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Date: Sun, 25 Feb 2001 14:53:15 -0800 (PST)
From: Davide Libenzi <davidel@xmailserver.org>
To: Tim Waugh <twaugh@redhat.com>
Subject: RE: timing out on a semaphore
Cc: linux-kernel@vger.kernel.org
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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