From c74e90a9e37c4a3923905189a6ebbd7ef61e6e67 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 8 Oct 2008 10:18:36 +0200 Subject: [PATCH] mac80211: fix debugfs netdev rename If, for some reason, a netdev has no debugfs dir, we shouldn't try to rename that dir. Signed-off-by: Johannes Berg Cc: Robin Holt Signed-off-by: John W. Linville --- net/mac80211/debugfs_netdev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 2a4515623776..2ad504fc3414 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -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); -- 2.20.1