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authorBruce Allan <bruce.w.allan@intel.com>2010-05-10 15:01:30 +0000
committerDavid S. Miller <davem@davemloft.net>2010-05-12 23:31:12 -0700
commiteab50ffb222808b5053a82325be3e5d26faa08df (patch)
tree6b9b398d4631c96783af1805b01491726ae00df4 /drivers/net/e1000e
parent8b802a7e94c2ed9c6032a88b3ab9860c55cd6378 (diff)
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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>
Diffstat (limited to 'drivers/net/e1000e')
-rw-r--r--drivers/net/e1000e/ich8lan.c1
-rw-r--r--drivers/net/e1000e/phy.c21
2 files changed, 2 insertions, 20 deletions
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 61f8927..e1f244a 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 7f3ceb9..b4ac82d 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) {