[ARM] sparse: fix several warnings

arch/arm/kernel/process.c:270:6: warning: symbol 'show_fpregs' was not declared. Should it be static?

This function isn't used, so can be removed.

arch/arm/kernel/setup.c:532:9: warning: symbol 'len' shadows an earlier one
arch/arm/kernel/setup.c:524:6: originally declared here

A function containing two 'len's.

arch/arm/mm/fault-armv.c:188:13: warning: symbol 'check_writebuffer_bugs' was not declared. Should it be static?
arch/arm/mm/mmap.c:122:5: warning: symbol 'valid_phys_addr_range' was not declared. Should it be static?
arch/arm/mm/mmap.c:137:5: warning: symbol 'valid_mmap_phys_addr_range' was not declared. Should it be static?

Missing includes.

arch/arm/kernel/traps.c:71:77: warning: Using plain integer as NULL pointer
arch/arm/mm/ioremap.c:355:46: error: incompatible types in comparison expression (different address spaces)

Sillies.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 5 deletions

diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 20e4454e452e..52e5a4d28eb7 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -333,15 +333,14 @@ __arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 }
 EXPORT_SYMBOL(__arm_ioremap);
 
-void __iounmap(volatile void __iomem *addr)
+void __iounmap(volatile void __iomem *io_addr)
 {
+        void *addr = (void *)(PAGE_MASK & (unsigned long)io_addr);
 #ifndef CONFIG_SMP
         struct vm_struct **p, *tmp;
 #endif
         unsigned int section_mapping = 0;
 
-        addr = (volatile void __iomem *)(PAGE_MASK & (unsigned long)addr);
-
 #ifndef CONFIG_SMP
         /*
          * If this is a section based mapping we need to handle it
@@ -352,7 +351,7 @@ void __iounmap(volatile void __iomem *addr)
          */
         write_lock(&vmlist_lock);
         for (p = &vmlist ; (tmp = *p) ; p = &tmp->next) {
-                if((tmp->flags & VM_IOREMAP) && (tmp->addr == addr)) {
+                if ((tmp->flags & VM_IOREMAP) && (tmp->addr == addr)) {
                         if (tmp->flags & VM_ARM_SECTION_MAPPING) {
                                 *p = tmp->next;
                                 unmap_area_sections((unsigned long)tmp->addr,
@@ -367,6 +366,6 @@ void __iounmap(volatile void __iomem *addr)
 #endif
 
         if (!section_mapping)
-                vunmap((void __force *)addr);
+                vunmap(addr);
 }
 EXPORT_SYMBOL(__iounmap);