diff options
Diffstat (limited to 'include/linux/compiler.h')
-rw-r--r-- | include/linux/compiler.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 5d66777914db..05be2352fef8 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h | |||
@@ -250,7 +250,7 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s | |||
250 | ({ union { typeof(x) __val; char __c[1]; } __u; __read_once_size(&(x), __u.__c, sizeof(x)); __u.__val; }) | 250 | ({ union { typeof(x) __val; char __c[1]; } __u; __read_once_size(&(x), __u.__c, sizeof(x)); __u.__val; }) |
251 | 251 | ||
252 | #define WRITE_ONCE(x, val) \ | 252 | #define WRITE_ONCE(x, val) \ |
253 | ({ typeof(x) __val = (val); __write_once_size(&(x), &__val, sizeof(__val)); __val; }) | 253 | ({ union { typeof(x) __val; char __c[1]; } __u = { .__val = (val) }; __write_once_size(&(x), __u.__c, sizeof(x)); __u.__val; }) |
254 | 254 | ||
255 | /** | 255 | /** |
256 | * READ_ONCE_CTRL - Read a value heading a control dependency | 256 | * READ_ONCE_CTRL - Read a value heading a control dependency |
@@ -466,7 +466,7 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s | |||
466 | * with an explicit memory barrier or atomic instruction that provides the | 466 | * with an explicit memory barrier or atomic instruction that provides the |
467 | * required ordering. | 467 | * required ordering. |
468 | * | 468 | * |
469 | * If possible use READ_ONCE/ASSIGN_ONCE instead. | 469 | * If possible use READ_ONCE()/WRITE_ONCE() instead. |
470 | */ | 470 | */ |
471 | #define __ACCESS_ONCE(x) ({ \ | 471 | #define __ACCESS_ONCE(x) ({ \ |
472 | __maybe_unused typeof(x) __var = (__force typeof(x)) 0; \ | 472 | __maybe_unused typeof(x) __var = (__force typeof(x)) 0; \ |