297 static ssize_t v4l2_read(struct file *filp, char __user *buf,  in v4l2_read()  argument
300 	struct video_device *vdev = video_devdata(filp);  in v4l2_read()
306 		ret = vdev->fops->read(filp, buf, sz, off);  in v4l2_read()
314 static ssize_t v4l2_write(struct file *filp, const char __user *buf,  in v4l2_write()  argument
317 	struct video_device *vdev = video_devdata(filp);  in v4l2_write()
323 		ret = vdev->fops->write(filp, buf, sz, off);  in v4l2_write()
331 static unsigned int v4l2_poll(struct file *filp, struct poll_table_struct *poll)  in v4l2_poll()  argument
333 	struct video_device *vdev = video_devdata(filp);  in v4l2_poll()
339 		res = vdev->fops->poll(filp, poll);  in v4l2_poll()
346 static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)  in v4l2_ioctl()  argument
348 	struct video_device *vdev = video_devdata(filp);  in v4l2_ioctl()
357 			ret = vdev->fops->unlocked_ioctl(filp, cmd, arg);  in v4l2_ioctl()
369 static unsigned long v4l2_get_unmapped_area(struct file *filp,  in v4l2_get_unmapped_area()  argument
373 	struct video_device *vdev = video_devdata(filp);  in v4l2_get_unmapped_area()
380 	ret = vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);  in v4l2_get_unmapped_area()
388 static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm)  in v4l2_mmap()  argument
390 	struct video_device *vdev = video_devdata(filp);  in v4l2_mmap()
396 		ret = vdev->fops->mmap(filp, vm);  in v4l2_mmap()
404 static int v4l2_open(struct inode *inode, struct file *filp)  in v4l2_open()  argument
411 	vdev = video_devdata(filp);  in v4l2_open()
422 			ret = vdev->fops->open(filp);  in v4l2_open()
437 static int v4l2_release(struct inode *inode, struct file *filp)  in v4l2_release()  argument
439 	struct video_device *vdev = video_devdata(filp);  in v4l2_release()
443 		ret = vdev->fops->release(filp);  in v4l2_release()