From a4935eca6dcd4e66d24fe0aee04efc4beab1a059 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 2 Mar 2016 17:23:55 -0500
Subject: [PATCH] forward-propagate Changed signals through VCA master-slave
 connections

---
 libs/ardour/gain_control.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/ardour/gain_control.cc b/libs/ardour/gain_control.cc
index 214c2bd3d6..d655b700b4 100644
--- a/libs/ardour/gain_control.cc
+++ b/libs/ardour/gain_control.cc
@@ -148,7 +148,7 @@ GainControl::add_master (boost::shared_ptr<VCA> vca)
 		*/
 
 		vca->DropReferences.connect_same_thread (masters_connections, boost::bind (&GainControl::master_going_away, this, vca));
-
+		vca->control()->Changed.connect_same_thread (masters_connections, boost::bind (&PBD::Signal0<void>::operator(), &Changed));
 	}
 
 	if (old_master_val != new_master_val) {