korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-16 00:34:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

x86, apic: Fix apic=debug boot crash

Browse Source 
Fix a boot crash when apic=debug is used and the APIC is
not properly initialized.

This issue appears during Xen Dom0 kernel boot but the
fix is generic and the crash could occur on real hardware
as well.

Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
Cc: xen-devel@lists.xensource.com
Cc: konrad.wilk@oracle.com
Cc: jeremy@goop.org
Cc: <stable@kernel.org> # .35.x, .34.x, .33.x, .32.x
LKML-Reference: <20100819224616.GB9967@router-fw-old.local.net-space.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Daniel Kiper 2010-08-20 00:46:16 +02:00 committed by Ingo Molnar
parent d7c53c9e82
commit 05e407603e
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/apic/io_apic.c
View File

@ -1728,6 +1728,8 @@ __apicdebuginit(void) print_IO_APIC(void)
struct irq_pin_list *entry;
cfg = desc->chip_data;
if (!cfg)
continue;
entry = cfg->irq_2_pin;
if (!entry)
continue;