netdev - Re: Problem with atl1 and msi in kernel 2.6.22-rc3

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Message-ID: <20070530064711.570162f1@osprey.hogchain.net>
Date:	Wed, 30 May 2007 06:47:11 -0500
From:	Jay Cliburn <jacliburn@...lsouth.net>
To:	Jose Alberto Reguero <jareguero@...efonica.net>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	greg@...ah.com
Subject: Re: Problem with atl1 and msi in kernel 2.6.22-rc3

On Wed, 30 May 2007 02:00:25 +0200
Jose Alberto Reguero <jareguero@...efonica.net> wrote:

> I have problems with a M2V motherboard and atl1 driver with msi and
> kernel 2.6.22-rc3. With kernel 2.6.21 I had no problems.
> I must add in drivers/pci/quirks.c (line 1723):
> 
>  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, 
> quirk_disable_msi);
> +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xe238,
> quirk_disable_msi);
> 
> to disable msi in the atl1.

See http://bugzilla.kernel.org/show_bug.cgi?id=8472.

A more general solution is to disable MSI for the VIA VT3351 (used by
the Asus M2V).  I attempted to do this in the -stable tree with
http://lkml.org/lkml/2007/5/26/167, but it was shot down because the
patch isn't upstream yet.

Unfortunately, I can't submit it upstream because the enabling
patch hasn't yet been applied upstream by the PCI maintainer. My
request for info on the status of the patch went unanswered.
http://lkml.org/lkml/2007/5/19/74

The enabling patch was submitted by Tejun Heo 9 May.
http://lkml.org/lkml/2007/5/9/213

It was applied to -stable (2.6.21.2) 23 May.
http://lkml.org/lkml/2007/5/23/385

It has not yet been applied upstream.  When it is, I'll push the atl1
MSI patch.

Jay

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