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-rw-r--r--net/batman-adv/bat_iv_ogm.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 5b0b20e6da95..a7c8dd7ae513 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
-/* Copyright (C) 2007-2019 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*/
@@ -789,6 +789,10 @@ static void batadv_iv_ogm_schedule_buff(struct batadv_hard_iface *hard_iface)
lockdep_assert_held(&hard_iface->bat_iv.ogm_buff_mutex);
+ /* interface already disabled by batadv_iv_ogm_iface_disable */
+ if (!*ogm_buff)
+ return;
+
/* the interface gets activated here to avoid race conditions between
* the moment of activating the interface in
* hardif_activate_interface() where the originator mac is set and