x86: SB450: skip IRQ0 override if it is not routed to INT2 of IOAPIC

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On some HP nx6... laptops (e.g. nx6325) BIOS reports an IRQ0 override
but the SB450 chipset is configured such that timer interrupts goe to
INT0 of IOAPIC.

Check IRQ0 routing and if it is routed to INT0 of IOAPIC skip the
timer override.

[ This more generic PCI ID based quirk should alleviate the need for
  dmi_ignore_irq0_timer_override DMI quirks. ]

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Acked-by: "Maciej W. Rozycki" <macro@linux-mips.org>
Tested-by: Dmitry Torokhov <dtor@mail.ru>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Andreas Herrmann 2008-10-07 00:11:22 +02:00 • committed by Ingo Molnar

parent 4330ed8ed4

commit 33fb0e4eb5

1 changed files with 48 additions and 0 deletions

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arch/x86/kernel/early-quirks.c

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