e1000e: do not initiate autonegotiation during OEM configuration

When configuring the OEM bits in the PHY on 82577/82578, do not restart
autonegotiation if the firmware is blocking it (e.g. when an IDE-R session
is active) because the link must not go down.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 92cf10333654..eff3f4783655 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -1118,7 +1118,8 @@ static s32 e1000_oem_bits_config_ich8lan(struct e1000_hw *hw, bool d0_state)
                         oem_reg |= HV_OEM_BITS_LPLU;
         }
         /* Restart auto-neg to activate the bits */
-        oem_reg |= HV_OEM_BITS_RESTART_AN;
+        if (!e1000_check_reset_block(hw))
+                oem_reg |= HV_OEM_BITS_RESTART_AN;
         ret_val = hw->phy.ops.write_phy_reg_locked(hw, HV_OEM_BITS, oem_reg);
 
 out: