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drm/amd/display: isolate global double buffer lock programming

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[why]
Global optic double buffer lock is currently disabled due to
incorrect programming sequence that affects non global lock.

[how]
Isolate global lock programming sequence out of non global lock
programming sequence, so it can be enabled without affecting
non global lock.

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2019-03-28 11:27:05 -04:00 • committed by Alex Deucher
commit db5378c1dc
4 changed files with 35 additions and 53 deletions
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