From 7b77e66b07a9ce016902c5b9192e7ee10b87a796 Mon Sep 17 00:00:00 2001
From: Vladislav Bolkhovitin <vst@vlnb.net>
Date: Fri, 24 Aug 2012 18:54:35 +0000
Subject: [PATCH] Workaround (leftover?) events after disable iSNS server

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4472 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 iscsi-scst/usr/isns.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/iscsi-scst/usr/isns.c b/iscsi-scst/usr/isns.c
index 335db55b9..503697c83 100644
--- a/iscsi-scst/usr/isns.c
+++ b/iscsi-scst/usr/isns.c
@@ -971,6 +971,14 @@ static int scn_accept_connection(void)
 	socklen_t slen;
 	int fd, err, opt = 1;
 
+	if (isns_server == NULL) {
+		/*
+		 * Sometimes we have (leftover?) events after disable iSNS
+		 * server, so ignore them
+		 */
+		goto out;
+	}
+
 	slen = sizeof(from);
 	fd = accept(scn_listen_fd, &from.sa, &slen);
 	if (fd < 0) {
@@ -989,6 +997,7 @@ static int scn_accept_connection(void)
 	scn_fd = fd;
 	isns_set_fd(isns_fd, scn_listen_fd, scn_fd);
 
+out:
 	return 0;
 }