From: Kai-Heng Feng <kai.heng.feng@canonical.com>
To: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
"open list:NETWORKING DRIVERS" <netdev@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>,
"moderated list:INTEL ETHERNET DRIVERS"
<intel-wired-lan@lists.osuosl.org>,
Jakub Kicinski <kuba@kernel.org>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [Intel-wired-lan] [PATCH] e1000e: Power cycle phy on PM resume
Date: Wed, 23 Sep 2020 22:46:25 +0800 [thread overview]
Message-ID: <AC6D77B8-244D-4816-8FFE-A4480378EC4C@canonical.com> (raw)
In-Reply-To: <17092088-86ff-2d31-b3de-2469419136a3@molgen.mpg.de>
Hi Paul,
> On Sep 23, 2020, at 21:28, Paul Menzel <pmenzel@molgen.mpg.de> wrote:
>
> Dear Kai-Heng,
>
>
> Am 23.09.20 um 09:47 schrieb Kai-Heng Feng:
>> We are seeing the following error after S3 resume:
>> [ 704.746874] e1000e 0000:00:1f.6 eno1: Setting page 0x6020
>> [ 704.844232] e1000e 0000:00:1f.6 eno1: MDI Write did not complete
>> [ 704.902817] e1000e 0000:00:1f.6 eno1: Setting page 0x6020
>> [ 704.903075] e1000e 0000:00:1f.6 eno1: reading PHY page 769 (or 0x6020 shifted) reg 0x17
>> [ 704.903281] e1000e 0000:00:1f.6 eno1: Setting page 0x6020
>> [ 704.903486] e1000e 0000:00:1f.6 eno1: writing PHY page 769 (or 0x6020 shifted) reg 0x17
>> [ 704.943155] e1000e 0000:00:1f.6 eno1: MDI Error
>> ...
>> [ 705.108161] e1000e 0000:00:1f.6 eno1: Hardware Error
>> Since we don't know what platform firmware may do to the phy, so let's
>> power cycle the phy upon system resume to resolve the issue.
>
> Is there a bug report or list thread for this issue?
No. That's why I sent a patch to start discussion :)
>
>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
>> ---
>> drivers/net/ethernet/intel/e1000e/netdev.c | 2 ++
>> 1 file changed, 2 insertions(+)
>> diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
>> index 664e8ccc88d2..c2a87a408102 100644
>> --- a/drivers/net/ethernet/intel/e1000e/netdev.c
>> +++ b/drivers/net/ethernet/intel/e1000e/netdev.c
>> @@ -6968,6 +6968,8 @@ static __maybe_unused int e1000e_pm_resume(struct device *dev)
>> !e1000e_check_me(hw->adapter->pdev->device))
>> e1000e_s0ix_exit_flow(adapter);
>> + e1000_power_down_phy(adapter);
>> +
>> rc = __e1000_resume(pdev);
>> if (rc)
>> return rc;
>
> How much does this increase the resume time?
I didn't measure it. Because for me it's more important to have a working device.
Does it have a noticeable impact on your system's resume time?
Kai-Heng
>
>
> Kind regards,
>
> Paul
>
next prev parent reply other threads:[~2020-09-23 14:46 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-23 7:47 [PATCH] e1000e: Power cycle phy on PM resume Kai-Heng Feng
2020-09-23 12:17 ` Andrew Lunn
2020-09-23 14:44 ` Kai-Heng Feng
2020-09-23 15:37 ` Andrew Lunn
2020-09-24 12:50 ` Kai-Heng Feng
2020-09-23 13:28 ` [Intel-wired-lan] " Paul Menzel
2020-09-23 14:46 ` Kai-Heng Feng [this message]
2020-09-23 15:02 ` Paul Menzel
2020-09-23 19:28 ` Andrew Lunn
2020-09-24 13:02 ` Paul Menzel
2020-09-24 15:09 ` [PATCH v2] e1000e: Increase iteration on polling MDIC ready bit Kai-Heng Feng
2020-09-24 15:32 ` [Intel-wired-lan] " Paul Menzel
2020-09-24 16:04 ` Andrew Lunn
2020-09-24 15:53 ` Andrew Lunn
2020-09-24 16:04 ` Kai-Heng Feng
2020-09-25 8:50 ` David Laight
2020-09-25 13:29 ` Andrew Lunn
2020-09-26 10:08 ` David Laight
2020-09-24 16:45 ` [PATCH v3] " Kai-Heng Feng
2020-09-24 19:57 ` Andrew Lunn
2020-09-25 3:57 ` Kai-Heng Feng
2020-09-25 5:16 ` [Intel-wired-lan] " Paul Menzel
2020-09-28 8:36 ` [PATCH v4] e1000e: Increase polling timeout on " Kai-Heng Feng
2020-09-29 13:08 ` [Intel-wired-lan] " Neftin, Sasha
2020-09-29 13:31 ` Kai-Heng Feng
2020-09-29 13:46 ` Neftin, Sasha
2020-09-29 15:08 ` Kai-Heng Feng
2020-09-29 15:11 ` David Laight
2020-09-29 15:12 ` Kai-Heng Feng
2020-09-30 6:54 ` Vitaly Lifshits
2020-10-05 6:23 ` Kai-Heng Feng
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