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ddk: fixed bug with emty list in wake_up()

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git-svn-id: svn://kolibrios.org@6125 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2016-02-01 21:30:55 +00:00
parent 2f1193a112
commit 4ab605b8d3
5 changed files with 133 additions and 25 deletions
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32
drivers/include/linux/wait.h
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@@ -248,12 +248,15 @@ void wake_up(wait_queue_head_t *q)
unsigned long flags;
spin_lock_irqsave(&q->lock, flags);
curr = list_first_entry(&q->task_list, typeof(*curr), task_list);
curr = list_first_entry_or_null(&q->task_list, typeof(*curr), task_list);
if(curr != NULL)
{
// printf("raise event \n");
kevent_t event;
event.code = -1;
RaiseEvent(curr->evnt, 0, &event);
if(!WARN_ON(curr->evnt.handle == 0))
{
kevent_t event = {0};
event.code = -1;
RaiseEvent(curr->evnt, 0, &event);
}
}
spin_unlock_irqrestore(&q->lock, flags);
}
@@ -265,12 +268,15 @@ void wake_up_interruptible(wait_queue_head_t *q)
unsigned long flags;
spin_lock_irqsave(&q->lock, flags);
curr = list_first_entry(&q->task_list, typeof(*curr), task_list);
curr = list_first_entry_or_null(&q->task_list, typeof(*curr), task_list);
if(curr != NULL)
{
// printf("raise event \n");
kevent_t event;
event.code = -1;
RaiseEvent(curr->evnt, 0, &event);
if(!WARN_ON(curr->evnt.handle == 0))
{
kevent_t event = {0};
event.code = -1;
RaiseEvent(curr->evnt, 0, &event);
}
}
spin_unlock_irqrestore(&q->lock, flags);
}
@@ -280,12 +286,12 @@ void wake_up_all(wait_queue_head_t *q)
{
wait_queue_t *curr;
unsigned long flags;
spin_lock_irqsave(&q->lock, flags);
list_for_each_entry(curr, &q->task_list, task_list)
{
// printf("raise event \n");
kevent_t event;
if(WARN_ON(curr->evnt.handle == 0))
continue;
kevent_t event = {0};
event.code = -1;
RaiseEvent(curr->evnt, 0, &event);
}