From 7511bce4069de39ea04b14c1e1d55c249f9ce808 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 12 Jan 2010 18:59:16 +0000 Subject: [PATCH] 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 Signed-off-by: Russell King --- arch/arm/kernel/entry-armv.S | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index d2903e3bc861..6c5cf369183b 100644 --- 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] -- 2.20.1