[NETDRVR] lib82596, netxen: delete pointless tests from irq handler

Remove always-false tests in irq handler.

Also a few other minor cleanups.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/net/lib82596.c

@@ -1124,12 +1124,6 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
 	struct i596_dma *dma;
 	unsigned short status, ack_cmd = 0;
 
-	if (dev == NULL) {
-		printk(KERN_WARNING "%s: irq %d for unknown device.\n",
-		       __FUNCTION__, irq);
-		return IRQ_NONE;
-	}
-
 	lp = netdev_priv(dev);
 	dma = lp->dma;
 
@@ -1140,7 +1134,7 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
 
 	DEB(DEB_INTS, printk(KERN_DEBUG
 			     "%s: i596 interrupt, IRQ %d, status %4.4x.\n",
-			dev->name, irq, status));
+			dev->name, dev->irq, status));
 
 	ack_cmd = status & 0xf000;
 

drivers/net/netxen/netxen_nic_main.c

@@ -1268,17 +1268,10 @@ netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
  */
 irqreturn_t netxen_intr(int irq, void *data)
 {
-	struct netxen_adapter *adapter;
-	struct net_device *netdev;
+	struct netxen_adapter *adapter = data;
+	struct net_device *netdev = adapter->netdev;
 	u32 our_int = 0;
 
-	if (unlikely(!irq)) {
-		return IRQ_NONE;	/* Not our interrupt */
-	}
-
-	adapter = (struct netxen_adapter *)data;
-	netdev  = adapter->netdev;
-
 	if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
 		our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
 		/* not our interrupt */