Re: ALTPATCH: 8139cp: LinkChg support

diff -Nru a/drivers/net/mii.c b/drivers/net/mii.c

--- a/drivers/net/mii.c	Fri Sep 20 02:13:15 2002
+++ b/drivers/net/mii.c	Fri Sep 20 02:13:15 2002

@@ -170,6 +170,75 @@
 	return r;
 }
 
+void mii_check_link (struct mii_if_info *mii)
+{
+	if (mii_link_ok(mii))
+		netif_carrier_on(mii->dev);
+	else
+		netif_carrier_off(mii->dev);
+}
+
+unsigned int mii_check_media (struct mii_if_info *mii, unsigned int ok_to_print)
+{
+	unsigned int old_carrier, new_carrier;
+	int advertise, lpa, media, duplex;

+
+	/* if forced media, go no further */
+	if (mii->duplex_lock)
+		return 0; /* duplex did not change */
+
+	/* check current and old link status */
+	old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0;
+	new_carrier = (unsigned int) mii_link_ok(mii);
+
+	/* if carrier state did not change, this is a "bounce",
+	 * just exit as everything is already set correctly
+	 */
+	if (old_carrier == new_carrier)
+		return 0; /* duplex did not change */
+
+	/* no carrier, nothing much to do */
+	if (!new_carrier) {
+		netif_carrier_off(mii->dev);
+		if (ok_to_print)
+			printk(KERN_INFO "%s: link down\n", mii->dev->name);
+		return 0; /* duplex did not change */
+	}
+
+	/*
+	 * we have carrier, see who's on the other end
+	 */
+	netif_carrier_on(mii->dev);
+
+	/* get MII advertise and LPA values */
+	if (mii->advertising)
+		advertise = mii->advertising;
+	else {
+		advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE);
+		mii->advertising = advertise;
+	}
+	lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);
+
+	/* figure out media and duplex from advertise and LPA values */
+	media = mii_nway_result(lpa & advertise);