1 files changed, 7 insertions, 3 deletions

diff --git a/include/asm-x86_64/spinlock.h b/include/asm-x86_64/spinlock.h
index 5d8a5e3589ff..8d3421996f94 100644
--- a/include/asm-x86_64/spinlock.h
+++ b/include/asm-x86_64/spinlock.h
@@ -31,15 +31,19 @@
         "jmp 1b\n" \
         LOCK_SECTION_END
 
+#define __raw_spin_lock_string_up \
+        "\n\tdecl %0"
+
 #define __raw_spin_unlock_string \
         "movl $1,%0" \
                 :"=m" (lock->slock) : : "memory"
 
 static inline void __raw_spin_lock(raw_spinlock_t *lock)
 {
-        __asm__ __volatile__(
-                __raw_spin_lock_string
-                :"=m" (lock->slock) : : "memory");
+        alternative_smp(
+                __raw_spin_lock_string,
+                __raw_spin_lock_string_up,
+                "=m" (lock->slock) : : "memory");
 }
 
 #define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)