power: improve inline asm memory constraints
Use "+m" rather than a combination of "=m" and "m" for improved
clarity and consistency.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index d075725..c656951 100644
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -220,8 +220,8 @@
" stwcx. %3,0,%2 \n\
bne- 1b"
ISYNC_ON_SMP
- : "=&r" (prev), "=m" (*(volatile unsigned int *)p)
- : "r" (p), "r" (val), "m" (*(volatile unsigned int *)p)
+ : "=&r" (prev), "+m" (*(volatile unsigned int *)p)
+ : "r" (p), "r" (val)
: "cc", "memory");
return prev;
@@ -240,8 +240,8 @@
" stdcx. %3,0,%2 \n\
bne- 1b"
ISYNC_ON_SMP
- : "=&r" (prev), "=m" (*(volatile unsigned long *)p)
- : "r" (p), "r" (val), "m" (*(volatile unsigned long *)p)
+ : "=&r" (prev), "+m" (*(volatile unsigned long *)p)
+ : "r" (p), "r" (val)
: "cc", "memory");
return prev;
@@ -299,8 +299,8 @@
ISYNC_ON_SMP
"\n\
2:"
- : "=&r" (prev), "=m" (*p)
- : "r" (p), "r" (old), "r" (new), "m" (*p)
+ : "=&r" (prev), "+m" (*p)
+ : "r" (p), "r" (old), "r" (new)
: "cc", "memory");
return prev;
@@ -322,8 +322,8 @@
ISYNC_ON_SMP
"\n\
2:"
- : "=&r" (prev), "=m" (*p)
- : "r" (p), "r" (old), "r" (new), "m" (*p)
+ : "=&r" (prev), "+m" (*p)
+ : "r" (p), "r" (old), "r" (new)
: "cc", "memory");
return prev;