]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
drm/i915/dsi: Ensure the HW is powered during HW state readout
authorImre Deak <imre.deak@intel.com>
Fri, 12 Feb 2016 16:55:19 +0000 (18:55 +0200)
committerJani Nikula <jani.nikula@intel.com>
Mon, 22 Feb 2016 15:44:39 +0000 (17:44 +0200)
commitfe97fd7eb87255883ae1da2d726baaae2b50e80d
treedbb0517f68a4c5e2c01f0bbe53f2f5f507b39f33
parentb81b801f8675838d69d1062a47ca46530ca7217b
drm/i915/dsi: 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/1455296121-4742-11-git-send-email-imre.deak@intel.com
(cherry picked from commit 3f3f42b887fbffc3353e44ef9f32456c19ae4280)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_dsi.c