V4L/DVB (8781): v4l2-dev: remove obsolete video_exclusive_open/release

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/v4l2-dev.c

@@ -141,34 +141,6 @@ static int video_open(struct inode *inode, struct file *file)
 	return err;
 }
 
-/*
- * open/release helper functions -- handle exclusive opens
- * Should be removed soon
- */
-int video_exclusive_open(struct inode *inode, struct file *file)
-{
-	struct video_device *vfl = video_devdata(file);
-	int retval = 0;
-
-	mutex_lock(&vfl->lock);
-	if (vfl->users)
-		retval = -EBUSY;
-	else
-		vfl->users++;
-	mutex_unlock(&vfl->lock);
-	return retval;
-}
-EXPORT_SYMBOL(video_exclusive_open);
-
-int video_exclusive_release(struct inode *inode, struct file *file)
-{
-	struct video_device *vfl = video_devdata(file);
-
-	vfl->users--;
-	return 0;
-}
-EXPORT_SYMBOL(video_exclusive_release);
-
 /**
  * get_index - assign stream number based on parent device
  * @vdev: video_device to assign index number to, vdev->dev should be assigned
@@ -320,8 +292,6 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
 		goto fail_minor;
 	}
 
-	mutex_init(&vfd->lock);
-
 	/* sysfs class */
 	memset(&vfd->dev, 0x00, sizeof(vfd->dev));
 	vfd->dev.class = &video_class;

include/media/v4l2-dev.h

@@ -77,10 +77,6 @@ struct video_device
 	 * Or use {pci|usb}_{get|set}_drvdata() directly. */
 	void *priv;
 #endif
-
-	/* for videodev.c internal usage -- please don't touch */
-	int users;                     /* video_exclusive_{open|close} ... */
-	struct mutex lock;             /* ... helper function uses these   */
 };
 
 /* Class-dev to video-device */
@@ -111,8 +107,6 @@ static inline void video_set_drvdata(struct video_device *dev, void *data)
 
 /* Obsolete stuff - Still needed for radio devices and obsolete drivers */
 extern struct video_device* video_devdata(struct file*);
-extern int video_exclusive_open(struct inode *inode, struct file *file);
-extern int video_exclusive_release(struct inode *inode, struct file *file);
 #endif
 
 #endif /* _V4L2_DEV_H */