Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4a13ad...
Commit: 4a13ad0bd8869bb491c67918662f9b1852595af5
Parent: 5cca0cf15a94417f49625ce52e23589eed0a1675
Author: Jan Beulich <jbeulich@novell.com>
AuthorDate: Wed Jan 14 12:28:51 2009 +0000
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu Jan 15 23:48:19 2009 +0100
x86: avoid early crash in disable_local_APIC()
E.g. when called due to an early panic.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/apic.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 0f830e4..d19aa3a 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -895,6 +895,10 @@ void disable_local_APIC(void)
{
unsigned int value;
+ /* APIC hasn't been mapped yet */
+ if (!apic_phys)
+ return;
+
clear_local_APIC();
/*
--
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