[PATCH 3.10 25/51] ARM: 7867/1: include: asm: use int instead of unsigned long for oldval in atomic_cmpxchg().

[Greg Kroah-Hartman]

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chen Gang <gang.chen@xxxxxxxxxxx>

commit 4dcc1cf7316a26e112f5c9fcca531ff98ef44700 upstream.

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@xxxxxxx>
Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Cc: Hou Pengyang <houpengyang@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/arm/include/asm/atomic.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -114,7 +114,8 @@ static inline int atomic_sub_return(int
 
 static inline int atomic_cmpxchg(atomic_t *ptr, int old, int new)
 {
-	unsigned long oldval, res;
+	int oldval;
+	unsigned long res;
 
 	smp_mb();
 


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