diff options
| author | Eric Yang <Eric.Yang2@amd.com> | 2018-02-08 14:05:14 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 14:20:13 -0500 |
| commit | 6531738842dbc84ced7514b8934d7d43fae74680 (patch) | |
| tree | 50ff0db2344442abddcf0eec746b7a816822c099 | |
| parent | 05a2e8315fb8dec47a8e06de8ced6f968936b0a7 (diff) | |
| download | linux-6531738842dbc84ced7514b8934d7d43fae74680.tar.gz linux-6531738842dbc84ced7514b8934d7d43fae74680.tar.bz2 linux-6531738842dbc84ced7514b8934d7d43fae74680.zip | |
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: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc.c | 13 |
1 files 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; |