From: Ilya Bakoulin <Ilya.Bakoulin@xxxxxxx>
[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.Leung@xxxxxxx>
Acked-by: Jasdeep Dhillon <jdhillon@xxxxxxx>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@xxxxxxx>
---
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
