linux-kernel - Re: [PATCH] x86: remove superfluous dmi_ignore_irq0_timer

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Message-ID: <20081022100337.GA13400@alberich.amd.com>
Date:	Wed, 22 Oct 2008 12:03:37 +0200
From:	Andreas Herrmann <andreas.herrmann3@....com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: remove superfluous dmi_ignore_irq0_timer_override
	quirks

On Thu, Oct 16, 2008 at 12:57:06PM +0200, Andreas Herrmann wrote:
> The problem should be solved with commits:
> 
> x86: SB600: skip IRQ0 override if it is not routed to INT2 of IOAPIC
> x86: SB450: skip IRQ0 override if it is not routed to INT2 of IOAPIC
> 
> IMHO it does not make sense to check within a dmi-quirk
> whether an early-quirk was applied. Boot sequence is as follows:
> 
> acpi_boot_table_init()   (it applies dmi-quirks)
> ...
> early_quirks()           (detect bogus IRQ0 override)
> ...
> acpi_boot_init()         (setup IO APIC)
> 
> Thus with current code we will always get following warnings for
> Laptops that have this dmi_ignore_irq0_timer_override dmi quirk:
> 
>   WARNING: at arch/x86/kernel/acpi/boot.c:1410
>   dmi_ignore_irq0_timer_override+0x30/0x60()
>   ati_ixp4x0 quirk not complete.
> 
> ... just because the early-quirk (ati_ixp4x0) was not yet executed.
> 

Hi Ingo,

How are chances that this patch will go into tip-tree?
I'd like to see this fix in 2.6.28.


Thanks,

Andreas


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