drm/amd/display: Poll pending DOWN_REP before enabling the link

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[Why]
With special monitor combination on MST, the UP_REQ could come
after clear payload table. It makes the pending DOWN_REP fail
to be handled after link training and the new DOWN_REQ will be queued
until time out .

[How]
To move the current polling pending DOWN_REP procedure to after
clear payload table to make sure the pending DOWN_REP can be
done before enabling the link.

Signed-off-by: Martin Tsai <martin.tsai@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Martin Tsai 2019-02-11 15:26:21 +08:00 • committed by Alex Deucher

parent 55c374e9eb

commit 9cc032b239

3 changed files with 6 additions and 6 deletions

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2

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

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10

drivers/gpu/drm/amd/display/dc/core/dc_link.c

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2

drivers/gpu/drm/amd/display/dc/dm_helpers.h

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