netdev - [PATCH net-next 3/3] bonding: unwind on bond_add

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Date:	Mon,  5 Aug 2013 15:28:24 +0200
From:	Nikolay Aleksandrov <nikolay@...hat.com>
To:	netdev@...r.kernel.org
Cc:	fubar@...ibm.com, andy@...yhouse.net, davem@...emloft.net
Subject: [PATCH net-next 3/3] bonding: unwind on bond_add_vlan add failure

From: Nikolay Aleksandrov <Nikolay Aleksandrov nikolay@...hat.com>

In case of bond_add_vlan() failure currently we'll have the vlan's
refcnt bumped up in all slaves, but it will never go down because it
failed to get added to the bond, so properly unwind the added vlan if
bond_add_vlan fails.

Signed-off-by: Nikolay Aleksandrov <nikolay@...hat.com>
---
 drivers/net/bonding/bond_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index ed1d261..0f9ca7e 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -456,13 +456,13 @@ static int __bond_vlan_rx_add_vid(struct net_device *bond_dev,
 	if (res) {
 		pr_err("%s: Error: Failed to add vlan id %d\n",
 		       bond_dev->name, vid);
-		return res;
+		goto unwind;
 	}
 
 	return 0;
 
 unwind:
-	/* unwind from head to the slave that failed */
+	/* unwind from the slave that failed */
 	bond_for_each_slave_continue_reverse(bond, slave)
 		vlan_vid_del(slave->dev, proto, vid);
 
-- 
1.8.1.4

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