[PATCH] ARM: kuser: consistently use usr_ret for returning from helpers

[will.deacon@arm.com (Will Deacon)]

__kuser_cmpxchg64 has a return path using bx lr to get back to the caller.
This is actually ok since the code in question is predicated on
CONFIG_CPU_32v6K, but for the sake of consistency using the usr_ret
macro is probably better.

Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
 arch/arm/kernel/entry-armv.S |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 3a456c6..be16a48 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -790,7 +790,7 @@ __kuser_cmpxchg64:				@ 0xffff0f60
 	smp_dmb	arm
 	rsbs	r0, r3, #0			@ set returned val and C flag
 	ldmfd	sp!, {r4, r5, r6, r7}
-	bx	lr
+	usr_ret	lr
 
 #elif !defined(CONFIG_SMP)
 
-- 
1.7.4.1