powerpc: Fix a number of sparse warnings

Address some of the trivial sparse warnings in arch/powerpc.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

6 files changed, 11 insertions, 11 deletions

diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 0733b05eb85..af1c63fc7da 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -99,7 +99,7 @@ static int __init add_legacy_port(struct device_node *np, int want_index,
 		legacy_serial_count = index + 1;
 
 	/* Check if there is a port who already claimed our slot */
-	if (legacy_serial_infos[index].np != 0) {
+	if (legacy_serial_infos[index].np != NULL) {
 		/* if we still have some room, move it, else override */
 		if (legacy_serial_count < MAX_LEGACY_SERIAL_PORTS) {
 			printk(KERN_DEBUG "Moved legacy port %d -> %d\n",
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 7d22a675fe1..22fe40140e4 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -306,7 +306,7 @@ static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
 	unsigned long io_offset = 0;
 	int i, res_bit;
 
-	if (hose == 0)
+	if (hose == NULL)
 		return NULL;		/* should never happen */
 
 	/* If memory, add on the PCI bridge address offset */
@@ -1578,7 +1578,7 @@ fake_pci_bus(struct pci_controller *hose, int busnr)
 {
 	static struct pci_bus bus;
 
-	if (hose == 0) {
+	if (hose == NULL) {
 		printk(KERN_ERR "Can't find hose for PCI bus %d!\n", busnr);
 	}
 	bus.number = busnr;
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 2e8629654ca..cdf5aa1411b 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -109,7 +109,7 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
 	hose = pci_bus_to_host(bus);
 
 	/* Check if we have IOs allocated */
-	if (hose->io_base_alloc == 0)
+	if (hose->io_base_alloc == NULL)
 		return 0;
 
 	pr_debug("IO unmapping for PHB %s\n", hose->dn->full_name);
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index f03770e0fc8..79ba9b77fe7 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -325,7 +325,7 @@ static void __init initialize_cache_info(void)
 							 NULL);
 			if (lsizep != NULL)
 				lsize = *lsizep;
-			if (sizep == 0 || lsizep == 0)
+			if (sizep == NULL || lsizep == NULL)
 				DBG("Argh, can't find dcache properties ! "
 				    "sizep: %p, lsizep: %p\n", sizep, lsizep);
 
@@ -347,7 +347,7 @@ static void __init initialize_cache_info(void)
 							 NULL);
 			if (lsizep != NULL)
 				lsize = *lsizep;
-			if (sizep == 0 || lsizep == 0)
+			if (sizep == NULL || lsizep == NULL)
 				DBG("Argh, can't find icache properties ! "
 				    "sizep: %p, lsizep: %p\n", sizep, lsizep);
 
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index 887e99d85bc..cbd26928e04 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -346,13 +346,13 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
 	if (v_regs && !access_ok(VERIFY_READ, v_regs, 34 * sizeof(vector128)))
 		return -EFAULT;
 	/* Copy 33 vec registers (vr0..31 and vscr) from the stack */
-	if (v_regs != 0 && (msr & MSR_VEC) != 0)
+	if (v_regs != NULL && (msr & MSR_VEC) != 0)
 		err |= __copy_from_user(current->thread.vr, v_regs,
 					33 * sizeof(vector128));
 	else if (current->thread.used_vr)
 		memset(current->thread.vr, 0, 33 * sizeof(vector128));
 	/* Always get VRSAVE back */
-	if (v_regs != 0)
+	if (v_regs != NULL)
 		err |= __get_user(current->thread.vrsave, (u32 __user *)&v_regs[33]);
 	else
 		current->thread.vrsave = 0;
@@ -463,7 +463,7 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
 				    tm_v_regs, 34 * sizeof(vector128)))
 		return -EFAULT;
 	/* Copy 33 vec registers (vr0..31 and vscr) from the stack */
-	if (v_regs != 0 && tm_v_regs != 0 && (msr & MSR_VEC) != 0) {
+	if (v_regs != NULL && tm_v_regs != NULL && (msr & MSR_VEC) != 0) {
 		err |= __copy_from_user(current->thread.vr, v_regs,
 					33 * sizeof(vector128));
 		err |= __copy_from_user(current->thread.transact_vr, tm_v_regs,
@@ -474,7 +474,7 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
 		memset(current->thread.transact_vr, 0, 33 * sizeof(vector128));
 	}
 	/* Always get VRSAVE back */
-	if (v_regs != 0 && tm_v_regs != 0) {
+	if (v_regs != NULL && tm_v_regs != NULL) {
 		err |= __get_user(current->thread.vrsave,
 				  (u32 __user *)&v_regs[33]);
 		err |= __get_user(current->thread.transact_vrsave,
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 38b0ba65a73..9882240020c 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -172,7 +172,7 @@ int smp_request_message_ipi(int virq, int msg)
 #endif
 	err = request_irq(virq, smp_ipi_action[msg],
 			  IRQF_PERCPU | IRQF_NO_THREAD | IRQF_NO_SUSPEND,
-			  smp_ipi_name[msg], 0);
+			  smp_ipi_name[msg], NULL);
 	WARN(err < 0, "unable to request_irq %d for %s (rc %d)\n",
 		virq, smp_ipi_name[msg], err);