x86: fix asm memory constraints in local_64.h

Use the shorter +m form rather than =m and m.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 14 insertions, 16 deletions

diff --git a/include/asm-x86/local_64.h b/include/asm-x86/local_64.h
index 92330f8135f8..50e99eddd628 100644
--- a/include/asm-x86/local_64.h
+++ b/include/asm-x86/local_64.h
@@ -5,32 +5,30 @@ static inline void local_inc(local_t *l)
 {
         __asm__ __volatile__(
                 "incq %0"
-                :"=m" (l->a.counter)
-                :"m" (l->a.counter));
+                :"+m" (l->a.counter));
 }
 
 static inline void local_dec(local_t *l)
 {
         __asm__ __volatile__(
                 "decq %0"
-                :"=m" (l->a.counter)
-                :"m" (l->a.counter));
+                :"+m" (l->a.counter));
 }
 
 static inline void local_add(long i, local_t *l)
 {
         __asm__ __volatile__(
                 "addq %1,%0"
-                :"=m" (l->a.counter)
-                :"ir" (i), "m" (l->a.counter));
+                :"+m" (l->a.counter)
+                :"ir" (i));
 }
 
 static inline void local_sub(long i, local_t *l)
 {
         __asm__ __volatile__(
                 "subq %1,%0"
-                :"=m" (l->a.counter)
-                :"ir" (i), "m" (l->a.counter));
+                :"+m" (l->a.counter)
+                :"ir" (i));
 }
 
 /**
@@ -48,8 +46,8 @@ static inline int local_sub_and_test(long i, local_t *l)
 
         __asm__ __volatile__(
                 "subq %2,%0; sete %1"
-                :"=m" (l->a.counter), "=qm" (c)
-                :"ir" (i), "m" (l->a.counter) : "memory");
+                :"+m" (l->a.counter), "=qm" (c)
+                :"ir" (i) : "memory");
         return c;
 }
 
@@ -67,8 +65,8 @@ static inline int local_dec_and_test(local_t *l)
 
         __asm__ __volatile__(
                 "decq %0; sete %1"
-                :"=m" (l->a.counter), "=qm" (c)
-                :"m" (l->a.counter) : "memory");
+                :"+m" (l->a.counter), "=qm" (c)
+                : : "memory");
         return c != 0;
 }
 
@@ -86,8 +84,8 @@ static inline int local_inc_and_test(local_t *l)
 
         __asm__ __volatile__(
                 "incq %0; sete %1"
-                :"=m" (l->a.counter), "=qm" (c)
-                :"m" (l->a.counter) : "memory");
+                :"+m" (l->a.counter), "=qm" (c)
+                : : "memory");
         return c != 0;
 }
 
@@ -106,8 +104,8 @@ static inline int local_add_negative(long i, local_t *l)
 
         __asm__ __volatile__(
                 "addq %2,%0; sets %1"
-                :"=m" (l->a.counter), "=qm" (c)
-                :"ir" (i), "m" (l->a.counter) : "memory");
+                :"+m" (l->a.counter), "=qm" (c)
+                :"ir" (i) : "memory");
         return c;
 }