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mac80211: fix debugfs netdev rename

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If, for some reason, a netdev has no debugfs dir, we shouldn't
try to rename that dir.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Robin Holt <holt@sgi.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-10-08 10:18:36 +02:00 committed by John W. Linville
parent d5d7c58481
commit c74e90a9e3
1 changed files with 5 additions and 1 deletions
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6
net/mac80211/debugfs_netdev.c
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@ -545,8 +545,12 @@ static int netdev_notify(struct notifier_block *nb,
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sprintf(buf, "netdev:%s", dev->name);
dir = sdata->debugfsdir;
if (!dir)
return 0;
sprintf(buf, "netdev:%s", dev->name);
if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
"dir to %s\n", buf);