Revert "e1000e: Fix possible HW unit hang after an s0ix exit"

This reverts commit 1866aa0d0d6492bc2f8d22d0df49abaccf50cddd.

Commit 1866aa0d0d64 ("e1000e: Fix possible HW unit hang after an s0ix
exit") was a workaround for CSME problem to handle messages comes via H2ME
mailbox. This problem has been fixed by patch "e1000e: Enable the GPT
clock before sending message to the CSME".

Fixes: 3e55d231716e ("e1000e: Add handshake with the CSME to support S0ix")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=214821
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

diff --git a/drivers/net/ethernet/intel/e1000e/hw.h b/drivers/net/ethernet/intel/e1000e/hw.h
index 13382df..bcf680e 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/hw.h
+++ b/drivers/net/ethernet/intel/e1000e/hw.h
@@ -630,7 +630,6 @@ struct e1000_phy_info {
        bool disable_polarity_correction;
        bool is_mdix;
        bool polarity_correction;
-       bool reset_disable;
        bool speed_downgraded;
        bool autoneg_wait_to_complete;
 };

diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index e6c8e6d..9466f65 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -2050,10 +2050,6 @@ static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw)
        bool blocked = false;
        int i = 0;
 
-       /* Check the PHY (LCD) reset flag */
-       if (hw->phy.reset_disable)
-               return true;
-
        while ((blocked = !(er32(FWSM) & E1000_ICH_FWSM_RSPCIPHY)) &&
               (i++ < 30))
                usleep_range(10000, 11000);

diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.h b/drivers/net/ethernet/intel/e1000e/ich8lan.h
index 638a3dd..2504b11 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.h
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.h
@@ -271,7 +271,6 @@
 #define I217_CGFREG_ENABLE_MTA_RESET   0x0002
 #define I217_MEMPWR                    PHY_REG(772, 26)
 #define I217_MEMPWR_DISABLE_SMB_RELEASE        0x0010
-#define I217_MEMPWR_MOEM               0x1000
 
 /* Receive Address Initial CRC Calculation */
 #define E1000_PCH_RAICC(_n)    (0x05F50 + ((_n) * 4))

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index c64102b..f172994 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -6991,21 +6991,8 @@ static __maybe_unused int e1000e_pm_suspend(struct device *dev)
        struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev));
        struct e1000_adapter *adapter = netdev_priv(netdev);
        struct pci_dev *pdev = to_pci_dev(dev);
-       struct e1000_hw *hw = &adapter->hw;
-       u16 phy_data;
        int rc;
 
-       if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID &&
-           hw->mac.type >= e1000_pch_adp) {
-               /* Mask OEM Bits / Gig Disable / Restart AN (772_26[12] = 1) */
-               e1e_rphy(hw, I217_MEMPWR, &phy_data);
-               phy_data |= I217_MEMPWR_MOEM;
-               e1e_wphy(hw, I217_MEMPWR, phy_data);
-
-               /* Disable LCD reset */
-               hw->phy.reset_disable = true;
-       }
-
        e1000e_flush_lpic(pdev);
 
        e1000e_pm_freeze(dev);
@@ -7027,8 +7014,6 @@ static __maybe_unused int e1000e_pm_resume(struct device *dev)
        struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev));
        struct e1000_adapter *adapter = netdev_priv(netdev);
        struct pci_dev *pdev = to_pci_dev(dev);
-       struct e1000_hw *hw = &adapter->hw;
-       u16 phy_data;
        int rc;
 
        /* Introduce S0ix implementation */
@@ -7039,17 +7024,6 @@ static __maybe_unused int e1000e_pm_resume(struct device *dev)
        if (rc)
                return rc;
 
-       if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID &&
-           hw->mac.type >= e1000_pch_adp) {
-               /* Unmask OEM Bits / Gig Disable / Restart AN 772_26[12] = 0 */
-               e1e_rphy(hw, I217_MEMPWR, &phy_data);
-               phy_data &= ~I217_MEMPWR_MOEM;
-               e1e_wphy(hw, I217_MEMPWR, phy_data);
-
-               /* Enable LCD reset */
-               hw->phy.reset_disable = false;
-       }
-
        return e1000e_pm_thaw(dev);
 }