usb_power_delivery_link_device
ret = usb_power_delivery_link_device(pd, &port->dev);
ret = usb_power_delivery_link_device(port->pd, &port->dev);
ret = usb_power_delivery_link_device(pd, &partner->dev);
EXPORT_SYMBOL_GPL(usb_power_delivery_link_device);
int usb_power_delivery_link_device(struct usb_power_delivery *pd, struct device *dev);