[src/trunk]: src/sys/arch/arm/arm Add missing volatile for hidden side effect...

[joerg <joerg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d97860c36ce9
branches:  trunk
changeset: 325721:d97860c36ce9
user:      joerg <joerg%NetBSD.org@localhost>
date:      Sat Jan 04 02:58:38 2014 +0000

description:
Add missing volatile for hidden side effects of asm.

diffstat:

 sys/arch/arm/arm/cpufunc.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r c442f636e7e8 -r d97860c36ce9 sys/arch/arm/arm/cpufunc.c
--- a/sys/arch/arm/arm/cpufunc.c        Sat Jan 04 02:57:50 2014 +0000
+++ b/sys/arch/arm/arm/cpufunc.c        Sat Jan 04 02:58:38 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpufunc.c,v 1.132 2013/12/20 06:48:09 matt Exp $       */
+/*     $NetBSD: cpufunc.c,v 1.133 2014/01/04 02:58:38 joerg Exp $      */
 
 /*
  * arm7tdmi support code Copyright (c) 2001 John Fremlin
@@ -49,7 +49,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpufunc.c,v 1.132 2013/12/20 06:48:09 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpufunc.c,v 1.133 2014/01/04 02:58:38 joerg Exp $");
 
 #include "opt_compat_netbsd.h"
 #include "opt_cpuoptions.h"
@@ -3249,7 +3249,7 @@
         * enable clockswitching, note that this doesn't read or write to r0,
         * r0 is just to make it valid asm
         */
-       __asm ("mcr 15, 0, r0, c15, c1, 2");
+       __asm volatile ("mcr 15, 0, r0, c15, c1, 2");
 }
 #endif /* CPU_SA110 */