[Intel-gfx] [PATCH] drm/i915: fix up ivb plane 3 pageflips

[Daniel Vetter]

On Tue, Jun 05, 2012 at 03:59:15PM -0300, Eugeni Dodonov wrote:
> On 06/05/2012 03:52 PM, Eugeni Dodonov wrote:
> >On 06/05/2012 05:56 AM, Daniel Vetter wrote:
> >>On Wed, May 23, 2012 at 02:02:00PM +0200, Daniel Vetter wrote:
> >>>Or at least plug another gapping hole. Apparrently hw desingers only
> >>>moved the bit field, but did not bother ot re-enumerate the planes
> >>>when adding support for a 3rd pipe.
> >>>
> >>>Discovered by i-g-t/flip_test.
> >>>
> >>>This may or may not fix the reference bugzilla, because that one
> >>>smells like we have still larger fish to fry.
> >>>
> >>>v2: Fixup the impossible case to catch programming errors, noticed by
> >>>Chris Wilson.
> >>>
> >>>References: https://bugs.freedesktop.org/show_bug.cgi?id=50069
> >>>Signed-Off-by: Daniel Vetter<daniel.vetter at ffwll.ch>
> >>
> >>Ping for review and maybe a tested-by. This fixes
> >>i-g-t/tests/flip_test on
> >>my ivb, but for some strange reasons QA can't confirm that. Still, I'd
> >>like to push this patch to -fixes. Eugeni, Ben?
> >
> >Although I don't get exact symptoms (I don't get any BUG in dmesg),
> >without this patch the flip_test hangs when running on 3rd pipe, and
> >with this patch it proceeds and finishes correctly.
> >
> >So this patch fixes this test case, and as far I can see it is correct.
> >
> >Tested-by: Eugeni Dodonov <eugeni.dodonov at intel.com>
> 
> ..and also Reviewed-by: Eugeni Dodonov <eugeni.dodonov at intel.com>
Picked up for -fixes (with a cc stable added), thanks for the review and
testing.
-Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48