Re: [PATCH] x86: SB450: skip IRQ0 override if it is not routed toINT2 of IOAPIC

[Ingo Molnar]

* Andreas Herrmann <andreas.herrmann3@xxxxxxx> wrote:

> So, let's work around BIOS bugs in Linux then ...
> 
> Following patch is almost untested -- especially I didn't get my hands 
> on one of the HP Laptops with broken DSDT.
[...]
> 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.
> 
> Signed-off-by: Andreas Herrmann <andreas.herrmann3@xxxxxxx>
>
> ---
>  arch/x86/kernel/early-quirks.c |   48 ++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 48 insertions(+), 0 deletions(-)

very nice, thanks Andreas! Applied to tip/x86/quirks. This PCI ID based 
quirk should be more complete than DMI matches.

	Ingo
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