mac80211: revamp virtual interface handling

This patch revamps the virtual interface handling and makes the
code much easier to follow. Fewer functions, better names, less
spaghetti code.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index d20d90e..ee509f1 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -70,16 +70,6 @@
 
 /* statistics stuff */
 
-static inline int rtnl_lock_local(struct ieee80211_local *local)
-{
-	rtnl_lock();
-	if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) {
-		rtnl_unlock();
-		return -ENODEV;
-	}
-	return 0;
-}
-
 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...)			\
 	DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
 
@@ -96,10 +86,7 @@
 	if (!local->ops->get_stats)
 		return -EOPNOTSUPP;
 
-	res = rtnl_lock_local(local);
-	if (res)
-		return res;
-
+	rtnl_lock();
 	res = local->ops->get_stats(local_to_hw(local), &stats);
 	rtnl_unlock();
 	if (!res)