Re: [Regression, post-rc2] Commit a5ee4eb7541 breaks OpenGL onRS780 (was: Re: Linux 2.6.34-rc3)

From: Jesse Barnes
Date: Thu Apr 01 2010 - 18:50:29 EST

On Thu, 1 Apr 2010 09:29:23 -0700 (PDT)
Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Thu, 1 Apr 2010, Rafael J. Wysocki wrote:
> >
> > OK, I've verified that partial revert (below) is sufficient.
> Hmm. Through the DRM merge I just did, this area actually conflicted, and
> the resolved version is now
> if ((rdev->family >= CHIP_RV380) &&
> (!(rdev->flags & RADEON_IS_IGP))) {
> which presumably also fixes your issue?
> [ Side note: somebody in the DRM tree seems to be way too used to LISP,
> and thinks that adding parenthesis always improves the code ;-]
> However, I do suspect that we should probably revert the quirk regardless
> as being useless (ie it probably was related to those IGP chips that
> apparently don't do MSI anyway).
> So the patch that reverts the quirk by Clemens (to replace it with
> disabling MSI entirely when the AMD NB doesn't accept them) seems to be a
> good idea regardless, since it's apparently not just about gfx. Jesse?

Yeah, that sounds fine. I can include it in my next pull req or you
can just pick it up directly.

Jesse Barnes, Intel Open Source Technology Center
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