D60466.1794391579.diff
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	diff --git a/sys/dev/sound/pcm/dsp.c b/sys/dev/sound/pcm/dsp.c
	--- a/sys/dev/sound/pcm/dsp.c
	+++ b/sys/dev/sound/pcm/dsp.c
	@@ -2175,13 +2175,12 @@
	d = NULL;
	}
	}
	- bus_topo_unlock();

	- /* Exhausted the search -- nothing is locked, so return. */
	- if (d == NULL)
	+ /* Exhausted the search. */
	+ if (d == NULL) {
	+ bus_topo_unlock();
	return (EINVAL);
	-
	- /* XXX Need Giant magic entry ??? */
	+ }

	PCM_UNLOCKASSERT(d);
	PCM_LOCK(d);
	@@ -2271,6 +2270,7 @@
	ai->min_channels = 0;

	PCM_UNLOCK(d);
	+ bus_topo_unlock();

	return (0);
	}