net: dsa: remove the dst->ds array

Now that the DSA ports are listed in the switch fabric, there is
no need to store the dsa_switch structures from the drivers in the
fabric anymore. So get rid of the dst->ds static array.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/dsa.h

@@ -125,11 +125,6 @@ struct dsa_switch_tree {
 
 	/* List of DSA links composing the routing table */
 	struct list_head rtable;
-
-	/*
-	 * Data for the individual switch chips.
-	 */
-	struct dsa_switch	*ds[DSA_MAX_SWITCHES];
 };
 
 /* TC matchall action types, only mirroring for now */

net/dsa/dsa2.c

@@ -578,25 +578,18 @@ static void dsa_tree_remove_switch(struct dsa_switch_tree *dst,
 {
 	dsa_tree_teardown(dst);
 
-	dst->ds[index] = NULL;
 	dsa_tree_put(dst);
 }
 
 static int dsa_tree_add_switch(struct dsa_switch_tree *dst,
 			       struct dsa_switch *ds)
 {
-	unsigned int index = ds->index;
 	int err;
 
-	if (dst->ds[index])
-		return -EBUSY;
-
 	dsa_tree_get(dst);
-	dst->ds[index] = ds;
 
 	err = dsa_tree_setup(dst);
 	if (err) {
-		dst->ds[index] = NULL;
 		dsa_tree_put(dst);
 	}