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author | Pranith Kumar <bobby.prani@gmail.com> | 2014-09-23 10:29:50 -0400 |
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committer | Ingo Molnar <mingo@kernel.org> | 2014-10-03 06:06:23 +0200 |
commit | 2291059c852706c6f5ffb400366042b7625066cd (patch) | |
tree | 7827b5e7992bc0d3533d5832773c6be2f4221782 /arch/sparc/include/asm/atomic_32.h | |
parent | da4c54457e6d8262423aded4bcbccc4103049506 (diff) | |
download | linux-2291059c852706c6f5ffb400366042b7625066cd.tar.bz2 |
locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
Use the much more reader friendly ACCESS_ONCE() instead of the cast to volatile.
This is purely a stylistic change.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-arch@vger.kernel.org
Link: http://lkml.kernel.org/r/1411482607-20948-1-git-send-email-bobby.prani@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/sparc/include/asm/atomic_32.h')
-rw-r--r-- | arch/sparc/include/asm/atomic_32.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/include/asm/atomic_32.h b/arch/sparc/include/asm/atomic_32.h index 7b024f02a7ce..765c1776ec9f 100644 --- a/arch/sparc/include/asm/atomic_32.h +++ b/arch/sparc/include/asm/atomic_32.h @@ -26,7 +26,7 @@ int atomic_cmpxchg(atomic_t *, int, int); int __atomic_add_unless(atomic_t *, int, int); void atomic_set(atomic_t *, int); -#define atomic_read(v) (*(volatile int *)&(v)->counter) +#define atomic_read(v) ACCESS_ONCE((v)->counter) #define atomic_add(i, v) ((void)atomic_add_return( (int)(i), (v))) #define atomic_sub(i, v) ((void)atomic_add_return(-(int)(i), (v))) |