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-rw-r--r--net/wireless/reg.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index fd53d975c0bc..2a3ae4d1001d 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1925,11 +1925,23 @@ static bool freq_is_chan_12_13_14(u16 freq)
return false;
}
+static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan)
+{
+ struct reg_beacon *pending_beacon;
+
+ list_for_each_entry(pending_beacon, &reg_pending_beacons, list)
+ if (beacon_chan->center_freq ==
+ pending_beacon->chan.center_freq)
+ return true;
+ return false;
+}
+
int regulatory_hint_found_beacon(struct wiphy *wiphy,
struct ieee80211_channel *beacon_chan,
gfp_t gfp)
{
struct reg_beacon *reg_beacon;
+ bool processing;
if (beacon_chan->beacon_found ||
beacon_chan->flags & IEEE80211_CHAN_RADAR ||
@@ -1937,6 +1949,13 @@ int regulatory_hint_found_beacon(struct wiphy *wiphy,
!freq_is_chan_12_13_14(beacon_chan->center_freq)))
return 0;
+ spin_lock_bh(&reg_pending_beacons_lock);
+ processing = pending_reg_beacon(beacon_chan);
+ spin_unlock_bh(&reg_pending_beacons_lock);
+
+ if (processing)
+ return 0;
+
reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp);
if (!reg_beacon)
return -ENOMEM;