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 bcd8a34..ee07e7e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2026,6 +2026,7 @@
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++;