C++ (Cpp) video_device_release_empty Examples

Example #1

File: radio-timb.c Project: beam/linux-tbs-drivers

static int timbradio_probe(struct platform_device *pdev)
#endif
{
	struct timb_radio_platform_data *pdata = pdev->dev.platform_data;
	struct timbradio *tr;
	int err;

	if (!pdata) {
		dev_err(&pdev->dev, "Platform data missing\n");
		err = -EINVAL;
		goto err;
	}

	tr = kzalloc(sizeof(*tr), GFP_KERNEL);
	if (!tr) {
		err = -ENOMEM;
		goto err;
	}

	tr->pdata = *pdata;
	mutex_init(&tr->lock);

	strlcpy(tr->video_dev.name, "Timberdale Radio",
		sizeof(tr->video_dev.name));
	tr->video_dev.fops = &timbradio_fops;
	tr->video_dev.ioctl_ops = &timbradio_ioctl_ops;
	tr->video_dev.release = video_device_release_empty;
	tr->video_dev.minor = -1;
	tr->video_dev.lock = &tr->lock;

	strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name));
	err = v4l2_device_register(NULL, &tr->v4l2_dev);
	if (err)
		goto err_v4l2_dev;

	tr->video_dev.v4l2_dev = &tr->v4l2_dev;

	err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1);
	if (err) {
		dev_err(&pdev->dev, "Error reg video\n");
		goto err_video_req;
	}

	video_set_drvdata(&tr->video_dev, tr);

	platform_set_drvdata(pdev, tr);
	return 0;

err_video_req:
	video_device_release_empty(&tr->video_dev);
	v4l2_device_unregister(&tr->v4l2_dev);
err_v4l2_dev:
	kfree(tr);
err:
	dev_err(&pdev->dev, "Failed to register: %d\n", err);

	return err;
}

Example #2

File: radio-timb.c Project: AdrianHuang/linux-3.8.13

static int timbradio_remove(struct platform_device *pdev)
{
	struct timbradio *tr = platform_get_drvdata(pdev);

	video_unregister_device(&tr->video_dev);
	video_device_release_empty(&tr->video_dev);

	v4l2_device_unregister(&tr->v4l2_dev);

	return 0;
}