From: Sung Lee <sung.lee@xxxxxxx>
[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@xxxxxxx>
Reviewed-by: Yongqiang Sun <yongqiang.sun@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 7 +++++--
1 file 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);
--
2.26.0
_______________________________________________
amd-gfx mailing list
amd-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
