[SCSI] SCSI core kmalloc2kzalloc

Change the core SCSI code to use kzalloc rather than kmalloc+memset
where possible.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 5881079..ef57f25 100644 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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);