ath9k: Fix memory leak due to failed PAPRD frames

free the skb's when the Tx of PAPRD frames fails and also add a debug
message indicating that.

Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 568f7be..9040c2f 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -325,6 +325,8 @@ static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int
 {
        struct ieee80211_hw *hw = sc->hw;
        struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+       struct ath_hw *ah = sc->sc_ah;
+       struct ath_common *common = ath9k_hw_common(ah);
        struct ath_tx_control txctl;
        int time_left;
 
@@ -342,8 +344,12 @@ static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int
        init_completion(&sc->paprd_complete);
        sc->paprd_pending = true;
        txctl.paprd = BIT(chain);
-       if (ath_tx_start(hw, skb, &txctl) != 0)
+
+       if (ath_tx_start(hw, skb, &txctl) != 0) {
+               ath_dbg(common, ATH_DBG_XMIT, "PAPRD TX failed\n");
+               dev_kfree_skb_any(skb);
                return false;
+       }
 
        time_left = wait_for_completion_timeout(&sc->paprd_complete,
                        msecs_to_jiffies(ATH_PAPRD_TIMEOUT));