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Code Issues Releases Wiki Activity

e1000e: continue to init PHY even when failed to disable ULP

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After 'commit e086ba2fcc ("e1000e: disable s0ix entry and exit flows
 for ME systems")',
ThinkPad P14s always failed to disable ULP by ME.
'commit 0c80cdbf33 ("e1000e: Warn if disabling ULP failed")'
break out of init phy:

error log:
[   42.364753] e1000e 0000:00:1f.6 enp0s31f6: Failed to disable ULP
[   42.524626] e1000e 0000:00:1f.6 enp0s31f6: PHY Wakeup cause - Unicast Packet
[   42.822476] e1000e 0000:00:1f.6 enp0s31f6: Hardware Error

When disable s0ix, E1000_FWSM_ULP_CFG_DONE will never be 1.
If continue to init phy like before, it can work as before.
iperf test result good too.

Fixes: 0c80cdbf33 ("e1000e: Warn if disabling ULP failed")
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Aaron Ma 2020-06-18 14:54:53 +08:00 committed by Tony Nguyen
parent 27a2145d6f
commit 1050242fa6
1 changed files with 1 additions and 3 deletions
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4
drivers/net/ethernet/intel/e1000e/ich8lan.c
View file

@ -301,10 +301,8 @@ static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
*/
hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_unknown;
ret_val = e1000_disable_ulp_lpt_lp(hw, true);
if (ret_val) {
if (ret_val)
e_warn("Failed to disable ULP\n");
goto out;
}
ret_val = hw->phy.ops.acquire(hw);
if (ret_val) {