linux-kernel - Re: [Regression, post-rc2] Commit a5ee4eb7541 breaks OpenGL on RS780 (was: Re: Linux 2.6.34-rc3)

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Date:	Thu, 1 Apr 2010 16:23:56 -0400
From:	Alex Deucher <alexdeucher@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Greg KH <gregkh@...e.de>, Clemens Ladisch <clemens@...isch.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	dri-devel@...ts.sourceforge.net, stable@...nel.org
Subject: Re: [Regression, post-rc2] Commit a5ee4eb7541 breaks OpenGL on RS780 
	(was: Re: Linux 2.6.34-rc3)

On Thu, Apr 1, 2010 at 4:17 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
>
> On Thu, 1 Apr 2010, Alex Deucher wrote:
>>
>> What I meant to say was MSI works fine on bridges other than the
>> bridge the internal gfx lives on.  quirk_disable_msi() just disables
>> MSI on the devices on that particular bridge as far as I understand
>> it, but I'm by no means an expert on the PCI code.
>
> Yes, it disabled MSI only on devices under that bridge. But if it's the
> northbridge, that would be everything, no?
>
> But I don't know what devices those
>
>        PCI_VENDOR_ID_AMD, 0x9602,
>        PCI_VENDOR_ID_ASUSTEK, 0x9602,
>
> things are. If they are just a PCIE->PCI bridge rather than the root
> bridge, then everything looks fine to me.
>

Yup, those are just the pci to pci bridges used for the internal gfx.
Really there's only one, 0x9602, but some asus oem boards have the
vendor id wrong.

>                        Linus
>
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