[ Upstream commit f5a9ed867c83875546c9aadd4ed8e785e9adcc3c ]

For our component-backed driver to be properly removed, we need to
delete the component master in sun4i_drv_remove and make sure to call
component_unbind_all in the master's unbind so that all components are
unbound when the master is.

Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Paul Kocialkowski <paul.kocialkow...@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.rip...@bootlin.com>
Link: 
https://patchwork.freedesktop.org/patch/msgid/20190418132727.5128-4-paul.kocialkow...@bootlin.com
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/gpu/drm/sun4i/sun4i_drv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c 
b/drivers/gpu/drm/sun4i/sun4i_drv.c
index 7cac01c72c027..62703630090aa 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -160,6 +160,8 @@ static void sun4i_drv_unbind(struct device *dev)
        drm_mode_config_cleanup(drm);
        of_reserved_mem_device_release(dev);
        drm_dev_put(drm);
+
+       component_unbind_all(dev, NULL);
 }
 
 static const struct component_master_ops sun4i_drv_master_ops = {
@@ -407,6 +409,8 @@ static int sun4i_drv_probe(struct platform_device *pdev)
 
 static int sun4i_drv_remove(struct platform_device *pdev)
 {
+       component_master_del(&pdev->dev, &sun4i_drv_master_ops);
+
        return 0;
 }
 
-- 
2.20.1



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