drm/i915: check the power well inside haswell_get_pipe_config
This fixes "unclaimed register" messages when booting with eDP only and i915.disable_power_well=1. The error messages were caused by: commit 0e8ffe1b Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Thu Mar 28 10:42:00 2013 +0100 drm/i915: add hw state readout/checking for pipe_config Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: NDamien Lespiau <damien.lespiau@intel.com> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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