drm/amd/display: clear underflow on optc unblank

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[why]
Underflow is asserted due to some timing condition which does not
actually result in visible underflow (i.e. it occurs while blanked).

[how]
Force clear underflow occured bit whenver we unblank.

Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Jun Lei 2018-10-24 11:39:55 -04:00 • committed by Alex Deucher

parent 6263f0fd06

commit 3ce224421b

1 changed files with 9 additions and 10 deletions

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

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19

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c

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