From: Todd Fujinaka <todd.fujinaka@intel.com>
Date: Thu, 8 May 2014 23:20:24 +0000 (+0000)
Subject: igb: remove redundant PHY power down register write
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=18cae6f7bb65bdb272f844525f7acd6d464a8541;p=linux-beck.git

igb: remove redundant PHY power down register write

One of the registers used to power down the PHY was found to be wrong
(should be bit 2 not bit 1) on further inspection it was also found to
be redundant.

Signed-off-by: Todd Fujinaka <todd.fujinaka@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_phy.c b/drivers/net/ethernet/intel/igb/e1000_phy.c
index 424f16c43759..c1bb64d8366f 100644
--- a/drivers/net/ethernet/intel/igb/e1000_phy.c
+++ b/drivers/net/ethernet/intel/igb/e1000_phy.c
@@ -2204,16 +2204,10 @@ s32 igb_phy_init_script_igp3(struct e1000_hw *hw)
 void igb_power_up_phy_copper(struct e1000_hw *hw)
 {
 	u16 mii_reg = 0;
-	u16 power_reg = 0;
 
 	/* The PHY will retain its settings across a power down/up cycle */
 	hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg);
 	mii_reg &= ~MII_CR_POWER_DOWN;
-	if (hw->phy.type == e1000_phy_i210) {
-		hw->phy.ops.read_reg(hw, GS40G_COPPER_SPEC, &power_reg);
-		power_reg &= ~GS40G_CS_POWER_DOWN;
-		hw->phy.ops.write_reg(hw, GS40G_COPPER_SPEC, power_reg);
-	}
 	hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);
 }
 
@@ -2227,18 +2221,10 @@ void igb_power_up_phy_copper(struct e1000_hw *hw)
 void igb_power_down_phy_copper(struct e1000_hw *hw)
 {
 	u16 mii_reg = 0;
-	u16 power_reg = 0;
 
 	/* The PHY will retain its settings across a power down/up cycle */
 	hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg);
 	mii_reg |= MII_CR_POWER_DOWN;
-
-	/* i210 Phy requires an additional bit for power up/down */
-	if (hw->phy.type == e1000_phy_i210) {
-		hw->phy.ops.read_reg(hw, GS40G_COPPER_SPEC, &power_reg);
-		power_reg |= GS40G_CS_POWER_DOWN;
-		hw->phy.ops.write_reg(hw, GS40G_COPPER_SPEC, power_reg);
-	}
 	hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);
 	usleep_range(1000, 2000);
 }
diff --git a/drivers/net/ethernet/intel/igb/e1000_phy.h b/drivers/net/ethernet/intel/igb/e1000_phy.h
index fe921e29dda8..7af4ffab0285 100644
--- a/drivers/net/ethernet/intel/igb/e1000_phy.h
+++ b/drivers/net/ethernet/intel/igb/e1000_phy.h
@@ -151,7 +151,6 @@ s32  igb_check_polarity_m88(struct e1000_hw *hw);
 #define GS40G_MAC_LB			0x4140
 #define GS40G_MAC_SPEED_1G		0X0006
 #define GS40G_COPPER_SPEC		0x0010
-#define GS40G_CS_POWER_DOWN		0x0002
 #define GS40G_LINE_LB			0x4000
 
 /* SFP modules ID memory locations */