[PATCH 3/3] drm/sun4i: Fix component unbinding and component master deletion

From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
To: dri-devel@lists.freedesktop.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com
Cc: Daniel Vetter <daniel@ffwll.ch>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
	David Airlie <airlied@linux.ie>, Chen-Yu Tsai <wens@csie.org>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: [PATCH 3/3] drm/sun4i: Fix component unbinding and component master deletion
Date: Thu, 18 Apr 2019 15:27:27 +0200	[thread overview]
Message-ID: <20190418132727.5128-4-paul.kocialkowski@bootlin.com> (raw)
In-Reply-To: <20190418132727.5128-1-paul.kocialkowski@bootlin.com>

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.kocialkowski@bootlin.com>
---
 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 af07291544a4..0ea365e54de1 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -137,6 +137,8 @@ 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 = {
@@ -385,6 +387,8 @@ 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;
 }
 
-- 
2.21.0


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