Re: [Bug #16294] [Q35 bisected] hang at init of i915 driver

Rafael J. Wysocki
2010-07-09T20:56:48Z

On Friday, July 09, 2010, Kees Cook wrote:
> Hi Rafael,
>
> On Fri, Jul 09, 2010 at 01:41:39AM +0200, Rafael J. Wysocki wrote:
> > The following bug entry is on the current list of known regressions
> > from 2.6.34. Please verify if it still should be listed and let the tracking team
> > know (either way).
>
> Yup, this is still a regression. The fix is trivial (see below).

Thanks for the update.

> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=16294
> > Subject : [Q35 bisected] hang at init of i915 driver
> > Submitter : Kees Cook <kees-oSa+0FWJbaXR7s880joybQ@public.gmane.org>
> > Date : 2010-06-25 18:20 (14 days old)
> > First-Bad-Commit: http://git.kernel.org/linus/f1befe71fa7a79ab733011b045639d8d809924ad
>
> diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
> index 9344216..0d9007d 100644
> --- a/drivers/char/agp/intel-gtt.c
> +++ b/drivers/char/agp/intel-gtt.c
> @@ -1229,6 +1229,7 @@ static int intel_i915_get_gtt_size(void)
> (gmch_ctrl & G33_PGETBL_SIZE_MASK));
> size = 512;
> }
> + size = 1024;
> } else {
> /* On previous hardware, the GTT size was just what was
> * required to map the aperture.

Rafael