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@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190418132727.5128-3-paul.kocialkowski@bootlin.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index 8b0cd08..7cac01c 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -92,6 +92,8 @@ 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->frontend_list);
        INIT_LIST_HEAD(&drv->engine_list);