sparc32: make __cmpxchg_u32() return u32

Conversion between u32 and unsigned long is tautological there,
and the only use of return value is to return it from
__cmpxchg() (which return unsigned long).

Get rid of explicit casts in __cmpxchg_u32() call, while we are
at it - normal conversions for arguments will do just fine.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
index cf80d1ae352b..d90d756123d8 100644
--- a/arch/sparc/lib/atomic32.c
+++ b/arch/sparc/lib/atomic32.c
@@ -159,7 +159,7 @@ unsigned long sp32___change_bit(unsigned long *addr, unsigned long mask)
 }
 EXPORT_SYMBOL(sp32___change_bit);
 
-unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
+u32 __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
 {
 	unsigned long flags;
 	u32 prev;
@@ -169,7 +169,7 @@ unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
 		*ptr = new;
 	spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
 
-	return (unsigned long)prev;
+	return prev;
 }
 EXPORT_SYMBOL(__cmpxchg_u32);