IB/Verbs: Use management helper rdma_cap_ib_sa()

Introduce helper rdma_cap_ib_sa() to help us check if the port of an
IB device support Infiniband Subnet Administration.

Signed-off-by: Michael Wang <yun.wang@profitbricks.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Tested-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 3998e8b..6d65460 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -940,7 +940,7 @@
 
 static void cma_cancel_route(struct rdma_id_private *id_priv)
 {
-	if (rdma_protocol_ib(id_priv->id.device, id_priv->id.port_num)) {
+	if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) {
 		if (id_priv->query)
 			ib_sa_cancel_query(id_priv->query_id, id_priv->query);
 	}
@@ -1964,7 +1964,7 @@
 		return -EINVAL;
 
 	atomic_inc(&id_priv->refcount);
-	if (rdma_protocol_ib(id->device, id->port_num))
+	if (rdma_cap_ib_sa(id->device, id->port_num))
 		ret = cma_resolve_ib_route(id_priv, timeout_ms);
 	else if (rdma_protocol_iboe(id->device, id->port_num))
 		ret = cma_resolve_iboe_route(id_priv);