From: Nick Nunley Date: Wed, 17 Feb 2010 01:01:40 +0000 (+0000) Subject: igb: ignore EEPROM APME check when shutting down serdes link X-Git-Tag: firefly_0821_release~9833^2~3055^2~231 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=53c992fa8497286f24f279ebec5a8c7a58d4e68c;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- 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; } /**