openwrtv3/target/linux/mediatek/patches-4.4/0084-net-next-mediatek-invalid-buffer-lookup-in-mtk_tx_ma.patch

From 1eea1536dbbbfda418751ec6f5387acb521ddb97 Mon Sep 17 00:00:00 2001
From: John Crispin <john@phrozen.org>
Date: Sat, 23 Apr 2016 09:25:00 +0200
Subject: [PATCH 084/102] net-next: mediatek: invalid buffer lookup in
 mtk_tx_map()

The lookup of the tx_buffer in the error path inside mtk_tx_map() uses the
wrong descriptor pointer. This looks like a copy & paste error. Change the
code to use the correct pointer.

Signed-off-by: Sean Wang <keyhaede@gmail.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -686,7 +686,7 @@ static int mtk_tx_map(struct sk_buff *sk
 
 err_dma:
 	do {
-		tx_buf = mtk_desc_to_tx_buf(ring, txd);
+		tx_buf = mtk_desc_to_tx_buf(ring, itxd);
 
 		/* unmap dma */
 		mtk_tx_unmap(&dev->dev, tx_buf);