1 files changed, 1 insertions, 1 deletions

diff --git a/include/asm-mips/io.h b/include/asm-mips/io.h
index 6c0aae5151a6..5a4c8a54b8f4 100644
--- a/include/asm-mips/io.h
+++ b/include/asm-mips/io.h
@@ -342,7 +342,7 @@ static inline void pfx##write##bwlq(type val,				\
                 BUG();                                                  \
 }                                                                       \
                                                                         \
-static inline type pfx##read##bwlq(volatile void __iomem *mem)          \
+static inline type pfx##read##bwlq(const volatile void __iomem *mem)    \
 {                                                                       \
         volatile type *__mem;                                           \
         type __val;                                                     \