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net: dsa: Skip calling .port_vlan_filtering on no change 

Even if VLAN filtering is global, DSA will call this callback once per
each port. Drivers should not have to compare the global state with the
requested change. So let DSA do it.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2019-04-28 21:45:51 +03:00 committed by David S. Miller
parent 2a1305515b
commit ec9121e7d2
1 changed files with 3 additions and 0 deletions
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3
net/dsa/port.c
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@ -203,6 +203,9 @@ int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
if (!dsa_port_can_apply_vlan_filtering(dp, vlan_filtering))
return -EINVAL;
if (dsa_port_is_vlan_filtering(dp) == vlan_filtering)
return 0;
err = ds->ops->port_vlan_filtering(ds, dp->index,
vlan_filtering);
if (err)