ath9k: Fix memleak on TX DMA failure

The driver-specific region has to be freed in case
of a DMA mapping failure.

Cc: stable@kernel.org
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 628b780d884493e4e4a408189f3c632befc2cc92..faf2cab49ea33de5018cd24f719286bef5dabc87 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1572,8 +1572,9 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf,
                                           skb->len, DMA_TO_DEVICE);
        if (unlikely(dma_mapping_error(sc->dev, bf->bf_dmacontext))) {
                bf->bf_mpdu = NULL;
-               DPRINTF(sc, ATH_DBG_CONFIG,
-                       "dma_mapping_error() on TX\n");
+               kfree(tx_info_priv);
+               tx_info->rate_driver_data[0] = NULL;
+               DPRINTF(sc, ATH_DBG_FATAL, "dma_mapping_error() on TX\n");
                return -ENOMEM;
        }