some kmalloc/memset ->kzalloc (tree wide)

Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation:

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x =
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);

@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)

[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <bryan.wu@analog.com>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Acked-by: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Greg KH <greg@kroah.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

136 files changed, 157 insertions, 330 deletions

diff --git a/Documentation/connector/cn_test.c b/Documentation/connector/cn_test.c
index 3e73231695b3..be7af146dd30 100644
--- a/Documentation/connector/cn_test.c
+++ b/Documentation/connector/cn_test.c
@@ -124,9 +124,8 @@ static void cn_test_timer_func(unsigned long __data)
         struct cn_msg *m;
         char data[32];
 
-        m = kmalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
+        m = kzalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
         if (m) {
-                memset(m, 0, sizeof(*m) + sizeof(data));
 
                 memcpy(&m->id, &cn_test_id, sizeof(m->id));
                 m->seq = cn_test_timer_counter;
diff --git a/Documentation/filesystems/configfs/configfs_example.c b/Documentation/filesystems/configfs/configfs_example.c
index e56d49264b39..25151fd5c2c6 100644
--- a/Documentation/filesystems/configfs/configfs_example.c
+++ b/Documentation/filesystems/configfs/configfs_example.c
@@ -277,11 +277,10 @@ static struct config_item *simple_children_make_item(struct config_group *group,
 {
         struct simple_child *simple_child;
 
-        simple_child = kmalloc(sizeof(struct simple_child), GFP_KERNEL);
+        simple_child = kzalloc(sizeof(struct simple_child), GFP_KERNEL);
         if (!simple_child)
                 return NULL;
 
-        memset(simple_child, 0, sizeof(struct simple_child));
 
         config_item_init_type_name(&simple_child->item, name,
                                    &simple_child_type);
@@ -364,12 +363,11 @@ static struct config_group *group_children_make_group(struct config_group *group
 {
         struct simple_children *simple_children;
 
-        simple_children = kmalloc(sizeof(struct simple_children),
+        simple_children = kzalloc(sizeof(struct simple_children),
                                   GFP_KERNEL);
         if (!simple_children)
                 return NULL;
 
-        memset(simple_children, 0, sizeof(struct simple_children));
 
         config_group_init_type_name(&simple_children->group, name,
                                     &simple_children_type);
diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c
index bd03dc94c72b..026ba9af6d6a 100644
--- a/arch/alpha/kernel/module.c
+++ b/arch/alpha/kernel/module.c
@@ -119,8 +119,7 @@ module_frob_arch_sections(Elf64_Ehdr *hdr, Elf64_Shdr *sechdrs,
         }
 
         nsyms = symtab->sh_size / sizeof(Elf64_Sym);
-        chains = kmalloc(nsyms * sizeof(struct got_entry), GFP_KERNEL);
-        memset(chains, 0, nsyms * sizeof(struct got_entry));
+        chains = kcalloc(nsyms, sizeof(struct got_entry), GFP_KERNEL);
 
         got->sh_size = 0;
         got->sh_addralign = 8;
diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index 9d63d7f260ca..99d94cb1bafd 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -1002,11 +1002,10 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
         if (nr > 1)
                 return 0;
 
-        res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL);
+        res = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
         if (!res)
                 panic("PCI: unable to alloc resources");
 
-        memset(res, 0, sizeof(struct resource) * 2);
 
         /* 'nr' assumptions:
          * ATUX is always 0
diff --git a/arch/blackfin/mm/blackfin_sram.c b/arch/blackfin/mm/blackfin_sram.c
index 16c6169ed01b..b99ea883cd22 100644
--- a/arch/blackfin/mm/blackfin_sram.c
+++ b/arch/blackfin/mm/blackfin_sram.c
@@ -521,10 +521,9 @@ void *sram_alloc_with_lsl(size_t size, unsigned long flags)
         struct sram_list_struct *lsl = NULL;
         struct mm_struct *mm = current->mm;
 
-        lsl = kmalloc(sizeof(struct sram_list_struct), GFP_KERNEL);
+        lsl = kzalloc(sizeof(struct sram_list_struct), GFP_KERNEL);
         if (!lsl)
                 return NULL;
-        memset(lsl, 0, sizeof(*lsl));
 
         if (flags & L1_INST_SRAM)
                 addr = l1_inst_sram_alloc(size);
diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c
index 832fc63504d4..66f9500fbc02 100644
--- a/arch/cris/arch-v32/drivers/pci/dma.c
+++ b/arch/cris/arch-v32/drivers/pci/dma.c
@@ -91,14 +91,12 @@ int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
         if (!mem_base)
                 goto out;
 
-        dev->dma_mem = kmalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL);
+        dev->dma_mem = kzalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL);
         if (!dev->dma_mem)
                 goto out;
-        memset(dev->dma_mem, 0, sizeof(struct dma_coherent_mem));
-        dev->dma_mem->bitmap = kmalloc(bitmap_size, GFP_KERNEL);
+        dev->dma_mem->bitmap = kzalloc(bitmap_size, GFP_KERNEL);
         if (!dev->dma_mem->bitmap)
                 goto free1_out;
-        memset(dev->dma_mem->bitmap, 0, bitmap_size);
 
         dev->dma_mem->virt_base = mem_base;
         dev->dma_mem->device_base = device_addr;
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index c492cee90e0f..6444eaa30a2f 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -248,7 +248,7 @@ static void parse_system_parameter_string(struct seq_file *m)
         } else {
                 int splpar_strlen;
                 int idx, w_idx;
-                char *workbuffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
+                char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
                 if (!workbuffer) {
                         printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
                                __FILE__, __FUNCTION__, __LINE__);
@@ -261,7 +261,6 @@ static void parse_system_parameter_string(struct seq_file *m)
                 splpar_strlen = local_buffer[0] * 256 + local_buffer[1];
                 local_buffer += 2;      /* step over strlen value */
 
-                memset(workbuffer, 0, SPLPAR_MAXLENGTH);
                 w_idx = 0;
                 idx = 0;
                 while ((*local_buffer) && (idx < splpar_strlen)) {
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index 9536ed7f247c..8ded4e7dc87e 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -222,10 +222,9 @@ struct of_device* of_platform_device_create(struct device_node *np,
 {
         struct of_device *dev;
 
-        dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
         if (!dev)
                 return NULL;
-        memset(dev, 0, sizeof(*dev));
 
         dev->node = of_node_get(np);
         dev->dma_mask = 0xffffffffUL;
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index a26ba07955fe..71bdf88884b2 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -436,11 +436,10 @@ int sg_scsi_ioctl(struct file *file, struct request_queue *q,
 
         bytes = max(in_len, out_len);
         if (bytes) {
-                buffer = kmalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
+                buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
                 if (!buffer)
                         return -ENOMEM;
 
-                memset(buffer, 0, bytes);
         }
 
         rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT);
diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c
index 54509eb3391b..949ae93499e5 100644
--- a/drivers/block/sx8.c
+++ b/drivers/block/sx8.c
@@ -1608,7 +1608,7 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         }
 #endif
 
-        host = kmalloc(sizeof(*host), GFP_KERNEL);
+        host = kzalloc(sizeof(*host), GFP_KERNEL);
         if (!host) {
                 printk(KERN_ERR DRV_NAME "(%s): memory alloc failure\n",
                        pci_name(pdev));
@@ -1616,7 +1616,6 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                 goto err_out_regions;
         }
 
-        memset(host, 0, sizeof(*host));
         host->pdev = pdev;
         host->flags = pci_dac ? FL_DAC : 0;
         spin_lock_init(&host->lock);
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 7b02bf1289a2..3d468f502d2d 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -1721,12 +1721,11 @@ static int get_async_struct(int line, struct async_struct **ret_info)
                 *ret_info = sstate->info;
                 return 0;
         }
-        info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
+        info = kzalloc(sizeof(struct async_struct), GFP_KERNEL);
         if (!info) {
                 sstate->count--;
                 return -ENOMEM;
         }
-        memset(info, 0, sizeof(struct async_struct));
 #ifdef DECLARE_WAITQUEUE
         init_waitqueue_head(&info->open_wait);
         init_waitqueue_head(&info->close_wait);
diff --git a/drivers/char/drm/via_dmablit.c b/drivers/char/drm/via_dmablit.c
index fdb8609dd76f..832de1d9ba7e 100644
--- a/drivers/char/drm/via_dmablit.c
+++ b/drivers/char/drm/via_dmablit.c
@@ -273,10 +273,9 @@ via_alloc_desc_pages(drm_via_sg_info_t *vsg)
         vsg->num_desc_pages = (vsg->num_desc + vsg->descriptors_per_page - 1) / 
                 vsg->descriptors_per_page;
 
-        if (NULL ==  (vsg->desc_pages = kmalloc(sizeof(void *) * vsg->num_desc_pages, GFP_KERNEL))) 
+        if (NULL ==  (vsg->desc_pages = kcalloc(vsg->num_desc_pages, sizeof(void *), GFP_KERNEL)))
                 return DRM_ERR(ENOMEM);
         
-        memset(vsg->desc_pages, 0, sizeof(void *) * vsg->num_desc_pages);
         vsg->state = dr_via_desc_pages_alloc;
         for (i=0; i<vsg->num_desc_pages; ++i) {
                 if (NULL == (vsg->desc_pages[i] = 
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index 74cd5118af57..2e7ae42a5503 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -2459,7 +2459,7 @@ static int __init espserial_init(void)
                 return 1;
         }
 
-        info = kmalloc(sizeof(struct esp_struct), GFP_KERNEL);
+        info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
 
         if (!info)
         {
@@ -2469,7 +2469,6 @@ static int __init espserial_init(void)
                 return 1;
         }
 
-        memset((void *)info, 0, sizeof(struct esp_struct));
         spin_lock_init(&info->lock);
         /* rx_trigger, tx_trigger are needed by autoconfig */
         info->config.rx_trigger = rx_trigger;
@@ -2527,7 +2526,7 @@ static int __init espserial_init(void)
                 if (!dma)
                         info->stat_flags |= ESP_STAT_NEVER_DMA;
 
-                info = kmalloc(sizeof(struct esp_struct), GFP_KERNEL);
+                info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
                 if (!info)
                 {
                         printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n"); 
@@ -2536,7 +2535,6 @@ static int __init espserial_init(void)
                         return 0;
                 }
 
-                memset((void *)info, 0, sizeof(struct esp_struct));
                 /* rx_trigger, tx_trigger are needed by autoconfig */
                 info->config.rx_trigger = rx_trigger;
                 info->config.tx_trigger = tx_trigger;
diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 207f7343ba60..17f96e04266f 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -784,12 +784,10 @@ static int __devinit hvcs_probe(
                 return -EFAULT;
         }
 
-        hvcsd = kmalloc(sizeof(*hvcsd), GFP_KERNEL);
+        hvcsd = kzalloc(sizeof(*hvcsd), GFP_KERNEL);
         if (!hvcsd)
                 return -ENODEV;
 
-        /* hvcsd->tty is zeroed out with the memset */
-        memset(hvcsd, 0x00, sizeof(*hvcsd));
 
         spin_lock_init(&hvcsd->lock);
         /* Automatically incs the refcount the first time */
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index b5df7e61aeb2..6a01dd9e43f8 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2639,10 +2639,9 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
                         return -ENODEV;
         }
 
-        intf = kmalloc(sizeof(*intf), GFP_KERNEL);
+        intf = kzalloc(sizeof(*intf), GFP_KERNEL);
         if (!intf)
                 return -ENOMEM;
-        memset(intf, 0, sizeof(*intf));
 
         intf->ipmi_version_major = ipmi_version_major(device_id);
         intf->ipmi_version_minor = ipmi_version_minor(device_id);
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 13808f6083a0..2b889317461e 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -540,13 +540,12 @@ static int mgslpc_probe(struct pcmcia_device *link)
     if (debug_level >= DEBUG_LEVEL_INFO)
             printk("mgslpc_attach\n");
 
-    info = kmalloc(sizeof(MGSLPC_INFO), GFP_KERNEL);
+    info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL);
     if (!info) {
             printk("Error can't allocate device instance data\n");
             return -ENOMEM;
     }
 
-    memset(info, 0, sizeof(MGSLPC_INFO));
     info->magic = MGSLPC_MAGIC;
     INIT_WORK(&info->task, bh_handler);
     info->max_frame_size = 4096;
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index 294e9cb0c449..0ce96670f979 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -803,9 +803,7 @@ static void *ckmalloc(int size)
 {
         void *p;
 
-        p = kmalloc(size, GFP_KERNEL);
-        if (p)
-                memset(p, 0, size);
+        p = kzalloc(size, GFP_KERNEL);
         return p;
 }
 
diff --git a/drivers/char/rio/riocmd.c b/drivers/char/rio/riocmd.c
index 8cc60b693460..7321d002c34f 100644
--- a/drivers/char/rio/riocmd.c
+++ b/drivers/char/rio/riocmd.c
@@ -556,9 +556,7 @@ struct CmdBlk *RIOGetCmdBlk(void)
 {
         struct CmdBlk *CmdBlkP;
 
-        CmdBlkP = kmalloc(sizeof(struct CmdBlk), GFP_ATOMIC);
-        if (CmdBlkP)
-                memset(CmdBlkP, 0, sizeof(struct CmdBlk));
+        CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC);
         return CmdBlkP;
 }
 
diff --git a/drivers/char/rio/riotable.c b/drivers/char/rio/riotable.c
index 7e988357326e..991119c9f473 100644
--- a/drivers/char/rio/riotable.c
+++ b/drivers/char/rio/riotable.c
@@ -863,8 +863,7 @@ int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP)
                 if (PortP->TxRingBuffer)
                         memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
                 else if (p->RIOBufferSize) {
-                        PortP->TxRingBuffer = kmalloc(p->RIOBufferSize, GFP_KERNEL);
-                        memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
+                        PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL);
                 }
                 PortP->TxBufferOut = 0;
                 PortP->TxBufferIn = 0;
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 0270080ff0c0..56cbba7b6ec0 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -635,12 +635,11 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
         ctlp = sCtlNumToCtlPtr(board);
 
         /*  Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
-        info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
+        info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
         if (!info) {
                 printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
                 return;
         }
-        memset(info, 0, sizeof (struct r_port));
 
         info->magic = RPORT_MAGIC;
         info->line = line;
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index f53e51ddb9d7..fdc256b380b8 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -4324,13 +4324,12 @@ static struct mgsl_struct* mgsl_allocate_device(void)
 {
         struct mgsl_struct *info;
         
-        info = kmalloc(sizeof(struct mgsl_struct),
+        info = kzalloc(sizeof(struct mgsl_struct),
                  GFP_KERNEL);
                  
         if (!info) {
                 printk("Error can't allocate device instance data\n");
         } else {
-                memset(info, 0, sizeof(struct mgsl_struct));
                 info->magic = MGSL_MAGIC;
                 INIT_WORK(&info->task, mgsl_bh_handler);
                 info->max_frame_size = 4096;
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 428b514201f4..372a37e25620 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -3414,13 +3414,12 @@ static struct slgt_info *alloc_dev(int adapter_num, int port_num, struct pci_dev
 {
         struct slgt_info *info;
 
-        info = kmalloc(sizeof(struct slgt_info), GFP_KERNEL);
+        info = kzalloc(sizeof(struct slgt_info), GFP_KERNEL);
 
         if (!info) {
                 DBGERR(("%s device alloc failed adapter=%d port=%d\n",
                         driver_name, adapter_num, port_num));
         } else {
-                memset(info, 0, sizeof(struct slgt_info));
                 info->magic = MGSL_MAGIC;
                 INIT_WORK(&info->task, bh_handler);
                 info->max_frame_size = 4096;
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index a65407b32079..c63013b2fc36 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -3786,14 +3786,13 @@ static SLMP_INFO *alloc_dev(int adapter_num, int port_num, struct pci_dev *pdev)
 {
         SLMP_INFO *info;
 
-        info = kmalloc(sizeof(SLMP_INFO),
+        info = kzalloc(sizeof(SLMP_INFO),
                  GFP_KERNEL);
 
         if (!info) {
                 printk("%s(%d) Error can't allocate device instance data for adapter %d, port %d\n",
                         __FILE__,__LINE__, adapter_num, port_num);
         } else {
-                memset(info, 0, sizeof(SLMP_INFO));
                 info->magic = MGSL_MAGIC;
                 INIT_WORK(&info->task, bh_handler);
                 info->max_frame_size = 4096;
diff --git a/drivers/char/watchdog/mpcore_wdt.c b/drivers/char/watchdog/mpcore_wdt.c
index e88947f8fe53..0d2b27735419 100644
--- a/drivers/char/watchdog/mpcore_wdt.c
+++ b/drivers/char/watchdog/mpcore_wdt.c
@@ -328,12 +328,11 @@ static int __devinit mpcore_wdt_probe(struct platform_device *dev)
                 goto err_out;
         }
 
-        wdt = kmalloc(sizeof(struct mpcore_wdt), GFP_KERNEL);
+        wdt = kzalloc(sizeof(struct mpcore_wdt), GFP_KERNEL);
         if (!wdt) {
                 ret = -ENOMEM;
                 goto err_out;
         }
-        memset(wdt, 0, sizeof(struct mpcore_wdt));
 
         wdt->dev = &dev->dev;
         wdt->irq = platform_get_irq(dev, 0);
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index 1e7a6719d5ba..0f3fd6c9c354 100644
--- a/drivers/char/watchdog/pcwd_usb.c
+++ b/drivers/char/watchdog/pcwd_usb.c
@@ -626,12 +626,11 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
         maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
 
         /* allocate memory for our device and initialize it */
-        usb_pcwd = kmalloc (sizeof(struct usb_pcwd_private), GFP_KERNEL);
+        usb_pcwd = kzalloc (sizeof(struct usb_pcwd_private), GFP_KERNEL);
         if (usb_pcwd == NULL) {
                 printk(KERN_ERR PFX "Out of memory\n");
                 goto error;
         }
-        memset (usb_pcwd, 0x00, sizeof (*usb_pcwd));
 
         usb_pcwd_device = usb_pcwd;
 
diff --git a/drivers/ide/mips/swarm.c b/drivers/ide/mips/swarm.c
index 6e935d7c63fd..c2e29571b007 100644
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -165,12 +165,11 @@ static int __devinit swarm_ide_init_module(void)
                 goto out;
         }
 
-        if (!(pldev = kmalloc(sizeof (*pldev), GFP_KERNEL))) {
+        if (!(pldev = kzalloc(sizeof (*pldev), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto out_unregister_driver;
         }
 
-        memset (pldev, 0, sizeof (*pldev));
         pldev->name             = swarm_ide_string;
         pldev->id               = 0;
         pldev->dev.release      = swarm_ide_platform_release;
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index a91001c59b69..c5c33d35f87d 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -295,10 +295,9 @@ int rdma_resolve_ip(struct rdma_addr_client *client,
         struct addr_req *req;
         int ret = 0;
 
-        req = kmalloc(sizeof *req, GFP_KERNEL);
+        req = kzalloc(sizeof *req, GFP_KERNEL);
         if (!req)
                 return -ENOMEM;
-        memset(req, 0, sizeof *req);
 
         if (src_addr)
                 memcpy(&req->src_addr, src_addr, ip_addr_size(src_addr));
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index 5dc68cd5621b..9574088f0d4e 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -229,9 +229,8 @@ static void *alloc_ep(int size, gfp_t gfp)
 {
         struct iwch_ep_common *epc;
 
-        epc = kmalloc(size, gfp);
+        epc = kzalloc(size, gfp);
         if (epc) {
-                memset(epc, 0, size);
                 kref_init(&epc->kref);
                 spin_lock_init(&epc->lock);
                 init_waitqueue_head(&epc->waitq);
diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
index 5a7b49c35539..b10ffae7c39b 100644
--- a/drivers/input/serio/ambakmi.c
+++ b/drivers/input/serio/ambakmi.c
@@ -117,15 +117,13 @@ static int amba_kmi_probe(struct amba_device *dev, void *id)
         if (ret)
                 return ret;
 
-        kmi = kmalloc(sizeof(struct amba_kmi_port), GFP_KERNEL);
-        io = kmalloc(sizeof(struct serio), GFP_KERNEL);
+        kmi = kzalloc(sizeof(struct amba_kmi_port), GFP_KERNEL);
+        io = kzalloc(sizeof(struct serio), GFP_KERNEL);
         if (!kmi || !io) {
                 ret = -ENOMEM;
                 goto out;
         }
 
-        memset(kmi, 0, sizeof(struct amba_kmi_port));
-        memset(io, 0, sizeof(struct serio));
 
         io->id.type     = SERIO_8042;
         io->write       = amba_kmi_write;
diff --git a/drivers/input/serio/pcips2.c b/drivers/input/serio/pcips2.c
index ea5e3c6ddb62..1b404f9e3bff 100644
--- a/drivers/input/serio/pcips2.c
+++ b/drivers/input/serio/pcips2.c
@@ -140,15 +140,13 @@ static int __devinit pcips2_probe(struct pci_dev *dev, const struct pci_device_i
         if (ret)
                 goto disable;
 
-        ps2if = kmalloc(sizeof(struct pcips2_data), GFP_KERNEL);
-        serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+        ps2if = kzalloc(sizeof(struct pcips2_data), GFP_KERNEL);
+        serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
         if (!ps2if || !serio) {
                 ret = -ENOMEM;
                 goto release;
         }
 
-        memset(ps2if, 0, sizeof(struct pcips2_data));
-        memset(serio, 0, sizeof(struct serio));
 
         serio->id.type          = SERIO_8042;
         serio->write            = pcips2_write;
diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c
index d31ece8f68e9..2ad88780a170 100644
--- a/drivers/input/serio/sa1111ps2.c
+++ b/drivers/input/serio/sa1111ps2.c
@@ -234,15 +234,13 @@ static int __devinit ps2_probe(struct sa1111_dev *dev)
         struct serio *serio;
         int ret;
 
-        ps2if = kmalloc(sizeof(struct ps2if), GFP_KERNEL);
-        serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+        ps2if = kzalloc(sizeof(struct ps2if), GFP_KERNEL);
+        serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
         if (!ps2if || !serio) {
                 ret = -ENOMEM;
                 goto free;
         }
 
-        memset(ps2if, 0, sizeof(struct ps2if));
-        memset(serio, 0, sizeof(struct serio));
 
         serio->id.type          = SERIO_8042;
         serio->write            = ps2_write;
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index c96b7fe882a4..ec9e5f32f0ae 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -365,10 +365,9 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
         if (np == NULL)
                 return NULL;
 
-        dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
         if (!dev)
                 return NULL;
-        memset(dev, 0, sizeof(*dev));
 
         dev->bus = &chip->lbus;
         dev->media_bay = in_bay;
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index f8e1a135bf9d..d409f6759482 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -1053,10 +1053,9 @@ static int smu_open(struct inode *inode, struct file *file)
         struct smu_private *pp;
         unsigned long flags;
 
-        pp = kmalloc(sizeof(struct smu_private), GFP_KERNEL);
+        pp = kzalloc(sizeof(struct smu_private), GFP_KERNEL);
         if (pp == 0)
                 return -ENOMEM;
-        memset(pp, 0, sizeof(struct smu_private));
         spin_lock_init(&pp->lock);
         pp->mode = smu_file_commands;
         init_waitqueue_head(&pp->wait);
diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index 3d90fc002097..e43554e754a4 100644
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -318,10 +318,9 @@ static struct i2c_client *attach_i2c_chip(int id, const char *name)
         if (adap == NULL)
                 return NULL;
 
-        clt = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+        clt = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
         if (clt == NULL)
                 return NULL;
-        memset(clt, 0, sizeof(struct i2c_client));
 
         clt->addr = (id >> 1) & 0x7f;
         clt->adapter = adap;
diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
index 3d0354e96a97..5452da1bb1a5 100644
--- a/drivers/macintosh/therm_windtunnel.c
+++ b/drivers/macintosh/therm_windtunnel.c
@@ -431,9 +431,8 @@ do_probe( struct i2c_adapter *adapter, int addr, int kind )
                                      | I2C_FUNC_SMBUS_WRITE_BYTE) )
                 return 0;
 
-        if( !(cl=kmalloc(sizeof(*cl), GFP_KERNEL)) )
+        if( !(cl=kzalloc(sizeof(*cl), GFP_KERNEL)) )
                 return -ENOMEM;
-        memset( cl, 0, sizeof(struct i2c_client) );
 
         cl->addr = addr;
         cl->adapter = adapter;
diff --git a/drivers/macintosh/windfarm_lm75_sensor.c b/drivers/macintosh/windfarm_lm75_sensor.c
index a0fabf3c2008..7e10c3ab4d50 100644
--- a/drivers/macintosh/windfarm_lm75_sensor.c
+++ b/drivers/macintosh/windfarm_lm75_sensor.c
@@ -117,10 +117,9 @@ static struct wf_lm75_sensor *wf_lm75_create(struct i2c_adapter *adapter,
         DBG("wf_lm75: creating  %s device at address 0x%02x\n",
             ds1775 ? "ds1775" : "lm75", addr);
 
-        lm = kmalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
+        lm = kzalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
         if (lm == NULL)
                 return NULL;
-        memset(lm, 0, sizeof(struct wf_lm75_sensor));
 
         /* Usual rant about sensor names not beeing very consistent in
          * the device-tree, oh well ...
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 1a876f9965e0..144071e70a93 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -951,13 +951,12 @@ static struct mirror_set *alloc_context(unsigned int nr_mirrors,
 
         len = sizeof(*ms) + (sizeof(ms->mirror[0]) * nr_mirrors);
 
-        ms = kmalloc(len, GFP_KERNEL);
+        ms = kzalloc(len, GFP_KERNEL);
         if (!ms) {
                 ti->error = "Cannot allocate mirror context";
                 return NULL;
         }
 
-        memset(ms, 0, len);
         spin_lock_init(&ms->lock);
 
         ms->ti = ti;
diff --git a/drivers/media/dvb/cinergyT2/cinergyT2.c b/drivers/media/dvb/cinergyT2/cinergyT2.c
index 5a1449f485cf..28929b618e20 100644
--- a/drivers/media/dvb/cinergyT2/cinergyT2.c
+++ b/drivers/media/dvb/cinergyT2/cinergyT2.c
@@ -905,12 +905,11 @@ static int cinergyt2_probe (struct usb_interface *intf,
         struct cinergyt2 *cinergyt2;
         int err;
 
-        if (!(cinergyt2 = kmalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
+        if (!(cinergyt2 = kzalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
                 dprintk(1, "out of memory?!?\n");
                 return -ENOMEM;
         }
 
-        memset (cinergyt2, 0, sizeof (struct cinergyt2));
         usb_set_intfdata (intf, (void *) cinergyt2);
 
         mutex_init(&cinergyt2->sem);
diff --git a/drivers/media/video/cpia2/cpia2_core.c b/drivers/media/video/cpia2/cpia2_core.c
index 55aab8d38880..a76bd786cf13 100644
--- a/drivers/media/video/cpia2/cpia2_core.c
+++ b/drivers/media/video/cpia2/cpia2_core.c
@@ -2224,15 +2224,13 @@ struct camera_data *cpia2_init_camera_struct(void)
 {
         struct camera_data *cam;
 
-        cam = kmalloc(sizeof(*cam), GFP_KERNEL);
+        cam = kzalloc(sizeof(*cam), GFP_KERNEL);
 
         if (!cam) {
                 ERR("couldn't kmalloc cpia2 struct\n");
                 return NULL;
         }
 
-        /* Default everything to 0 */
-        memset(cam, 0, sizeof(struct camera_data));
 
         cam->present = 1;
         mutex_init(&cam->busy_lock);
diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index 507b1d4260ed..11cfcf18ec34 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -812,10 +812,9 @@ static int msp_attach(struct i2c_adapter *adapter, int address, int kind)
         int msp_product, msp_prod_hi, msp_prod_lo;
         int msp_rom;
 
-        client = kmalloc(sizeof(*client), GFP_KERNEL);
+        client = kzalloc(sizeof(*client), GFP_KERNEL);
         if (client == NULL)
                 return -ENOMEM;
-        memset(client, 0, sizeof(*client));
         client->addr = address;
         client->adapter = adapter;
         client->driver = &i2c_driver;
diff --git a/drivers/media/video/planb.c b/drivers/media/video/planb.c
index 1455a8f4e930..4ab1af74a970 100644
--- a/drivers/media/video/planb.c
+++ b/drivers/media/video/planb.c
@@ -353,9 +353,8 @@ static int planb_prepare_open(struct planb *pb)
                 * PLANB_DUMMY)*sizeof(struct dbdma_cmd)
                 +(PLANB_MAXLINES*((PLANB_MAXPIXELS+7)& ~7))/8
                 +MAX_GBUFFERS*sizeof(unsigned int);
-        if ((pb->priv_space = kmalloc (size, GFP_KERNEL)) == 0)
+        if ((pb->priv_space = kzalloc (size, GFP_KERNEL)) == 0)
                 return -ENOMEM;
-        memset ((void *) pb->priv_space, 0, size);
         pb->overlay_last1 = pb->ch1_cmd = (volatile struct dbdma_cmd *)
                                                 DBDMA_ALIGN (pb->priv_space);
         pb->overlay_last2 = pb->ch2_cmd = pb->ch1_cmd + pb->tab_size;
diff --git a/drivers/media/video/usbvideo/vicam.c b/drivers/media/video/usbvideo/vicam.c
index 2d9c0dd3b733..ff555129c82f 100644
--- a/drivers/media/video/usbvideo/vicam.c
+++ b/drivers/media/video/usbvideo/vicam.c
@@ -1130,13 +1130,12 @@ vicam_probe( struct usb_interface *intf, const struct usb_device_id *id)
         }
 
         if ((cam =
-             kmalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) {
+             kzalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) {
                 printk(KERN_WARNING
                        "could not allocate kernel memory for vicam_camera struct\n");
                 return -ENOMEM;
         }
 
-        memset(cam, 0, sizeof (struct vicam_camera));
 
         cam->shutter_speed = 15;
 
diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c
index 75f401d52fda..b4ed57e02729 100644
--- a/drivers/mfd/mcp-core.c
+++ b/drivers/mfd/mcp-core.c
@@ -200,9 +200,8 @@ struct mcp *mcp_host_alloc(struct device *parent, size_t size)
 {
         struct mcp *mcp;
 
-        mcp = kmalloc(sizeof(struct mcp) + size, GFP_KERNEL);
+        mcp = kzalloc(sizeof(struct mcp) + size, GFP_KERNEL);
         if (mcp) {
-                memset(mcp, 0, sizeof(struct mcp) + size);
                 spin_lock_init(&mcp->lock);
                 mcp->attached_device.parent = parent;
                 mcp->attached_device.bus = &mcp_bus_type;
diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index 149810a084f5..e03f1bcd4f9f 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -484,12 +484,11 @@ static int ucb1x00_probe(struct mcp *mcp)
                 goto err_disable;
         }
 
-        ucb = kmalloc(sizeof(struct ucb1x00), GFP_KERNEL);
+        ucb = kzalloc(sizeof(struct ucb1x00), GFP_KERNEL);
         ret = -ENOMEM;
         if (!ucb)
                 goto err_disable;
 
-        memset(ucb, 0, sizeof(struct ucb1x00));
 
         ucb->cdev.class = &ucb1x00_class;
         ucb->cdev.dev = &mcp->attached_device;
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index 7798f590e5aa..f75306059971 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -979,10 +979,9 @@ static int asus_hotk_add(struct acpi_device *device)
         printk(ASUS_NOTICE "Asus Laptop Support version %s\n",
                ASUS_LAPTOP_VERSION);
 
-        hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
+        hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
         if (!hotk)
                 return -ENOMEM;
-        memset(hotk, 0, sizeof(struct asus_hotk));
 
         hotk->handle = device->handle;
         strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
diff --git a/drivers/misc/ibmasm/command.c b/drivers/misc/ibmasm/command.c
index b5df347c81b9..6497872df524 100644
--- a/drivers/misc/ibmasm/command.c
+++ b/drivers/misc/ibmasm/command.c
@@ -41,18 +41,16 @@ struct command *ibmasm_new_command(struct service_processor *sp, size_t buffer_s
         if (buffer_size > IBMASM_CMD_MAX_BUFFER_SIZE)
                 return NULL;
 
-        cmd = kmalloc(sizeof(struct command), GFP_KERNEL);
+        cmd = kzalloc(sizeof(struct command), GFP_KERNEL);
         if (cmd == NULL)
                 return NULL;
 
-        memset(cmd, 0, sizeof(*cmd));
 
-        cmd->buffer = kmalloc(buffer_size, GFP_KERNEL);
+        cmd->buffer = kzalloc(buffer_size, GFP_KERNEL);
         if (cmd->buffer == NULL) {
                 kfree(cmd);
                 return NULL;
         }
-        memset(cmd->buffer, 0, buffer_size);
         cmd->buffer_size = buffer_size;
 
         kobject_init(&cmd->kobj);
diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index eb7b073734b8..22a7e8ba211d 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -563,11 +563,10 @@ static ssize_t remote_settings_file_write(struct file *file, const char __user *
         if (*offset != 0)
                 return 0;
 
-        buff = kmalloc (count + 1, GFP_KERNEL);
+        buff = kzalloc (count + 1, GFP_KERNEL);
         if (!buff)
                 return -ENOMEM;
 
-        memset(buff, 0x0, count + 1);
 
         if (copy_from_user(buff, ubuff, count)) {
                 kfree(buff);
diff --git a/drivers/misc/ibmasm/module.c b/drivers/misc/ibmasm/module.c
index fb03a853fac4..4f9d4a9da983 100644
--- a/drivers/misc/ibmasm/module.c
+++ b/drivers/misc/ibmasm/module.c
@@ -77,13 +77,12 @@ static int __devinit ibmasm_init_one(struct pci_dev *pdev, const struct pci_devi
         /* vnc client won't work without bus-mastering */
         pci_set_master(pdev);
 
-        sp = kmalloc(sizeof(struct service_processor), GFP_KERNEL);
+        sp = kzalloc(sizeof(struct service_processor), GFP_KERNEL);
         if (sp == NULL) {
                 dev_err(&pdev->dev, "Failed to allocate memory\n");
                 result = -ENOMEM;
                 goto error_kmalloc;
         }
-        memset(sp, 0, sizeof(struct service_processor));
 
         spin_lock_init(&sp->lock);
         INIT_LIST_HEAD(&sp->command_queue);
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index cbd4b6e3e17c..93fe2e5dd616 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -414,13 +414,12 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
                 return ERR_PTR(-ENOSPC);
         __set_bit(devidx, dev_use);
 
-        md = kmalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
+        md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
         if (!md) {
                 ret = -ENOMEM;
                 goto out;
         }
 
-        memset(md, 0, sizeof(struct mmc_blk_data));
 
         /*
          * Set the read-only status based on the supported commands
diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index 96fb0ec905a7..37f1b6ff5c12 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -1519,14 +1519,13 @@ static void b44_setup_pseudo_magicp(struct b44 *bp)
         u8 *pwol_pattern;
         u8 pwol_mask[B44_PMASK_SIZE];
 
-        pwol_pattern = kmalloc(B44_PATTERN_SIZE, GFP_KERNEL);
+        pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
         if (!pwol_pattern) {
                 printk(KERN_ERR PFX "Memory not available for WOL\n");
                 return;
         }
 
         /* Ipv4 magic packet pattern - pattern 0.*/
-        memset(pwol_pattern, 0, B44_PATTERN_SIZE);
         memset(pwol_mask, 0, B44_PMASK_SIZE);
         plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
                                   B44_ETHIPV4UDP_HLEN);
diff --git a/drivers/net/bsd_comp.c b/drivers/net/bsd_comp.c
index 7845eaf6f29f..202d4a4ef751 100644
--- a/drivers/net/bsd_comp.c
+++ b/drivers/net/bsd_comp.c
@@ -395,14 +395,13 @@ static void *bsd_alloc (unsigned char *options, int opt_len, int decomp)
  * Allocate the main control structure for this instance.
  */
     maxmaxcode = MAXCODE(bits);
-    db         = kmalloc(sizeof (struct bsd_db),
+    db         = kzalloc(sizeof (struct bsd_db),
                                             GFP_KERNEL);
     if (!db)
       {
         return NULL;
       }
 
-    memset (db, 0, sizeof(struct bsd_db));
 /*
  * Allocate space for the dictionary. This may be more than one page in
  * length.
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 136827f8dc2e..6d1d50a19783 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -5137,12 +5137,10 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
                         goto out_unmap;
                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
         }
-        np->rx_skb = kmalloc(sizeof(struct nv_skb_map) * np->rx_ring_size, GFP_KERNEL);
-        np->tx_skb = kmalloc(sizeof(struct nv_skb_map) * np->tx_ring_size, GFP_KERNEL);
+        np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
+        np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
         if (!np->rx_skb || !np->tx_skb)
                 goto out_freering;
-        memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
-        memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
 
         dev->open = nv_open;
         dev->stop = nv_close;
diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
index 3be8c5047599..205f09672492 100644
--- a/drivers/net/hamradio/dmascc.c
+++ b/drivers/net/hamradio/dmascc.c
@@ -453,8 +453,8 @@ static int __init setup_adapter(int card_base, int type, int n)
         int scc_base = card_base + hw[type].scc_offset;
         char *chipnames[] = CHIPNAMES;
 
-        /* Allocate memory */
-        info = kmalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA);
+        /* Initialize what is necessary for write_scc and write_scc_data */
+        info = kzalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA);
         if (!info) {
                 printk(KERN_ERR "dmascc: "
                        "could not allocate memory for %s at %#3x\n",
@@ -462,8 +462,6 @@ static int __init setup_adapter(int card_base, int type, int n)
                 goto out;
         }
 
-        /* Initialize what is necessary for write_scc and write_scc_data */
-        memset(info, 0, sizeof(struct scc_info));
 
         info->dev[0] = alloc_netdev(0, "", dev_setup);
         if (!info->dev[0]) {
diff --git a/drivers/net/irda/irport.c b/drivers/net/irda/irport.c
index 3078c419cb02..20732458f5ac 100644
--- a/drivers/net/irda/irport.c
+++ b/drivers/net/irda/irport.c
@@ -164,14 +164,13 @@ irport_open(int i, unsigned int iobase, unsigned int irq)
         
         /* Allocate memory if needed */
         if (self->tx_buff.truesize > 0) {
-                self->tx_buff.head = kmalloc(self->tx_buff.truesize,
+                self->tx_buff.head = kzalloc(self->tx_buff.truesize,
                                                       GFP_KERNEL);
                 if (self->tx_buff.head == NULL) {
                         IRDA_ERROR("%s(), can't allocate memory for "
                                    "transmit buffer!\n", __FUNCTION__);
                         goto err_out4;
                 }
-                memset(self->tx_buff.head, 0, self->tx_buff.truesize);
         }       
         self->tx_buff.data = self->tx_buff.head;
 
diff --git a/drivers/net/irda/irtty-sir.c b/drivers/net/irda/irtty-sir.c
index ad1857364d51..6f5f697ec9f8 100644
--- a/drivers/net/irda/irtty-sir.c
+++ b/drivers/net/irda/irtty-sir.c
@@ -505,10 +505,9 @@ static int irtty_open(struct tty_struct *tty)
         }
 
         /* allocate private device info block */
-        priv = kmalloc(sizeof(*priv), GFP_KERNEL);
+        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
         if (!priv)
                 goto out_put;
-        memset(priv, 0, sizeof(*priv));
 
         priv->magic = IRTTY_MAGIC;
         priv->tty = tty;
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index 347d50cd77d4..0433c41f9029 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -822,10 +822,9 @@ static int veth_init_connection(u8 rlp)
              || ! HvLpConfig_doLpsCommunicateOnVirtualLan(this_lp, rlp) )
                 return 0;
 
-        cnx = kmalloc(sizeof(*cnx), GFP_KERNEL);
+        cnx = kzalloc(sizeof(*cnx), GFP_KERNEL);
         if (! cnx)
                 return -ENOMEM;
-        memset(cnx, 0, sizeof(*cnx));
 
         cnx->remote_lp = rlp;
         spin_lock_init(&cnx->lock);
@@ -852,14 +851,13 @@ static int veth_init_connection(u8 rlp)
         if (rc != 0)
                 return rc;
 
-        msgs = kmalloc(VETH_NUMBUFFERS * sizeof(struct veth_msg), GFP_KERNEL);
+        msgs = kcalloc(VETH_NUMBUFFERS, sizeof(struct veth_msg), GFP_KERNEL);
         if (! msgs) {
                 veth_error("Can't allocate buffers for LPAR %d.\n", rlp);
                 return -ENOMEM;
         }
 
         cnx->msgs = msgs;
-        memset(msgs, 0, VETH_NUMBUFFERS * sizeof(struct veth_msg));
 
         for (i = 0; i < VETH_NUMBUFFERS; i++) {
                 msgs[i].token = i;
diff --git a/drivers/net/lance.c b/drivers/net/lance.c
index a2f37e52b928..a4e5fab12628 100644
--- a/drivers/net/lance.c
+++ b/drivers/net/lance.c
@@ -533,11 +533,10 @@ static int __init lance_probe1(struct net_device *dev, int ioaddr, int irq, int
         dev->base_addr = ioaddr;
         /* Make certain the data structures used by the LANCE are aligned and DMAble. */
 
-        lp = kmalloc(sizeof(*lp), GFP_DMA | GFP_KERNEL);
+        lp = kzalloc(sizeof(*lp), GFP_DMA | GFP_KERNEL);
         if(lp==NULL)
                 return -ENODEV;
         if (lance_debug > 6) printk(" (#0x%05lx)", (unsigned long)lp);
-        memset(lp, 0, sizeof(*lp));
         dev->priv = lp;
         lp->name = chipname;
         lp->rx_buffs = (unsigned long)kmalloc(PKT_BUF_SZ*RX_RING_SIZE,
diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c
index 0d1c7a41c9c6..ea9414c4d900 100644
--- a/drivers/net/pcmcia/com20020_cs.c
+++ b/drivers/net/pcmcia/com20020_cs.c
@@ -147,7 +147,7 @@ static int com20020_probe(struct pcmcia_device *p_dev)
     DEBUG(0, "com20020_attach()\n");
 
     /* Create new network device */
-    info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
+    info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
     if (!info)
         goto fail_alloc_info;
 
@@ -155,7 +155,6 @@ static int com20020_probe(struct pcmcia_device *p_dev)
     if (!dev)
         goto fail_alloc_dev;
 
-    memset(info, 0, sizeof(struct com20020_dev_t));
     lp = dev->priv;
     lp->timeout = timeout;
     lp->backplane = backplane;
diff --git a/drivers/net/pcmcia/ibmtr_cs.c b/drivers/net/pcmcia/ibmtr_cs.c
index 4ecb8ca5a992..4eafa4f42cff 100644
--- a/drivers/net/pcmcia/ibmtr_cs.c
+++ b/drivers/net/pcmcia/ibmtr_cs.c
@@ -146,9 +146,8 @@ static int __devinit ibmtr_attach(struct pcmcia_device *link)
     DEBUG(0, "ibmtr_attach()\n");
 
     /* Create new token-ring device */
-    info = kmalloc(sizeof(*info), GFP_KERNEL); 
+    info = kzalloc(sizeof(*info), GFP_KERNEL);
     if (!info) return -ENOMEM;
-    memset(info,0,sizeof(*info));
     dev = alloc_trdev(sizeof(struct tok_info));
     if (!dev) {
         kfree(info);
diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
index caabbc408c34..27f5b904f48e 100644
--- a/drivers/net/ppp_async.c
+++ b/drivers/net/ppp_async.c
@@ -159,12 +159,11 @@ ppp_asynctty_open(struct tty_struct *tty)
         int err;
 
         err = -ENOMEM;
-        ap = kmalloc(sizeof(*ap), GFP_KERNEL);
+        ap = kzalloc(sizeof(*ap), GFP_KERNEL);
         if (ap == 0)
                 goto out;
 
         /* initialize the asyncppp structure */
-        memset(ap, 0, sizeof(*ap));
         ap->tty = tty;
         ap->mru = PPP_MRU;
         spin_lock_init(&ap->xmit_lock);
diff --git a/drivers/net/ppp_deflate.c b/drivers/net/ppp_deflate.c
index 72c8d6628f58..eb98b661efba 100644
--- a/drivers/net/ppp_deflate.c
+++ b/drivers/net/ppp_deflate.c
@@ -121,12 +121,11 @@ static void *z_comp_alloc(unsigned char *options, int opt_len)
         if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
                 return NULL;
 
-        state = kmalloc(sizeof(*state),
+        state = kzalloc(sizeof(*state),
                                                      GFP_KERNEL);
         if (state == NULL)
                 return NULL;
 
-        memset (state, 0, sizeof (struct ppp_deflate_state));
         state->strm.next_in   = NULL;
         state->w_size         = w_size;
         state->strm.workspace = vmalloc(zlib_deflate_workspacesize());
@@ -341,11 +340,10 @@ static void *z_decomp_alloc(unsigned char *options, int opt_len)
         if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
                 return NULL;
 
-        state = kmalloc(sizeof(*state), GFP_KERNEL);
+        state = kzalloc(sizeof(*state), GFP_KERNEL);
         if (state == NULL)
                 return NULL;
 
-        memset (state, 0, sizeof (struct ppp_deflate_state));
         state->w_size         = w_size;
         state->strm.next_out  = NULL;
         state->strm.workspace = kmalloc(zlib_inflate_workspacesize(),
diff --git a/drivers/net/ppp_mppe.c b/drivers/net/ppp_mppe.c
index d5bdd2574659..f79cf87a2bff 100644
--- a/drivers/net/ppp_mppe.c
+++ b/drivers/net/ppp_mppe.c
@@ -200,11 +200,10 @@ static void *mppe_alloc(unsigned char *options, int optlen)
             || options[0] != CI_MPPE || options[1] != CILEN_MPPE)
                 goto out;
 
-        state = kmalloc(sizeof(*state), GFP_KERNEL);
+        state = kzalloc(sizeof(*state), GFP_KERNEL);
         if (state == NULL)
                 goto out;
 
-        memset(state, 0, sizeof(*state));
 
         state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
         if (IS_ERR(state->arc4)) {
diff --git a/drivers/net/ppp_synctty.c b/drivers/net/ppp_synctty.c
index 5918fab38349..ce64032a465a 100644
--- a/drivers/net/ppp_synctty.c
+++ b/drivers/net/ppp_synctty.c
@@ -207,13 +207,12 @@ ppp_sync_open(struct tty_struct *tty)
         struct syncppp *ap;
         int err;
 
-        ap = kmalloc(sizeof(*ap), GFP_KERNEL);
+        ap = kzalloc(sizeof(*ap), GFP_KERNEL);
         err = -ENOMEM;
         if (ap == 0)
                 goto out;
 
         /* initialize the syncppp structure */
-        memset(ap, 0, sizeof(*ap));
         ap->tty = tty;
         ap->mru = PPP_MRU;
         spin_lock_init(&ap->xmit_lock);
diff --git a/drivers/net/shaper.c b/drivers/net/shaper.c
index e886e8d7cfdf..4c3d98ff4cd4 100644
--- a/drivers/net/shaper.c
+++ b/drivers/net/shaper.c
@@ -600,10 +600,9 @@ static int __init shaper_init(void)
                 return -ENODEV;
 
         alloc_size = sizeof(*dev) * shapers;
-        devs = kmalloc(alloc_size, GFP_KERNEL);
+        devs = kzalloc(alloc_size, GFP_KERNEL);
         if (!devs)
                 return -ENOMEM;
-        memset(devs, 0, alloc_size);
 
         for (i = 0; i < shapers; i++) {
 
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index 6b63b350cd52..8ead774d14c8 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -315,12 +315,11 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
                 return -ENODEV;
         }
 
-        card = kmalloc(sizeof(card_t), GFP_KERNEL);
+        card = kzalloc(sizeof(card_t), GFP_KERNEL);
         if (card == NULL) {
                 printk(KERN_ERR "c101: unable to allocate memory\n");
                 return -ENOBUFS;
         }
-        memset(card, 0, sizeof(card_t));
 
         card->dev = alloc_hdlcdev(card);
         if (!card->dev) {
diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c
index 9ef49ce148b2..26058b4f8f36 100644
--- a/drivers/net/wan/cosa.c
+++ b/drivers/net/wan/cosa.c
@@ -572,13 +572,11 @@ static int cosa_probe(int base, int irq, int dma)
         sprintf(cosa->name, "cosa%d", cosa->num);
 
         /* Initialize the per-channel data */
-        cosa->chan = kmalloc(sizeof(struct channel_data)*cosa->nchannels,
-                             GFP_KERNEL);
+        cosa->chan = kcalloc(cosa->nchannels, sizeof(struct channel_data), GFP_KERNEL);
         if (!cosa->chan) {
                 err = -ENOMEM;
                 goto err_out3;
         }
-        memset(cosa->chan, 0, sizeof(struct channel_data)*cosa->nchannels);
         for (i=0; i<cosa->nchannels; i++) {
                 cosa->chan[i].cosa = cosa;
                 cosa->chan[i].num = i;
diff --git a/drivers/net/wan/cycx_main.c b/drivers/net/wan/cycx_main.c
index 6e5f1c898517..a0e8611ad8e8 100644
--- a/drivers/net/wan/cycx_main.c
+++ b/drivers/net/wan/cycx_main.c
@@ -113,12 +113,10 @@ static int __init cycx_init(void)
         /* Verify number of cards and allocate adapter data space */
         cycx_ncards = min_t(int, cycx_ncards, CYCX_MAX_CARDS);
         cycx_ncards = max_t(int, cycx_ncards, 1);
-        cycx_card_array = kmalloc(sizeof(struct cycx_device) * cycx_ncards,
-                                  GFP_KERNEL);
+        cycx_card_array = kcalloc(cycx_ncards, sizeof(struct cycx_device), GFP_KERNEL);
         if (!cycx_card_array)
                 goto out;
 
-        memset(cycx_card_array, 0, sizeof(struct cycx_device) * cycx_ncards);
 
         /* Register adapters with WAN router */
         for (cnt = 0; cnt < cycx_ncards; ++cnt) {
diff --git a/drivers/net/wan/cycx_x25.c b/drivers/net/wan/cycx_x25.c
index 016b3ff3ea5e..a8af28b273d3 100644
--- a/drivers/net/wan/cycx_x25.c
+++ b/drivers/net/wan/cycx_x25.c
@@ -376,11 +376,10 @@ static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
         }
 
         /* allocate and initialize private data */
-        chan = kmalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL);
+        chan = kzalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL);
         if (!chan)
                 return -ENOMEM;
 
-        memset(chan, 0, sizeof(*chan));
         strcpy(chan->name, conf->name);
         chan->card = card;
         chan->link = conf->port;
diff --git a/drivers/net/wan/dscc4.c b/drivers/net/wan/dscc4.c
index dca024471455..50d2f9108dca 100644
--- a/drivers/net/wan/dscc4.c
+++ b/drivers/net/wan/dscc4.c
@@ -890,12 +890,11 @@ static int dscc4_found1(struct pci_dev *pdev, void __iomem *ioaddr)
         struct dscc4_dev_priv *root;
         int i, ret = -ENOMEM;
 
-        root = kmalloc(dev_per_card*sizeof(*root), GFP_KERNEL);
+        root = kcalloc(dev_per_card, sizeof(*root), GFP_KERNEL);
         if (!root) {
                 printk(KERN_ERR "%s: can't allocate data\n", DRV_NAME);
                 goto err_out;
         }
-        memset(root, 0, dev_per_card*sizeof(*root));
 
         for (i = 0; i < dev_per_card; i++) {
                 root[i].dev = alloc_hdlcdev(root + i);
@@ -903,12 +902,11 @@ static int dscc4_found1(struct pci_dev *pdev, void __iomem *ioaddr)
                         goto err_free_dev;
         }
 
-        ppriv = kmalloc(sizeof(*ppriv), GFP_KERNEL);
+        ppriv = kzalloc(sizeof(*ppriv), GFP_KERNEL);
         if (!ppriv) {
                 printk(KERN_ERR "%s: can't allocate private data\n", DRV_NAME);
                 goto err_free_dev;
         }
-        memset(ppriv, 0, sizeof(struct dscc4_pci_priv));
 
         ppriv->root = root;
         spin_lock_init(&ppriv->lock);
diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
index 58a53b6d9b42..12dae8e24844 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c
@@ -2476,13 +2476,12 @@ fst_add_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         }
 
         /* Allocate driver private data */
-        card = kmalloc(sizeof (struct fst_card_info), GFP_KERNEL);
+        card = kzalloc(sizeof (struct fst_card_info), GFP_KERNEL);
         if (card == NULL) {
                 printk_err("FarSync card found but insufficient memory for"
                            " driver storage\n");
                 return -ENOMEM;
         }
-        memset(card, 0, sizeof (struct fst_card_info));
 
         /* Try to enable the device */
         if ((err = pci_enable_device(pdev)) != 0) {
diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c
index 9ba3e4ee6ec7..bf5f8d9b5c83 100644
--- a/drivers/net/wan/hostess_sv11.c
+++ b/drivers/net/wan/hostess_sv11.c
@@ -231,11 +231,10 @@ static struct sv11_device *sv11_init(int iobase, int irq)
                 return NULL;
         }
         
-        sv = kmalloc(sizeof(struct sv11_device), GFP_KERNEL);
+        sv = kzalloc(sizeof(struct sv11_device), GFP_KERNEL);
         if(!sv)
                 goto fail3;
                         
-        memset(sv, 0, sizeof(*sv));
         sv->if_ptr=&sv->netdev;
         
         sv->netdev.dev = alloc_netdev(0, "hdlc%d", sv11_setup);
diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c
index 5c322dfb79f6..cbdf0b748bde 100644
--- a/drivers/net/wan/n2.c
+++ b/drivers/net/wan/n2.c
@@ -351,12 +351,11 @@ static int __init n2_run(unsigned long io, unsigned long irq,
                 return -ENODEV;
         }
 
-        card = kmalloc(sizeof(card_t), GFP_KERNEL);
+        card = kzalloc(sizeof(card_t), GFP_KERNEL);
         if (card == NULL) {
                 printk(KERN_ERR "n2: unable to allocate memory\n");
                 return -ENOBUFS;
         }
-        memset(card, 0, sizeof(card_t));
 
         card->ports[0].dev = alloc_hdlcdev(&card->ports[0]);
         card->ports[1].dev = alloc_hdlcdev(&card->ports[1]);
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index 5d8c78ee2cd9..99fee2f1d019 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -3456,7 +3456,7 @@ cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         if ((err = pci_enable_device(pdev)) < 0)
                 return err;
 
-        card = kmalloc(sizeof(pc300_t), GFP_KERNEL);
+        card = kzalloc(sizeof(pc300_t), GFP_KERNEL);
         if (card == NULL) {
                 printk("PC300 found at RAM 0x%016llx, "
                        "but could not allocate card structure.\n",
@@ -3464,7 +3464,6 @@ cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 err = -ENOMEM;
                 goto err_disable_dev;
         }
-        memset(card, 0, sizeof(pc300_t));
 
         err = -ENODEV;
 
diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c
index dfbd3b00f03b..6353cb5c658d 100644
--- a/drivers/net/wan/pc300too.c
+++ b/drivers/net/wan/pc300too.c
@@ -334,14 +334,13 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
                 return i;
         }
 
-        card = kmalloc(sizeof(card_t), GFP_KERNEL);
+        card = kzalloc(sizeof(card_t), GFP_KERNEL);
         if (card == NULL) {
                 printk(KERN_ERR "pc300: unable to allocate memory\n");
                 pci_release_regions(pdev);
                 pci_disable_device(pdev);
                 return -ENOBUFS;
         }
-        memset(card, 0, sizeof(card_t));
         pci_set_drvdata(pdev, card);
 
         if (pdev->device == PCI_DEVICE_ID_PC300_TE_1 ||
diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c
index 7f720de2e9f0..092e51d89036 100644
--- a/drivers/net/wan/pci200syn.c
+++ b/drivers/net/wan/pci200syn.c
@@ -312,14 +312,13 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
                 return i;
         }
 
-        card = kmalloc(sizeof(card_t), GFP_KERNEL);
+        card = kzalloc(sizeof(card_t), GFP_KERNEL);
         if (card == NULL) {
                 printk(KERN_ERR "pci200syn: unable to allocate memory\n");
                 pci_release_regions(pdev);
                 pci_disable_device(pdev);
                 return -ENOBUFS;
         }
-        memset(card, 0, sizeof(card_t));
         pci_set_drvdata(pdev, card);
         card->ports[0].dev = alloc_hdlcdev(&card->ports[0]);
         card->ports[1].dev = alloc_hdlcdev(&card->ports[1]);
diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c
index 6a485f0556f4..792e588d7d61 100644
--- a/drivers/net/wan/sdla.c
+++ b/drivers/net/wan/sdla.c
@@ -1196,10 +1196,9 @@ static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int r
                 
         if (read)
         {       
-                temp = kmalloc(mem.len, GFP_KERNEL);
+                temp = kzalloc(mem.len, GFP_KERNEL);
                 if (!temp)
                         return(-ENOMEM);
-                memset(temp, 0, mem.len);
                 sdla_read(dev, mem.addr, temp, mem.len);
                 if(copy_to_user(mem.data, temp, mem.len))
                 {
diff --git a/drivers/net/wan/sealevel.c b/drivers/net/wan/sealevel.c
index 131358108c5a..11276bf3149f 100644
--- a/drivers/net/wan/sealevel.c
+++ b/drivers/net/wan/sealevel.c
@@ -270,11 +270,10 @@ static __init struct slvl_board *slvl_init(int iobase, int irq,
                 return NULL;
         }
         
-        b = kmalloc(sizeof(struct slvl_board), GFP_KERNEL);
+        b = kzalloc(sizeof(struct slvl_board), GFP_KERNEL);
         if(!b)
                 goto fail3;
 
-        memset(b, 0, sizeof(*b));
         if (!(b->dev[0]= slvl_alloc(iobase, irq)))
                 goto fail2;
 
diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
index c73601574334..3c78f9856380 100644
--- a/drivers/net/wan/wanxl.c
+++ b/drivers/net/wan/wanxl.c
@@ -599,7 +599,7 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev,
         }
 
         alloc_size = sizeof(card_t) + ports * sizeof(port_t);
-        card = kmalloc(alloc_size, GFP_KERNEL);
+        card = kzalloc(alloc_size, GFP_KERNEL);
         if (card == NULL) {
                 printk(KERN_ERR "wanXL %s: unable to allocate memory\n",
                        pci_name(pdev));
@@ -607,7 +607,6 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev,
                 pci_disable_device(pdev);
                 return -ENOBUFS;
         }
-        memset(card, 0, alloc_size);
 
         pci_set_drvdata(pdev, card);
         card->pdev = pdev;
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index 1c9edd97accd..c48b1cc63fd5 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -786,14 +786,12 @@ static int __init init_x25_asy(void)
         printk(KERN_INFO "X.25 async: version 0.00 ALPHA "
                         "(dynamic channels, max=%d).\n", x25_asy_maxdev );
 
-        x25_asy_devs = kmalloc(sizeof(struct net_device *)*x25_asy_maxdev, 
-                               GFP_KERNEL);
+        x25_asy_devs = kcalloc(x25_asy_maxdev, sizeof(struct net_device*), GFP_KERNEL);
         if (!x25_asy_devs) {
                 printk(KERN_WARNING "X25 async: Can't allocate x25_asy_ctrls[] "
                                 "array! Uaargh! (-> No X.25 available)\n");
                 return -ENOMEM;
         }
-        memset(x25_asy_devs, 0, sizeof(struct net_device *)*x25_asy_maxdev); 
 
         return tty_register_ldisc(N_X25, &x25_ldisc);
 }
diff --git a/drivers/nubus/nubus.c b/drivers/nubus/nubus.c
index 3a0a3a734933..e503c9c98032 100644
--- a/drivers/nubus/nubus.c
+++ b/drivers/nubus/nubus.c
@@ -466,9 +466,8 @@ static struct nubus_dev* __init
                        parent->base, dir.base);
 
         /* Actually we should probably panic if this fails */
-        if ((dev = kmalloc(sizeof(*dev), GFP_ATOMIC)) == NULL)
+        if ((dev = kzalloc(sizeof(*dev), GFP_ATOMIC)) == NULL)
                 return NULL;    
-        memset(dev, 0, sizeof(*dev));
         dev->resid = parent->type;
         dev->directory = dir.base;
         dev->board = board;
@@ -800,9 +799,8 @@ static struct nubus_board* __init nubus_add_board(int slot, int bytelanes)
         nubus_rewind(&rp, FORMAT_BLOCK_SIZE, bytelanes);
 
         /* Actually we should probably panic if this fails */
-        if ((board = kmalloc(sizeof(*board), GFP_ATOMIC)) == NULL)
+        if ((board = kzalloc(sizeof(*board), GFP_ATOMIC)) == NULL)
                 return NULL;    
-        memset(board, 0, sizeof(*board));
         board->fblock = rp;
 
         /* Dump the format block for debugging purposes */
diff --git a/drivers/parport/parport_cs.c b/drivers/parport/parport_cs.c
index 8b7d84eca05d..802a81d47367 100644
--- a/drivers/parport/parport_cs.c
+++ b/drivers/parport/parport_cs.c
@@ -105,9 +105,8 @@ static int parport_probe(struct pcmcia_device *link)
     DEBUG(0, "parport_attach()\n");
 
     /* Create new parport device */
-    info = kmalloc(sizeof(*info), GFP_KERNEL);
+    info = kzalloc(sizeof(*info), GFP_KERNEL);
     if (!info) return -ENOMEM;
-    memset(info, 0, sizeof(*info));
     link->priv = info;
     info->p_dev = link;
 
diff --git a/drivers/parport/parport_serial.c b/drivers/parport/parport_serial.c
index 90ea3b8b99b0..bd6ad8b38168 100644
--- a/drivers/parport/parport_serial.c
+++ b/drivers/parport/parport_serial.c
@@ -324,10 +324,9 @@ static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
         struct parport_serial_private *priv;
         int err;
 
-        priv = kmalloc (sizeof *priv, GFP_KERNEL);
+        priv = kzalloc (sizeof *priv, GFP_KERNEL);
         if (!priv)
                 return -ENOMEM;
-        memset(priv, 0, sizeof(struct parport_serial_private));
         pci_set_drvdata (dev, priv);
 
         err = pci_enable_device (dev);
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
index 6846fb42b399..ad90a01b0dfc 100644
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ b/drivers/pci/pcie/aer/aerdrv.c
@@ -148,11 +148,10 @@ static struct aer_rpc* aer_alloc_rpc(struct pcie_device *dev)
 {
         struct aer_rpc *rpc;
 
-        if (!(rpc = kmalloc(sizeof(struct aer_rpc),
+        if (!(rpc = kzalloc(sizeof(struct aer_rpc),
                 GFP_KERNEL)))
                 return NULL;
 
-        memset(rpc, 0, sizeof(struct aer_rpc));
         /*
          * Initialize Root lock access, e_lock, to Root Error Status Reg,
          * Root Error ID Reg, and Root error producer/consumer index.
diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c
index 3e20b1cc7778..8e7b2dd38810 100644
--- a/drivers/pnp/core.c
+++ b/drivers/pnp/core.c
@@ -35,12 +35,11 @@ void *pnp_alloc(long size)
 {
         void *result;
 
-        result = kmalloc(size, GFP_KERNEL);
+        result = kzalloc(size, GFP_KERNEL);
         if (!result){
                 printk(KERN_ERR "pnp: Out of Memory\n");
                 return NULL;
         }
-        memset(result, 0, size);
         return result;
 }
 
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
index f935c1f71a58..44420723a359 100644
--- a/drivers/rapidio/rio-scan.c
+++ b/drivers/rapidio/rio-scan.c
@@ -297,11 +297,10 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
         struct rio_switch *rswitch;
         int result, rdid;
 
-        rdev = kmalloc(sizeof(struct rio_dev), GFP_KERNEL);
+        rdev = kzalloc(sizeof(struct rio_dev), GFP_KERNEL);
         if (!rdev)
                 goto out;
 
-        memset(rdev, 0, sizeof(struct rio_dev));
         rdev->net = net;
         rio_mport_read_config_32(port, destid, hopcount, RIO_DEV_ID_CAR,
                                  &result);
@@ -801,9 +800,8 @@ static struct rio_net __devinit *rio_alloc_net(struct rio_mport *port)
 {
         struct rio_net *net;
 
-        net = kmalloc(sizeof(struct rio_net), GFP_KERNEL);
+        net = kzalloc(sizeof(struct rio_net), GFP_KERNEL);
         if (net) {
-                memset(net, 0, sizeof(struct rio_net));
                 INIT_LIST_HEAD(&net->node);
                 INIT_LIST_HEAD(&net->devices);
                 INIT_LIST_HEAD(&net->mports);
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index e765875e8db2..80e7a537e7d2 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -131,10 +131,9 @@ tape_34xx_schedule_work(struct tape_device *device, enum tape_op op)
 {
         struct tape_34xx_work *p;
 
-        if ((p = kmalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
+        if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
                 return -ENOMEM;
 
-        memset(p, 0, sizeof(*p));
         INIT_WORK(&p->work, tape_34xx_work_handler);
 
         p->device = tape_get_device_reference(device);
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 348bb7b82771..023455a0b34a 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -317,8 +317,8 @@ claw_probe(struct ccwgroup_device *cgdev)
                 CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM);
                 return -ENOMEM;
         }
-        privptr->p_mtc_envelope= kmalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL);
-        privptr->p_env = kmalloc(sizeof(struct claw_env), GFP_KERNEL);
+        privptr->p_mtc_envelope= kzalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL);
+        privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL);
         if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) {
                 probe_error(cgdev);
                 put_device(&cgdev->dev);
@@ -327,8 +327,6 @@ claw_probe(struct ccwgroup_device *cgdev)
                 CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM);
                 return -ENOMEM;
         }
-        memset(privptr->p_mtc_envelope, 0x00, MAX_ENVELOPE_SIZE);
-        memset(privptr->p_env, 0x00, sizeof(struct claw_env));
         memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8);
         memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8);
         memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8);
@@ -3924,7 +3922,7 @@ add_channel(struct ccw_device *cdev,int i,struct claw_privbk *privptr)
         snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", cdev->dev.bus_id);
         ccw_device_get_id(cdev, &dev_id);
         p_ch->devno = dev_id.devno;
-        if ((p_ch->irb = kmalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) {
+        if ((p_ch->irb = kzalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) {
                 printk(KERN_WARNING "%s Out of memory in %s for irb\n",
                         p_ch->id,__FUNCTION__);
 #ifdef FUNCTRACE
@@ -3933,7 +3931,6 @@ add_channel(struct ccw_device *cdev,int i,struct claw_privbk *privptr)
 #endif
                 return -ENOMEM;
         }
-        memset(p_ch->irb, 0, sizeof (struct irb));
 #ifdef FUNCTRACE
                 printk(KERN_INFO "%s:%s Exit on line %d\n",
                         cdev->dev.bus_id,__FUNCTION__,__LINE__);
diff --git a/drivers/sbus/char/bbc_i2c.c b/drivers/sbus/char/bbc_i2c.c
index 178155bf9db6..fbadd4d761f3 100644
--- a/drivers/sbus/char/bbc_i2c.c
+++ b/drivers/sbus/char/bbc_i2c.c
@@ -156,10 +156,9 @@ struct bbc_i2c_client *bbc_i2c_attach(struct linux_ebus_child *echild)
 
         if (!bp)
                 return NULL;
-        client = kmalloc(sizeof(*client), GFP_KERNEL);
+        client = kzalloc(sizeof(*client), GFP_KERNEL);
         if (!client)
                 return NULL;
-        memset(client, 0, sizeof(*client));
         client->bp = bp;
         client->echild = echild;
         client->bus = echild->resource[0].start;
diff --git a/drivers/sbus/char/vfc_dev.c b/drivers/sbus/char/vfc_dev.c
index 6afc7e5df0d4..26b1d2a17ed2 100644
--- a/drivers/sbus/char/vfc_dev.c
+++ b/drivers/sbus/char/vfc_dev.c
@@ -656,12 +656,9 @@ static int vfc_probe(void)
         if (!cards)
                 return -ENODEV;
 
-        vfc_dev_lst = kmalloc(sizeof(struct vfc_dev *) *
-                                                 (cards+1),
-                                                 GFP_KERNEL);
+        vfc_dev_lst = kcalloc(cards + 1, sizeof(struct vfc_dev*), GFP_KERNEL);
         if (vfc_dev_lst == NULL)
                 return -ENOMEM;
-        memset(vfc_dev_lst, 0, sizeof(struct vfc_dev *) * (cards + 1));
         vfc_dev_lst[cards] = NULL;
 
         ret = register_chrdev(VFC_MAJOR, vfcstr, &vfc_fops);
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index 76c09097175f..6b49f6a2524d 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -1160,13 +1160,12 @@ static int twa_initialize_device_extension(TW_Device_Extension *tw_dev)
         }
 
         /* Allocate event info space */
-        tw_dev->event_queue[0] = kmalloc(sizeof(TW_Event) * TW_Q_LENGTH, GFP_KERNEL);
+        tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL);
         if (!tw_dev->event_queue[0]) {
                 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed");
                 goto out;
         }
 
-        memset(tw_dev->event_queue[0], 0, sizeof(TW_Event) * TW_Q_LENGTH);
 
         for (i = 0; i < TW_Q_LENGTH; i++) {
                 tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
diff --git a/drivers/scsi/NCR53C9x.c b/drivers/scsi/NCR53C9x.c
index 8b5334c56f0a..773d11dd9953 100644
--- a/drivers/scsi/NCR53C9x.c
+++ b/drivers/scsi/NCR53C9x.c
@@ -3606,11 +3606,10 @@ out:
 int esp_slave_alloc(struct scsi_device *SDptr)
 {
         struct esp_device *esp_dev =
-                kmalloc(sizeof(struct esp_device), GFP_ATOMIC);
+                kzalloc(sizeof(struct esp_device), GFP_ATOMIC);
 
         if (!esp_dev)
                 return -ENOMEM;
-        memset(esp_dev, 0, sizeof(struct esp_device));
         SDptr->hostdata = esp_dev;
         return 0;
 }
diff --git a/drivers/scsi/NCR_D700.c b/drivers/scsi/NCR_D700.c
index f12864abed2f..3a8089705feb 100644
--- a/drivers/scsi/NCR_D700.c
+++ b/drivers/scsi/NCR_D700.c
@@ -181,13 +181,12 @@ NCR_D700_probe_one(struct NCR_D700_private *p, int siop, int irq,
         struct Scsi_Host *host;
         int ret;
 
-        hostdata = kmalloc(sizeof(*hostdata), GFP_KERNEL);
+        hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
         if (!hostdata) {
                 printk(KERN_ERR "NCR D700: SIOP%d: Failed to allocate host"
                        "data, detatching\n", siop);
                 return -ENOMEM;
         }
-        memset(hostdata, 0, sizeof(*hostdata));
 
         if (!request_region(region, 64, "NCR_D700")) {
                 printk(KERN_ERR "NCR D700: Failed to reserve IO region 0x%x\n",
diff --git a/drivers/scsi/NCR_Q720.c b/drivers/scsi/NCR_Q720.c
index 778844c3544a..a8bbdc2273b8 100644
--- a/drivers/scsi/NCR_Q720.c
+++ b/drivers/scsi/NCR_Q720.c
@@ -148,11 +148,10 @@ NCR_Q720_probe(struct device *dev)
         __u32 base_addr, mem_size;
         void __iomem *mem_base;
 
-        p = kmalloc(sizeof(*p), GFP_KERNEL);
+        p = kzalloc(sizeof(*p), GFP_KERNEL);
         if (!p)
                 return -ENOMEM;
 
-        memset(p, 0, sizeof(*p));
         pos2 = mca_device_read_pos(mca_dev, 2);
         /* enable device */
         pos2 |=  NCR_Q720_POS2_BOARD_ENABLE | NCR_Q720_POS2_INTERRUPT_ENABLE;
diff --git a/drivers/scsi/imm.c b/drivers/scsi/imm.c
index 0464c182c577..005d2b05f32d 100644
--- a/drivers/scsi/imm.c
+++ b/drivers/scsi/imm.c
@@ -1159,11 +1159,10 @@ static int __imm_attach(struct parport *pb)
 
         init_waitqueue_head(&waiting);
 
-        dev = kmalloc(sizeof(imm_struct), GFP_KERNEL);
+        dev = kzalloc(sizeof(imm_struct), GFP_KERNEL);
         if (!dev)
                 return -ENOMEM;
 
-        memset(dev, 0, sizeof(imm_struct));
 
         dev->base = -1;
         dev->mode = IMM_AUTODETECT;
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index 9f8ed6b81576..492a51bd6aa8 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -7068,14 +7068,13 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
         subdevice_id = pci_dev->subsystem_device;
 
         /* found a controller */
-        ha = kmalloc(sizeof (ips_ha_t), GFP_KERNEL);
+        ha = kzalloc(sizeof (ips_ha_t), GFP_KERNEL);
         if (ha == NULL) {
                 IPS_PRINTK(KERN_WARNING, pci_dev,
                            "Unable to allocate temporary ha struct\n");
                 return -1;
         }
 
-        memset(ha, 0, sizeof (ips_ha_t));
 
         ips_sh[index] = NULL;
         ips_ha[index] = ha;
diff --git a/drivers/scsi/lasi700.c b/drivers/scsi/lasi700.c
index 5c32a69e41ba..3126824da36d 100644
--- a/drivers/scsi/lasi700.c
+++ b/drivers/scsi/lasi700.c
@@ -101,13 +101,12 @@ lasi700_probe(struct parisc_device *dev)
         struct NCR_700_Host_Parameters *hostdata;
         struct Scsi_Host *host;
 
-        hostdata = kmalloc(sizeof(*hostdata), GFP_KERNEL);
+        hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
         if (!hostdata) {
                 printk(KERN_ERR "%s: Failed to allocate host data\n",
                        dev->dev.bus_id);
                 return -ENOMEM;
         }
-        memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
 
         hostdata->dev = &dev->dev;
         dma_set_mask(&dev->dev, DMA_32BIT_MASK);
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index f81f85ee190f..07bd0dcdf0d6 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -1830,7 +1830,7 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         /* Initialize and populate the iocb list per host.  */
         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
         for (i = 0; i < LPFC_IOCB_LIST_CNT; i++) {
-                iocbq_entry = kmalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
+                iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
                 if (iocbq_entry == NULL) {
                         printk(KERN_ERR "%s: only allocated %d iocbs of "
                                 "expected %d count. Unloading driver.\n",
@@ -1839,7 +1839,6 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
                         goto out_free_iocbq;
                 }
 
-                memset(iocbq_entry, 0, sizeof(struct lpfc_iocbq));
                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
                 if (iotag == 0) {
                         kfree (iocbq_entry);
diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c
index c46685a03a9f..c6a53dccc16a 100644
--- a/drivers/scsi/megaraid/megaraid_mbox.c
+++ b/drivers/scsi/megaraid/megaraid_mbox.c
@@ -454,7 +454,7 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
         pci_set_master(pdev);
 
         // Allocate the per driver initialization structure
-        adapter = kmalloc(sizeof(adapter_t), GFP_KERNEL);
+        adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL);
 
         if (adapter == NULL) {
                 con_log(CL_ANN, (KERN_WARNING
@@ -462,7 +462,6 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 
                 goto out_probe_one;
         }
-        memset(adapter, 0, sizeof(adapter_t));
 
 
         // set up PCI related soft state and other pre-known parameters
@@ -746,10 +745,9 @@ megaraid_init_mbox(adapter_t *adapter)
          * Allocate and initialize the init data structure for mailbox
          * controllers
          */
-        raid_dev = kmalloc(sizeof(mraid_device_t), GFP_KERNEL);
+        raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL);
         if (raid_dev == NULL) return -1;
 
-        memset(raid_dev, 0, sizeof(mraid_device_t));
 
         /*
          * Attach the adapter soft state to raid device soft state
@@ -1050,8 +1048,7 @@ megaraid_alloc_cmd_packets(adapter_t *adapter)
          * since the calling routine does not yet know the number of available
          * commands.
          */
-        adapter->kscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_SCSI_CMDS,
-                        GFP_KERNEL);
+        adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL);
 
         if (adapter->kscb_list == NULL) {
                 con_log(CL_ANN, (KERN_WARNING
@@ -1059,7 +1056,6 @@ megaraid_alloc_cmd_packets(adapter_t *adapter)
                         __LINE__));
                 goto out_free_ibuf;
         }
-        memset(adapter->kscb_list, 0, sizeof(scb_t) * MBOX_MAX_SCSI_CMDS);
 
         // memory allocation for our command packets
         if (megaraid_mbox_setup_dma_pools(adapter) != 0) {
@@ -3495,8 +3491,7 @@ megaraid_cmm_register(adapter_t *adapter)
         int             i;
 
         // Allocate memory for the base list of scb for management module.
-        adapter->uscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_USER_CMDS,
-                        GFP_KERNEL);
+        adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL);
 
         if (adapter->uscb_list == NULL) {
                 con_log(CL_ANN, (KERN_WARNING
@@ -3504,7 +3499,6 @@ megaraid_cmm_register(adapter_t *adapter)
                         __LINE__));
                 return -1;
         }
-        memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS);
 
 
         // Initialize the synchronization parameters for resources for
diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c
index 84d9c27133d4..b6587a6d8486 100644
--- a/drivers/scsi/megaraid/megaraid_mm.c
+++ b/drivers/scsi/megaraid/megaraid_mm.c
@@ -890,12 +890,11 @@ mraid_mm_register_adp(mraid_mmadp_t *lld_adp)
         if (lld_adp->drvr_type != DRVRTYPE_MBOX)
                 return (-EINVAL);
 
-        adapter = kmalloc(sizeof(mraid_mmadp_t), GFP_KERNEL);
+        adapter = kzalloc(sizeof(mraid_mmadp_t), GFP_KERNEL);
 
         if (!adapter)
                 return -ENOMEM;
 
-        memset(adapter, 0, sizeof(mraid_mmadp_t));
 
         adapter->unique_id      = lld_adp->unique_id;
         adapter->drvr_type      = lld_adp->drvr_type;
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index b7f2e613c903..ebb948c016bb 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -1636,15 +1636,13 @@ static int megasas_alloc_cmds(struct megasas_instance *instance)
          * Allocate the dynamic array first and then allocate individual
          * commands.
          */
-        instance->cmd_list = kmalloc(sizeof(struct megasas_cmd *) * max_cmd,
-                                     GFP_KERNEL);
+        instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
 
         if (!instance->cmd_list) {
                 printk(KERN_DEBUG "megasas: out of memory\n");
                 return -ENOMEM;
         }
 
-        memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) * max_cmd);
 
         for (i = 0; i < max_cmd; i++) {
                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
diff --git a/drivers/scsi/pcmcia/aha152x_stub.c b/drivers/scsi/pcmcia/aha152x_stub.c
index 370802d24acd..2dd0dc9a9aed 100644
--- a/drivers/scsi/pcmcia/aha152x_stub.c
+++ b/drivers/scsi/pcmcia/aha152x_stub.c
@@ -106,9 +106,8 @@ static int aha152x_probe(struct pcmcia_device *link)
     DEBUG(0, "aha152x_attach()\n");
 
     /* Create new SCSI device */
-    info = kmalloc(sizeof(*info), GFP_KERNEL);
+    info = kzalloc(sizeof(*info), GFP_KERNEL);
     if (!info) return -ENOMEM;
-    memset(info, 0, sizeof(*info));
     info->p_dev = link;
     link->priv = info;
 
diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c
index c6f8c6e65e05..445cfbbca9b3 100644
--- a/drivers/scsi/pcmcia/nsp_cs.c
+++ b/drivers/scsi/pcmcia/nsp_cs.c
@@ -1602,9 +1602,8 @@ static int nsp_cs_probe(struct pcmcia_device *link)
         nsp_dbg(NSP_DEBUG_INIT, "in");
 
         /* Create new SCSI device */
-        info = kmalloc(sizeof(*info), GFP_KERNEL);
+        info = kzalloc(sizeof(*info), GFP_KERNEL);
         if (info == NULL) { return -ENOMEM; }
-        memset(info, 0, sizeof(*info));
         info->p_dev = link;
         link->priv = info;
         data->ScsiInfo = info;
diff --git a/drivers/scsi/pcmcia/qlogic_stub.c b/drivers/scsi/pcmcia/qlogic_stub.c
index 697cfb76c3a4..67c5a58d17df 100644
--- a/drivers/scsi/pcmcia/qlogic_stub.c
+++ b/drivers/scsi/pcmcia/qlogic_stub.c
@@ -162,10 +162,9 @@ static int qlogic_probe(struct pcmcia_device *link)
         DEBUG(0, "qlogic_attach()\n");
 
         /* Create new SCSI device */
-        info = kmalloc(sizeof(*info), GFP_KERNEL);
+        info = kzalloc(sizeof(*info), GFP_KERNEL);
         if (!info)
                 return -ENOMEM;
-        memset(info, 0, sizeof(*info));
         info->p_dev = link;
         link->priv = info;
         link->io.NumPorts1 = 16;
diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c
index 2695b7187b2f..961839ecfe86 100644
--- a/drivers/scsi/pcmcia/sym53c500_cs.c
+++ b/drivers/scsi/pcmcia/sym53c500_cs.c
@@ -875,10 +875,9 @@ SYM53C500_probe(struct pcmcia_device *link)
         DEBUG(0, "SYM53C500_attach()\n");
 
         /* Create new SCSI device */
-        info = kmalloc(sizeof(*info), GFP_KERNEL);
+        info = kzalloc(sizeof(*info), GFP_KERNEL);
         if (!info)
                 return -ENOMEM;
-        memset(info, 0, sizeof(*info));
         info->p_dev = link;
         link->priv = info;
         link->io.NumPorts1 = 16;
diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c
index 2f1fa1eb7e90..67b6d76a6c8d 100644
--- a/drivers/scsi/ppa.c
+++ b/drivers/scsi/ppa.c
@@ -1014,10 +1014,9 @@ static int __ppa_attach(struct parport *pb)
         int modes, ppb, ppb_hi;
         int err = -ENOMEM;
 
-        dev = kmalloc(sizeof(ppa_struct), GFP_KERNEL);
+        dev = kzalloc(sizeof(ppa_struct), GFP_KERNEL);
         if (!dev)
                 return -ENOMEM;
-        memset(dev, 0, sizeof(ppa_struct));
         dev->base = -1;
         dev->mode = PPA_AUTODETECT;
         dev->recon_tmo = PPA_RECON_TMO;
diff --git a/drivers/scsi/sim710.c b/drivers/scsi/sim710.c
index 018c65f73ac4..710f19de3d40 100644
--- a/drivers/scsi/sim710.c
+++ b/drivers/scsi/sim710.c
@@ -100,7 +100,7 @@ sim710_probe_common(struct device *dev, unsigned long base_addr,
 {
         struct Scsi_Host * host = NULL;
         struct NCR_700_Host_Parameters *hostdata =
-                kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
+                kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
 
         printk(KERN_NOTICE "sim710: %s\n", dev->bus_id);
         printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
@@ -110,7 +110,6 @@ sim710_probe_common(struct device *dev, unsigned long base_addr,
                 printk(KERN_ERR "sim710: Failed to allocate host data\n");
                 goto out;
         }
-        memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
 
         if(request_region(base_addr, 64, "sim710") == NULL) {
                 printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c
index 14cba1ca38b3..5db1520f8ba9 100644
--- a/drivers/scsi/tmscsim.c
+++ b/drivers/scsi/tmscsim.c
@@ -2082,10 +2082,9 @@ static int dc390_slave_alloc(struct scsi_device *scsi_device)
         uint id = scsi_device->id;
         uint lun = scsi_device->lun;
 
-        pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
+        pDCB = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
         if (!pDCB)
                 return -ENOMEM;
-        memset(pDCB, 0, sizeof(struct dc390_dcb));
 
         if (!pACB->DCBCnt++) {
                 pACB->pLinkDCB = pDCB;
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 954073c6ce3a..72229df9dc11 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -716,7 +716,7 @@ static int pl011_probe(struct amba_device *dev, void *id)
                 goto out;
         }
 
-        uap = kmalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
+        uap = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
         if (uap == NULL) {
                 ret = -ENOMEM;
                 goto out;
@@ -728,7 +728,6 @@ static int pl011_probe(struct amba_device *dev, void *id)
                 goto free;
         }
 
-        memset(uap, 0, sizeof(struct uart_amba_port));
         uap->clk = clk_get(&dev->dev, "UARTCLK");
         if (IS_ERR(uap->clk)) {
                 ret = PTR_ERR(uap->clk);
diff --git a/drivers/sh/superhyway/superhyway.c b/drivers/sh/superhyway/superhyway.c
index 94b229031198..7d873b3b0513 100644
--- a/drivers/sh/superhyway/superhyway.c
+++ b/drivers/sh/superhyway/superhyway.c
@@ -56,11 +56,10 @@ int superhyway_add_device(unsigned long base, struct superhyway_device *sdev,
         struct superhyway_device *dev = sdev;
 
         if (!dev) {
-                dev = kmalloc(sizeof(struct superhyway_device), GFP_KERNEL);
+                dev = kzalloc(sizeof(struct superhyway_device), GFP_KERNEL);
                 if (!dev)
                         return -ENOMEM;
 
-                memset(dev, 0, sizeof(struct superhyway_device));
         }
 
         dev->bus = bus;
diff --git a/drivers/sn/ioc3.c b/drivers/sn/ioc3.c
index 2dd6eed50aa0..29fcd6d0301d 100644
--- a/drivers/sn/ioc3.c
+++ b/drivers/sn/ioc3.c
@@ -629,7 +629,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
 #endif
 
         /* Set up per-IOC3 data */
-        idd = kmalloc(sizeof(struct ioc3_driver_data), GFP_KERNEL);
+        idd = kzalloc(sizeof(struct ioc3_driver_data), GFP_KERNEL);
         if (!idd) {
                 printk(KERN_WARNING
                        "%s: Failed to allocate IOC3 data for pci_dev %s.\n",
@@ -637,7 +637,6 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
                 ret = -ENODEV;
                 goto out_idd;
         }
-        memset(idd, 0, sizeof(struct ioc3_driver_data));
         spin_lock_init(&idd->ir_lock);
         spin_lock_init(&idd->gpio_lock);
         idd->pdev = pdev;
diff --git a/drivers/telephony/ixj_pcmcia.c b/drivers/telephony/ixj_pcmcia.c
index 3e658dc7c2d8..ff9a29b76336 100644
--- a/drivers/telephony/ixj_pcmcia.c
+++ b/drivers/telephony/ixj_pcmcia.c
@@ -45,11 +45,10 @@ static int ixj_probe(struct pcmcia_device *p_dev)
         p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
         p_dev->io.IOAddrLines = 3;
         p_dev->conf.IntType = INT_MEMORY_AND_IO;
-        p_dev->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
+        p_dev->priv = kzalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
         if (!p_dev->priv) {
                 return -ENOMEM;
         }
-        memset(p_dev->priv, 0, sizeof(struct ixj_info_t));
 
         return ixj_config(p_dev);
 }
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index d6c5f1150ae7..349b8166f34a 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -1777,14 +1777,13 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id)
         }
 
         /* alloc, and start init */
-        dev = kmalloc (sizeof *dev, GFP_KERNEL);
+        dev = kzalloc (sizeof *dev, GFP_KERNEL);
         if (dev == NULL){
                 pr_debug("enomem %s\n", pci_name(pdev));
                 retval = -ENOMEM;
                 goto done;
         }
 
-        memset(dev, 0, sizeof *dev);
         spin_lock_init(&dev->lock);
         dev->pdev = pdev;
         dev->gadget.ops = &goku_ops;
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index dd33ff0ae4ce..38138bb9ddb0 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -1427,7 +1427,7 @@ static int __init gs_bind(struct usb_gadget *gadget)
                 gs_acm_config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
         }
 
-        gs_device = dev = kmalloc(sizeof(struct gs_dev), GFP_KERNEL);
+        gs_device = dev = kzalloc(sizeof(struct gs_dev), GFP_KERNEL);
         if (dev == NULL)
                 return -ENOMEM;
 
@@ -1435,7 +1435,6 @@ static int __init gs_bind(struct usb_gadget *gadget)
                 init_utsname()->sysname, init_utsname()->release,
                 gadget->name);
 
-        memset(dev, 0, sizeof(struct gs_dev));
         dev->dev_gadget = gadget;
         spin_lock_init(&dev->dev_lock);
         INIT_LIST_HEAD(&dev->dev_req_list);
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 2038125b7f8c..6edf4097d2d2 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -171,11 +171,10 @@ static int ohci_urb_enqueue (
         }
 
         /* allocate the private part of the URB */
-        urb_priv = kmalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
+        urb_priv = kzalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
                         mem_flags);
         if (!urb_priv)
                 return -ENOMEM;
-        memset (urb_priv, 0, sizeof (urb_priv_t) + size * sizeof (struct td *));
         INIT_LIST_HEAD (&urb_priv->pending);
         urb_priv->length = size;
         urb_priv->ed = ed;
diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c
index 2d0e73b20099..5da63f535005 100644
--- a/drivers/usb/host/sl811_cs.c
+++ b/drivers/usb/host/sl811_cs.c
@@ -278,10 +278,9 @@ static int sl811_cs_probe(struct pcmcia_device *link)
 {
         local_info_t *local;
 
-        local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
+        local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
         if (!local)
                 return -ENOMEM;
-        memset(local, 0, sizeof(local_info_t));
         local->p_dev = link;
         link->priv = local;
 
diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 6c9dc2e69c82..a7a1c891bfa2 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -447,13 +447,12 @@ static int clcdfb_probe(struct amba_device *dev, void *id)
                 goto out;
         }
 
-        fb = kmalloc(sizeof(struct clcd_fb), GFP_KERNEL);
+        fb = kzalloc(sizeof(struct clcd_fb), GFP_KERNEL);
         if (!fb) {
                 printk(KERN_INFO "CLCD: could not allocate new clcd_fb struct\n");
                 ret = -ENOMEM;
                 goto free_region;
         }
-        memset(fb, 0, sizeof(struct clcd_fb));
 
         fb->dev = dev;
         fb->board = board;
diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c
index ef330e34d031..0c7bf75732ea 100644
--- a/drivers/video/aty/atyfb_base.c
+++ b/drivers/video/aty/atyfb_base.c
@@ -2937,12 +2937,11 @@ static int __devinit atyfb_setup_sparc(struct pci_dev *pdev,
                 /* nothing */ ;
         j = i + 4;
 
-        par->mmap_map = kmalloc(j * sizeof(*par->mmap_map), GFP_ATOMIC);
+        par->mmap_map = kcalloc(j, sizeof(*par->mmap_map), GFP_ATOMIC);
         if (!par->mmap_map) {
                 PRINTKE("atyfb_setup_sparc() can't alloc mmap_map\n");
                 return -ENOMEM;
         }
-        memset(par->mmap_map, 0, j * sizeof(*par->mmap_map));
 
         for (i = 0, j = 2; i < 6 && pdev->resource[i].start; i++) {
                 struct resource *rp = &pdev->resource[i];
diff --git a/drivers/video/au1200fb.c b/drivers/video/au1200fb.c
index dbf4ec3f6d57..03e57ef88378 100644
--- a/drivers/video/au1200fb.c
+++ b/drivers/video/au1200fb.c
@@ -1589,11 +1589,10 @@ static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
                 return -EFAULT;
         }
 
-        fbi->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
+        fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
         if (!fbi->pseudo_palette) {
                 return -ENOMEM;
         }
-        memset(fbi->pseudo_palette, 0, sizeof(u32) * 16);
 
         if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
                 print_err("Fail to allocate colormap (%d entries)",
diff --git a/drivers/video/clps711xfb.c b/drivers/video/clps711xfb.c
index 50b78af0fa24..dea6579941b7 100644
--- a/drivers/video/clps711xfb.c
+++ b/drivers/video/clps711xfb.c
@@ -366,11 +366,10 @@ int __init clps711xfb_init(void)
         if (fb_get_options("clps711xfb", NULL))
                 return -ENODEV;
 
-        cfb = kmalloc(sizeof(*cfb), GFP_KERNEL);
+        cfb = kzalloc(sizeof(*cfb), GFP_KERNEL);
         if (!cfb)
                 goto out;
 
-        memset(cfb, 0, sizeof(*cfb));
         strcpy(cfb->fix.id, "clps711x");
 
         cfb->fbops              = &clps7111fb_ops;
diff --git a/drivers/video/cyber2000fb.c b/drivers/video/cyber2000fb.c
index 7a6eeda5ae9a..30ede6e8830f 100644
--- a/drivers/video/cyber2000fb.c
+++ b/drivers/video/cyber2000fb.c
@@ -1221,11 +1221,10 @@ cyberpro_alloc_fb_info(unsigned int id, char *name)
 {
         struct cfb_info *cfb;
 
-        cfb = kmalloc(sizeof(struct cfb_info), GFP_KERNEL);
+        cfb = kzalloc(sizeof(struct cfb_info), GFP_KERNEL);
         if (!cfb)
                 return NULL;
 
-        memset(cfb, 0, sizeof(struct cfb_info));
 
         cfb->id                 = id;
 
diff --git a/drivers/video/pvr2fb.c b/drivers/video/pvr2fb.c
index 0f88c30f94f8..f9300266044d 100644
--- a/drivers/video/pvr2fb.c
+++ b/drivers/video/pvr2fb.c
@@ -1082,13 +1082,12 @@ static int __init pvr2fb_init(void)
 #endif
         size = sizeof(struct fb_info) + sizeof(struct pvr2fb_par) + 16 * sizeof(u32);
 
-        fb_info = kmalloc(size, GFP_KERNEL);
+        fb_info = kzalloc(size, GFP_KERNEL);
         if (!fb_info) {
                 printk(KERN_ERR "Failed to allocate memory for fb_info\n");
                 return -ENOMEM;
         }
 
-        memset(fb_info, 0, size);
 
         currentpar = (struct pvr2fb_par *)(fb_info + 1);
 
diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c
index 3d7507ad55f6..b855f4a34afe 100644
--- a/drivers/video/savage/savagefb_driver.c
+++ b/drivers/video/savage/savagefb_driver.c
@@ -2174,11 +2174,10 @@ static int __devinit savage_init_fb_info(struct fb_info *info,
 
 #if defined(CONFIG_FB_SAVAGE_ACCEL)
         /* FIFO size + padding for commands */
-        info->pixmap.addr = kmalloc(8*1024, GFP_KERNEL);
+        info->pixmap.addr = kcalloc(8, 1024, GFP_KERNEL);
 
         err = -ENOMEM;
         if (info->pixmap.addr) {
-                memset(info->pixmap.addr, 0, 8*1024);
                 info->pixmap.size = 8*1024;
                 info->pixmap.scan_align = 4;
                 info->pixmap.buf_align = 4;
diff --git a/drivers/video/valkyriefb.c b/drivers/video/valkyriefb.c
index ad66f070acb8..7b0cef9ca8f9 100644
--- a/drivers/video/valkyriefb.c
+++ b/drivers/video/valkyriefb.c
@@ -356,10 +356,9 @@ int __init valkyriefb_init(void)
         }
 #endif /* ppc (!CONFIG_MAC) */
 
-        p = kmalloc(sizeof(*p), GFP_ATOMIC);
+        p = kzalloc(sizeof(*p), GFP_ATOMIC);
         if (p == 0)
                 return -ENOMEM;
-        memset(p, 0, sizeof(*p));
 
         /* Map in frame buffer and registers */
         if (!request_mem_region(frame_buffer_phys, 0x100000, "valkyriefb")) {
diff --git a/drivers/w1/masters/matrox_w1.c b/drivers/w1/masters/matrox_w1.c
index 6f9d880ab2e9..d356da5709fc 100644
--- a/drivers/w1/masters/matrox_w1.c
+++ b/drivers/w1/masters/matrox_w1.c
@@ -164,7 +164,7 @@ static int __devinit matrox_w1_probe(struct pci_dev *pdev, const struct pci_devi
         if (pdev->vendor != PCI_VENDOR_ID_MATROX || pdev->device != PCI_DEVICE_ID_MATROX_G400)
                 return -ENODEV;
 
-        dev = kmalloc(sizeof(struct matrox_device) +
+        dev = kzalloc(sizeof(struct matrox_device) +
                        sizeof(struct w1_bus_master), GFP_KERNEL);
         if (!dev) {
                 dev_err(&pdev->dev,
@@ -173,7 +173,6 @@ static int __devinit matrox_w1_probe(struct pci_dev *pdev, const struct pci_devi
                 return -ENOMEM;
         }
 
-        memset(dev, 0, sizeof(struct matrox_device) + sizeof(struct w1_bus_master));
 
         dev->bus_master = (struct w1_bus_master *)(dev + 1);
 
diff --git a/drivers/w1/slaves/w1_ds2433.c b/drivers/w1/slaves/w1_ds2433.c
index cab56005dd49..858c16a544c2 100644
--- a/drivers/w1/slaves/w1_ds2433.c
+++ b/drivers/w1/slaves/w1_ds2433.c
@@ -266,10 +266,9 @@ static int w1_f23_add_slave(struct w1_slave *sl)
 #ifdef CONFIG_W1_SLAVE_DS2433_CRC
         struct w1_f23_data *data;
 
-        data = kmalloc(sizeof(struct w1_f23_data), GFP_KERNEL);
+        data = kzalloc(sizeof(struct w1_f23_data), GFP_KERNEL);
         if (!data)
                 return -ENOMEM;
-        memset(data, 0, sizeof(struct w1_f23_data));
         sl->family_data = data;
 
 #endif  /* CONFIG_W1_SLAVE_DS2433_CRC */
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index c6332108f1c5..8d7ab74170d5 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -520,7 +520,7 @@ static int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn)
         int err;
         struct w1_netlink_msg msg;
 
-        sl = kmalloc(sizeof(struct w1_slave), GFP_KERNEL);
+        sl = kzalloc(sizeof(struct w1_slave), GFP_KERNEL);
         if (!sl) {
                 dev_err(&dev->dev,
                          "%s: failed to allocate new slave device.\n",
@@ -528,7 +528,6 @@ static int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn)
                 return -ENOMEM;
         }
 
-        memset(sl, 0, sizeof(*sl));
 
         sl->owner = THIS_MODULE;
         sl->master = dev;
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index 258defdb2efd..2fbd8dd16df5 100644
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -41,7 +41,7 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
         /*
          * We are in process context(kernel thread), so can sleep.
          */
-        dev = kmalloc(sizeof(struct w1_master) + sizeof(struct w1_bus_master), GFP_KERNEL);
+        dev = kzalloc(sizeof(struct w1_master) + sizeof(struct w1_bus_master), GFP_KERNEL);
         if (!dev) {
                 printk(KERN_ERR
                         "Failed to allocate %zd bytes for new w1 device.\n",
@@ -49,7 +49,6 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
                 return NULL;
         }
 
-        memset(dev, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
 
         dev->bus_master = (struct w1_bus_master *)(dev + 1);
 
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index f858fef6e41c..fb9e2ee998ae 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -39,9 +39,7 @@ char *allocate_lvb(struct dlm_ls *ls)
 {
         char *p;
 
-        p = kmalloc(ls->ls_lvblen, GFP_KERNEL);
-        if (p)
-                memset(p, 0, ls->ls_lvblen);
+        p = kzalloc(ls->ls_lvblen, GFP_KERNEL);
         return p;
 }
 
@@ -59,9 +57,7 @@ struct dlm_rsb *allocate_rsb(struct dlm_ls *ls, int namelen)
 
         DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
 
-        r = kmalloc(sizeof(*r) + namelen, GFP_KERNEL);
-        if (r)
-                memset(r, 0, sizeof(*r) + namelen);
+        r = kzalloc(sizeof(*r) + namelen, GFP_KERNEL);
         return r;
 }
 
@@ -101,9 +97,7 @@ struct dlm_direntry *allocate_direntry(struct dlm_ls *ls, int namelen)
         DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,
                    printk("namelen = %d\n", namelen););
 
-        de = kmalloc(sizeof(*de) + namelen, GFP_KERNEL);
-        if (de)
-                memset(de, 0, sizeof(*de) + namelen);
+        de = kzalloc(sizeof(*de) + namelen, GFP_KERNEL);
         return de;
 }
 
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 3eefa97fe204..a6b1072daea7 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -883,13 +883,11 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
                 goto failed_mount;
         }
         bgl_lock_init(&sbi->s_blockgroup_lock);
-        sbi->s_debts = kmalloc(sbi->s_groups_count * sizeof(*sbi->s_debts),
-                               GFP_KERNEL);
+        sbi->s_debts = kcalloc(sbi->s_groups_count, sizeof(*sbi->s_debts), GFP_KERNEL);
         if (!sbi->s_debts) {
                 printk ("EXT2-fs: not enough memory\n");
                 goto failed_mount_group_desc;
         }
-        memset(sbi->s_debts, 0, sbi->s_groups_count * sizeof(*sbi->s_debts));
         for (i = 0; i < db_count; i++) {
                 block = descriptor_loc(sb, logic_sb_block, i);
                 sbi->s_group_desc[i] = sb_bread(sb, block);
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 98e0b85a9bb2..783c57ec07d3 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -372,11 +372,10 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len,
 {
         struct hd_struct *p;
 
-        p = kmalloc(sizeof(*p), GFP_KERNEL);
+        p = kzalloc(sizeof(*p), GFP_KERNEL);
         if (!p)
                 return;
         
-        memset(p, 0, sizeof(*p));
         p->start_sect = start;
         p->nr_sects = len;
         p->partno = part;
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
index 3da9d73d1b52..27c7918e442a 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
@@ -177,7 +177,7 @@ static int ct_open(struct inode *inode, struct file *file)
         struct ct_iter_state *st;
         int ret;
 
-        st = kmalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
+        st = kzalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
         if (st == NULL)
                 return -ENOMEM;
         ret = seq_open(file, &ct_seq_ops);
@@ -185,7 +185,6 @@ static int ct_open(struct inode *inode, struct file *file)
                 goto out_free;
         seq          = file->private_data;
         seq->private = st;
-        memset(st, 0, sizeof(struct ct_iter_state));
         return ret;
 out_free:
         kfree(st);
diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/ieee80211_rate.c
index 16e850864b8a..2118de04fc35 100644
--- a/net/mac80211/ieee80211_rate.c
+++ b/net/mac80211/ieee80211_rate.c
@@ -24,11 +24,10 @@ int ieee80211_rate_control_register(struct rate_control_ops *ops)
 {
         struct rate_control_alg *alg;
 
-        alg = kmalloc(sizeof(*alg), GFP_KERNEL);
+        alg = kzalloc(sizeof(*alg), GFP_KERNEL);
         if (alg == NULL) {
                 return -ENOMEM;
         }
-        memset(alg, 0, sizeof(*alg));
         alg->ops = ops;
 
         mutex_lock(&rate_ctrl_mutex);
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index ba2bf8f0a347..22b11786327a 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1327,10 +1327,9 @@ ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid)
         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
         struct ieee80211_sta_bss *bss;
 
-        bss = kmalloc(sizeof(*bss), GFP_ATOMIC);
+        bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
         if (!bss)
                 return NULL;
-        memset(bss, 0, sizeof(*bss));
         atomic_inc(&bss->users);
         atomic_inc(&bss->users);
         memcpy(bss->bssid, bssid, ETH_ALEN);
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index ffb6ff8c3528..fc847cc63be6 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -198,7 +198,7 @@ static int ct_open(struct inode *inode, struct file *file)
         struct ct_iter_state *st;
         int ret;
 
-        st = kmalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
+        st = kzalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
         if (st == NULL)
                 return -ENOMEM;
         ret = seq_open(file, &ct_seq_ops);
@@ -206,7 +206,6 @@ static int ct_open(struct inode *inode, struct file *file)
                 goto out_free;
         seq          = file->private_data;
         seq->private = st;
-        memset(st, 0, sizeof(struct ct_iter_state));
         return ret;
 out_free:
         kfree(st);
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 9dfc9127acdd..d8473eefcd23 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -1052,12 +1052,11 @@ int tipc_nametbl_init(void)
 {
         int array_size = sizeof(struct hlist_head) * tipc_nametbl_size;
 
-        table.types = kmalloc(array_size, GFP_ATOMIC);
+        table.types = kzalloc(array_size, GFP_ATOMIC);
         if (!table.types)
                 return -ENOMEM;
 
         write_lock_bh(&tipc_nametbl_lock);
-        memset(table.types, 0, array_size);
         table.local_publ_count = 0;
         write_unlock_bh(&tipc_nametbl_lock);
         return 0;
diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
index 061a7c61402a..e11790f6debe 100644
--- a/sound/core/seq/seq_virmidi.c
+++ b/sound/core/seq/seq_virmidi.c
@@ -363,7 +363,7 @@ static int snd_virmidi_dev_attach_seq(struct snd_virmidi_dev *rdev)
         if (rdev->client >= 0)
                 return 0;
 
-        pinfo = kmalloc(sizeof(*pinfo), GFP_KERNEL);
+        pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL);
         if (!pinfo) {
                 err = -ENOMEM;
                 goto __error;
@@ -380,7 +380,6 @@ static int snd_virmidi_dev_attach_seq(struct snd_virmidi_dev *rdev)
         rdev->client = client;
 
         /* create a port */
-        memset(pinfo, 0, sizeof(*pinfo));
         pinfo->addr.client = client;
         sprintf(pinfo->name, "VirMIDI %d-%d", rdev->card->number, rdev->device);
         /* set all capabilities */