From 7d5671a4117d8d95ecad5073430e591b7c5e02bf Mon Sep 17 00:00:00 2001
From: Len Ovens <len@ovenwerks.net>
Date: Wed, 3 Feb 2016 10:35:35 -0800
Subject: [PATCH] mackie control: Fix crash when selecting Track on MIDI strip,
 don't create phase control if there is none.

---
 libs/ardour/ardour/route.h |  6 ++----
 libs/ardour/route.cc       | 10 ++++++++++
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/libs/ardour/ardour/route.h b/libs/ardour/ardour/route.h
index 84d78fcdd3..92e073e81a 100644
--- a/libs/ardour/ardour/route.h
+++ b/libs/ardour/ardour/route.h
@@ -497,10 +497,6 @@ class LIBARDOUR_API Route : public SessionObject, public Automatable, public Rou
 		return _mute_master;
 	}
 
-	boost::shared_ptr<PhaseControllable> phase_control() const {
-		return _phase_control;
-	}
-
 	boost::shared_ptr<SoloIsolateControllable> solo_isolate_control() const {
 		return _solo_isolate_control;
 	}
@@ -527,6 +523,8 @@ class LIBARDOUR_API Route : public SessionObject, public Automatable, public Rou
 	boost::shared_ptr<Pannable> pannable() const;
 	boost::shared_ptr<GainControl> trim_control() const;
 
+	boost::shared_ptr<PhaseControllable> phase_control() const;
+
 	/**
 	   Return the first processor that accepts has at least one MIDI input
 	   and at least one audio output. In the vast majority of cases, this
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 79fbeb546e..001281f8f4 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -4209,6 +4209,16 @@ Route::trim_control() const
 	return _trim_control;
 }
 
+boost::shared_ptr<Route::PhaseControllable>
+Route::phase_control() const
+{
+	if (phase_invert().size()) {
+		return _phase_control;
+	} else {
+		return boost::shared_ptr<PhaseControllable>();
+	}
+}
+
 boost::shared_ptr<AutomationControl>
 Route::get_control (const Evoral::Parameter& param)
 {