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authorDavid Ertman <davidx.m.ertman@intel.com>2014-05-01 06:19:03 +0400
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2014-05-06 00:03:27 +0400
commit2c9826243bebeb90a57a7946d4144a2a9a43dc39 (patch)
tree4f3997d01640b345667020a3a010541a21b8cb59 /drivers
parent7142a55c3c1fee89a60aa7b402c834b6b8afcb0a (diff)
downloadlinux-2c9826243bebeb90a57a7946d4144a2a9a43dc39.tar.xz
e1000e: Restrict MDIO Slow Mode workaround to relevant parts
It has been determined that the workaround of putting the PHY into MDIO slow mode to access the PHY id is not necessary with Lynx Point and newer parts. The issue that necessitated the workaround has been fixed on the newer hardware. We will maintains, as a last ditch attempt, the conversion to MDIO Slow Mode in the failure branch when attempting to access the PHY id so as to cover all contingencies. Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/intel/e1000e/ich8lan.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index e8587b94b138..f0bbd4246d71 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -186,7 +186,7 @@ static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw)
{
u16 phy_reg = 0;
u32 phy_id = 0;
- s32 ret_val;
+ s32 ret_val = 0;
u16 retry_count;
u32 mac_reg = 0;
@@ -217,11 +217,13 @@ static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw)
/* In case the PHY needs to be in mdio slow mode,
* set slow mode and try to get the PHY id again.
*/
- hw->phy.ops.release(hw);
- ret_val = e1000_set_mdio_slow_mode_hv(hw);
- if (!ret_val)
- ret_val = e1000e_get_phy_id(hw);
- hw->phy.ops.acquire(hw);
+ if (hw->mac.type < e1000_pch_lpt) {
+ hw->phy.ops.release(hw);
+ ret_val = e1000_set_mdio_slow_mode_hv(hw);
+ if (!ret_val)
+ ret_val = e1000e_get_phy_id(hw);
+ hw->phy.ops.acquire(hw);
+ }
if (ret_val)
return false;