]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915/lvds: Ensure the HW is powered during HW state readout
authorImre Deak <imre.deak@intel.com>
Fri, 12 Feb 2016 16:55:21 +0000 (18:55 +0200)
committerJani Nikula <jani.nikula@intel.com>
Mon, 22 Feb 2016 15:44:40 +0000 (17:44 +0200)
commit71ae1cc50d95002f12dcb03811a0c3f27e7a50f2
tree022d9c34fe50bdbc815c22494c025b34b16aa6d5
parent470c0a15a57b5405e1486e6eab2d61c38ccede46
drm/i915/lvds: 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.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1455296121-4742-13-git-send-email-imre.deak@intel.com
(cherry picked from commit ecb2448218acf23c401434c26be256147833b221)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_lvds.c