From 53c992fa8497286f24f279ebec5a8c7a58d4e68c Mon Sep 17 00:00:00 2001
From: Nick Nunley <nicholasx.d.nunley@intel.com>
Date: Wed, 17 Feb 2010 01:01:40 +0000
Subject: [PATCH] igb: ignore EEPROM APME check when shutting down serdes link
Checking the EEPROM APME state unnecessarily prevents the link from
shutting down. The standard power down routines should be
sufficient to determine whether the serdes link can power down
when going into D3.
Signed-off-by: Nicholas Nunley <nicholasx.d.nunley@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/igb/e1000_82575.c | 21 ++-------------------
1 file changed, 2 insertions(+), 19 deletions(-)
diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c
index c505b50d1fa3..59817bcc7169 100644
--- a/drivers/net/igb/e1000_82575.c
+++ b/drivers/net/igb/e1000_82575.c
@@ -791,27 +791,12 @@ static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
{
u32 reg;
- u16 eeprom_data = 0;
- if (hw->phy.media_type != e1000_media_type_internal_serdes ||
+ if (hw->phy.media_type != e1000_media_type_internal_serdes &&
igb_sgmii_active_82575(hw))
return;
- if (hw->bus.func == E1000_FUNC_0)
- hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
- else if (hw->mac.type == e1000_82580)
- hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
- NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
- &eeprom_data);
- else if (hw->bus.func == E1000_FUNC_1)
- hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
-
- /*
- * If APM is not enabled in the EEPROM and management interface is
- * not enabled, then power down.
- */
- if (!(eeprom_data & E1000_NVM_APME_82575) &&
- !igb_enable_mng_pass_thru(hw)) {
+ if (!igb_enable_mng_pass_thru(hw)) {
/* Disable PCS to turn off link */
reg = rd32(E1000_PCS_CFG0);
reg &= ~E1000_PCS_CFG_PCS_EN;
@@ -826,8 +811,6 @@ void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
wrfl();
msleep(1);
}
-
- return;
}
/**
--
2.34.1