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)

[[e-mail]: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau <[e-mail]>
Cc: Richard Henderson <[e-mail]>
Cc: Ivan Kokshaysky <[e-mail]>
Acked-by: Russell King <[e-mail]>
Cc: Bryan Wu <[e-mail]>
Acked-by: Jiri Slaby <[e-mail]>
Cc: Dave Airlie <[e-mail]>
Acked-by: Roland Dreier <[e-mail]>
Cc: Jiri Kosina <[e-mail]>
Acked-by: Dmitry Torokhov <[e-mail]>
Cc: Benjamin Herrenschmidt <[e-mail]>
Acked-by: Mauro Carvalho Chehab <[e-mail]>
Acked-by: Pierre Ossman <[e-mail]>
Cc: Jeff Garzik <[e-mail]>
Cc: "David S. Miller" <[e-mail]>
Acked-by: Greg KH <[e-mail]>
Cc: James Bottomley <[e-mail]>
Cc: "Antonino A. Daplas" <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

Documentation/connector/cn_test.c

···
 	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;

Documentation/filesystems/configfs/configfs_example.c

···
 {
 	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);
···
 {
 	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);

arch/alpha/kernel/module.c

···
 	}
 
 	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;

arch/arm/mach-iop13xx/pci.c

···
 	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

arch/blackfin/mm/blackfin_sram.c

···
 	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);

arch/cris/arch-v32/drivers/pci/dma.c

···
 	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;

arch/powerpc/kernel/lparcfg.c

···
 	} 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__);
···
 		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)) {

arch/powerpc/kernel/of_platform.c

···
 {
 	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;

block/scsi_ioctl.c

···
 
 	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);

drivers/block/sx8.c

···
 	}
 #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));
···
 		goto err_out_regions;
 	}
 
-	memset(host, 0, sizeof(*host));
 	host->pdev = pdev;
 	host->flags = pci_dac ? FL_DAC : 0;
 	spin_lock_init(&host->lock);

drivers/char/amiserial.c

···
 		*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);

drivers/char/drm/via_dmablit.c

···
 	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] = 

drivers/char/esp.c

···
 		return 1;
 	}
 
-	info = kmalloc(sizeof(struct esp_struct), GFP_KERNEL);
+	info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
 
 	if (!info)
 	{
···
 		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;
···
 		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"); 
···
 			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;

drivers/char/hvcs.c

···
 		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 */

drivers/char/ipmi/ipmi_msghandler.c

···
 			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);

drivers/char/pcmcia/synclink_cs.c

···
     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;

drivers/char/rio/rio_linux.c

···
 {
 	void *p;
 
-	p = kmalloc(size, GFP_KERNEL);
-	if (p)
-		memset(p, 0, size);
+	p = kzalloc(size, GFP_KERNEL);
 	return p;
 }
 

drivers/char/rio/riocmd.c

···
 {
 	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;
 }
 

drivers/char/rio/riotable.c

···
 		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;

drivers/char/rocket.c

···
 	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;

drivers/char/synclink.c

···
 {
 	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;

drivers/char/synclink_gt.c

···
 {
 	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;

drivers/char/synclinkmp.c

···
 {
 	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;

drivers/char/watchdog/mpcore_wdt.c

···
 		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);

drivers/char/watchdog/pcwd_usb.c

···
 	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;
 

drivers/ide/mips/swarm.c

···
 		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;

drivers/infiniband/core/addr.c

···
 	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));

drivers/infiniband/hw/cxgb3/iwch_cm.c

···
 {
 	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);

drivers/input/serio/ambakmi.c

···
 	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;

drivers/input/serio/pcips2.c

···
 	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;

drivers/input/serio/sa1111ps2.c

···
 	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;

drivers/macintosh/macio_asic.c

···
 	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;

drivers/macintosh/smu.c

···
 	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);

drivers/macintosh/therm_pm72.c

···
 	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;

drivers/macintosh/therm_windtunnel.c

···
 				     | 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;

drivers/macintosh/windfarm_lm75_sensor.c

···
 	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 ...

drivers/md/dm-raid1.c

···
 
 	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;

drivers/media/dvb/cinergyT2/cinergyT2.c

···
 	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);

drivers/media/video/cpia2/cpia2_core.c

···
 {
 	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);

drivers/media/video/msp3400-driver.c

···
 	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;

drivers/media/video/planb.c

···
 		* 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;

drivers/media/video/usbvideo/vicam.c

···
 	}
 
 	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;
 

drivers/mfd/mcp-core.c

···
 {
 	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;

drivers/mfd/ucb1x00-core.c

···
 		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;

drivers/misc/asus-laptop.c

···
 	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);

drivers/misc/ibmasm/command.c

···
 	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);

drivers/misc/ibmasm/ibmasmfs.c

···
 	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);

drivers/misc/ibmasm/module.c

···
 	/* 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);

drivers/mmc/card/block.c

···
 		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

drivers/net/b44.c

···
 	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);

drivers/net/bsd_comp.c

···
  * 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.

drivers/net/forcedeth.c

···
 			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;

drivers/net/hamradio/dmascc.c

···
 	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",
···
 		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]) {

drivers/net/irda/irport.c

···
 	
 	/* 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;
 

drivers/net/irda/irtty-sir.c

···
 	}
 
 	/* 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;

drivers/net/iseries_veth.c

···
 	     || ! 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);
···
 	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;

drivers/net/lance.c

···
 	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,

drivers/net/pcmcia/com20020_cs.c

···
     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;
 
···
     if (!dev)
 	goto fail_alloc_dev;
 
-    memset(info, 0, sizeof(struct com20020_dev_t));
     lp = dev->priv;
     lp->timeout = timeout;
     lp->backplane = backplane;

drivers/net/pcmcia/ibmtr_cs.c

···
     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);

drivers/net/ppp_async.c

···
 	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);

drivers/net/ppp_deflate.c

···
 	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());
···
 	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(),

drivers/net/ppp_mppe.c

···
 	    || 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)) {

drivers/net/ppp_synctty.c

···
 	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);

drivers/net/shaper.c

···
 		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++) {
 

drivers/net/wan/c101.c

···
 		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) {

drivers/net/wan/cosa.c

···
 	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;

drivers/net/wan/cycx_main.c

···
 	/* 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) {

drivers/net/wan/cycx_x25.c

···
 	}
 
 	/* 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;

drivers/net/wan/dscc4.c

···
 	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);
···
 			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);

drivers/net/wan/farsync.c

···
 	}
 
 	/* 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) {

drivers/net/wan/hostess_sv11.c

···
 		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);

drivers/net/wan/n2.c

···
 		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]);

drivers/net/wan/pc300_drv.c

···
 	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",
···
 		err = -ENOMEM;
 		goto err_disable_dev;
 	}
-	memset(card, 0, sizeof(pc300_t));
 
 	err = -ENODEV;
 

drivers/net/wan/pc300too.c

···
 		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 ||

drivers/net/wan/pci200syn.c

···
 		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]);

drivers/net/wan/sdla.c

···
 		
 	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))
 		{

drivers/net/wan/sealevel.c

···
 		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;
 

drivers/net/wan/wanxl.c

···
 	}
 
 	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));
···
 		pci_disable_device(pdev);
 		return -ENOBUFS;
 	}
-	memset(card, 0, alloc_size);
 
 	pci_set_drvdata(pdev, card);
 	card->pdev = pdev;

drivers/net/wan/x25_asy.c

···
 	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);
 }

drivers/nubus/nubus.c

···
 		       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;
···
 	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 */

drivers/parport/parport_cs.c

···
     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;
 

drivers/parport/parport_serial.c

···
 	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);

drivers/pci/pcie/aer/aerdrv.c

···
 {
 	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.

drivers/pnp/core.c

···
 {
 	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;
 }
 

drivers/rapidio/rio-scan.c

···
 	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);
···
 {
 	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);

drivers/s390/char/tape_34xx.c

···
 {
 	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);

drivers/s390/net/claw.c

···
 		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);
···
 		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);
···
 	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
···
 #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__);

drivers/sbus/char/bbc_i2c.c

···
 
 	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;

drivers/sbus/char/vfc_dev.c

···
 	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);

drivers/scsi/3w-9xxx.c

···
 	}
 
 	/* 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)));

drivers/scsi/NCR53C9x.c

···
 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;
 }

drivers/scsi/NCR_D700.c

···
 	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",

drivers/scsi/NCR_Q720.c

···
 	__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;

drivers/scsi/imm.c

···
 
 	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;

drivers/scsi/ips.c

···
 	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;

drivers/scsi/lasi700.c

···
 	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);

drivers/scsi/lpfc/lpfc_init.c

···
 	/* 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",
···
 			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);

drivers/scsi/megaraid/megaraid_mbox.c

···
 	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
···
 
 		goto out_probe_one;
 	}
-	memset(adapter, 0, sizeof(adapter_t));
 
 
 	// set up PCI related soft state and other pre-known parameters
···
 	 * 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
···
 	 * 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
···
 			__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) {
···
 	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
···
 			__LINE__));
 		return -1;
 	}
-	memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS);
 
 
 	// Initialize the synchronization parameters for resources for

drivers/scsi/megaraid/megaraid_mm.c

···
 	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;

drivers/scsi/megaraid/megaraid_sas.c

···
 	 * 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),

drivers/scsi/pcmcia/aha152x_stub.c

···
     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;
 

drivers/scsi/pcmcia/nsp_cs.c

···
 	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;

drivers/scsi/pcmcia/qlogic_stub.c

···
 	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;

drivers/scsi/pcmcia/sym53c500_cs.c

···
 	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;

drivers/scsi/ppa.c

···
 	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;

drivers/scsi/sim710.c

···
 {
 	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",
···
 		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",

drivers/scsi/tmscsim.c

···
 	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;

drivers/serial/amba-pl011.c

···
 		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;
···
 		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);

drivers/sh/superhyway/superhyway.c

···
 	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;

drivers/sn/ioc3.c

···
 #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",
···
 		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;

drivers/telephony/ixj_pcmcia.c

···
 	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);
 }

drivers/usb/gadget/goku_udc.c

···
 	}
 
 	/* 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;

drivers/usb/gadget/serial.c

···
 		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;
 
···
 		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);

drivers/usb/host/ohci-hcd.c

···
 	}
 
 	/* 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;

drivers/usb/host/sl811_cs.c

···
 {
 	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;
 

drivers/video/amba-clcd.c

···
 		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;

drivers/video/aty/atyfb_base.c

···
 		/* 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];

drivers/video/au1200fb.c

···
 		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)",

drivers/video/clps711xfb.c

···
 	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;

drivers/video/cyber2000fb.c

···
 {
 	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;
 

drivers/video/pvr2fb.c

···
 #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);
 

drivers/video/savage/savagefb_driver.c

···
 
 #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;

drivers/video/valkyriefb.c

···
 	}
 #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")) {

drivers/w1/masters/matrox_w1.c

···
 	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,
···
 		return -ENOMEM;
 	}
 
-	memset(dev, 0, sizeof(struct matrox_device) + sizeof(struct w1_bus_master));
 
 	dev->bus_master = (struct w1_bus_master *)(dev + 1);
 

drivers/w1/slaves/w1_ds2433.c

···
 #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 */

drivers/w1/w1.c

···
 	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",
···
 		return -ENOMEM;
 	}
 
-	memset(sl, 0, sizeof(*sl));
 
 	sl->owner = THIS_MODULE;
 	sl->master = dev;

drivers/w1/w1_int.c

···
 	/*
 	 * 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",
···
 		return NULL;
 	}
 
-	memset(dev, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
 
 	dev->bus_master = (struct w1_bus_master *)(dev + 1);
 

fs/dlm/memory.c

···
 {
 	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;
 }
 
···
 
 	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;
 }
 
···
 	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;
 }
 

fs/ext2/super.c

···
 		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);

fs/partitions/check.c

···
 {
 	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;

net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c

···
 	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);
···
 		goto out_free;
 	seq          = file->private_data;
 	seq->private = st;
-	memset(st, 0, sizeof(struct ct_iter_state));
 	return ret;
 out_free:
 	kfree(st);

net/mac80211/ieee80211_rate.c

···
 {
 	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);

net/mac80211/ieee80211_sta.c

···
 	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);

net/netfilter/nf_conntrack_standalone.c

···
 	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);
···
 		goto out_free;
 	seq          = file->private_data;
 	seq->private = st;
-	memset(st, 0, sizeof(struct ct_iter_state));
 	return ret;
 out_free:
 	kfree(st);

net/tipc/name_table.c

···
 {
 	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;

sound/core/seq/seq_virmidi.c

···
 	if (rdev->client >= 0)
 		return 0;
 
-	pinfo = kmalloc(sizeof(*pinfo), GFP_KERNEL);
+	pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL);
 	if (!pinfo) {
 		err = -ENOMEM;
 		goto __error;
···
 	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 */