From d75684aa581a583b62a2a88f465dfbd741372193 Mon Sep 17 00:00:00 2001
From: Thomas Vachuska <tom@opennetworking.org>
Date: Wed, 3 Jan 2018 09:04:47 -0800
Subject: [PATCH] Setting dispatcher to null to pre-empt potential for
 duplicate invocations of showdownNow method.

Change-Id: I492e18a38979fa8772039b0e0bac32d6146a2041
---
 .../onosproject/openflow/controller/impl/OFChannelHandler.java   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFChannelHandler.java b/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFChannelHandler.java
index 79e391b346..2714b8e7b6 100644
--- a/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFChannelHandler.java
+++ b/protocols/openflow/ctl/src/main/java/org/onosproject/openflow/controller/impl/OFChannelHandler.java
@@ -1267,6 +1267,7 @@ class OFChannelHandler extends ChannelInboundHandlerAdapter
 
         if (dispatcher != null) {
             dispatcher.shutdownNow();
+            dispatcher = null;
         }
 
          if (thisdpid != 0) {