This is a note to let you know that I've just added the patch titled drm/bridge: it66121: Wait for next bridge to be probed to the 5.14-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-it66121-wait-for-next-bridge-to-be-probed.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit e6901f63dd0052f8084587ced63ce95b43951001 Author: Paul Cercueil <paul@xxxxxxxxxxxxxxx> Date: Fri Aug 27 17:39:56 2021 +0100 drm/bridge: it66121: Wait for next bridge to be probed [ Upstream commit 8b03e3fc79189b17d31a82f5e175698802a11e87 ] If run before the next bridge is initialized, of_drm_find_bridge() will give us a NULL pointer. If that's the case, return -EPROBE_DEFER; we may have more luck next time. Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx> Fixes: 988156dc2fc9 ("drm: bridge: add it66121 driver") Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20210827163956.27517-2-paul@xxxxxxxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c index b130d01147c6c..9dc41a7b91362 100644 --- a/drivers/gpu/drm/bridge/ite-it66121.c +++ b/drivers/gpu/drm/bridge/ite-it66121.c @@ -924,6 +924,9 @@ static int it66121_probe(struct i2c_client *client, ctx->next_bridge = of_drm_find_bridge(ep); of_node_put(ep); + if (!ctx->next_bridge) + return -EPROBE_DEFER; + i2c_set_clientdata(client, ctx); mutex_init(&ctx->lock);