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net: dsa: sja1105: don't assign the host port using dsa_upstream_port()
authorVladimir Oltean <vladimir.oltean@nxp.com>
Mon, 24 May 2021 13:14:16 +0000 (16:14 +0300)
committerDavid S. Miller <davem@davemloft.net>
Mon, 24 May 2021 20:59:03 +0000 (13:59 -0700)
commitdf2a81a35ebb507d8d614d993d3b55425d73ffee
tree35a2949ae11ec76a25f0f939acab9d14440a92c7tree | snapshot
parent82760d7f2ea63829d6ab0f3de7ec98b93132c8eecommit | diff
net: dsa: sja1105: don't assign the host port using dsa_upstream_port()

If @port is unused, then dsa_upstream_port(ds, port) returns @port,
which means we cannot assume the CPU port can be retrieved this way.

The sja1105 switches support a single CPU port, so just iterate over the
switch ports and stop at the first CPU port we see.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/dsa/sja1105/sja1105_main.c diff | blob | history
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