linux-kernel - Re: nobody cared about IRQ 19 (firewire, on a HP 2510p notebook)

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Date:	Sun, 30 Mar 2008 21:06:41 -0400
From:	Jarod Wilson <jwilson@...hat.com>
To:	linux1394-devel@...ts.sourceforge.net
Cc:	Stefan Richter <stefanr@...6.in-berlin.de>,
	Martin Michlmayr <tbm@...ius.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: nobody cared about IRQ 19 (firewire, on a HP 2510p notebook)

On Sunday 30 March 2008 01:40:45 pm Stefan Richter wrote:
> Martin Michlmayr wrote:
> > * Stefan Richter <stefanr@...6.in-berlin.de> [2008-03-30 13:11]:
> >> Martin, please check whether the same happens if you disable
> >> firewire-ohci in the kernel config (or blacklist it in the modprobe
> >> config) and use the ohci1394 driver instead.
> >
> > Yes, I get essentially the same message with the ohci1394 driver:
> >
> > [  895.455783] irq 19: nobody cared (try booting with the "irqpoll"
> > option) [  895.455783] Pid: 0, comm: swapper Not tainted 2.6.25-rc7-amd64
> > #1 [  895.455783]
> > [  895.455783] Call Trace:
> > [  895.455783]  <IRQ>  [<ffffffff88078155>]
> > :ohci1394:ohci_irq_handler+0x4b/0x76e [  895.455783] 
> > [<ffffffff8026c883>] __report_bad_irq+0x30/0x72
> > [  895.455783]  [<ffffffff8026cac2>] note_interrupt+0x1fd/0x23f
> > [  895.455783]  [<ffffffff8026d34f>] handle_fasteoi_irq+0xa5/0xc8
> > [  895.455783]  [<ffffffff8020f53c>] do_IRQ+0x6d/0xd9
> > [  895.455783]  [<ffffffff8020c46d>] ret_from_intr+0x0/0x19
> > [  895.455783]  <EOI>  [<ffffffff803a25a4>] menu_reflect+0x0/0x75
> > [  895.455783]  [<ffffffff8800642b>]
> > :processor:acpi_idle_enter_simple+0x18d/0x1fe [  895.455783] 
> > [<ffffffff803a1b2b>] cpuidle_idle_call+0x7a/0xb3 [  895.455783] 
> > [<ffffffff803a1ab1>] cpuidle_idle_call+0x0/0xb3
> > [  895.455783]  [<ffffffff8020b06c>] cpu_idle+0xa9/0xd3
> > [  895.455783]
> > [  895.455783] handlers:
> > [  895.455783] [<ffffffff8807810a>] (ohci_irq_handler+0x0/0x76e
> > [ohci1394]) [  895.455783] Disabling IRQ #19
> >
> > dmesg is attached.
>
> Thanks.
>
> I tend to believe it is a problem to be addressed in the x86 platform
> support, not a driver problem.
>
> I Cc'd some random x86 folk...  To rehash the issue:
>
>    - Controller: Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04)
>      Board: PM965/GM965/GL960 based
>      The R5C832 is known to work with ohci1394 according to
>      http://hardware4linux.info/component/14348/ and other reports.

Its also known to work with the juju firewire stack -- that's the controller 
in my own laptop, as well as a few other folks here in the office, all 
running the new stack.



-- 
Jarod Wilson
jwilson@...hat.com
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