Merge branch 'bridge-mrp-Update-MRP_PORT_ROLE'

Horatiu Vultur says:

====================
bridge: mrp: Update MRP_PORT_ROLE

This patch series does the following:
- fixes the enum br_mrp_port_role_type. It removes the port role none(0x2)
  because this is in conflict with the standard. The standard defines the
  interconnect port role as value 0x2.
- adds checks regarding current defined port roles: primary(0x0) and
  secondary(0x1).

v2:
 - add the validation code when setting the port role.
====================

Signed-off-by: David S. Miller <[email protected]>

Author: davem330

include/uapi/linux/mrp_bridge.h

@@ -36,7 +36,6 @@ enum br_mrp_port_state_type {
 enum br_mrp_port_role_type {
 	BR_MRP_PORT_ROLE_PRIMARY,
 	BR_MRP_PORT_ROLE_SECONDARY,
-	BR_MRP_PORT_ROLE_NONE,
 };
 
 enum br_mrp_tlv_header_type {

net/bridge/br_mrp.c

@@ -411,10 +411,16 @@ int br_mrp_set_port_role(struct net_bridge_port *p,
 	if (!mrp)
 		return -EINVAL;
 
-	if (role == BR_MRP_PORT_ROLE_PRIMARY)
+	switch (role) {
+	case BR_MRP_PORT_ROLE_PRIMARY:
 		rcu_assign_pointer(mrp->p_port, p);
-	else
+		break;
+	case BR_MRP_PORT_ROLE_SECONDARY:
 		rcu_assign_pointer(mrp->s_port, p);
+		break;
+	default:
+		return -EINVAL;
+	}
 
 	br_mrp_port_switchdev_set_role(p, role);