Commit 82db2e3c authored by Sivapiriyan Kumarasamy's avatar Sivapiriyan Kumarasamy Committed by Alex Deucher
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drm/amd/display: fix bug with check for HPD Low in verify link cap 



[Why]
There is a bug when determining if link training should be retried when
HPD is low in dp_verify_link_cap_with_retries.

[How]
Correctly, fail dp_verify_link_cap_with_retries without retry when
HPD is low.

Signed-off-by: default avatarSivapiriyan Kumarasamy <sivapiriyan.kumarasamy@amd.com>
Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarAbdoulaye Berthe <Abdoulaye.Berthe@amd.com>
Acked-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 15caeabc

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

+5 −2
Original line number Diff line number Diff line
@@ -1656,11 +1656,14 @@ bool dp_verify_link_cap_with_retries( 


	for (i = 0; i < attempts; i++) {

		int fail_count = 0;

		enum dc_connection_type type;

		enum dc_connection_type type = dc_connection_none;



		memset(&link->verified_link_cap, 0,

				sizeof(struct dc_link_settings));

		if (!dc_link_detect_sink(link, &type)) {

		if (!dc_link_detect_sink(link, &type) || type == dc_connection_none) {

			link->verified_link_cap.lane_count = LANE_COUNT_ONE;

			link->verified_link_cap.link_rate = LINK_RATE_LOW;

			link->verified_link_cap.link_spread = LINK_SPREAD_DISABLED;

			break;

		} else if (dp_verify_link_cap(link,

				&link->reported_link_cap,

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