ARM: Fix wrong dmb

The __kuser_cmpxchg code uses an ARMv6 dmb instruction, rather than one based upon the architecture being built for. Switch to using the macro provided for this purpose, which also eliminates the need for an ifdef. Acked-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
kyagi · Jan 12, 2010 · 7511bce · 7511bce
1 parent cc20b90
commit 7511bce
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
@@ -957,9 +957,7 @@ kuser_cmpxchg_fixup:
 
 #else
 
-#ifdef CONFIG_SMP
-	mcr	p15, 0, r0, c7, c10, 5	@ dmb
-#endif
+	smp_dmb
 1:	ldrex	r3, [r2]
 	subs	r3, r3, r0
 	strexeq	r3, r1, [r2]