It is fine for displays without audio functionality to not implement CEA v3 extension in their EDID. Do not return an error in that case, instead return 0 as if there was a CEA v3 extension with no audio or speaker block.
This fixes half of bug fdo#107825: https://bugs.freedesktop.org/show_bug.cgi?id=107825 Signed-off-by: Jean Delvare <[email protected]> Reviewed-by: Ville Syrjälä <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Sean Paul <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> --- Changes since v1: * Treat CEA extension version < 3 as non-error too (suggested by Ville Syrjälä) drivers/gpu/drm/drm_edid.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- linux-5.2.orig/drivers/gpu/drm/drm_edid.c 2019-09-02 10:21:01.495525663 +0200 +++ linux-5.2/drivers/gpu/drm/drm_edid.c 2019-09-04 10:33:51.080273331 +0200 @@ -4130,12 +4130,12 @@ int drm_edid_to_sad(struct edid *edid, s cea = drm_find_cea_extension(edid); if (!cea) { DRM_DEBUG_KMS("SAD: no CEA Extension found\n"); - return -ENOENT; + return 0; } if (cea_revision(cea) < 3) { DRM_DEBUG_KMS("SAD: wrong CEA revision\n"); - return -ENOTSUPP; + return 0; } if (cea_db_offsets(cea, &start, &end)) { @@ -4191,12 +4191,12 @@ int drm_edid_to_speaker_allocation(struc cea = drm_find_cea_extension(edid); if (!cea) { DRM_DEBUG_KMS("SAD: no CEA Extension found\n"); - return -ENOENT; + return 0; } if (cea_revision(cea) < 3) { DRM_DEBUG_KMS("SAD: wrong CEA revision\n"); - return -ENOTSUPP; + return 0; } if (cea_db_offsets(cea, &start, &end)) { -- Jean Delvare SUSE L3 Support _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
