devclass_delete_device
devclass_delete_device(child->dev_class, child);
devclass_delete_device(dev->dev_class, dev);
devclass_delete_device(dev->dev_class, dev);
devclass_delete_device(child->devclass, child);
devclass_delete_device(dev->devclass, dev);
devclass_delete_device(dev->devclass, dev);
devclass_delete_device(dev->devclass, dev);
err = devclass_delete_device(dc, dev);
devclass_delete_device(dev->devclass, dev);
devclass_delete_device(dev->devclass, dev);
devclass_delete_device(dev->devclass, dev);