Re: [bugzilla-daemon@xxxxxxxxxxxxxxxxxxx: [Bug 213481] e1000e hardware failure due to PCI patch in all kernels 5.10.36+ with Intel I219-V]

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On Tue, Jun 22, 2021 at 02:21:06PM +0200, Rafael J. Wysocki wrote:
> On Tue, Jun 22, 2021 at 12:02 AM Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote:
> >
> > FYI.  Looks like 4514d991d992 ("PCI: PM: Do not read power state in
> > pci_enable_device_flags()") appeared in v5.13-rc1, so it would be nice
> > to fix before v5.13.
> 
> I think let's revert it for now and revisit.

Sounds good.

> Do you want me to push the revert?

Sure, it'd be great if you could.  I'm traveling and don't have as
much time as usual this week.  Thanks!

> > https://bugzilla.kernel.org/show_bug.cgi?id=213481
> >
> > Initial report:
> >
> >   On the 4.19 kernel, this works perfect.  It also works perfectly in
> >   Windows.  If I reboot into 4.19, there is no problem with networking,
> >   however in 5.10, there is ZERO network connectivity.  The link NEVER
> >   comes up.  You can't assign an IP address to the interface.
> >
> >
> > From comment #2:
> >
> >   If I revert commit 4514d991d99211f225d83b7e640285f29f0755d0 (
> >   https://github.com/torvalds/linux/commit/4514d991d99211f225d83b7e640285f29f0755d0)
> >   from the 5.10.36 kernel, I do NOT have this hardware failure
> >   message.  This commit relates to PCI power state.
> >
> >   It would appear something about this change that the e1000e driver
> >   is not handling properly on this system, causing the card to not
> >   work.
> >
> >   As mentioned this is in current kernel versions (5.13, 5.11, and
> >   5.10.36+).  Given that this is a regression, a breaking change for
> >   the usability of these cards, and we know exactly what causes it for
> >   a hopefully easy fix, I've upped the severity.



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