batman-adv: Place kref_get for orig_ifinfo near use

It is hard to understand why the refcnt is increased when it isn't done
near the actual place the new reference is used. So using kref_get right
before the place which requires the reference and in the same function
helps to avoid accidental problems caused by incorrect reference counting.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 5108af1..8828964 100644 (file)
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -386,6 +386,7 @@ batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
        orig_ifinfo->if_outgoing = if_outgoing;
        INIT_HLIST_NODE(&orig_ifinfo->list);
        kref_init(&orig_ifinfo->refcount);
+
        kref_get(&orig_ifinfo->refcount);
        hlist_add_head_rcu(&orig_ifinfo->list,
                           &orig_node->ifinfo_list);