ppc64: Fix nasty bug in cmpxchg where we would sign extend the old value.

4d8c3efd · Anton Blanchard · d7637891 · 4d8c3efd
Commit 4d8c3efd authored Feb 11, 2003 by Anton Blanchard
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include/asm-ppc64/system.h include/asm-ppc64/system.h +2 -2

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--- a/include/asm-ppc64/system.h
+++ b/include/asm-ppc64/system.h
@@ -196,7 +196,7 @@ __xchg(volatile void *ptr, unsigned long x, int size)
 static __inline__ unsigned long
 __cmpxchg_u32(volatile int *p, int old, int new)
 {
-	int prev;
+	unsigned int prev;
 	__asm__ __volatile__ (
 	EIEIO_ON_SMP
@@ -218,7 +218,7 @@ __cmpxchg_u32(volatile int *p, int old, int new)
 static __inline__ unsigned long
 __cmpxchg_u64(volatile long *p, unsigned long old, unsigned long new)
 {
-	int prev;
+	unsigned long prev;
 	__asm__ __volatile__ (
 	EIEIO_ON_SMP