mac80211: fix notify_mac function

The ieee80211_notify_mac() function uses ieee80211_sta_req_auth() which
in turn calls ieee80211_set_disassoc() which calls a few functions that
need to be able to sleep, so ieee80211_notify_mac() cannot use RCU
locking for the interface list and must use rtnl locking instead.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 87665d7bb4f9..14d165f0df75 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2570,14 +2570,14 @@ void ieee80211_notify_mac(struct ieee80211_hw *hw,
 
         switch (notif_type) {
         case IEEE80211_NOTIFY_RE_ASSOC:
-                rcu_read_lock();
-                list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+                rtnl_lock();
+                list_for_each_entry(sdata, &local->interfaces, list) {
                         if (sdata->vif.type != NL80211_IFTYPE_STATION)
                                 continue;
 
                         ieee80211_sta_req_auth(sdata, &sdata->u.sta);
                 }
-                rcu_read_unlock();
+                rtnl_unlock();
                 break;
         }
 }