Commitb3064154dftried to revert commitdff392dbd2, but wasn't complete, which resulted in regressions on Haswell. So this commit should fixb3064154dfby undoing what it did and providing an actual complete revert ofdff392dbd2. Fixes regression introduced by: commitb3064154dfAuthor: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Date: Tue Mar 4 00:42:44 2014 +0100 drm/i915: Don't just say it, actually force edp vdd Testcase: igt/pm_pc8 Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Tested-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>