tlan: Restart autonegotiation on link loss

When link is lost on a card which uses internal PHY for 10 Mbit speeds,
restart autonegotiation to allow switching between 10 and 100 Mbps speeds.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index cacc76da91a2060327e830294e7609c4a851c014..3b8364568a6a222c07413f59c15b09cc57bc2389 100644 (file)
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c
@@ -2720,6 +2720,7 @@ static void tlan_phy_finish_auto_neg(struct net_device *dev)
        else if (!(mode & 0x0080) && (mode & 0x0040))
                priv->tlan_full_duplex = true;
 
+       /* switch to internal PHY for 10 Mbps */
        if ((!(mode & 0x0180)) &&
            (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
            (priv->phy_num != 0)) {
@@ -2787,6 +2788,21 @@ static void tlan_phy_monitor(unsigned long data)
                               dev->name);
                        tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
                        netif_carrier_off(dev);
+                       if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
+                               /* power down internal PHY */
+                               u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
+                                          MII_GC_ISOLATE;
+
+                               tlan_mii_sync(dev->base_addr);
+                               tlan_mii_write_reg(dev, priv->phy[0],
+                                                  MII_GEN_CTL, data);
+                               /* set to external PHY */
+                               priv->phy_num = 1;
+                               /* restart autonegotiation */
+                               tlan_set_timer(dev, 4 * HZ / 10,
+                                              TLAN_TIMER_PHY_PDOWN);
+                               return;
+                       }
                }
        }