usb_get_maximum_speed
maximum_speed = usb_get_maximum_speed(dev);
maximum_speed = usb_get_maximum_speed(&port->dev);
max_speed = usb_get_maximum_speed(cdns->dev);
max_speed = usb_get_maximum_speed(cdns->dev);
if (usb_get_maximum_speed(dev) == USB_SPEED_FULL)
EXPORT_SYMBOL_GPL(usb_get_maximum_speed);
usb_speed = usb_get_maximum_speed(hsotg->dev);
dwc->maximum_speed = usb_get_maximum_speed(dev);
max_speed = usb_get_maximum_speed(&qcom->dwc3->dev);
max_speed = usb_get_maximum_speed(qcom->dwc.dev);
max_speed = usb_get_maximum_speed(&pdev->dev);
max_speed = usb_get_maximum_speed(&pdev->dev);
max_speed = usb_get_maximum_speed(pdev->dev);
mtu->max_speed = usb_get_maximum_speed(dev);
config->maximum_speed = usb_get_maximum_speed(&parent->dev);
extern enum usb_device_speed usb_get_maximum_speed(struct device *dev);