Re: [PATCH] pci: enable MSI on 8132

[david]

On Wed, 18 Feb 2009, Andrew Morton wrote:

> Subject: Re: [PATCH] pci: enable MSI on 8132
>
> On Wed, 18 Feb 2009 04:27:28 -0800 (PST) david@xxxxxxx wrote:
>
> > On Wed, 18 Feb 2009, Matthew Wilcox wrote:
> >
> > > On Tue, Feb 17, 2009 at 08:40:09PM -0800, Yinghai Lu wrote:
> > > > Impact: workaround BIOS that doesn't enable that bit
> > > >
> > > > David reported that LSI sas doesn't work with MSI.
> > > > it turns out that BIOS doesn't enable HT MSI
> > > > 8132 does support HT MSI.
> > > > add quirk to enable it
> > > >
> > > > Reported-by: David Lang <david@xxxxxxx>
> > > > Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
> > >
> > > Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
> > >
> > > Jesse, I think this should go into Linus' tree sooner rather than later.
> >
> > please forward to -stable as well. this is a regression since the card
> > works with older kernels.
>
> Which kernel version introduced the regression?

I'm not sure. I know that 2.6.24 Debian EThch-and-a-half worked, 2.6.27+ 
failed. how critical is it to narrow down exactly where the problem crept 
in?

Yinghai Lu, Matthew Wilcox,
  can either of you identify where the problem would have appeared?

> Do we not need mpt-fix-enable-lsi-sas-to-use-msi-as-default.patch as
> well, to fix this regression?

I don't know. the current -git kernel fails, but with these two patches 
works. I haven't tried backporting these patches (if there are any changes 
at all needed I probably won't be able to do it)

David Lang

> I sent mpt-fix-enable-lsi-sas-to-use-msi-as-default.patch to the
> maintainers a week ago and it was ignored, along with everything else.
> If this happens again I shall merge it under my own cognisance, along
> with everything else.
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