This is a note to let you know that I've just added the patch titled drm/sun4i: Set device driver data at bind time for use in unbind to the 4.14-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-sun4i-set-device-driver-data-at-bind-time-for-us.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit e33a3c7bf5bbfe7cad52cf0da76f2a5bf5abfcf6 Author: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> Date: Thu Apr 18 15:27:26 2019 +0200 drm/sun4i: Set device driver data at bind time for use in unbind [ Upstream commit 02b92adbe33e6dbd15dc6e32540b22f47c4ff0a2 ] Our sun4i_drv_unbind gets the drm device using dev_get_drvdata. However, that driver data is never set in sun4i_drv_bind. Set it there to avoid getting a NULL pointer at unbind time. Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support") Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20190418132727.5128-3-paul.kocialkowski@xxxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c index 8d3c8070ed862..e09161cf312f7 100644 --- a/drivers/gpu/drm/sun4i/sun4i_drv.c +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c @@ -96,6 +96,8 @@ static int sun4i_drv_bind(struct device *dev) ret = -ENOMEM; goto free_drm; } + + dev_set_drvdata(dev, drm); drm->dev_private = drv; INIT_LIST_HEAD(&drv->engine_list); INIT_LIST_HEAD(&drv->tcon_list);