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2014-03-05drm/i915: Prevent MI_DISPLAY_FLIP straddling two cachelines on IVBVille Syrjälä
commit f66fab8e1cd6b3127ba4c5c0d11539fbe1de1e36 upstream. According to BSpec the entire MI_DISPLAY_FLIP packet must be contained in a single cacheline. Make sure that happens. v2: Use intel_ring_begin_cacheline_safe() v3: Use intel_ring_cacheline_align() (Chris) Cc: Bjoern C <lkml@call-home.ch> Cc: Alexandru DAMIAN <alexandru.damian@intel.com> Cc: Enrico Tagliavini <enrico.tagliavini@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74053 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-03-05drm/i915: Add intel_ring_cachline_align()Ville Syrjälä
commit 753b1ad4a281b0663329409d410243e91825c323 upstream. intel_ring_cachline_align() emits MI_NOOPs until the ring tail is aligned to a cacheline boundary. Cc: Bjoern C <lkml@call-home.ch> Cc: Alexandru DAMIAN <alexandru.damian@intel.com> Cc: Enrico Tagliavini <enrico.tagliavini@gmail.com> Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-03-05drm/nv50/disp: use correct register to determine DP display bppIlia Mirkin
commit a7f1c1e65b68e1e1ab70898528d5977ed68a0a7d upstream. Commit 0a0afd282f ("drm/nv50-/disp: move DP link training to core and train from supervisor") added code that uses the wrong register for computing the display bpp, used for bandwidth calculation. Adjust to use the same register as used by exec_clkcmp and nv50_disp_intr_unk20_2_dp. Reported-by: Torsten Wagner <torsten.wagner@gmail.com> Reported-by: Michael Gulick <mgulick@mathworks.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67628 Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-03-05drm/nouveau: set irq_enabled manuallyIlia Mirkin
commit 7d3428cd4b2ad51af86fdbdf8284ca38fa95e601 upstream. Since commit 0fa9061ae8c ("drm/nouveau/mc: handle irq-related setup ourselves"), drm_device->irq_enabled remained unset. This is needed in order to properly wait for a vblank event in the generic drm code. See https://bugs.freedesktop.org/show_bug.cgi?id=74195 Reported-by: Jan Janecek <janjanjanx@gmail.com> Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-03-05drm/radeon/ni: fix typo in dpm sq ramping setupAlex Deucher
commit 21ed4947fdfe19b60a27b84162622e56439c7937 upstream. inverted logic. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-26bonding: 802.3ad: make aggregator_identifier bond-privateJiri Bohac
[ Upstream commit 163c8ff30dbe473abfbb24a7eac5536c87f3baa9 ] aggregator_identifier is used to assign unique aggregator identifiers to aggregators of a bond during device enslaving. aggregator_identifier is currently a global variable that is zeroed in bond_3ad_initialize(). This sequence will lead to duplicate aggregator identifiers for eth1 and eth3: create bond0 change bond0 mode to 802.3ad enslave eth0 to bond0 //eth0 gets agg id 1 enslave eth1 to bond0 //eth1 gets agg id 2 create bond1 change bond1 mode to 802.3ad enslave eth2 to bond1 //aggregator_identifier is reset to 0 //eth2 gets agg id 1 enslave eth3 to bond0 //eth3 gets agg id 2 Fix this by making aggregator_identifier private to the bond. Signed-off-by: Jiri Bohac <jbohac@suse.cz> Acked-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-26usbnet: remove generic hard_header_len checkEmil Goode
[ Upstream commit eb85569fe2d06c2fbf4de7b66c263ca095b397aa ] This patch removes a generic hard_header_len check from the usbnet module that is causing dropped packages under certain circumstances for devices that send rx packets that cross urb boundaries. One example is the AX88772B which occasionally send rx packets that cross urb boundaries where the remaining partial packet is sent with no hardware header. When the buffer with a partial packet is of less number of octets than the value of hard_header_len the buffer is discarded by the usbnet module. With AX88772B this can be reproduced by using ping with a packet size between 1965-1976. The bug has been reported here: https://bugzilla.kernel.org/show_bug.cgi?id=29082 This patch introduces the following changes: - Removes the generic hard_header_len check in the rx_complete function in the usbnet module. - Introduces a ETH_HLEN check for skbs that are not cloned from within a rx_fixup callback. - For safety a hard_header_len check is added to each rx_fixup callback function that could be affected by this change. These extra checks could possibly be removed by someone who has the hardware to test. - Removes a call to dev_kfree_skb_any() and instead utilizes the dev->done list to queue skbs for cleanup. The changes place full responsibility on the rx_fixup callback functions that clone skbs to only pass valid skbs to the usbnet_skb_return function. Signed-off-by: Emil Goode <emilgoode@gmail.com> Reported-by: Igor Gnatenko <i.gnatenko.brain@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-26net: asix: add missing flag to struct driver_infoEmil Goode
[ Upstream commit d43ff4cd798911736fb39025ec8004284b1b0bc2 ] The struct driver_info ax88178_info is assigned the function asix_rx_fixup_common as it's rx_fixup callback. This means that FLAG_MULTI_PACKET must be set as this function is cloning the data and calling usbnet_skb_return. Not setting this flag leads to usbnet_skb_return beeing called a second time from within the rx_process function in the usbnet module. Signed-off-by: Emil Goode <emilgoode@gmail.com> Reported-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-26vhost: fix ref cnt checking deadlockMichael S. Tsirkin
[ Upstream commit 0ad8b480d6ee916aa84324f69acf690142aecd0e ] vhost checked the counter within the refcnt before decrementing. It really wanted to know that it is the one that has the last reference, as a way to batch freeing resources a bit more efficiently. Note: we only let refcount go to 0 on device release. This works well but we now access the ref counter twice so there's a race: all users might see a high count and decide to defer freeing resources. In the end no one initiates freeing resources until the last reference is gone (which is on VM shotdown so might happen after a looooong time). Let's do what we probably should have done straight away: switch from kref to plain atomic, documenting the semantics, return the refcount value atomically after decrement, then use that to avoid the deadlock. Reported-by: Qin Chuanyu <qinchuanyu@huawei.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-26tg3: Fix deadlock in tg3_change_mtu()Nithin Sujir
[ Upstream commit c6993dfd7db9b0c6b7ca7503a56fda9236a4710f ] Quoting David Vrabel - "5780 cards cannot have jumbo frames and TSO enabled together. When jumbo frames are enabled by setting the MTU, the TSO feature must be cleared. This is done indirectly by calling netdev_update_features() which will call tg3_fix_features() to actually clear the flags. netdev_update_features() will also trigger a new netlink message for the feature change event which will result in a call to tg3_get_stats64() which deadlocks on the tg3 lock." tg3_set_mtu() does not need to be under the tg3 lock since converting the flags to use set_bit(). Move it out to after tg3_netif_stop(). Reported-by: David Vrabel <david.vrabel@citrix.com> Tested-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-26net: qmi_wwan: add Netgear Aircard 340UBjørn Mork
[ Upstream commit fbd3a77d813f211060f86cc7a2f8416caf0e03b1 ] This device was mentioned in an OpenWRT forum. Seems to have a "standard" Sierra Wireless ifnumber to function layout: 0: qcdm 2: nmea 3: modem 8: qmi 9: storage Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-26can: add destructor for self generated skbsOliver Hartkopp
[ Upstream commit 0ae89beb283a0db5980d1d4781c7d7be2f2810d6 ] Self generated skbuffs in net/can/bcm.c are setting a skb->sk reference but no explicit destructor which is enforced since Linux 3.11 with commit 376c7311bdb6 (net: add a temporary sanity check in skb_orphan()). This patch adds some helper functions to make sure that a destructor is properly defined when a sock reference is assigned to a CAN related skb. To create an unshared skb owned by the original sock a common helper function has been introduced to replace open coded functions to create CAN echo skbs. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Tested-by: Andre Naujoks <nautsch2@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-02-22EDAC: Correct workqueue setup pathBorislav Petkov
commit cb6ef42e516cb8948f15e4b70dc03af8020050a2 upstream. We're using edac_mc_workq_setup() both on the init path, when we load an edac driver and when we change the polling period (edac_mc_reset_delay_period) through /sys/.../edac_mc_poll_msec. On that second path we don't need to init the workqueue which has been initialized already. Thanks to Tejun for workqueue insights. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22EDAC: Poll timeout cannot be zero, p2Borislav Petkov
commit 9da21b1509d8aa7ab4846722817d16c72d656c91 upstream. Sanitize code even more to accept unsigned longs only and to not allow polling intervals below 1 second as this is unnecessary and doesn't make much sense anyway for polling errors. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com Cc: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22drivers/edac/edac_mc_sysfs.c: poll timeout cannot be zeroPrarit Bhargava
commit 79040cad3f8235937e229f1b9401ba36dd5ad69b upstream. If you do echo 0 > /sys/module/edac_core/parameters/edac_mc_poll_msec the following stack trace is output because the edac module is not designed to poll with a timeout of zero. WARNING: CPU: 12 PID: 0 at lib/list_debug.c:33 __list_add+0xac/0xc0() list_add corruption. prev->next should be next (ffff8808291dd1b8), but was (null). (prev=ffff8808286fe3f8). Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod CPU: 12 PID: 0 Comm: swapper/12 Not tainted 3.13.0+ #1 Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013 Call Trace: <IRQ> __list_add+0xac/0xc0 __internal_add_timer+0xab/0x130 internal_add_timer+0x17/0x40 mod_timer_pinned+0xca/0x170 intel_pstate_timer_func+0x28a/0x380 call_timer_fn+0x36/0x100 run_timer_softirq+0x1ff/0x2f0 __do_softirq+0xf5/0x2e0 irq_exit+0x10d/0x120 smp_apic_timer_interrupt+0x45/0x60 apic_timer_interrupt+0x6d/0x80 <EOI> cpuidle_idle_call+0xb9/0x1f0 arch_cpu_idle+0xe/0x30 cpu_startup_entry+0x9e/0x240 start_secondary+0x1e4/0x290 kernel BUG at kernel/timer.c:1084! invalid opcode: 0000 [#1] SMP Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod CPU: 12 PID: 0 Comm: swapper/12 Tainted: G W 3.13.0+ #1 Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013 Call Trace: <IRQ> run_timer_softirq+0x245/0x2f0 __do_softirq+0xf5/0x2e0 irq_exit+0x10d/0x120 smp_apic_timer_interrupt+0x45/0x60 apic_timer_interrupt+0x6d/0x80 <EOI> cpuidle_idle_call+0xb9/0x1f0 arch_cpu_idle+0xe/0x30 cpu_startup_entry+0x9e/0x240 start_secondary+0x1e4/0x290 RIP cascade+0x93/0xa0 WARNING: CPU: 36 PID: 1154 at kernel/workqueue.c:1461 __queue_delayed_work+0xed/0x1a0() Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod CPU: 36 PID: 1154 Comm: kworker/u481:3 Tainted: G W 3.13.0+ #1 Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013 Workqueue: edac-poller edac_mc_workq_function [edac_core] Call Trace: dump_stack+0x45/0x56 warn_slowpath_common+0x7d/0xa0 warn_slowpath_null+0x1a/0x20 __queue_delayed_work+0xed/0x1a0 queue_delayed_work_on+0x27/0x50 edac_mc_workq_function+0x72/0xa0 [edac_core] process_one_work+0x17b/0x460 worker_thread+0x11b/0x400 kthread+0xd2/0xf0 ret_from_fork+0x7c/0xb0 This patch adds a range check in the edac_mc_poll_msec code to check for 0. Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: Doug Thompson <dougthompson@xmission.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22target: Fix free-after-use regression in PR unregisterNicholas Bellinger
commit fc09149df6e20cfbb0bb86f10899607c321a31eb upstream. This patch addresses a >= v3.11 free-after-use regression in core_scsi3_emulate_pro_register() that was introduced in the following commit: commit bc118fe4c4a8cfa453491ba77c0a146a6d0e73e0 Author: Andy Grover <agrover@redhat.com> Date: Thu May 16 10:41:04 2013 -0700 target: Further refactoring of core_scsi3_emulate_pro_register() To avoid the free-after-use, save an type value before hand, and only call core_scsi3_put_pr_reg() with a valid *pr_reg. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22power: max17040: Fix NULL pointer dereference when there is no platform_dataKrzysztof Kozlowski
commit ac323d8d807060f7c95a685a9fe861e7b6300993 upstream. Fix NULL pointer dereference of "chip->pdata" if platform_data was not supplied to the driver. The driver during probe stored the pointer to the platform_data: chip->pdata = client->dev.platform_data; Later it was dereferenced in max17040_get_online() and max17040_get_status(). If platform_data was not supplied, the NULL pointer exception would happen: [ 6.626094] Unable to handle kernel of a at virtual address 00000000 [ 6.628557] pgd = c0004000 [ 6.632868] [00000000] *pgd=66262564 [ 6.634636] Unable to handle kernel paging request at virtual address e6262000 [ 6.642014] pgd = de468000 [ 6.644700] [e6262000] *pgd=00000000 [ 6.648265] Internal error: Oops: 5 [#1] PREEMPT SMP ARM [ 6.653552] Modules linked in: [ 6.656598] CPU: 0 PID: 31 Comm: kworker/0:1 Not tainted 3.10.14-02717-gc58b4b4 #505 [ 6.664334] Workqueue: events max17040_work [ 6.668488] task: dfa11b80 ti: df9f6000 task.ti: df9f6000 [ 6.673873] PC is at show_pte+0x80/0xb8 [ 6.677687] LR is at show_pte+0x3c/0xb8 [ 6.681503] pc : [<c001b7b8>] lr : [<c001b774>] psr: 600f0113 [ 6.681503] sp : df9f7d58 ip : 600f0113 fp : 00000009 [ 6.692965] r10: 00000000 r9 : 00000000 r8 : dfa11b80 [ 6.698171] r7 : df9f7ea0 r6 : e6262000 r5 : 00000000 r4 : 00000000 [ 6.704680] r3 : 00000000 r2 : e6262000 r1 : 600f0193 r0 : c05b3750 [ 6.711194] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 6.718485] Control: 10c53c7d Table: 5e46806a DAC: 00000015 [ 6.724218] Process kworker/0:1 (pid: 31, stack limit = 0xdf9f6238) [ 6.730465] Stack: (0xdf9f7d58 to 0xdf9f8000) [ 6.914325] [<c001b7b8>] (show_pte+0x80/0xb8) from [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74) [ 6.923425] [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74) from [<c001bb7c>] (do_page_fault+0x2c4/0x360) [ 6.933144] [<c001bb7c>] (do_page_fault+0x2c4/0x360) from [<c0008400>] (do_DataAbort+0x34/0x9c) [ 6.941825] [<c0008400>] (do_DataAbort+0x34/0x9c) from [<c000e5d8>] (__dabt_svc+0x38/0x60) [ 6.950058] Exception stack(0xdf9f7ea0 to 0xdf9f7ee8) [ 6.955099] 7ea0: df0c1790 00000000 00000002 00000000 df0c1794 df0c1790 df0c1790 00000042 [ 6.963271] 7ec0: df0c1794 00000001 00000000 00000009 00000000 df9f7ee8 c0306268 c0306270 [ 6.971419] 7ee0: a00f0113 ffffffff [ 6.974902] [<c000e5d8>] (__dabt_svc+0x38/0x60) from [<c0306270>] (max17040_work+0x8c/0x144) [ 6.983317] [<c0306270>] (max17040_work+0x8c/0x144) from [<c003f364>] (process_one_work+0x138/0x440) [ 6.992429] [<c003f364>] (process_one_work+0x138/0x440) from [<c003fa64>] (worker_thread+0x134/0x3b8) [ 7.001628] [<c003fa64>] (worker_thread+0x134/0x3b8) from [<c00454bc>] (kthread+0xa4/0xb0) [ 7.009875] [<c00454bc>] (kthread+0xa4/0xb0) from [<c000eb28>] (ret_from_fork+0x14/0x2c) [ 7.017943] Code: e1a03005 e2422480 e0826104 e59f002c (e7922104) [ 7.024017] ---[ end trace 73bc7006b9cc5c79 ]--- Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: c6f4a42de60b981dd210de01cd3e575835e3158e Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22i2c: mv64xxx: refactor message start to ensure proper initializationWolfram Sang
commit 79970db213344b4a4034645db5ebfc31571f3fa3 upstream. Because the offload mechanism can fall back to a standard transfer, having two seperate initialization states is unfortunate. Let's just have one state which does things consistently. This fixes a bug where some preparation was missing when the fallback happened. And it makes the code much easier to follow. To implement this, we put the check if offload is possible at the top of the offload setup function. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22md/raid5: Fix CPU hotplug callback registrationOleg Nesterov
commit 789b5e0315284463617e106baad360cb9e8db3ac upstream. Subsystems that want to register CPU hotplug callbacks, as well as perform initialization for the CPUs that are already online, often do it as shown below: get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); register_cpu_notifier(&foobar_cpu_notifier); put_online_cpus(); This is wrong, since it is prone to ABBA deadlocks involving the cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently with CPU hotplug operations). Interestingly, the raid5 code can actually prevent double initialization and hence can use the following simplified form of callback registration: register_cpu_notifier(&foobar_cpu_notifier); get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); put_online_cpus(); A hotplug operation that occurs between registering the notifier and calling get_online_cpus(), won't disrupt anything, because the code takes care to perform the memory allocations only once. So reorganize the code in raid5 this way to fix the deadlock with callback registration. Cc: linux-raid@vger.kernel.org Fixes: 36d1c6476be51101778882897b315bd928c8c7b5 Signed-off-by: Oleg Nesterov <oleg@redhat.com> [Srivatsa: Fixed the unregister_cpu_notifier() deadlock, added the free_scratch_buffer() helper to condense code further and wrote the changelog.] Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22md/raid1: restore ability for check and repair to fix read errors.NeilBrown
commit 1877db75589a895bbdc4c4c3f23558e57b521141 upstream. commit 30bc9b53878a9921b02e3b5bc4283ac1c6de102a md/raid1: fix bio handling problems in process_checks() Move the bio_reset() to a point before where BIO_UPTODATE is checked, so that check now always report that the bio is uptodate, even if it is not. This causes process_check() to sometimes treat read-errors as successful matches so the good data isn't written out. This patch preserves the flag until it is needed. Bug was introduced in 3.11, but backported to 3.10-stable (as it fixed an even worse bug). So suitable for any -stable since 3.10. Reported-and-tested-by: Michael Tokarev <mjt@tls.msk.ru> Fixed: 30bc9b53878a9921b02e3b5bc4283ac1c6de102a Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22IB/qib: Add missing serdes init sequenceMike Marciniszyn
commit 2f75e12c4457a9b3d042c0a0d748fa198dc2ffaf upstream. Research has shown that commit a77fcf895046 ("IB/qib: Use a single txselect module parameter for serdes tuning") missed a key serdes init sequence. This patch add that sequence. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22ACPI / hotplug / PCI: Relax the checking of _STA return valuesMika Westerberg
commit 7282059489868e0ed1b0d79765730c6b233a8399 upstream. The ACPI specification (ACPI 5.0A, Section 6.3.7) says: _STA may return bit 0 clear (not present) with bit 3 set (device is functional). This case is used to indicate a valid device for which no device driver should be loaded (for example, a bridge device.) Children of this device may be present and valid. OSPM should continue enumeration below a device whose _STA returns this bit combination. Evidently, some BIOSes follow that and return 0x0A from _STA, which causes problems to happen when they trigger bus check or device check notifications for those devices too. Namely, ACPIPHP thinks that they are gone and may drop them, for example, if such a notification is triggered during a resume from system suspend. To fix that, modify ACPICA to regard devies as present and functioning if _STA returns both the ACPI_STA_DEVICE_ENABLED and ACPI_STA_DEVICE_FUNCTIONING bits set for them. Reported-and-tested-by: Peter Wu <lekensteyn@gmail.com> [rjw: Subject and changelog, minor code modifications] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22Revert "usbcore: set lpm_capable field for LPM capable root hubs"Sarah Sharp
commit 140e3026a57ab7d830dab2f2c57796c222db0ea9 upstream. Commit 9df89d85b407690afa46ddfbccc80bec6869971d "usbcore: set lpm_capable field for LPM capable root hubs" was created under the assumption that all USB host controllers should have USB 3.0 Link PM enabled for all devices under the hosts. Unfortunately, that's not the case. The xHCI driver relies on knowledge of the host hardware scheduler to calculate the LPM U1/U2 timeout values, and it only sets lpm_capable to one for Intel host controllers (that have the XHCI_LPM_SUPPORT quirk set). When LPM is enabled for some Fresco Logic hosts, it causes failures with a AgeStar 3UBT USB 3.0 hard drive dock: Jan 11 13:59:03 sg-laptop kernel: usb 3-1: new SuperSpeed USB device number 2 using xhci_hcd Jan 11 13:59:03 sg-laptop kernel: usb 3-1: Set SEL for device-initiated U1 failed. Jan 11 13:59:08 sg-laptop kernel: usb 3-1: Set SEL for device-initiated U2 failed. Jan 11 13:59:08 sg-laptop kernel: usb-storage 3-1:1.0: USB Mass Storage device detected Jan 11 13:59:08 sg-laptop mtp-probe[613]: checking bus 3, device 2: "/sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb3/3-1" Jan 11 13:59:08 sg-laptop mtp-probe[613]: bus: 3, device: 2 was not an MTP device Jan 11 13:59:08 sg-laptop kernel: scsi6 : usb-storage 3-1:1.0 Jan 11 13:59:13 sg-laptop kernel: usb 3-1: Set SEL for device-initiated U1 failed. Jan 11 13:59:18 sg-laptop kernel: usb 3-1: Set SEL for device-initiated U2 failed. Jan 11 13:59:18 sg-laptop kernel: usbcore: registered new interface driver usb-storage Jan 11 13:59:40 sg-laptop kernel: usb 3-1: reset SuperSpeed USB device number 2 using xhci_hcd Jan 11 13:59:41 sg-laptop kernel: usb 3-1: device descriptor read/8, error -71 Jan 11 13:59:41 sg-laptop kernel: usb 3-1: reset SuperSpeed USB device number 2 using xhci_hcd Jan 11 13:59:46 sg-laptop kernel: usb 3-1: device descriptor read/8, error -110 Jan 11 13:59:46 sg-laptop kernel: scsi 6:0:0:0: Device offlined - not ready after error recovery Jan 11 13:59:46 sg-laptop kernel: usb 3-1: USB disconnect, device number 2 lspci for the affected host: 04:00.0 0c03: 1b73:1000 (rev 04) (prog-if 30 [XHCI]) Subsystem: 1043:1039 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 19 Region 0: Memory at dd200000 (32-bit, non-prefetchable) [size=64K] Capabilities: [50] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Address: 0000000000000000 Data: 0000 Capabilities: [80] Express (v1) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <2us, L1 <32us ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 unlimited, L1 unlimited ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Kernel driver in use: xhci_hcd Kernel modules: xhci_hcd The commit was backported to stable kernels, and will need to be reverted there as well. Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com> Reported-by: Sergey Galanov <sergey.e.galanov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22Revert "usb: xhci: Link TRB must not occur within a USB payload burst"Sarah Sharp
commit 3d4b81eda2211f32886e2978daf6f39885042fc4 upstream. This reverts commit 35773dac5f862cb1c82ea151eba3e2f6de51ec3e. It's a hack that caused regressions in the usb-storage and userspace USB drivers that use usbfs and libusb. Commit 70cabb7d992f "xhci 1.0: Limit arbitrarily-aligned scatter gather." should fix the issues seen with the ax88179_178a driver on xHCI 1.0 hosts, without causing regressions. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22Revert "xhci: Avoid infinite loop when sg urb requires too many trbs"Sarah Sharp
commit 9cf00d91708221ff2d8a11143315f7ebab8d5da8 upstream. This reverts commit d6c9ea9069af684358efedcaf2f2f687f51c58ee. We are ripping out commit 35773dac5f862cb1c82ea151eba3e2f6de51ec3e "usb: xhci: Link TRB must not occur within a USB payload burst" because it's a hack that caused regressions in the usb-storage and userspace USB drivers that use usbfs and libusb. This commit attempted to fix the issues with that patch. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22Revert "xhci: Set scatter-gather limit to avoid failed block writes."Sarah Sharp
commit 1386ff75797a187df324062fb4e929152392da88 upstream. This reverts commit f2d9b991c549f159dc9ae81f77d8206c790cbfee. We are ripping out commit 35773dac5f862cb1c82ea151eba3e2f6de51ec3e "usb: xhci: Link TRB must not occur within a USB payload burst" because it's a hack that caused regressions in the usb-storage and userspace USB drivers that use usbfs and libusb. This commit attempted to fix the issues with that patch. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22xhci 1.0: Limit arbitrarily-aligned scatter gather.Sarah Sharp
commit 247bf557273dd775505fb9240d2d152f4f20d304 upstream. xHCI 1.0 hosts have a set of requirements on how to align transfer buffers on the endpoint rings called "TD fragment" rules. When the ax88179_178a driver added support for scatter gather in 3.12, with commit 804fad45411b48233b48003e33a78f290d227c8 "USBNET: ax88179_178a: enable tso if usb host supports sg dma", it broke the device under xHCI 1.0 hosts. Under certain network loads, the device would see an unexpected short packet from the host, which would cause the device to stop sending ethernet packets, even through USB packets would still be sent. Commit 35773dac5f86 "usb: xhci: Link TRB must not occur within a USB payload burst" attempted to fix this. It was a quick hack to partially implement the TD fragment rules. However, it caused regressions in the usb-storage layer and userspace USB drivers using libusb. The patches to attempt to fix this are too far reaching into the USB core, and we really need to implement the TD fragment rules correctly in the xHCI driver, instead of continuing to wallpaper over the issues. Disable arbitrarily-aligned scatter-gather in the xHCI driver for 1.0 hosts. Only the ax88179_178a driver checks the no_sg_constraint flag, so don't set it for 1.0 hosts. This should not impact usb-storage or usbfs behavior, since they pass down max packet sized aligned sg-list entries (512 for USB 2.0 and 1024 for USB 3.0). Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Tested-by: Mark Lord <mlord@pobox.com> Cc: David Laight <David.Laight@ACULAB.COM> Cc: Bjørn Mork <bjorn@mork.no> Cc: Freddy Xin <freddy@asix.com.tw> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22USB: simple: add Dynastream ANT USB-m Stick device supportKristóf Ralovich
commit 2240c365108adbc4100a55654a5707e8e877a401 upstream. Add support for ANT USB-m Stick from Dynastream Innovations, by listing USB pid [34366.944805] usb 6-1: New USB device found, idVendor=0fcf, idProduct=1009 [34366.944817] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [34366.944824] usb 6-1: Product: ANT USB-m Stick [34366.944831] usb 6-1: Manufacturer: Dynastream Innovations Device reported (https://code.google.com/p/antpm/issues/detail?id=5) to work through: $ modprobe usbserial vendor=0x0fcf product=0x1009 Signed-off-by: Kristóf Ralovich <kristof.ralovich@gmail.com> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22usb: option: blacklist ZTE MF667 net interfaceRaymond Wanyoike
commit 3635c7e2d59f7861afa6fa5e87e2a58860ff514d upstream. Interface #5 of 19d2:1270 is a net interface which has been submitted to the qmi_wwan driver so consequently remove it from the option driver. Signed-off-by: Raymond Wanyoike <raymond.wanyoike@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22usb-storage: enable multi-LUN scanning when neededAlan Stern
commit 823d12c95c666fa7ab7dad208d735f6bc6afabdc upstream. People sometimes create their own custom-configured kernels and forget to enable CONFIG_SCSI_MULTI_LUN. This causes problems when they plug in a USB storage device (such as a card reader) with more than one LUN. Fortunately, we can tell fairly easily when a storage device claims to have more than one LUN. When that happens, this patch asks the SCSI layer to probe all the LUNs automatically, regardless of the config setting. The patch also updates the Kconfig help text for usb-storage, explaining that CONFIG_SCSI_MULTI_LUN may be necessary. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Thomas Raschbacher <lordvan@lordvan.com> CC: Matthew Dharm <mdharm-usb@one-eyed-alien.net> CC: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22usb-storage: restrict bcdDevice range for Super Top in Cypress ATACBAlan Stern
commit a9c143c82608bee2a36410caa56d82cd86bdc7fa upstream. The Cypress ATACB unusual-devs entry for the Super Top SATA bridge causes problems. Although it was originally reported only for bcdDevice = 0x160, its range was much larger. This resulted in a bug report for bcdDevice 0x220, so the range was capped at 0x219. Now Milan reports errors with bcdDevice 0x150. Therefore this patch restricts the range to just 0x160. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-and-tested-by: Milan Svoboda <milan.svoboda@centrum.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22usb-storage: add unusual-devs entry for BlackBerry 9000Alan Stern
commit c5637e5119c43452a00e27c274356b072263ecbb upstream. This patch adds an unusual-devs entry for the BlackBerry 9000. This fixes Bugzilla #22442. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Moritz Moeller-Herrmann <moritz-kernel@moeller-herrmann.de> Tested-by: Moritz Moeller-Herrmann <moritz-kernel@moeller-herrmann.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22USB: ftdi_sio: add Tagsys RFID Reader IDsUlrich Hahn
commit 76f24e3f39a1a94bab0d54e98899d64abcd9f69c upstream. Adding two more IDs to the ftdi_sio usb serial driver. It now connects Tagsys RFID readers. There might be more IDs out there for other Tagsys models. Signed-off-by: Ulrich Hahn <uhahn@eanco.de> Cc: Johan Hovold <johan@hovold.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22usb: ftdi_sio: add Mindstorms EV3 console adapterBjørn Mork
commit 67847baee056892dc35efb9c3fd05ae7f075588c upstream. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22Drivers: hv: vmbus: Don't timeout during the initial connection with hostK. Y. Srinivasan
commit 269f979467cf49f2ea8132316c1f00f8c9678f7c upstream. When the guest attempts to connect with the host when there may already be a connection with the host (as would be the case during the kdump/kexec path), it is difficult to guarantee timely response from the host. Starting with WS2012 R2, the host supports this ability to re-connect with the host (explicitly to support kexec). Prior to responding to the guest, the host needs to ensure that device states based on the previous connection to the host have been properly torn down. This may introduce unbounded delays. To deal with this issue, don't do a timed wait during the initial connect with the host. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22VME: Correct read/write alignment algorithmMartyn Welch
commit f0342e66b397947ed8c3eef8c37b5ca2d5b1bb50 upstream. In order to ensure the correct width cycles on the VME bus, the VME bridge drivers implement an algorithm to utilise the largest possible width reads and writes whilst maintaining natural alignment constraints. The algorithm currently looks at the start address rather than the current read/write address when determining whether a 16-bit width cycle is required to get to 32-bit alignment. This results in incorrect alignment, Reported-by: Jim Strouth <james.strouth@ge.com> Tested-by: Jim Strouth <james.strouth@ge.com> Signed-off-by: Martyn Welch <martyn.welch@ge.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22mei: don't unset read cb ptr on resetAlexander Usyskin
commit 5cb906c7035f03a3a44fecece9d3ff8fcc75d6e0 upstream. Don't set read callback to NULL during reset as this leads to memory leak of both cb and its buffer. The memory is correctly freed during mei_release. The memory leak is detectable by kmemleak if application has open read call while system is going through suspend/resume. unreferenced object 0xecead780 (size 64): comm "AsyncTask #1", pid 1018, jiffies 4294949621 (age 152.440s) hex dump (first 32 bytes): 00 01 10 00 00 02 20 00 00 bf 30 f1 00 00 00 00 ...... ...0..... 00 00 00 00 00 00 00 00 36 01 00 00 00 70 da e2 ........6....p.. backtrace: [<c1a60aec>] kmemleak_alloc+0x3c/0xa0 [<c131ed56>] kmem_cache_alloc_trace+0xc6/0x190 [<c16243c9>] mei_io_cb_init+0x29/0x50 [<c1625722>] mei_cl_read_start+0x102/0x360 [<c16268f3>] mei_read+0x103/0x4e0 [<c1324b09>] vfs_read+0x89/0x160 [<c1324d5f>] SyS_read+0x4f/0x80 [<c1a7b318>] syscall_call+0x7/0xb [<ffffffff>] 0xffffffff unreferenced object 0xe2da7000 (size 512): comm "AsyncTask #1", pid 1018, jiffies 4294949621 (age 152.440s) hex dump (first 32 bytes): 00 6c da e2 7c 00 00 00 00 00 00 00 c0 eb 0c 59 .l..|..........Y 1b 00 00 00 01 00 00 00 02 10 00 00 01 00 00 00 ................ backtrace: [<c1a60aec>] kmemleak_alloc+0x3c/0xa0 [<c131f127>] __kmalloc+0xe7/0x1d0 [<c162447e>] mei_io_cb_alloc_resp_buf+0x2e/0x60 [<c162574c>] mei_cl_read_start+0x12c/0x360 [<c16268f3>] mei_read+0x103/0x4e0 [<c1324b09>] vfs_read+0x89/0x160 [<c1324d5f>] SyS_read+0x4f/0x80 [<c1a7b318>] syscall_call+0x7/0xb [<ffffffff>] 0xffffffff Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22mei: clear write cb from waiting list on resetAlexander Usyskin
commit 30c54df7cb9b15b222529a028390b9c9582dd65e upstream. Clear write callbacks sitting in write_waiting list on reset. Otherwise these callbacks are left dangling and cause memory leak. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22iio: ak8975: Fix calculation formula for convert micro tesla to gauss unitBeomho Seo
commit bef44abccb2677e8d16e50b75316d4fd1061be81 upstream. This effects the reported scale of the raw values, and thus userspace applications that use this value. One micro tesla equal 0.01 gauss. So I have fixed calculation formula And add RAW_TO_GAUSS macro. ASA is in the range of 0 to 255. If multiply 0.003, calculation result(in_magn_[*]_scale) is always 0. So multiply 3000 and return and IIO_VAL_INT_PLUS_MICRO. As a result, read_raw call back function return accurate scale value. Signed-off-by: Beomho Seo <beomho.seo@samsung.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22iio: adis16400: Set timestamp as the last element in chan_specMarcus Folkesson
commit c76782d151dab7ecfdcdf9a01561c2d61d9b490f upstream. This is necessary since timestamp is calculated as the last element in iio_compute_scan_bytes(). Without this fix any userspace code reading the layout of the buffer via sysfs will incorrectly interpret the data leading some nasty corruption. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22iio: max1363: Use devm_regulator_get_optional for optional regulatorGuenter Roeck
commit 55b40d37311807a6bb2acdae0df904f54a0da3ae upstream. In kernel version 3.13, devm_regulator_get() may return no error if a regulator is undeclared. regulator_get_voltage() will return -EINVAL if this happens. This causes the driver to fail loading if the vref regulator is not declared. Since vref is optional, call devm_regulator_get_optional instead. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22staging:iio:ad799x fix error_free_irq which was freeing an irq that may not ↵Hartmut Knaack
have been requested commit 38408d056188be29a6c4e17f3703c796551bb330 upstream. Only free an IRQ in error_free_irq, if it has been requested previously. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22staging: comedi: adv_pci1710: fix analog output readback valueH Hartley Sweeten
commit 1e85c1ea1ff2a60659e790ef8ec76c7339445841 upstream. The last value written to a analog output channel is cached in the private data of this driver for readback. Currently, the wrong value is cached in the (*insn_write) functions. The current code stores the data[n] value for readback afer the loop has written all the values. At this time 'n' points past the end of the data array. Fix the functions by using a local variable to hold the data being written to the analog output channel. This variable is then used after the loop is complete to store the readback value. The current value is retrieved before the loop in case no values are actually written.. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22staging: r8188eu: Fix typo in USB_DEVICE listLarry Finger
commit 08951f10ae146d0c4114ac508310ad316b6f8798 upstream. There is a typo in the device list that interchanges the vendor and product codes for one of the entries. This exchange was determined by noticing that the vendor code is 0x07b8 for Abocom at http://www.linux-usb.org/usb.ids. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22staging: lustre: fix quotactl permission denied (LU-4530)Cédric Dufour
commit 8b9e418c013e8b671fc10108ab14243f0657bffd upstream. The changes introduced in commit 4b1a25f06b30b203 ("fix build when CONFIG_UIDGID_STRICT_TYPE_CHECKS is on") got the UID check the wrong way around, leading to "Permission denied" when a regular user attempts to retrieve his quota (lfs quota -u ...) but allowing him to retrieve other users quota. Full details at: https://jira.hpdd.intel.com/browse/LU-4530 Cc: Peng Tao <tao.peng@emc.com> Signed-off-by: Cédric Dufour <cedric.dufour@idiap.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22usb: qcserial: add Netgear Aircard 340UBjørn Mork
commit f948dcf9e9973c05d957bc65b3185682f45feda3 upstream. This device was mentioned in an OpenWRT forum. Seems to have a "standard" Sierra Wireless ifnumber to function layout: 0: qcdm 2: nmea 3: modem 8: qmi 9: storage Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22vt: Fix secure clear screenPetr Písař
commit 0930b0950a8996aa88b0d2ba4bb2bab27cc36bc7 upstream. \E[3J console code (secure clear screen) needs to update_screen(vc) in order to write-through blanks into off-screen video memory. This has been removed accidentally in 3.6 by: commit 81732c3b2fede049a692e58a7ceabb6d18ffb18c Author: Jean-François Moine <moinejf@free.fr> Date: Thu Sep 6 19:24:13 2012 +0200 tty vt: Fix line garbage in virtual console on command line edition Signed-off-by: Petr Písař <petr.pisar@atlas.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22drm/i915: Pair va_copy with va_end in i915_error_vprintfMika Kuoppala
commit 1d2cb9a54abc6e1d239f28f07661366d5662a94a upstream. Each invocation of va_copy() must be matched by a corresponding invocation of va_end() in the same function. This regression has been introduced in commit e29bb4ebbf000ff9ac081d29784a3331618f012e Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Fri Sep 20 10:20:59 2013 +0100 drm/i915: Use a temporary va_list for two-pass string handling Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22drm/radeon: fix UVD IRQ support on SIChristian König
commit b927e1c20462c1ad9caf4c4fa3a30e838a2d4037 upstream. Otherwise decoding isn't really useable. bug: https://bugs.freedesktop.org/show_bug.cgi?id=71448 Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22drm/radeon: fix UVD IRQ support on 7xxAlex Deucher
commit 858a41c853cef2cb01de34dae334c19c1c15b237 upstream. Otherwise decoding isn't really useable. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>