From: Imre Deak <imre.deak@intel.com>
Date: Mon, 14 Apr 2014 17:24:29 +0000 (+0300)
Subject: drm/i915: get a runtime PM ref for the deferred GT powersave enabling
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~56^2~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6df39b5ea6342323a42edfbeeca0a28c643d7ae;p=pandora-kernel.git

drm/i915: get a runtime PM ref for the deferred GT powersave enabling

At least on VLV but probably on other platforms too we depend on RC6
being enabled for RPM, so disable RPM until the delayed RC6 enabling
completes.

v2:
- explain the reason for the _noresume version of RPM get (Daniel)
- use the simpler 'if (schedule_work()) rpm_get();' instead of
  'if (!cancel_work_sync()) rpm_get(); schedule_work();'

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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