[PATCH] Fix tx-queue-size on NBG6817 (allows MTU changes).

[Ansuel Smith]

>
>
> On 19/09/2020 15:06, Paul Oranje wrote:
> > See below, regards,
> > Paul
> >
> >
> >> Op 15 sep. 2020, om 21:56 heeft jacekowski at jacekowski.org het volgende geschreven:
> > The subject does not to comply with the rules for that, it should at least start with the target, better would be:
> >       ipq806x: fix tx-queue-size on NBG6817
>
> I was not aware of that.
>
> >> From: Jacek Milewicz <jacekowski at jacekowski.org>
> >>
> >> Fixes FS#3285 for NBG6817 only.
> > Why is that ?
>
> Because on IPQ806x SoC it is impossible to detect correct value,
> therefore it has to be set for each device in device tree (which is what
> this patch is doing).
>
> On most IPQ806x devices correct value has to be determined manually by
> trying few most common values and seeing what works (4k seems to be most
> common).
>

Can I ask you how you found out and how to check if a bad value is set?
Is this set by default on the OEM firmware? Any test or something?