Merge tag 'batadv-net-for-davem-20200306' of git://git.open-mesh.org/…

…linux-merge

Simon Wunderlich says:

====================
Here is a batman-adv bugfix:

 - Don't schedule OGM for disabled interface, by Sven Eckelmann
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

net/batman-adv/bat_iv_ogm.c

@@ -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