[PATCH 4.19.y] net: dsa: mt7530: disable learning on standalone ports

[DENG Qingfang]

Hi Sasha,

On Tue, Aug 24, 2021 at 11:29 PM Sasha Levin <sashal at kernel.org> wrote:
> What's the reasoning behind:
>
> 1. Backporting this patch?

Standalone ports should have address learning disabled, according to
the documentation:
https://www.kernel.org/doc/html/v5.14-rc7/networking/dsa/dsa.html#bridge-layer
dsa_switch_ops on 5.10 or earlier does not have .port_bridge_flags
function so it has to be done differently.

I've identified an issue related to this.

> 2. A partial backport of this patch?

The other part does not actually fix anything.

>
> --
> Thanks,
> Sasha