diff options
| author | Anton Blanchard <anton@samba.org> | 2010-05-17 06:33:53 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-17 16:57:27 +0200 |
| commit | f3d46f9d3194e0329216002a8724d4c0957abc79 (patch) | |
| tree | 6d9413e4a448d7b8d342c40297c4fbe0b9c4c2f0 /arch/arm/include/asm/atomic.h | |
| parent | Linus 2.6.34 (diff) | |
| download | linux-f3d46f9d3194e0329216002a8724d4c0957abc79.tar.xz linux-f3d46f9d3194e0329216002a8724d4c0957abc79.zip | |
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 'arch/arm/include/asm/atomic.h')
| -rw-r--r-- | arch/arm/include/asm/atomic.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index e8ddec2cb158..a0162fa94564 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -24,7 +24,7 @@ * strex/ldrex monitor on some implementations. The reason we can use it for * atomic_set() is the clrex or dummy strex done on every exception return. */ -#define atomic_read(v) ((v)->counter) +#define atomic_read(v) (*(volatile int *)&(v)->counter) #define atomic_set(v,i) (((v)->counter) = (i)) #if __LINUX_ARM_ARCH__ >= 6 |