diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index 2f9f9dfa66f..dfca014b49b 100644
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -355,8 +355,8 @@ asmlinkage int sys_execve(struct pt_regs *regs)
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename))
 		goto out;
-	error = do_execve(filename, (char __user **) regs->gr[25],
-		(char __user **) regs->gr[24], regs);
+	error = do_execve(filename, (char __user * __user *) regs->gr[25],
+		(char __user * __user *) regs->gr[24], regs);
 	if (error == 0) {
 		task_lock(current);
 		current->ptrace &= ~PT_DTRACE;
diff --git a/arch/parisc/oprofile/init.c b/arch/parisc/oprofile/init.c
index a5b898c4d0b..113f5139f55 100644
--- a/arch/parisc/oprofile/init.c
+++ b/arch/parisc/oprofile/init.c
@@ -18,6 +18,6 @@ int __init oprofile_arch_init(struct oprofile_operations * ops)
 }
 
 
-void oprofile_arch_exit()
+void oprofile_arch_exit(void)
 {
 }
diff --git a/drivers/parisc/iosapic_private.h b/drivers/parisc/iosapic_private.h
index 41e7ec2a44a..6e05e30a245 100644
--- a/drivers/parisc/iosapic_private.h
+++ b/drivers/parisc/iosapic_private.h
@@ -132,7 +132,7 @@ struct iosapic_irt {
 struct vector_info {
 	struct iosapic_info *iosapic;	/* I/O SAPIC this vector is on */
 	struct irt_entry *irte;		/* IRT entry */
-	u32	*eoi_addr;		/* precalculate EOI reg address */
+	u32 __iomem *eoi_addr;		/* precalculate EOI reg address */
 	u32	eoi_data;		/* IA64: ?       PA: swapped txn_data */
 	int	txn_irq;		/* virtual IRQ number for processor */
 	ulong	txn_addr;		/* IA64: id_eid  PA: partial HPA */
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index ba6769934c7..ad4a1a12a1a 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -980,7 +980,7 @@ LBA_PORT_IN(32, 0)
 #define LBA_PORT_OUT(size, mask) \
 static void lba_pat_out##size (struct pci_hba_data *l, u16 addr, u##size val) \
 { \
-	void *where = (void *) PIOP_TO_GMMIO(LBA_DEV(l), addr); \
+	void __iomem *where = PIOP_TO_GMMIO(LBA_DEV(l), addr); \
 	DBG_PORT("%s(0x%p, 0x%x, 0x%x)\n", __FUNCTION__, l, addr, val); \
 	WRITE_REG##size(val, where); \
 	/* flush the I/O down to the elroy at least */ \
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index f1e7ccd5475..41abbed51ea 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -846,7 +846,7 @@ static void *sba_alloc_consistent(struct device *hwdev, size_t size,
 	if (!hwdev) {
 		/* only support PCI */
 		*dma_handle = 0;
-		return 0;
+		return NULL;
 	}
 
         ret = (void *) __get_free_pages(gfp, get_order(size));