drm/i915: Ensure the HW is powered during display pipe HW readout

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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>
Revieved-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1455296121-4742-3-git-send-email-imre.deak@intel.com

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This commit is contained in:

Imre Deak 2016-02-12 18:55:11 +02:00

parent 0973128002

commit 1729050eb4

1 changed files with 48 additions and 19 deletions

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drivers/gpu/drm/i915/intel_display.c

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