commit 6ec68bff3c81e776a455f6aca95c8c5f1d630198
author Andi Kleen <andi@firstfloor.org> Thu Feb 12 13:39:26 2009 +0100
committer H. Peter Anvin <hpa@linux.intel.com> Tue Feb 17 15:24:28 2009 -0800
tree 248b9c4dbb9271f7a8ad15b7103febefe877a79f
parent bf51935f3e988e0ed6f34b55593e5912f990750a

x86, mce: reinitialize per cpu features on resume

Impact: Bug fix

This fixes a long standing bug in the machine check code. On resume the
boot CPU wouldn't get its vendor specific state like thermal handling
reinitialized. This means the boot cpu wouldn't ever get any thermal
events reported again.

Call the respective initialization functions on resume

v2: Remove ancient init because they don't have a resume device anyways.
    Pointed out by Thomas Gleixner.
v3: Now fix the Subject too to reflect v2 change

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/kernel/cpu/mcheck/mce_64.c

diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index 1c83803..1f184ef 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -734,6 +734,7 @@
 static int mce_resume(struct sys_device *dev)
 {
 	mce_init(NULL);
+	mce_cpu_features(&current_cpu_data);
 	return 0;
 }