linux-kernel - Re: [fedora-arm] Banana Pi-R1 - kernel 5.6.0 and later broken

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Message-ID: <CALeDE9OwtiG2cBxeyoDdJ6g9EXZBi6MbS+MNUh-JiVod3o-3xw@mail.gmail.com>
Date:   Fri, 26 Jun 2020 10:09:53 +0100
From:   Peter Robinson <pbrobinson@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Gerhard Wiesinger <lists@...singer.com>,
        arm@...ts.fedoraproject.org, Chen-Yu Tsai <wens@...e.org>,
        LKML <linux-kernel@...r.kernel.org>, filbar@...trum.cz
Subject: Re: [fedora-arm] Banana Pi-R1 - kernel 5.6.0 and later broken - b43 DSA

On Fri, Jun 26, 2020 at 5:42 AM Florian Fainelli <f.fainelli@...il.com> wrote:
>
>
>
> On 6/25/2020 4:23 PM, Peter Robinson wrote:
> >> I'm having troubles with the Banana Pi-R1 router with newer kernels. No
> >> config changes, config works well since a lot of lernel updates ...
> >> Banana Pi-R1 is configured via systemd-networkd and uses the DSA
> >> (Distributed Switch Architecture) with b53 switch. No visible difference
> >> in interfaces, vlan config, bridge config, etc. Looks like actual
> >> configuration in the switch in the hardware is broken.
> >>
> >> # OK: Last good known version (booting that version is also ok)
> >> Linux bpi 5.5.18-200.fc31.armv7hl #1 SMP Fri Apr 17 17:25:00 UTC 2020
> >> armv7l armv7l armv7l GNU/Linux
> >>
> >> # NOK: no network
> >> Linux bpi 5.6.8-200.fc31.armv7hl #1 SMP Wed Apr 29 19:05:06 UTC 2020
> >> armv7l armv7l armv7l GNU/Linux
> >>
> >> # NOK: no network
> >> Linux bpi 5.6.0-300.fc32.armv7hl #1 SMP Mon Mar 30 16:37:50 UTC 2020
> >> armv7l armv7l armv7l GNU/Linux
> >>
> >> # NOK: no network
> >> Linux bpi 5.6.19-200.fc31.armv7hl #1 SMP Wed Jun 17 17:10:22 UTC 2020
> >> armv7l armv7l armv7l GNU/Linux
> >>
> >> # NOK: no network
> >> Linux bpi 5.7.4-200.fc32.armv7hl #1 SMP Fri Jun 19 00:52:22 UTC 2020
> >> armv7l armv7l armv7l GNU/Linux
> >>
> >>
> >> Saw that there were a lot of changes in the near past in the b53 driver:
> >>
> >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/net/dsa/b53?h=v5.8-rc1+
> >
> > So from your notes above it looks like something regressed between the
> > 5.5.x series and the 5.6.0 release? If so I'm not sure what the
> > context of the changed in 5.8 are here. If there's more changes to the
> > driver in 5.8 dev cycle have you tried one of the Fedora rawhide 5.8
> > rc1 or rc2 kernel builds to see if that resolves it?
>
> See my response to Gerhard, there are changes expected to how the
> network configuration should be done after:

It appears your response was off list, and he had follow up questions
and I don't see a response from you.

> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8fab459e69abfd04a66d76423d18ba853fced4ab
>
> >
> > Failing that looking for the change in the 5.6 cycle would likely be
> > the better bet so we can work out what broke it and report it to the
> > upstream driver maintainer. Have you searched to see if others are
> > seeing a similar issue or have reported a similar issue upstream?
> >
>
> Gerhard is doing exactly this with his email.

No, I asked if he'd searched elsewhere to see if others are having
problems, like other distros etc.