From: Justin Pettit <jpettit@nicira.com>
Date: Tue, 20 May 2008 19:43:19 +0000 (-0700)
Subject: Make sure destroy function was defined before trying to call it.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b968c34567689689ef4cfe268f2321d27bd54346;p=openvswitch

Make sure destroy function was defined before trying to call it.
---

diff --git a/datapath/chain.c b/datapath/chain.c
index 2b1178b8..c857e9a1 100644
--- a/datapath/chain.c
+++ b/datapath/chain.c
@@ -153,7 +153,8 @@ void chain_destroy(struct sw_chain *chain)
 	synchronize_rcu();
 	for (i = 0; i < chain->n_tables; i++) {
 		struct sw_table *t = chain->tables[i];
-		t->destroy(t);
+		if (t->destroy)
+			t->destroy(t);
 	}
 	module_put(chain->owner);
 	kfree(chain);