From eab50ffb222808b5053a82325be3e5d26faa08df Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Mon, 10 May 2010 15:01:30 +0000 Subject: [PATCH] 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 Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/e1000e/ich8lan.c | 1 + drivers/net/e1000e/phy.c | 21 +-------------------- 2 files changed, 2 insertions(+), 20 deletions(-) diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c index 61f89275d7c3..e1f244a47807 100644 --- 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 7f3ceb9dad6a..b4ac82d51b20 100644 --- 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) { -- 2.39.2