From: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Date: Wed, 28 Aug 2013 02:22:53 +0000 (+0000)
Subject: igb: No PHPM support in i354 devices
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=db476e85118e2f5b24f4ccc0bdb42f0c00bde83a;p=deliverable%2Flinux.git

igb: No PHPM support in i354 devices

PHY Power Management does not exist for i354 device. So, there is no
need to read and write this register or clear go link Disconnect bit,
which could cause a lot of issues.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index b0b33a17947b..d796e297e4a7 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -1421,11 +1421,18 @@ static s32 igb_setup_copper_link_82575(struct e1000_hw *hw)
 	ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
 	wr32(E1000_CTRL, ctrl);
 
-	/* Clear Go Link Disconnect bit */
-	if (hw->mac.type >= e1000_82580) {
+	/* Clear Go Link Disconnect bit on supported devices */
+	switch (hw->mac.type) {
+	case e1000_82580:
+	case e1000_i350:
+	case e1000_i210:
+	case e1000_i211:
 		phpm_reg = rd32(E1000_82580_PHY_POWER_MGMT);
 		phpm_reg &= ~E1000_82580_PM_GO_LINKD;
 		wr32(E1000_82580_PHY_POWER_MGMT, phpm_reg);
+		break;
+	default:
+		break;
 	}
 
 	ret_val = igb_setup_serdes_link_82575(hw);