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Date:      Wed, 3 Dec 2003 01:14:02 -0800
From:      Sean Chittenden <sean@chittenden.org>
To:        Mathew Kanner <mat@cnd.mcgill.ca>
Cc:        freebsd-current@FreeBSD.org
Subject:   Re: please test pcm channel patch
Message-ID:  <20031203091401.GA688@perrin.nxad.com>
In-Reply-To: <20031203090426.GH16547@perrin.nxad.com>
References:  <20031203060710.GJ54011@cnd.mcgill.ca> <20031203090426.GH16547@perrin.nxad.com>

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> > 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:

-sc

-- 
Sean Chittenden



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