| commit | 05e407603e527f9d808dd3866d3a17c2ce4dfcc5 | [log] [tgz] |
|---|---|---|
| author | Daniel Kiper <[email protected]> | Fri Aug 20 00:46:16 2010 +0200 |
| committer | Ingo Molnar <[email protected]> | Fri Aug 20 10:18:28 2010 +0200 |
| tree | e6b6b956d70b1a9624b11b8d597559ca4b2a8cdf | |
| parent | d7c53c9e822a4fefa13a0cae76f3190bfd0d5c11 [diff] |
x86, apic: Fix apic=debug boot crash 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 <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: <[email protected]> # .35.x, .34.x, .33.x, .32.x LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 4dc0084..f1efeba 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c
@@ -1728,6 +1728,8 @@ struct irq_pin_list *entry; cfg = desc->chip_data; + if (!cfg) + continue; entry = cfg->irq_2_pin; if (!entry) continue;