From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Date: Mon, 15 Jun 2009 08:18:45 +0000 (+0900)
Subject: x86, mce: don't init timer if !mce_available
X-Git-Tag: v2.6.32-rc1~651^2~41
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=33edbf02a92771fa2a81e41084a44ba874e3a5a5;p=profile%2Fivi%2Fkernel-x86-ivi.git

x86, mce: don't init timer if !mce_available

In mce_cpu_restart, mce_init_timer is called unconditionally.
If !mce_available (e.g. mce is disabled), there are no useful work
for timer.  Stop running it.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 19294b8..dda7721 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1617,8 +1617,9 @@ static int mce_resume(struct sys_device *dev)
 static void mce_cpu_restart(void *data)
 {
 	del_timer_sync(&__get_cpu_var(mce_timer));
-	if (mce_available(&current_cpu_data))
-		mce_init();
+	if (!mce_available(&current_cpu_data))
+		return;
+	mce_init();
 	mce_init_timer();
 }