From cc20d42986d5807cbe4f5c7c8e3dab2e59ea0db3 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Mon, 9 Nov 2009 23:53:29 +0000
Subject: ARM: Use a definition for the userspace cmpxchg emulation syscall

Use a definition for the cmpxchg SWI instead of hard-coding the number.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
---
 arch/arm/kernel/entry-armv.S | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'arch/arm/kernel/entry-armv.S')

diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 0022b4d..d2903e3 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -21,6 +21,7 @@
 #include <mach/entry-macro.S>
 #include <asm/thread_notify.h>
 #include <asm/unwind.h>
+#include <asm/unistd.h>
 
 #include "entry-header.S"
 
@@ -908,10 +909,10 @@ __kuser_cmpxchg:				@ 0xffff0fc0
 	 * A special ghost syscall is used for that (see traps.c).
 	 */
 	stmfd	sp!, {r7, lr}
-	mov	r7, #0xff00		@ 0xfff0 into r7 for EABI
-	orr	r7, r7, #0xf0
-	swi	#0x9ffff0
+	ldr	r7, =1f			@ it's 20 bits
+	swi	__ARM_NR_cmpxchg
 	ldmfd	sp!, {r7, pc}
+1:	.word	__ARM_NR_cmpxchg
 
 #elif __LINUX_ARM_ARCH__ < 6
 
-- 
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