netdev - [REGRESSION] e1000e probe/link detection fails since 6.2 kernel

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Date:   Tue, 28 Mar 2023 14:40:33 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>
Cc:     regressions@...ts.linux.dev, intel-wired-lan@...ts.osuosl.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [REGRESSION] e1000e probe/link detection fails since 6.2 kernel

Hi,

we've got a regression report for e1000e device on Lenovo T460p since
6.2 kernel (with openSUSE Tumbleweed).  The details are found in
  https://bugzilla.opensuse.org/show_bug.cgi?id=1209254

It seems that the driver can't detect the 1000Mbps but only 10/100Mbps
link, eventually making the device unusable.

On 6.1.12:
[    5.119117] e1000e: Intel(R) PRO/1000 Network Driver
[    5.119120] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    5.121754] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[    7.905526] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): Failed to disable ULP
[    7.988925] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock
[    8.069935] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 50:7b:9d:cf:13:43
[    8.069942] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection
[    8.072691] e1000e 0000:00:1f.6 eth0: MAC: 12, PHY: 12, PBA No: 1000FF-0FF
[   11.643919] e1000e 0000:00:1f.6 eth0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
[   15.437437] e1000e 0000:00:1f.6 eth0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

On 6.2.4:
[    4.344140] e1000e: Intel(R) PRO/1000 Network Driver
[    4.344143] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    4.344933] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[    7.113334] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): Failed to disable ULP
[    7.201715] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock
[    7.284038] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 50:7b:9d:cf:13:43
[    7.284044] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection
[    7.284125] e1000e 0000:00:1f.6 eth0: MAC: 12, PHY: 12, PBA No: 1000FF-0FF
[   10.897973] e1000e 0000:00:1f.6 eth0: NIC Link is Up 10 Mbps Full Duplex, Flow Control: None
[   10.897977] e1000e 0000:00:1f.6 eth0: 10/100 speed: disabling TSO
[   14.710059] e1000e 0000:00:1f.6 eth0: NIC Link is Up 10 Mbps Full Duplex, Flow Control: None
[   14.710064] e1000e 0000:00:1f.6 eth0: 10/100 speed: disabling TSO
[   59.894807] e1000e 0000:00:1f.6 eth0: NIC Link is Up 10 Mbps Full Duplex, Flow Control: None
[   59.894812] e1000e 0000:00:1f.6 eth0: 10/100 speed: disabling TSO
[   63.808662] e1000e 0000:00:1f.6 eth0: NIC Link is Up 10 Mbps Full Duplex, Flow Control: None
[   63.808668] e1000e 0000:00:1f.6 eth0: 10/100 speed: disabling TSO

The same problem persists with 6.3-rc3.

Can you guys check what can go wrong, or if there is a fix?


Thanks!

Takashi