drm/i915: fix up ivb plane 3 pageflips
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 23 May 2012 12:02:00 +0000 (14:02 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 17 Jan 2013 16:51:07 +0000 (08:51 -0800)
commit6148d57ee89d8ad89cd28a6f5803330c8601dfa6
tree852ba31894a423fbe091e4d8d77a97aca4ef9479
parent0ab9c5b5d2ffed9550ca2aae49ef39bfc61d2d0b
drm/i915: fix up ivb plane 3 pageflips

commit cb05d8dedefa3066bf5d74ef88c6ca6cf4bd1c87 upstream.

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
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_display.c