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Commit dd15640b authored by Becle Lee's avatar Becle Lee Committed by Alex Deucher
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drm/amd/display: Wait for hubp read line for Pollock



[Why]
Underflow occurred while hubp ret pipe read is idle and the
second pipe is powered up and added. Flickering and underflow
are only observed on Pollock.

[How]
Check the hubp ret pipe read prior to unlock pipes.

Reviewed-by: default avatarHersen Wu <hersenxs.wu@amd.com>
Reviewed-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarAgustin Gutierrez <agustin.gutierrez@amd.com>
Signed-off-by: default avatarBecle Lee <becle.lee@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2716bc82
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