[3c59x] Avoid blindly reading link status twice

In order to spare some I/O operations, be more intelligent about
when to read from the PHY.

Pointed out by Bogdan Costescu.

Signed-off-by: Tommy S. Christensen <tommy.christensen@tpack.net>


--- linux-2.6.13-git8/drivers/net/3c59x.c-orig	Fri Sep  9 00:05:49 2005
+++ linux-2.6.13-git8/drivers/net/3c59x.c	Fri Sep  9 00:13:55 2005
@@ -1889,7 +1889,9 @@ vortex_timer(unsigned long data)
 		{
 			spin_lock_bh(&vp->lock);
 			mii_status = mdio_read(dev, vp->phys[0], 1);
-			mii_status = mdio_read(dev, vp->phys[0], 1);
+			if (!(mii_status & BMSR_LSTATUS))
+				/* Re-read to get actual link status */
+				mii_status = mdio_read(dev, vp->phys[0], 1);
 			ok = 1;
 			if (vortex_debug > 2)
 				printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n",