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-rw-r--r--drivers/net/ethernet/mscc/ocelot.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index a891bccb3a41..344539c0d3aa 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -261,8 +261,15 @@ static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
port->pvid = vid;
/* Untagged egress vlan clasification */
- if (untagged)
+ if (untagged && port->vid != vid) {
+ if (port->vid) {
+ dev_err(ocelot->dev,
+ "Port already has a native VLAN: %d\n",
+ port->vid);
+ return -EBUSY;
+ }
port->vid = vid;
+ }
ocelot_vlan_port_apply(ocelot, port);