===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/sndioctl/sndioctl.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -r1.8 -r1.9
--- src/usr.bin/sndioctl/sndioctl.c	2020/05/17 05:35:57	1.8
+++ src/usr.bin/sndioctl/sndioctl.c	2020/05/17 05:37:49	1.9
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sndioctl.c,v 1.8 2020/05/17 05:35:57 ratchov Exp $	*/
+/*	$OpenBSD: sndioctl.c,v 1.9 2020/05/17 05:37:49 ratchov Exp $	*/
 /*
  * Copyright (c) 2014-2020 Alexandre Ratchov <alex@caoua.org>
  *
@@ -885,9 +885,11 @@
 	for (i = infolist; i != NULL; i = i->next) {
 		if (i->ctladdr != addr)
 			continue;
-		i->curval = val;
-		if (m_flag)
-			print_ent(i, "changed");
+		if (i->curval != val) {
+			i->curval = val;
+			if (m_flag)
+				print_ent(i, "changed");
+		}
 	}
 }