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

[Chris Wilson]

On Wed, 23 May 2012 14:02:00 +0200, Daniel Vetter <daniel.vetter at ffwll.ch> 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>

The code looks correct, just not in a position atm to verify the
MI_DISPLAY_FLIP bits.

Acked-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre