From d3cf9fa6baced06fce3cfb100258c0dcb9fb1305 Mon Sep 17 00:00:00 2001 From: Martin Leung Date: Fri, 19 Feb 2021 17:40:09 -0500 Subject: [PATCH] drm/amd/display: Skip powerstate DC hw access if virtual dal [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 Signed-off-by: Martin Leung Reviewed-by: Aric Cyr Acked-by: Eryk Brol Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 86de6eed8450f..3dc49964ea7fc 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -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); -- 2.30.2