kernel BUG at arch/parisc/include/asm/mmzone.h:50 (part 2) Make sure that we really return -1 (instead of 0x00ff) as node id for page frame numbers which are not physically available. This finally fixes the kernel panic when running cat /proc/kpageflags /proc/kpagecount. Theoretically this patch now limits the number of physical memory ranges to 127 instead of 254, but currently we have MAX_PHYSMEM_RANGES hardcoded to 8 which is sufficient for all existing parisc machines. Signed-off-by: Helge Deller diff --git a/arch/parisc/include/asm/mmzone.h b/arch/parisc/include/asm/mmzone.h index cc50d33..b6b34a0 100644 --- a/arch/parisc/include/asm/mmzone.h +++ b/arch/parisc/include/asm/mmzone.h @@ -27,7 +27,7 @@ extern struct node_map_data node_data[]; #define PFNNID_SHIFT (30 - PAGE_SHIFT) #define PFNNID_MAP_MAX 512 /* support 512GB */ -extern unsigned char pfnnid_map[PFNNID_MAP_MAX]; +extern signed char pfnnid_map[PFNNID_MAP_MAX]; #ifndef CONFIG_64BIT #define pfn_is_io(pfn) ((pfn & (0xf0000000UL >> PAGE_SHIFT)) == (0xf0000000UL >> PAGE_SHIFT)) @@ -46,7 +46,7 @@ static inline int pfn_to_nid(unsigned long pfn) i = pfn >> PFNNID_SHIFT; BUG_ON(i >= ARRAY_SIZE(pfnnid_map)); - return (int)pfnnid_map[i]; + return pfnnid_map[i]; } static inline int pfn_valid(int pfn) diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index 1c96564..505b56c 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -47,7 +47,7 @@ pte_t pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((__section__ (".data..vm0.pt #ifdef CONFIG_DISCONTIGMEM struct node_map_data node_data[MAX_NUMNODES] __read_mostly; -unsigned char pfnnid_map[PFNNID_MAP_MAX] __read_mostly; +signed char pfnnid_map[PFNNID_MAP_MAX] __read_mostly; #endif static struct resource data_resource = { -- cgit v0.10.2 From 9a66d1869d90f13fbaf83dcce5b1aeec86fbc699 Mon Sep 17 00:00:00 2001 From: Thomas Bogendoerfer Date: Sun, 9 Jun 2013 23:00:21 +0200 Subject: parisc: fix serial ports on C8000 workstation The C8000 workstation (64 bit kernel only) has a somewhat different serial port configuration than other models. Thomas Bogendoerfer sent a patch to fix this in September 2010, which was now minimally modified by me. Signed-off-by: Thomas Bogendoerfer Signed-off-by: Helge Deller diff --git a/arch/parisc/kernel/hardware.c b/arch/parisc/kernel/hardware.c index 9e2d2e4..8722756 100644 --- a/arch/parisc/kernel/hardware.c +++ b/arch/parisc/kernel/hardware.c @@ -1205,6 +1205,7 @@ static struct hp_hardware hp_hardware_list[] = { {HPHW_FIO, 0x004, 0x00320, 0x0, "Metheus Frame Buffer"}, {HPHW_FIO, 0x004, 0x00340, 0x0, "BARCO CX4500 VME Grphx Cnsl"}, {HPHW_FIO, 0x004, 0x00360, 0x0, "Hughes TOG VME FDDI"}, + {HPHW_FIO, 0x076, 0x000AD, 0x00, "Crestone Peak RS-232"}, {HPHW_IOA, 0x185, 0x0000B, 0x00, "Java BC Summit Port"}, {HPHW_IOA, 0x1FF, 0x0000B, 0x00, "Hitachi Ghostview Summit Port"}, {HPHW_IOA, 0x580, 0x0000B, 0x10, "U2-IOA BC Runway Port"}, diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c index 9544cdc..e79e006 100644 --- a/drivers/parisc/iosapic.c +++ b/drivers/parisc/iosapic.c @@ -811,6 +811,70 @@ int iosapic_fixup_irq(void *isi_obj, struct pci_dev *pcidev) return pcidev->irq; } +static struct iosapic_info *first_isi = NULL; + +#ifdef CONFIG_64BIT +int iosapic_serial_irq(int num) +{ + struct iosapic_info *isi = first_isi; + struct irt_entry *irte = NULL; /* only used if PAT PDC */ + struct vector_info *vi; + int isi_line; /* line used by device */ + + /* lookup IRT entry for isi/slot/pin set */ + irte = &irt_cell[num]; + + DBG_IRT("iosapic_serial_irq(): irte %p %x %x %x %x %x %x %x %x\n", + irte, + irte->entry_type, + irte->entry_length, + irte->polarity_trigger, + irte->src_bus_irq_devno, + irte->src_bus_id, + irte->src_seg_id, + irte->dest_iosapic_intin, + (u32) irte->dest_iosapic_addr); + isi_line = irte->dest_iosapic_intin; + + /* get vector info for this input line */ + vi = isi->isi_vector + isi_line; + DBG_IRT("iosapic_serial_irq: line %d vi 0x%p\n", isi_line, vi); + + /* If this IRQ line has already been setup, skip it */ + if (vi->irte) + goto out; + + vi->irte = irte; + + /* + * Allocate processor IRQ + * + * XXX/FIXME The txn_alloc_irq() code and related code should be + * moved to enable_irq(). That way we only allocate processor IRQ + * bits for devices that actually have drivers claiming them. + * Right now we assign an IRQ to every PCI device present, + * regardless of whether it's used or not. + */ + vi->txn_irq = txn_alloc_irq(8); + + if (vi->txn_irq < 0) + panic("I/O sapic: couldn't get TXN IRQ\n"); + + /* enable_irq() will use txn_* to program IRdT */ + vi->txn_addr = txn_alloc_addr(vi->txn_irq); + vi->txn_data = txn_alloc_data(vi->txn_irq); + + vi->eoi_addr = isi->addr + IOSAPIC_REG_EOI; + vi->eoi_data = cpu_to_le32(vi->txn_data); + + cpu_claim_irq(vi->txn_irq, &iosapic_interrupt_type, vi); + + out: + + return vi->txn_irq; +} +#endif + /* ** squirrel away the I/O Sapic Version @@ -877,6 +941,8 @@ void *iosapic_register(unsigned long hpa) vip->irqline = (unsigned char) cnt; vip->iosapic = isi; } + if (!first_isi) + first_isi = isi; return isi; } diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c index 097dff9..bb91b47 100644 --- a/drivers/tty/serial/8250/8250_gsc.c +++ b/drivers/tty/serial/8250/8250_gsc.c @@ -30,6 +30,12 @@ static int __init serial_init_chip(struct parisc_device *dev) unsigned long address; int err; +#ifdef CONFIG_64BIT + extern int iosapic_serial_irq(int cellnum); + if (!dev->irq && (dev->id.sversion == 0xad)) + dev->irq = iosapic_serial_irq(dev->mod_index-1); +#endif + if (!dev->irq) { /* We find some unattached serial ports by walking native * busses. These should be silently ignored. Otherwise, @@ -51,7 +57,8 @@ static int __init serial_init_chip(struct parisc_device *dev) memset(&uart, 0, sizeof(uart)); uart.port.iotype = UPIO_MEM; /* 7.272727MHz on Lasi. Assumed the same for Dino, Wax and Timi. */ - uart.port.uartclk = 7272727; + uart.port.uartclk = (dev->id.sversion != 0xad) ? + 7272727 : 1843200; uart.port.mapbase = address; uart.port.membase = ioremap_nocache(address, 16); uart.port.irq = dev->irq; @@ -73,6 +80,7 @@ static struct parisc_device_id serial_tbl[] = { { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 }, { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c }, { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d }, + { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x000ad }, { 0 } }; -- cgit v0.10.2 From 2cc7138f4347df939ce03f313e3d87794bab36f8 Mon Sep 17 00:00:00 2001 From: Thomas Bogendoerfer Date: Fri, 14 Jun 2013 09:05:41 +0200 Subject: parisc: provide pci_mmap_page_range() for parisc pci_mmap_page_range() is needed for X11-server support on C8000 with ATI FireGL card. Signed-off-by Thomas Bogendoerfer Signed-off-by: Helge Deller diff --git a/arch/parisc/include/asm/pci.h b/arch/parisc/include/asm/pci.h index 3234f49..4651540 100644 --- a/arch/parisc/include/asm/pci.h +++ b/arch/parisc/include/asm/pci.h @@ -225,4 +225,9 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) return channel ? 15 : 14; } +#define HAVE_PCI_MMAP + +extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, + enum pci_mmap_state mmap_state, int write_combine); + #endif /* __ASM_PARISC_PCI_H */ diff --git a/arch/parisc/kernel/pci.c b/arch/parisc/kernel/pci.c index 6030905..64f2764 100644 --- a/arch/parisc/kernel/pci.c +++ b/arch/parisc/kernel/pci.c @@ -220,6 +220,33 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res, } +int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, + enum pci_mmap_state mmap_state, int write_combine) +{ + unsigned long prot; + + /* + * I/O space can be accessed via normal processor loads and stores on + * this platform but for now we elect not to do this and portable + * drivers should not do this anyway. + */ + if (mmap_state == pci_mmap_io) + return -EINVAL; + + if (write_combine) + return -EINVAL; + + /* + * Ignore write-combine; for now only return uncached mappings. + */ + prot = pgprot_val(vma->vm_page_prot); + prot |= _PAGE_NO_CACHE; + vma->vm_page_prot = __pgprot(prot); + + return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, + vma->vm_end - vma->vm_start, vma->vm_page_prot); +} + /* * A driver is enabling the device. We make sure that all the appropriate * bits are set to allow the device to operate as the driver is expecting. -- cgit v0.10.2 From d65ea48dc61ffdf6cd7f25b4c319bbd68015e018 Mon Sep 17 00:00:00 2001 From: John David Anglin Date: Sun, 2 Jun 2013 12:21:48 -0400 Subject: parisc: Use unshadowed index register for flush instructions in flush_dcache_page_asm and flush_icache_page_asm The comment at the start of pacache.S states that the base and index registers used for fdc,fic, and pdc instructions should not use shadowed registers. Although this is probably unnecessary for tmpalias flushes, there is also no reason not to comply. Signed-off-by: John David Anglin Signed-off-by: Helge Deller diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S index 36d7f40..b743a80 100644 --- a/arch/parisc/kernel/pacache.S +++ b/arch/parisc/kernel/pacache.S @@ -860,7 +860,7 @@ ENTRY(flush_dcache_page_asm) #endif ldil L%dcache_stride, %r1 - ldw R%dcache_stride(%r1), %r1 + ldw R%dcache_stride(%r1), r31 #ifdef CONFIG_64BIT depdi,z 1, 63-PAGE_SHIFT,1, %r25 @@ -868,26 +868,26 @@ ENTRY(flush_dcache_page_asm) depwi,z 1, 31-PAGE_SHIFT,1, %r25 #endif add %r28, %r25, %r25 - sub %r25, %r1, %r25 - - -1: fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) - fdc,m %r1(%r28) + sub %r25, r31, %r25 + + +1: fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) + fdc,m r31(%r28) cmpb,COND(<<) %r28, %r25,1b - fdc,m %r1(%r28) + fdc,m r31(%r28) sync @@ -936,7 +936,7 @@ ENTRY(flush_icache_page_asm) #endif ldil L%icache_stride, %r1 - ldw R%icache_stride(%r1), %r1 + ldw R%icache_stride(%r1), %r31 #ifdef CONFIG_64BIT depdi,z 1, 63-PAGE_SHIFT,1, %r25 @@ -944,28 +944,28 @@ ENTRY(flush_icache_page_asm) depwi,z 1, 31-PAGE_SHIFT,1, %r25 #endif add %r28, %r25, %r25 - sub %r25, %r1, %r25 + sub %r25, %r31, %r25 /* fic only has the type 26 form on PA1.1, requiring an * explicit space specification, so use %sr4 */ -1: fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) - fic,m %r1(%sr4,%r28) +1: fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) + fic,m %r31(%sr4,%r28) cmpb,COND(<<) %r28, %r25,1b - fic,m %r1(%sr4,%r28) + fic,m %r31(%sr4,%r28) sync -- cgit v0.10.2 From d1603990ea626668c78527376d9ec084d634202d Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 18 Jun 2013 12:33:40 -0700 Subject: x86: fix build error and kconfig for ia32_emulation and binfmt Fix kconfig warning and build errors on x86_64 by selecting BINFMT_ELF when COMPAT_BINFMT_ELF is being selected. warning: (IA32_EMULATION) selects COMPAT_BINFMT_ELF which has unmet direct dependencies (COMPAT && BINFMT_ELF) fs/built-in.o: In function `elf_core_dump': compat_binfmt_elf.c:(.text+0x3e093): undefined reference to `elf_core_extra_phdrs' compat_binfmt_elf.c:(.text+0x3ebcd): undefined reference to `elf_core_extra_data_size' compat_binfmt_elf.c:(.text+0x3eddd): undefined reference to `elf_core_write_extra_phdrs' compat_binfmt_elf.c:(.text+0x3f004): undefined reference to `elf_core_write_extra_data' [ hpa: This was sent to me for -next but it is a low risk build fix ] Signed-off-by: Randy Dunlap Link: http://lkml.kernel.org/r/51C0B614.5000708@infradead.org Cc: Signed-off-by: H. Peter Anvin diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 685692c..fe120da 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2265,6 +2265,7 @@ source "fs/Kconfig.binfmt" config IA32_EMULATION bool "IA32 Emulation" depends on X86_64 + select BINFMT_ELF select COMPAT_BINFMT_ELF select HAVE_UID16 ---help--- -- cgit v0.10.2 From 06f3d7f973ec04290d86b7dd91b48d38d90433dc Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Tue, 18 Jun 2013 10:08:06 +0300 Subject: ipvs: SCTP ports should be writable in ICMP packets Make sure that SCTP ports are writable when embedded in ICMP from client, so that ip_vs_nat_icmp can translate them safely. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 05565d2..23b8eb5 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1442,7 +1442,8 @@ ignore_ipip: /* do the statistics and put it back */ ip_vs_in_stats(cp, skb); - if (IPPROTO_TCP == cih->protocol || IPPROTO_UDP == cih->protocol) + if (IPPROTO_TCP == cih->protocol || IPPROTO_UDP == cih->protocol || + IPPROTO_SCTP == cih->protocol) offset += 2 * sizeof(__u16); verdict = ip_vs_icmp_xmit(skb, cp, pp, offset, hooknum, &ciph); -- cgit v0.10.2 From ebc0bad4a05ad63979e8bc115cea3b8abdf814c7 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 19 Jun 2013 03:14:20 +0200 Subject: drm/prime: Honor requested file flags when exporting a buffer The DRM PRIME API passes file flags to the driver for the exported buffer. Honor them instead of hardcoding 0600. Signed-off-by: Laurent Pinchart Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index dcde352..5b7b911 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -190,8 +190,7 @@ struct dma_buf *drm_gem_prime_export(struct drm_device *dev, if (ret) return ERR_PTR(ret); } - return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, - 0600); + return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, flags); } EXPORT_SYMBOL(drm_gem_prime_export); -- cgit v0.10.2 From 7d753b0d387073be243f7ff52cc84dfa1391c1e7 Mon Sep 17 00:00:00 2001 From: Ping Cheng Date: Tue, 18 Jun 2013 23:14:25 -0700 Subject: Input: wacom - add a new stylus (0x100802) for Intuos5 and Cintiqs Signed-off-by: Ping Cheng Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 518282d..384fbcd 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -363,6 +363,7 @@ static int wacom_intuos_inout(struct wacom_wac *wacom) case 0x140802: /* Intuos4/5 13HD/24HD Classic Pen */ case 0x160802: /* Cintiq 13HD Pro Pen */ case 0x180802: /* DTH2242 Pen */ + case 0x100802: /* Intuos4/5 13HD/24HD General Pen */ wacom->tool[idx] = BTN_TOOL_PEN; break; @@ -401,6 +402,7 @@ static int wacom_intuos_inout(struct wacom_wac *wacom) case 0x10080c: /* Intuos4/5 13HD/24HD Art Pen Eraser */ case 0x16080a: /* Cintiq 13HD Pro Pen Eraser */ case 0x18080a: /* DTH2242 Eraser */ + case 0x10080a: /* Intuos4/5 13HD/24HD General Pen Eraser */ wacom->tool[idx] = BTN_TOOL_RUBBER; break; -- cgit v0.10.2 From be66227151c0cd4da536098c3ee07809101c6faa Mon Sep 17 00:00:00 2001 From: Shawn Joseph Date: Tue, 18 Jun 2013 23:07:45 -0700 Subject: Input: xpad - fix for "Mad Catz Street Fighter IV FightPad" controllers Added MAP_TRIGGERS_TO_BUTTONS for Mad Catz Street Fighter IV FightPad device. This controller model was already supported by the xpad driver, but none of the buttons work correctly without this change. Tested on kernel version 3.9.5. Signed-off-by: Shawn Joseph Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index d6cbfe9..fa061d4 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -137,7 +137,7 @@ static const struct xpad_device { { 0x0738, 0x4540, "Mad Catz Beat Pad", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX }, { 0x0738, 0x4556, "Mad Catz Lynx Wireless Controller", 0, XTYPE_XBOX }, { 0x0738, 0x4716, "Mad Catz Wired Xbox 360 Controller", 0, XTYPE_XBOX360 }, - { 0x0738, 0x4728, "Mad Catz Street Fighter IV FightPad", XTYPE_XBOX360 }, + { 0x0738, 0x4728, "Mad Catz Street Fighter IV FightPad", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 }, { 0x0738, 0x4738, "Mad Catz Wired Xbox 360 Controller (SFIV)", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 }, { 0x0738, 0x6040, "Mad Catz Beat Pad Pro", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX }, { 0x0738, 0xbeef, "Mad Catz JOYTECH NEO SE Advanced GamePad", XTYPE_XBOX360 }, -- cgit v0.10.2 From 4afe2156eb639e563d6ef0c2706b66ea400348b2 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Tue, 18 Jun 2013 14:33:58 +0200 Subject: can: usb_8dev: unregister netdev before free()ing The usb_8dev hardware has problems on some xhci USB hosts. The driver fails to read the firmware revision in the probe function. This leads to the following Oops: [ 3356.635912] kernel BUG at net/core/dev.c:5701! The driver tries to free the netdev, which has already been registered, without unregistering it. This patch fixes the problem by unregistering the netdev in the error path. Reported-by: Michael Olbrich Reviewed-by: Bernd Krumboeck Signed-off-by: Marc Kleine-Budde diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c index 6e15ef0..cbd388e 100644 --- a/drivers/net/can/usb/usb_8dev.c +++ b/drivers/net/can/usb/usb_8dev.c @@ -977,7 +977,7 @@ static int usb_8dev_probe(struct usb_interface *intf, err = usb_8dev_cmd_version(priv, &version); if (err) { netdev_err(netdev, "can't get firmware version\n"); - goto cleanup_cmd_msg_buffer; + goto cleanup_unregister_candev; } else { netdev_info(netdev, "firmware: %d.%d, hardware: %d.%d\n", @@ -989,6 +989,9 @@ static int usb_8dev_probe(struct usb_interface *intf, return 0; +cleanup_unregister_candev: + unregister_netdev(priv->netdev); + cleanup_cmd_msg_buffer: kfree(priv->cmd_msg_buffer); -- cgit v0.10.2 From 690cec8e70c211d1f5f6e520b21a68d0306173b6 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 14 Jun 2013 01:18:44 +0100 Subject: s390/irq: Only define synchronize_irq() on SMP In uniprocessor configurations, synchronize_irq() is defined in as a macro, and this function definition fails to compile. Reported-by: kbuild test robot Signed-off-by: Ben Hutchings Cc: stable@vger.kernel.org # 3.9 Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 408e866..dd3c199 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -312,6 +312,7 @@ void measurement_alert_subclass_unregister(void) } EXPORT_SYMBOL(measurement_alert_subclass_unregister); +#ifdef CONFIG_SMP void synchronize_irq(unsigned int irq) { /* @@ -320,6 +321,7 @@ void synchronize_irq(unsigned int irq) */ } EXPORT_SYMBOL_GPL(synchronize_irq); +#endif #ifndef CONFIG_PCI -- cgit v0.10.2 From 73e5a848426fae8e7f1f685389aa61d7a98e7c36 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Tue, 18 Jun 2013 17:32:26 +0200 Subject: s390/dma: fix mapping_error detection The map_page implementation of s390 returns DMA_ERROR_CODE in an error situation. Correctly test if a mapping was erroneous (DMA_ERROR_CODE is defined as ~0). Signed-off-by: Sebastian Ott Acked-by: Gerald Schaefer Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index 886ac7d..9f15a36 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -52,7 +52,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) if (dma_ops->mapping_error) return dma_ops->mapping_error(dev, dma_addr); - return (dma_addr == 0UL); + return (dma_addr == DMA_ERROR_CODE); } static inline void *dma_alloc_coherent(struct device *dev, size_t size, -- cgit v0.10.2 From 4026099a3118a1e038c48f3f85203a674938025b Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Tue, 18 Jun 2013 17:38:31 +0200 Subject: s390/dma: support debug_dma_mapping_error Without this patch drivers will get blamed (CONFIG_DMA_API_DEBUG=y) for not calling dma_mapping_error (even if they do). Signed-off-by: Sebastian Ott Acked-by: Gerald Schaefer Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index 9f15a36..2f8c1ab 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -50,6 +50,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { struct dma_map_ops *dma_ops = get_dma_ops(dev); + debug_dma_mapping_error(dev, dma_addr); if (dma_ops->mapping_error) return dma_ops->mapping_error(dev, dma_addr); return (dma_addr == DMA_ERROR_CODE); -- cgit v0.10.2 From eb064c3b49931dc73bba59887019c7f5cb97d322 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Tue, 18 Jun 2013 14:27:01 -0700 Subject: vxlan: fix check for migration of static entry The check introduced by: commit 26a41ae604381c5cc0caf1c3261ca6b298b5fe69 Author: stephen hemminger Date: Mon Jun 17 12:09:58 2013 -0700 vxlan: only migrate dynamic FDB entries was not correct because it is checking flag about type of FDB entry, rather than the state (dynamic versus static). The confusion arises because vxlan is reusing values from bridge, and bridge is reusing values from neighbour table, and easy to get lost in translation. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index dda997a..57325f3 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -579,7 +579,7 @@ static bool vxlan_snoop(struct net_device *dev, return false; /* Don't migrate static entries, drop packets */ - if (!(f->flags & NTF_SELF)) + if (f->state & NUD_NOARP) return true; if (net_ratelimit()) -- cgit v0.10.2 From c9036e9f3b2b77f678572260e1ef1075fcb08c36 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 19 Jun 2013 12:35:42 +0400 Subject: mconsole: we'd better initialize pos before passing it to vfs_read()... Signed-off-by: Al Viro diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c index d7d2185..3df3bd5 100644 --- a/arch/um/drivers/mconsole_kern.c +++ b/arch/um/drivers/mconsole_kern.c @@ -147,7 +147,7 @@ void mconsole_proc(struct mc_request *req) } do { - loff_t pos; + loff_t pos = file->f_pos; mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); len = vfs_read(file, buf, PAGE_SIZE - 1, &pos); -- cgit v0.10.2 From ccd847b2c101a7e5772d0463ac76f7c18732675a Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 7 May 2013 11:55:55 +0200 Subject: sparc: Switch to asm-generic/linkage.h Signed-off-by: Geert Uytterhoeven Signed-off-by: David S. Miller diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild index ff18e3c..7e4a97f 100644 --- a/arch/sparc/include/asm/Kbuild +++ b/arch/sparc/include/asm/Kbuild @@ -6,6 +6,7 @@ generic-y += cputime.h generic-y += div64.h generic-y += emergency-restart.h generic-y += exec.h +generic-y += linkage.h generic-y += local64.h generic-y += mutex.h generic-y += irq_regs.h diff --git a/arch/sparc/include/asm/linkage.h b/arch/sparc/include/asm/linkage.h deleted file mode 100644 index 291c2d0..0000000 --- a/arch/sparc/include/asm/linkage.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_LINKAGE_H -#define __ASM_LINKAGE_H - -/* Nothing to see here... */ - -#endif -- cgit v0.10.2 From dbebe0da64d0738a21221a7f9d29510b9f29d908 Mon Sep 17 00:00:00 2001 From: Denis Efremov Date: Thu, 9 May 2013 14:36:54 +0400 Subject: sparc: remove inline marking of EXPORT_SYMBOL functions EXPORT_SYMBOL and inline directives are contradictory to each other. The patch fixes this inconsistency. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Denis Efremov Signed-off-by: David S. Miller diff --git a/arch/sparc/prom/tree_64.c b/arch/sparc/prom/tree_64.c index 92204c3..bd1b2a3 100644 --- a/arch/sparc/prom/tree_64.c +++ b/arch/sparc/prom/tree_64.c @@ -39,7 +39,7 @@ inline phandle __prom_getchild(phandle node) return prom_node_to_node("child", node); } -inline phandle prom_getchild(phandle node) +phandle prom_getchild(phandle node) { phandle cnode; @@ -72,7 +72,7 @@ inline phandle __prom_getsibling(phandle node) return prom_node_to_node(prom_peer_name, node); } -inline phandle prom_getsibling(phandle node) +phandle prom_getsibling(phandle node) { phandle sibnode; @@ -89,7 +89,7 @@ EXPORT_SYMBOL(prom_getsibling); /* Return the length in bytes of property 'prop' at node 'node'. * Return -1 on error. */ -inline int prom_getproplen(phandle node, const char *prop) +int prom_getproplen(phandle node, const char *prop) { unsigned long args[6]; @@ -113,8 +113,8 @@ EXPORT_SYMBOL(prom_getproplen); * 'buffer' which has a size of 'bufsize'. If the acquisition * was successful the length will be returned, else -1 is returned. */ -inline int prom_getproperty(phandle node, const char *prop, - char *buffer, int bufsize) +int prom_getproperty(phandle node, const char *prop, + char *buffer, int bufsize) { unsigned long args[8]; int plen; @@ -141,7 +141,7 @@ EXPORT_SYMBOL(prom_getproperty); /* Acquire an integer property and return its value. Returns -1 * on failure. */ -inline int prom_getint(phandle node, const char *prop) +int prom_getint(phandle node, const char *prop) { int intprop; @@ -235,7 +235,7 @@ static const char *prom_nextprop_name = "nextprop"; /* Return the first property type for node 'node'. * buffer should be at least 32B in length */ -inline char *prom_firstprop(phandle node, char *buffer) +char *prom_firstprop(phandle node, char *buffer) { unsigned long args[7]; @@ -261,7 +261,7 @@ EXPORT_SYMBOL(prom_firstprop); * at node 'node' . Returns NULL string if no more * property types for this node. */ -inline char *prom_nextprop(phandle node, const char *oprop, char *buffer) +char *prom_nextprop(phandle node, const char *oprop, char *buffer) { unsigned long args[7]; char buf[32]; -- cgit v0.10.2 From 242ece22f0bd90e237365e51c5bd90a21693d6c3 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 30 May 2013 11:35:22 +0800 Subject: arch: sparc: prom: looping issue, need additional length check in the outside looping When "cp >= barg_buf + BARG_LEN-2", it breaks internel looping 'while', but outside loop 'for' still has effect, so "*cp++ = ' '" will continue repeating which may cause memory overflow. So need additional length check for it in the outside looping. Also beautify the related code which found by "./scripts/checkpatch.pl" Signed-off-by: Chen Gang Signed-off-by: David S. Miller diff --git a/arch/sparc/prom/bootstr_32.c b/arch/sparc/prom/bootstr_32.c index f5ec32e..d2b49d2 100644 --- a/arch/sparc/prom/bootstr_32.c +++ b/arch/sparc/prom/bootstr_32.c @@ -23,23 +23,25 @@ prom_getbootargs(void) return barg_buf; } - switch(prom_vers) { + switch (prom_vers) { case PROM_V0: cp = barg_buf; /* Start from 1 and go over fd(0,0,0)kernel */ - for(iter = 1; iter < 8; iter++) { + for (iter = 1; iter < 8; iter++) { arg = (*(romvec->pv_v0bootargs))->argv[iter]; if (arg == NULL) break; - while(*arg != 0) { + while (*arg != 0) { /* Leave place for space and null. */ - if(cp >= barg_buf + BARG_LEN-2){ + if (cp >= barg_buf + BARG_LEN - 2) /* We might issue a warning here. */ break; - } *cp++ = *arg++; } *cp++ = ' '; + if (cp >= barg_buf + BARG_LEN - 1) + /* We might issue a warning here. */ + break; } *cp = 0; break; -- cgit v0.10.2 From 117a0c5fc9c2d06045bd217385b2b39ea426b5a6 Mon Sep 17 00:00:00 2001 From: Zhao Hongjiang Date: Sun, 9 Jun 2013 16:57:58 +0800 Subject: sparc: kernel: using strlcpy() instead of strcpy() 'boot_command_line' and 'full_boot_str' has a fix length, 'cmdline_p' and 'boot_command' maybe larger than them. So use strlcpy() instead of strcpy() to avoid memory overflow. Signed-off-by: Zhao Hongjiang Signed-off-by: David S. Miller diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c index 75bb608..5ef48da 100644 --- a/arch/sparc/kernel/ds.c +++ b/arch/sparc/kernel/ds.c @@ -843,7 +843,8 @@ void ldom_reboot(const char *boot_command) unsigned long len; strcpy(full_boot_str, "boot "); - strcpy(full_boot_str + strlen("boot "), boot_command); + strlcpy(full_boot_str + strlen("boot "), boot_command, + sizeof(full_boot_str + strlen("boot "))); len = strlen(full_boot_str); if (reboot_data_supported) { diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c index 38bf80a..1434526 100644 --- a/arch/sparc/kernel/setup_32.c +++ b/arch/sparc/kernel/setup_32.c @@ -304,7 +304,7 @@ void __init setup_arch(char **cmdline_p) /* Initialize PROM console and command line. */ *cmdline_p = prom_getbootargs(); - strcpy(boot_command_line, *cmdline_p); + strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); parse_early_param(); boot_flags_init(*cmdline_p); diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 88a127b..1378554 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -555,7 +555,7 @@ void __init setup_arch(char **cmdline_p) { /* Initialize PROM console and command line. */ *cmdline_p = prom_getbootargs(); - strcpy(boot_command_line, *cmdline_p); + strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); parse_early_param(); boot_flags_init(*cmdline_p); -- cgit v0.10.2 From 1ffbc51a0d00e52983c70aa7c8dbc7b621d6287d Mon Sep 17 00:00:00 2001 From: Andreas Larsson Date: Mon, 10 Jun 2013 08:53:28 +0200 Subject: sparc32, leon: Remove separate "ticker" timer for SMP This reduces the need from two timers to one timer. Moreover, without this patch, when the "ticker" timer triggers timer_cs_read via tick_periodic it reads the value of the usual timer it can get an wrapped timer value without timer_cs_internal_counter having been updated leading to the clock going backwards. This effectively hangs one cpu that gets stuck in update_wall_time with an offset slightly smaller than 0xffffffffffffffff. Signed-off-by: Andreas Larsson Signed-off-by: David S. Miller diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h index 15a7169..b836e92 100644 --- a/arch/sparc/include/asm/leon.h +++ b/arch/sparc/include/asm/leon.h @@ -135,7 +135,7 @@ static inline int sparc_leon3_cpuid(void) #ifdef CONFIG_SMP # define LEON3_IRQ_IPI_DEFAULT 13 -# define LEON3_IRQ_TICKER (leon3_ticker_irq) +# define LEON3_IRQ_TICKER (leon3_gptimer_irq) # define LEON3_IRQ_CROSS_CALL 15 #endif diff --git a/arch/sparc/include/asm/leon_amba.h b/arch/sparc/include/asm/leon_amba.h index f3034ed..24ec48c 100644 --- a/arch/sparc/include/asm/leon_amba.h +++ b/arch/sparc/include/asm/leon_amba.h @@ -47,6 +47,7 @@ struct amba_prom_registers { #define LEON3_GPTIMER_LD 4 #define LEON3_GPTIMER_IRQEN 8 #define LEON3_GPTIMER_SEPIRQ 8 +#define LEON3_GPTIMER_TIMERS 0x7 #define LEON23_REG_TIMER_CONTROL_EN 0x00000001 /* 1 = enable counting */ /* 0 = hold scalar and counter */ diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c index 7c0231d..b7c6897 100644 --- a/arch/sparc/kernel/leon_kernel.c +++ b/arch/sparc/kernel/leon_kernel.c @@ -38,7 +38,6 @@ static DEFINE_SPINLOCK(leon_irq_lock); unsigned long leon3_gptimer_irq; /* interrupt controller irq number */ unsigned long leon3_gptimer_idx; /* Timer Index (0..6) within Timer Core */ -int leon3_ticker_irq; /* Timer ticker IRQ */ unsigned int sparc_leon_eirq; #define LEON_IMASK(cpu) (&leon3_irqctrl_regs->mask[cpu]) #define LEON_IACK (&leon3_irqctrl_regs->iclear) @@ -278,6 +277,9 @@ irqreturn_t leon_percpu_timer_ce_interrupt(int irq, void *unused) leon_clear_profile_irq(cpu); + if (cpu == boot_cpu_id) + timer_interrupt(irq, NULL); + ce = &per_cpu(sparc32_clockevent, cpu); irq_enter(); @@ -299,6 +301,7 @@ void __init leon_init_timers(void) int icsel; int ampopts; int err; + u32 config; sparc_config.get_cycles_offset = leon_cycles_offset; sparc_config.cs_period = 1000000 / HZ; @@ -377,23 +380,6 @@ void __init leon_init_timers(void) LEON3_BYPASS_STORE_PA( &leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, 0); -#ifdef CONFIG_SMP - leon3_ticker_irq = leon3_gptimer_irq + 1 + leon3_gptimer_idx; - - if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) & - (1<e[leon3_gptimer_idx+1].val, - 0); - LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].rld, - (((1000000/HZ) - 1))); - LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl, - 0); -#endif - /* * The IRQ controller may (if implemented) consist of multiple * IRQ controllers, each mapped on a 4Kb boundary. @@ -416,13 +402,6 @@ void __init leon_init_timers(void) if (eirq != 0) leon_eirq_setup(eirq); - irq = _leon_build_device_irq(NULL, leon3_gptimer_irq+leon3_gptimer_idx); - err = request_irq(irq, timer_interrupt, IRQF_TIMER, "timer", NULL); - if (err) { - printk(KERN_ERR "unable to attach timer IRQ%d\n", irq); - prom_halt(); - } - #ifdef CONFIG_SMP { unsigned long flags; @@ -439,30 +418,31 @@ void __init leon_init_timers(void) } #endif - LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, - LEON3_GPTIMER_EN | - LEON3_GPTIMER_RL | - LEON3_GPTIMER_LD | - LEON3_GPTIMER_IRQEN); + config = LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config); + if (config & (1 << LEON3_GPTIMER_SEPIRQ)) + leon3_gptimer_irq += leon3_gptimer_idx; + else if ((config & LEON3_GPTIMER_TIMERS) > 1) + pr_warn("GPTIMER uses shared irqs, using other timers of the same core will fail.\n"); #ifdef CONFIG_SMP /* Install per-cpu IRQ handler for broadcasted ticker */ - irq = leon_build_device_irq(leon3_ticker_irq, handle_percpu_irq, + irq = leon_build_device_irq(leon3_gptimer_irq, handle_percpu_irq, "per-cpu", 0); err = request_irq(irq, leon_percpu_timer_ce_interrupt, - IRQF_PERCPU | IRQF_TIMER, "ticker", - NULL); + IRQF_PERCPU | IRQF_TIMER, "timer", NULL); +#else + irq = _leon_build_device_irq(NULL, leon3_gptimer_irq); + err = request_irq(irq, timer_interrupt, IRQF_TIMER, "timer", NULL); +#endif if (err) { - printk(KERN_ERR "unable to attach ticker IRQ%d\n", irq); + pr_err("Unable to attach timer IRQ%d\n", irq); prom_halt(); } - - LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl, + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, LEON3_GPTIMER_EN | LEON3_GPTIMER_RL | LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN); -#endif return; bad: printk(KERN_ERR "No Timer/irqctrl found\n"); -- cgit v0.10.2 From d72ee6be58b7c99a6e8da6584106c5958dae2bf8 Mon Sep 17 00:00:00 2001 From: Andreas Larsson Date: Mon, 10 Jun 2013 08:56:41 +0200 Subject: sparc32, leon: Enable interrupts before going idle to avoid getting stuck This enables interrupts for Leon before having the CPU enter power-down mode. Commit 87fa05aeb3a5e8e21b1a5510eef6983650eff092, "sparc: Use generic idle loop", gets the CPU stuck on idle for Leon systems. On Leon, disabling interrupts and powering down the processor will get the processor stuck waiting for an interrupt that will never be reacted to. Signed-off-by: Andreas Larsson Signed-off-by: David S. Miller diff --git a/arch/sparc/kernel/leon_pmc.c b/arch/sparc/kernel/leon_pmc.c index bdf53d9..b0b3967 100644 --- a/arch/sparc/kernel/leon_pmc.c +++ b/arch/sparc/kernel/leon_pmc.c @@ -47,6 +47,10 @@ void pmc_leon_idle_fixup(void) * MMU does not get a TLB miss here by using the MMU BYPASS ASI. */ register unsigned int address = (unsigned int)leon3_irqctrl_regs; + + /* Interrupts need to be enabled to not hang the CPU */ + local_irq_enable(); + __asm__ __volatile__ ( "wr %%g0, %%asr19\n" "lda [%0] %1, %%g0\n" @@ -60,6 +64,9 @@ void pmc_leon_idle_fixup(void) */ void pmc_leon_idle(void) { + /* Interrupts need to be enabled to not hang the CPU */ + local_irq_enable(); + /* For systems without power-down, this will be no-op */ __asm__ __volatile__ ("wr %g0, %asr19\n\t"); } -- cgit v0.10.2 From 771a37ff4d80b80db3b0df3e7696f14b298c67b7 Mon Sep 17 00:00:00 2001 From: bob picco Date: Tue, 11 Jun 2013 14:54:51 -0400 Subject: sparc64 address-congruence property The Machine Description (MD) property "address-congruence-offset" is optional. According to the MD specification the value is assumed 0UL when not present. This caused early boot failure on T5. Signed-off-by: Bob Picco CC: sparclinux@vger.kernel.org Signed-off-by: David S. Miller diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index a717199..04fd55a 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -1098,7 +1098,14 @@ static int __init grab_mblocks(struct mdesc_handle *md) m->size = *val; val = mdesc_get_property(md, node, "address-congruence-offset", NULL); - m->offset = *val; + + /* The address-congruence-offset property is optional. + * Explicity zero it be identifty this. + */ + if (val) + m->offset = *val; + else + m->offset = 0UL; numadbg("MBLOCK[%d]: base[%llx] size[%llx] offset[%llx]\n", count - 1, m->base, m->size, m->offset); -- cgit v0.10.2 From f670758f5b829169562e1016a72af0c59360a541 Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Mon, 17 Jun 2013 14:37:44 +0530 Subject: sparc,leon: Convert to use devm_ioremap_resource Commit 75096579c3ac ("lib: devres: Introduce devm_ioremap_resource()") introduced devm_ioremap_resource() and deprecated the use of devm_request_and_ioremap(). While at it, also remove the error message as devm_ioremap_resource() also prints similar error message. Signed-off-by: Tushar Behera CC: sparclinux@vger.kernel.org CC: "David S. Miller" Signed-off-by: David S. Miller diff --git a/arch/sparc/kernel/leon_pci_grpci1.c b/arch/sparc/kernel/leon_pci_grpci1.c index 7739a54..6df26e3 100644 --- a/arch/sparc/kernel/leon_pci_grpci1.c +++ b/arch/sparc/kernel/leon_pci_grpci1.c @@ -536,11 +536,9 @@ static int grpci1_of_probe(struct platform_device *ofdev) /* find device register base address */ res = platform_get_resource(ofdev, IORESOURCE_MEM, 0); - regs = devm_request_and_ioremap(&ofdev->dev, res); - if (!regs) { - dev_err(&ofdev->dev, "io-regs mapping failed\n"); - return -EADDRNOTAVAIL; - } + regs = devm_ioremap_resource(&ofdev->dev, res); + if (IS_ERR(regs)) + return PTR_ERR(regs); /* * check that we're in Host Slot and that we can act as a Host Bridge -- cgit v0.10.2 From 23a01138efe216f8084cfaa74b0b90dd4b097441 Mon Sep 17 00:00:00 2001 From: Dave Kleikamp Date: Tue, 18 Jun 2013 09:05:36 -0500 Subject: sparc: tsb must be flushed before tlb This fixes a race where a cpu may re-load a tlb from a stale tsb right after it has been flushed by a remote function call. I still see some instability when stressing the system with parallel kernel builds while creating memory pressure by writing to /proc/sys/vm/nr_hugepages, but this patch improves the stability significantly. Signed-off-by: Dave Kleikamp Acked-by: Bob Picco Signed-off-by: David S. Miller diff --git a/arch/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c index 83d89bc..37e7bc4 100644 --- a/arch/sparc/mm/tlb.c +++ b/arch/sparc/mm/tlb.c @@ -85,8 +85,8 @@ static void tlb_batch_add_one(struct mm_struct *mm, unsigned long vaddr, } if (!tb->active) { - global_flush_tlb_page(mm, vaddr); flush_tsb_user_page(mm, vaddr); + global_flush_tlb_page(mm, vaddr); goto out; } -- cgit v0.10.2 From f8941fbe204fa2fb51e7acd8bfd0f51225fe03b4 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 11 Jun 2013 11:38:31 -0500 Subject: kvm/ppc/booke: Delay kvmppc_lazy_ee_enable kwmppc_lazy_ee_enable() should be called as late as possible, or else we get things like WARN_ON(preemptible()) in enable_kernel_fp() in configurations where preemptible() works. Note that book3s_pr already waits until just before __kvmppc_vcpu_run to call kvmppc_lazy_ee_enable(). Signed-off-by: Scott Wood Signed-off-by: Paolo Bonzini diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 5cd7ad0..1a1b511 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -673,7 +673,6 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) ret = s; goto out; } - kvmppc_lazy_ee_enable(); kvm_guest_enter(); @@ -699,6 +698,8 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) kvmppc_load_guest_fp(vcpu); #endif + kvmppc_lazy_ee_enable(); + ret = __kvmppc_vcpu_run(kvm_run, vcpu); /* No need for kvm_guest_exit. It's done in handle_exit. -- cgit v0.10.2 From 07868fc6aaf57847b0f3a3d53086b7556eb83f4a Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Mon, 10 Jun 2013 18:31:11 +0200 Subject: x86: kvmclock: zero initialize pvclock shared memory area kernel might hung in pvclock_clocksource_read() due to uninitialized memory might contain odd version value in following cycle: do { version = __pvclock_read_cycles(src, &ret, &flags); } while ((src->version & 1) || version != src->version); if secondary kvmclock is accessed before it's registered with kvm. Clear garbage in pvclock shared memory area right after it's allocated to avoid this issue. Ref: https://bugzilla.kernel.org/show_bug.cgi?id=59521 Signed-off-by: Igor Mammedov [See BZ for analysis. We may want a different fix for 3.11, but this is the safest for now - Paolo] Cc: # 3.8 Signed-off-by: Paolo Bonzini diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index d2c3812..3dd37eb 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -242,6 +242,7 @@ void __init kvmclock_init(void) if (!mem) return; hv_clock = __va(mem); + memset(hv_clock, 0, size); if (kvm_register_clock("boot clock")) { hv_clock = NULL; -- cgit v0.10.2 From 9bb5d40cd93c9dd4be74834b1dcb1ba03629716b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 4 Jun 2013 10:44:21 +0200 Subject: perf: Fix mmap() accounting hole Vince's fuzzer once again found holes. This time it spotted a leak in the locked page accounting. When an event had redirected output and its close() was the last reference to the buffer we didn't have a vm context to undo accounting. Change the code to destroy the buffer on the last munmap() and detach all redirected events at that time. This provides us the right context to undo the vm accounting. Reported-and-tested-by: Vince Weaver Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20130604084421.GI8923@twins.programming.kicks-ass.net Cc: Signed-off-by: Ingo Molnar diff --git a/kernel/events/core.c b/kernel/events/core.c index ae752cd..b391907 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -196,9 +196,6 @@ static void cpu_ctx_sched_in(struct perf_cpu_context *cpuctx, static void update_context_time(struct perf_event_context *ctx); static u64 perf_event_time(struct perf_event *event); -static void ring_buffer_attach(struct perf_event *event, - struct ring_buffer *rb); - void __weak perf_event_print_debug(void) { } extern __weak const char *perf_pmu_name(void) @@ -2917,7 +2914,8 @@ static void free_event_rcu(struct rcu_head *head) kfree(event); } -static bool ring_buffer_put(struct ring_buffer *rb); +static void ring_buffer_put(struct ring_buffer *rb); +static void ring_buffer_detach(struct perf_event *event, struct ring_buffer *rb); static void free_event(struct perf_event *event) { @@ -2942,15 +2940,30 @@ static void free_event(struct perf_event *event) if (has_branch_stack(event)) { static_key_slow_dec_deferred(&perf_sched_events); /* is system-wide event */ - if (!(event->attach_state & PERF_ATTACH_TASK)) + if (!(event->attach_state & PERF_ATTACH_TASK)) { atomic_dec(&per_cpu(perf_branch_stack_events, event->cpu)); + } } } if (event->rb) { - ring_buffer_put(event->rb); - event->rb = NULL; + struct ring_buffer *rb; + + /* + * Can happen when we close an event with re-directed output. + * + * Since we have a 0 refcount, perf_mmap_close() will skip + * over us; possibly making our ring_buffer_put() the last. + */ + mutex_lock(&event->mmap_mutex); + rb = event->rb; + if (rb) { + rcu_assign_pointer(event->rb, NULL); + ring_buffer_detach(event, rb); + ring_buffer_put(rb); /* could be last */ + } + mutex_unlock(&event->mmap_mutex); } if (is_cgroup_event(event)) @@ -3188,30 +3201,13 @@ static unsigned int perf_poll(struct file *file, poll_table *wait) unsigned int events = POLL_HUP; /* - * Race between perf_event_set_output() and perf_poll(): perf_poll() - * grabs the rb reference but perf_event_set_output() overrides it. - * Here is the timeline for two threads T1, T2: - * t0: T1, rb = rcu_dereference(event->rb) - * t1: T2, old_rb = event->rb - * t2: T2, event->rb = new rb - * t3: T2, ring_buffer_detach(old_rb) - * t4: T1, ring_buffer_attach(rb1) - * t5: T1, poll_wait(event->waitq) - * - * To avoid this problem, we grab mmap_mutex in perf_poll() - * thereby ensuring that the assignment of the new ring buffer - * and the detachment of the old buffer appear atomic to perf_poll() + * Pin the event->rb by taking event->mmap_mutex; otherwise + * perf_event_set_output() can swizzle our rb and make us miss wakeups. */ mutex_lock(&event->mmap_mutex); - - rcu_read_lock(); - rb = rcu_dereference(event->rb); - if (rb) { - ring_buffer_attach(event, rb); + rb = event->rb; + if (rb) events = atomic_xchg(&rb->poll, 0); - } - rcu_read_unlock(); - mutex_unlock(&event->mmap_mutex); poll_wait(file, &event->waitq, wait); @@ -3521,16 +3517,12 @@ static void ring_buffer_attach(struct perf_event *event, return; spin_lock_irqsave(&rb->event_lock, flags); - if (!list_empty(&event->rb_entry)) - goto unlock; - - list_add(&event->rb_entry, &rb->event_list); -unlock: + if (list_empty(&event->rb_entry)) + list_add(&event->rb_entry, &rb->event_list); spin_unlock_irqrestore(&rb->event_lock, flags); } -static void ring_buffer_detach(struct perf_event *event, - struct ring_buffer *rb) +static void ring_buffer_detach(struct perf_event *event, struct ring_buffer *rb) { unsigned long flags; @@ -3549,13 +3541,10 @@ static void ring_buffer_wakeup(struct perf_event *event) rcu_read_lock(); rb = rcu_dereference(event->rb); - if (!rb) - goto unlock; - - list_for_each_entry_rcu(event, &rb->event_list, rb_entry) - wake_up_all(&event->waitq); - -unlock: + if (rb) { + list_for_each_entry_rcu(event, &rb->event_list, rb_entry) + wake_up_all(&event->waitq); + } rcu_read_unlock(); } @@ -3582,23 +3571,14 @@ static struct ring_buffer *ring_buffer_get(struct perf_event *event) return rb; } -static bool ring_buffer_put(struct ring_buffer *rb) +static void ring_buffer_put(struct ring_buffer *rb) { - struct perf_event *event, *n; - unsigned long flags; - if (!atomic_dec_and_test(&rb->refcount)) - return false; + return; - spin_lock_irqsave(&rb->event_lock, flags); - list_for_each_entry_safe(event, n, &rb->event_list, rb_entry) { - list_del_init(&event->rb_entry); - wake_up_all(&event->waitq); - } - spin_unlock_irqrestore(&rb->event_lock, flags); + WARN_ON_ONCE(!list_empty(&rb->event_list)); call_rcu(&rb->rcu_head, rb_free_rcu); - return true; } static void perf_mmap_open(struct vm_area_struct *vma) @@ -3606,28 +3586,100 @@ static void perf_mmap_open(struct vm_area_struct *vma) struct perf_event *event = vma->vm_file->private_data; atomic_inc(&event->mmap_count); + atomic_inc(&event->rb->mmap_count); } +/* + * A buffer can be mmap()ed multiple times; either directly through the same + * event, or through other events by use of perf_event_set_output(). + * + * In order to undo the VM accounting done by perf_mmap() we need to destroy + * the buffer here, where we still have a VM context. This means we need + * to detach all events redirecting to us. + */ static void perf_mmap_close(struct vm_area_struct *vma) { struct perf_event *event = vma->vm_file->private_data; - if (atomic_dec_and_mutex_lock(&event->mmap_count, &event->mmap_mutex)) { - struct ring_buffer *rb = event->rb; - struct user_struct *mmap_user = rb->mmap_user; - int mmap_locked = rb->mmap_locked; - unsigned long size = perf_data_size(rb); + struct ring_buffer *rb = event->rb; + struct user_struct *mmap_user = rb->mmap_user; + int mmap_locked = rb->mmap_locked; + unsigned long size = perf_data_size(rb); - rcu_assign_pointer(event->rb, NULL); - ring_buffer_detach(event, rb); - mutex_unlock(&event->mmap_mutex); + atomic_dec(&rb->mmap_count); + + if (!atomic_dec_and_mutex_lock(&event->mmap_count, &event->mmap_mutex)) + return; + + /* Detach current event from the buffer. */ + rcu_assign_pointer(event->rb, NULL); + ring_buffer_detach(event, rb); + mutex_unlock(&event->mmap_mutex); + + /* If there's still other mmap()s of this buffer, we're done. */ + if (atomic_read(&rb->mmap_count)) { + ring_buffer_put(rb); /* can't be last */ + return; + } - if (ring_buffer_put(rb)) { - atomic_long_sub((size >> PAGE_SHIFT) + 1, &mmap_user->locked_vm); - vma->vm_mm->pinned_vm -= mmap_locked; - free_uid(mmap_user); + /* + * No other mmap()s, detach from all other events that might redirect + * into the now unreachable buffer. Somewhat complicated by the + * fact that rb::event_lock otherwise nests inside mmap_mutex. + */ +again: + rcu_read_lock(); + list_for_each_entry_rcu(event, &rb->event_list, rb_entry) { + if (!atomic_long_inc_not_zero(&event->refcount)) { + /* + * This event is en-route to free_event() which will + * detach it and remove it from the list. + */ + continue; } + rcu_read_unlock(); + + mutex_lock(&event->mmap_mutex); + /* + * Check we didn't race with perf_event_set_output() which can + * swizzle the rb from under us while we were waiting to + * acquire mmap_mutex. + * + * If we find a different rb; ignore this event, a next + * iteration will no longer find it on the list. We have to + * still restart the iteration to make sure we're not now + * iterating the wrong list. + */ + if (event->rb == rb) { + rcu_assign_pointer(event->rb, NULL); + ring_buffer_detach(event, rb); + ring_buffer_put(rb); /* can't be last, we still have one */ + } + mutex_unlock(&event->mmap_mutex); + put_event(event); + + /* + * Restart the iteration; either we're on the wrong list or + * destroyed its integrity by doing a deletion. + */ + goto again; } + rcu_read_unlock(); + + /* + * It could be there's still a few 0-ref events on the list; they'll + * get cleaned up by free_event() -- they'll also still have their + * ref on the rb and will free it whenever they are done with it. + * + * Aside from that, this buffer is 'fully' detached and unmapped, + * undo the VM accounting. + */ + + atomic_long_sub((size >> PAGE_SHIFT) + 1, &mmap_user->locked_vm); + vma->vm_mm->pinned_vm -= mmap_locked; + free_uid(mmap_user); + + ring_buffer_put(rb); /* could be last */ } static const struct vm_operations_struct perf_mmap_vmops = { @@ -3677,10 +3729,24 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) return -EINVAL; WARN_ON_ONCE(event->ctx->parent_ctx); +again: mutex_lock(&event->mmap_mutex); if (event->rb) { - if (event->rb->nr_pages != nr_pages) + if (event->rb->nr_pages != nr_pages) { ret = -EINVAL; + goto unlock; + } + + if (!atomic_inc_not_zero(&event->rb->mmap_count)) { + /* + * Raced against perf_mmap_close() through + * perf_event_set_output(). Try again, hope for better + * luck. + */ + mutex_unlock(&event->mmap_mutex); + goto again; + } + goto unlock; } @@ -3722,12 +3788,14 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) goto unlock; } + atomic_set(&rb->mmap_count, 1); rb->mmap_locked = extra; rb->mmap_user = get_current_user(); atomic_long_add(user_extra, &user->locked_vm); vma->vm_mm->pinned_vm += extra; + ring_buffer_attach(event, rb); rcu_assign_pointer(event->rb, rb); perf_event_update_userpage(event); @@ -3737,6 +3805,10 @@ unlock: atomic_inc(&event->mmap_count); mutex_unlock(&event->mmap_mutex); + /* + * Since pinned accounting is per vm we cannot allow fork() to copy our + * vma. + */ vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND | VM_DONTDUMP; vma->vm_ops = &perf_mmap_vmops; @@ -6415,6 +6487,8 @@ set: if (atomic_read(&event->mmap_count)) goto unlock; + old_rb = event->rb; + if (output_event) { /* get the rb we want to redirect to */ rb = ring_buffer_get(output_event); @@ -6422,16 +6496,28 @@ set: goto unlock; } - old_rb = event->rb; - rcu_assign_pointer(event->rb, rb); if (old_rb) ring_buffer_detach(event, old_rb); + + if (rb) + ring_buffer_attach(event, rb); + + rcu_assign_pointer(event->rb, rb); + + if (old_rb) { + ring_buffer_put(old_rb); + /* + * Since we detached before setting the new rb, so that we + * could attach the new rb, we could have missed a wakeup. + * Provide it now. + */ + wake_up_all(&event->waitq); + } + ret = 0; unlock: mutex_unlock(&event->mmap_mutex); - if (old_rb) - ring_buffer_put(old_rb); out: return ret; } diff --git a/kernel/events/internal.h b/kernel/events/internal.h index 5bc6c8e..ca65997 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -31,7 +31,8 @@ struct ring_buffer { spinlock_t event_lock; struct list_head event_list; - int mmap_locked; + atomic_t mmap_count; + unsigned long mmap_locked; struct user_struct *mmap_user; struct perf_event_mmap_page *user_page; -- cgit v0.10.2 From f1a527899ef0a8a241eb3bea619eb2e29d797f44 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Fri, 7 Jun 2013 23:22:10 +0200 Subject: perf/x86: Fix broken PEBS-LL support on SNB-EP/IVB-EP This patch fixes broken support of PEBS-LL on SNB-EP/IVB-EP. For some reason, the LDLAT extra reg definition for snb_ep showed up as duplicate in the snb table. This patch moves the definition of LDLAT back into the snb_ep table. Thanks to Don Zickus for tracking this one down. Signed-off-by: Stephane Eranian Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20130607212210.GA11849@quad Signed-off-by: Ingo Molnar diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index f60d41f..a9e2207 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -165,13 +165,13 @@ static struct extra_reg intel_snb_extra_regs[] __read_mostly = { INTEL_EVENT_EXTRA_REG(0xb7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0), INTEL_EVENT_EXTRA_REG(0xbb, MSR_OFFCORE_RSP_1, 0x3f807f8fffull, RSP_1), INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd), - INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd), EVENT_EXTRA_END }; static struct extra_reg intel_snbep_extra_regs[] __read_mostly = { INTEL_EVENT_EXTRA_REG(0xb7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0), INTEL_EVENT_EXTRA_REG(0xbb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1), + INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd), EVENT_EXTRA_END }; -- cgit v0.10.2 From 722a860ecb29aa34ec6f7d7f32b949209e86a2f3 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 14 Jun 2013 10:44:30 -0300 Subject: [media] exynos4-is: Fix FIMC-IS clocks initialization The ISP clock register content is not preserved over the ISP power domain off/on cycle. Instead of setting the clock frequencies once at probe time the clock rates set up is moved to the runtime_resume handler, which is invoked after the related power domain is already enabled, ensuring the clocks are properly configured when the device is actively used. This fixes the FIMC-IS malfunctions and STREAM ON timeout errors accuring on some boards: [ 59.860000] fimc_is_general_irq_handler:583 ISR_NDONE: 5: 0x800003e8, IS_ERROR_UNKNOWN [ 59.860000] fimc_is_general_irq_handler:586 IS_ERROR_TIME_OUT Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c index 520e439..0741945 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.c +++ b/drivers/media/platform/exynos4-is/fimc-is.c @@ -834,23 +834,11 @@ static int fimc_is_probe(struct platform_device *pdev) goto err_clk; } pm_runtime_enable(dev); - /* - * Enable only the ISP power domain, keep FIMC-IS clocks off until - * the whole clock tree is configured. The ISP power domain needs - * be active in order to acces any CMU_ISP clock registers. - */ - ret = pm_runtime_get_sync(dev); - if (ret < 0) - goto err_irq; - - ret = fimc_is_setup_clocks(is); - pm_runtime_put_sync(dev); + ret = pm_runtime_get_sync(dev); if (ret < 0) goto err_irq; - is->clk_init = true; - is->alloc_ctx = vb2_dma_contig_init_ctx(dev); if (IS_ERR(is->alloc_ctx)) { ret = PTR_ERR(is->alloc_ctx); @@ -872,6 +860,8 @@ static int fimc_is_probe(struct platform_device *pdev) if (ret < 0) goto err_dfs; + pm_runtime_put_sync(dev); + dev_dbg(dev, "FIMC-IS registered successfully\n"); return 0; @@ -891,9 +881,11 @@ err_clk: static int fimc_is_runtime_resume(struct device *dev) { struct fimc_is *is = dev_get_drvdata(dev); + int ret; - if (!is->clk_init) - return 0; + ret = fimc_is_setup_clocks(is); + if (ret) + return ret; return fimc_is_enable_clocks(is); } @@ -902,9 +894,7 @@ static int fimc_is_runtime_suspend(struct device *dev) { struct fimc_is *is = dev_get_drvdata(dev); - if (is->clk_init) - fimc_is_disable_clocks(is); - + fimc_is_disable_clocks(is); return 0; } diff --git a/drivers/media/platform/exynos4-is/fimc-is.h b/drivers/media/platform/exynos4-is/fimc-is.h index 606a7c9..d7db133 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.h +++ b/drivers/media/platform/exynos4-is/fimc-is.h @@ -264,7 +264,6 @@ struct fimc_is { spinlock_t slock; struct clk *clocks[ISS_CLKS_MAX]; - bool clk_init; void __iomem *regs; void __iomem *pmu_regs; int irq; -- cgit v0.10.2 From 35b03aec919c952e67b0b093638e0d79b468f9bc Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 19 Jun 2013 09:16:54 +0200 Subject: s390/mem_detect: fix memory hole handling With git commit 996b4a7d "s390/mem_detect: remove artificial kdump memory types" the memory detection code got simplified. As a side effect the array that describes memory chunks may now contain empty (zeroed) entries. All call sites can handle this except for drivers/s390/char/zcore.c::zcore_memmap_open which has a really odd user space interface. The easiest fix is to change the memory hole handling code, so that no empty entries exist before the last valid entry is reached. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/mm/mem_detect.c b/arch/s390/mm/mem_detect.c index 3cbd3b8..cca3882 100644 --- a/arch/s390/mm/mem_detect.c +++ b/arch/s390/mm/mem_detect.c @@ -123,7 +123,8 @@ void create_mem_hole(struct mem_chunk mem_chunk[], unsigned long addr, continue; } else if ((addr <= chunk->addr) && (addr + size >= chunk->addr + chunk->size)) { - memset(chunk, 0 , sizeof(*chunk)); + memmove(chunk, chunk + 1, (MEMORY_CHUNKS-i-1) * sizeof(*chunk)); + memset(&mem_chunk[MEMORY_CHUNKS-1], 0, sizeof(*chunk)); } else if (addr + size < chunk->addr + chunk->size) { chunk->size = chunk->addr + chunk->size - addr - size; chunk->addr = addr + size; -- cgit v0.10.2 From 418a133b714352c35f050d59857f95f769d552d2 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Fri, 14 Jun 2013 10:31:01 +0100 Subject: metag: fix mm/hugetlb.c build breakage Commit 106c992a5ebe ("mm/hugetlb: add more arch-defined huge_pte functions") added an include of to each architecture's (except s390). Unfortunately metag was missed which resulted in build errors when hugetlbfs is enabled (see below). Add the include for metag too to fix the build errors: mm/hugetlb.c In function 'make_huge_pte': mm/hugetlb.c +2250 : error: implicit declaration of function 'huge_pte_mkwrite' mm/hugetlb.c +2250 : error: implicit declaration of function 'huge_pte_mkdirty' ... Signed-off-by: James Hogan Cc: Gerald Schaefer Cc: Andrew Morton Cc: Michal Hocko Signed-off-by: Linus Torvalds diff --git a/arch/metag/include/asm/hugetlb.h b/arch/metag/include/asm/hugetlb.h index f545477..471f481 100644 --- a/arch/metag/include/asm/hugetlb.h +++ b/arch/metag/include/asm/hugetlb.h @@ -2,6 +2,7 @@ #define _ASM_METAG_HUGETLB_H #include +#include static inline int is_hugepage_only_range(struct mm_struct *mm, -- cgit v0.10.2 From c0691143dfe1d42ec9bd89de5921ccb6a27ea1b3 Mon Sep 17 00:00:00 2001 From: David Daney Date: Mon, 17 Jun 2013 08:46:07 -0700 Subject: mn10300: Fix include dependency in irqflags.h et al. We need to pick up the definition of raw_smp_processor_id() from asm/smp.h. For the !SMP case, we need to supply a definition of raw_smp_processor_id(). Because of the include dependencies we cannot use smp_call_func_t in asm/smp.h, but we do need linux/thread_info.h Signed-off-by: David Daney Acked-by: Geert Uytterhoeven Acked-by: David Howells Signed-off-by: Linus Torvalds diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h index 678f68d..8730c0a 100644 --- a/arch/mn10300/include/asm/irqflags.h +++ b/arch/mn10300/include/asm/irqflags.h @@ -13,9 +13,8 @@ #define _ASM_IRQFLAGS_H #include -#ifndef __ASSEMBLY__ -#include -#endif +/* linux/smp.h <- linux/irqflags.h needs asm/smp.h first */ +#include /* * interrupt control diff --git a/arch/mn10300/include/asm/smp.h b/arch/mn10300/include/asm/smp.h index 6745dbe..56c4241 100644 --- a/arch/mn10300/include/asm/smp.h +++ b/arch/mn10300/include/asm/smp.h @@ -24,6 +24,7 @@ #ifndef __ASSEMBLY__ #include #include +#include #endif #ifdef CONFIG_SMP @@ -85,7 +86,7 @@ extern cpumask_t cpu_boot_map; extern void smp_init_cpus(void); extern void smp_cache_interrupt(void); extern void send_IPI_allbutself(int irq); -extern int smp_nmi_call_function(smp_call_func_t func, void *info, int wait); +extern int smp_nmi_call_function(void (*func)(void *), void *info, int wait); extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); @@ -100,6 +101,7 @@ extern void __cpu_die(unsigned int cpu); #ifndef __ASSEMBLY__ static inline void smp_init_cpus(void) {} +#define raw_smp_processor_id() 0 #endif /* __ASSEMBLY__ */ #endif /* CONFIG_SMP */ -- cgit v0.10.2 From 3a5a423bb958ad22eeccca66c533e85bf69ba10e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 19 Jun 2013 10:09:57 +0200 Subject: nl80211: fix attrbuf access race by allocating a separate one Since my commit 3713b4e364 ("nl80211: allow splitting wiphy information in dumps"), nl80211_dump_wiphy() uses the global nl80211_fam.attrbuf for parsing the incoming data. This wouldn't be a problem if it only did so on the first dump iteration which is locked against other commands in generic netlink, but due to space constraints in cb->args (the needed state doesn't fit) I decided to always parse the original message. That's racy though since nl80211_fam.attrbuf could be used by some other parsing in generic netlink concurrently. For now, fix this by allocating a separate parse buffer (it's a bit too big for the stack, currently 1448 bytes on 64-bit). For -next, I'll change the code to parse into the global buffer in the first round only and then allocate a smaller buffer to keep the data in cb->args. Reported-by: Linus Torvalds Acked-by: David S. Miller Acked-by: John W. Linville Signed-off-by: Johannes Berg diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index d5aed3b..b14b7e3 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1564,12 +1564,17 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) struct cfg80211_registered_device *dev; s64 filter_wiphy = -1; bool split = false; - struct nlattr **tb = nl80211_fam.attrbuf; + struct nlattr **tb; int res; + /* will be zeroed in nlmsg_parse() */ + tb = kmalloc(sizeof(*tb) * (NL80211_ATTR_MAX + 1), GFP_KERNEL); + if (!tb) + return -ENOMEM; + mutex_lock(&cfg80211_mutex); res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, - tb, nl80211_fam.maxattr, nl80211_policy); + tb, NL80211_ATTR_MAX, nl80211_policy); if (res == 0) { split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; if (tb[NL80211_ATTR_WIPHY]) @@ -1583,6 +1588,7 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) netdev = dev_get_by_index(sock_net(skb->sk), ifidx); if (!netdev) { mutex_unlock(&cfg80211_mutex); + kfree(tb); return -ENODEV; } if (netdev->ieee80211_ptr) { @@ -1593,6 +1599,7 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) dev_put(netdev); } } + kfree(tb); list_for_each_entry(dev, &cfg80211_rdev_list, list) { if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) -- cgit v0.10.2 From 949785996ec2250fa958fc3a924e5186e9a8fa2c Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 19 Jun 2013 11:15:26 -0400 Subject: x86: Fix section mismatch on load_ucode_ap We are in the process of removing all the __cpuinit annotations. While working on making that change, an existing problem was made evident: WARNING: arch/x86/kernel/built-in.o(.text+0x198f2): Section mismatch in reference from the function cpu_init() to the function .init.text:load_ucode_ap() The function cpu_init() references the function __init load_ucode_ap(). This is often because cpu_init lacks a __init annotation or the annotation of load_ucode_ap is wrong. This now appears because in my working tree, cpu_init() is no longer tagged as __cpuinit, and so the audit picks up the mismatch. The 2nd hypothesis from the audit is the correct one, as there was an incorrect __init tag on the prototype in the header (but __cpuinit was used on the function itself.) The audit is telling us that the prototype's __init annotation took effect and the function did land in the .init.text section. Checking with objdump on a mainline tree that still has __cpuinit shows that the __cpuinit on the function takes precedence over the __init on the prototype, but that won't be true once we make __cpuinit a no-op. Even though we are removing __cpuinit, we temporarily align both the function and the prototype on __cpuinit so that the changeset can be applied to stable trees if desired. [ hpa: build fix only, no object code change ] Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: stable # 3.9+ Signed-off-by: Paul Gortmaker Link: http://lkml.kernel.org/r/1371654926-11729-1-git-send-email-paul.gortmaker@windriver.com Signed-off-by: H. Peter Anvin diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h index 6825e2e..6bc3985 100644 --- a/arch/x86/include/asm/microcode.h +++ b/arch/x86/include/asm/microcode.h @@ -60,11 +60,11 @@ static inline void __exit exit_amd_microcode(void) {} #ifdef CONFIG_MICROCODE_EARLY #define MAX_UCODE_COUNT 128 extern void __init load_ucode_bsp(void); -extern __init void load_ucode_ap(void); +extern void __cpuinit load_ucode_ap(void); extern int __init save_microcode_in_initrd(void); #else static inline void __init load_ucode_bsp(void) {} -static inline __init void load_ucode_ap(void) {} +static inline void __cpuinit load_ucode_ap(void) {} static inline int __init save_microcode_in_initrd(void) { return 0; -- cgit v0.10.2 From 204ebc0aa30a7115f300cac39fbb7eeb66524881 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Mon, 20 May 2013 15:41:45 +0000 Subject: ACPI / resources: call acpi_get_override_irq() only for legacy IRQ resources acpi_get_override_irq() was added because there was a problem with buggy BIOSes passing wrong IRQ() resource for the RTC IRQ. The commit that added the workaround was 61fd47e0c8476 (ACPI: fix two IRQ8 issues in IOAPIC mode). With ACPI 5 enumerated devices there are typically one or more extended IRQ resources per device (and these IRQs can be shared). However, the acpi_get_override_irq() workaround forces all IRQs in range 0 - 15 (the legacy ISA IRQs) to be edge triggered, active high as can be seen from the dmesg below: ACPI: IRQ 6 override to edge, high ACPI: IRQ 7 override to edge, high ACPI: IRQ 7 override to edge, high ACPI: IRQ 13 override to edge, high Also /proc/interrupts for the I2C controllers (INT33C2 and INT33C3) shows the same thing: 7: 4 0 0 0 IO-APIC-edge INT33C2:00, INT33C3:00 The _CSR method for INT33C2 (and INT33C3) device returns following resource: Interrupt (ResourceConsumer, Level, ActiveLow, Shared,,, ) { 0x00000007, } which states that this is supposed to be level triggered, active low, shared IRQ instead. Fix this by making sure that acpi_get_override_irq() gets only called when we are dealing with legacy IRQ() or IRQNoFlags() descriptors. While we are there, correct pr_warning() to print the right triggering value. This change turns out to be necessary to make DMA work correctly on systems based on the Intel Lynxpoint PCH (Platform Controller Hub). [rjw: Changelog] Signed-off-by: Mika Westerberg Cc: 3.9+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index a3868f6..3322b47 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -304,7 +304,8 @@ static void acpi_dev_irqresource_disabled(struct resource *res, u32 gsi) } static void acpi_dev_get_irqresource(struct resource *res, u32 gsi, - u8 triggering, u8 polarity, u8 shareable) + u8 triggering, u8 polarity, u8 shareable, + bool legacy) { int irq, p, t; @@ -317,14 +318,19 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi, * In IO-APIC mode, use overrided attribute. Two reasons: * 1. BIOS bug in DSDT * 2. BIOS uses IO-APIC mode Interrupt Source Override + * + * We do this only if we are dealing with IRQ() or IRQNoFlags() + * resource (the legacy ISA resources). With modern ACPI 5 devices + * using extended IRQ descriptors we take the IRQ configuration + * from _CRS directly. */ - if (!acpi_get_override_irq(gsi, &t, &p)) { + if (legacy && !acpi_get_override_irq(gsi, &t, &p)) { u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE; u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH; if (triggering != trig || polarity != pol) { pr_warning("ACPI: IRQ %d override to %s, %s\n", gsi, - t ? "edge" : "level", p ? "low" : "high"); + t ? "level" : "edge", p ? "low" : "high"); triggering = trig; polarity = pol; } @@ -373,7 +379,7 @@ bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, } acpi_dev_get_irqresource(res, irq->interrupts[index], irq->triggering, irq->polarity, - irq->sharable); + irq->sharable, true); break; case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: ext_irq = &ares->data.extended_irq; @@ -383,7 +389,7 @@ bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, } acpi_dev_get_irqresource(res, ext_irq->interrupts[index], ext_irq->triggering, ext_irq->polarity, - ext_irq->sharable); + ext_irq->sharable, false); break; default: return false; -- cgit v0.10.2 From 8112006f41fd76ddf4988f8ddd904563db85613c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Jun 2013 00:38:30 +0200 Subject: ACPI / dock: Take ACPI scan lock in write_undock() Since commit 3757b94 (ACPI / hotplug: Fix concurrency issues and memory leaks) acpi_bus_scan() and acpi_bus_trim() must always be called under acpi_scan_lock, but currently the following scenario violating that requirement is possible: write_undock() handle_eject_request() hotplug_dock_devices() dock_remove_acpi_device() acpi_bus_trim() Fix that by making write_undock() acquire acpi_scan_lock before calling handle_eject_request() as appropriate (begin_undock() is under the lock too in analogy with acpi_dock_deferred_cb()). Signed-off-by: Rafael J. Wysocki Cc: 3.9+ Acked-by: Toshi Kani diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 4fdea38..ec117c6 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -868,8 +868,10 @@ static ssize_t write_undock(struct device *dev, struct device_attribute *attr, if (!count) return -EINVAL; + acpi_scan_lock_acquire(); begin_undock(dock_station); ret = handle_eject_request(dock_station, ACPI_NOTIFY_EJECT_REQUEST); + acpi_scan_lock_release(); return ret ? ret: count; } static DEVICE_ATTR(undock, S_IWUSR, NULL, write_undock); -- cgit v0.10.2 From 6ee22e9d59151550a55d370b14109bdae8b58bda Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 19 Jun 2013 00:44:45 +0200 Subject: ACPI / PM: Fix error code path for power resources initialization Commit 781d737 (ACPI: Drop power resources driver) introduced a bug in the power resources initialization error code path causing a NULL pointer to be referenced in acpi_release_power_resource() if there's an error triggering a jump to the 'err' label in acpi_add_power_resource(). This happens because the list_node field of struct acpi_power_resource has not been initialized yet at this point and doing a list_del() on it is a bad idea. To prevent this problem from occuring, initialize the list_node field of struct acpi_power_resource upfront. Reported-by: Mika Westerberg Tested-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki Cc: 3.9+ Acked-by: Yasuaki Ishimatsu Reviewed-by: Mika Westerberg diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index f962047..288bb27 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -885,6 +885,7 @@ int acpi_add_power_resource(acpi_handle handle) ACPI_STA_DEFAULT); mutex_init(&resource->resource_lock); INIT_LIST_HEAD(&resource->dependent); + INIT_LIST_HEAD(&resource->list_node); resource->name = device->pnp.bus_id; strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME); strcpy(acpi_device_class(device), ACPI_POWER_CLASS); -- cgit v0.10.2 From b9e95fc65ededbec083aa91b4faa58ad992c0891 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 19 Jun 2013 00:45:34 +0200 Subject: ACPI / LPSS: Power up LPSS devices during enumeration Commit 7cd8407 (ACPI / PM: Do not execute _PS0 for devices without _PSC during initialization) introduced a regression on some systems with Intel Lynxpoint Low-Power Subsystem (LPSS) where some devices need to be powered up during initialization, but their device objects in the ACPI namespace have _PS0 and _PS3 only (without _PSC or power resources). To work around this problem, make the ACPI LPSS driver power up devices it knows about by using a new helper function acpi_device_fix_up_power() that does all of the necessary sanity checks and calls acpi_dev_pm_explicit_set() to put the device into D0. Reported-and-tested-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 652fd5c..cab13f2 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -164,15 +164,24 @@ static int acpi_lpss_create_device(struct acpi_device *adev, if (dev_desc->clk_required) { ret = register_device_clock(adev, pdata); if (ret) { - /* - * Skip the device, but don't terminate the namespace - * scan. - */ - kfree(pdata); - return 0; + /* Skip the device, but continue the namespace scan. */ + ret = 0; + goto err_out; } } + /* + * This works around a known issue in ACPI tables where LPSS devices + * have _PS0 and _PS3 without _PSC (and no power resources), so + * acpi_bus_init_power() will assume that the BIOS has put them into D0. + */ + ret = acpi_device_fix_up_power(adev); + if (ret) { + /* Skip the device, but continue the namespace scan. */ + ret = 0; + goto err_out; + } + adev->driver_data = pdata; ret = acpi_create_platform_device(adev, id); if (ret > 0) diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index 318fa32..31c217a 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -290,6 +290,26 @@ int acpi_bus_init_power(struct acpi_device *device) return 0; } +/** + * acpi_device_fix_up_power - Force device with missing _PSC into D0. + * @device: Device object whose power state is to be fixed up. + * + * Devices without power resources and _PSC, but having _PS0 and _PS3 defined, + * are assumed to be put into D0 by the BIOS. However, in some cases that may + * not be the case and this function should be used then. + */ +int acpi_device_fix_up_power(struct acpi_device *device) +{ + int ret = 0; + + if (!device->power.flags.power_resources + && !device->power.flags.explicit_get + && device->power.state == ACPI_STATE_D0) + ret = acpi_dev_pm_explicit_set(device, ACPI_STATE_D0); + + return ret; +} + int acpi_bus_update_power(acpi_handle handle, int *state_p) { struct acpi_device *device; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 636c59f..c13c919 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -382,6 +382,7 @@ const char *acpi_power_state_string(int state); int acpi_device_get_power(struct acpi_device *device, int *state); int acpi_device_set_power(struct acpi_device *device, int state); int acpi_bus_init_power(struct acpi_device *device); +int acpi_device_fix_up_power(struct acpi_device *device); int acpi_bus_update_power(acpi_handle handle, int *state_p); bool acpi_bus_power_manageable(acpi_handle handle); -- cgit v0.10.2 From 35a2fbc941accd0e9f1bfadd669311786118d874 Mon Sep 17 00:00:00 2001 From: Anders Hammarquist Date: Wed, 19 Jun 2013 01:45:48 +0200 Subject: USB: serial: ti_usb_3410_5052: new device id for Abbot strip port cable Add product id for Abbott strip port cable for Precision meter which uses the TI 3410 chip. Signed-off-by: Anders Hammarquist Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index c92c5ed..e581c25 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -172,7 +172,8 @@ static struct usb_device_id ti_id_table_3410[15+TI_EXTRA_VID_PID_COUNT+1] = { { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, - { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, + { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, + { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, }; diff --git a/drivers/usb/serial/ti_usb_3410_5052.h b/drivers/usb/serial/ti_usb_3410_5052.h index b353e7e..4a2423e 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.h +++ b/drivers/usb/serial/ti_usb_3410_5052.h @@ -52,7 +52,9 @@ /* Abbott Diabetics vendor and product ids */ #define ABBOTT_VENDOR_ID 0x1a61 -#define ABBOTT_PRODUCT_ID 0x3410 +#define ABBOTT_STEREO_PLUG_ID 0x3410 +#define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID +#define ABBOTT_STRIP_PORT_ID 0x3420 /* Commands */ #define TI_GET_VERSION 0x01 -- cgit v0.10.2 From d13919301d9a34cd4d3cc5ac73b89012c48cad71 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 18 Jun 2013 10:04:59 -0700 Subject: net: fec: Fix build for MCF5272 Commits 4c09eed9 (net: fec: Enable imx6 enet checksum acceleration) and baa70a5c (net: fec: enable pause frame to improve rx prefomance for 1G network) introduced functionality into the FEC driver which is not supported on MCF5272. The registers used to implement this functionality do not exist on MCF5272. Since register defines for MCF5272 are separate from register defines for other chips, building images for MCF5272 fails as follows. fec_main.c: In function 'fec_restart': fec_main.c:520:8: error: 'FEC_RACC' undeclared (first use in this function) fec_main.c:585:3: error: 'FEC_R_FIFO_RSEM' undeclared (first use in this function) fec_main.c:586:3: error: 'FEC_R_FIFO_RSFL' undeclared (first use in this function) fec_main.c:587:3: error: 'FEC_R_FIFO_RAEM' undeclared (first use in this function) fec_main.c:588:3: error: 'FEC_R_FIFO_RAFL' undeclared (first use in this function) fec_main.c:591:3: error: 'FEC_OPD' undeclared (first use in this function) Adding the missing register defines is not an option, since the registers do not exist on MCF5272. Disable the added functionality for MCF5272 builds. Cc: Frank Li Cc: Jim Baxter Signed-off-by: Guenter Roeck Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index a667015..d48099f 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -516,6 +516,7 @@ fec_restart(struct net_device *ndev, int duplex) /* Set MII speed */ writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); +#if !defined(CONFIG_M5272) /* set RX checksum */ val = readl(fep->hwp + FEC_RACC); if (fep->csum_flags & FLAG_RX_CSUM_ENABLED) @@ -523,6 +524,7 @@ fec_restart(struct net_device *ndev, int duplex) else val &= ~FEC_RACC_OPTIONS; writel(val, fep->hwp + FEC_RACC); +#endif /* * The phy interface and speed need to get configured @@ -575,6 +577,7 @@ fec_restart(struct net_device *ndev, int duplex) #endif } +#if !defined(CONFIG_M5272) /* enable pause frame*/ if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) || ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) && @@ -592,6 +595,7 @@ fec_restart(struct net_device *ndev, int duplex) } else { rcntl &= ~FEC_ENET_FCE; } +#endif /* !defined(CONFIG_M5272) */ writel(rcntl, fep->hwp + FEC_R_CNTRL); @@ -1205,7 +1209,9 @@ static int fec_enet_mii_probe(struct net_device *ndev) /* mask with MAC supported features */ if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) { phy_dev->supported &= PHY_GBIT_FEATURES; +#if !defined(CONFIG_M5272) phy_dev->supported |= SUPPORTED_Pause; +#endif } else phy_dev->supported &= PHY_BASIC_FEATURES; @@ -1390,6 +1396,8 @@ static int fec_enet_get_ts_info(struct net_device *ndev, } } +#if !defined(CONFIG_M5272) + static void fec_enet_get_pauseparam(struct net_device *ndev, struct ethtool_pauseparam *pause) { @@ -1436,9 +1444,13 @@ static int fec_enet_set_pauseparam(struct net_device *ndev, return 0; } +#endif /* !defined(CONFIG_M5272) */ + static const struct ethtool_ops fec_enet_ethtool_ops = { +#if !defined(CONFIG_M5272) .get_pauseparam = fec_enet_get_pauseparam, .set_pauseparam = fec_enet_set_pauseparam, +#endif .get_settings = fec_enet_get_settings, .set_settings = fec_enet_set_settings, .get_drvinfo = fec_enet_get_drvinfo, @@ -1874,10 +1886,12 @@ fec_probe(struct platform_device *pdev) /* setup board info structure */ fep = netdev_priv(ndev); +#if !defined(CONFIG_M5272) /* default enable pause frame auto negotiation */ if (pdev->id_entry && (pdev->id_entry->driver_data & FEC_QUIRK_HAS_GBIT)) fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG; +#endif fep->hwp = devm_request_and_ioremap(&pdev->dev, r); fep->pdev = pdev; -- cgit v0.10.2 From 2bd470fc08cbbfd4f2e53a620362806620d217ed Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Wed, 19 Jun 2013 18:06:54 -0700 Subject: netlink: export netlink_diag.h header The netlink_diag.h is in include/uapi/linux but not in the Kbuild necessary to cause it to be exported by make headers_install. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index ab5d499..bdc6e87 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -261,6 +261,7 @@ header-y += net_dropmon.h header-y += net_tstamp.h header-y += netconf.h header-y += netdevice.h +header-y += netlink_diag.h header-y += netfilter.h header-y += netfilter_arp.h header-y += netfilter_bridge.h -- cgit v0.10.2 From 6d3d76f877ca061911343d5d1650458906fdf0ea Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Tue, 18 Jun 2013 15:04:35 +0530 Subject: drivers: net: cpsw: fix cpsw clock gating issue across suspend/resume Due to some hardware integration issue, CPSW sliver modules requires a reset across suspend/resume cycle for a successful clock gating to CPGMAC (CPSW and Davinci MDIO) in AM335x PG1.0. This issue is fixed in PG2.x, though to support suspend/resume on PG1.0 this reset is required. Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 2fd69db..e66a202 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1976,6 +1976,8 @@ static int cpsw_suspend(struct device *dev) if (netif_running(ndev)) cpsw_ndo_stop(ndev); + soft_reset("sliver 0", &priv->slaves[0].sliver->soft_reset); + soft_reset("sliver 1", &priv->slaves[1].sliver->soft_reset); pm_runtime_put_sync(&pdev->dev); return 0; -- cgit v0.10.2 From f5351ef73e476d7019fcd7a1c4461a153f663b4b Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Tue, 18 Jun 2013 07:03:23 +0200 Subject: stmmac: fix EEE setup This patch fixes the EEE setup allowing to configure this support when the link changes. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index 7788fbe..9517697 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -297,8 +297,8 @@ struct dma_features { #define MAC_RNABLE_RX 0x00000004 /* Receiver Enable */ /* Default LPI timers */ -#define STMMAC_DEFAULT_LIT_LS_TIMER 0x3E8 -#define STMMAC_DEFAULT_TWT_LS_TIMER 0x0 +#define STMMAC_DEFAULT_LIT_LS 0x3E8 +#define STMMAC_DEFAULT_TWT_LS 0x0 #define STMMAC_CHAIN_MODE 0x1 #define STMMAC_RING_MODE 0x2 diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index ee919ca..e9eab29 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -130,7 +130,7 @@ static const u32 default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE | static int eee_timer = STMMAC_DEFAULT_LPI_TIMER; module_param(eee_timer, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(eee_timer, "LPI tx expiration time in msec"); -#define STMMAC_LPI_TIMER(x) (jiffies + msecs_to_jiffies(x)) +#define STMMAC_LPI_T(x) (jiffies + msecs_to_jiffies(x)) /* By default the driver will use the ring mode to manage tx and rx descriptors * but passing this value so user can force to use the chain instead of the ring @@ -288,7 +288,7 @@ static void stmmac_eee_ctrl_timer(unsigned long arg) struct stmmac_priv *priv = (struct stmmac_priv *)arg; stmmac_enable_eee_mode(priv); - mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_TIMER(eee_timer)); + mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(eee_timer)); } /** @@ -304,22 +304,34 @@ bool stmmac_eee_init(struct stmmac_priv *priv) { bool ret = false; + /* Using PCS we cannot dial with the phy registers at this stage + * so we do not support extra feature like EEE. + */ + if ((priv->pcs == STMMAC_PCS_RGMII) || (priv->pcs == STMMAC_PCS_TBI) || + (priv->pcs == STMMAC_PCS_RTBI)) + goto out; + /* MAC core supports the EEE feature. */ if (priv->dma_cap.eee) { /* Check if the PHY supports EEE */ if (phy_init_eee(priv->phydev, 1)) goto out; - priv->eee_active = 1; - init_timer(&priv->eee_ctrl_timer); - priv->eee_ctrl_timer.function = stmmac_eee_ctrl_timer; - priv->eee_ctrl_timer.data = (unsigned long)priv; - priv->eee_ctrl_timer.expires = STMMAC_LPI_TIMER(eee_timer); - add_timer(&priv->eee_ctrl_timer); - - priv->hw->mac->set_eee_timer(priv->ioaddr, - STMMAC_DEFAULT_LIT_LS_TIMER, - priv->tx_lpi_timer); + if (!priv->eee_active) { + priv->eee_active = 1; + init_timer(&priv->eee_ctrl_timer); + priv->eee_ctrl_timer.function = stmmac_eee_ctrl_timer; + priv->eee_ctrl_timer.data = (unsigned long)priv; + priv->eee_ctrl_timer.expires = STMMAC_LPI_T(eee_timer); + add_timer(&priv->eee_ctrl_timer); + + priv->hw->mac->set_eee_timer(priv->ioaddr, + STMMAC_DEFAULT_LIT_LS, + priv->tx_lpi_timer); + } else + /* Set HW EEE according to the speed */ + priv->hw->mac->set_eee_pls(priv->ioaddr, + priv->phydev->link); pr_info("stmmac: Energy-Efficient Ethernet initialized\n"); @@ -329,20 +341,6 @@ out: return ret; } -/** - * stmmac_eee_adjust: adjust HW EEE according to the speed - * @priv: driver private structure - * Description: - * When the EEE has been already initialised we have to - * modify the PLS bit in the LPI ctrl & status reg according - * to the PHY link status. For this reason. - */ -static void stmmac_eee_adjust(struct stmmac_priv *priv) -{ - if (priv->eee_enabled) - priv->hw->mac->set_eee_pls(priv->ioaddr, priv->phydev->link); -} - /* stmmac_get_tx_hwtstamp: get HW TX timestamps * @priv: driver private structure * @entry : descriptor index to be used. @@ -769,7 +767,10 @@ static void stmmac_adjust_link(struct net_device *dev) if (new_state && netif_msg_link(priv)) phy_print_status(phydev); - stmmac_eee_adjust(priv); + /* At this stage, it could be needed to setup the EEE or adjust some + * MAC related HW registers. + */ + priv->eee_enabled = stmmac_eee_init(priv); spin_unlock_irqrestore(&priv->lock, flags); @@ -1277,7 +1278,7 @@ static void stmmac_tx_clean(struct stmmac_priv *priv) if ((priv->eee_enabled) && (!priv->tx_path_in_lpi_mode)) { stmmac_enable_eee_mode(priv); - mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_TIMER(eee_timer)); + mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(eee_timer)); } spin_unlock(&priv->tx_lock); } @@ -1671,14 +1672,9 @@ static int stmmac_open(struct net_device *dev) if (priv->phydev) phy_start(priv->phydev); - priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS_TIMER; + priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS; - /* Using PCS we cannot dial with the phy registers at this stage - * so we do not support extra feature like EEE. - */ - if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI && - priv->pcs != STMMAC_PCS_RTBI) - priv->eee_enabled = stmmac_eee_init(priv); + priv->eee_enabled = stmmac_eee_init(priv); stmmac_init_tx_coalesce(priv); -- cgit v0.10.2 From c0353c7b5da4cbd2ab8227e84bbc9c79890f24ce Mon Sep 17 00:00:00 2001 From: Aydin Arik Date: Fri, 14 Jun 2013 18:56:31 +1200 Subject: ipv4: Fixed MD5 key lookups when adding/ removing MD5 to/ from TCP sockets. MD5 key lookups on a given TCP socket were being performed incorrectly. This fix alters parameter inputs to the MD5 lookup function tcp_md5_do_lookup, which is called by functions tcp_md5_do_add and tcp_md5_do_del. Specifically, the change now inputs the correct address and address family required to make a proper lookup. Signed-off-by: Aydin Arik Signed-off-by: David S. Miller diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 7196523..7999fc5 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1003,7 +1003,7 @@ int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr, struct tcp_sock *tp = tcp_sk(sk); struct tcp_md5sig_info *md5sig; - key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET); + key = tcp_md5_do_lookup(sk, addr, family); if (key) { /* Pre-existing entry - just update that one. */ memcpy(key->key, newkey, newkeylen); @@ -1048,7 +1048,7 @@ int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family) struct tcp_md5sig_key *key; struct tcp_md5sig_info *md5sig; - key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET); + key = tcp_md5_do_lookup(sk, addr, family); if (!key) return -ENOENT; hlist_del_rcu(&key->node); -- cgit v0.10.2 From 906996d6eb8fbd5ee4241a0e8e0fb013423c934d Mon Sep 17 00:00:00 2001 From: David Daney Date: Wed, 19 Jun 2013 17:40:19 -0700 Subject: netdev: octeon_mgmt: Correct tx IFG workaround. The previous fix was still too agressive to meet ieee specs. Increase to (14, 10). Signed-off-by: David Daney Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/octeon/octeon_mgmt.c b/drivers/net/ethernet/octeon/octeon_mgmt.c index 921729f..a603faf 100644 --- a/drivers/net/ethernet/octeon/octeon_mgmt.c +++ b/drivers/net/ethernet/octeon/octeon_mgmt.c @@ -1141,10 +1141,13 @@ static int octeon_mgmt_open(struct net_device *netdev) /* For compensation state to lock. */ ndelay(1040 * NS_PER_PHY_CLK); - /* Some Ethernet switches cannot handle standard - * Interframe Gap, increase to 16 bytes. + /* Default Interframe Gaps are too small. Recommended + * workaround is. + * + * AGL_GMX_TX_IFG[IFG1]=14 + * AGL_GMX_TX_IFG[IFG2]=10 */ - cvmx_write_csr(CVMX_AGL_GMX_TX_IFG, 0x88); + cvmx_write_csr(CVMX_AGL_GMX_TX_IFG, 0xae); } octeon_mgmt_rx_fill_ring(netdev); -- cgit v0.10.2 From 3ac19c900cf4a46748d789c49d84a58c37b93841 Mon Sep 17 00:00:00 2001 From: David Daney Date: Wed, 19 Jun 2013 17:40:20 -0700 Subject: netdev: octeon_mgmt: Fix structure layout for little-endian. The C ABI reverses the bitfield fill order when compiled as little-endian. Signed-off-by: David Daney Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/octeon/octeon_mgmt.c b/drivers/net/ethernet/octeon/octeon_mgmt.c index a603faf..91a8a5d 100644 --- a/drivers/net/ethernet/octeon/octeon_mgmt.c +++ b/drivers/net/ethernet/octeon/octeon_mgmt.c @@ -46,17 +46,25 @@ union mgmt_port_ring_entry { u64 d64; struct { - u64 reserved_62_63:2; +#define RING_ENTRY_CODE_DONE 0xf +#define RING_ENTRY_CODE_MORE 0x10 +#ifdef __BIG_ENDIAN_BITFIELD + u64 reserved_62_63:2; /* Length of the buffer/packet in bytes */ - u64 len:14; + u64 len:14; /* For TX, signals that the packet should be timestamped */ - u64 tstamp:1; + u64 tstamp:1; /* The RX error code */ - u64 code:7; -#define RING_ENTRY_CODE_DONE 0xf -#define RING_ENTRY_CODE_MORE 0x10 + u64 code:7; /* Physical address of the buffer */ - u64 addr:40; + u64 addr:40; +#else + u64 addr:40; + u64 code:7; + u64 tstamp:1; + u64 len:14; + u64 reserved_62_63:2; +#endif } s; }; -- cgit v0.10.2 From 776fbcc9cbece10756bdb67b48a0798e6446f16b Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 18 Jun 2013 17:45:40 +0100 Subject: sfc: Remove write permission from phy_type attribute Driver probe currently results in: WARNING: at drivers/base/core.c:576 device_create_file+0x57/0x7e() Attribute phy_type: write permission without 'store' Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 39e4cb3..4a14a94 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -2139,7 +2139,7 @@ show_phy_type(struct device *dev, struct device_attribute *attr, char *buf) struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); return sprintf(buf, "%d\n", efx->phy_type); } -static DEVICE_ATTR(phy_type, 0644, show_phy_type, NULL); +static DEVICE_ATTR(phy_type, 0444, show_phy_type, NULL); static int efx_register_netdev(struct efx_nic *efx) { -- cgit v0.10.2 From 451bff2932a69e904f41a180145de1d2358bb8f5 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Tue, 18 Jun 2013 19:30:48 +0200 Subject: pxa168_eth: Allocate receive queue initialized to zero Zero pointer in rx_skb or tx_skb is how respective *_deinit() functions find out that a skb slot is unallocated. If *_init() functions unsuccessfully return after the allocation (e.g. when subsequent dma_alloc_coherent() is not successful), this would result in attempt to kfree() invalid pointers. Signed-off-by: Lubomir Rintel Cc: Kosta Zertsekel Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c index 339bb32..1c8af8b 100644 --- a/drivers/net/ethernet/marvell/pxa168_eth.c +++ b/drivers/net/ethernet/marvell/pxa168_eth.c @@ -1015,7 +1015,7 @@ static int rxq_init(struct net_device *dev) int rx_desc_num = pep->rx_ring_size; /* Allocate RX skb rings */ - pep->rx_skb = kmalloc(sizeof(*pep->rx_skb) * pep->rx_ring_size, + pep->rx_skb = kzalloc(sizeof(*pep->rx_skb) * pep->rx_ring_size, GFP_KERNEL); if (!pep->rx_skb) return -ENOMEM; @@ -1076,7 +1076,7 @@ static int txq_init(struct net_device *dev) int size = 0, i = 0; int tx_desc_num = pep->tx_ring_size; - pep->tx_skb = kmalloc(sizeof(*pep->tx_skb) * pep->tx_ring_size, + pep->tx_skb = kzalloc(sizeof(*pep->tx_skb) * pep->tx_ring_size, GFP_KERNEL); if (!pep->tx_skb) return -ENOMEM; -- cgit v0.10.2 From 9fa8e980bb0a56e46ddd97731f83f608c39aa7a5 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Tue, 18 Jun 2013 19:32:38 +0200 Subject: mv643xx_eth: Allocate receive queue initialized to zero Zero pointer in rx_skb is how respective rxq_deinit() finds out out that a skb slot is unallocated. If rxq_refill() fails (e.g. on OOM condition), subsequent teardown would result in an attempt to kfree() invalid pointers. Signed-off-by: Lubomir Rintel Cc: Lennert Buytenhek Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index 2ad1494..d1cbfb1 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -1757,7 +1757,7 @@ static int rxq_init(struct mv643xx_eth_private *mp, int index) memset(rxq->rx_desc_area, 0, size); rxq->rx_desc_area_size = size; - rxq->rx_skb = kmalloc_array(rxq->rx_ring_size, sizeof(*rxq->rx_skb), + rxq->rx_skb = kcalloc(rxq->rx_ring_size, sizeof(*rxq->rx_skb), GFP_KERNEL); if (rxq->rx_skb == NULL) goto out_free; -- cgit v0.10.2 From 8bbd9f04b7d982d1c6aeb5c08f5983b3d0b9e2fe Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Wed, 19 Jun 2013 12:04:26 +0530 Subject: powerpc: Fix bad pmd error with book3E config Book3E uses the hugepd at PMD level and don't encode pte directly at the pmd level. So it will find the lower bits of pmd set and the pmd_bad check throws error. Infact the current code will never take the free_hugepd_range call at all because it will clear the pmd if it find a hugepd pointer. Fix this by clearing bad pmd only if it is not a hugepd pointer. This is regression introduced by e2b3d202d1dba8f3546ed28224ce485bc50010be "powerpc: Switch 16GB and 16MB explicit hugepages to a different page table format" Reported-by: Scott Wood Signed-off-by: Aneesh Kumar K.V Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 237c8e5..77fdd2c 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -592,8 +592,14 @@ static void hugetlb_free_pmd_range(struct mmu_gather *tlb, pud_t *pud, do { pmd = pmd_offset(pud, addr); next = pmd_addr_end(addr, end); - if (pmd_none_or_clear_bad(pmd)) + if (!is_hugepd(pmd)) { + /* + * if it is not hugepd pointer, we should already find + * it cleared. + */ + WARN_ON(!pmd_none_or_clear_bad(pmd)); continue; + } #ifdef CONFIG_PPC_FSL_BOOK3E /* * Increment next by the size of the huge mapping since -- cgit v0.10.2 From a881ae1f625c599b460cc8f8a7fcb1c438f699ad Mon Sep 17 00:00:00 2001 From: Gao feng Date: Sun, 16 Jun 2013 11:14:30 +0800 Subject: ipv6: don't call addrconf_dst_alloc again when enable lo If we disable all of the net interfaces, and enable un-lo interface before lo interface, we already allocated the addrconf dst in ipv6_add_addr. So we shouldn't allocate it again when we enable lo interface. Otherwise the message below will be triggered. unregister_netdevice: waiting for sit1 to become free. Usage count = 1 This problem is introduced by commit 25fb6ca4ed9cad72f14f61629b68dc03c0d9713f "net IPv6 : Fix broken IPv6 routing table after loopback down-up" Signed-off-by: Gao feng Signed-off-by: David S. Miller diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 1bbf744..77b6261 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2655,6 +2655,9 @@ static void init_loopback(struct net_device *dev) if (sp_ifa->flags & (IFA_F_DADFAILED | IFA_F_TENTATIVE)) continue; + if (sp_ifa->rt) + continue; + sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, 0); /* Failure cases are ignored */ -- cgit v0.10.2 From a7bf58040f4e8a7245cb3e24ab93057be3c46363 Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Fri, 14 Jun 2013 17:07:01 +0200 Subject: net: vlan: fix comment for vlan_ethhdr->h_vlan_proto After addition of 8021AD h_vlan_proto can be either ETH_P_8021Q or ETH_P_8021AD. Signed-off-by: Olaf Hering Signed-off-by: David S. Miller diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index 52bd03b..637fa71d 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -44,7 +44,7 @@ struct vlan_hdr { * struct vlan_ethhdr - vlan ethernet header (ethhdr + vlan_hdr) * @h_dest: destination ethernet address * @h_source: source ethernet address - * @h_vlan_proto: ethernet protocol (always 0x8100) + * @h_vlan_proto: ethernet protocol * @h_vlan_TCI: priority and VLAN ID * @h_vlan_encapsulated_proto: packet type ID or len */ -- cgit v0.10.2 From 5f63adbb4cb9f952a8daee97f89c8811da5fd68a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Jun 2013 05:46:00 -0300 Subject: [media] s5p makefiles: don't override other selections on obj-[ym] The $obj-m/$obj-y vars should be adding new modules to build, not overriding it. So, it should never use $obj-y := foo.o instead, it should use: $obj-y += foo.o Failing to do that is very bad, as it will suppress needed modules. Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/platform/s5p-jpeg/Makefile b/drivers/media/platform/s5p-jpeg/Makefile index ddc2900..d18cb5e 100644 --- a/drivers/media/platform/s5p-jpeg/Makefile +++ b/drivers/media/platform/s5p-jpeg/Makefile @@ -1,2 +1,2 @@ s5p-jpeg-objs := jpeg-core.o -obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG) := s5p-jpeg.o +obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG) += s5p-jpeg.o diff --git a/drivers/media/platform/s5p-mfc/Makefile b/drivers/media/platform/s5p-mfc/Makefile index 379008c..15f59b3 100644 --- a/drivers/media/platform/s5p-mfc/Makefile +++ b/drivers/media/platform/s5p-mfc/Makefile @@ -1,4 +1,4 @@ -obj-$(CONFIG_VIDEO_SAMSUNG_S5P_MFC) := s5p-mfc.o +obj-$(CONFIG_VIDEO_SAMSUNG_S5P_MFC) += s5p-mfc.o s5p-mfc-y += s5p_mfc.o s5p_mfc_intr.o s5p-mfc-y += s5p_mfc_dec.o s5p_mfc_enc.o s5p-mfc-y += s5p_mfc_ctrl.o s5p_mfc_pm.o -- cgit v0.10.2 From abc41254181e901ef5eda2c884ca6cd88a186b6d Mon Sep 17 00:00:00 2001 From: Jed Davis Date: Thu, 20 Jun 2013 04:07:14 +0100 Subject: perf: arm64: Record the user-mode PC in the call chain. With this change, we no longer lose the innermost entry in the user-mode part of the call chain. See also the x86 port, which includes the ip, and the corresponding change in arch/arm. Signed-off-by: Jed Davis Acked-by: Ingo Molnar Acked-by: Will Deacon Cc: stable@vger.kernel.org Signed-off-by: Catalin Marinas diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 1e49e5eb..9ba33c4 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1336,6 +1336,7 @@ void perf_callchain_user(struct perf_callchain_entry *entry, return; } + perf_callchain_store(entry, regs->pc); tail = (struct frame_tail __user *)regs->regs[29]; while (entry->nr < PERF_MAX_STACK_DEPTH && -- cgit v0.10.2 From 142dcdd3c25fc7a3866bb06980e8f93a2ed7e050 Mon Sep 17 00:00:00 2001 From: Phil Oester Date: Wed, 19 Jun 2013 06:49:51 -0400 Subject: netfilter: nf_conntrack_ipv6: Plug sk_buff leak in fragment handling In commit 4cdd3408 ("netfilter: nf_conntrack_ipv6: improve fragmentation handling"), an sk_buff leak was introduced when dealing with reassembled packets by grabbing a reference to the original skb instead of the reassembled skb. At this point, the leak only impacted conntracks with an associated helper. In commit 58a317f1 ("netfilter: ipv6: add IPv6 NAT support"), the bug was expanded to include all reassembled packets with unconfirmed conntracks. Fix this by grabbing a reference to the proper reassembled skb. This closes netfilter bugzilla #823. Signed-off-by: Phil Oester Signed-off-by: Pablo Neira Ayuso diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c index 97bcf2b..c9b6a6e 100644 --- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c +++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c @@ -204,7 +204,7 @@ static unsigned int __ipv6_conntrack_in(struct net *net, if (ct != NULL && !nf_ct_is_untracked(ct)) { help = nfct_help(ct); if ((help && help->helper) || !nf_ct_is_confirmed(ct)) { - nf_conntrack_get_reasm(skb); + nf_conntrack_get_reasm(reasm); NF_HOOK_THRESH(NFPROTO_IPV6, hooknum, reasm, (struct net_device *)in, (struct net_device *)out, -- cgit v0.10.2 From b52e0a7c4e4100f8683af508664e60e1603070f9 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Thu, 6 Jun 2013 04:41:15 -0700 Subject: x86: Fix trigger_all_cpu_backtrace() implementation The following change fixes the x86 implementation of trigger_all_cpu_backtrace(), which was previously (accidentally, as far as I can tell) disabled to always return false as on architectures that do not implement this function. trigger_all_cpu_backtrace(), as defined in include/linux/nmi.h, should call arch_trigger_all_cpu_backtrace() if available, or return false if the underlying arch doesn't implement this function. x86 did provide a suitable arch_trigger_all_cpu_backtrace() implementation, but it wasn't actually being used because it was declared in asm/nmi.h, which linux/nmi.h doesn't include. Also, linux/nmi.h couldn't easily be fixed by including asm/nmi.h, because that file is not available on all architectures. I am proposing to fix this by moving the x86 definition of arch_trigger_all_cpu_backtrace() to asm/irq.h. Tested via: echo l > /proc/sysrq-trigger Before the change, this uses a fallback implementation which shows backtraces on active CPUs (using smp_call_function_interrupt() ) After the change, this shows NMI backtraces on all CPUs Signed-off-by: Michel Lespinasse Cc: Linus Torvalds Link: http://lkml.kernel.org/r/1370518875-1346-1-git-send-email-walken@google.com Signed-off-by: Ingo Molnar diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h index ba870bb..57873be 100644 --- a/arch/x86/include/asm/irq.h +++ b/arch/x86/include/asm/irq.h @@ -41,4 +41,9 @@ extern int vector_used_by_percpu_irq(unsigned int vector); extern void init_ISA_irqs(void); +#ifdef CONFIG_X86_LOCAL_APIC +void arch_trigger_all_cpu_backtrace(void); +#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace +#endif + #endif /* _ASM_X86_IRQ_H */ diff --git a/arch/x86/include/asm/nmi.h b/arch/x86/include/asm/nmi.h index c0fa356..86f9301 100644 --- a/arch/x86/include/asm/nmi.h +++ b/arch/x86/include/asm/nmi.h @@ -18,9 +18,7 @@ extern int proc_nmi_enabled(struct ctl_table *, int , void __user *, size_t *, loff_t *); extern int unknown_nmi_panic; -void arch_trigger_all_cpu_backtrace(void); -#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace -#endif +#endif /* CONFIG_X86_LOCAL_APIC */ #define NMI_FLAG_FIRST 1 diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c index 31cb9ae..a698d71 100644 --- a/arch/x86/kernel/apic/hw_nmi.c +++ b/arch/x86/kernel/apic/hw_nmi.c @@ -9,6 +9,7 @@ * */ #include +#include #include #include -- cgit v0.10.2 From 003002e04ed38618fc37b92ba128f5ca79d39f4f Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 5 Jun 2013 12:12:16 +0900 Subject: kprobes: Fix arch_prepare_kprobe to handle copy insn failures Fix arch_prepare_kprobe() to handle failures in copy instruction correctly. This fix is related to the previous fix: 8101376 which made __copy_instruction return an error result if failed, but caller site was not updated to handle it. Thus, this is the other half of the bugfix. This fix is also related to the following bug-report: https://bugzilla.redhat.com/show_bug.cgi?id=910649 Signed-off-by: Masami Hiramatsu Acked-by: Steven Rostedt Tested-by: Jonathan Lebon Cc: Frank Ch. Eigler Cc: systemtap@sourceware.org Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20130605031216.15285.2001.stgit@mhiramat-M0-7522 Signed-off-by: Ingo Molnar diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 9895a9a..211bce4 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -365,10 +365,14 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src) return insn.length; } -static void __kprobes arch_copy_kprobe(struct kprobe *p) +static int __kprobes arch_copy_kprobe(struct kprobe *p) { + int ret; + /* Copy an instruction with recovering if other optprobe modifies it.*/ - __copy_instruction(p->ainsn.insn, p->addr); + ret = __copy_instruction(p->ainsn.insn, p->addr); + if (!ret) + return -EINVAL; /* * __copy_instruction can modify the displacement of the instruction, @@ -384,6 +388,8 @@ static void __kprobes arch_copy_kprobe(struct kprobe *p) /* Also, displacement change doesn't affect the first byte */ p->opcode = p->ainsn.insn[0]; + + return 0; } int __kprobes arch_prepare_kprobe(struct kprobe *p) @@ -397,8 +403,8 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) p->ainsn.insn = get_insn_slot(); if (!p->ainsn.insn) return -ENOMEM; - arch_copy_kprobe(p); - return 0; + + return arch_copy_kprobe(p); } void __kprobes arch_arm_kprobe(struct kprobe *p) -- cgit v0.10.2 From 8b6fd652641e5ab1892d092e73e83d49291ed638 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 12 Jun 2013 19:30:27 +0800 Subject: irqchip: gic: call gic_cpu_init() as well in CPU_STARTING_FROZEN case Commit c011470 (irqchip: gic: Perform the gic_secondary_init() call via CPU notifier) moves gic_secondary_init() that used to be called in .smp_secondary_init hook into a notifier call. But it changes the system behavior a little bit. Before the commit, gic_cpu_init() is called not only when kernel brings up the secondary cores but also when system resuming procedure hot-plugs the cores back to kernel. While after the commit, the function will not be called in the latter case, where the 'action' will not be CPU_STARTING but CPU_STARTING_FROZEN. This behavior difference at least causes the following suspend/resume regression on imx6q. $ echo mem > /sys/power/state PM: Syncing filesystems ... done. PM: Preparing system for mem sleep mmc1: card e624 removed Freezing user space processes ... (elapsed 0.01 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. PM: Entering mem sleep PM: suspend of devices complete after 5.930 msecs PM: suspend devices took 0.010 seconds PM: late suspend of devices complete after 0.343 msecs PM: noirq suspend of devices complete after 0.828 msecs Disabling non-boot CPUs ... CPU1: shutdown CPU2: shutdown CPU3: shutdown Enabling non-boot CPUs ... CPU1: Booted secondary processor INFO: rcu_sched detected stalls on CPUs/tasks: { 1 2 3} (detected by 0, t=2102 jiffies, g=4294967169, c=4294967168, q=17) Task dump for CPU 1: swapper/1 R running 0 0 1 0x00000000 Backtrace: [] (0xbf895ff4) from [<00000000>] ( (null)) Backtrace aborted due to bad frame pointer <8007ccdc> Task dump for CPU 2: swapper/2 R running 0 0 1 0x00000000 Backtrace: [<8075dbdc>] (0x8075dbdc) from [<00000000>] ( (null)) Backtrace aborted due to bad frame pointer <00000002> Task dump for CPU 3: swapper/3 R running 0 0 1 0x00000000 Backtrace: [<8075dbdc>] (0x8075dbdc) from [<00000000>] ( (null)) Fix the regression by checking 'action' being CPU_STARTING_FROZEN to have gic_cpu_init() called for secondary cores when system resumes. Signed-off-by: Shawn Guo Acked-by: Catalin Marinas Tested-by: Joseph Lo Signed-off-by: Arnd Bergmann diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 1760ceb6..19ceaa6 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -705,7 +705,7 @@ static int gic_irq_domain_xlate(struct irq_domain *d, static int __cpuinit gic_secondary_init(struct notifier_block *nfb, unsigned long action, void *hcpu) { - if (action == CPU_STARTING) + if (action == CPU_STARTING || action == CPU_STARTING_FROZEN) gic_cpu_init(&gic_data[0]); return NOTIFY_OK; } -- cgit v0.10.2 From bb69ee27b96110c509d5b92c9ee541d81a821706 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Jun 2013 10:35:53 -0300 Subject: [media] Fix build when drivers are builtin and frontend modules There are a large number of reports that the media build is not compiling when some drivers are compiled as builtin, while the needed frontends are compiled as module. On the last one of such reports: From: kbuild test robot Subject: saa7134-dvb.c:undefined reference to `zl10039_attach' The .config file has: CONFIG_VIDEO_SAA7134=y CONFIG_VIDEO_SAA7134_DVB=y # CONFIG_MEDIA_ATTACH is not set CONFIG_DVB_ZL10039=m And it produces all those errors: drivers/built-in.o: In function `set_type': tuner-core.c:(.text+0x2f263e): undefined reference to `tea5767_attach' tuner-core.c:(.text+0x2f273e): undefined reference to `tda9887_attach' drivers/built-in.o: In function `tuner_probe': tuner-core.c:(.text+0x2f2d20): undefined reference to `tea5767_autodetection' drivers/built-in.o: In function `av7110_attach': av7110.c:(.text+0x330bda): undefined reference to `ves1x93_attach' av7110.c:(.text+0x330bf7): undefined reference to `stv0299_attach' av7110.c:(.text+0x330c63): undefined reference to `tda8083_attach' av7110.c:(.text+0x330d09): undefined reference to `ves1x93_attach' av7110.c:(.text+0x330d33): undefined reference to `tda8083_attach' av7110.c:(.text+0x330d5d): undefined reference to `stv0297_attach' av7110.c:(.text+0x330dbe): undefined reference to `stv0299_attach' drivers/built-in.o: In function `tuner_attach_dtt7520x': ngene-cards.c:(.text+0x3381cb): undefined reference to `dvb_pll_attach' drivers/built-in.o: In function `demod_attach_lg330x': ngene-cards.c:(.text+0x33828a): undefined reference to `lgdt330x_attach' drivers/built-in.o: In function `demod_attach_stv0900': ngene-cards.c:(.text+0x3383d5): undefined reference to `stv090x_attach' drivers/built-in.o: In function `cineS2_probe': ngene-cards.c:(.text+0x338b7f): undefined reference to `drxk_attach' drivers/built-in.o: In function `configure_tda827x_fe': saa7134-dvb.c:(.text+0x346ae7): undefined reference to `tda10046_attach' drivers/built-in.o: In function `dvb_init': saa7134-dvb.c:(.text+0x347283): undefined reference to `mt352_attach' saa7134-dvb.c:(.text+0x3472cd): undefined reference to `mt352_attach' saa7134-dvb.c:(.text+0x34731c): undefined reference to `tda10046_attach' saa7134-dvb.c:(.text+0x34733c): undefined reference to `tda10046_attach' saa7134-dvb.c:(.text+0x34735c): undefined reference to `tda10046_attach' saa7134-dvb.c:(.text+0x347378): undefined reference to `tda10046_attach' saa7134-dvb.c:(.text+0x3473db): undefined reference to `tda10046_attach' drivers/built-in.o:saa7134-dvb.c:(.text+0x347502): more undefined references to `tda10046_attach' follow drivers/built-in.o: In function `dvb_init': saa7134-dvb.c:(.text+0x347812): undefined reference to `mt352_attach' saa7134-dvb.c:(.text+0x347951): undefined reference to `mt312_attach' saa7134-dvb.c:(.text+0x3479a9): undefined reference to `mt312_attach' >> saa7134-dvb.c:(.text+0x3479c1): undefined reference to `zl10039_attach' This is happening because a builtin module can't use directly a symbol found on a module. By enabling CONFIG_MEDIA_ATTACH, the configuration becomes valid, as dvb_attach() macro loads the module if needed, making the symbol available to the builtin module. While this bug started to appear after the patches that use IS_DEFINED macro (like changeset 7b34be71db533f3e0cf93d53cf62d036cdb5418a), this bug is a way ancient than that. The thing is that, before the IS_DEFINED() patches, the logic used to be: && defined(MODULE)) struct dvb_frontend *zl10039_attach(struct dvb_frontend *fe, u8 i2c_addr, struct i2c_adapter *i2c); static inline struct dvb_frontend *zl10039_attach(struct dvb_frontend *fe, u8 i2c_addr, struct i2c_adapter *i2c) { printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); return NULL; } The above code, with the .config file used, was evoluting to FALSE (instead of TRUE as it should be, as CONFIG_DVB_ZL10039 is 'm'), and were adding the static inline code at saa7134-dvb, instead of the external call. So, while it weren't producing any compilation error, the code weren't working either. So, as the overhead for using CONFIG_MEDIA_ATTACH is minimal, just enable it, if MODULES is defined. Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig index 7f5a7ca..8270388 100644 --- a/drivers/media/Kconfig +++ b/drivers/media/Kconfig @@ -136,9 +136,9 @@ config DVB_NET # This Kconfig option is used by both PCI and USB drivers config TTPCI_EEPROM - tristate - depends on I2C - default n + tristate + depends on I2C + default n source "drivers/media/dvb-core/Kconfig" @@ -189,6 +189,12 @@ config MEDIA_SUBDRV_AUTOSELECT If unsure say Y. +config MEDIA_ATTACH + bool + depends on MEDIA_ANALOG_TV_SUPPORT || MEDIA_DIGITAL_TV_SUPPORT || MEDIA_RADIO_SUPPORT + depends on MODULES + default MODULES + source "drivers/media/i2c/Kconfig" source "drivers/media/tuners/Kconfig" source "drivers/media/dvb-frontends/Kconfig" diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig index f6768ca..15665de 100644 --- a/drivers/media/tuners/Kconfig +++ b/drivers/media/tuners/Kconfig @@ -1,23 +1,3 @@ -config MEDIA_ATTACH - bool "Load and attach frontend and tuner driver modules as needed" - depends on MEDIA_ANALOG_TV_SUPPORT || MEDIA_DIGITAL_TV_SUPPORT || MEDIA_RADIO_SUPPORT - depends on MODULES - default y if !EXPERT - help - Remove the static dependency of DVB card drivers on all - frontend modules for all possible card variants. Instead, - allow the card drivers to only load the frontend modules - they require. - - Also, tuner module will automatically load a tuner driver - when needed, for analog mode. - - This saves several KBytes of memory. - - Note: You will need module-init-tools v3.2 or later for this feature. - - If unsure say Y. - # Analog TV tuners, auto-loaded via tuner.ko config MEDIA_TUNER tristate -- cgit v0.10.2 From 7995bd287134f6c8f80d94bebe7396f05a9bc42b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 20 Jun 2013 18:58:36 +0400 Subject: splice: don't pass the address of ->f_pos to methods Signed-off-by: Al Viro diff --git a/fs/internal.h b/fs/internal.h index eaa75f7..6812158 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -132,6 +132,12 @@ extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *); /* + * splice.c + */ +extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, + loff_t *opos, size_t len, unsigned int flags); + +/* * pipe.c */ extern const struct file_operations pipefifo_fops; diff --git a/fs/read_write.c b/fs/read_write.c index 0343000..2cefa41 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1064,6 +1064,7 @@ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, struct fd in, out; struct inode *in_inode, *out_inode; loff_t pos; + loff_t out_pos; ssize_t retval; int fl; @@ -1077,12 +1078,14 @@ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, if (!(in.file->f_mode & FMODE_READ)) goto fput_in; retval = -ESPIPE; - if (!ppos) - ppos = &in.file->f_pos; - else + if (!ppos) { + pos = in.file->f_pos; + } else { + pos = *ppos; if (!(in.file->f_mode & FMODE_PREAD)) goto fput_in; - retval = rw_verify_area(READ, in.file, ppos, count); + } + retval = rw_verify_area(READ, in.file, &pos, count); if (retval < 0) goto fput_in; count = retval; @@ -1099,7 +1102,8 @@ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, retval = -EINVAL; in_inode = file_inode(in.file); out_inode = file_inode(out.file); - retval = rw_verify_area(WRITE, out.file, &out.file->f_pos, count); + out_pos = out.file->f_pos; + retval = rw_verify_area(WRITE, out.file, &out_pos, count); if (retval < 0) goto fput_out; count = retval; @@ -1107,7 +1111,6 @@ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, if (!max) max = min(in_inode->i_sb->s_maxbytes, out_inode->i_sb->s_maxbytes); - pos = *ppos; if (unlikely(pos + count > max)) { retval = -EOVERFLOW; if (pos >= max) @@ -1126,18 +1129,23 @@ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, if (in.file->f_flags & O_NONBLOCK) fl = SPLICE_F_NONBLOCK; #endif - retval = do_splice_direct(in.file, ppos, out.file, count, fl); + retval = do_splice_direct(in.file, &pos, out.file, &out_pos, count, fl); if (retval > 0) { add_rchar(current, retval); add_wchar(current, retval); fsnotify_access(in.file); fsnotify_modify(out.file); + out.file->f_pos = out_pos; + if (ppos) + *ppos = pos; + else + in.file->f_pos = pos; } inc_syscr(current); inc_syscw(current); - if (*ppos > max) + if (pos > max) retval = -EOVERFLOW; fput_out: diff --git a/fs/splice.c b/fs/splice.c index e6b2559..9eca476 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1274,7 +1274,7 @@ static int direct_splice_actor(struct pipe_inode_info *pipe, { struct file *file = sd->u.file; - return do_splice_from(pipe, file, &file->f_pos, sd->total_len, + return do_splice_from(pipe, file, sd->opos, sd->total_len, sd->flags); } @@ -1294,7 +1294,7 @@ static int direct_splice_actor(struct pipe_inode_info *pipe, * */ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, - size_t len, unsigned int flags) + loff_t *opos, size_t len, unsigned int flags) { struct splice_desc sd = { .len = len, @@ -1302,6 +1302,7 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, .flags = flags, .pos = *ppos, .u.file = out, + .opos = opos, }; long ret; @@ -1325,7 +1326,7 @@ static long do_splice(struct file *in, loff_t __user *off_in, { struct pipe_inode_info *ipipe; struct pipe_inode_info *opipe; - loff_t offset, *off; + loff_t offset; long ret; ipipe = get_pipe_info(in); @@ -1356,13 +1357,15 @@ static long do_splice(struct file *in, loff_t __user *off_in, return -EINVAL; if (copy_from_user(&offset, off_out, sizeof(loff_t))) return -EFAULT; - off = &offset; - } else - off = &out->f_pos; + } else { + offset = out->f_pos; + } - ret = do_splice_from(ipipe, out, off, len, flags); + ret = do_splice_from(ipipe, out, &offset, len, flags); - if (off_out && copy_to_user(off_out, off, sizeof(loff_t))) + if (!off_out) + out->f_pos = offset; + else if (copy_to_user(off_out, &offset, sizeof(loff_t))) ret = -EFAULT; return ret; @@ -1376,13 +1379,15 @@ static long do_splice(struct file *in, loff_t __user *off_in, return -EINVAL; if (copy_from_user(&offset, off_in, sizeof(loff_t))) return -EFAULT; - off = &offset; - } else - off = &in->f_pos; + } else { + offset = in->f_pos; + } - ret = do_splice_to(in, off, opipe, len, flags); + ret = do_splice_to(in, &offset, opipe, len, flags); - if (off_in && copy_to_user(off_in, off, sizeof(loff_t))) + if (!off_in) + in->f_pos = offset; + else if (copy_to_user(off_in, &offset, sizeof(loff_t))) ret = -EFAULT; return ret; diff --git a/include/linux/fs.h b/include/linux/fs.h index 43db02e..65c2be2 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2414,8 +2414,6 @@ extern ssize_t generic_file_splice_write(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int); extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe, struct file *out, loff_t *, size_t len, unsigned int flags); -extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, - size_t len, unsigned int flags); extern void file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping); diff --git a/include/linux/splice.h b/include/linux/splice.h index 09a545a..74575cb 100644 --- a/include/linux/splice.h +++ b/include/linux/splice.h @@ -35,6 +35,7 @@ struct splice_desc { void *data; /* cookie */ } u; loff_t pos; /* file position */ + loff_t *opos; /* sendfile: output position */ size_t num_spliced; /* number of bytes already spliced */ bool need_wakeup; /* need to wake up writer */ }; -- cgit v0.10.2 From 8b4d801b2b123b6c09742f861fe44a8527b84d47 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Thu, 20 Jun 2013 17:50:06 +0200 Subject: hw_breakpoint: Fix cpu check in task_bp_pinned(cpu) trinity fuzzer triggered WARN_ONCE("Can't find any breakpoint slot") in arch_install_hw_breakpoint() but the problem is not arch-specific. The problem is, task_bp_pinned(cpu) checks "cpu == iter->cpu" but this doesn't account the "all cpus" events with iter->cpu < 0. This means that, say, register_user_hw_breakpoint(tsk) can happily create the arbitrary number > HBP_NUM of breakpoints which can not be activated. toggle_bp_task_slot() is equally wrong by the same reason and nr_task_bp_pinned[] can have negative entries. Simple test: # perl -e 'sleep 1 while 1' & # perf record -e mem:0x10,mem:0x10,mem:0x10,mem:0x10,mem:0x10 -p `pidof perl` Before this patch this triggers the same problem/WARN_ON(), after the patch it correctly fails with -ENOSPC. Reported-by: Vince Weaver Signed-off-by: Oleg Nesterov Acked-by: Frederic Weisbecker Cc: Link: http://lkml.kernel.org/r/20130620155006.GA6324@redhat.com Signed-off-by: Ingo Molnar diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c index a64f8ae..a853dea 100644 --- a/kernel/events/hw_breakpoint.c +++ b/kernel/events/hw_breakpoint.c @@ -120,7 +120,7 @@ static int task_bp_pinned(int cpu, struct perf_event *bp, enum bp_type_idx type) list_for_each_entry(iter, &bp_task_head, hw.bp_list) { if (iter->hw.bp_target == tsk && find_slot_idx(iter) == type && - cpu == iter->cpu) + (iter->cpu < 0 || cpu == iter->cpu)) count += hw_breakpoint_weight(iter); } -- cgit v0.10.2 From c790b0ad23f427c7522ffed264706238c57c007e Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Thu, 20 Jun 2013 17:50:09 +0200 Subject: hw_breakpoint: Use cpu_possible_mask in {reserve,release}_bp_slot() fetch_bp_busy_slots() and toggle_bp_slot() use for_each_online_cpu(), this is obviously wrong wrt cpu_up() or cpu_down(), we can over/under account the per-cpu numbers. For example: # echo 0 >> /sys/devices/system/cpu/cpu1/online # perf record -e mem:0x10 -p 1 & # echo 1 >> /sys/devices/system/cpu/cpu1/online # perf record -e mem:0x10,mem:0x10,mem:0x10,mem:0x10 -C1 -a & # taskset -p 0x2 1 triggers the same WARN_ONCE("Can't find any breakpoint slot") in arch_install_hw_breakpoint(). Reported-by: Vince Weaver Signed-off-by: Oleg Nesterov Acked-by: Frederic Weisbecker Cc: Link: http://lkml.kernel.org/r/20130620155009.GA6327@redhat.com Signed-off-by: Ingo Molnar diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c index a853dea..20185ea 100644 --- a/kernel/events/hw_breakpoint.c +++ b/kernel/events/hw_breakpoint.c @@ -149,7 +149,7 @@ fetch_bp_busy_slots(struct bp_busy_slots *slots, struct perf_event *bp, return; } - for_each_online_cpu(cpu) { + for_each_possible_cpu(cpu) { unsigned int nr; nr = per_cpu(nr_cpu_bp_pinned[type], cpu); @@ -235,7 +235,7 @@ toggle_bp_slot(struct perf_event *bp, bool enable, enum bp_type_idx type, if (cpu >= 0) { toggle_bp_task_slot(bp, cpu, enable, type, weight); } else { - for_each_online_cpu(cpu) + for_each_possible_cpu(cpu) toggle_bp_task_slot(bp, cpu, enable, type, weight); } -- cgit v0.10.2 From 8444d5c69549aa0f0b574cc608742d4669e1cc01 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Wed, 19 Jun 2013 10:02:28 -0400 Subject: drm/radeon: update lockup tracking when scheduling in empty ring MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There might be issue with lockup detection when scheduling on an empty ring that have been sitting idle for a while. Thus update the lockup tracking data when scheduling new work in an empty ring. Signed-off-by: Jerome Glisse Tested-by: Andy Lutomirski Cc: stable@vger.kernel.org Reviewed-by: Christian König Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c index e17faa7..82434018 100644 --- a/drivers/gpu/drm/radeon/radeon_ring.c +++ b/drivers/gpu/drm/radeon/radeon_ring.c @@ -402,6 +402,13 @@ int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsi return -ENOMEM; /* Align requested size with padding so unlock_commit can * pad safely */ + radeon_ring_free_size(rdev, ring); + if (ring->ring_free_dw == (ring->ring_size / 4)) { + /* This is an empty ring update lockup info to avoid + * false positive. + */ + radeon_ring_lockup_update(ring); + } ndw = (ndw + ring->align_mask) & ~ring->align_mask; while (ndw > (ring->ring_free_dw - 1)) { radeon_ring_free_size(rdev, ring); -- cgit v0.10.2 From 58bd0c69ffa27ea2309959836811e88004d73720 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Wed, 29 May 2013 12:05:59 -0700 Subject: target/iscsi: Fix op=disable + error handling cases in np_store_iser Writing 0 when iser was not previously enabled, so succeed but do nothing so that user-space code doesn't need a try: catch block when ib_isert logic is not available. Also, return actual error from add_network_portal using PTR_ERR during op=enable failure. Signed-off-by: Andy Grover Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c index 13e9e71..fe4a5a20 100644 --- a/drivers/target/iscsi/iscsi_target_configfs.c +++ b/drivers/target/iscsi/iscsi_target_configfs.c @@ -155,7 +155,7 @@ static ssize_t lio_target_np_store_iser( struct iscsi_tpg_np *tpg_np_iser = NULL; char *endptr; u32 op; - int rc; + int rc = 0; op = simple_strtoul(page, &endptr, 0); if ((op != 1) && (op != 0)) { @@ -174,22 +174,25 @@ static ssize_t lio_target_np_store_iser( return -EINVAL; if (op) { - int rc = request_module("ib_isert"); - if (rc != 0) + rc = request_module("ib_isert"); + if (rc != 0) { pr_warn("Unable to request_module for ib_isert\n"); + rc = 0; + } tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr, np->np_ip, tpg_np, ISCSI_INFINIBAND); - if (!tpg_np_iser || IS_ERR(tpg_np_iser)) + if (IS_ERR(tpg_np_iser)) { + rc = PTR_ERR(tpg_np_iser); goto out; + } } else { tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND); - if (!tpg_np_iser) - goto out; - - rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser); - if (rc < 0) - goto out; + if (tpg_np_iser) { + rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser); + if (rc < 0) + goto out; + } } printk("lio_target_np_store_iser() done, op: %d\n", op); @@ -198,7 +201,7 @@ static ssize_t lio_target_np_store_iser( return count; out: iscsit_put_tpg(tpg); - return -EINVAL; + return rc; } TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR); -- cgit v0.10.2 From 58807a524782744aed5fb7b8fefac7134721331a Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 20 Jun 2013 16:36:17 -0700 Subject: iscsi-target: Remove left over v3.10-rc debug printks Reported-by: Andy Grover Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c index fe4a5a20..8d8b3ff 100644 --- a/drivers/target/iscsi/iscsi_target_configfs.c +++ b/drivers/target/iscsi/iscsi_target_configfs.c @@ -195,8 +195,6 @@ static ssize_t lio_target_np_store_iser( } } - printk("lio_target_np_store_iser() done, op: %d\n", op); - iscsit_put_tpg(tpg); return count; out: diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index bb5d5c5..3402241 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -984,8 +984,6 @@ int iscsi_target_setup_login_socket( } np->np_transport = t; - printk("Set np->np_transport to %p -> %s\n", np->np_transport, - np->np_transport->name); return 0; } @@ -1002,7 +1000,6 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn) conn->sock = new_sock; conn->login_family = np->np_sockaddr.ss_family; - printk("iSCSI/TCP: Setup conn->sock from new_sock: %p\n", new_sock); if (np->np_sockaddr.ss_family == AF_INET6) { memset(&sock_in6, 0, sizeof(struct sockaddr_in6)); diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c index 7ad9120..cd5018f 100644 --- a/drivers/target/iscsi/iscsi_target_nego.c +++ b/drivers/target/iscsi/iscsi_target_nego.c @@ -721,9 +721,6 @@ int iscsi_target_locate_portal( start += strlen(key) + strlen(value) + 2; } - - printk("i_buf: %s, s_buf: %s, t_buf: %s\n", i_buf, s_buf, t_buf); - /* * See 5.3. Login Phase. */ -- cgit v0.10.2 From b8cb62f82103083a6e8fa5470bfe634a2c06514d Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Sun, 16 Jun 2013 21:27:12 +0100 Subject: x86/efi: Fix dummy variable buffer allocation 1. Check for allocation failure 2. Clear the buffer contents, as they may actually be written to flash 3. Don't leak the buffer Compile-tested only. [ Tested successfully on my buggy ASUS machine - Matt ] Signed-off-by: Ben Hutchings Cc: stable@vger.kernel.org Signed-off-by: Matt Fleming diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 5ae2eb0..d2fbced 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -1069,7 +1069,10 @@ efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) * that by attempting to use more space than is available. */ unsigned long dummy_size = remaining_size + 1024; - void *dummy = kmalloc(dummy_size, GFP_ATOMIC); + void *dummy = kzalloc(dummy_size, GFP_ATOMIC); + + if (!dummy) + return EFI_OUT_OF_RESOURCES; status = efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, EFI_VARIABLE_NON_VOLATILE | @@ -1089,6 +1092,8 @@ efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) 0, dummy); } + kfree(dummy); + /* * The runtime code may now have triggered a garbage collection * run, so check the variable info again -- cgit v0.10.2 From cc0ee9873c6afafb387379ca1df25da78a08c603 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Thu, 20 Jun 2013 17:44:22 +0300 Subject: spi/pxa2xx: fix memory corruption due to wrong size used in devm_kzalloc() ACPI part of the driver accidentally used sizeof(*ssp) instead of the correct sizeof(*pdata). This leads to nasty memory corruptions like the one below: BUG: unable to handle kernel paging request at 0000000749fd30b8 IP: [] __list_del_entry+0x31/0xd0 PGD 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 30 Comm: kworker/0:1 Not tainted 3.10.0-rc6v3.10-rc6_sdhci_modprobe+ #443 task: ffff8801483a0940 ti: ffff88014839e000 task.ti: ffff88014839e000 RIP: 0010:[] [] __list_del_entry+0x31/0xd0 RSP: 0000:ffff88014839fde8 EFLAGS: 00010046 RAX: ffff880149fd30b0 RBX: ffff880149fd3040 RCX: dead000000200200 RDX: 0000000749fd30b0 RSI: ffff880149fd3058 RDI: ffff88014834d640 RBP: ffff88014839fde8 R08: ffff88014834d640 R09: 0000000000000001 R10: ffff8801483a0940 R11: 0000000000000001 R12: ffff880149fd3040 R13: ffffffff810e0b30 R14: ffff8801483a0940 R15: ffff88014834d640 FS: 0000000000000000(0000) GS:ffff880149e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 0000000001e0b000 CR4: 00000000001407f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: ffff88014839fe48 ffffffff810e0baf ffffffff81120abd ffff88014839fe20 ffff8801483a0940 ffff8801483a0940 ffff8801483a0940 ffff8801486b1c90 ffff88014834d640 ffffffff810e0b30 0000000000000000 0000000000000000 Call Trace: [] worker_thread+0x7f/0x390 [] ? trace_hardirqs_on+0xd/0x10 [] ? manage_workers.isra.22+0x2b0/0x2b0 [] kthread+0xd9/0xe0 [] ? local_clock+0x3f/0x50 [] ? kthread_create_on_node+0x110/0x110 [] ret_from_fork+0x7c/0xb0 [] ? kthread_create_on_node+0x110/0x110 Fix this by using the right structure size in devm_kzalloc(). Reported-by: Jerome Blin Signed-off-by: Mika Westerberg Signed-off-by: Mark Brown Cc: stable@vger.kernel.org # 3.9+ diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index f5d84d6..48b396f 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1075,7 +1075,7 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev)) return NULL; - pdata = devm_kzalloc(&pdev->dev, sizeof(*ssp), GFP_KERNEL); + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { dev_err(&pdev->dev, "failed to allocate memory for platform data\n"); -- cgit v0.10.2 From ea8deb8dfa6b0e8d1b3d1051585706739b46656c Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Mon, 17 Jun 2013 18:15:35 +0200 Subject: tick: Fix tick_broadcast_pending_mask not cleared The recent modification in the cpuidle framework consolidated the timer broadcast code across the different drivers by setting a new flag in the idle state. It tells the cpuidle core code to enter/exit the broadcast mode for the cpu when entering a deep idle state. The broadcast timer enter/exit is no longer handled by the back-end driver. This change made the local interrupt to be enabled *before* calling CLOCK_EVENT_NOTIFY_EXIT. On a tegra114, a four cores system, when the flag has been introduced in the driver, the following warning appeared: WARNING: at kernel/time/tick-broadcast.c:578 tick_broadcast_oneshot_control CPU: 2 PID: 0 Comm: swapper/2 Not tainted 3.10.0-rc3-next-20130529+ #15 [] (tick_broadcast_oneshot_control+0x1a4/0x1d0) from [] (tick_notify+0x240/0x40c) [] (tick_notify+0x240/0x40c) from [] (notifier_call_chain+0x44/0x84) [] (notifier_call_chain+0x44/0x84) from [] (raw_notifier_call_chain+0x18/0x20) [] (raw_notifier_call_chain+0x18/0x20) from [] (clockevents_notify+0x28/0x170) [] (clockevents_notify+0x28/0x170) from [] (cpuidle_idle_call+0x11c/0x168) [] (cpuidle_idle_call+0x11c/0x168) from [] (arch_cpu_idle+0x8/0x38) [] (arch_cpu_idle+0x8/0x38) from [] (cpu_startup_entry+0x60/0x134) [] (cpu_startup_entry+0x60/0x134) from [<804fe9a4>] (0x804fe9a4) I don't have the hardware, so I wasn't able to reproduce the warning but after looking a while at the code, I deduced the following: 1. the CPU2 enters a deep idle state and sets the broadcast timer 2. the timer expires, the tick_handle_oneshot_broadcast function is called, setting the tick_broadcast_pending_mask and waking up the idle cpu CPU2 3. the CPU2 exits idle handles the interrupt and then invokes tick_broadcast_oneshot_control with CLOCK_EVENT_NOTIFY_EXIT which runs the following code: [...] if (dev->next_event.tv64 == KTIME_MAX) goto out; if (cpumask_test_and_clear_cpu(cpu, tick_broadcast_pending_mask)) goto out; [...] So if there is no next event scheduled for CPU2, we fulfil the first condition and jump out without clearing the tick_broadcast_pending_mask. 4. CPU2 goes to deep idle again and calls tick_broadcast_oneshot_control with CLOCK_NOTIFY_EVENT_ENTER but with the tick_broadcast_pending_mask set for CPU2, triggering the warning. The issue only surfaced due to the modifications of the cpuidle framework, which resulted in interrupts being enabled before the call to the clockevents code. If the call happens before interrupts have been enabled, the warning cannot trigger, because there is still the event pending which caused the broadcast timer expiry. Move the check for the next event below the check for the pending bit, so the pending bit gets cleared whether an event is scheduled on the cpu or not. [ tglx: Massaged changelog ] Signed-off-by: Daniel Lezcano Reported-and-tested-by: Joseph Lo Cc: Stephen Warren Cc: linux-arm-kernel@lists.infradead.org Cc: linaro-kernel@lists.linaro.org Link: http://lkml.kernel.org/r/1371485735-31249-1-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Thomas Gleixner diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index b4c2455..20d6fba 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -599,8 +599,6 @@ void tick_broadcast_oneshot_control(unsigned long reason) } else { if (cpumask_test_and_clear_cpu(cpu, tick_broadcast_oneshot_mask)) { clockevents_set_mode(dev, CLOCK_EVT_MODE_ONESHOT); - if (dev->next_event.tv64 == KTIME_MAX) - goto out; /* * The cpu which was handling the broadcast * timer marked this cpu in the broadcast @@ -615,6 +613,11 @@ void tick_broadcast_oneshot_control(unsigned long reason) goto out; /* + * Bail out if there is no next event. + */ + if (dev->next_event.tv64 == KTIME_MAX) + goto out; + /* * If the pending bit is not set, then we are * either the CPU handling the broadcast * interrupt or we got woken by something else. -- cgit v0.10.2 From 945fb136dfcb5291b4fb2abd4fd1edf790de44ff Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 22 Jun 2013 11:01:38 +0400 Subject: aout32 coredump compat fix dump_seek() does SEEK_CUR, not SEEK_SET; native binfmt_aout handles it correctly (seeks by PAGE_SIZE - sizeof(struct user), getting the current position to PAGE_SIZE), compat one seeks by PAGE_SIZE and ends up at PAGE_SIZE + already written... Signed-off-by: Al Viro diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 805078e..52ff81c 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -192,7 +192,7 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, /* struct user */ DUMP_WRITE(&dump, sizeof(dump)); /* Now dump all of the user data. Include malloced stuff as well */ - DUMP_SEEK(PAGE_SIZE); + DUMP_SEEK(PAGE_SIZE - sizeof(dump)); /* now we start writing out the user space info */ set_fs(USER_DS); /* Dump the data area */ -- cgit v0.10.2 From 9e895ace5d82df8929b16f58e9f515f6d54ab82d Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 22 Jun 2013 09:47:31 -1000 Subject: Linux 3.10-rc7 diff --git a/Makefile b/Makefile index c6863b5..0142c93 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 10 SUBLEVEL = 0 -EXTRAVERSION = -rc6 +EXTRAVERSION = -rc7 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v0.10.2 From 94add0f82469fa3c4ff978d03a34da90813c819d Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sun, 23 Jun 2013 00:59:55 +0200 Subject: ACPI / dock: Initialize ACPI dock subsystem upfront Commit 3b63aaa70e1 (PCI: acpiphp: Do not use ACPI PCI subdriver mechanism) introduced an ACPI dock support regression, because it changed the relative initialization order of the ACPI dock subsystem and the ACPI-based PCI hotplug (acpiphp). Namely, the ACPI dock subsystem has to be initialized before acpiphp_enumerate_slots() is first run, which after commit 3b63aaa70e1 happens during the initial enumeration of the PCI hierarchy triggered by the initial ACPI namespace scan in acpi_scan_init(). For this reason, the dock subsystem has to be initialized before the initial ACPI namespace scan in acpi_scan_init(). To make that happen, modify the ACPI dock subsystem to be non-modular and add the invocation of its initialization routine, acpi_dock_init(), to acpi_scan_init() directly before the initial namespace scan. [rjw: Changelog, removal of dock_exit().] References: https://bugzilla.kernel.org/show_bug.cgi?id=59501 Reported-and-tested-by: Alexander E. Patrakov Tested-by: Illya Klymov Signed-off-by: Jiang Liu Acked-by: Yinghai Lu Cc: 3.9+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index ec117c6..c3b34f9 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -994,30 +994,6 @@ err_unregister: } /** - * dock_remove - free up resources related to the dock station - */ -static int dock_remove(struct dock_station *ds) -{ - struct dock_dependent_device *dd, *tmp; - struct platform_device *dock_device = ds->dock_device; - - if (!dock_station_count) - return 0; - - /* remove dependent devices */ - list_for_each_entry_safe(dd, tmp, &ds->dependent_devices, list) - kfree(dd); - - list_del(&ds->sibling); - - /* cleanup sysfs */ - sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); - platform_device_unregister(dock_device); - - return 0; -} - -/** * find_dock_and_bay - look for dock stations and bays * @handle: acpi handle of a device * @lvl: unused @@ -1035,7 +1011,7 @@ find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv) return AE_OK; } -static int __init dock_init(void) +int __init acpi_dock_init(void) { if (acpi_disabled) return 0; @@ -1054,19 +1030,3 @@ static int __init dock_init(void) ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count); return 0; } - -static void __exit dock_exit(void) -{ - struct dock_station *tmp, *dock_station; - - unregister_acpi_bus_notifier(&dock_acpi_notifier); - list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibling) - dock_remove(dock_station); -} - -/* - * Must be called before drivers of devices in dock, otherwise we can't know - * which devices are in a dock - */ -subsys_initcall(dock_init); -module_exit(dock_exit); diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 297cbf4..c610a76 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -40,6 +40,11 @@ void acpi_container_init(void); #else static inline void acpi_container_init(void) {} #endif +#ifdef CONFIG_ACPI_DOCK +void acpi_dock_init(void); +#else +static inline void acpi_dock_init(void) {} +#endif #ifdef CONFIG_ACPI_HOTPLUG_MEMORY void acpi_memory_hotplug_init(void); #else diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index b14ac46..27da630 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2042,6 +2042,7 @@ int __init acpi_scan_init(void) acpi_lpss_init(); acpi_container_init(); acpi_memory_hotplug_init(); + acpi_dock_init(); mutex_lock(&acpi_scan_lock); /* -- cgit v0.10.2 From d66ecb7220a70ec3f6c0e38e4af28fb8b25d31c6 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sun, 23 Jun 2013 01:01:35 +0200 Subject: PCI / ACPI: Use boot-time resource allocation rules during hotplug On x86 platforms, the kernel respects PCI resource assignments from the BIOS and only reassigns resources for unassigned BARs at boot time. However, with the ACPI-based hotplug (acpiphp), it ignores the BIOS' PCI resource assignments completely and reassigns all resources by itself. This causes differences in PCI resource allocation between boot time and runtime hotplug to occur, which is generally undesirable and sometimes actively breaks things. Namely, if there are enough resources, reassigning all PCI resources during runtime hotplug should work, but it may fail if the resources are constrained. This may happen, for instance, when some PCI devices with huge MMIO BARs are involved in the runtime hotplug operations, because the current PCI MMIO alignment algorithm may waste huge chunks of MMIO address space in those cases. On the Alexander's Sony VAIO VPCZ23A4R the BIOS allocates limited MMIO resources for the dock station which contains a device (graphics adapter) with a 256MB MMIO BAR. An attempt to reassign that during runtime hotplug causes the dock station MMIO window to be exhausted and acpiphp fails to allocate resources for the majority of devices on the dock station as a result. To prevent that from happening, modify acpiphp to follow the boot time resources allocation behavior so that the BIOS' resource assignments are respected during runtime hotplug too. [rjw: Changelog] References: https://bugzilla.kernel.org/show_bug.cgi?id=56531 Reported-and-tested-by: Alexander E. Patrakov Tested-by: Illya Klymov Signed-off-by: Jiang Liu Acked-by: Yinghai Lu Cc: 3.9+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 716aa93..050b6f9 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -670,6 +670,7 @@ static int __ref enable_device(struct acpiphp_slot *slot) struct pci_bus *bus = slot->bridge->pci_bus; struct acpiphp_func *func; int num, max, pass; + LIST_HEAD(add_list); if (slot->flags & SLOT_ENABLED) goto err_exit; @@ -694,13 +695,15 @@ static int __ref enable_device(struct acpiphp_slot *slot) max = pci_scan_bridge(bus, dev, max, pass); if (pass && dev->subordinate) { check_hotplug_bridge(slot, dev); - pci_bus_size_bridges(dev->subordinate); + pcibios_resource_survey_bus(dev->subordinate); + __pci_bus_size_bridges(dev->subordinate, + &add_list); } } } } - pci_bus_assign_resources(bus); + __pci_bus_assign_resources(bus, &add_list, NULL); acpiphp_sanitize_bus(bus); acpiphp_set_hpp_values(bus); acpiphp_set_acpi_region(slot); diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 68678ed..d1182c4 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -202,6 +202,11 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, struct resource *res, unsigned int reg); int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type); void pci_configure_ari(struct pci_dev *dev); +void __ref __pci_bus_size_bridges(struct pci_bus *bus, + struct list_head *realloc_head); +void __ref __pci_bus_assign_resources(const struct pci_bus *bus, + struct list_head *realloc_head, + struct list_head *fail_head); /** * pci_ari_enabled - query ARI forwarding status diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 16abaaa..d254e23 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1044,7 +1044,7 @@ handle_done: ; } -static void __ref __pci_bus_size_bridges(struct pci_bus *bus, +void __ref __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head) { struct pci_dev *dev; @@ -1115,9 +1115,9 @@ void __ref pci_bus_size_bridges(struct pci_bus *bus) } EXPORT_SYMBOL(pci_bus_size_bridges); -static void __ref __pci_bus_assign_resources(const struct pci_bus *bus, - struct list_head *realloc_head, - struct list_head *fail_head) +void __ref __pci_bus_assign_resources(const struct pci_bus *bus, + struct list_head *realloc_head, + struct list_head *fail_head) { struct pci_bus *b; struct pci_dev *dev; -- cgit v0.10.2 From 3f6fa3d489e127ca5a5b298eabac3ff5dbe0e112 Mon Sep 17 00:00:00 2001 From: Jaganath Kanakkassery Date: Fri, 21 Jun 2013 19:55:11 +0530 Subject: Bluetooth: Fix invalid length check in l2cap_information_rsp() The length check is invalid since the length varies with type of info response. This was introduced by the commit cb3b3152b2f5939d67005cff841a1ca748b19888 Because of this, l2cap info rsp is not handled and command reject is sent. > ACL data: handle 11 flags 0x02 dlen 16 L2CAP(s): Info rsp: type 2 result 0 Extended feature mask 0x00b8 Enhanced Retransmission mode Streaming mode FCS Option Fixed Channels < ACL data: handle 11 flags 0x00 dlen 10 L2CAP(s): Command rej: reason 0 Command not understood Cc: stable@vger.kernel.org Signed-off-by: Jaganath Kanakkassery Signed-off-by: Chan-Yeol Park Acked-by: Johan Hedberg Signed-off-by: Gustavo Padovan diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 4be6a26..68843a2 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -4333,7 +4333,7 @@ static inline int l2cap_information_rsp(struct l2cap_conn *conn, struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data; u16 type, result; - if (cmd_len != sizeof(*rsp)) + if (cmd_len < sizeof(*rsp)) return -EPROTO; type = __le16_to_cpu(rsp->type); -- cgit v0.10.2 From acdb37c361dc87e165889a504e291c1e82ae133c Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sat, 22 Jun 2013 19:44:08 -0700 Subject: fs: fix new splice.c kernel-doc warning Fix new kernel-doc warning in fs/splice.c: Warning(fs/splice.c:1298): No description found for parameter 'opos' Signed-off-by: Randy Dunlap Cc: Al Viro Signed-off-by: Linus Torvalds diff --git a/fs/splice.c b/fs/splice.c index 9eca476..d37431d 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1283,6 +1283,7 @@ static int direct_splice_actor(struct pipe_inode_info *pipe, * @in: file to splice from * @ppos: input file offset * @out: file to splice to + * @opos: output file offset * @len: number of bytes to splice * @flags: splice modifier flags * -- cgit v0.10.2 From f9bd2d7f6d18d96fa31a657f35290741117c0dd3 Mon Sep 17 00:00:00 2001 From: Amir Vadai Date: Thu, 20 Jun 2013 14:58:10 +0300 Subject: net/mlx_en: Timestamping is not supported in slave mode Old hypervisors don't mask out timestamp capability for slave. Till slave support will be added, need to disable capability by slave. Signed-off-by: Amir Vadai Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 2f4a260..8a43499 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -632,6 +632,9 @@ static int mlx4_slave_cap(struct mlx4_dev *dev) dev->caps.cqe_size = 32; } + dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; + mlx4_warn(dev, "Timestamping is not supported in slave mode.\n"); + slave_adjust_steering_mode(dev, &dev_cap, &hca_param); return 0; -- cgit v0.10.2 From db4e9b2b98bac7adc7657ef94bb6d1a419a35571 Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Thu, 20 Jun 2013 14:34:13 +0200 Subject: bonding: fix slave speed reporting in bond_miimon_commit When we have BOND_LINK_UP the speed is reported unconditionally with %u format although it can be SPEED_UNKNOWN (-1). After this patch it returns 0 in that case in an attempt to keep the existing scripts happy. One line is intenionally left 81 chars because it gets ugly if broken. Signed-off-by: Nikolay Aleksandrov Acked-by: Veaceslav Falico Signed-off-by: David S. Miller diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 02d9ae7..f975696 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2413,7 +2413,8 @@ static void bond_miimon_commit(struct bonding *bond) pr_info("%s: link status definitely up for interface %s, %u Mbps %s duplex.\n", bond->dev->name, slave->dev->name, - slave->speed, slave->duplex ? "full" : "half"); + slave->speed == SPEED_UNKNOWN ? 0 : slave->speed, + slave->duplex ? "full" : "half"); /* notify ad that the link status has changed */ if (bond->params.mode == BOND_MODE_8023AD) -- cgit v0.10.2 From 14bd076955f4e9cb911326d1b7291e3a2b40bdec Mon Sep 17 00:00:00 2001 From: Sebastian Siewior Date: Thu, 20 Jun 2013 16:58:45 +0200 Subject: net: eth: davicnci_cpdma: check dma map error Since the DMA mapping may fail the caller should check the return value. Cc: Mugunthan V N Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index 49dfd59..053c84f 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -705,6 +705,13 @@ int cpdma_chan_submit(struct cpdma_chan *chan, void *token, void *data, } buffer = dma_map_single(ctlr->dev, data, len, chan->dir); + ret = dma_mapping_error(ctlr->dev, buffer); + if (ret) { + cpdma_desc_free(ctlr->pool, desc, 1); + ret = -EINVAL; + goto unlock_ret; + } + mode = CPDMA_DESC_OWNER | CPDMA_DESC_SOP | CPDMA_DESC_EOP; cpdma_desc_to_port(chan, mode, directed); -- cgit v0.10.2 From 8afe3dc891c4dec2ebddbba6f3767684f95ac2f9 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 20 Jun 2013 16:10:59 -0500 Subject: qmi_wwan: add various Novatel Gobi1K IDs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Found in the Windows INF files while investigating the Novatel/Verizon USB-1000 device. The USB-1000 is verified as a Gobi1K device and works with QMI after loading appropriate firmware. Signed-off-by: Dan Williams Acked-by: Bjørn Mork Signed-off-by: David S. Miller diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index d095d0d..5645921 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -590,7 +590,13 @@ static const struct usb_device_id products[] = { {QMI_GOBI1K_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */ {QMI_GOBI1K_DEVICE(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */ {QMI_GOBI1K_DEVICE(0x413c, 0x8172)}, /* Dell Gobi Modem device */ - {QMI_GOBI1K_DEVICE(0x1410, 0xa001)}, /* Novatel Gobi Modem device */ + {QMI_GOBI1K_DEVICE(0x1410, 0xa001)}, /* Novatel/Verizon USB-1000 */ + {QMI_GOBI1K_DEVICE(0x1410, 0xa002)}, /* Novatel Gobi Modem device */ + {QMI_GOBI1K_DEVICE(0x1410, 0xa003)}, /* Novatel Gobi Modem device */ + {QMI_GOBI1K_DEVICE(0x1410, 0xa004)}, /* Novatel Gobi Modem device */ + {QMI_GOBI1K_DEVICE(0x1410, 0xa005)}, /* Novatel Gobi Modem device */ + {QMI_GOBI1K_DEVICE(0x1410, 0xa006)}, /* Novatel Gobi Modem device */ + {QMI_GOBI1K_DEVICE(0x1410, 0xa007)}, /* Novatel Gobi Modem device */ {QMI_GOBI1K_DEVICE(0x0b05, 0x1776)}, /* Asus Gobi Modem device */ {QMI_GOBI1K_DEVICE(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */ {QMI_GOBI1K_DEVICE(0x05c6, 0x9001)}, /* Generic Gobi Modem device */ -- cgit v0.10.2 From ca8c35852138ee0585eaffe6b9f10a5261ea7771 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Fri, 21 Jun 2013 01:12:21 +0400 Subject: sh_eth: fix unhandled RFE interrupt EESR.RFE (receive FIFO overflow) interrupt is enabled by the driver on all SoCs and sh_eth_error() handles it but it's not present in any initializer/assignment of the 'eesr_err_check' field of 'struct sh_eth_cpu_data'. This leads to that interrupt not being handled and cleared, and finally to disabling IRQ and the driver being non-functional. Modify DEFAULT_EESR_ERR_CHECK macro and all explicit initializers of the above mentioned field to contain the EESR.RFE bit. Remove useless backslashes from the initializers, while at it. Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 5e3982f..d9c21dd 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -380,8 +380,9 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = { .eesipr_value = 0x01ff009f, .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, - .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | - EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, + .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | + EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | + EESR_ECI, .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, .apr = 1, @@ -427,8 +428,9 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = { .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f, .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, - .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | - EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, + .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | + EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | + EESR_ECI, .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, .apr = 1, @@ -478,8 +480,9 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = { .rmcr_value = 0x00000001, .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, - .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | - EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, + .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | + EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | + EESR_ECI, .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, .apr = 1, @@ -592,9 +595,9 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data_giga = { .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, .tx_check = EESR_TC1 | EESR_FTC, - .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ - EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ - EESR_ECI, + .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | + EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE | + EESR_TDE | EESR_ECI, .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ EESR_TFE, .fdr_value = 0x0000072f, @@ -674,9 +677,9 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = { .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, .tx_check = EESR_TC1 | EESR_FTC, - .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ - EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ - EESR_ECI, + .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | + EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE | + EESR_TDE | EESR_ECI, .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ EESR_TFE, @@ -811,9 +814,9 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = { .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, .tx_check = EESR_TC1 | EESR_FTC, - .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ - EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ - EESR_ECI, + .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | + EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE | + EESR_TDE | EESR_ECI, .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ EESR_TFE, diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h index 1ddc9f2..62689a5 100644 --- a/drivers/net/ethernet/renesas/sh_eth.h +++ b/drivers/net/ethernet/renesas/sh_eth.h @@ -253,7 +253,7 @@ enum EESR_BIT { #define DEFAULT_TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | \ EESR_RTO) -#define DEFAULT_EESR_ERR_CHECK (EESR_TWB | EESR_TABT | EESR_RABT | \ +#define DEFAULT_EESR_ERR_CHECK (EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | \ EESR_RDE | EESR_RFRMER | EESR_ADE | \ EESR_TFE | EESR_TDE | EESR_ECI) #define DEFAULT_TX_ERROR_CHECK (EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | \ -- cgit v0.10.2 From 4eb313a7a939a983c525648227b5fe0a9d41679f Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Fri, 21 Jun 2013 01:13:42 +0400 Subject: sh_eth: fix misreporting of transmit abort Due to obviously missing braces, EESR.TABT (transmit abort) interrupt may be reported even if it hasn't happened, just when EESR.TWB (transmit descriptor write-back) interrupt happens. Luckily (?), EESR.TWB is disabled by the driver via the TRIMD register and all the interrupt masks, so that transmit abort is never actually logged... Put the braces where they should be and fix the incoherent comment, while at it. Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index d9c21dd..e29fe8d 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1552,11 +1552,12 @@ static void sh_eth_error(struct net_device *ndev, int intr_status) ignore_link: if (intr_status & EESR_TWB) { - /* Write buck end. unused write back interrupt */ - if (intr_status & EESR_TABT) /* Transmit Abort int */ + /* Unused write back interrupt */ + if (intr_status & EESR_TABT) { /* Transmit Abort int */ ndev->stats.tx_aborted_errors++; if (netif_msg_tx_err(mdp)) dev_err(&ndev->dev, "Transmit Abort\n"); + } } if (intr_status & EESR_RABT) { -- cgit v0.10.2 From a3c910d2e796ce878231350b904105261a8cf09c Mon Sep 17 00:00:00 2001 From: Shan Wei Date: Fri, 21 Jun 2013 15:18:32 +0800 Subject: tcp: doc : fix the syncookies default value syncookies is on for default since in commit e994b7c901 (tcp: Don't make syn cookies initial setting depend on CONFIG_SYSCTL). And fix a typo of CONFIG_SYN_COOKIES. Signed-off-by: Shan Wei Signed-off-by: David S. Miller diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index f98ca63..3458d63 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -420,10 +420,10 @@ tcp_synack_retries - INTEGER for a passive TCP connection will happen after 63seconds. tcp_syncookies - BOOLEAN - Only valid when the kernel was compiled with CONFIG_SYNCOOKIES + Only valid when the kernel was compiled with CONFIG_SYN_COOKIES Send out syncookies when the syn backlog queue of a socket overflows. This is to prevent against the common 'SYN flood attack' - Default: FALSE + Default: 1 Note, that syncookies is fallback facility. It MUST NOT be used to help highly loaded servers to stand -- cgit v0.10.2 From b90fc27a64a57b273351ceef7ae298558ff8a6ac Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Fri, 21 Jun 2013 19:15:09 +0530 Subject: drivers: net: cpsw: fix compilation error with cpsw driver drivers/net/ethernet/ti/cpsw.c: In function 'cpsw_suspend': drivers/net/ethernet/ti/cpsw.c:1979:26: error: 'priv' undeclared (first use in this function) drivers/net/ethernet/ti/cpsw.c:1979:26: note: each undeclared identifier is reported only once for each function it appears in make[4]: *** [drivers/net/ethernet/ti/cpsw.o] Error 1 The compilation error was introduced by the following commit 6d3d76f (drivers: net: cpsw: fix cpsw clock gating issue across suspend/resume) Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index e66a202..d1a769f 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1973,6 +1973,7 @@ static int cpsw_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct net_device *ndev = platform_get_drvdata(pdev); + struct cpsw_priv *priv = netdev_priv(ndev); if (netif_running(ndev)) cpsw_ndo_stop(ndev); -- cgit v0.10.2 From f57da7a65b386dd4535daa4f7a3773a025fbb022 Mon Sep 17 00:00:00 2001 From: Shahed Shaikh Date: Fri, 21 Jun 2013 12:09:42 -0400 Subject: qlcnic: Do not sleep while holding spinlock This patch reverts commit a4791254b6625b06aa33e36304f6e8a1a4a1fdea ("qlcnic: change mdelay to msleep") which overwrote a commit 68b3f28c11bf896be32ad2a2e151aaa5f4a7c98e ("qlcnic: Fix scheduling while atomic bug") Signed-off-by: Shahed Shaikh Signed-off-by: Jitendra Kalsaria Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c index 43562c2..6acf82b 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c @@ -642,7 +642,7 @@ void qlcnic_fw_destroy_ctx(struct qlcnic_adapter *adapter) qlcnic_83xx_config_intrpt(adapter, 0); } /* Allow dma queues to drain after context reset */ - msleep(20); + mdelay(20); } } -- cgit v0.10.2 From eda4ddf7e3a2245888e8c45c566fd514cdd5abbb Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Fri, 21 Jun 2013 13:21:30 +0200 Subject: s390/ipl: Fix FCP WWPN and LUN format strings for read The following git commit changed the behavior of sscanf: commit 53809751ac230a3611b5cdd375f3389f3207d471 Author: Jan Beulich Date: Mon Dec 17 16:01:31 2012 -0800 sscanf: don't ignore field widths for numeric conversions This broke the WWPN and LUN sysfs attributes for s390 reipl and dump on panic. Example: $ echo 0x0123456701234567 > /sys/firmware/reipl/fcp/wwpn $ cat /sys/firmware/reipl/fcp/wwpn 0x0001234567012345 So fix this and use format strings that work also with the new sscanf implementation: $ echo 0x012345670123456789 > /sys/firmware/reipl/fcp/wwpn $ cat /sys/firmware/reipl/fcp/wwpn 0x0123456701234567 Cc: stable@vger.kernel.org # 3.8+ Reviewed-by: Steffen Maier Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index d8a6a38..feb719d 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -754,9 +754,9 @@ static struct bin_attribute sys_reipl_fcp_scp_data_attr = { .write = reipl_fcp_scpdata_write, }; -DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n", +DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n", reipl_block_fcp->ipl_info.fcp.wwpn); -DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n", +DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n", reipl_block_fcp->ipl_info.fcp.lun); DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", reipl_block_fcp->ipl_info.fcp.bootprog); @@ -1323,9 +1323,9 @@ static struct shutdown_action __refdata reipl_action = { /* FCP dump device attributes */ -DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n", +DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n", dump_block_fcp->ipl_info.fcp.wwpn); -DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n", +DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n", dump_block_fcp->ipl_info.fcp.lun); DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", dump_block_fcp->ipl_info.fcp.bootprog); -- cgit v0.10.2 From 21a31013f774c726bd199526cd673acc6432b21d Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 24 Jun 2013 11:22:53 +0200 Subject: ACPI / dock / PCI: Synchronous handling of dock events for PCI devices The interactions between the ACPI dock driver and the ACPI-based PCI hotplug (acpiphp) are currently problematic because of ordering issues during hot-remove operations. First of all, the current ACPI glue code expects that physical devices will always be deleted before deleting the companion ACPI device objects. Otherwise, acpi_unbind_one() will fail with a warning message printed to the kernel log, for example: [ 185.026073] usb usb5: Oops, 'acpi_handle' corrupt [ 185.035150] pci 0000:1b:00.0: Oops, 'acpi_handle' corrupt [ 185.035515] pci 0000:18:02.0: Oops, 'acpi_handle' corrupt [ 180.013656] port1: Oops, 'acpi_handle' corrupt This means, in particular, that struct pci_dev objects have to be deleted before the struct acpi_device objects they are "glued" with. Now, the following happens the during the undocking of an ACPI-based dock station: 1) hotplug_dock_devices() invokes registered hotplug callbacks to destroy physical devices associated with the ACPI device objects depending on the dock station. It calls dd->ops->handler() for each of those device objects. 2) For PCI devices dd->ops->handler() points to handle_hotplug_event_func() that queues up a separate work item to execute _handle_hotplug_event_func() for the given device and returns immediately. That work item will be executed later. 3) hotplug_dock_devices() calls dock_remove_acpi_device() for each device depending on the dock station. This runs acpi_bus_trim() for each of them, which causes the underlying ACPI device object to be destroyed, but the work items queued up by handle_hotplug_event_func() haven't been started yet. 4) _handle_hotplug_event_func() queued up in step 2) are executed and cause the above failure to happen, because the PCI devices they handle do not have the companion ACPI device objects any more (those objects have been deleted in step 3). The possible breakage doesn't end here, though, because hotplug_dock_devices() may return before at least some of the _handle_hotplug_event_func() work items spawned by it have a chance to complete and then undock() will cause _DCK to be evaluated and that will cause the devices handled by the _handle_hotplug_event_func() to go away possibly while they are being accessed. This means that dd->ops->handler() for PCI devices should not point to handle_hotplug_event_func(). Instead, it should point to a function that will do the work of _handle_hotplug_event_func() synchronously. For this reason, introduce such a function, hotplug_event_func(), and modity acpiphp_dock_ops to point to it as the handler. Unfortunately, however, this is not sufficient, because if the dock code were not changed further, hotplug_event_func() would now deadlock with hotplug_dock_devices() that called it, since it would run unregister_hotplug_dock_device() which in turn would attempt to acquire the dock station's hp_lock mutex already acquired by hotplug_dock_devices(). To resolve that deadlock use the observation that unregister_hotplug_dock_device() won't need to acquire hp_lock if PCI bridges the devices on the dock station depend on are prevented from being removed prematurely while the first loop in hotplug_dock_devices() is in progress. To make that possible, introduce a mechanism by which the callers of register_hotplug_dock_device() can provide "init" and "release" routines that will be executed, respectively, during the addition and removal of the physical device object associated with the given ACPI device handle. Make acpiphp use two new functions, acpiphp_dock_init() and acpiphp_dock_release(), that call get_bridge() and put_bridge(), respectively, on the acpiphp bridge holding the given device, for this purpose. In addition to that, remove the dock station's list of "hotplug devices" and make the dock code always walk the whole list of "dependent devices" instead in such a way that the loops in hotplug_dock_devices() and dock_event() (replacing the loops over "hotplug devices") will take references to the list entries that register_hotplug_dock_device() has been called for. That prevents the "release" routines associated with those entries from being called while the given entry is being processed and for PCI devices this means that their bridges won't be removed (by a concurrent thread) while hotplug_event_func() handling them is being executed. This change is based on two earlier patches from Jiang Liu. References: https://bugzilla.kernel.org/show_bug.cgi?id=59501 Reported-and-tested-by: Alexander E. Patrakov Tracked-down-by: Jiang Liu Tested-by: Illya Klymov Signed-off-by: Rafael J. Wysocki Acked-by: Yinghai Lu Cc: 3.9+ diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index c3b34f9..14de9f4 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -66,20 +66,21 @@ struct dock_station { spinlock_t dd_lock; struct mutex hp_lock; struct list_head dependent_devices; - struct list_head hotplug_devices; struct list_head sibling; struct platform_device *dock_device; }; static LIST_HEAD(dock_stations); static int dock_station_count; +static DEFINE_MUTEX(hotplug_lock); struct dock_dependent_device { struct list_head list; - struct list_head hotplug_list; acpi_handle handle; - const struct acpi_dock_ops *ops; - void *context; + const struct acpi_dock_ops *hp_ops; + void *hp_context; + unsigned int hp_refcount; + void (*hp_release)(void *); }; #define DOCK_DOCKING 0x00000001 @@ -111,7 +112,6 @@ add_dock_dependent_device(struct dock_station *ds, acpi_handle handle) dd->handle = handle; INIT_LIST_HEAD(&dd->list); - INIT_LIST_HEAD(&dd->hotplug_list); spin_lock(&ds->dd_lock); list_add_tail(&dd->list, &ds->dependent_devices); @@ -121,35 +121,90 @@ add_dock_dependent_device(struct dock_station *ds, acpi_handle handle) } /** - * dock_add_hotplug_device - associate a hotplug handler with the dock station - * @ds: The dock station - * @dd: The dependent device struct - * - * Add the dependent device to the dock's hotplug device list + * dock_init_hotplug - Initialize a hotplug device on a docking station. + * @dd: Dock-dependent device. + * @ops: Dock operations to attach to the dependent device. + * @context: Data to pass to the @ops callbacks and @release. + * @init: Optional initialization routine to run after setting up context. + * @release: Optional release routine to run on removal. */ -static void -dock_add_hotplug_device(struct dock_station *ds, - struct dock_dependent_device *dd) +static int dock_init_hotplug(struct dock_dependent_device *dd, + const struct acpi_dock_ops *ops, void *context, + void (*init)(void *), void (*release)(void *)) { - mutex_lock(&ds->hp_lock); - list_add_tail(&dd->hotplug_list, &ds->hotplug_devices); - mutex_unlock(&ds->hp_lock); + int ret = 0; + + mutex_lock(&hotplug_lock); + + if (dd->hp_context) { + ret = -EEXIST; + } else { + dd->hp_refcount = 1; + dd->hp_ops = ops; + dd->hp_context = context; + dd->hp_release = release; + } + + if (!WARN_ON(ret) && init) + init(context); + + mutex_unlock(&hotplug_lock); + return ret; } /** - * dock_del_hotplug_device - remove a hotplug handler from the dock station - * @ds: The dock station - * @dd: the dependent device struct + * dock_release_hotplug - Decrement hotplug reference counter of dock device. + * @dd: Dock-dependent device. * - * Delete the dependent device from the dock's hotplug device list + * Decrement the reference counter of @dd and if 0, detach its hotplug + * operations from it, reset its context pointer and run the optional release + * routine if present. */ -static void -dock_del_hotplug_device(struct dock_station *ds, - struct dock_dependent_device *dd) +static void dock_release_hotplug(struct dock_dependent_device *dd) { - mutex_lock(&ds->hp_lock); - list_del(&dd->hotplug_list); - mutex_unlock(&ds->hp_lock); + void (*release)(void *) = NULL; + void *context = NULL; + + mutex_lock(&hotplug_lock); + + if (dd->hp_context && !--dd->hp_refcount) { + dd->hp_ops = NULL; + context = dd->hp_context; + dd->hp_context = NULL; + release = dd->hp_release; + dd->hp_release = NULL; + } + + if (release && context) + release(context); + + mutex_unlock(&hotplug_lock); +} + +static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, + bool uevent) +{ + acpi_notify_handler cb = NULL; + bool run = false; + + mutex_lock(&hotplug_lock); + + if (dd->hp_context) { + run = true; + dd->hp_refcount++; + if (dd->hp_ops) + cb = uevent ? dd->hp_ops->uevent : dd->hp_ops->handler; + } + + mutex_unlock(&hotplug_lock); + + if (!run) + return; + + if (cb) + cb(dd->handle, event, dd->hp_context); + + dock_release_hotplug(dd); } /** @@ -360,9 +415,8 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event) /* * First call driver specific hotplug functions */ - list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) - if (dd->ops && dd->ops->handler) - dd->ops->handler(dd->handle, event, dd->context); + list_for_each_entry(dd, &ds->dependent_devices, list) + dock_hotplug_event(dd, event, false); /* * Now make sure that an acpi_device is created for each @@ -398,9 +452,8 @@ static void dock_event(struct dock_station *ds, u32 event, int num) if (num == DOCK_EVENT) kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); - list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) - if (dd->ops && dd->ops->uevent) - dd->ops->uevent(dd->handle, event, dd->context); + list_for_each_entry(dd, &ds->dependent_devices, list) + dock_hotplug_event(dd, event, true); if (num != DOCK_EVENT) kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); @@ -570,19 +623,24 @@ EXPORT_SYMBOL_GPL(unregister_dock_notifier); * @handle: the handle of the device * @ops: handlers to call after docking * @context: device specific data + * @init: Optional initialization routine to run after registration + * @release: Optional release routine to run on unregistration * * If a driver would like to perform a hotplug operation after a dock * event, they can register an acpi_notifiy_handler to be called by * the dock driver after _DCK is executed. */ -int -register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops, - void *context) +int register_hotplug_dock_device(acpi_handle handle, + const struct acpi_dock_ops *ops, void *context, + void (*init)(void *), void (*release)(void *)) { struct dock_dependent_device *dd; struct dock_station *dock_station; int ret = -EINVAL; + if (WARN_ON(!context)) + return -EINVAL; + if (!dock_station_count) return -ENODEV; @@ -597,12 +655,8 @@ register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops * ops */ dd = find_dock_dependent_device(dock_station, handle); - if (dd) { - dd->ops = ops; - dd->context = context; - dock_add_hotplug_device(dock_station, dd); + if (dd && !dock_init_hotplug(dd, ops, context, init, release)) ret = 0; - } } return ret; @@ -624,7 +678,7 @@ void unregister_hotplug_dock_device(acpi_handle handle) list_for_each_entry(dock_station, &dock_stations, sibling) { dd = find_dock_dependent_device(dock_station, handle); if (dd) - dock_del_hotplug_device(dock_station, dd); + dock_release_hotplug(dd); } } EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device); @@ -953,7 +1007,6 @@ static int __init dock_add(acpi_handle handle) mutex_init(&dock_station->hp_lock); spin_lock_init(&dock_station->dd_lock); INIT_LIST_HEAD(&dock_station->sibling); - INIT_LIST_HEAD(&dock_station->hotplug_devices); ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list); INIT_LIST_HEAD(&dock_station->dependent_devices); diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 050b6f9..59df857 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -61,6 +61,7 @@ static DEFINE_MUTEX(bridge_mutex); static void handle_hotplug_event_bridge (acpi_handle, u32, void *); static void acpiphp_sanitize_bus(struct pci_bus *bus); static void acpiphp_set_hpp_values(struct pci_bus *bus); +static void hotplug_event_func(acpi_handle handle, u32 type, void *context); static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context); static void free_bridge(struct kref *kref); @@ -147,7 +148,7 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val, static const struct acpi_dock_ops acpiphp_dock_ops = { - .handler = handle_hotplug_event_func, + .handler = hotplug_event_func, }; /* Check whether the PCI device is managed by native PCIe hotplug driver */ @@ -179,6 +180,20 @@ static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev) return true; } +static void acpiphp_dock_init(void *data) +{ + struct acpiphp_func *func = data; + + get_bridge(func->slot->bridge); +} + +static void acpiphp_dock_release(void *data) +{ + struct acpiphp_func *func = data; + + put_bridge(func->slot->bridge); +} + /* callback routine to register each ACPI PCI slot object */ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) @@ -298,7 +313,8 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) */ newfunc->flags &= ~FUNC_HAS_EJ0; if (register_hotplug_dock_device(handle, - &acpiphp_dock_ops, newfunc)) + &acpiphp_dock_ops, newfunc, + acpiphp_dock_init, acpiphp_dock_release)) dbg("failed to register dock device\n"); /* we need to be notified when dock events happen @@ -1068,22 +1084,12 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type, alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_bridge); } -static void _handle_hotplug_event_func(struct work_struct *work) +static void hotplug_event_func(acpi_handle handle, u32 type, void *context) { - struct acpiphp_func *func; + struct acpiphp_func *func = context; char objname[64]; struct acpi_buffer buffer = { .length = sizeof(objname), .pointer = objname }; - struct acpi_hp_work *hp_work; - acpi_handle handle; - u32 type; - - hp_work = container_of(work, struct acpi_hp_work, work); - handle = hp_work->handle; - type = hp_work->type; - func = (struct acpiphp_func *)hp_work->context; - - acpi_scan_lock_acquire(); acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); @@ -1116,6 +1122,18 @@ static void _handle_hotplug_event_func(struct work_struct *work) warn("notify_handler: unknown event type 0x%x for %s\n", type, objname); break; } +} + +static void _handle_hotplug_event_func(struct work_struct *work) +{ + struct acpi_hp_work *hp_work; + struct acpiphp_func *func; + + hp_work = container_of(work, struct acpi_hp_work, work); + func = hp_work->context; + acpi_scan_lock_acquire(); + + hotplug_event_func(hp_work->handle, hp_work->type, func); acpi_scan_lock_release(); kfree(hp_work); /* allocated in handle_hotplug_event_func */ diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h index e6168a2..b420939 100644 --- a/include/acpi/acpi_drivers.h +++ b/include/acpi/acpi_drivers.h @@ -123,7 +123,9 @@ extern int register_dock_notifier(struct notifier_block *nb); extern void unregister_dock_notifier(struct notifier_block *nb); extern int register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops, - void *context); + void *context, + void (*init)(void *), + void (*release)(void *)); extern void unregister_hotplug_dock_device(acpi_handle handle); #else static inline int is_dock_device(acpi_handle handle) @@ -139,7 +141,9 @@ static inline void unregister_dock_notifier(struct notifier_block *nb) } static inline int register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops, - void *context) + void *context, + void (*init)(void *), + void (*release)(void *)) { return -ENODEV; } -- cgit v0.10.2 From 5aed93875cd88502f04a0d4517b8a2d89a849773 Mon Sep 17 00:00:00 2001 From: Balazs Peter Odor Date: Sat, 22 Jun 2013 19:24:43 +0200 Subject: netfilter: nf_nat_sip: fix mangling In (b20ab9c netfilter: nf_ct_helper: better logging for dropped packets) there were some missing brackets around the logging information, thus always returning drop. Closes https://bugzilla.kernel.org/show_bug.cgi?id=60061 Signed-off-by: Balazs Peter Odor Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nf_nat_sip.c b/net/netfilter/nf_nat_sip.c index 96ccdf7..dac11f7 100644 --- a/net/netfilter/nf_nat_sip.c +++ b/net/netfilter/nf_nat_sip.c @@ -230,9 +230,10 @@ static unsigned int nf_nat_sip(struct sk_buff *skb, unsigned int protoff, &ct->tuplehash[!dir].tuple.src.u3, false); if (!mangle_packet(skb, protoff, dataoff, dptr, datalen, - poff, plen, buffer, buflen)) + poff, plen, buffer, buflen)) { nf_ct_helper_log(skb, ct, "cannot mangle received"); return NF_DROP; + } } /* The rport= parameter (RFC 3581) contains the port number -- cgit v0.10.2 From 797a7d66d2048fe8a4ac1ba58c5d4752d64b1ac4 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Fri, 21 Jun 2013 16:51:30 +0200 Subject: netfilter: ctnetlink: send event when conntrack label was modified commit 0ceabd83875b72a29f33db4ab703d6ba40ea4c58 (netfilter: ctnetlink: deliver labels to userspace) sets the event bit when we raced with another packet, instead of raising the event bit when the label bit is set for the first time. commit 9b21f6a90924dfe8e5e686c314ddb441fb06501e (netfilter: ctnetlink: allow userspace to modify labels) forgot to update the event mask in the "conntrack already exists" case. Both issues result in CTA_LABELS attribute not getting included in the conntrack event. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nf_conntrack_labels.c b/net/netfilter/nf_conntrack_labels.c index 8fe2e99..355d2ef 100644 --- a/net/netfilter/nf_conntrack_labels.c +++ b/net/netfilter/nf_conntrack_labels.c @@ -45,7 +45,7 @@ int nf_connlabel_set(struct nf_conn *ct, u16 bit) if (test_bit(bit, labels->bits)) return 0; - if (test_and_set_bit(bit, labels->bits)) + if (!test_and_set_bit(bit, labels->bits)) nf_conntrack_event_cache(IPCT_LABEL, ct); return 0; diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 6d0f8a1..ecf065f 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -1825,6 +1825,7 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, nf_conntrack_eventmask_report((1 << IPCT_REPLY) | (1 << IPCT_ASSURED) | (1 << IPCT_HELPER) | + (1 << IPCT_LABEL) | (1 << IPCT_PROTOINFO) | (1 << IPCT_NATSEQADJ) | (1 << IPCT_MARK), -- cgit v0.10.2 From ec8da805c43a6cc0252dad0ff6e348c731e0b138 Mon Sep 17 00:00:00 2001 From: Marc Dietrich Date: Mon, 10 Jun 2013 22:27:55 +0200 Subject: mfd: tps6586x: correct device name of the regulator cell Change the device name of the regulator function to the one chosen for MODULE_ALIAS. This fixes kernel auto-module loading for the regulator function. Signed-off-by: Marc Dietrich Signed-off-by: Mark Brown diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 721b918..4b93ed4 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -107,7 +107,7 @@ static struct mfd_cell tps6586x_cell[] = { .name = "tps6586x-gpio", }, { - .name = "tps6586x-pmic", + .name = "tps6586x-regulator", }, { .name = "tps6586x-rtc", diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c index d8fa37d..2c9155b 100644 --- a/drivers/regulator/tps6586x-regulator.c +++ b/drivers/regulator/tps6586x-regulator.c @@ -439,7 +439,7 @@ static int tps6586x_regulator_remove(struct platform_device *pdev) static struct platform_driver tps6586x_regulator_driver = { .driver = { - .name = "tps6586x-pmic", + .name = "tps6586x-regulator", .owner = THIS_MODULE, }, .probe = tps6586x_regulator_probe, -- cgit v0.10.2 From 8182a34d85698d2fb696bfdafa21140916fd5d47 Mon Sep 17 00:00:00 2001 From: Jonas Jensen Date: Tue, 18 Jun 2013 09:20:50 +0100 Subject: ARM: 7760/1: cpu_fa526_do_idle: remove WFI As it was already suggested by Russell King and Arnd Bergmann: https://lkml.org/lkml/2013/5/16/133 moxart and gemini seem to be the only platforms using CPU_FA526, and instead of pointing arm_pm_idle to an empty function from platform code, it makes sense to remove WFI code from the processor specific idle function. Applies to arm-soc/for-next (and 3.10-rc1). Changes since v1: 1. remove WFI but make sure cpu_fa526_do_idle do not fall through to cpu_fa526_dcache_clean_area Note: moxart boots and prints to UART without this patch, but input is broken. Signed-off-by: Jonas Jensen Signed-off-by: Russell King diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S index d217e97..aaeb6c1 100644 --- a/arch/arm/mm/proc-fa526.S +++ b/arch/arm/mm/proc-fa526.S @@ -81,7 +81,6 @@ ENDPROC(cpu_fa526_reset) */ .align 4 ENTRY(cpu_fa526_do_idle) - mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt mov pc, lr -- cgit v0.10.2 From 1ba9bf0a9ae779c1a2b3eb64951e4161d9bad7a9 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Wed, 19 Jun 2013 10:36:26 +0100 Subject: ARM: 7762/1: kernel: fix arm_dt_init_cpu_maps() to skip non-cpu nodes The introduction of the cpu-map topology node in the cpus node implies that cpus node might have children that are not cpu nodes. The DT parsing code needs updating otherwise it would check for cpu nodes properties in nodes that are not required to contain them, resulting in warnings that have no bearing on bindings defined in the dts source file. Cc: [3.8+] Signed-off-by: Lorenzo Pieralisi Acked-by: Nicolas Pitre Signed-off-by: Russell King diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index 5af04f6..904cad5 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -92,6 +92,9 @@ void __init arm_dt_init_cpu_maps(void) for_each_child_of_node(cpus, cpu) { u32 hwid; + if (of_node_cmp(cpu->type, "cpu")) + continue; + pr_debug(" * %s...\n", cpu->full_name); /* * A device tree containing CPU nodes with missing "reg" -- cgit v0.10.2 From 18d7f152df31e5a326301fdaad385e40874dff80 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Wed, 19 Jun 2013 10:40:48 +0100 Subject: ARM: 7763/1: kernel: fix __cpu_logical_map default initialization The __cpu_logical_map array is statically initialized to 0, which is a valid MPIDR value. To prevent issues with the current implementation, this patch defines an MPIDR_INVALID value, and statically initializes the __cpu_logical_map[] array to it. Entries in the arm_dt_init_cpu_maps() tmp_map array used to stash DT reg properties while parsing DT are initialized with the MPIDR_INVALID value as well for consistency. Signed-off-by: Lorenzo Pieralisi Acked-by: Nicolas Pitre Cc: Will Deacon Signed-off-by: Russell King diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index 7652712..dba62cb 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -32,6 +32,8 @@ #define MPIDR_HWID_BITMASK 0xFFFFFF +#define MPIDR_INVALID (~MPIDR_HWID_BITMASK) + #define MPIDR_LEVEL_BITS 8 #define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1) diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h index aaa61b6..e789832 100644 --- a/arch/arm/include/asm/smp_plat.h +++ b/arch/arm/include/asm/smp_plat.h @@ -49,7 +49,7 @@ static inline int cache_ops_need_broadcast(void) /* * Logical CPU mapping. */ -extern int __cpu_logical_map[]; +extern u32 __cpu_logical_map[]; #define cpu_logical_map(cpu) __cpu_logical_map[cpu] /* * Retrieve logical cpu index corresponding to a given MPIDR[23:0] diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index 904cad5..0905502 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -82,7 +82,7 @@ void __init arm_dt_init_cpu_maps(void) u32 i, j, cpuidx = 1; u32 mpidr = is_smp() ? read_cpuid_mpidr() & MPIDR_HWID_BITMASK : 0; - u32 tmp_map[NR_CPUS] = { [0 ... NR_CPUS-1] = UINT_MAX }; + u32 tmp_map[NR_CPUS] = { [0 ... NR_CPUS-1] = MPIDR_INVALID }; bool bootcpu_valid = false; cpus = of_find_node_by_path("/cpus"); diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 1522c7a..b4b1d39 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -444,7 +444,7 @@ void notrace cpu_init(void) : "r14"); } -int __cpu_logical_map[NR_CPUS]; +u32 __cpu_logical_map[NR_CPUS] = { [0 ... NR_CPUS-1] = MPIDR_INVALID }; void __init smp_setup_processor_id(void) { -- cgit v0.10.2 From 63384fd0b1509acf522a8a8fcede09087eedb7df Mon Sep 17 00:00:00 2001 From: Simon Baatz Date: Sat, 22 Jun 2013 22:01:25 +0100 Subject: ARM: 7772/1: Fix missing flush_kernel_dcache_page() for noMMU Commit 1bc3974 (ARM: 7755/1: handle user space mapped pages in flush_kernel_dcache_page) moved the implementation of flush_kernel_dcache_page() into mm/flush.c but did not implement it on noMMU ARM. Signed-off-by: Simon Baatz Acked-by: Kevin Hilman Cc: # 3.2+: 1bc3974: ARM: 7755/1 Signed-off-by: Russell King diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index d51225f..eb5293a 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -57,6 +57,12 @@ void flush_dcache_page(struct page *page) } EXPORT_SYMBOL(flush_dcache_page); +void flush_kernel_dcache_page(struct page *page) +{ + __cpuc_flush_dcache_area(page_address(page), PAGE_SIZE); +} +EXPORT_SYMBOL(flush_kernel_dcache_page); + void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long uaddr, void *dst, const void *src, unsigned long len) -- cgit v0.10.2 From 3e0a07f8c401bb43e0f964c5f1285b2cb2028645 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Sun, 23 Jun 2013 10:17:11 +0100 Subject: ARM: 7773/1: PJ4B: Add support for errata 4742 This commit fixes the regression on Armada 370 (the kernal hang during boot) introduced by the commit: "ARM: 7691/1: mm: kill unused TLB_CAN_READ_FROM_L1_CACHE and use ALT_SMP instead". When coming out of either a Wait for Interrupt (WFI) or a Wait for Event (WFE) IDLE states, a specific timing sensitivity exists between the retiring WFI/WFE instructions and the newly issued subsequent instructions. This sensitivity can result in a CPU hang scenario. The workaround is to insert either a Data Synchronization Barrier (DSB) or Data Memory Barrier (DMB) command immediately after the WFI/WFE instruction. This commit was based on the work of Lior Amsalem, but heavily modified to apply the errata fix dynamically according to the processor type thanks to the suggestions of Russell King and Nicolas Pitre. Signed-off-by: Gregory CLEMENT Reviewed-by: Will Deacon Acked-by: Nicolas Pitre Tested-by: Willy Tarreau Cc: Signed-off-by: Russell King diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2651b1d..136f263 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1087,6 +1087,20 @@ if !MMU source "arch/arm/Kconfig-nommu" endif +config PJ4B_ERRATA_4742 + bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation" + depends on CPU_PJ4B && MACH_ARMADA_370 + default y + help + When coming out of either a Wait for Interrupt (WFI) or a Wait for + Event (WFE) IDLE states, a specific timing sensitivity exists between + the retiring WFI/WFE instructions and the newly issued subsequent + instructions. This sensitivity can result in a CPU hang scenario. + Workaround: + The software must insert either a Data Synchronization Barrier (DSB) + or Data Memory Barrier (DMB) command immediately after the WFI/WFE + instruction + config ARM_ERRATA_326103 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory" depends on CPU_V6 diff --git a/arch/arm/include/asm/glue-proc.h b/arch/arm/include/asm/glue-proc.h index ac1dd54..8017e94 100644 --- a/arch/arm/include/asm/glue-proc.h +++ b/arch/arm/include/asm/glue-proc.h @@ -230,6 +230,15 @@ # endif #endif +#ifdef CONFIG_CPU_PJ4B +# ifdef CPU_NAME +# undef MULTI_CPU +# define MULTI_CPU +# else +# define CPU_NAME cpu_pj4b +# endif +#endif + #ifndef MULTI_CPU #define cpu_proc_init __glue(CPU_NAME,_proc_init) #define cpu_proc_fin __glue(CPU_NAME,_proc_fin) diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index f9a0aa7..e3c48a3 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -333,3 +333,8 @@ ENTRY(\name\()_tlb_fns) .endif .size \name\()_tlb_fns, . - \name\()_tlb_fns .endm + +.macro globl_equ x, y + .globl \x + .equ \x, \y +.endm diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 4c8c9c1..e35fec3 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -140,6 +140,29 @@ ENTRY(cpu_v7_do_resume) ENDPROC(cpu_v7_do_resume) #endif +#ifdef CONFIG_CPU_PJ4B + globl_equ cpu_pj4b_switch_mm, cpu_v7_switch_mm + globl_equ cpu_pj4b_set_pte_ext, cpu_v7_set_pte_ext + globl_equ cpu_pj4b_proc_init, cpu_v7_proc_init + globl_equ cpu_pj4b_proc_fin, cpu_v7_proc_fin + globl_equ cpu_pj4b_reset, cpu_v7_reset +#ifdef CONFIG_PJ4B_ERRATA_4742 +ENTRY(cpu_pj4b_do_idle) + dsb @ WFI may enter a low-power mode + wfi + dsb @barrier + mov pc, lr +ENDPROC(cpu_pj4b_do_idle) +#else + globl_equ cpu_pj4b_do_idle, cpu_v7_do_idle +#endif + globl_equ cpu_pj4b_dcache_clean_area, cpu_v7_dcache_clean_area + globl_equ cpu_pj4b_do_suspend, cpu_v7_do_suspend + globl_equ cpu_pj4b_do_resume, cpu_v7_do_resume + globl_equ cpu_pj4b_suspend_size, cpu_v7_suspend_size + +#endif + __CPUINIT /* @@ -350,6 +373,9 @@ __v7_setup_stack: @ define struct processor (see and proc-macros.S) define_processor_functions v7, dabort=v7_early_abort, pabort=v7_pabort, suspend=1 +#ifdef CONFIG_CPU_PJ4B + define_processor_functions pj4b, dabort=v7_early_abort, pabort=v7_pabort, suspend=1 +#endif .section ".rodata" @@ -362,7 +388,7 @@ __v7_setup_stack: /* * Standard v7 proc info content */ -.macro __v7_proc initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0 +.macro __v7_proc initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0, proc_fns = v7_processor_functions ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \ PMD_SECT_AF | PMD_FLAGS_SMP | \mm_mmuflags) ALT_UP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \ @@ -375,7 +401,7 @@ __v7_setup_stack: .long HWCAP_SWP | HWCAP_HALF | HWCAP_THUMB | HWCAP_FAST_MULT | \ HWCAP_EDSP | HWCAP_TLS | \hwcaps .long cpu_v7_name - .long v7_processor_functions + .long \proc_fns .long v7wbi_tlb_fns .long v6_user_fns .long v7_cache_fns @@ -407,12 +433,14 @@ __v7_ca9mp_proc_info: /* * Marvell PJ4B processor. */ +#ifdef CONFIG_CPU_PJ4B .type __v7_pj4b_proc_info, #object __v7_pj4b_proc_info: .long 0x560f5800 .long 0xff0fff00 - __v7_proc __v7_pj4b_setup + __v7_proc __v7_pj4b_setup, proc_fns = pj4b_processor_functions .size __v7_pj4b_proc_info, . - __v7_pj4b_proc_info +#endif /* * ARM Ltd. Cortex A7 processor. -- cgit v0.10.2 From c8fc51cfa758be945c6113a4b446e0159070f768 Mon Sep 17 00:00:00 2001 From: Gao feng Date: Mon, 24 Jun 2013 17:04:02 +0800 Subject: netfilter: ipt_ULOG: fix incorrect setting of ulog timer The parameter of setup_timer should be &ulog->nlgroup[i]. the incorrect parameter will cause kernel panic in ulog_timer. Bug introducted in commit 355430671ad93546b34b4e91bdf720f3a704efa4 "netfilter: ipt_ULOG: add net namespace support for ipt_ULOG" ebt_ULOG doesn't have this problem. [ I have mangled this patch to fix nlgroup != 0 case, we were also crashing there --pablo ] Tested-by: George Spelvin Reported-by: Borislav Petkov Signed-off-by: Gao feng Signed-off-by: Pablo Neira Ayuso diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c index ff4b781..32b0e97 100644 --- a/net/ipv4/netfilter/ipt_ULOG.c +++ b/net/ipv4/netfilter/ipt_ULOG.c @@ -125,15 +125,16 @@ static void ulog_send(struct ulog_net *ulog, unsigned int nlgroupnum) /* timer function to flush queue in flushtimeout time */ static void ulog_timer(unsigned long data) { + unsigned int groupnum = *((unsigned int *)data); struct ulog_net *ulog = container_of((void *)data, struct ulog_net, - nlgroup[*(unsigned int *)data]); + nlgroup[groupnum]); pr_debug("timer function called, calling ulog_send\n"); /* lock to protect against somebody modifying our structure * from ipt_ulog_target at the same time */ spin_lock_bh(&ulog->lock); - ulog_send(ulog, data); + ulog_send(ulog, groupnum); spin_unlock_bh(&ulog->lock); } @@ -407,8 +408,11 @@ static int __net_init ulog_tg_net_init(struct net *net) spin_lock_init(&ulog->lock); /* initialize ulog_buffers */ - for (i = 0; i < ULOG_MAXNLGROUPS; i++) - setup_timer(&ulog->ulog_buffers[i].timer, ulog_timer, i); + for (i = 0; i < ULOG_MAXNLGROUPS; i++) { + ulog->nlgroup[i] = i; + setup_timer(&ulog->ulog_buffers[i].timer, ulog_timer, + (unsigned long)&ulog->nlgroup[i]); + } ulog->nflognl = netlink_kernel_create(net, NETLINK_NFLOG, &cfg); if (!ulog->nflognl) -- cgit v0.10.2 From 23bc2021c54b048302f6f4844c030660ce0fcfe9 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 22 Jun 2013 12:39:26 +0200 Subject: ath9k: fix an RCU issue in calling ieee80211_get_tx_rates ath_txq_schedule is called outside of the drv_tx call, so it needs RCU protection. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 1c9b1ba..83ab6be 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1570,6 +1570,8 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) return; + rcu_read_lock(); + ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac, list); last_ac = list_entry(txq->axq_acq.prev, struct ath_atx_ac, list); @@ -1608,8 +1610,10 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) if (ac == last_ac || txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) - return; + break; } + + rcu_read_unlock(); } /***********/ -- cgit v0.10.2 From 075163bbb0f51174359947e1bce84f5edb23f21e Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Thu, 20 Jun 2013 13:57:07 +0530 Subject: ath9k_htc: Handle IDLE state transition properly Make sure that a chip reset is done when IDLE is turned off - this fixes authentication timeouts. Cc: stable@vger.kernel.org Reported-by: Ignacy Gawedzki Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c index 0743a47..62f1b76 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c @@ -1174,7 +1174,7 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed) mutex_lock(&priv->htc_pm_lock); priv->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE); - if (priv->ps_idle) + if (!priv->ps_idle) chip_reset = true; mutex_unlock(&priv->htc_pm_lock); -- cgit v0.10.2 From b37e161388ac3980d5dfb73050e85874b84253eb Mon Sep 17 00:00:00 2001 From: Rojhalat Ibrahim Date: Mon, 17 Jun 2013 16:02:41 +0200 Subject: powerpc/pci: Fix boot panic on mpc83xx (regression) The following commit caused a fatal oops when booting on mpc83xx with a non-express PCI bus (regardless of whether a PCI device is present): commit 50d8f87d2b39313dae9d0a2d9b23d377328f2f7b Author: Rojhalat Ibrahim Date: Mon Apr 8 10:15:28 2013 +0200 powerpc/fsl-pci Make PCIe hotplug work with Freescale PCIe controllers Up to now the PCIe link status on Freescale PCIe controllers was only checked once at boot time. So hotplug did not work. With this patch the link status is checked on every config read. PCIe devices not present at boot time are found after doing 'echo 1 >/sys/bus/pci/rescan'. Signed-off-by: Rojhalat Ibrahim Signed-off-by: Kumar Gala This patch fixes the issue by calling setup_indirect_pci for all device types. fsl_indirect_read_config is now only used for booke/86xx PCIe controllers. Reported-by: Michael Guntsche Cc: Scott Wood Signed-off-by: Rojhalat Ibrahim Signed-off-by: Scott Wood diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 028ac1f..46ac1dd 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -97,22 +97,14 @@ static int fsl_indirect_read_config(struct pci_bus *bus, unsigned int devfn, return indirect_read_config(bus, devfn, offset, len, val); } -static struct pci_ops fsl_indirect_pci_ops = +#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) + +static struct pci_ops fsl_indirect_pcie_ops = { .read = fsl_indirect_read_config, .write = indirect_write_config, }; -static void __init fsl_setup_indirect_pci(struct pci_controller* hose, - resource_size_t cfg_addr, - resource_size_t cfg_data, u32 flags) -{ - setup_indirect_pci(hose, cfg_addr, cfg_data, flags); - hose->ops = &fsl_indirect_pci_ops; -} - -#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) - #define MAX_PHYS_ADDR_BITS 40 static u64 pci64_dma_offset = 1ull << MAX_PHYS_ADDR_BITS; @@ -504,13 +496,15 @@ int __init fsl_add_bridge(struct platform_device *pdev, int is_primary) if (!hose->private_data) goto no_bridge; - fsl_setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4, - PPC_INDIRECT_TYPE_BIG_ENDIAN); + setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4, + PPC_INDIRECT_TYPE_BIG_ENDIAN); if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0) hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK; if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { + /* use fsl_indirect_read_config for PCIe */ + hose->ops = &fsl_indirect_pcie_ops; /* For PCIE read HEADER_TYPE to identify controler mode */ early_read_config_byte(hose, 0, 0, PCI_HEADER_TYPE, &hdr_type); if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) @@ -814,8 +808,8 @@ int __init mpc83xx_add_bridge(struct device_node *dev) if (ret) goto err0; } else { - fsl_setup_indirect_pci(hose, rsrc_cfg.start, - rsrc_cfg.start + 4, 0); + setup_indirect_pci(hose, rsrc_cfg.start, + rsrc_cfg.start + 4, 0); } printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " -- cgit v0.10.2 From 44521527be36172864e6e7a6fba4b66e9aa48e40 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Thu, 20 Jun 2013 09:38:34 +0800 Subject: libata-acpi: add back ACPI based hotplug functionality Commit 30dcf76acc69 "libata: migrate ACPI code over to new bindings" mistakenly dropped the code to register hotplug notificaion handler for ATA port/devices, causing regression for people using ATA bay, as kernel bug #59871 shows. Fix this by adding back the hotplug notification handler registration code. Since this code has to be run once and notification needs to be installed on every ATA port/devices handle no matter if there is actual device attached, we can't do this in binding time for ATA device ACPI handle, as the binding only occurs when a SCSI device is created, i.e. there is device attached. So introduce the ata_acpi_hotplug_init() function to loop scan all ATA ACPI handles and if it is available, install the notificaion handler for it during ATA init time. With the ATA ACPI handle binding to SCSI device tree, it is possible now that when the SCSI hotplug work removes the SCSI device, the ACPI unbind function will find that the corresponding ACPI device has already been deleted by dock driver, causing a scaring message like: [ 128.263966] scsi 4:0:0:0: Oops, 'acpi_handle' corrupt Fix this by waiting for SCSI hotplug task finish in our notificaion handler, so that the removal of ACPI device done in ACPI unbind function triggered by the removal of SCSI device is run earlier when ACPI device is still available. [rjw: Rebased] References: https://bugzilla.kernel.org/show_bug.cgi?id=59871 Reported-bisected-and-tested-by: Dirk Griesbach Signed-off-by: Aaron Lu Acked-by: Tejun Heo Cc: 3.6+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 87f2f39..cf4e702 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -156,8 +156,10 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev, spin_unlock_irqrestore(ap->lock, flags); - if (wait) + if (wait) { ata_port_wait_eh(ap); + flush_work(&ap->hotplug_task.work); + } } static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data) @@ -214,6 +216,39 @@ static const struct acpi_dock_ops ata_acpi_ap_dock_ops = { .uevent = ata_acpi_ap_uevent, }; +void ata_acpi_hotplug_init(struct ata_host *host) +{ + int i; + + for (i = 0; i < host->n_ports; i++) { + struct ata_port *ap = host->ports[i]; + acpi_handle handle; + struct ata_device *dev; + + if (!ap) + continue; + + handle = ata_ap_acpi_handle(ap); + if (handle) { + /* we might be on a docking station */ + register_hotplug_dock_device(handle, + &ata_acpi_ap_dock_ops, ap, + NULL, NULL); + } + + ata_for_each_dev(dev, &ap->link, ALL) { + handle = ata_dev_acpi_handle(dev); + if (!handle) + continue; + + /* we might be on a docking station */ + register_hotplug_dock_device(handle, + &ata_acpi_dev_dock_ops, + dev, NULL, NULL); + } + } +} + /** * ata_acpi_dissociate - dissociate ATA host from ACPI objects * @host: target ATA host diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index f218427..adf002a 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6148,6 +6148,8 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht) if (rc) goto err_tadd; + ata_acpi_hotplug_init(host); + /* set cable, sata_spd_limit and report */ for (i = 0; i < host->n_ports; i++) { struct ata_port *ap = host->ports[i]; diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index c949dd3..577d902 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -122,6 +122,7 @@ extern int ata_acpi_register(void); extern void ata_acpi_unregister(void); extern void ata_acpi_bind(struct ata_device *dev); extern void ata_acpi_unbind(struct ata_device *dev); +extern void ata_acpi_hotplug_init(struct ata_host *host); #else static inline void ata_acpi_dissociate(struct ata_host *host) { } static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; } @@ -134,6 +135,7 @@ static inline int ata_acpi_register(void) { return 0; } static inline void ata_acpi_unregister(void) { } static inline void ata_acpi_bind(struct ata_device *dev) { } static inline void ata_acpi_unbind(struct ata_device *dev) { } +static inline void ata_acpi_hotplug_init(struct ata_host *host) {} #endif /* libata-scsi.c */ -- cgit v0.10.2 From 426729dcc713b3d1ae802e314030e5556a62da53 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Mon, 24 Jun 2013 11:47:48 -0400 Subject: drm/i915: make compact dma scatter lists creation work with SWIOTLB backend. Git commit 90797e6d1ec0dfde6ba62a48b9ee3803887d6ed4 ("drm/i915: create compact dma scatter lists for gem objects") makes certain assumptions about the under laying DMA API that are not always correct. On a ThinkPad X230 with an Intel HD 4000 with Xen during the bootup I see: [drm:intel_pipe_set_base] *ERROR* pin & fence failed [drm:intel_crtc_set_config] *ERROR* failed to set mode on [CRTC:3], err = -28 Bit of debugging traced it down to dma_map_sg failing (in i915_gem_gtt_prepare_object) as some of the SG entries were huge (3MB). That unfortunately are sizes that the SWIOTLB is incapable of handling - the maximum it can handle is a an entry of 512KB of virtual contiguous memory for its bounce buffer. (See IO_TLB_SEGSIZE). Previous to the above mention git commit the SG entries were of 4KB, and the code introduced by above git commit squashed the CPU contiguous PFNs in one big virtual address provided to DMA API. This patch is a simple semi-revert - were we emulate the old behavior if we detect that SWIOTLB is online. If it is not online then we continue on with the new compact scatter gather mechanism. An alternative solution would be for the the '.get_pages' and the i915_gem_gtt_prepare_object to retry with smaller max gap of the amount of PFNs that can be combined together - but with this issue discovered during rc7 that might be too risky. Reported-and-Tested-by: Konrad Rzeszutek Wilk CC: Chris Wilson CC: Imre Deak CC: Daniel Vetter CC: David Airlie CC: Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index a069741..9e35daf 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1801,7 +1801,14 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD; gfp &= ~(__GFP_IO | __GFP_WAIT); } - +#ifdef CONFIG_SWIOTLB + if (swiotlb_nr_tbl()) { + st->nents++; + sg_set_page(sg, page, PAGE_SIZE, 0); + sg = sg_next(sg); + continue; + } +#endif if (!i || page_to_pfn(page) != last_pfn + 1) { if (i) sg = sg_next(sg); @@ -1812,8 +1819,10 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) } last_pfn = page_to_pfn(page); } - - sg_mark_end(sg); +#ifdef CONFIG_SWIOTLB + if (!swiotlb_nr_tbl()) +#endif + sg_mark_end(sg); obj->pages = st; if (i915_gem_object_needs_bit17_swizzle(obj)) -- cgit v0.10.2 From 939e17799619e31331d2433041196529515a86a6 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 25 Jun 2013 19:15:17 +0800 Subject: crypto: algboss - Hold ref count on larval On Thu, Jun 20, 2013 at 10:00:21AM +0200, Daniel Borkmann wrote: > After having fixed a NULL pointer dereference in SCTP 1abd165e ("net: > sctp: fix NULL pointer dereference in socket destruction"), I ran into > the following NULL pointer dereference in the crypto subsystem with > the same reproducer, easily hit each time: > > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [] __wake_up_common+0x31/0x90 > PGD 0 > Oops: 0000 [#1] SMP > Modules linked in: padlock_sha(F-) sha256_generic(F) sctp(F) libcrc32c(F) [..] > CPU: 6 PID: 3326 Comm: cryptomgr_probe Tainted: GF 3.10.0-rc5+ #1 > Hardware name: Dell Inc. PowerEdge T410/0H19HD, BIOS 1.6.3 02/01/2011 > task: ffff88007b6cf4e0 ti: ffff88007b7cc000 task.ti: ffff88007b7cc000 > RIP: 0010:[] [] __wake_up_common+0x31/0x90 > RSP: 0018:ffff88007b7cde08 EFLAGS: 00010082 > RAX: ffffffffffffffe8 RBX: ffff88003756c130 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88003756c130 > RBP: ffff88007b7cde48 R08: 0000000000000000 R09: ffff88012b173200 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 > R13: ffff88003756c138 R14: 0000000000000000 R15: 0000000000000000 > FS: 0000000000000000(0000) GS:ffff88012fc60000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000000 CR3: 0000000001a0b000 CR4: 00000000000007e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Stack: > ffff88007b7cde28 0000000300000000 ffff88007b7cde28 ffff88003756c130 > 0000000000000282 ffff88003756c128 ffffffff81227670 0000000000000000 > ffff88007b7cde78 ffffffff810722b7 ffff88007cdcf000 ffffffff81a90540 > Call Trace: > [] ? crypto_alloc_pcomp+0x20/0x20 > [] complete_all+0x47/0x60 > [] cryptomgr_probe+0x98/0xc0 > [] ? crypto_alloc_pcomp+0x20/0x20 > [] kthread+0xce/0xe0 > [] ? kthread_freezable_should_stop+0x70/0x70 > [] ret_from_fork+0x7c/0xb0 > [] ? kthread_freezable_should_stop+0x70/0x70 > Code: 41 56 41 55 41 54 53 48 83 ec 18 66 66 66 66 90 89 75 cc 89 55 c8 > 4c 8d 6f 08 48 8b 57 08 41 89 cf 4d 89 c6 48 8d 42 e > RIP [] __wake_up_common+0x31/0x90 > RSP > CR2: 0000000000000000 > ---[ end trace b495b19270a4d37e ]--- > > My assumption is that the following is happening: the minimal SCTP > tool runs under ``echo 1 > /proc/sys/net/sctp/auth_enable'', hence > it's making use of crypto_alloc_hash() via sctp_auth_init_hmacs(). > It forks itself, heavily allocates, binds, listens and waits in > accept on sctp sockets, and then randomly kills some of them (no > need for an actual client in this case to hit this). Then, again, > allocating, binding, etc, and then killing child processes. > > The problem that might be happening here is that cryptomgr requests > the module to probe/load through cryptomgr_schedule_probe(), but > before the thread handler cryptomgr_probe() returns, we return from > the wait_for_completion_interruptible() function and probably already > have cleared up larval, thus we run into a NULL pointer dereference > when in cryptomgr_probe() complete_all() is being called. > > If we wait with wait_for_completion() instead, this panic will not > occur anymore. This is valid, because in case a signal is pending, > cryptomgr_probe() returns from probing anyway with properly calling > complete_all(). The use of wait_for_completion_interruptible is intentional so that we don't lock up the thread if a bug causes us to never wake up. This bug is caused by the helper thread using the larval without holding a reference count on it. If the helper thread completes after the original thread requesting for help has gone away and destroyed the larval, then we get the crash above. So the fix is to hold a reference count on the larval. Cc: # 3.6+ Reported-by: Daniel Borkmann Tested-by: Daniel Borkmann Signed-off-by: Herbert Xu diff --git a/crypto/algboss.c b/crypto/algboss.c index 769219b..76fc0b2 100644 --- a/crypto/algboss.c +++ b/crypto/algboss.c @@ -45,10 +45,9 @@ struct cryptomgr_param { } nu32; } attrs[CRYPTO_MAX_ATTRS]; - char larval[CRYPTO_MAX_ALG_NAME]; char template[CRYPTO_MAX_ALG_NAME]; - struct completion *completion; + struct crypto_larval *larval; u32 otype; u32 omask; @@ -87,7 +86,8 @@ static int cryptomgr_probe(void *data) crypto_tmpl_put(tmpl); out: - complete_all(param->completion); + complete_all(¶m->larval->completion); + crypto_alg_put(¶m->larval->alg); kfree(param); module_put_and_exit(0); } @@ -187,18 +187,19 @@ static int cryptomgr_schedule_probe(struct crypto_larval *larval) param->otype = larval->alg.cra_flags; param->omask = larval->mask; - memcpy(param->larval, larval->alg.cra_name, CRYPTO_MAX_ALG_NAME); - - param->completion = &larval->completion; + crypto_alg_get(&larval->alg); + param->larval = larval; thread = kthread_run(cryptomgr_probe, param, "cryptomgr_probe"); if (IS_ERR(thread)) - goto err_free_param; + goto err_put_larval; wait_for_completion_interruptible(&larval->completion); return NOTIFY_STOP; +err_put_larval: + crypto_alg_put(&larval->alg); err_free_param: kfree(param); err_put_module: diff --git a/crypto/api.c b/crypto/api.c index 033a714..3b61803 100644 --- a/crypto/api.c +++ b/crypto/api.c @@ -34,12 +34,6 @@ EXPORT_SYMBOL_GPL(crypto_alg_sem); BLOCKING_NOTIFIER_HEAD(crypto_chain); EXPORT_SYMBOL_GPL(crypto_chain); -static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg) -{ - atomic_inc(&alg->cra_refcnt); - return alg; -} - struct crypto_alg *crypto_mod_get(struct crypto_alg *alg) { return try_module_get(alg->cra_module) ? crypto_alg_get(alg) : NULL; diff --git a/crypto/internal.h b/crypto/internal.h index 9ebedae..bd39bfc 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -103,6 +103,12 @@ int crypto_register_notifier(struct notifier_block *nb); int crypto_unregister_notifier(struct notifier_block *nb); int crypto_probing_notify(unsigned long val, void *v); +static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg) +{ + atomic_inc(&alg->cra_refcnt); + return alg; +} + static inline void crypto_alg_put(struct crypto_alg *alg) { if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy) -- cgit v0.10.2 From 2884d4230867c8a46cf701214051e923301e7429 Mon Sep 17 00:00:00 2001 From: Robert Love Date: Wed, 19 Jun 2013 01:56:54 +0000 Subject: fcoe: Use correct API to set vlan tag for FCoE Ethertype skbs fcoe_xmit was coded such that it would skip the vlan net device/layer and instead set some vlan flags and transmit on the real net device. The real net device has code that would add the vlan tag for fcoe skbs. This avoids some extra processing for data frames and provides a small performance improvement. Since fcoe_xmit was not using the vlan net device, __vlan_put_tag within the real net device's xmit routine was ultimately being called to set the vlan tag. With the below change the behavior of __vlan_put_tag changed slightly, it now sets the skb->protocol = vlan_proto. vlan_proto was not a field being set by fcoe_xmit, so the skb->protocol is now not being set to ETH_P_8021Q, as it should be. This patch converts fcoe_xmit to use the vlan_put_tag routine which will tag the skb and fcoe will continue to transmit fcoe skbs on the real net device. For reference, the below change was the one that altered the __vlan_put_tag behavior. commit 86a9bad3ab6b6f858fd4443b48738cabbb6d094c Author: Patrick McHardy Date: Fri Apr 19 02:04:30 2013 +0000 net: vlan: add protocol argument to packet tagging functions Add a protocol argument to the VLAN packet tagging functions. In case of HW tagging, we need that protocol available in the ndo_start_xmit functions, so it is stored in a new field in the skb. The new field fits into a hole (on 64 bit) and doesn't increase the sks's size. Signed-off-by: Robert Love Acked-by: Neil Horman Acked-by: John Fastabend diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 292b24f..32ae6c6 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -1656,9 +1656,12 @@ static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN && fcoe->realdev->features & NETIF_F_HW_VLAN_CTAG_TX) { - skb->vlan_tci = VLAN_TAG_PRESENT | - vlan_dev_vlan_id(fcoe->netdev); + /* must set skb->dev before calling vlan_put_tag */ skb->dev = fcoe->realdev; + skb = __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), + vlan_dev_vlan_id(fcoe->netdev)); + if (!skb) + return -ENOMEM; } else skb->dev = fcoe->netdev; -- cgit v0.10.2 From 1617e40c1eeeeb857ff4b66acee20ed2acc1b5e7 Mon Sep 17 00:00:00 2001 From: Josh Durgin Date: Wed, 12 Jun 2013 14:43:10 -0700 Subject: rbd: fetch object order before using it rbd_dev_v2_header_onetime() fetches striping information, and checks whether the image can be read by compariing the stripe unit to the object size. It determines the object size by shifting the object order, which is 0 at this point since it has not been read yet. Move the call to get the image size and object order before rbd_dev_v2_header_onetime() so it is set before use. Signed-off-by: Josh Durgin Reviewed-by: Sage Weil diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index cc7c60e..7c66173 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -4245,6 +4245,10 @@ static int rbd_dev_v2_header_info(struct rbd_device *rbd_dev) down_write(&rbd_dev->header_rwsem); + ret = rbd_dev_v2_image_size(rbd_dev); + if (ret) + goto out; + if (first_time) { ret = rbd_dev_v2_header_onetime(rbd_dev); if (ret) @@ -4278,10 +4282,6 @@ static int rbd_dev_v2_header_info(struct rbd_device *rbd_dev) "is EXPERIMENTAL!"); } - ret = rbd_dev_v2_image_size(rbd_dev); - if (ret) - goto out; - if (rbd_dev->spec->snap_id == CEPH_NOSNAP) if (rbd_dev->mapping.size != rbd_dev->header.image_size) rbd_dev->mapping.size = rbd_dev->header.image_size; -- cgit v0.10.2 From c28375583b6471c1cb833a628ab6afb5b69079d0 Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Tue, 25 Jun 2013 22:42:37 +0200 Subject: cpufreq: fix NULL pointer deference at od_set_powersave_bias() When initializing the default powersave_bias value, we need to first make sure that this policy is running the ondemand governor. Reported-and-tested-by: Tim Gardner Signed-off-by: Jacob Shin Signed-off-by: Rafael J. Wysocki diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 4b9bb5d..93eb5cb 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -47,6 +47,8 @@ static struct od_ops od_ops; static struct cpufreq_governor cpufreq_gov_ondemand; #endif +static unsigned int default_powersave_bias; + static void ondemand_powersave_bias_init_cpu(int cpu) { struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu); @@ -543,7 +545,7 @@ static int od_init(struct dbs_data *dbs_data) tuners->sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR; tuners->ignore_nice = 0; - tuners->powersave_bias = 0; + tuners->powersave_bias = default_powersave_bias; tuners->io_is_busy = should_io_be_busy(); dbs_data->tuners = tuners; @@ -585,6 +587,7 @@ static void od_set_powersave_bias(unsigned int powersave_bias) unsigned int cpu; cpumask_t done; + default_powersave_bias = powersave_bias; cpumask_clear(&done); get_online_cpus(); @@ -593,11 +596,17 @@ static void od_set_powersave_bias(unsigned int powersave_bias) continue; policy = per_cpu(od_cpu_dbs_info, cpu).cdbs.cur_policy; - dbs_data = policy->governor_data; - od_tuners = dbs_data->tuners; - od_tuners->powersave_bias = powersave_bias; + if (!policy) + continue; cpumask_or(&done, &done, policy->cpus); + + if (policy->governor != &cpufreq_gov_ondemand) + continue; + + dbs_data = policy->governor_data; + od_tuners = dbs_data->tuners; + od_tuners->powersave_bias = default_powersave_bias; } put_online_cpus(); } -- cgit v0.10.2 From ab4eb3537e3f20b2a88467e1f708a136df6e0ecb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?YOSHIFUJI=20Hideaki=20/=20=E5=90=89=E8=97=A4=E8=8B=B1?= =?UTF-8?q?=E6=98=8E?= Date: Sat, 22 Jun 2013 11:13:13 +0900 Subject: ipv6: Process unicast packet with Router Alert by checking flag in skb. Router Alert option is marked in skb. Previously, IP6CB(skb)->ra was set to positive value for such packets. Since commit dd3332bf ("ipv6: Store Router Alert option in IP6CB directly."), IP6SKB_ROUTERALERT is set in IP6CB(skb)->flags, and the value of Router Alert option (in network byte order) is set to IP6CB(skb)->ra for such packets. Multicast forwarding path uses that flag and value, but unicast forwarding path does not use the flag and misuses IP6CB(skb)->ra value. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index dae1949..95703ba 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -381,9 +381,8 @@ int ip6_forward(struct sk_buff *skb) * cannot be fragmented, because there is no warranty * that different fragments will go along one path. --ANK */ - if (opt->ra) { - u8 *ptr = skb_network_header(skb) + opt->ra; - if (ip6_call_ra_chain(skb, (ptr[2]<<8) + ptr[3])) + if (unlikely(opt->flags & IP6SKB_ROUTERALERT)) { + if (ip6_call_ra_chain(skb, ntohs(opt->ra))) return 0; } -- cgit v0.10.2 From bd8a7036c06cf15779b31a5397d4afcb12be81ea Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 24 Jun 2013 06:26:00 -0700 Subject: gre: fix a possible skb leak commit 68c331631143 ("v4 GRE: Add TCP segmentation offload for GRE") added a possible skb leak, because it frees only the head of segment list, in case a skb_linearize() call fails. This patch adds a kfree_skb_list() helper to fix the bug. Signed-off-by: Eric Dumazet Cc: Pravin B Shelar Cc: Daniel Borkmann Signed-off-by: David S. Miller diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 9c676eae..dec1748 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -627,6 +627,7 @@ static inline struct rtable *skb_rtable(const struct sk_buff *skb) } extern void kfree_skb(struct sk_buff *skb); +extern void kfree_skb_list(struct sk_buff *segs); extern void skb_tx_error(struct sk_buff *skb); extern void consume_skb(struct sk_buff *skb); extern void __kfree_skb(struct sk_buff *skb); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index cfd777b..1c1738c 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -483,15 +483,8 @@ EXPORT_SYMBOL(skb_add_rx_frag); static void skb_drop_list(struct sk_buff **listp) { - struct sk_buff *list = *listp; - + kfree_skb_list(*listp); *listp = NULL; - - do { - struct sk_buff *this = list; - list = list->next; - kfree_skb(this); - } while (list); } static inline void skb_drop_fraglist(struct sk_buff *skb) @@ -651,6 +644,17 @@ void kfree_skb(struct sk_buff *skb) } EXPORT_SYMBOL(kfree_skb); +void kfree_skb_list(struct sk_buff *segs) +{ + while (segs) { + struct sk_buff *next = segs->next; + + kfree_skb(segs); + segs = next; + } +} +EXPORT_SYMBOL(kfree_skb_list); + /** * skb_tx_error - report an sk_buff xmit error * @skb: buffer that triggered an error diff --git a/net/ipv4/gre.c b/net/ipv4/gre.c index b2e805a..7856d16 100644 --- a/net/ipv4/gre.c +++ b/net/ipv4/gre.c @@ -178,7 +178,7 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb, err = __skb_linearize(skb); if (err) { - kfree_skb(segs); + kfree_skb_list(segs); segs = ERR_PTR(err); goto out; } -- cgit v0.10.2 From 7e24bfbe43b545b1689a5f134ed83645b9e34b86 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 23 Jun 2013 17:19:03 +0300 Subject: tun: fix recovery from gup errors get user pages might fail partially in tun zero copy mode. To recover we need to put all pages that we got, but code used a wrong index resulting in double-free errors. Reported-by: Brad Hubbard Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang Acked-by: Neil Horman Signed-off-by: David S. Miller diff --git a/drivers/net/tun.c b/drivers/net/tun.c index bfa9bb4..9c61f87 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1010,8 +1010,10 @@ static int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from, return -EMSGSIZE; num_pages = get_user_pages_fast(base, size, 0, &page[i]); if (num_pages != size) { - for (i = 0; i < num_pages; i++) - put_page(page[i]); + int j; + + for (j = 0; j < num_pages; j++) + put_page(page[i + j]); return -EFAULT; } truesize = size * PAGE_SIZE; -- cgit v0.10.2 From 4c7ab054ab4f5d63625508ed6f8a607184cae7c2 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 23 Jun 2013 17:26:58 +0300 Subject: macvtap: fix recovery from gup errors get user pages might fail partially in macvtap zero copy mode. To recover we need to put all pages that we got, but code used a wrong index resulting in double-free errors. Reported-by: Brad Hubbard Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang Signed-off-by: David S. Miller diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 59e9605..b6dd6a7 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -524,8 +524,10 @@ static int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from, return -EMSGSIZE; num_pages = get_user_pages_fast(base, size, 0, &page[i]); if (num_pages != size) { - for (i = 0; i < num_pages; i++) - put_page(page[i]); + int j; + + for (j = 0; j < num_pages; j++) + put_page(page[i + j]); return -EFAULT; } truesize = size * PAGE_SIZE; -- cgit v0.10.2 From dc8482926e2b1006ed6962ac8388cb92aed4efc7 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Mon, 24 Jun 2013 21:42:40 +0200 Subject: ipv6: check return value of ipv6_get_lladdr We should check the return value of ipv6_get_lladdr in inet6_set_iftoken. A possible situation, which could leave ll_addr unassigned is, when the user removed her link-local address but a global scoped address was already set. In this case the interface would still be IF_READY and not dead. In that case the RS source address is some value from the stack. v2: Daniel Borkmann noted a small indent inconstancy; no semantic changes. Cc: Daniel Borkmann Acked-by: Daniel Borkmann Reviewed-by: Flavio Leitner Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 77b6261..4ab4c38 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -4306,6 +4306,7 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token) struct inet6_ifaddr *ifp; struct net_device *dev = idev->dev; bool update_rs = false; + struct in6_addr ll_addr; if (token == NULL) return -EINVAL; @@ -4325,11 +4326,9 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token) write_unlock_bh(&idev->lock); - if (!idev->dead && (idev->if_flags & IF_READY)) { - struct in6_addr ll_addr; - - ipv6_get_lladdr(dev, &ll_addr, IFA_F_TENTATIVE | - IFA_F_OPTIMISTIC); + if (!idev->dead && (idev->if_flags & IF_READY) && + !ipv6_get_lladdr(dev, &ll_addr, IFA_F_TENTATIVE | + IFA_F_OPTIMISTIC)) { /* If we're not ready, then normal ifup will take care * of this. Otherwise, we need to request our rs here. -- cgit v0.10.2 From 6d446ec32f169c6a5d9bc90684a8082a6cbe90f6 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 25 Jun 2013 15:24:32 +0800 Subject: net/tg3: Avoid delay during MMIO access When the EEH error is the result of a fenced host bridge, MMIO accesses can be very slow (milliseconds) to timeout and return all 1's, thus causing the driver various timeout loops to take way too long and trigger soft-lockup warnings (in addition to taking minutes to recover). It might be worthwhile to check if for any of these cases, ffffffff is a valid possible value, and if not, bail early since that means the HW is either gone or isolated. In the meantime, checking that the PCI channel is offline would be workaround of the problem. Cc: # v3.0+ Signed-off-by: Gavin Shan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index c777b90..a13463e 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -744,6 +744,9 @@ static int tg3_ape_lock(struct tg3 *tp, int locknum) status = tg3_ape_read32(tp, gnt + off); if (status == bit) break; + if (pci_channel_offline(tp->pdev)) + break; + udelay(10); } @@ -1635,6 +1638,9 @@ static void tg3_wait_for_event_ack(struct tg3 *tp) for (i = 0; i < delay_cnt; i++) { if (!(tr32(GRC_RX_CPU_EVENT) & GRC_RX_CPU_DRIVER_EVENT)) break; + if (pci_channel_offline(tp->pdev)) + break; + udelay(8); } } @@ -1813,6 +1819,9 @@ static int tg3_poll_fw(struct tg3 *tp) for (i = 0; i < 200; i++) { if (tr32(VCPU_STATUS) & VCPU_STATUS_INIT_DONE) return 0; + if (pci_channel_offline(tp->pdev)) + return -ENODEV; + udelay(100); } return -ENODEV; @@ -1823,6 +1832,15 @@ static int tg3_poll_fw(struct tg3 *tp) tg3_read_mem(tp, NIC_SRAM_FIRMWARE_MBOX, &val); if (val == ~NIC_SRAM_FIRMWARE_MBOX_MAGIC1) break; + if (pci_channel_offline(tp->pdev)) { + if (!tg3_flag(tp, NO_FWARE_REPORTED)) { + tg3_flag_set(tp, NO_FWARE_REPORTED); + netdev_info(tp->dev, "No firmware running\n"); + } + + break; + } + udelay(10); } @@ -3520,6 +3538,8 @@ static int tg3_pause_cpu(struct tg3 *tp, u32 cpu_base) tw32(cpu_base + CPU_MODE, CPU_MODE_HALT); if (tr32(cpu_base + CPU_MODE) & CPU_MODE_HALT) break; + if (pci_channel_offline(tp->pdev)) + return -EBUSY; } return (i == iters) ? -EBUSY : 0; @@ -8589,6 +8609,14 @@ static int tg3_stop_block(struct tg3 *tp, unsigned long ofs, u32 enable_bit, boo tw32_f(ofs, val); for (i = 0; i < MAX_WAIT_CNT; i++) { + if (pci_channel_offline(tp->pdev)) { + dev_err(&tp->pdev->dev, + "tg3_stop_block device offline, " + "ofs=%lx enable_bit=%x\n", + ofs, enable_bit); + return -ENODEV; + } + udelay(100); val = tr32(ofs); if ((val & enable_bit) == 0) @@ -8612,6 +8640,13 @@ static int tg3_abort_hw(struct tg3 *tp, bool silent) tg3_disable_ints(tp); + if (pci_channel_offline(tp->pdev)) { + tp->rx_mode &= ~(RX_MODE_ENABLE | TX_MODE_ENABLE); + tp->mac_mode &= ~MAC_MODE_TDE_ENABLE; + err = -ENODEV; + goto err_no_dev; + } + tp->rx_mode &= ~RX_MODE_ENABLE; tw32_f(MAC_RX_MODE, tp->rx_mode); udelay(10); @@ -8660,6 +8695,7 @@ static int tg3_abort_hw(struct tg3 *tp, bool silent) err |= tg3_stop_block(tp, BUFMGR_MODE, BUFMGR_MODE_ENABLE, silent); err |= tg3_stop_block(tp, MEMARB_MODE, MEMARB_MODE_ENABLE, silent); +err_no_dev: for (i = 0; i < tp->irq_cnt; i++) { struct tg3_napi *tnapi = &tp->napi[i]; if (tnapi->hw_status) -- cgit v0.10.2 From 397eada946712b90e0620c378b366bcc6c98c9f6 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 24 Jun 2013 17:13:23 +0200 Subject: gpio/omap: don't use linear domain mapping for OMAP1 Commit ede4d7a5 ("gpio/omap: convert gpio irq domain to linear mapping") converted the OMAP GPIO driver to use a linear mapping for the GPIO IRQ domain instead of using a legacy mapping. Not using a legacy mapping has a number of benefits but it requires the platform to support SPARSE_IRQ which currently is not supported on OMAP1. So this change caused a regression on OMAP1 platforms [1]. Since this issue is not present on all OMAP2+ platforms, there is no need to revert the driver to use legacy domain mapping for all the platforms. [1]: http://www.mail-archive.com/linux-omap@vger.kernel.org/msg89005.html Signed-off-by: Javier Martinez Canillas Tested-by: Aaro Koskinen Signed-off-by: Tony Lindgren diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index d3f7d2d..4a43036 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -1094,6 +1094,9 @@ static int omap_gpio_probe(struct platform_device *pdev) const struct omap_gpio_platform_data *pdata; struct resource *res; struct gpio_bank *bank; +#ifdef CONFIG_ARCH_OMAP1 + int irq_base; +#endif match = of_match_device(of_match_ptr(omap_gpio_match), dev); @@ -1135,11 +1138,28 @@ static int omap_gpio_probe(struct platform_device *pdev) pdata->get_context_loss_count; } +#ifdef CONFIG_ARCH_OMAP1 + /* + * REVISIT: Once we have OMAP1 supporting SPARSE_IRQ, we can drop + * irq_alloc_descs() and irq_domain_add_legacy() and just use a + * linear IRQ domain mapping for all OMAP platforms. + */ + irq_base = irq_alloc_descs(-1, 0, bank->width, 0); + if (irq_base < 0) { + dev_err(dev, "Couldn't allocate IRQ numbers\n"); + return -ENODEV; + } + bank->domain = irq_domain_add_legacy(node, bank->width, irq_base, + 0, &irq_domain_simple_ops, NULL); +#else bank->domain = irq_domain_add_linear(node, bank->width, &irq_domain_simple_ops, NULL); - if (!bank->domain) +#endif + if (!bank->domain) { + dev_err(dev, "Couldn't register an IRQ domain\n"); return -ENODEV; + } if (bank->regs->set_dataout && bank->regs->clr_dataout) bank->set_dataout = _set_gpio_dataout_reg; -- cgit v0.10.2 From 2976b10f05bd7f6dab9f9e7524451ddfed656a89 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Thu, 20 Jun 2013 11:36:28 +0200 Subject: perf: Disable monitoring on setuid processes for regular users There was a a bug in setup_new_exec(), whereby the test to disabled perf monitoring was not correct because the new credentials for the process were not yet committed and therefore the get_dumpable() test was never firing. The patch fixes the problem by moving the perf_event test until after the credentials are committed. Signed-off-by: Stephane Eranian Tested-by: Jiri Olsa Acked-by: Peter Zijlstra Cc: Signed-off-by: Ingo Molnar diff --git a/fs/exec.c b/fs/exec.c index 6430195..ffd7a81 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1135,13 +1135,6 @@ void setup_new_exec(struct linux_binprm * bprm) set_dumpable(current->mm, suid_dumpable); } - /* - * Flush performance counters when crossing a - * security domain: - */ - if (!get_dumpable(current->mm)) - perf_event_exit_task(current); - /* An exec changes our domain. We are no longer part of the thread group */ @@ -1205,6 +1198,15 @@ void install_exec_creds(struct linux_binprm *bprm) commit_creds(bprm->cred); bprm->cred = NULL; + + /* + * Disable monitoring for regular users + * when executing setuid binaries. Must + * wait until new credentials are committed + * by commit_creds() above + */ + if (get_dumpable(current->mm) != SUID_DUMP_USER) + perf_event_exit_task(current); /* * cred_guard_mutex must be held at least to this point to prevent * ptrace_attach() from altering our determination of the task's -- cgit v0.10.2 From 5dbe7c178d3f0a4634f088d9e729f1909b9ddcd1 Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Wed, 26 Jun 2013 17:23:42 +0200 Subject: net: fix kernel deadlock with interface rename and netdev name retrieval. When the kernel (compiled with CONFIG_PREEMPT=n) is performing the rename of a network interface, it can end up waiting for a workqueue to complete. If userland is able to invoke a SIOCGIFNAME ioctl or a SO_BINDTODEVICE getsockopt in between, the kernel will deadlock due to the fact that read_secklock_begin() will spin forever waiting for the writer process (the one doing the interface rename) to update the devnet_rename_seq sequence. This patch fixes the problem by adding a helper (netdev_get_name()) and using it in the code handling the SIOCGIFNAME ioctl and SO_BINDTODEVICE setsockopt. The netdev_get_name() helper uses raw_seqcount_begin() to avoid spinning forever, waiting for devnet_rename_seq->sequence to become even. cond_resched() is used in the contended case, before retrying the access to give the writer process a chance to finish. The use of raw_seqcount_begin() will incur some unneeded work in the reader process in the contended case, but this is better than deadlocking the system. Signed-off-by: Nicolas Schichan Acked-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 60584b1..96e4c21 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1695,6 +1695,7 @@ extern int init_dummy_netdev(struct net_device *dev); extern struct net_device *dev_get_by_index(struct net *net, int ifindex); extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); +extern int netdev_get_name(struct net *net, char *name, int ifindex); extern int dev_restart(struct net_device *dev); #ifdef CONFIG_NETPOLL_TRAP extern int netpoll_trap(void); diff --git a/net/core/dev.c b/net/core/dev.c index fc1e289..faebb39 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -792,6 +792,40 @@ struct net_device *dev_get_by_index(struct net *net, int ifindex) EXPORT_SYMBOL(dev_get_by_index); /** + * netdev_get_name - get a netdevice name, knowing its ifindex. + * @net: network namespace + * @name: a pointer to the buffer where the name will be stored. + * @ifindex: the ifindex of the interface to get the name from. + * + * The use of raw_seqcount_begin() and cond_resched() before + * retrying is required as we want to give the writers a chance + * to complete when CONFIG_PREEMPT is not set. + */ +int netdev_get_name(struct net *net, char *name, int ifindex) +{ + struct net_device *dev; + unsigned int seq; + +retry: + seq = raw_seqcount_begin(&devnet_rename_seq); + rcu_read_lock(); + dev = dev_get_by_index_rcu(net, ifindex); + if (!dev) { + rcu_read_unlock(); + return -ENODEV; + } + + strcpy(name, dev->name); + rcu_read_unlock(); + if (read_seqcount_retry(&devnet_rename_seq, seq)) { + cond_resched(); + goto retry; + } + + return 0; +} + +/** * dev_getbyhwaddr_rcu - find a device by its hardware address * @net: the applicable net namespace * @type: media type of device diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c index 6cc0481..5b7d0e1 100644 --- a/net/core/dev_ioctl.c +++ b/net/core/dev_ioctl.c @@ -19,9 +19,8 @@ static int dev_ifname(struct net *net, struct ifreq __user *arg) { - struct net_device *dev; struct ifreq ifr; - unsigned seq; + int error; /* * Fetch the caller's info block. @@ -30,19 +29,9 @@ static int dev_ifname(struct net *net, struct ifreq __user *arg) if (copy_from_user(&ifr, arg, sizeof(struct ifreq))) return -EFAULT; -retry: - seq = read_seqcount_begin(&devnet_rename_seq); - rcu_read_lock(); - dev = dev_get_by_index_rcu(net, ifr.ifr_ifindex); - if (!dev) { - rcu_read_unlock(); - return -ENODEV; - } - - strcpy(ifr.ifr_name, dev->name); - rcu_read_unlock(); - if (read_seqcount_retry(&devnet_rename_seq, seq)) - goto retry; + error = netdev_get_name(net, ifr.ifr_name, ifr.ifr_ifindex); + if (error) + return error; if (copy_to_user(arg, &ifr, sizeof(struct ifreq))) return -EFAULT; diff --git a/net/core/sock.c b/net/core/sock.c index 88868a9..d6d024c 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -571,9 +571,7 @@ static int sock_getbindtodevice(struct sock *sk, char __user *optval, int ret = -ENOPROTOOPT; #ifdef CONFIG_NETDEVICES struct net *net = sock_net(sk); - struct net_device *dev; char devname[IFNAMSIZ]; - unsigned seq; if (sk->sk_bound_dev_if == 0) { len = 0; @@ -584,20 +582,9 @@ static int sock_getbindtodevice(struct sock *sk, char __user *optval, if (len < IFNAMSIZ) goto out; -retry: - seq = read_seqcount_begin(&devnet_rename_seq); - rcu_read_lock(); - dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); - ret = -ENODEV; - if (!dev) { - rcu_read_unlock(); + ret = netdev_get_name(net, devname, sk->sk_bound_dev_if); + if (ret) goto out; - } - - strcpy(devname, dev->name); - rcu_read_unlock(); - if (read_seqcount_retry(&devnet_rename_seq, seq)) - goto retry; len = strlen(devname) + 1; -- cgit v0.10.2 From a963a37d384d71ad43b3e9e79d68d42fbe0901f3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 26 Jun 2013 04:15:07 -0700 Subject: ipv6: ip6_sk_dst_check() must not assume ipv6 dst It's possible to use AF_INET6 sockets and to connect to an IPv4 destination. After this, socket dst cache is a pointer to a rtable, not rt6_info. ip6_sk_dst_check() should check the socket dst cache is IPv6, or else various corruptions/crashes can happen. Dave Jones can reproduce immediate crash with trinity -q -l off -n -c sendmsg -c connect With help from Hannes Frederic Sowa Reported-by: Dave Jones Reported-by: Hannes Frederic Sowa Signed-off-by: Eric Dumazet Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 95703ba..d5d20cd 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -821,11 +821,17 @@ static struct dst_entry *ip6_sk_dst_check(struct sock *sk, const struct flowi6 *fl6) { struct ipv6_pinfo *np = inet6_sk(sk); - struct rt6_info *rt = (struct rt6_info *)dst; + struct rt6_info *rt; if (!dst) goto out; + if (dst->ops->family != AF_INET6) { + dst_release(dst); + return NULL; + } + + rt = (struct rt6_info *)dst; /* Yes, checking route validity in not connected * case is not very simple. Take into account, * that we do not support routing by source, TOS, -- cgit v0.10.2 From a5cc68f3d63306d0d288f31edfc2ae6ef8ecd887 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Wed, 26 Jun 2013 23:52:30 +0200 Subject: af_key: fix info leaks in notify messages key_notify_sa_flush() and key_notify_policy_flush() miss to initialize the sadb_msg_reserved member of the broadcasted message and thereby leak 2 bytes of heap memory to listeners. Fix that. Signed-off-by: Mathias Krause Cc: Steffen Klassert Cc: "David S. Miller" Cc: Herbert Xu Signed-off-by: David S. Miller diff --git a/net/key/af_key.c b/net/key/af_key.c index c5fbd75..9da8620 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -1710,6 +1710,7 @@ static int key_notify_sa_flush(const struct km_event *c) hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_errno = (uint8_t) 0; hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t)); + hdr->sadb_msg_reserved = 0; pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net); @@ -2699,6 +2700,7 @@ static int key_notify_policy_flush(const struct km_event *c) hdr->sadb_msg_errno = (uint8_t) 0; hdr->sadb_msg_satype = SADB_SATYPE_UNSPEC; hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t)); + hdr->sadb_msg_reserved = 0; pfkey_broadcast(skb_out, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net); return 0; -- cgit v0.10.2 From 11eb2645cbf38a08ae491bf6c602eea900ec0bb5 Mon Sep 17 00:00:00 2001 From: Zefan Li Date: Wed, 26 Jun 2013 15:29:54 +0800 Subject: dlci: acquire rtnl_lock before calling __dev_get_by_name() Otherwise the net device returned can be freed at anytime. Signed-off-by: Li Zefan Cc: stable@vger.kernel.org Signed-off-by: David S. Miller diff --git a/drivers/net/wan/dlci.c b/drivers/net/wan/dlci.c index 147614e..1f6e053 100644 --- a/drivers/net/wan/dlci.c +++ b/drivers/net/wan/dlci.c @@ -385,20 +385,24 @@ static int dlci_del(struct dlci_add *dlci) struct net_device *master, *slave; int err; + rtnl_lock(); + /* validate slave device */ master = __dev_get_by_name(&init_net, dlci->devname); - if (!master) - return -ENODEV; + if (!master) { + err = -ENODEV; + goto out; + } if (netif_running(master)) { - return -EBUSY; + err = -EBUSY; + goto out; } dlp = netdev_priv(master); slave = dlp->slave; flp = netdev_priv(slave); - rtnl_lock(); err = (*flp->deassoc)(slave, master); if (!err) { list_del(&dlp->list); @@ -407,8 +411,8 @@ static int dlci_del(struct dlci_add *dlci) dev_put(slave); } +out: rtnl_unlock(); - return err; } -- cgit v0.10.2 From 578a1310f2592ba90c5674bca21c1dbd1adf3f0a Mon Sep 17 00:00:00 2001 From: Zefan Li Date: Wed, 26 Jun 2013 15:31:58 +0800 Subject: dlci: validate the net device in dlci_del() We triggered an oops while running trinity with 3.4 kernel: BUG: unable to handle kernel paging request at 0000000100000d07 IP: [] dlci_ioctl+0xd8/0x2d4 [dlci] PGD 640c0d067 PUD 0 Oops: 0000 [#1] PREEMPT SMP CPU 3 ... Pid: 7302, comm: trinity-child3 Not tainted 3.4.24.09+ 40 Huawei Technologies Co., Ltd. Tecal RH2285 /BC11BTSA RIP: 0010:[] [] dlci_ioctl+0xd8/0x2d4 [dlci] ... Call Trace: [] sock_ioctl+0x153/0x280 [] do_vfs_ioctl+0xa4/0x5e0 [] ? fget_light+0x3ea/0x490 [] sys_ioctl+0x4f/0x80 [] system_call_fastpath+0x16/0x1b ... It's because the net device is not a dlci device. Reported-by: Li Jinyue Signed-off-by: Li Zefan Cc: stable@vger.kernel.org Signed-off-by: David S. Miller diff --git a/drivers/net/wan/dlci.c b/drivers/net/wan/dlci.c index 1f6e053..6a8a382 100644 --- a/drivers/net/wan/dlci.c +++ b/drivers/net/wan/dlci.c @@ -384,6 +384,7 @@ static int dlci_del(struct dlci_add *dlci) struct frad_local *flp; struct net_device *master, *slave; int err; + bool found = false; rtnl_lock(); @@ -394,6 +395,17 @@ static int dlci_del(struct dlci_add *dlci) goto out; } + list_for_each_entry(dlp, &dlci_devs, list) { + if (dlp->master == master) { + found = true; + break; + } + } + if (!found) { + err = -ENODEV; + goto out; + } + if (netif_running(master)) { err = -EBUSY; goto out; -- cgit v0.10.2 From d2d1f17a0dad823a4cb71583433d26cd7f734e08 Mon Sep 17 00:00:00 2001 From: Josh Durgin Date: Wed, 26 Jun 2013 12:56:17 -0700 Subject: rbd: send snapshot context with writes Sending the right snapshot context with each write is required for snapshots to work. Due to the ordering of calls, the snapshot context is never set for any requests. This causes writes to the current version of the image to be reflected in all snapshots, which are supposed to be read-only. This happens because rbd_osd_req_format_write() sets the snapshot context based on obj_request->img_request. At this point, however, obj_request->img_request has not been set yet, to the snapshot context is set to NULL. Fix this by moving rbd_img_obj_request_add(), which sets obj_request->img_request, before the osd request formatting calls. This resolves: http://tracker.ceph.com/issues/5465 Reported-by: Karol Jurak Signed-off-by: Josh Durgin Reviewed-by: Sage Weil Reviewed-by: Alex Elder diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 7c66173..c8eb9cb 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -2254,13 +2254,17 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request, obj_request->pages, length, offset & ~PAGE_MASK, false, false); + /* + * set obj_request->img_request before formatting + * the osd_request so that it gets the right snapc + */ + rbd_img_obj_request_add(img_request, obj_request); if (write_request) rbd_osd_req_format_write(obj_request); else rbd_osd_req_format_read(obj_request); obj_request->img_offset = img_offset; - rbd_img_obj_request_add(img_request, obj_request); img_offset += length; resid -= length; -- cgit v0.10.2 From 1abd601864f42a5d10e6fa0b66582591b4497b94 Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Thu, 27 Jun 2013 18:00:10 -0300 Subject: powerpc/eeh: Add eeh_dev to the cache during boot commit f8f7d63fd96ead101415a1302035137a866f8998 ("powerpc/eeh: Trace eeh device from I/O cache") broke EEH on pseries for devices that were present during boot and have not been hotplugged/DLPARed. eeh_check_failure will get the eeh_dev from the cache, and will get NULL. eeh_addr_cache_build adds the addresses to the cache, but eeh_dev for the giving pci_device is not set yet. Just reordering the call to eeh_addr_cache_insert_dev works fine. The ordering is similar to the one in eeh_add_device_late. Signed-off-by: Thadeu Lima de Souza Cascardo Acked-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/pseries/eeh_cache.c b/arch/powerpc/platforms/pseries/eeh_cache.c index 5a4c879..5ce3ba7 100644 --- a/arch/powerpc/platforms/pseries/eeh_cache.c +++ b/arch/powerpc/platforms/pseries/eeh_cache.c @@ -294,8 +294,6 @@ void __init eeh_addr_cache_build(void) spin_lock_init(&pci_io_addr_cache_root.piar_lock); for_each_pci_dev(dev) { - eeh_addr_cache_insert_dev(dev); - dn = pci_device_to_OF_node(dev); if (!dn) continue; @@ -308,6 +306,8 @@ void __init eeh_addr_cache_build(void) dev->dev.archdata.edev = edev; edev->pdev = dev; + eeh_addr_cache_insert_dev(dev); + eeh_sysfs_add_device(dev); } -- cgit v0.10.2 From 18097b91aaff215e843f04b84ec2c686270bb55f Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 28 Jun 2013 13:27:40 +1000 Subject: drm/qxl: add missing access check for execbuffer ioctl Reported-by: Mathieu Desnoyers Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c index a4b71b2..a30f294 100644 --- a/drivers/gpu/drm/qxl/qxl_ioctl.c +++ b/drivers/gpu/drm/qxl/qxl_ioctl.c @@ -171,6 +171,11 @@ static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, if (user_cmd.command_size > PAGE_SIZE - sizeof(union qxl_release_info)) return -EINVAL; + if (!access_ok(VERIFY_READ, + (void *)(unsigned long)user_cmd.command, + user_cmd.command_size)) + return -EFAULT; + ret = qxl_alloc_release_reserved(qdev, sizeof(union qxl_release_info) + user_cmd.command_size, -- cgit v0.10.2 From c6dc9f0a4eeb7c014904475372c66e6d0ac5a572 Mon Sep 17 00:00:00 2001 From: Akira Takeuchi Date: Fri, 28 Jun 2013 16:53:01 +0100 Subject: mn10300: Allow to pass array name to get_user() This fixes the following compile error: CC block/scsi_ioctl.o block/scsi_ioctl.c: In function 'sg_scsi_ioctl': block/scsi_ioctl.c:449: error: invalid initializer Signed-off-by: David Howells diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h index 780560b..d7966e0 100644 --- a/arch/mn10300/include/asm/uaccess.h +++ b/arch/mn10300/include/asm/uaccess.h @@ -161,7 +161,7 @@ struct __large_struct { unsigned long buf[100]; }; #define __get_user_check(x, ptr, size) \ ({ \ - const __typeof__(ptr) __guc_ptr = (ptr); \ + const __typeof__(*(ptr))* __guc_ptr = (ptr); \ int _e; \ if (likely(__access_ok((unsigned long) __guc_ptr, (size)))) \ _e = __get_user_nocheck((x), __guc_ptr, (size)); \ -- cgit v0.10.2 From e3f12a53042e26202993baa3ad4ff8768173653d Mon Sep 17 00:00:00 2001 From: Akira Takeuchi Date: Fri, 28 Jun 2013 16:53:03 +0100 Subject: mn10300: Use early_param() to parse "mem=" parameter This fixes the problem that "init=" options may not be passed to kernel correctly. parse_mem_cmdline() of mn10300 arch gets rid of "mem=" string from redboot_command_line. Then init_setup() parses the "init=" options from static_command_line, which is a copy of redboot_command_line, and keeps the pointer to the init options in execute_command variable. Since the commit 026cee0 upstream (params: _initcall-like kernel parameters), static_command_line becomes overwritten by saved_command_line at do_initcall_level(). Notice that saved_command_line is a command line which includes "mem=" string. As a result, execute_command may point to weird string by the length of "mem=" parameter. I noticed this problem when using the command line like this: mem=128M console=ttyS0,115200 init=/bin/sh Here is the processing flow of command line parameters. start_kernel() setup_arch(&command_line) parse_mem_cmdline(cmdline_p) * strcpy(boot_command_line, redboot_command_line); * Remove "mem=xxx" from redboot_command_line. * *cmdline_p = redboot_command_line; setup_command_line(command_line) <-- command_line is redboot_command_line * strcpy(saved_command_line, boot_command_line) * strcpy(static_command_line, command_line) parse_early_param() strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE); parse_early_options(tmp_cmdline); parse_args("early options", cmdline, NULL, 0, 0, 0, do_early_param); parse_args("Booting ..", static_command_line, ...); init_setup() <-- save the pointer in execute_command rest_init() kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND); At this point, execute_command points to "/bin/sh" string. kernel_init() kernel_init_freeable() do_basic_setup() do_initcalls() do_initcall_level() (*) strcpy(static_command_line, saved_command_line); Here, execute_command gets to point to "200" string !! Signed-off-by: David Howells diff --git a/arch/mn10300/kernel/setup.c b/arch/mn10300/kernel/setup.c index 33c3bd1..ebac9c1 100644 --- a/arch/mn10300/kernel/setup.c +++ b/arch/mn10300/kernel/setup.c @@ -38,6 +38,7 @@ struct mn10300_cpuinfo boot_cpu_data; /* For PCI or other memory-mapped resources */ unsigned long pci_mem_start = 0x18000000; +static char __initdata cmd_line[COMMAND_LINE_SIZE]; char redboot_command_line[COMMAND_LINE_SIZE] = "console=ttyS0,115200 root=/dev/mtdblock3 rw"; @@ -74,45 +75,19 @@ static const char *const mn10300_cputypes[] = { }; /* - * + * Pick out the memory size. We look for mem=size, + * where size is "size[KkMm]" */ -static void __init parse_mem_cmdline(char **cmdline_p) +static int __init early_mem(char *p) { - char *from, *to, c; - - /* save unparsed command line copy for /proc/cmdline */ - strcpy(boot_command_line, redboot_command_line); - - /* see if there's an explicit memory size option */ - from = redboot_command_line; - to = redboot_command_line; - c = ' '; - - for (;;) { - if (c == ' ' && !memcmp(from, "mem=", 4)) { - if (to != redboot_command_line) - to--; - memory_size = memparse(from + 4, &from); - } - - c = *(from++); - if (!c) - break; - - *(to++) = c; - } - - *to = '\0'; - *cmdline_p = redboot_command_line; + memory_size = memparse(p, &p); if (memory_size == 0) panic("Memory size not known\n"); - memory_end = (unsigned long) CONFIG_KERNEL_RAM_BASE_ADDRESS + - memory_size; - if (memory_end > phys_memory_end) - memory_end = phys_memory_end; + return 0; } +early_param("mem", early_mem); /* * architecture specific setup @@ -125,7 +100,20 @@ void __init setup_arch(char **cmdline_p) cpu_init(); unit_setup(); smp_init_cpus(); - parse_mem_cmdline(cmdline_p); + + /* save unparsed command line copy for /proc/cmdline */ + strlcpy(boot_command_line, redboot_command_line, COMMAND_LINE_SIZE); + + /* populate cmd_line too for later use, preserving boot_command_line */ + strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE); + *cmdline_p = cmd_line; + + parse_early_param(); + + memory_end = (unsigned long) CONFIG_KERNEL_RAM_BASE_ADDRESS + + memory_size; + if (memory_end > phys_memory_end) + memory_end = phys_memory_end; init_mm.start_code = (unsigned long)&_text; init_mm.end_code = (unsigned long) &_etext; -- cgit v0.10.2 From 33f1a63ae84dfd9ad298cf275b8f1887043ced36 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 28 Jun 2013 14:15:14 +0300 Subject: UBIFS: prepare to fix a horrid bug Al Viro pointed me to the fact that '->readdir()' and '->llseek()' have no mutual exclusion, which means the 'ubifs_dir_llseek()' can be run while we are in the middle of 'ubifs_readdir()'. First of all, this means that 'file->private_data' can be freed while 'ubifs_readdir()' uses it. But this particular patch does not fix the problem. This patch is only a preparation, and the fix will follow next. In this patch we make 'ubifs_readdir()' stop using 'file->f_pos' directly, because 'file->f_pos' can be changed by '->llseek()' at any point. This may lead 'ubifs_readdir()' to returning inconsistent data: directory entry names may correspond to incorrect file positions. So here we introduce a local variable 'pos', read 'file->f_pose' once at very the beginning, and then stick to 'pos'. The result of this is that when 'ubifs_dir_llseek()' changes 'file->f_pos' while we are in the middle of 'ubifs_readdir()', the latter "wins". Cc: stable@vger.kernel.org Reported-by: Al Viro Tested-by: Artem Bityutskiy Signed-off-by: Artem Bityutskiy Signed-off-by: Al Viro diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index de08c92f..8e587af 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -349,15 +349,16 @@ static unsigned int vfs_dent_type(uint8_t type) static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) { int err, over = 0; + loff_t pos = file->f_pos; struct qstr nm; union ubifs_key key; struct ubifs_dent_node *dent; struct inode *dir = file_inode(file); struct ubifs_info *c = dir->i_sb->s_fs_info; - dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, file->f_pos); + dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, pos); - if (file->f_pos > UBIFS_S_KEY_HASH_MASK || file->f_pos == 2) + if (pos > UBIFS_S_KEY_HASH_MASK || pos == 2) /* * The directory was seek'ed to a senseless position or there * are no more entries. @@ -365,15 +366,15 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) return 0; /* File positions 0 and 1 correspond to "." and ".." */ - if (file->f_pos == 0) { + if (pos == 0) { ubifs_assert(!file->private_data); over = filldir(dirent, ".", 1, 0, dir->i_ino, DT_DIR); if (over) return 0; - file->f_pos = 1; + file->f_pos = pos = 1; } - if (file->f_pos == 1) { + if (pos == 1) { ubifs_assert(!file->private_data); over = filldir(dirent, "..", 2, 1, parent_ino(file->f_path.dentry), DT_DIR); @@ -389,7 +390,7 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) goto out; } - file->f_pos = key_hash_flash(c, &dent->key); + file->f_pos = pos = key_hash_flash(c, &dent->key); file->private_data = dent; } @@ -397,17 +398,16 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) if (!dent) { /* * The directory was seek'ed to and is now readdir'ed. - * Find the entry corresponding to @file->f_pos or the - * closest one. + * Find the entry corresponding to @pos or the closest one. */ - dent_key_init_hash(c, &key, dir->i_ino, file->f_pos); + dent_key_init_hash(c, &key, dir->i_ino, pos); nm.name = NULL; dent = ubifs_tnc_next_ent(c, &key, &nm); if (IS_ERR(dent)) { err = PTR_ERR(dent); goto out; } - file->f_pos = key_hash_flash(c, &dent->key); + file->f_pos = pos = key_hash_flash(c, &dent->key); file->private_data = dent; } @@ -419,7 +419,7 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) ubifs_inode(dir)->creat_sqnum); nm.len = le16_to_cpu(dent->nlen); - over = filldir(dirent, dent->name, nm.len, file->f_pos, + over = filldir(dirent, dent->name, nm.len, pos, le64_to_cpu(dent->inum), vfs_dent_type(dent->type)); if (over) @@ -435,7 +435,7 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) } kfree(file->private_data); - file->f_pos = key_hash_flash(c, &dent->key); + file->f_pos = pos = key_hash_flash(c, &dent->key); file->private_data = dent; cond_resched(); } -- cgit v0.10.2 From 605c912bb843c024b1ed173dc427cd5c08e5d54d Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 28 Jun 2013 14:15:15 +0300 Subject: UBIFS: fix a horrid bug Al Viro pointed me to the fact that '->readdir()' and '->llseek()' have no mutual exclusion, which means the 'ubifs_dir_llseek()' can be run while we are in the middle of 'ubifs_readdir()'. This means that 'file->private_data' can be freed while 'ubifs_readdir()' uses it, and this is a very bad bug: not only 'ubifs_readdir()' can return garbage, but this may corrupt memory and lead to all kinds of problems like crashes an security holes. This patch fixes the problem by using the 'file->f_version' field, which '->llseek()' always unconditionally sets to zero. We set it to 1 in 'ubifs_readdir()' and whenever we detect that it became 0, we know there was a seek and it is time to clear the state saved in 'file->private_data'. I tested this patch by writing a user-space program which runds readdir and seek in parallell. I could easily crash the kernel without these patches, but could not crash it with these patches. Cc: stable@vger.kernel.org Reported-by: Al Viro Tested-by: Artem Bityutskiy Signed-off-by: Artem Bityutskiy Signed-off-by: Al Viro diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index 8e587af..605af51 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -365,6 +365,24 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) */ return 0; + if (file->f_version == 0) { + /* + * The file was seek'ed, which means that @file->private_data + * is now invalid. This may also be just the first + * 'ubifs_readdir()' invocation, in which case + * @file->private_data is NULL, and the below code is + * basically a no-op. + */ + kfree(file->private_data); + file->private_data = NULL; + } + + /* + * 'generic_file_llseek()' unconditionally sets @file->f_version to + * zero, and we use this for detecting whether the file was seek'ed. + */ + file->f_version = 1; + /* File positions 0 and 1 correspond to "." and ".." */ if (pos == 0) { ubifs_assert(!file->private_data); @@ -438,6 +456,14 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir) file->f_pos = pos = key_hash_flash(c, &dent->key); file->private_data = dent; cond_resched(); + + if (file->f_version == 0) + /* + * The file was seek'ed meanwhile, lets return and start + * reading direntries from the new position on the next + * invocation. + */ + return 0; } out: @@ -448,15 +474,13 @@ out: kfree(file->private_data); file->private_data = NULL; + /* 2 is a special value indicating that there are no more direntries */ file->f_pos = 2; return 0; } -/* If a directory is seeked, we have to free saved readdir() state */ static loff_t ubifs_dir_llseek(struct file *file, loff_t offset, int whence) { - kfree(file->private_data); - file->private_data = NULL; return generic_file_llseek(file, offset, whence); } -- cgit v0.10.2 From 706b23bde27a391f0974df2a8351661770fa2e07 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Fri, 28 Jun 2013 09:49:46 -0400 Subject: Fix: kernel/ptrace.c: ptrace_peek_siginfo() missing __put_user() validation This __put_user() could be used by unprivileged processes to write into kernel memory. The issue here is that even if copy_siginfo_to_user() fails, the error code is not checked before __put_user() is executed. Luckily, ptrace_peek_siginfo() has been added within the 3.10-rc cycle, so it has not hit a stable release yet. Signed-off-by: Mathieu Desnoyers Acked-by: Oleg Nesterov Cc: Andrey Vagin Cc: Roland McGrath Cc: Paul McKenney Cc: David Howells Cc: Dave Jones Cc: Pavel Emelyanov Cc: Pedro Alves Cc: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/ptrace.c b/kernel/ptrace.c index aed981a..335a7ae 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -665,20 +665,22 @@ static int ptrace_peek_siginfo(struct task_struct *child, if (unlikely(is_compat_task())) { compat_siginfo_t __user *uinfo = compat_ptr(data); - ret = copy_siginfo_to_user32(uinfo, &info); - ret |= __put_user(info.si_code, &uinfo->si_code); + if (copy_siginfo_to_user32(uinfo, &info) || + __put_user(info.si_code, &uinfo->si_code)) { + ret = -EFAULT; + break; + } + } else #endif { siginfo_t __user *uinfo = (siginfo_t __user *) data; - ret = copy_siginfo_to_user(uinfo, &info); - ret |= __put_user(info.si_code, &uinfo->si_code); - } - - if (ret) { - ret = -EFAULT; - break; + if (copy_siginfo_to_user(uinfo, &info) || + __put_user(info.si_code, &uinfo->si_code)) { + ret = -EFAULT; + break; + } } data += sizeof(siginfo_t); -- cgit v0.10.2 From 7846de406f43df98ac9864212dcfe3f2816bdb04 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Mon, 10 Jun 2013 10:18:08 -0700 Subject: powerpc/pci: Improve device hotplug initialization Commit 37f02195b (powerpc/pci: fix PCI-e devices rescan issue on powerpc platform) fixes a problem with interrupt and DMA initialization on hot plugged devices. With this commit, interrupt and DMA initialization for hot plugged devices is handled in the pci device enable function. This approach has a couple of drawbacks. First, it creates two code paths for device initialization, one for hot plugged devices and another for devices known during the initial PCI scan. Second, the initialization code for hot plugged devices is only called when the device is enabled, ie typically in the probe function. Also, the platform specific setup code is called each time pci_enable_device() is called, not only once during device discovery, meaning it is actually called multiple times, once for devices discovered during the initial scan and again each time a driver is re-loaded. The visible result is that interrupt pins are only assigned to hot plugged devices when the device driver is loaded. Effectively this changes the PCI probe API, since pci_dev->irq and the device's dma configuration will now only be valid after pci_enable() was called at least once. A more subtle change is that platform specific PCI device setup is moved from device discovery into the driver's probe function, more specifically into the pci_enable_device() call. To fix the inconsistencies, add new function pcibios_add_device. Call pcibios_setup_device from pcibios_setup_bus_devices if device setup is not complete, and from pcibios_add_device if bus setup is complete. With this change, device setup code is moved back into device initialization, and called exactly once for both static and hot plugged devices. [ This also fixes a regression introduced by the above patch which causes dev->irq to be overwritten under some cirumstances after MSIs have been enabled for the device which leads to crashes due to the MSI core "hijacking" dev->irq to store the base MSI number and not the LSI. --BenH ] Cc: Yuanquan Chen Cc: Benjamin Herrenschmidt Cc: Hiroo Matsumoto Signed-off-by: Guenter Roeck Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index eabeec9..f46914a 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -994,7 +994,7 @@ void pcibios_setup_bus_self(struct pci_bus *bus) ppc_md.pci_dma_bus_setup(bus); } -void pcibios_setup_device(struct pci_dev *dev) +static void pcibios_setup_device(struct pci_dev *dev) { /* Fixup NUMA node as it may not be setup yet by the generic * code and is needed by the DMA init @@ -1015,6 +1015,17 @@ void pcibios_setup_device(struct pci_dev *dev) ppc_md.pci_irq_fixup(dev); } +int pcibios_add_device(struct pci_dev *dev) +{ + /* + * We can only call pcibios_setup_device() after bus setup is complete, + * since some of the platform specific DMA setup code depends on it. + */ + if (dev->bus->is_added) + pcibios_setup_device(dev); + return 0; +} + void pcibios_setup_bus_devices(struct pci_bus *bus) { struct pci_dev *dev; @@ -1469,10 +1480,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask) if (ppc_md.pcibios_enable_device_hook(dev)) return -EINVAL; - /* avoid pcie irq fix up impact on cardbus */ - if (dev->hdr_type != PCI_HEADER_TYPE_CARDBUS) - pcibios_setup_device(dev); - return pci_enable_resources(dev, mask); } -- cgit v0.10.2 From 8d5bc1a6ac40885078bbb0552b4283a3e58c462e Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sat, 29 Jun 2013 16:25:14 -0700 Subject: ARM: dt: Only print warning, not WARN() on bad cpu map in device tree Due to recent changes and expecations of proper cpu bindings, there are now cases for many of the in-tree devicetrees where a WARN() will hit on boot due to badly formatted /cpus nodes. Downgrade this to a pr_warn() to be less alarmist, since it's not a new problem. Tested on Arndale, Cubox, Seaboard and Panda ES. Panda hits the WARN without this, the others do not. Acked-by: Russell King Signed-off-by: Olof Johansson Signed-off-by: Linus Torvalds diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index 0905502..5859c8b 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -152,9 +152,10 @@ void __init arm_dt_init_cpu_maps(void) tmp_map[i] = hwid; } - if (WARN(!bootcpu_valid, "DT missing boot CPU MPIDR[23:0], " - "fall back to default cpu_logical_map\n")) + if (!bootcpu_valid) { + pr_warn("DT missing boot CPU MPIDR[23:0], fall back to default cpu_logical_map\n"); return; + } /* * Since the boot CPU node contains proper data, and all nodes have -- cgit v0.10.2 From ea461abf61753b4b79e625a7c20650105b990f21 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 5 Jun 2013 15:34:02 +0800 Subject: powerpc/eeh: Fix fetching bus for single-dev-PE While running Linux as guest on top of phyp, we possiblly have PE that includes single PCI device. However, we didn't return its PCI bus correctly and it leads to failure on recovery from EEH errors for single-dev-PE. The patch fixes the issue. Cc: # v3.7+ Cc: Steve Best Signed-off-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/pseries/eeh_pe.c b/arch/powerpc/platforms/pseries/eeh_pe.c index fe43d1a..9d4a9e8 100644 --- a/arch/powerpc/platforms/pseries/eeh_pe.c +++ b/arch/powerpc/platforms/pseries/eeh_pe.c @@ -639,7 +639,8 @@ struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe) if (pe->type & EEH_PE_PHB) { bus = pe->phb->bus; - } else if (pe->type & EEH_PE_BUS) { + } else if (pe->type & EEH_PE_BUS || + pe->type & EEH_PE_DEVICE) { edev = list_first_entry(&pe->edevs, struct eeh_dev, list); pdev = eeh_dev_to_pci_dev(edev); if (pdev) -- cgit v0.10.2 From 8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 30 Jun 2013 15:13:29 -0700 Subject: Linux 3.10 diff --git a/Makefile b/Makefile index 0142c93..e5e3ba0 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 10 SUBLEVEL = 0 -EXTRAVERSION = -rc7 +EXTRAVERSION = NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v0.10.2