usb_hcd_alloc_bandwidth
ret = usb_hcd_alloc_bandwidth(udev, udev->actconfig, NULL, NULL);
usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL);
ret = usb_hcd_alloc_bandwidth(dev, NULL, iface->cur_altsetting, alt);
usb_hcd_alloc_bandwidth(dev, NULL, alt, iface->cur_altsetting);
retval = usb_hcd_alloc_bandwidth(dev, config, NULL, NULL);
usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL);
ret = usb_hcd_alloc_bandwidth(dev, cp, NULL, NULL);
usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL);
extern int usb_hcd_alloc_bandwidth(struct usb_device *udev,