/* This function will initilize the usb class driver related data structure, and it should be invoked in the usb system initialization. */
rt_err_t rt_usbh_class_driver_init(void)
/* This function will initilize the usb class driver related data structure, and it should be invoked in the usb system initialization. */
rt_err_t rt_usbh_class_driver_init(void)
{
    rt_list_init(&_driver_list);
    return RT_EOK;
}