From: Andrey Panin <pazke@orbita.don.sitek.net>
To: Brian Gerst <bgerst@didntduck.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: IRQ conflicts
Date: Tue, 13 Feb 2001 12:44:00 +0300 [thread overview]
Message-ID: <20010213124400.A1860@debian> (raw)
In-Reply-To: <E14RfhV-0002A1-00@the-village.bc.nu> <3A85D79C.3DE3A527@didntduck.org>
In-Reply-To: <3A85D79C.3DE3A527@didntduck.org>; from bgerst@didntduck.org on Sat, Feb 10, 2001 at 07:06:52PM -0500
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On Sat, Feb 10, 2001 at 07:06:52PM -0500, Brian Gerst wrote:
> Alan Cox wrote:
> >
> > > <SoundBlaster EMU8000 (RAM2048k)>
> > > ACPI: Core Subsystem version [20010208]
> > > ACPI: SCI (IRQ9) allocation failed
> > > ACPI: Subsystem enable failed
> > > Trying to free free IRQ9
> >
> > That seems to indicate acpi is freeing a free irq. Turn ACPI off. Its a
> > good bet it will fix any random irq/driver problem right now
>
> Looking at this a bit further, I realised that when the sound driver was
> compiled in the kernel, it is initialised before ACPI. The BIOS has
> assigned IRQ9 to ACPI, but the PCI code does not know this because of:
>
> PCI: 00:07.3: class 604 doesn't match header type 00. Ignoring class.
>
> The ISAPnP code then assigns IRQ9 to the sound card, causing the ACPI
> code to fail to allocate it. If I compile sound as a module then the
> ACPI driver grabs IRQ9 and the sound get IRQ7.
>
Hi Brian,
please test this patch with ACPI enabled and sound driver compiled in kernel.
IMHO it should fix this problem.
Best regards.
--
Andrey Panin | Embedded systems software engineer
pazke@orbita1.ru | PGP key: http://www.orbita1.ru/~pazke/AndreyPanin.asc
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next prev parent reply other threads:[~2001-02-13 9:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-10 16:55 IRQ conflicts Brian Gerst
2001-02-10 17:26 ` Brian Gerst
2001-02-10 19:28 ` Alan Cox
2001-02-11 0:06 ` Brian Gerst
2001-02-13 9:44 ` Andrey Panin [this message]
2001-02-13 9:52 ` Andrey Panin
2001-02-13 22:51 ` Brian Gerst
-- strict thread matches above, loose matches on Subject: below --
2001-06-05 7:56 753 user
2001-06-05 12:52 753 user
2001-06-05 17:22 ` Alan Cox
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