[PATCH 22.03] mvebu: cortexa9: disable devices using broken mv88e6176 switch

[Klaus Kudielka]

I believe this is the same bug I reported upstream in October '20 (but
nobody was able to reproduce):

https://bugzilla.kernel.org/show_bug.cgi?id=209487


Quoting myself (Comment 11):
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The issue seems to be finally solved by acceptance of the "RX filtering in
DSA" patch series (thanks to Tobias Waldekranz & Vladimir Oltean).

https://lore.kernel.org/netdev/20210629140658.2510288-1-olteanv@gmail.com/

I tested this with 5.14-rc3 on a Turris Omnia. Traffic from a DSA switch
port, addressed to the bridge, is not flooded anymore to other DSA switch
ports - even if unicast flooding is turned on.
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So, I guess this would be the series to backport.


Regards, Klaus