snd_hda + ath = hard hang

[Ariff Abdullah]

On Mon, 3 Dec 2007 11:29:43 +0200
Kostik Belousov <kostikbel at gmail.com> wrote:
> On Mon, Dec 03, 2007 at 01:20:53AM +0800, Ariff Abdullah wrote:
> > On Sun, 25 Nov 2007 22:19:15 +0200
> > Kostik Belousov <kostikbel at gmail.com> wrote:
> > > I have a laptop that shares interrupt between ath0 and snd_hda0
> > > devices. Machine works under the RELENG_6 normally. Now, on the
> > > RELENG_7 (and CURRENT), attempt to ifconfig ath0 up usualy hangs
> > > the machine in the next 2-5 minutes.
> > > 
> > > Hang is hard, I even cannot switch the console to look at the
> > > kernel messages or enter the ddb. Also, laptop does not have a
> > > serial port.
> > > 
> > > Not setting the ath0 up, or, unloading snd_hda.ko before
> > > activating the interface, allows machine to work. Wireless works
> > > without problem, interrupt rate is as expected.
> > > 
> > > Any advice ?
> > > 
> > 
> > Try enabling msi via hint.pcm.%d.msi="1" . It is disabled by
> > default due to too many broken msi.
> > 
> > There is a poor man polling mode which can be enabled through
> > sysctl dev.pcm.%d.polling=1, but I won't recommend this for
> > typical usage (unless to debug this kind of weird issues).
> > 
> > This regression probably originated from somewhere else since you
> > said it was working fine under RELENG_6.
> 
> I filled the PR 118316, see there for some kind of
> workaround/solution. It seems that removing INTR_FILTER from kernel
> config solves it.
> 

ah.. ok. Thanks.


--
Ariff Abdullah
FreeBSD

... Recording in stereo is obviously too advanced
    and confusing for us idiot ***** users :P ........
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