Index: audio.c
===================================================================
RCS file: /cvsroot/src/sys/dev/audio.c,v
retrieving revision 1.255
diff -p -r1.255 audio.c
*** audio.c	25 Nov 2011 03:13:06 -0000	1.255
--- audio.c	2 Dec 2011 11:14:19 -0000
*************** audioattach(device_t parent, device_t se
*** 464,469 ****
--- 463,469 ----
  		    AUMODE_PLAY, AU_RING_SIZE);
  		if (error) {
  			sc->hw_if = NULL;
+ 			mutex_exit(sc->sc_lock);
  			aprint_error("audio: could not allocate play buffer\n");
  			return;
  		}
*************** audioattach(device_t parent, device_t se
*** 475,480 ****
--- 475,481 ----
  			if (sc->sc_pr.s.start != 0)
  				audio_free_ring(sc, &sc->sc_pr);
  			sc->hw_if = NULL;
+ 			mutex_exit(sc->sc_lock);
  			aprint_error("audio: could not allocate record buffer\n");
  			return;
  		}