Fix a copy bug introduced by
    commit 
47846c9b0c10808d9337d2e7d09361f3e0a0a71a
    Author: Johannes Berg <johannes@sipsolutions.net>
    Date:   Wed Nov 25 17:46:19 2009 +0100
        mac80211: reduce reliance on netdev
This manifested itself only in debug messages
and in the debugfs rename failure that would
always happen due to trying to rename the dir
over itself.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Tested-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
 
        sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-       memcpy(sdata->name, sdata->name, IFNAMSIZ);
+       memcpy(sdata->name, dev->name, IFNAMSIZ);
 
        ieee80211_debugfs_rename_netdev(sdata);
        return 0;