Index: channel.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/sound/pcm/channel.c,v
retrieving revision 1.93
diff -u -r1.93 channel.c
--- channel.c	5 Dec 2003 02:08:13 -0000	1.93
+++ channel.c	24 Jan 2004 20:05:21 -0000
@@ -115,11 +115,19 @@
 static void
 chn_wakeup(struct pcm_channel *c)
 {
-    	struct snd_dbuf *bs = c->bufsoft;
+	struct snd_dbuf *bs = c->bufsoft;
+	struct pcmchan_children *pce;
+
+	//	CHN_LOCKASSERT(c);
+	if (SLIST_EMPTY(&c->children)) {
+		if (SEL_WAITING(sndbuf_getsel(bs)) && chn_polltrigger(c))
+			selwakeup(sndbuf_getsel(bs));
+	} else {
+		SLIST_FOREACH(pce, &c->children, link) {
+			chn_wakeup(pce->channel);
+		}
+	}
 
-	CHN_LOCKASSERT(c);
-	if (SEL_WAITING(sndbuf_getsel(bs)) && chn_polltrigger(c))
-		selwakeuppri(sndbuf_getsel(bs), PRIBIO);
 	wakeup(bs);
 }