From c65ab754f33c235110a34d80cd7bae9c5dde4994 Mon Sep 17 00:00:00 2001
From: Boris Zbarsky <bzbarsky@apple.com>
Date: Mon, 14 Jun 2021 18:48:01 -0400
Subject: [PATCH] Shut down InteractionModelEngine during DeviceController
 shutdown.

Otherwise if we have an IM action in flight at shutdown time we will
effectively leak the object managing it, and after a few
shutdown/restart cycles for the stack not be able to send any more IM
actions.
---
 src/controller/CHIPDeviceController.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/controller/CHIPDeviceController.cpp b/src/controller/CHIPDeviceController.cpp
index 356b5bace489ba..51e59c92eb053a 100644
--- a/src/controller/CHIPDeviceController.cpp
+++ b/src/controller/CHIPDeviceController.cpp
@@ -312,6 +312,10 @@ CHIP_ERROR DeviceController::Shutdown()
 
     mState = State::NotInitialized;
 
+    // Shut down the interaction model before we try shuttting down the exchange
+    // manager.
+    app::InteractionModelEngine::GetInstance()->Shutdown();
+
     // TODO(#6668): Some exchange has leak, shutting down ExchangeManager will cause a assert fail.
     // if (mExchangeMgr != nullptr)
     // {