1 files changed, 1 insertions, 1 deletions

diff --git a/include/asm-x86_64/system.h b/include/asm-x86_64/system.h
index a73f0c789d8b..b7f66034ae7a 100644
--- a/include/asm-x86_64/system.h
+++ b/include/asm-x86_64/system.h
@@ -327,7 +327,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define wmb()   asm volatile("" ::: "memory")
 #endif
 #define read_barrier_depends()  do {} while(0)
-#define set_mb(var, value) do { xchg(&var, value); } while (0)
+#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)
 #define set_wmb(var, value) do { var = value; wmb(); } while (0)
 
 #define warn_if_not_ulong(x) do { unsigned long foo; (void) (&(x) == &foo); } while (0)