diff options
| author | Kevin Hilman <khilman@linaro.org> | 2015-07-06 10:23:00 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2015-07-06 10:23:00 -0700 |
| commit | 6a47a12fee7d1e842369798dc8134759561d5e75 (patch) | |
| tree | 14fec57680c2fbc8dc05376b5c14bf57996dc86f /include/linux/compiler.h | |
| parent | 91760bceff1f3f5860ff49c14194567f972352e6 (diff) | |
| parent | ea5dd38e93b3bec3427e5d3eef000bbf5d637e76 (diff) | |
Merge tag 'v3.18.17' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into linux-linaro-lsk-v3.18lsk-v3.18-15.07
Linux 3.18.17
Diffstat (limited to 'include/linux/compiler.h')
| -rw-r--r-- | include/linux/compiler.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 33063f872ee3..000c5f90f08c 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -198,7 +198,7 @@ static __always_inline void data_access_exceeds_word_size(void) { } -static __always_inline void __read_once_size(volatile void *p, void *res, int size) +static __always_inline void __read_once_size(const volatile void *p, void *res, int size) { switch (size) { case 1: *(__u8 *)res = *(volatile __u8 *)p; break; @@ -255,10 +255,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s */ #define READ_ONCE(x) \ - ({ typeof(x) __val; __read_once_size(&x, &__val, sizeof(__val)); __val; }) + ({ union { typeof(x) __val; char __c[1]; } __u; __read_once_size(&(x), __u.__c, sizeof(x)); __u.__val; }) #define WRITE_ONCE(x, val) \ - ({ typeof(x) __val; __val = val; __write_once_size(&x, &__val, sizeof(__val)); __val; }) + ({ typeof(x) __val = (val); __write_once_size(&(x), &__val, sizeof(__val)); __val; }) #endif /* __KERNEL__ */ |