Re: [PATCH] Chipset addition for the VIA Southbridge workaround /quirk

From: Andrew Morton
Date: Wed Sep 27 2006 - 20:02:19 EST

On Wed, 27 Sep 2006 23:05:25 +0200
Michiel de Boer <x@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> Hi, i'm (maybe unfortunately ;) the owner of a socket 370 motherboard
> by DFI. It's type number is CA63-EC REV A+. According to the manual
> this is the exact chipset naming:
> VIA 82C693A/82C686B AGPset
> Also built in is an Creative Labs SB Live! audio device. When i was
> still using windows 98, i experienced corruptions when burning DVD's,
> and after lengthy investigation i discovered i had a buggy southbridge.[1]
> Apparently the presence of the SB Live! audio device might even accelerate
> the problem, although it does not actually disappear when this PCI card
> is removed. When i moved to Linux, i decided that writing a kernel patch
> based on the fixup programs i found for windows 98 would be appropriate.
> However, i was pleased to discover that fixup code was already present in
> drivers/pci/quirks.c . The only thing i had to do then was add my mother-
> board identifier to the bottom of the code. The patch has been tried and
> tested since 2.6.8, and since then it has evolved since it turned out it
> contained unneccessary code patches. It has also been tested without
> problems on the user base of the distro Kanotix[2], of which i'm a
> co-developer. It activates as it should when it should, fixes the corrup-
> tions i had when burning DVD's, and improves system behavior.
> It's a very small and simple patch, but it would spare me from having
> to patch the kernel source myself it it were to be included.
> Regards, Michiel de Boer
> [1]
> [2]
> Credit: Stefan Lippers-Hollmann <s.l-h@xxxxxx>, for showing me the way
> around in the kernel sources.
> Signed-off-by: Michiel Lieuwe de Boer <x@xxxxxxxxxxxxxxxxxxxxxx>
> diff -Nru linux-2.6.18.orig/drivers/pci/quirks.c
> linux-2.6.18/drivers/pci/quirks.c
> --- linux-2.6.18.orig/drivers/pci/quirks.c 2006-09-20
> 05:42:06.000000000 +0200
> +++ linux-2.6.18/drivers/pci/quirks.c 2006-09-27 22:43:30.000000000 +0200
> @@ -172,6 +172,7 @@
> PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency );
> PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency );
> PCI_DEVICE_ID_VIA_8361, quirk_vialatency );
> PCI_DEVICE_ID_VIA_82C691_0, quirk_vialatency );

Could you please test 2.6.18-mm1, or simply

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