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-rw-r--r--include/asm-blackfin/io.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-blackfin/io.h b/include/asm-blackfin/io.h
index eac8bcaf64c2..142cb333db29 100644
--- a/include/asm-blackfin/io.h
+++ b/include/asm-blackfin/io.h
@@ -20,7 +20,7 @@
*/
#ifndef __ASSEMBLY__
-static inline unsigned char readb(void __iomem *addr)
+static inline unsigned char readb(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
@@ -35,7 +35,7 @@ static inline unsigned char readb(void __iomem *addr)
return (unsigned char) val;
}
-static inline unsigned short readw(void __iomem *addr)
+static inline unsigned short readw(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
@@ -50,7 +50,7 @@ static inline unsigned short readw(void __iomem *addr)
return (unsigned short) val;
}
-static inline unsigned int readl(void __iomem *addr)
+static inline unsigned int readl(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;