tree 32541197bec435bb19e5db7e2f3d963c24784e58
parent 4330ed8ed4da360ac1ca14b0fddff4c05b10de16
author Andreas Herrmann <andreas.herrmann3@amd.com> 1223331082 +0200
committer Ingo Molnar <mingo@elte.hu> 1223354578 +0200

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

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>