cfg80211: move world roaming check for beacon hints

We should not add new beacon hints even if the wiphy
is not world roaming. Without this we were always adding
a beacon hint if not world roaming for every non world
roaming wiphy interface.

Tested-by: Ben Greear <greearb@candelatech.com>
Reported-by: Ben Greear <greearb@candelatech.com>
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[fix locking]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index b68eeef45e6c..0b35de001937 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1044,6 +1044,9 @@ static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx,
 
         chan->beacon_found = true;
 
+        if (!reg_is_world_roaming(wiphy))
+                return;
+
         if (wiphy->flags & WIPHY_FLAG_DISABLE_BEACON_HINTS)
                 return;
 
@@ -1110,8 +1113,6 @@ static void reg_process_beacons(struct wiphy *wiphy)
          */
         if (!last_request)
                 return;
-        if (!reg_is_world_roaming(wiphy))
-                return;
         wiphy_update_beacon_reg(wiphy);
 }
 
@@ -1593,11 +1594,8 @@ static void reg_process_pending_beacon_hints(void)
         struct cfg80211_registered_device *rdev;
         struct reg_beacon *pending_beacon, *tmp;
 
-        /*
-         * No need to hold the reg_mutex here as we just touch wiphys
-         * and do not read or access regulatory variables.
-         */
         mutex_lock(&cfg80211_mutex);
+        mutex_lock(&reg_mutex);
 
         /* This goes through the _pending_ beacon list */
         spin_lock_bh(&reg_pending_beacons_lock);
@@ -1615,6 +1613,7 @@ static void reg_process_pending_beacon_hints(void)
         }
 
         spin_unlock_bh(&reg_pending_beacons_lock);
+        mutex_unlock(&reg_mutex);
         mutex_unlock(&cfg80211_mutex);
 }