This is a note to let you know that I've just added the patch titled drm/bridge: tc358767: Fix (e)DP bridge endpoint parsing in dedicated function to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-bridge-tc358767-fix-e-dp-bridge-endpoint-parsing-in-dedicated-function.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 9030a9e571b3ba250d3d450a98310e3c74ecaff4 Mon Sep 17 00:00:00 2001 From: Marek Vasut <marex@xxxxxxx> Date: Thu, 28 Apr 2022 23:31:32 +0200 Subject: drm/bridge: tc358767: Fix (e)DP bridge endpoint parsing in dedicated function From: Marek Vasut <marex@xxxxxxx> commit 9030a9e571b3ba250d3d450a98310e3c74ecaff4 upstream. Per toshiba,tc358767.yaml DT binding document, port@2 the output (e)DP port is optional. In case this port is not described in DT, the bridge driver operates in DPI-to-DP mode. The drm_of_find_panel_or_bridge() call in tc_probe_edp_bridge_endpoint() returns -ENODEV in case port@2 is not present in DT and this specific return value is incorrectly propagated outside of tc_probe_edp_bridge_endpoint() function. All other error values must be propagated and are propagated correctly. Return 0 in case the port@2 is missing instead, that reinstates the original behavior before the commit this patch fixes. Fixes: 8478095a8c4b ("drm/bridge: tc358767: Move (e)DP bridge endpoint parsing into dedicated function") Signed-off-by: Marek Vasut <marex@xxxxxxx> Cc: Jonas Karlman <jonas@xxxxxxxxx> Cc: Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx> Cc: Marek Vasut <marex@xxxxxxx> Cc: Maxime Ripard <maxime@xxxxxxxxxx> Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Cc: Robert Foss <robert.foss@xxxxxxxxxx> Cc: Sam Ravnborg <sam@xxxxxxxxxxxx> Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20220428213132.447890-1-marex@xxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/bridge/tc358767.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1573,7 +1573,7 @@ static int tc_probe_edp_bridge_endpoint( tc->bridge.type = DRM_MODE_CONNECTOR_DisplayPort; } - return ret; + return 0; } static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) Patches currently in stable-queue which might be from marex@xxxxxxx are queue-5.15/drm-bridge-tc358767-move-e-dp-bridge-endpoint-parsin.patch queue-5.15/drm-bridge-tc358767-fix-e-dp-bridge-endpoint-parsing-in-dedicated-function.patch