From: Christian König <christian.koenig@amd.com>
Date: Wed, 23 Apr 2014 18:46:06 +0000 (+0200)
Subject: drm/radeon: use pflip irq on R600+ v2
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~207^2~2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f5d636d2a74b755879feec35e14a259de52ccc07;p=pandora-kernel.git

drm/radeon: use pflip irq on R600+ v2

Testing the update pending bit directly after issuing an
update is nonsense cause depending on the pixel clock the
CRTC needs a bit of time to execute the flip even when we
are in the VBLANK period.

This is just a non invasive patch to solve the problem at
hand, a more complete and cleaner solution should follow
in the next merge window.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=76564

v2: fix source IDs for CRTC2-6

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
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