[PATCH] x86-64: Lose constraints on cmpxchg

While only cosmetic for x86-64, this adjusts the cmpxchg code appearantly
inherited from i386 to use more generic constraints.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/asm-x86_64/system.h b/include/asm-x86_64/system.h
index d65381194bda..85348e02ad2e 100644
--- a/include/asm-x86_64/system.h
+++ b/include/asm-x86_64/system.h
@@ -253,19 +253,19 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
         case 2:
                 __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
                                      : "=a"(prev)
-                                     : "q"(new), "m"(*__xg(ptr)), "0"(old)
+                                     : "r"(new), "m"(*__xg(ptr)), "0"(old)
                                      : "memory");
                 return prev;
         case 4:
                 __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %k1,%2"
                                      : "=a"(prev)
-                                     : "q"(new), "m"(*__xg(ptr)), "0"(old)
+                                     : "r"(new), "m"(*__xg(ptr)), "0"(old)
                                      : "memory");
                 return prev;
         case 8:
                 __asm__ __volatile__(LOCK_PREFIX "cmpxchgq %1,%2"
                                      : "=a"(prev)
-                                     : "q"(new), "m"(*__xg(ptr)), "0"(old)
+                                     : "r"(new), "m"(*__xg(ptr)), "0"(old)
                                      : "memory");
                 return prev;
         }