net: dsa: remove tag_protocol from dsa_switch

Having the tag protocol in dsa_switch_driver for setup time and in
dsa_switch_tree for runtime is enough. Remove dsa_switch's one.
Signed-off-by: NVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/dsa.h

@@ -135,11 +135,6 @@ struct dsa_switch {
 	 */
 	void *priv;
 
-	/*
-	 * Tagging protocol understood by this switch
-	 */
-	enum dsa_tag_protocol	tag_protocol;
-
 	/*
 	 * Configuration data for this switch.
 	 */

net/dsa/dsa.c

@@ -267,7 +267,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
 	 * switch.
 	 */
 	if (dst->cpu_switch == index) {
-		switch (ds->tag_protocol) {
+		switch (drv->tag_protocol) {
 #ifdef CONFIG_NET_DSA_TAG_DSA
 		case DSA_TAG_PROTO_DSA:
 			dst->rcv = dsa_netdev_ops.rcv;
@@ -295,7 +295,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
 			goto out;
 		}
 
-		dst->tag_protocol = ds->tag_protocol;
+		dst->tag_protocol = drv->tag_protocol;
 	}
 
 	/*
@@ -411,7 +411,6 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
 	ds->pd = pd;
 	ds->drv = drv;
 	ds->priv = priv;
-	ds->tag_protocol = drv->tag_protocol;
 	ds->master_dev = host_dev;
 
 	ret = dsa_switch_setup_one(ds, parent);