1 files changed, 3 insertions, 2 deletions

diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h
index 0f636cbdf342..4236408070e5 100644
--- a/arch/s390/include/asm/cmpxchg.h
+++ b/arch/s390/include/asm/cmpxchg.h
@@ -185,11 +185,12 @@ static inline unsigned long long __cmpxchg64(void *ptr,
 {
         register_pair rp_old = {.pair = old};
         register_pair rp_new = {.pair = new};
+        unsigned long long *ullptr = ptr;
 
         asm volatile(
                 "       cds     %0,%2,%1"
-                : "+&d" (rp_old), "=Q" (ptr)
-                : "d" (rp_new), "Q" (ptr)
+                : "+d" (rp_old), "+Q" (*ullptr)
+                : "d" (rp_new)
                 : "memory", "cc");
         return rp_old.pair;
 }