> From: Intel-wired-lan <intel-wired-lan-boun...@osuosl.org> On Behalf Of
> Aaron Ma
> Sent: Wednesday, June 17, 2020 11:55 PM
> To: k...@kernel.org; Kirsher, Jeffrey T <jeffrey.t.kirs...@intel.com>;
> da...@davemloft.net; intel-wired-...@lists.osuosl.org;
> netdev@vger.kernel.org; linux-ker...@vger.kernel.org; Lifshits, Vitaly
> <vitaly.lifsh...@intel.com>; kai.heng.f...@canonical.com; Neftin, Sasha
> <sasha.nef...@intel.com>
> Subject: [Intel-wired-lan] [v4][PATCH] e1000e: continue to init phy even when
> failed to disable ULP
>
> After 'commit e086ba2fccda4 ("e1000e: disable s0ix entry and exit flows
> for ME systems")',
> ThinkPad P14s always failed to disable ULP by ME.
> 'commit 0c80cdbf3320 ("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: 0c80cdbf3320 ("e1000e: Warn if disabling ULP failed")
> Signed-off-by: Aaron Ma <aaron...@canonical.com>
> ---
> drivers/net/ethernet/intel/e1000e/ich8lan.c | 1 -
> 1 file changed, 1 deletion(-)
I never did find a system that triggered the initial problem, but from a
compatibility with the set of systems I do have working...
Tested-by: Aaron Brown <aaron.f.br...@intel.com>
