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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: Maxime Ripard <maxime.ripard@bootlin.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Chen-Yu Tsai <wens@csie.org>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Subject: [PATCH v2] drm/sun4i: Unbind components before releasing DRM and memory
Date: Wed, 24 Apr 2019 11:04:13 +0200	[thread overview]
Message-ID: <20190424090413.6918-1-paul.kocialkowski@bootlin.com> (raw)

Our components may still be using the DRM device driver (if only to
access our driver's private data), so make sure to unbind them before
the final drm_dev_put.

Also release our reserved memory after component unbind instead of
before to match reverse creation order.

Fixes: f5a9ed867c83 ("drm/sun4i: Fix component unbinding and component master deletion")
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
---
Changes since v1:
* Fixed comment and added reviewed-by tag.

 drivers/gpu/drm/sun4i/sun4i_drv.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index 843b86661833..29258b404e54 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -149,10 +149,11 @@ static void sun4i_drv_unbind(struct device *dev)
 	drm_kms_helper_poll_fini(drm);
 	drm_atomic_helper_shutdown(drm);
 	drm_mode_config_cleanup(drm);
-	of_reserved_mem_device_release(dev);
-	drm_dev_put(drm);
 
 	component_unbind_all(dev, NULL);
+	of_reserved_mem_device_release(dev);
+
+	drm_dev_put(drm);
 }
 
 static const struct component_master_ops sun4i_drv_master_ops = {
-- 
2.21.0


                 reply	other threads:[~2019-04-24  9:04 UTC|newest]

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