1WAIT_EVENT_TIMEOUT(9)            Driver Basics           WAIT_EVENT_TIMEOUT(9)
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NAME

6       wait_event_timeout - sleep until a condition gets true or a timeout
7       elapses
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SYNOPSIS

10       wait_event_timeout(wq, condition, timeout);
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ARGUMENTS

13       wq
14           the waitqueue to wait on
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16       condition
17           a C expression for the event to wait for
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19       timeout
20           timeout, in jiffies
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DESCRIPTION

23       The process is put to sleep (TASK_UNINTERRUPTIBLE) until the condition
24       evaluates to true. The condition is checked each time the waitqueue wq
25       is woken up.
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27       wake_up has to be called after changing any variable that could change
28       the result of the wait condition.
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30       The function returns 0 if the timeout elapsed, or the remaining jiffies
31       (at least 1) if the condition evaluated to true before the timeout
32       elapsed.
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35Kernel Hackers Manual 3.10         June 2019             WAIT_EVENT_TIMEOUT(9)
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