[PATCH 09/31] drm/amd/display: Change EDID fallback condition

[Jasdeep Dhillon]

From: Ilya Bakoulin <ilya.bakou...@amd.com>

[Why]
Partially valid EDIDs on MST sinks are treated the same way as broken
EDIDs or read failures and result in a fallback EDID being used instead.

[How]
If edid_status is EDID_PARTIAL_VALID, prefer to use the valid EDID
blocks instead of using a fallback EDID.

Reviewed-by: Martin Leung <martin.le...@amd.com>
Acked-by: Jasdeep Dhillon <jdhil...@amd.com>
Signed-off-by: Ilya Bakoulin <ilya.bakou...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c 
b/drivers/gpu/drm/amd/display/dc/core/dc.c
index d93393cc66c0..351888fe9b72 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -4061,7 +4061,7 @@ struct dc_sink *dc_link_add_remote_sink(
         * Treat device as no EDID device if EDID
         * parsing fails
         */
-       if (edid_status != EDID_OK) {
+       if (edid_status != EDID_OK && edid_status != EDID_PARTIAL_VALID) {
                dc_sink->dc_edid.length = 0;
                dm_error("Bad EDID, status%d!\n", edid_status);
        }
-- 
2.25.1