diff options
| author |   Sung Lee <sung.lee@amd.com> | 2020-04-05 16:40:48 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-04-09 10:43:16 -0400 |
| commit | d5e27f072844f6097ab3305b3b7bee00709b953b (patch) | |
| tree | e64e0f8429b2ad5ce328c11fdfd2e3e0041a8aa3 | |
| parent | drm/amd/display: Don't change mpcc tree for medium updates on DCN20 hwseq (diff) | |
drm/amd/display: Check power_down functions exist before calling
[WHY]
The power_down() function was only defined for specific asics and will
crash the system if it is called by an asic with eDP connected that does
not have it defined.
[HOW]
Add a check for the function's existence before calling it.
Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 079a33a96f90..6086bbec94fe 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1378,8 +1378,11 @@ void dcn10_init_hw(struct dc *dc) struct dc_link *edp_link = get_edp_link(dc); if (edp_link && - edp_link->link_enc->funcs->is_dig_enabled && - edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc)) { + edp_link->link_enc->funcs->is_dig_enabled && + edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) && + dc->hwss.edp_backlight_control && + dc->hwss.power_down && + dc->hwss.edp_power_control) { dc->hwss.edp_backlight_control(edp_link, false); dc->hwss.power_down(dc); dc->hwss.edp_power_control(edp_link, false); |