please test pcm channel patch

[Mathew Kanner]

On Dec 03, Sean Chittenden wrote:
> > > Hello All,
> > > 	Please test this PCM patch.  It creates seperate locking
> > > classes for PCM channels and should prevent the warning where
> > > multiple mutexes from the same class are held (as reported
> > > recently).  I believe this to be a good strategy as it masks fewer
> > > errors.
> > 
> > I can confirm that this patch fixes my LOR for pcm(4).  -sc
> 
> Bah!  I got 30min into playing tunes and picked the same LOR up not
> more than 5min after sending this. :(  Sorry for the false alarm.
> 
> acquiring duplicate lock of same type: "pcm record channel"
>  1st pcm0:record:0 @ /usr/src/sys/dev/sound/pcm/dsp.c:144
>  2nd pcm0:play:0 @ /usr/src/sys/dev/sound/pcm/dsp.c:146
> Stack backtrace:

	Bah indeed.  Gotta think some more.

	Thanks,
	--mat
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