switchdev: Complete removal of switchdev_port_attr_get()

We have no more in tree users of switchdev_port_attr_get() after
d0e698d5 ("Merge branch 'net-Get-rid-of-switchdev_port_attr_get'")
so completely remove the function signature and body.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/switchdev.h

@@ -115,13 +115,9 @@ typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
 /**
  * struct switchdev_ops - switchdev operations
  *
- * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
- *
  * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
  */
 struct switchdev_ops {
-	int	(*switchdev_port_attr_get)(struct net_device *dev,
-					   struct switchdev_attr *attr);
 	int	(*switchdev_port_attr_set)(struct net_device *dev,
 					   const struct switchdev_attr *attr,
 					   struct switchdev_trans *trans);

net/switchdev/switchdev.c

@@ -174,48 +174,6 @@ static int switchdev_deferred_enqueue(struct net_device *dev,
 	return 0;
 }
 
-/**
- *	switchdev_port_attr_get - Get port attribute
- *
- *	@dev: port device
- *	@attr: attribute to get
- */
-int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr)
-{
-	const struct switchdev_ops *ops = dev->switchdev_ops;
-	struct net_device *lower_dev;
-	struct list_head *iter;
-	struct switchdev_attr first = {
-		.id = SWITCHDEV_ATTR_ID_UNDEFINED
-	};
-	int err = -EOPNOTSUPP;
-
-	if (ops && ops->switchdev_port_attr_get)
-		return ops->switchdev_port_attr_get(dev, attr);
-
-	if (attr->flags & SWITCHDEV_F_NO_RECURSE)
-		return err;
-
-	/* Switch device port(s) may be stacked under
-	 * bond/team/vlan dev, so recurse down to get attr on
-	 * each port.  Return -ENODATA if attr values don't
-	 * compare across ports.
-	 */
-
-	netdev_for_each_lower_dev(dev, lower_dev, iter) {
-		err = switchdev_port_attr_get(lower_dev, attr);
-		if (err)
-			break;
-		if (first.id == SWITCHDEV_ATTR_ID_UNDEFINED)
-			first = *attr;
-		else if (memcmp(&first, attr, sizeof(*attr)))
-			return -ENODATA;
-	}
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(switchdev_port_attr_get);
-
 static int __switchdev_port_attr_set(struct net_device *dev,
 				     const struct switchdev_attr *attr,
 				     struct switchdev_trans *trans)