e1000e: Incorrect function pointer set for force_speed_duplex on 82577

The force_speed_duplex function pointer was incorrectly set.  Instead of
calling the 82577-specific version it was calling the m88 version which,
among other incorrect things, reset the PHY causing autonegotiation to be
re-enabled in the PHY resulting in the link defaulting to half-duplex.
The 82577-specific force_speed_duplex function also had an issue where
it disabled Auto-MDI-X which caused the link to not come up.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 61f8927..e1f244a 100644 (file)
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -330,6 +330,7 @@ static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
                phy->ops.get_cable_length = e1000_get_cable_length_82577;
                phy->ops.get_info = e1000_get_phy_info_82577;
                phy->ops.commit = e1000e_phy_sw_reset;
+               break;
        case e1000_phy_82578:
                phy->ops.check_polarity = e1000_check_polarity_m88;
                phy->ops.force_speed_duplex = e1000e_phy_force_speed_duplex_m88;

diff --git a/drivers/net/e1000e/phy.c b/drivers/net/e1000e/phy.c
index 7f3ceb9..b4ac82d 100644 (file)
--- a/drivers/net/e1000e/phy.c
+++ b/drivers/net/e1000e/phy.c
@@ -3116,9 +3116,7 @@ s32 e1000_check_polarity_82577(struct e1000_hw *hw)
  *  e1000_phy_force_speed_duplex_82577 - Force speed/duplex for I82577 PHY
  *  @hw: pointer to the HW structure
  *
- *  Calls the PHY setup function to force speed and duplex.  Clears the
- *  auto-crossover to force MDI manually.  Waits for link and returns
- *  successful if link up is successful, else -E1000_ERR_PHY (-2).
+ *  Calls the PHY setup function to force speed and duplex.
  **/
 s32 e1000_phy_force_speed_duplex_82577(struct e1000_hw *hw)
 {
@@ -3137,23 +3135,6 @@ s32 e1000_phy_force_speed_duplex_82577(struct e1000_hw *hw)
        if (ret_val)
                goto out;
 
-       /*
-        * Clear Auto-Crossover to force MDI manually.  82577 requires MDI
-        * forced whenever speed and duplex are forced.
-        */
-       ret_val = phy->ops.read_reg(hw, I82577_PHY_CTRL_2, &phy_data);
-       if (ret_val)
-               goto out;
-
-       phy_data &= ~I82577_PHY_CTRL2_AUTO_MDIX;
-       phy_data &= ~I82577_PHY_CTRL2_FORCE_MDI_MDIX;
-
-       ret_val = phy->ops.write_reg(hw, I82577_PHY_CTRL_2, phy_data);
-       if (ret_val)
-               goto out;
-
-       e_dbg("I82577_PHY_CTRL_2: %X\n", phy_data);
-
        udelay(1);
 
        if (phy->autoneg_wait_to_complete) {