Comment 0 for bug 1973104

[Impact]
e1000e hardware unit hang after s2idle
May 06 15:34:49 ubuntu kernel: e1000e 0000:00:1f.6 enp0s31f6: Detected Hardware Unit Hang:
                                 TDH <1>
                                 TDT <5>
                                 next_to_use <5>
                                 next_to_clean <1>
                               buffer_info[next_to_clean]:
                                 time_stamp <1000587f0>
                                 next_to_watch <1>
                                 jiffies <1000589c0>
                                 next_to_watch.status <0>
                               MAC Status <40080283>
                               PHY Status <796d>
                               PHY 1000BASE-T Status <3800>
                               PHY Extended Status <3000>
                               PCI Status <10>

[Fix]
Below commit fixes this issue
https://patchwork.ozlabs.org/project<email address hidden>/

[Test]
Verified on the target machine, and confirmed the issue is gone.

[Where problems could occur]
The impact is low, it keeps the GPT clock enabled for CSME when e1000e_pm_resume() is called. I can't see this may introduce any regression.