8  * 2018/06/26     Bernard      Fix the wait queue issue when wakeup a soon 
18 void rt_wqueue_add(rt_wqueue_t *queue, struct rt_wqueue_node *node)  in rt_wqueue_add()  argument
23     rt_list_insert_before(&(queue->waiting_list), &(node->list));  in rt_wqueue_add()
41 void rt_wqueue_wakeup(rt_wqueue_t *queue, void *key)  in rt_wqueue_wakeup()  argument
50     queue_list = &(queue->waiting_list);  in rt_wqueue_wakeup()
53     /* set wakeup flag in the queue */  in rt_wqueue_wakeup()
54     queue->flag = RT_WQ_FLAG_WAKEUP;  in rt_wqueue_wakeup()
77 int rt_wqueue_wait(rt_wqueue_t *queue, int condition, int msec)  in rt_wqueue_wait()  argument
99     if (queue->flag == RT_WQ_FLAG_WAKEUP)  in rt_wqueue_wait()
105     rt_wqueue_add(queue, &__wait);  in rt_wqueue_wait()
124     queue->flag = 0;  in rt_wqueue_wait()