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| author | Pranith Kumar <bobby.prani@gmail.com> | 2014-09-23 10:29:50 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-10-03 06:06:23 +0200 |
| commit | 2291059c852706c6f5ffb400366042b7625066cd (patch) | |
| tree | 7827b5e7992bc0d3533d5832773c6be2f4221782 /arch/avr32 | |
| parent | da4c54457e6d8262423aded4bcbccc4103049506 (diff) | |
| download | lwn-2291059c852706c6f5ffb400366042b7625066cd.tar.gz lwn-2291059c852706c6f5ffb400366042b7625066cd.zip | |
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/avr32')
| -rw-r--r-- | arch/avr32/include/asm/atomic.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/avr32/include/asm/atomic.h b/arch/avr32/include/asm/atomic.h index 83e980a4e483..2d07ce1c5327 100644 --- a/arch/avr32/include/asm/atomic.h +++ b/arch/avr32/include/asm/atomic.h @@ -19,7 +19,7 @@ #define ATOMIC_INIT(i) { (i) } -#define atomic_read(v) (*(volatile int *)&(v)->counter) +#define atomic_read(v) ACCESS_ONCE((v)->counter) #define atomic_set(v, i) (((v)->counter) = i) #define ATOMIC_OP_RETURN(op, asm_op, asm_con) \ |