RE: timing out on a semaphore

Davide Libenzi
2001-02-25T22:52:34Z

On 25-Feb-2001 Tim Waugh wrote:
> I'm trying to chase down a semaphore time-out problem. I want to
> sleep on a semaphore until either
>
> (a) it's signalled, or
> (b) some amount of time has elapsed.
>
> What I'm doing is calling add_timer, and then down_interruptible, and
> finally del_timer. The timer's function ups the semaphore.
>
> The code is in parport_wait_event, in drivers/parport/ieee1284.c.
>
> Can anyone see anything obviously wrong with it? It seems to
> sometimes get stuck.

If it's SMP, have You tried to call del_timer_sync() ?

- Davide