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| author | Ilya Bakoulin <Ilya.Bakoulin@amd.com> | 2022-09-13 14:56:13 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-09-29 09:41:44 -0400 |
| commit | 7712b0a7df76447515752afcf8ec470b17ea30ef (patch) | |
| tree | 012eee0729ee7b14dc529e47aa44e1c67dc6e65a /drivers/gpu/drm/amd/display/dc | |
| parent | d3d61281edc0ab0c3d566e760d5bd4db5a9c217a (diff) | |
| download | linux-stable-7712b0a7df76447515752afcf8ec470b17ea30ef.tar.gz linux-stable-7712b0a7df76447515752afcf8ec470b17ea30ef.tar.bz2 linux-stable-7712b0a7df76447515752afcf8ec470b17ea30ef.zip | |
drm/amd/display: Change EDID fallback condition
[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@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index f0b90ca7d086..eeaa347cdc37 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -4006,7 +4006,7 @@ 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); } |