From: Steven Scholz <steven.scholz@imc-berlin.de>
To: LinuxPPC <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: problem with queue_task() and mark_bh()...
Date: Thu, 15 Apr 2004 10:08:25 +0200 [thread overview]
Message-ID: <407E42F9.1060201@imc-berlin.de> (raw)
In-Reply-To: <407BF458.5080408@imc-berlin.de>
Hi,
I wrote:
> I have a problem with queue_task() and mark_bh().
> ...
> At a later point (namely in the interrupt service rountine this happens:
>
> /* If we have interrupts pending, then put them on a system task queue.*/
> if( events == HCF_INT_PENDING ) {
> /* Schedule the ISR handler as a bottom-half task in the
> * tq_immediate queue
> */
> printk( "Schedule the ISR handler %#lx...\n", lp->task.routine);
>
> queue_task( &( lp->task ), &tq_immediate );
> mark_bh( IMMEDIATE_BH );
> }
>
> The problem is now that the queued task lp->task (i.e. wl_isr_handler)
> never get's called! And thus the driver does not work.
When I call run_task_queue(&tq_immediate) right after mark_bh(IMMEDIATE_BH)
then it works.
But I though "run_task_queue(&tq_immediate)" gets called by the kernel
(after every timer interrupt)...
--
Steven Scholz
imc Measurement & Control imc Meßsysteme GmbH
Voltastr. 5 Voltastr. 5
13355 Berlin 13355 Berlin
Germany Deutschland
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-04-15 8:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-13 14:08 problem with queue_task() and mark_bh() Steven Scholz
2004-04-15 8:08 ` Steven Scholz [this message]
2004-04-15 11:30 ` Steven Scholz
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