From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Wed, 2 Feb 2011 20:28:03 +0000 (-0800)
Subject: drm/i915: add port assertion check when disabling transcoders
X-Git-Tag: v2.6.39-rc1~458^2~9^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=291906f11c90467ce552089ea9f7b393f41a87bb;p=pandora-kernel.git

drm/i915: add port assertion check when disabling transcoders

When a transcoder is disabled, any ports pointing at it should also be
disabled.  If they're not, we may fail to disable the transcoder,
leading to blank displays.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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