rt2x00: Properly clean up beacon skbs.

The skbs containing the beacons weren't properly cleaned up for rt2400pci, rt2500pci,
rt61pci, and rt73usb. Clean up those skbs in the manner appropriate for each driver.

Signed-off-by: Gertjan van Wingerde <gwingerde@kpnplanet.nl>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 18 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index f9e75319770a..b8e0c4c3ed0a 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -474,6 +474,12 @@ static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
             vif->type != IEEE80211_IF_TYPE_IBSS)
                 return;
 
+        /*
+         * Clean up the beacon skb.
+         */
+        dev_kfree_skb_irq(intf->beacon->skb);
+        intf->beacon->skb = NULL;
+
         spin_lock(&intf->lock);
         intf->delayed_flags |= DELAYED_UPDATE_BEACON;
         spin_unlock(&intf->lock);
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 5b7267ece1b9..27f30ae8f52b 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -2402,6 +2402,12 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
                                       skb->data, skb->len);
         rt61pci_kick_tx_queue(rt2x00dev, QID_BEACON);
 
+        /*
+         * Clean up beacon skb.
+         */
+        dev_kfree_skb_any(skb);
+        intf->beacon->skb = NULL;
+
         return 0;
 }
 
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index fceefd730ab8..42b7e98b2d27 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -2001,6 +2001,12 @@ static int rt73usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
                                  REGISTER_TIMEOUT32(skb->len));
         rt73usb_kick_tx_queue(rt2x00dev, QID_BEACON);
 
+        /*
+         * Clean up the beacon skb.
+         */
+        dev_kfree_skb(skb);
+        intf->beacon->skb = NULL;
+
         return 0;
 }