drm/i915/ibx: Ensure the HW is powered during PLL HW readout

Browse source

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: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1455296121-4742-4-git-send-email-imre.deak@intel.com
(cherry picked from commit 12fda3876d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

...

This commit is contained in:

Imre Deak 2016-02-12 18:55:12 +02:00 • committed by Jani Nikula

parent 9fb84d5a92

commit 013ef6cfc4

1 changed files with 3 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

drivers/gpu/drm/i915/intel_display.c

View file