async_put_intf
INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
struct work_struct async_put_intf;
container_of(data, struct hso_device, async_put_intf);
schedule_work(&hso_dev->async_put_intf);
cancel_work_sync(&serial_table[i]->async_put_intf);
cancel_work_sync(&network_table[i]->async_put_intf);
static void async_put_intf(struct work_struct *data);