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Commit 27d684ec authored by Sven Eckelmann's avatar Sven Eckelmann Committed by Simon Wunderlich
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batman-adv: Place kref_get for tvlv_handler 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: default avatarSven Eckelmann <sven@narfation.org>
Signed-off-by: default avatarMarek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: default avatarSimon Wunderlich <sw@simonwunderlich.de>
parent 6913d61b

net/batman-adv/tvlv.c

+4 −0
Original line number Diff line number Diff line
@@ -547,8 +547,12 @@ void batadv_tvlv_handler_register(struct batadv_priv *bat_priv, 
	INIT_HLIST_NODE(&tvlv_handler->list);



	spin_lock_bh(&bat_priv->tvlv.handler_list_lock);

	kref_get(&tvlv_handler->refcount);

	hlist_add_head_rcu(&tvlv_handler->list, &bat_priv->tvlv.handler_list);

	spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);



	/* don't return reference to new tvlv_handler */

	batadv_tvlv_handler_put(tvlv_handler);

}



/**