Commit 6c36d8b0 authored by Charlene Liu's avatar Charlene Liu Committed by Alex Deucher
Browse files

drm/amd/display: System Hang When System enters to S0i3 w/ iGPU 



[why]
System Hang when system enters to S0i3 w/ iGPU
some link_enc are NULL due to BIOS integration info table not correct,
but driver should have enough null pointer protection.

Reviewed-by: default avatarLeo Chen <leo.chen@amd.com>
Signed-off-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Signed-off-by: default avatarRoman Li <roman.li@amd.com>
Signed-off-by: default avatarChuanyu Tseng <Chuanyu.Tseng@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 058cb97b

drivers/gpu/drm/amd/display/dc/hwss/dcn42/dcn42_hwseq.c

+2 −1
Original line number Diff line number Diff line
@@ -203,7 +203,8 @@ void dcn42_init_hw(struct dc *dc) 
			for (i = 0; i < dc->link_count; i++) {

				struct dc_link *link = dc->links[i];



				if (link->link_enc->funcs->is_dig_enabled &&

				if (link && link->link_enc &&

					link->link_enc->funcs->is_dig_enabled &&

						link->link_enc->funcs->is_dig_enabled(link->link_enc) &&

						hws->funcs.power_down) {

					hws->funcs.power_down(dc);