[SPARC64]: kzalloc() conversion

this patch converts arch/sparc64 to kzalloc usage.
Crosscompile tested with allyesconfig.
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/ebus.c

@@ -277,10 +277,9 @@ static inline void *ebus_alloc(size_t size)
 {
 	void *mem;
 
-	mem = kmalloc(size, GFP_ATOMIC);
+	mem = kzalloc(size, GFP_ATOMIC);
 	if (!mem)
 		panic("ebus_alloc: out of memory");
-	memset((char *)mem, 0, size);
 	return mem;
 }
 

arch/sparc64/kernel/irq.c

@@ -316,12 +316,11 @@ unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long
 		goto out;
 	}
 
-	bucket->irq_info = kmalloc(sizeof(struct irq_desc), GFP_ATOMIC);
+	bucket->irq_info = kzalloc(sizeof(struct irq_desc), GFP_ATOMIC);
 	if (!bucket->irq_info) {
 		prom_printf("IRQ: Error, kmalloc(irq_desc) failed.\n");
 		prom_halt();
 	}
-	memset(bucket->irq_info, 0, sizeof(struct irq_desc));
 
 	/* Ok, looks good, set it up.  Don't touch the irq_chain or
 	 * the pending flag.
@@ -357,12 +356,11 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsign
 	bucket->pil = pil;
 	bucket->flags = flags;
 
-	bucket->irq_info = kmalloc(sizeof(struct irq_desc), GFP_ATOMIC);
+	bucket->irq_info = kzalloc(sizeof(struct irq_desc), GFP_ATOMIC);
 	if (!bucket->irq_info) {
 		prom_printf("IRQ: Error, kmalloc(irq_desc) failed.\n");
 		prom_halt();
 	}
-	memset(bucket->irq_info, 0, sizeof(struct irq_desc));
 
 	return __irq(bucket);
 }

arch/sparc64/kernel/pci_common.c

@@ -977,33 +977,30 @@ void pci_register_legacy_regions(struct resource *io_res,
 	struct resource *p;
 
 	/* VGA Video RAM. */
-	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p)
 		return;
 
-	memset(p, 0, sizeof(*p));
 	p->name = "Video RAM area";
 	p->start = mem_res->start + 0xa0000UL;
 	p->end = p->start + 0x1ffffUL;
 	p->flags = IORESOURCE_BUSY;
 	request_resource(mem_res, p);
 
-	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p)
 		return;
 
-	memset(p, 0, sizeof(*p));
 	p->name = "System ROM";
 	p->start = mem_res->start + 0xf0000UL;
 	p->end = p->start + 0xffffUL;
 	p->flags = IORESOURCE_BUSY;
 	request_resource(mem_res, p);
 
-	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p)
 		return;
 
-	memset(p, 0, sizeof(*p));
 	p->name = "Video ROM";
 	p->start = mem_res->start + 0xc0000UL;
 	p->end = p->start + 0x7fffUL;

arch/sparc64/kernel/pci_iommu.c

@@ -139,12 +139,11 @@ void pci_iommu_table_init(struct pci_iommu *iommu, int tsbsize, u32 dma_offset,
 	/* Allocate and initialize the free area map.  */
 	sz = num_tsb_entries / 8;
 	sz = (sz + 7UL) & ~7UL;
-	iommu->arena.map = kmalloc(sz, GFP_KERNEL);
+	iommu->arena.map = kzalloc(sz, GFP_KERNEL);
 	if (!iommu->arena.map) {
 		prom_printf("PCI_IOMMU: Error, kmalloc(arena.map) failed.\n");
 		prom_halt();
 	}
-	memset(iommu->arena.map, 0, sz);
 	iommu->arena.limit = num_tsb_entries;
 
 	/* Allocate and initialize the dummy page which we

arch/sparc64/kernel/pci_psycho.c

@@ -1164,7 +1164,7 @@ static void pbm_config_busmastering(struct pci_pbm_info *pbm)
 static void pbm_scan_bus(struct pci_controller_info *p,
 			 struct pci_pbm_info *pbm)
 {
-	struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL);
+	struct pcidev_cookie *cookie = kzalloc(sizeof(*cookie), GFP_KERNEL);
 
 	if (!cookie) {
 		prom_printf("PSYCHO: Critical allocation failure.\n");
@@ -1172,7 +1172,6 @@ static void pbm_scan_bus(struct pci_controller_info *p,
 	}
 
 	/* All we care about is the PBM. */
-	memset(cookie, 0, sizeof(*cookie));
 	cookie->pbm = pbm;
 
 	pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno,
@@ -1465,18 +1464,16 @@ void psycho_init(int node, char *model_name)
 		}
 	}
 
-	p = kmalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
+	p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
 	if (!p) {
 		prom_printf("PSYCHO: Fatal memory allocation error.\n");
 		prom_halt();
 	}
-	memset(p, 0, sizeof(*p));
-	iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+	iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
 	if (!iommu) {
 		prom_printf("PSYCHO: Fatal memory allocation error.\n");
 		prom_halt();
 	}
-	memset(iommu, 0, sizeof(*iommu));
 	p->pbm_A.iommu = p->pbm_B.iommu = iommu;
 
 	p->next = pci_controller_root;

arch/sparc64/kernel/pci_sabre.c

@@ -1167,7 +1167,7 @@ static void apb_init(struct pci_controller_info *p, struct pci_bus *sabre_bus)
 
 static struct pcidev_cookie *alloc_bridge_cookie(struct pci_pbm_info *pbm)
 {
-	struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL);
+	struct pcidev_cookie *cookie = kzalloc(sizeof(*cookie), GFP_KERNEL);
 
 	if (!cookie) {
 		prom_printf("SABRE: Critical allocation failure.\n");
@@ -1175,7 +1175,6 @@ static struct pcidev_cookie *alloc_bridge_cookie(struct pci_pbm_info *pbm)
 	}
 
 	/* All we care about is the PBM. */
-	memset(cookie, 0, sizeof(*cookie));
 	cookie->pbm = pbm;
 
 	return cookie;
@@ -1556,19 +1555,17 @@ void sabre_init(int pnode, char *model_name)
 		}
 	}
 
-	p = kmalloc(sizeof(*p), GFP_ATOMIC);
+	p = kzalloc(sizeof(*p), GFP_ATOMIC);
 	if (!p) {
 		prom_printf("SABRE: Error, kmalloc(pci_controller_info) failed.\n");
 		prom_halt();
 	}
-	memset(p, 0, sizeof(*p));
 
-	iommu = kmalloc(sizeof(*iommu), GFP_ATOMIC);
+	iommu = kzalloc(sizeof(*iommu), GFP_ATOMIC);
 	if (!iommu) {
 		prom_printf("SABRE: Error, kmalloc(pci_iommu) failed.\n");
 		prom_halt();
 	}
-	memset(iommu, 0, sizeof(*iommu));
 	p->pbm_A.iommu = p->pbm_B.iommu = iommu;
 
 	upa_portid = prom_getintdefault(pnode, "upa-portid", 0xff);

arch/sparc64/kernel/pci_schizo.c

@@ -1525,7 +1525,7 @@ static void pbm_config_busmastering(struct pci_pbm_info *pbm)
 static void pbm_scan_bus(struct pci_controller_info *p,
 			 struct pci_pbm_info *pbm)
 {
-	struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL);
+	struct pcidev_cookie *cookie = kzalloc(sizeof(*cookie), GFP_KERNEL);
 
 	if (!cookie) {
 		prom_printf("%s: Critical allocation failure.\n", pbm->name);
@@ -1533,7 +1533,6 @@ static void pbm_scan_bus(struct pci_controller_info *p,
 	}
 
 	/* All we care about is the PBM. */
-	memset(cookie, 0, sizeof(*cookie));
 	cookie->pbm = pbm;
 
 	pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno,
@@ -2120,27 +2119,24 @@ static void __schizo_init(int node, char *model_name, int chip_type)
 		}
 	}
 
-	p = kmalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
+	p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
 	if (!p) {
 		prom_printf("SCHIZO: Fatal memory allocation error.\n");
 		prom_halt();
 	}
-	memset(p, 0, sizeof(*p));
 
-	iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+	iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
 	if (!iommu) {
 		prom_printf("SCHIZO: Fatal memory allocation error.\n");
 		prom_halt();
 	}
-	memset(iommu, 0, sizeof(*iommu));
 	p->pbm_A.iommu = iommu;
 
-	iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+	iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
 	if (!iommu) {
 		prom_printf("SCHIZO: Fatal memory allocation error.\n");
 		prom_halt();
 	}
-	memset(iommu, 0, sizeof(*iommu));
 	p->pbm_B.iommu = iommu;
 
 	p->next = pci_controller_root;

arch/sparc64/kernel/setup.c

@@ -536,17 +536,13 @@ static int __init topology_init(void)
 	while (!cpu_find_by_instance(ncpus_probed, NULL, NULL))
 		ncpus_probed++;
 
-	for (i = 0; i < NR_CPUS; i++) {
-		if (cpu_possible(i)) {
-			struct cpu *p = kmalloc(sizeof(*p), GFP_KERNEL);
-
+	for_each_cpu(i) {
+		struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
 		if (p) {
-				memset(p, 0, sizeof(*p));
 			register_cpu(p, i, NULL);
 			err = 0;
 		}
 	}
-	}
 
 	return err;
 }

arch/sparc64/kernel/sys_sparc.c

@@ -600,12 +600,10 @@ asmlinkage long sys_utrap_install(utrap_entry_t type,
 	}
 	if (!current_thread_info()->utraps) {
 		current_thread_info()->utraps =
-			kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL);
+			kzalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL);
 		if (!current_thread_info()->utraps)
 			return -ENOMEM;
 		current_thread_info()->utraps[0] = 1;
-		memset(current_thread_info()->utraps+1, 0,
-		       UT_TRAP_INSTRUCTION_31*sizeof(long));
 	} else {
 		if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p &&
 		    current_thread_info()->utraps[0] > 1) {

arch/sparc64/kernel/us2e_cpufreq.c

@@ -357,20 +357,16 @@ static int __init us2e_freq_init(void)
 		struct cpufreq_driver *driver;
 
 		ret = -ENOMEM;
-		driver = kmalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
+		driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
 		if (!driver)
 			goto err_out;
-		memset(driver, 0, sizeof(*driver));
 
-		us2e_freq_table = kmalloc(
+		us2e_freq_table = kzalloc(
 			(NR_CPUS * sizeof(struct us2e_freq_percpu_info)),
 			GFP_KERNEL);
 		if (!us2e_freq_table)
 			goto err_out;
 
-		memset(us2e_freq_table, 0,
-		       (NR_CPUS * sizeof(struct us2e_freq_percpu_info)));
-
 		driver->init = us2e_freq_cpu_init;
 		driver->verify = us2e_freq_verify;
 		driver->target = us2e_freq_target;

arch/sparc64/kernel/us3_cpufreq.c

@@ -218,20 +218,16 @@ static int __init us3_freq_init(void)
 		struct cpufreq_driver *driver;
 
 		ret = -ENOMEM;
-		driver = kmalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
+		driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
 		if (!driver)
 			goto err_out;
-		memset(driver, 0, sizeof(*driver));
 
-		us3_freq_table = kmalloc(
+		us3_freq_table = kzalloc(
 			(NR_CPUS * sizeof(struct us3_freq_percpu_info)),
 			GFP_KERNEL);
 		if (!us3_freq_table)
 			goto err_out;
 
-		memset(us3_freq_table, 0,
-		       (NR_CPUS * sizeof(struct us3_freq_percpu_info)));
-
 		driver->init = us3_freq_cpu_init;
 		driver->verify = us3_freq_verify;
 		driver->target = us3_freq_target;