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authorPranith Kumar <bobby.prani@gmail.com>2014-09-23 10:29:50 -0400
committerIngo Molnar <mingo@kernel.org>2014-10-03 06:06:23 +0200
commit2291059c852706c6f5ffb400366042b7625066cd (patch)
tree7827b5e7992bc0d3533d5832773c6be2f4221782 /arch/parisc/include/asm/atomic.h
parentda4c54457e6d8262423aded4bcbccc4103049506 (diff)
downloadlinux-2291059c852706c6f5ffb400366042b7625066cd.tar.gz
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/parisc/include/asm/atomic.h')
-rw-r--r--arch/parisc/include/asm/atomic.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index 219750bb4ae7..226f8ca993f6 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -67,7 +67,7 @@ static __inline__ void atomic_set(atomic_t *v, int i)
static __inline__ int atomic_read(const atomic_t *v)
{
- return (*(volatile int *)&(v)->counter);
+ return ACCESS_ONCE((v)->counter);
}
/* exported interface */
@@ -204,7 +204,7 @@ atomic64_set(atomic64_t *v, s64 i)
static __inline__ s64
atomic64_read(const atomic64_t *v)
{
- return (*(volatile long *)&(v)->counter);
+ return ACCESS_ONCE((v)->counter);
}
#define atomic64_inc(v) (atomic64_add( 1,(v)))