Re: S3 resume broken in 2.6.7

[Andi Kleen <ak-l3A5Bk7waGM@public.gmane.org>]

On Mon, Jun 21, 2004 at 03:39:48PM +0000, Stefan D?singer wrote:
> Am Sonntag, 20. Juni 2004 02:53 schrieb Adrian Yee:
> > Hi,
> >
> > I've had S3 resume working with 2.6.5/6 (various mm and stock) and
> > 2.6.7-rc3-mm1, but after trying 2.6.7-rc3-mm2 and 2.6.7 kernels, S3 resume
> > has stopped working.  I'd rather not go through the process of modularizing
> > all the drivers and figuring out what's causing the problem, so I wanted to
> > know if anyone knows what change could have caused the problem.  Thanks.
> >
> On my notebook(Acer travelmate 803) I had the same problem. A look at the 
> changelog showed me, that from 2.6.7-rc2 a default resume function restores 
> the pci configuration of cards without a driver. On my system, any write to 
> the soundcard's pci configuration done by a kernel driver after resume causes 
> a crash.

Which driver does your sound card drive? Better would be to give
this driver an empty suspend/resume method that does nothing.

> I attached a path which undoes the change described above and should make S3 
> work again.

Overall the pci config space save/restore fixes much more resume 
problems than it causes new one, so this sledgehammer is the wrong
solution.

-Andi



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