[PATCH] wifi: ath10k: Fix skb leak when hl TX submission fails

[Wentao Liang]

ath10k_htt_tx_hl() takes an extra reference on the msdu with skb_get(),
which is normally dropped by ath10k_htt_htc_tx_complete(). When
ath10k_htc_send_hl() fails it does not free the skb and no completion
runs, so that reference is never released. Drop the reference on the
error path.

Fixes: c8334512f3dd ("ath10k: add htt TX bundle for sdio")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Wentao Liang <vulab@xxxxxxxxxxx>
---
 drivers/net/wireless/ath/ath10k/htt_tx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index d6f1d85ba871..24617d610297 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -1377,6 +1377,8 @@ static int ath10k_htt_tx_hl(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txm
 	tx_desc->peerid = __cpu_to_le32(HTT_INVALID_PEERID);
 
 	res = ath10k_htc_send_hl(&htt->ar->htc, htt->eid, msdu);
+	if (res)
+		dev_kfree_skb_any(msdu);
 
 out:
 	return res;
-- 
2.34.1