commit b8d866ac6aa45147b84f3f67b124b82bee675e9f
author Vivien Didelot <vivien.didelot@savoirfairelinux.com> Tue Sep 29 12:38:36 2015 -0400
committer David S. Miller <davem@davemloft.net> Tue Sep 29 21:35:06 2015 -0700
tree 9a40533604c7b4287c57d02ad67a26f431de63c3
parent 21fdd092acc7ebda0dfe682008592eb79c382707

net: dsa: fix preparation of a port STP update

Because of the default 0 value of ret in dsa_slave_port_attr_set, a
driver may return -EOPNOTSUPP from the commit phase of a STP state,
which triggers a WARN() from switchdev.

This happened on a 6185 switch which does not support hardware bridging.

Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>