RDMA/mlx5: Use the proper number of ports

Bugzilla: https://bugzilla.redhat.com/2112940
Upstream-status: v6.0-rc2

commit 4b83c3c
Author: Mark Bloch <mbloch@nvidia.com>
Date:   Mon Aug 8 10:48:06 2022 +0300

    RDMA/mlx5: Use the proper number of ports

    The cited commit allowed the driver to operate over HCAs that have
    4 physical ports. Use the number of ports of the RDMA device in the for
    loop instead of using the struct size.

    Fixes: 4cd14d4 ("net/mlx5: Support devices with more than 2 ports")
    Link: https://lore.kernel.org/r/a54a56c2ede16044a29d119209b35189c662ac72.1659944855.git.leonro@nvidia.com
    Signed-off-by: Mark Bloch <mbloch@nvidia.com>
    Signed-off-by: Leon Romanovsky <leon@kernel.org>

Signed-off-by: Mohammad Kabat <mkabat@redhat.com>

Author: Mohammad Kabat

drivers/infiniband/hw/mlx5/main.c

@@ -2738,26 +2738,24 @@ static int set_has_smi_cap(struct mlx5_ib_dev *dev)
 	int err;
 	int port;
 
-	for (port = 1; port <= ARRAY_SIZE(dev->port_caps); port++) {
-		dev->port_caps[port - 1].has_smi = false;
-		if (MLX5_CAP_GEN(dev->mdev, port_type) ==
-		    MLX5_CAP_PORT_TYPE_IB) {
-			if (MLX5_CAP_GEN(dev->mdev, ib_virt)) {
-				err = mlx5_query_hca_vport_context(dev->mdev, 0,
-								   port, 0,
-								   &vport_ctx);
-				if (err) {
-					mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n",
-						    port, err);
-					return err;
-				}
-				dev->port_caps[port - 1].has_smi =
-					vport_ctx.has_smi;
-			} else {
-				dev->port_caps[port - 1].has_smi = true;
-			}
+	if (MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_IB)
+		return 0;
+
+	for (port = 1; port <= dev->num_ports; port++) {
+		if (!MLX5_CAP_GEN(dev->mdev, ib_virt)) {
+			dev->port_caps[port - 1].has_smi = true;
+			continue;
 		}
+		err = mlx5_query_hca_vport_context(dev->mdev, 0, port, 0,
+						   &vport_ctx);
+		if (err) {
+			mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n",
+				    port, err);
+			return err;
+		}
+		dev->port_caps[port - 1].has_smi = vport_ctx.has_smi;
 	}
+
 	return 0;
 }