/* This function will run an usb class driver. */
rt_err_t rt_usb_class_driver_run(ucd_t drv, void *args)
/* This function will run an usb class driver. */
rt_err_t rt_usb_class_driver_run(ucd_t drv, void *args)
{
    RT_ASSERT(drv != RT_NULL);
    if(drv->run != RT_NULL)
        drv->run(args);
    return RT_EOK;
}