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authorSakari Ailus <sakari.ailus@linux.intel.com>2013-12-12 12:38:17 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-05-13 13:39:00 -0300
commit85de721c46ba8ad9b283b2b3e307c9a3e8425042 (patch)
treefd49693fa164755b123d15636a10d3ee3d949d85
parent743e18377cae643f88ff62b4c2b87c45e4ecd024 (diff)
[media] media: Use a better owner for the media device
mdev->fops->owner is actually the owner of the very same module which implements media_device_register(), so it can't be unloaded anyway. Instead, use THIS_MODULE through a macro as does video_register_device(). Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
-rw-r--r--drivers/media/media-device.c7
-rw-r--r--drivers/media/media-devnode.c5
-rw-r--r--include/media/media-device.h4
-rw-r--r--include/media/media-devnode.h3
4 files changed, 12 insertions, 7 deletions
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index d5a7a135f75d..51217f00a668 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -372,7 +372,8 @@ static void media_device_release(struct media_devnode *mdev)
* - dev must point to the parent device
* - model must be filled with the device model name
*/
-int __must_check media_device_register(struct media_device *mdev)
+int __must_check __media_device_register(struct media_device *mdev,
+ struct module *owner)
{
int ret;
@@ -388,7 +389,7 @@ int __must_check media_device_register(struct media_device *mdev)
mdev->devnode.fops = &media_device_fops;
mdev->devnode.parent = mdev->dev;
mdev->devnode.release = media_device_release;
- ret = media_devnode_register(&mdev->devnode);
+ ret = media_devnode_register(&mdev->devnode, owner);
if (ret < 0)
return ret;
@@ -400,7 +401,7 @@ int __must_check media_device_register(struct media_device *mdev)
return 0;
}
-EXPORT_SYMBOL_GPL(media_device_register);
+EXPORT_SYMBOL_GPL(__media_device_register);
/**
* media_device_unregister - unregister a media device
diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c
index fb0f0469fad7..7acd19c881de 100644
--- a/drivers/media/media-devnode.c
+++ b/drivers/media/media-devnode.c
@@ -232,7 +232,8 @@ static const struct file_operations media_devnode_fops = {
* the media_devnode structure is *not* called, so the caller is responsible for
* freeing any data.
*/
-int __must_check media_devnode_register(struct media_devnode *mdev)
+int __must_check media_devnode_register(struct media_devnode *mdev,
+ struct module *owner)
{
int minor;
int ret;
@@ -253,7 +254,7 @@ int __must_check media_devnode_register(struct media_devnode *mdev)
/* Part 2: Initialize and register the character device */
cdev_init(&mdev->cdev, &media_devnode_fops);
- mdev->cdev.owner = mdev->fops->owner;
+ mdev->cdev.owner = owner;
ret = cdev_add(&mdev->cdev, MKDEV(MAJOR(media_dev_t), mdev->minor), 1);
if (ret < 0) {
diff --git a/include/media/media-device.h b/include/media/media-device.h
index 12155a9596c4..6e6db78f1ee2 100644
--- a/include/media/media-device.h
+++ b/include/media/media-device.h
@@ -87,7 +87,9 @@ struct media_device {
/* media_devnode to media_device */
#define to_media_device(node) container_of(node, struct media_device, devnode)
-int __must_check media_device_register(struct media_device *mdev);
+int __must_check __media_device_register(struct media_device *mdev,
+ struct module *owner);
+#define media_device_register(mdev) __media_device_register(mdev, THIS_MODULE)
void media_device_unregister(struct media_device *mdev);
int __must_check media_device_register_entity(struct media_device *mdev,
diff --git a/include/media/media-devnode.h b/include/media/media-devnode.h
index 3446af279fca..0dc7060f9625 100644
--- a/include/media/media-devnode.h
+++ b/include/media/media-devnode.h
@@ -82,7 +82,8 @@ struct media_devnode {
/* dev to media_devnode */
#define to_media_devnode(cd) container_of(cd, struct media_devnode, dev)
-int __must_check media_devnode_register(struct media_devnode *mdev);
+int __must_check media_devnode_register(struct media_devnode *mdev,
+ struct module *owner);
void media_devnode_unregister(struct media_devnode *mdev);
static inline struct media_devnode *media_devnode_data(struct file *filp)

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