usb_offload_check
if (msg.event == PM_EVENT_SUSPEND && usb_offload_check(udev)) {
offload_active = usb_offload_check(udev);
active = usb_offload_check(child);
EXPORT_SYMBOL_GPL(usb_offload_check);
active = usb_offload_check(udev);
bool usb_offload_check(struct usb_device *udev);