Patch "drm/bridge: lt8912b: Register and attach our DSI device at probe" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    drm/bridge: lt8912b: Register and attach our DSI device at probe

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-lt8912b-register-and-attach-our-dsi-devic.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.



commit 3c4515b29563df7f164c18188c98821f2da3f2d8
Author: Maxime Ripard <mripard@xxxxxxxxxx>
Date:   Mon Oct 25 17:15:21 2021 +0200

    drm/bridge: lt8912b: Register and attach our DSI device at probe
    
    [ Upstream commit d89078c37b10f05fa4f4791b71db2572db361b68 ]
    
    In order to avoid any probe ordering issue, the best practice is to move
    the secondary MIPI-DSI device registration and attachment to the
    MIPI-DSI host at probe time. Let's do this.
    
    Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
    Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
    Link: https://patchwork.freedesktop.org/patch/msgid/20211025151536.1048186-7-maxime@xxxxxxxxxx
    Stable-dep-of: 941882a0e96d ("drm/bridge: lt8912b: Fix bridge_detach")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
index 24ca22b0b9f56..6ad3b2d1819f1 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
@@ -552,10 +552,6 @@ static int lt8912_bridge_attach(struct drm_bridge *bridge,
 	if (ret)
 		goto error;
 
-	ret = lt8912_attach_dsi(lt);
-	if (ret)
-		goto error;
-
 	lt->is_attached = true;
 
 	return 0;
@@ -714,8 +710,15 @@ static int lt8912_probe(struct i2c_client *client,
 
 	drm_bridge_add(&lt->bridge);
 
+	ret = lt8912_attach_dsi(lt);
+	if (ret)
+		goto err_attach;
+
 	return 0;
 
+err_attach:
+	drm_bridge_remove(&lt->bridge);
+	lt8912_free_i2c(lt);
 err_i2c:
 	lt8912_put_dt(lt);
 err_dt_parse: