From: Fabrice Gasnier <fabrice.gasnier@st.com>
Date: Tue, 4 Nov 2014 16:08:06 +0000 (+0100)
Subject: stmmac: release tx lock, in case of dma mapping error.
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=758a0ab59b9bed75d8c8fcaed3cb41f10a586793;p=linux-beck.git

stmmac: release tx lock, in case of dma mapping error.

Add missing spin_unlock when tx frames gets dropped.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index bcd8a3414722..ee07e7eee647 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2026,6 +2026,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 	return NETDEV_TX_OK;
 
 dma_map_err:
+	spin_unlock(&priv->tx_lock);
 	dev_err(priv->device, "Tx dma map failed\n");
 	dev_kfree_skb(skb);
 	priv->dev->stats.tx_dropped++;