#include <linux/workqueue.h>
#include <linux/timer.h>
//定义
struct delayed_work mac_wr_part_work;
//调用
if(flag_mac){
pr_usbnet("usbnet>>>%s: call mac_wr_part_work\n", __func__);
schedule_delayed_work(&dev->mac_wr_part_work, msecs_to_jiffies(30000));
}
//proble 里初始化
INIT_DELAYED_WORK(&dev->mac_wr_part_work, mac_wr_part_work_func);