From 24669f75a3231fa37444977c92d1f4838bec1233 Mon Sep 17 00:00:00 2001 From: Jes Sorensen Date: Mon, 16 Jan 2006 10:31:18 -0500 Subject: [SCSI] SCSI core kmalloc2kzalloc Change the core SCSI code to use kzalloc rather than kmalloc+memset where possible. Signed-off-by: Jes Sorensen Signed-off-by: James Bottomley diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 5881079..ef57f25 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -306,10 +306,9 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) dump_stack(); } - shost = kmalloc(sizeof(struct Scsi_Host) + privsize, gfp_mask); + shost = kzalloc(sizeof(struct Scsi_Host) + privsize, gfp_mask); if (!shost) return NULL; - memset(shost, 0, sizeof(struct Scsi_Host) + privsize); spin_lock_init(&shost->default_lock); scsi_assign_lock(shost, &shost->default_lock); diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index c551bb8..11b27ba 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -136,9 +136,8 @@ struct scsi_request *scsi_allocate_request(struct scsi_device *sdev, const int size = offset + sizeof(struct request); struct scsi_request *sreq; - sreq = kmalloc(size, gfp_mask); + sreq = kzalloc(size, gfp_mask); if (likely(sreq != NULL)) { - memset(sreq, 0, size); sreq->sr_request = (struct request *)(((char *)sreq) + offset); sreq->sr_device = sdev; sreq->sr_host = sdev->host; diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 0e529f8..5a5d2af 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1061,13 +1061,12 @@ static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) } } if (NULL == open_devip) { /* try and make a new one */ - open_devip = kmalloc(sizeof(*open_devip),GFP_KERNEL); + open_devip = kzalloc(sizeof(*open_devip),GFP_KERNEL); if (NULL == open_devip) { printk(KERN_ERR "%s: out of memory at line %d\n", __FUNCTION__, __LINE__); return NULL; } - memset(open_devip, 0, sizeof(*open_devip)); open_devip->sdbg_host = sdbg_host; list_add_tail(&open_devip->dev_list, &sdbg_host->dev_info_list); @@ -1814,7 +1813,7 @@ static int sdebug_add_adapter(void) struct sdebug_dev_info *sdbg_devinfo; struct list_head *lh, *lh_sf; - sdbg_host = kmalloc(sizeof(*sdbg_host),GFP_KERNEL); + sdbg_host = kzalloc(sizeof(*sdbg_host), GFP_KERNEL); if (NULL == sdbg_host) { printk(KERN_ERR "%s: out of memory at line %d\n", @@ -1822,19 +1821,17 @@ static int sdebug_add_adapter(void) return -ENOMEM; } - memset(sdbg_host, 0, sizeof(*sdbg_host)); INIT_LIST_HEAD(&sdbg_host->dev_info_list); devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; for (k = 0; k < devs_per_host; k++) { - sdbg_devinfo = kmalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); + sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo), GFP_KERNEL); if (NULL == sdbg_devinfo) { printk(KERN_ERR "%s: out of memory at line %d\n", __FUNCTION__, __LINE__); error = -ENOMEM; goto clean; } - memset(sdbg_devinfo, 0, sizeof(*sdbg_devinfo)); sdbg_devinfo->sdbg_host = sdbg_host; list_add_tail(&sdbg_devinfo->dev_list, &sdbg_host->dev_info_list); diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 0bba7d8..36e9300 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -241,10 +241,9 @@ int scsi_ioctl_send_command(struct scsi_device *sdev, buf_needed = (buf_needed + 511) & ~511; if (buf_needed > MAX_BUF) buf_needed = MAX_BUF; - buf = kmalloc(buf_needed, gfp_mask); + buf = kzalloc(buf_needed, gfp_mask); if (!buf) return -ENOMEM; - memset(buf, 0, buf_needed); if (inlen == 0) { data_direction = DMA_FROM_DEVICE; } else if (outlen == 0 ) { diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 4362dcd..1fe4fd8 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -286,13 +286,12 @@ int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd, int result; if (sshdr) { - sense = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); + sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); if (!sense) return DRIVER_ERROR << 24; - memset(sense, 0, SCSI_SENSE_BUFFERSIZE); } result = scsi_execute(sdev, cmd, data_direction, buffer, bufflen, - sense, timeout, retries, 0); + sense, timeout, retries, 0); if (sshdr) scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, sshdr); diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 5acb83c..74863da 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -205,12 +205,11 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, int display_failure_msg = 1, ret; struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); - sdev = kmalloc(sizeof(*sdev) + shost->transportt->device_size, + sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size, GFP_ATOMIC); if (!sdev) goto out; - memset(sdev, 0, sizeof(*sdev)); sdev->vendor = scsi_null_device_strs; sdev->model = scsi_null_device_strs; sdev->rev = scsi_null_device_strs; @@ -334,12 +333,11 @@ static struct scsi_target *scsi_alloc_target(struct device *parent, struct scsi_target *starget; struct scsi_target *found_target; - starget = kmalloc(size, GFP_KERNEL); + starget = kzalloc(size, GFP_KERNEL); if (!starget) { printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__); return NULL; } - memset(starget, 0, size); dev = &starget->dev; device_initialize(dev); starget->reap_ref = 1; diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index f2c9acf..56012b2 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -1115,15 +1115,13 @@ static int fc_user_scan(struct Scsi_Host *shost, uint channel, struct scsi_transport_template * fc_attach_transport(struct fc_function_template *ft) { - struct fc_internal *i = kmalloc(sizeof(struct fc_internal), - GFP_KERNEL); int count; + struct fc_internal *i = kzalloc(sizeof(struct fc_internal), + GFP_KERNEL); if (unlikely(!i)) return NULL; - memset(i, 0, sizeof(struct fc_internal)); - i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; i->t.target_attrs.ac.class = &fc_transport_class.class; i->t.target_attrs.ac.match = fc_target_match; @@ -1305,12 +1303,11 @@ fc_rport_create(struct Scsi_Host *shost, int channel, size_t size; size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); - rport = kmalloc(size, GFP_KERNEL); + rport = kzalloc(size, GFP_KERNEL); if (unlikely(!rport)) { printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__); return NULL; } - memset(rport, 0, size); rport->maxframe_size = -1; rport->supported_classes = FC_COS_UNSPECIFIED; diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index 71e54a6..2730d50 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -1117,10 +1117,9 @@ iscsi_register_transport(struct iscsi_transport *tt) if (priv) return NULL; - priv = kmalloc(sizeof(*priv), GFP_KERNEL); + priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return NULL; - memset(priv, 0, sizeof(*priv)); INIT_LIST_HEAD(&priv->list); priv->iscsi_transport = tt; diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c index 210dab5..2055429 100644 --- a/drivers/scsi/scsi_transport_sas.c +++ b/drivers/scsi/scsi_transport_sas.c @@ -391,10 +391,9 @@ struct sas_phy *sas_phy_alloc(struct device *parent, int number) struct Scsi_Host *shost = dev_to_shost(parent); struct sas_phy *phy; - phy = kmalloc(sizeof(*phy), GFP_KERNEL); + phy = kzalloc(sizeof(*phy), GFP_KERNEL); if (!phy) return NULL; - memset(phy, 0, sizeof(*phy)); get_device(parent); @@ -585,12 +584,11 @@ struct sas_rphy *sas_rphy_alloc(struct sas_phy *parent) struct Scsi_Host *shost = dev_to_shost(&parent->dev); struct sas_rphy *rphy; - rphy = kmalloc(sizeof(*rphy), GFP_KERNEL); + rphy = kzalloc(sizeof(*rphy), GFP_KERNEL); if (!rphy) { put_device(&parent->dev); return NULL; } - memset(rphy, 0, sizeof(*rphy)); device_initialize(&rphy->dev); rphy->dev.parent = get_device(&parent->dev); @@ -793,10 +791,9 @@ sas_attach_transport(struct sas_function_template *ft) struct sas_internal *i; int count; - i = kmalloc(sizeof(struct sas_internal), GFP_KERNEL); + i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); if (!i) return NULL; - memset(i, 0, sizeof(struct sas_internal)); i->t.user_scan = sas_user_scan; diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index 7ee95eb..a1e521b 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -900,13 +900,11 @@ spi_dv_device(struct scsi_device *sdev) if (unlikely(scsi_device_get(sdev))) return; - buffer = kmalloc(len, GFP_KERNEL); + buffer = kzalloc(len, GFP_KERNEL); if (unlikely(!buffer)) goto out_put; - memset(buffer, 0, len); - /* We need to verify that the actual device will quiesce; the * later target quiesce is just a nice to have */ if (unlikely(scsi_device_quiesce(sdev))) @@ -1265,15 +1263,13 @@ static DECLARE_ANON_TRANSPORT_CLASS(spi_device_class, struct scsi_transport_template * spi_attach_transport(struct spi_function_template *ft) { - struct spi_internal *i = kmalloc(sizeof(struct spi_internal), - GFP_KERNEL); int count = 0; + struct spi_internal *i = kzalloc(sizeof(struct spi_internal), + GFP_KERNEL); + if (unlikely(!i)) return NULL; - memset(i, 0, sizeof(struct spi_internal)); - - i->t.target_attrs.ac.class = &spi_transport_class.class; i->t.target_attrs.ac.attrs = &i->attrs[0]; i->t.target_attrs.ac.match = spi_target_match; diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 9d98723..8ba2d98 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1517,11 +1517,10 @@ static int sd_probe(struct device *dev) "sd_attach\n")); error = -ENOMEM; - sdkp = kmalloc(sizeof(*sdkp), GFP_KERNEL); + sdkp = kzalloc(sizeof(*sdkp), GFP_KERNEL); if (!sdkp) goto out; - memset (sdkp, 0, sizeof(*sdkp)); kref_init(&sdkp->kref); gd = alloc_disk(16); diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 2a54753..ecf2f60 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1361,7 +1361,7 @@ static int sg_alloc(struct gendisk *disk, struct scsi_device *scsidp) void *old_sg_dev_arr = NULL; int k, error; - sdp = kmalloc(sizeof(Sg_device), GFP_KERNEL); + sdp = kzalloc(sizeof(Sg_device), GFP_KERNEL); if (!sdp) { printk(KERN_WARNING "kmalloc Sg_device failure\n"); return -ENOMEM; @@ -1373,12 +1373,11 @@ static int sg_alloc(struct gendisk *disk, struct scsi_device *scsidp) int tmp_dev_max = sg_nr_dev + SG_DEV_ARR_LUMP; write_unlock_irqrestore(&sg_dev_arr_lock, iflags); - tmp_da = kmalloc(tmp_dev_max * sizeof(Sg_device *), GFP_KERNEL); + tmp_da = kzalloc(tmp_dev_max * sizeof(Sg_device *), GFP_KERNEL); if (unlikely(!tmp_da)) goto expand_failed; write_lock_irqsave(&sg_dev_arr_lock, iflags); - memset(tmp_da, 0, tmp_dev_max * sizeof(Sg_device *)); memcpy(tmp_da, sg_dev_arr, sg_dev_max * sizeof(Sg_device *)); old_sg_dev_arr = sg_dev_arr; sg_dev_arr = tmp_da; @@ -1391,7 +1390,6 @@ static int sg_alloc(struct gendisk *disk, struct scsi_device *scsidp) if (unlikely(k >= SG_MAX_DEVS)) goto overflow; - memset(sdp, 0, sizeof(*sdp)); SCSI_LOG_TIMEOUT(3, printk("sg_alloc: dev=%d \n", k)); sprintf(disk->disk_name, "sg%d", k); disk->first_minor = k; diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 997f8e3..d8d12a1 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -525,10 +525,9 @@ static int sr_probe(struct device *dev) goto fail; error = -ENOMEM; - cd = kmalloc(sizeof(*cd), GFP_KERNEL); + cd = kzalloc(sizeof(*cd), GFP_KERNEL); if (!cd) goto fail; - memset(cd, 0, sizeof(*cd)); kref_init(&cd->kref); diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index 5d02ff4..03fbc4b 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -44,11 +44,10 @@ static int sr_read_tochdr(struct cdrom_device_info *cdi, int result; unsigned char *buffer; - buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); + buffer = kzalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); if (!buffer) return -ENOMEM; - memset(&cgc, 0, sizeof(struct packet_command)); cgc.timeout = IOCTL_TIMEOUT; cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; cgc.cmd[8] = 12; /* LSB of length */ @@ -74,11 +73,10 @@ static int sr_read_tocentry(struct cdrom_device_info *cdi, int result; unsigned char *buffer; - buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); + buffer = kzalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); if (!buffer) return -ENOMEM; - memset(&cgc, 0, sizeof(struct packet_command)); cgc.timeout = IOCTL_TIMEOUT; cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0; diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index 7f96f33..f0606da 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -3590,12 +3590,11 @@ static struct st_buffer * i = sizeof(struct st_buffer) + (max_sg - 1) * sizeof(struct scatterlist) + max_sg * sizeof(struct st_buf_fragment); - tb = kmalloc(i, priority); + tb = kzalloc(i, priority); if (!tb) { printk(KERN_NOTICE "st: Can't allocate new tape buffer.\n"); return NULL; } - memset(tb, 0, i); tb->frp_segs = tb->orig_frp_segs = 0; tb->use_sg = max_sg; tb->frp = (struct st_buf_fragment *)(&(tb->sg[0]) + max_sg); @@ -3924,14 +3923,13 @@ static int st_probe(struct device *dev) goto out_put_disk; } - tmp_da = kmalloc(tmp_dev_max * sizeof(struct scsi_tape *), GFP_ATOMIC); + tmp_da = kzalloc(tmp_dev_max * sizeof(struct scsi_tape *), GFP_ATOMIC); if (tmp_da == NULL) { write_unlock(&st_dev_arr_lock); printk(KERN_ERR "st: Can't extend device array.\n"); goto out_put_disk; } - memset(tmp_da, 0, tmp_dev_max * sizeof(struct scsi_tape *)); if (scsi_tapes != NULL) { memcpy(tmp_da, scsi_tapes, st_dev_max * sizeof(struct scsi_tape *)); @@ -3948,13 +3946,12 @@ static int st_probe(struct device *dev) if (i >= st_dev_max) panic("scsi_devices corrupt (st)"); - tpnt = kmalloc(sizeof(struct scsi_tape), GFP_ATOMIC); + tpnt = kzalloc(sizeof(struct scsi_tape), GFP_ATOMIC); if (tpnt == NULL) { write_unlock(&st_dev_arr_lock); printk(KERN_ERR "st: Can't allocate device descriptor.\n"); goto out_put_disk; } - memset(tpnt, 0, sizeof(struct scsi_tape)); kref_init(&tpnt->kref); tpnt->disk = disk; sprintf(disk->disk_name, "st%d", i); -- cgit v0.10.2