mac80211: fix debugfs key->station symlink

Since stations moved into a virtual interface
subdirectory, this link has been broken. Fix it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
index 38e6101..59edcd9 100644
--- a/net/mac80211/debugfs_key.c
+++ b/net/mac80211/debugfs_key.c
@@ -225,9 +225,9 @@
 			    key, &key_##name##_ops);
 
 void ieee80211_debugfs_key_add(struct ieee80211_key *key)
-  {
+{
 	static int keycount;
-	char buf[50];
+	char buf[100];
 	struct sta_info *sta;
 
 	if (!key->local->debugfs.keys)
@@ -244,7 +244,8 @@
 
 	sta = key->sta;
 	if (sta) {
-		sprintf(buf, "../../stations/%pM", sta->sta.addr);
+		sprintf(buf, "../../netdev:%s/stations/%pM",
+			sta->sdata->name, sta->sta.addr);
 		key->debugfs.stalink =
 			debugfs_create_symlink("station", key->debugfs.dir, buf);
 	}