diff options
| author | Anton Blanchard <anton@samba.org> | 2010-05-17 00:33:53 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-17 10:57:27 -0400 |
| commit | f3d46f9d3194e0329216002a8724d4c0957abc79 (patch) | |
| tree | 6d9413e4a448d7b8d342c40297c4fbe0b9c4c2f0 /include | |
| parent | e40152ee1e1c7a63f4777791863215e3faa37a86 (diff) | |
atomic_t: Cast to volatile when accessing atomic variables
In preparation for removing volatile from the atomic_t definition, this
patch adds a volatile cast to all the atomic read functions.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/atomic.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h index c99c64dc5f3d..c33749f95b32 100644 --- a/include/asm-generic/atomic.h +++ b/include/asm-generic/atomic.h | |||
| @@ -33,7 +33,7 @@ | |||
| 33 | * Atomically reads the value of @v. Note that the guaranteed | 33 | * Atomically reads the value of @v. Note that the guaranteed |
| 34 | * useful range of an atomic_t is only 24 bits. | 34 | * useful range of an atomic_t is only 24 bits. |
| 35 | */ | 35 | */ |
| 36 | #define atomic_read(v) ((v)->counter) | 36 | #define atomic_read(v) (*(volatile int *)&(v)->counter) |
| 37 | 37 | ||
| 38 | /** | 38 | /** |
| 39 | * atomic_set - set atomic variable | 39 | * atomic_set - set atomic variable |