netdev - [PATCH] netdev: change name dropping error codes

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Message-ID: <20081017213006.385c45cd@extreme>
Date:	Fri, 17 Oct 2008 21:30:06 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: [PATCH] netdev: change name dropping error codes

If changename notifier returns an error code, it gets incorrectly
cleared during rollback so the error is never returned to the user.
Found while testing similar code for MTU changes.

Signed-off-by: Stephen Hemminger <shemminger@...tta.com>


--- a/net/core/dev.c	2008-10-17 18:59:11.000000000 -0700
+++ b/net/core/dev.c	2008-10-17 21:22:30.000000000 -0700
@@ -924,10 +924,10 @@ int dev_change_name(struct net_device *d
 		strlcpy(dev->name, newname, IFNAMSIZ);
 
 rollback:
-	err = device_rename(&dev->dev, dev->name);
-	if (err) {
+	ret = device_rename(&dev->dev, dev->name);
+	if (ret) {
 		memcpy(dev->name, oldname, IFNAMSIZ);
-		return err;
+		return ret;
 	}
 
 	write_lock_bh(&dev_base_lock);
--
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