[PATCH] arm: it's OK to pass pointer to volatile as iounmap() argument...

1622605c · Al Viro <[email protected]> · 2006-10-09 02:09:49 +01:00

Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Changes

2 files changed · +4 −4

File	Status	Add	Del	Content
arch/arm/mm/ioremap.c	modified	+3	−3	View file
include/asm-arm/io.h	modified	+1	−1	View file

diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 591fc31..4654405 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -361,14 +361,14 @@ __ioremap(unsigned long phys_addr, size_t size, unsigned long flags)
 }
 EXPORT_SYMBOL(__ioremap);
 
-void __iounmap(void __iomem *addr)
+void __iounmap(volatile void __iomem *addr)
 {
 #ifndef CONFIG_SMP
 	struct vm_struct **p, *tmp;
 #endif
 	unsigned int section_mapping = 0;
 
-	addr = (void __iomem *)(PAGE_MASK & (unsigned long)addr);
+	addr = (volatile void __iomem *)(PAGE_MASK & (unsigned long)addr);
 
 #ifndef CONFIG_SMP
 	/*
@@ -395,6 +395,6 @@ void __iounmap(void __iomem *addr)
 #endif
 
 	if (!section_mapping)
-		vunmap(addr);
+		vunmap((void __force *)addr);
 }
 EXPORT_SYMBOL(__iounmap);

diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index 8076a85..34aaaac 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -63,7 +63,7 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
  */
 extern void __iomem * __ioremap_pfn(unsigned long, unsigned long, size_t, unsigned long);
 extern void __iomem * __ioremap(unsigned long, size_t, unsigned long);
-extern void __iounmap(void __iomem *addr);
+extern void __iounmap(volatile void __iomem *addr);
 
 /*
  * Bad read/write accesses...