x86: ticket spin locks: fix asm constraints

In addition to these changes I doubt the 'volatile' on all the ticket
lock asm()-s are really necessary.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/asm-x86/spinlock.h b/include/asm-x86/spinlock.h
index 93adae338ac6..acd9bdda55cf 100644
--- a/include/asm-x86/spinlock.h
+++ b/include/asm-x86/spinlock.h
@@ -101,7 +101,7 @@ static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock)
                      "1:"
                      "sete %b1\n\t"
                      "movzbl %b1,%0\n\t"
-                     : "=&a" (tmp), "=Q" (new), "+m" (lock->slock)
+                     : "=&a" (tmp), "=&Q" (new), "+m" (lock->slock)
                      :
                      : "memory", "cc");
 
@@ -146,7 +146,7 @@ static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock)
                      /* don't need lfence here, because loads are in-order */
                      "jmp 1b\n"
                      "2:"
-                     : "+Q" (inc), "+m" (lock->slock), "=r" (tmp)
+                     : "+r" (inc), "+m" (lock->slock), "=&r" (tmp)
                      :
                      : "memory", "cc");
 }
@@ -166,7 +166,7 @@ static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock)
                      "1:"
                      "sete %b1\n\t"
                      "movzbl %b1,%0\n\t"
-                     : "=&a" (tmp), "=r" (new), "+m" (lock->slock)
+                     : "=&a" (tmp), "=&q" (new), "+m" (lock->slock)
                      :
                      : "memory", "cc");