e1000: fix spinlock bug

This patch fixes an obvious and nasty bug where we could exit the transmit
routine while holding tx_lock.

Signed-off-by:  Mitch Williams <mitch.a.williams@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 325495b8b60c..137226d98d47 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2307,6 +2307,7 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
         tso = e1000_tso(adapter, skb);
         if (tso < 0) {
                 dev_kfree_skb_any(skb);
+                spin_unlock_irqrestore(&adapter->tx_lock, flags);
                 return NETDEV_TX_OK;
         }