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ARM: 7867/1: include: asm: use 'int' instead of 'unsigned long' for 'oldval' in atomic_cmpxchg().

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For atomic_cmpxchg(), the type of 'oldval' need be 'int' to match the
type of "*ptr" (used by 'ldrex' instruction) and 'old' (used by 'teq'
instruction).

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Chen Gang 2013-10-26 15:07:25 +01:00 committed by Russell King
parent 237f12337c
commit 4dcc1cf731
1 changed files with 2 additions and 1 deletions
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3
arch/arm/include/asm/atomic.h
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@ -114,7 +114,8 @@ static inline int atomic_sub_return(int i, atomic_t *v)
static inline int atomic_cmpxchg(atomic_t *ptr, int old, int new)
{
unsigned long oldval, res;
int oldval;
unsigned long res;
smp_mb();