net: dsa: b53: Use vlan_filtering property from dsa_switch

While possible (and safe) to use the newly introduced
dsa_port_is_vlan_filtering helper, fabricating a dsa_port pointer is a
bit awkward, so simply retrieve this from the dsa_switch structure.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/b53/b53_common.c

@@ -428,7 +428,6 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable,
 	b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 
 	dev->vlan_enabled = enable;
-	dev->vlan_filtering_enabled = enable_filtering;
 }
 
 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
@@ -665,7 +664,7 @@ int b53_configure_vlan(struct dsa_switch *ds)
 		b53_do_vlan_op(dev, VTA_CMD_CLEAR);
 	}
 
-	b53_enable_vlan(dev, false, dev->vlan_filtering_enabled);
+	b53_enable_vlan(dev, false, ds->vlan_filtering);
 
 	b53_for_each_port(dev, i)
 		b53_write16(dev, B53_VLAN_PAGE,
@@ -1318,7 +1317,7 @@ int b53_vlan_prepare(struct dsa_switch *ds, int port,
 	if (vlan->vid_end > dev->num_vlans)
 		return -ERANGE;
 
-	b53_enable_vlan(dev, true, dev->vlan_filtering_enabled);
+	b53_enable_vlan(dev, true, ds->vlan_filtering);
 
 	return 0;
 }

drivers/net/dsa/b53/b53_priv.h

@@ -139,7 +139,6 @@ struct b53_device {
 	unsigned int num_vlans;
 	struct b53_vlan *vlans;
 	bool vlan_enabled;
-	bool vlan_filtering_enabled;
 	unsigned int num_ports;
 	struct b53_port *ports;
 };