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drm/amd/display: Skip powerstate DC hw access if virtual dal

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[Why]
On baco-enabled systems running virtual dal, can get set power
state when hw is not initialized

[How]
Skip DC hw part of setPowerState when hw not available

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Martin Leung <martin.leung@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Martin Leung
2021-02-19 17:40:09 -05:00
committed by Alex Deucher
parent ffe5650af0
commit d3cf9fa6ba
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc.c
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@@ -2969,6 +2969,9 @@ void dc_set_power_state(
struct kref refcount;
struct display_mode_lib *dml;
if (!dc->current_state)
return;
switch (power_state) {
case DC_ACPI_CM_POWER_STATE_D0:
dc_resource_state_construct(dc, dc->current_state);