drm/amd/display: dsc validate fail not pass to atomic check

Browse source

[Why] when 4k@144hz dp connect to dp1.4 dsc mst hub, requested
bandwidth exceeds caps of dsc hub. but dsc bw valid functions,
increase_dsc_bpp, try_disable_dsc, pre_validate_dsc,
compute_mst_dsc_configs_for_state, do not return false to
atomic check. this cause user mode initiate mode set to kernel,
then cause kernel assert, system hang.

[How] dsc bandwidth valid functions return pass or fail to atomic
check.

Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: hersen wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

hersen wu 2022-05-29 10:54:30 -04:00 • committed by Alex Deucher

parent b840b64bc8

commit 71be4b16d3

3 changed files with 35 additions and 16 deletions

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

Download patch file Download diff file Expand all files Collapse all files

6

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

View file

43

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

View file

2

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h

View file