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net: dsa: Skip calling .port_vlan_filtering on no change

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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 <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Vladimir Oltean 2019-04-28 21:45:51 +03:00 • committed by David S. Miller
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)