USBD_IN_USE
return err == USBD_IN_USE ? EBUSY : EIO;
case USBD_IN_USE:
return USBD_IN_USE;
err = USBD_IN_USE;
return USBD_IN_USE;
return USBD_IN_USE;
return USBD_IN_USE;
return USBD_IN_USE;
return USBD_IN_USE;
return USBD_IN_USE == err ? EBUSY : EIO;
err = USBD_IN_USE; /* XXX rule out or switch to 64-bit */
err = USBD_IN_USE;
err = USBD_IN_USE;
err = USBD_IN_USE;