From: Jani Nikula jani.nikula@intel.com
commit 72794d16bd535a984e6653a18f5862405b49b5f9 upstream.
Commit 537d9ed2f6c1 ("drm/edid: convert add_cea_modes() to use cea db iter") inadvertently moved the do_hdmi_vsdb_modes() call within the db iteration loop, always passing NULL as the CTA VDB to do_hdmi_vsdb_modes(), skipping a lot of stereo modes.
Move the call back outside of the loop.
This does mean only one CTA VDB and HDMI VSDB combination will be handled, but it's an unlikely scenario to have more than one of either block, and it was not accounted for before the regression either.
Fixes: 537d9ed2f6c1 ("drm/edid: convert add_cea_modes() to use cea db iter") Cc: stable@vger.kernel.org # v6.0+ Cc: Ville Syrjälä ville.syrjala@linux.intel.com Signed-off-by: Jani Nikula jani.nikula@intel.com Reviewed-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/cf159b8816191ed595a3cb954acaf1... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/drm_edid.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-)
--- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -5093,13 +5093,12 @@ static int add_cea_modes(struct drm_conn { const struct cea_db *db; struct cea_db_iter iter; + const u8 *hdmi = NULL, *video = NULL; + u8 hdmi_len = 0, video_len = 0; int modes = 0;
cea_db_iter_edid_begin(drm_edid, &iter); cea_db_iter_for_each(db, &iter) { - const u8 *hdmi = NULL, *video = NULL; - u8 hdmi_len = 0, video_len = 0; - if (cea_db_tag(db) == CTA_DB_VIDEO) { video = cea_db_data(db); video_len = cea_db_payload_len(db); @@ -5115,18 +5114,17 @@ static int add_cea_modes(struct drm_conn modes += do_y420vdb_modes(connector, vdb420, cea_db_payload_len(db) - 1); } - - /* - * We parse the HDMI VSDB after having added the cea modes as we - * will be patching their flags when the sink supports stereo - * 3D. - */ - if (hdmi) - modes += do_hdmi_vsdb_modes(connector, hdmi, hdmi_len, - video, video_len); } cea_db_iter_end(&iter);
+ /* + * We parse the HDMI VSDB after having added the cea modes as we will be + * patching their flags when the sink supports stereo 3D. + */ + if (hdmi) + modes += do_hdmi_vsdb_modes(connector, hdmi, hdmi_len, + video, video_len); + return modes; }