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Commit 65317388 authored by Eric Yang's avatar Eric Yang Committed by Alex Deucher
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drm/amd/display: Treat bad EDID as no EDID 



We have an mst dock firmware that will emulate an EDID with bad
checksum.

v2: Tread -> Treat

Signed-off-by: default avatarEric Yang <Eric.Yang2@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 05a2e831

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

+9 −4
Original line number Diff line number Diff line
@@ -1637,12 +1637,17 @@ struct dc_sink *dc_link_add_remote_sink( 
			&dc_sink->dc_edid,

			&dc_sink->edid_caps);



	if (edid_status != EDID_OK)

		goto fail;

	/*

	 * Treat device as no EDID device if EDID

	 * parsing fails

	 */

	if (edid_status != EDID_OK) {

		dc_sink->dc_edid.length = 0;

		dm_error("Bad EDID, status%d!\n", edid_status);

	}



	return dc_sink;

fail:

	dc_link_remove_remote_sink(link, dc_sink);



fail_add_sink:

	dc_sink_release(dc_sink);

	return NULL;