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atomic_t: Cast to volatile when accessing atomic variables

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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 <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Anton Blanchard 2010-05-17 14:33:53 +10:00 • committed by Linus Torvalds
commit f3d46f9d31
20 changed files with 25 additions and 25 deletions
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4
arch/parisc/include/asm/atomic.h
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@ -189,7 +189,7 @@ static __inline__ void atomic_set(atomic_t *v, int i)
static __inline__ int atomic_read(const atomic_t *v)
{
return v->counter;
return (*(volatile int *)&(v)->counter);
}
/* exported interface */
@ -286,7 +286,7 @@ atomic64_set(atomic64_t *v, s64 i)
static __inline__ s64
atomic64_read(const atomic64_t *v)
{
return v->counter;
return (*(volatile long *)&(v)->counter);
}
#define atomic64_add(i,v) ((void)(__atomic64_add_return( ((s64)(i)),(v))))