[PATCH 6/12] drivers/net: Add missing unlock

[PATCH 6/12] drivers/net: Add missing unlock

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Unlock the lock before leaving the function.

A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
expression E1;
identifier f;
@@

f (...) { <+...
* spin_lock_irqsave (E1,...);
... when != E1
* return ...;
...+> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 drivers/net/sgiseeq.c               |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/net/sgiseeq.c b/drivers/net/sgiseeq.c
index ed999d3..37f6a00 100644
--- a/drivers/net/sgiseeq.c
+++ b/drivers/net/sgiseeq.c
@@ -592,8 +592,10 @@ static int sgiseeq_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	/* Setup... */
 	len = skb->len;
 	if (len < ETH_ZLEN) {
-		if (skb_padto(skb, ETH_ZLEN))
+		if (skb_padto(skb, ETH_ZLEN)) {
+			spin_unlock_irqrestore(&sp->tx_lock, flags);
 			return NETDEV_TX_OK;
+		}
 		len = ETH_ZLEN;
 	}