Commit 241a074f authored by Shen, George's avatar Shen, George Committed by Alex Deucher
Browse files

drm/amd/display: Add link enc null ptr check for cable ID (#2597) 



[Why]
Certain configurations will result in link encoder
to not be assigned to the link at the time we apply
cable ID logic. We should skip it in those cases.

[How]
Check if link_enc is not null before applying
cable ID.

Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarStylon Wang <stylon.wang@amd.com>
Signed-off-by: default avatarGeorge Shen <george.shen@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 274b924c

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

+6 −1
Original line number Diff line number Diff line
@@ -6327,7 +6327,12 @@ void dpcd_set_source_specific_data(struct dc_link *link) 


void dpcd_update_cable_id(struct dc_link *link)

{

	if (!link->link_enc->features.flags.bits.IS_UHBR10_CAPABLE ||

	struct link_encoder *link_enc = NULL;



	link_enc = link_enc_cfg_get_link_enc(link);



	if (!link_enc ||

			!link_enc->features.flags.bits.IS_UHBR10_CAPABLE ||

			link->dprx_status.cable_id_updated)

		return;