[PATCH 13/16] Staging: batman-adv: Create batman_if only on register event

[Greg Kroah-Hartman]

From: Sven Eckelmann <sven.eckelmann at gmx.de>

We try to get all events for all net_devices to be able to add special
sysfs folders for the batman-adv configuration. This also includes such
events like NETDEV_POST_INIT which has no valid kobject according to
v2.6.32-rc3-13-g7ffbe3f. This would create an oops in that situation.

It is enough to create the batman_if only on NETDEV_REGISTER events
because we will also receive those events for devices which already
existed when we registered the notifier call.

Signed-off-by: Sven Eckelmann <sven.eckelmann at gmx.de>
Cc: stable <stable at kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
---
 drivers/staging/batman-adv/hard-interface.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/batman-adv/hard-interface.c b/drivers/staging/batman-adv/hard-interface.c
index f6345c4..892166b 100644
--- a/drivers/staging/batman-adv/hard-interface.c
+++ b/drivers/staging/batman-adv/hard-interface.c
@@ -393,15 +393,13 @@ static int hard_if_event(struct notifier_block *this,
 	/* FIXME: each batman_if will be attached to a softif */
 	struct bat_priv *bat_priv = netdev_priv(soft_device);
 
-	if (!batman_if)
-		batman_if = hardif_add_interface(net_dev);
+	if (!batman_if && event == NETDEV_REGISTER)
+			batman_if = hardif_add_interface(net_dev);
 
 	if (!batman_if)
 		goto out;
 
 	switch (event) {
-	case NETDEV_REGISTER:
-		break;
 	case NETDEV_UP:
 		hardif_activate_interface(soft_device, bat_priv, batman_if);
 		break;
-- 
1.7.2