Commits
Imre Deak committed 7a6252c6bce
drm/i915/crt: Ensure the HW is powered during HW state readout The assumption when adding the intel_display_power_is_enabled() checks was that if it returns success the power can't be turned off afterwards during the HW access, which is guaranteed by modeset locks. This isn't always true, so make sure we hold a dedicated reference for the time of the access. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93439 CC: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1455296121-4742-7-git-send-email-imre.deak@intel.com (cherry picked from commit 1c8fdda1ea947ae8cf994969a1c285acc7089cb9) Signed-off-by: Jani Nikula <jani.nikula@intel.com>