diff mbox series

[13/26] media device: Initialise media devnode in media_device_init()

Message ID 20230201214535.347075-14-sakari.ailus@linux.intel.com
State Superseded
Headers show
Series Media device lifetime management | expand

Commit Message

Sakari Ailus Feb. 1, 2023, 9:45 p.m. UTC 
Call media_devnode_init() from media_device_init(). This has the effect of
creating a struct device for the media_devnode before it is registered,
making it possible to obtain a reference to it for e.g. video devices.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/mc/mc-device.c | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
index c90f79454988..f4d880fcd977 100644
--- a/drivers/media/mc/mc-device.c
+++ b/drivers/media/mc/mc-device.c
@@ -716,8 +716,8 @@  void media_device_init(struct media_device *mdev)
 	mutex_init(&mdev->req_queue_mutex);
 	mutex_init(&mdev->graph_mutex);
 	ida_init(&mdev->entity_internal_idx);
-
 	atomic_set(&mdev->request_id, 0);
+	media_devnode_init(&mdev->devnode);
 
 	if (!*mdev->bus_info)
 		media_set_bus_info(mdev->bus_info, sizeof(mdev->bus_info),
@@ -734,6 +734,7 @@  void media_device_cleanup(struct media_device *mdev)
 	media_graph_walk_cleanup(&mdev->pm_count_walk);
 	mutex_destroy(&mdev->graph_mutex);
 	mutex_destroy(&mdev->req_queue_mutex);
+	put_device(&mdev->devnode.dev);
 }
 EXPORT_SYMBOL_GPL(media_device_cleanup);
 
@@ -749,26 +750,19 @@  int __must_check __media_device_register(struct media_device *mdev,
 	/* Set version 0 to indicate user-space that the graph is static */
 	mdev->topology_version = 0;
 
-	media_devnode_init(&mdev->devnode);
-
 	ret = media_devnode_register(&mdev->devnode, owner);
 	if (ret < 0)
-		goto out_put;
+		return ret;
 
 	ret = device_create_file(&mdev->devnode.dev, &dev_attr_model);
-	if (ret < 0)
-		goto out_unregister;
+	if (ret < 0) {
+		media_devnode_unregister(&mdev->devnode);
+		return ret;
+	}
 
 	dev_dbg(mdev->dev, "Media device registered\n");
 
 	return 0;
-
-out_unregister:
-	media_devnode_unregister(&mdev->devnode);
-out_put:
-	put_device(&mdev->devnode.dev);
-
-	return ret;
 }
 EXPORT_SYMBOL_GPL(__media_device_register);
 
@@ -815,7 +809,6 @@  void media_device_unregister(struct media_device *mdev)
 	device_remove_file(&mdev->devnode.dev, &dev_attr_model);
 	dev_dbg(mdev->dev, "Media device unregistering\n");
 	media_devnode_unregister(&mdev->devnode);
-	put_device(&mdev->devnode.dev);
 }
 EXPORT_SYMBOL_GPL(media_device_unregister);