please test pcm channel patch

[Sean Chittenden]

> 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

-- 
Sean Chittenden