[PATCH] lockdep: fix smc91x

When booting using root-nfs, I'm seeing (independently) two lockdep dumps
in the smc91x driver.  The patch below fixes both.  Both dumps look like
real locking issues.

Nico - please review and ack if you think the patch is correct.

Dump 1:

Sending DHCP requests .
=================================
[ INFO: inconsistent lock state ]
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/smc91x.c

@@ -321,12 +321,12 @@ static void smc_reset(struct net_device *dev)
 	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
 
 	/* Disable all interrupts, block TX tasklet */
-	spin_lock(&lp->lock);
+	spin_lock_irq(&lp->lock);
 	SMC_SELECT_BANK(2);
 	SMC_SET_INT_MASK(0);
 	pending_skb = lp->pending_tx_skb;
 	lp->pending_tx_skb = NULL;
-	spin_unlock(&lp->lock);
+	spin_unlock_irq(&lp->lock);
 
 	/* free any pending tx skb */
 	if (pending_skb) {
@@ -448,12 +448,12 @@ static void smc_shutdown(struct net_device *dev)
 	DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__);
 
 	/* no more interrupts for me */
-	spin_lock(&lp->lock);
+	spin_lock_irq(&lp->lock);
 	SMC_SELECT_BANK(2);
 	SMC_SET_INT_MASK(0);
 	pending_skb = lp->pending_tx_skb;
 	lp->pending_tx_skb = NULL;
-	spin_unlock(&lp->lock);
+	spin_unlock_irq(&lp->lock);
 	if (pending_skb)
 		dev_kfree_skb(pending_skb);