From: Sung Lee <[email protected]> [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 <[email protected]> Reviewed-by: Yongqiang Sun <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> --- 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 [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
