[PATCH] make WRITE_ONCE return void

[Alexey Dobriyan]

Currently WRITE_ONCE is used as if it returns void. Let's codify this
before somebody tries to be smarter than necessary.

Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
---

 include/linux/compiler.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -301,7 +301,7 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s
 	union { typeof(x) __val; char __c[1]; } __u =	\
 		{ .__val = (__force typeof(x)) (val) }; \
 	__write_once_size(&(x), __u.__c, sizeof(x));	\
-	__u.__val;					\
+	(void)0;					\
 })
 
 /**