From: Eric Yang <Eric.Yang2@xxxxxxx>
We have an mst dock firmware that will emulate an EDID with bad
checksum.
Change-Id: Ice8515c929230366ec4ad7da743b448447c6db7e
Signed-off-by: Eric Yang <Eric.Yang2 at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Harry Wentland <harry.wentland at amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index f4ffbf2e2caf..8583d9e05721 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -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;
--
2.14.1
