Re: [Intel-wired-lan] [iwl-net v2 2/2] igb: Fix missing time sync events

[Daiwei Li]

> Of course, I'll prepare a patch for that.

Excellent, thank you!


On Fri, Aug 9, 2024 at 9:39 AM Vinicius Costa Gomes
<vinicius.gomes@xxxxxxxxx> wrote:
>
> Daiwei Li <daiweili@xxxxxxxxx> writes:
>
> > Hi,
> >
> > It appears this change breaks PTP on the 82580 controller, as ptp4l reports:
> >
> >> timed out while polling for tx timestamp increasing tx_timestamp_timeout or
> >> increasing kworker priority may correct this issue, but a driver bug likely
> >> causes it
> >
> > The 82580 controller has a hardware bug in which reading TSICR doesn't clear
> > it. See this thread
> > https://lore.kernel.org/all/CDCB8BE0.1EC2C%25matthew.vick@xxxxxxxxx/ where the
> > bug was confirmed by an Intel employee. Any chance we could add back the ack
> > for 82580 specifically? Thanks!
>
> Of course, I'll prepare a patch for that.
>
> Thanks for digging that one up.
>
>
> Cheers,
> --
> Vinicius