From 51029af4d717d41eb09772cb987e88b41db4db95 Mon Sep 17 00:00:00 2001
From: Ziye Yang <optimistyzy@gmail.com>
Date: Tue, 27 Feb 2018 09:28:31 +0800
Subject: [PATCH] lib/iscsi: Add a check for poll_group

If this polling group is not initialized, we do not
need to destroy the polling group.

Change-Id: I5a94412d7f42b05d4a457c8652e2f465190fbe6e
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/401362
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
---
 lib/iscsi/iscsi_subsystem.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/iscsi/iscsi_subsystem.c b/lib/iscsi/iscsi_subsystem.c
index dabbb7e73..9390b8f3d 100644
--- a/lib/iscsi/iscsi_subsystem.c
+++ b/lib/iscsi/iscsi_subsystem.c
@@ -986,7 +986,11 @@ spdk_iscsi_fini_done(void *arg)
 void
 spdk_shutdown_iscsi_conns_done(void)
 {
-	spdk_for_each_thread(iscsi_unregister_poll_group, NULL, spdk_iscsi_fini_done);
+	if (g_spdk_iscsi.poll_group) {
+		spdk_for_each_thread(iscsi_unregister_poll_group, NULL, spdk_iscsi_fini_done);
+	} else {
+		spdk_iscsi_fini_done(NULL);
+	}
 }
 
 void