void uio_unregister_device()

in uio.c [1044:1072]

• 20 lines of code
• 5 McCabe index (conditional complexity)

void uio_unregister_device(struct uio_info *info)
{
	struct uio_device *idev;
	unsigned long minor;

	if (!info || !info->uio_dev)
		return;

	idev = info->uio_dev;
	minor = idev->minor;

	mutex_lock(&idev->info_lock);
	uio_dev_del_attributes(idev);

	if (info->irq && info->irq != UIO_IRQ_CUSTOM)
		free_irq(info->irq, idev);

	idev->info = NULL;
	mutex_unlock(&idev->info_lock);

	wake_up_interruptible(&idev->wait);
	kill_fasync(&idev->async_queue, SIGIO, POLL_HUP);

	device_unregister(&idev->dev);

	uio_free_minor(minor);

	return;
}