nes <jbarnes@virtuousgeek.org> 1296678483 -0800
committer Chris Wilson <chris@chris-wilson.co.uk> 1297080373 +0000

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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