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-rw-r--r--arch/powerpc/atomic.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/atomic.h b/arch/powerpc/atomic.h
index d52ee0c6..05951a2d 100644
--- a/arch/powerpc/atomic.h
+++ b/arch/powerpc/atomic.h
@@ -31,7 +31,7 @@ static inline int a_cas(volatile int *p, int t, int s)
" stwcx. %3, 0, %1\n"
" bne- 1b\n"
"1: \n"
- : "=&r"(t) : "r"(p), "r"(t), "r"(s) : "cc", "memory" );
+ : "=&r"(t), "+m"(*p) : "r"(t), "r"(s) : "cc", "memory" );
return t;
}