From e2d1813cfa2022d220cad5a0cdf1c82fca86987b Mon Sep 17 00:00:00 2001
From: Alexandre Ratchov <alex@caoua.org>
Date: Tue, 5 May 2020 06:36:48 +0200
Subject: [PATCH] sndioctl: When -m is used, print only controls that changed

---
 sndioctl/sndioctl.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/sndioctl/sndioctl.c b/sndioctl/sndioctl.c
index 54a8a97..272e7ba 100644
--- a/sndioctl/sndioctl.c
+++ b/sndioctl/sndioctl.c
@@ -885,9 +885,11 @@ onctl(void *arg, unsigned addr, unsigned val)
 	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");
+		}
 	}
 }