Patch "drm/mipi-dsi: Detach devices when removing the host" has been added to the 5.10-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

    drm/mipi-dsi: Detach devices when removing the host

to the 5.10-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-mipi-dsi-detach-devices-when-removing-the-host.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 7c971d1fa33467a0329ee31be65fab71ab526e16
Author: Maxime Ripard <maxime@xxxxxxxxxx>
Date:   Mon Jul 11 19:38:31 2022 +0200

    drm/mipi-dsi: Detach devices when removing the host
    
    [ Upstream commit 668a8f17b5290d04ef7343636a5588a0692731a1 ]
    
    Whenever the MIPI-DSI host is unregistered, the code of
    mipi_dsi_host_unregister() loops over every device currently found on that
    bus and will unregister it.
    
    However, it doesn't detach it from the bus first, which leads to all kind
    of resource leaks if the host wants to perform some clean up whenever a
    device is detached.
    
    Fixes: 068a00233969 ("drm: Add MIPI DSI bus support")
    Acked-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
    Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20220711173939.1132294-2-maxime@xxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 5dd475e82995..2c43d54766f3 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -300,6 +300,7 @@ static int mipi_dsi_remove_device_fn(struct device *dev, void *priv)
 {
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
 
+	mipi_dsi_detach(dsi);
 	mipi_dsi_device_unregister(dsi);
 
 	return 0;