davinci_emac: off by one

This off by one error was found by smatch.

drivers/net/davinci_emac.c +2390 emac_dev_open(13) error: buffer overflow 'priv->mac_addr' 6 <= 6

---
I don't have the hardware to test this. If would be cool if someone would verify that the hardware still works after the patch is applied.

index 1605bc2..eab07cd 100644
@@ -2386,7 +2386,7 @@ static int emac_dev_open(struct net_device *ndev)
 	struct emac_priv *priv = netdev_priv(ndev);
 
 	netif_carrier_off(ndev);
-	for (cnt = 0; cnt <= ETH_ALEN; cnt++)
+	for (cnt = 0; cnt < ETH_ALEN; cnt++)
 		ndev->dev_addr[cnt] = priv->mac_addr[cnt];
 
 	/* Configuration items */

From: Dan Carpenter <[email protected]>
Date: Wed, 3 Mar 2010 10:07:24 +0300

It looks obvious enough for me, taking in more than 6 address bytes make no sense in an ethernet driver, so I'll apply this.

Thanks.