From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Fri, 11 Oct 2013 11:21:31 +0000 (+0300)
Subject: drm/i915: Fix pipe off timeout handling for pre-gen4
X-Git-Tag: v3.13-rc1~76^2~68^2~76
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fbf49ea21bd4f2ed88d678f7fc8b34a7dd0a7460;p=pandora-kernel.git

drm/i915: Fix pipe off timeout handling for pre-gen4

The current pre-gen4 pipe off code might break out of the loop
due to the timeout, but then the fail to print the warning.

Refactor the code a bit to use wait_for() to avoid the problem,
and that we also re-check the condition after the timeout has
expired.

v2: Use wait_for()

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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