RDMA/mlx5: Move ports allocation to outside of INIT stage

In downstream patches we will need access to the ports before doing any
stages, in order to set net device per representor.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx5/ib_rep.c

@@ -51,6 +51,7 @@ mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 {
 	const struct mlx5_ib_profile *profile;
 	struct mlx5_ib_dev *ibdev;
+	int num_ports = 1;
 
 	if (rep->vport == MLX5_VPORT_UPLINK)
 		profile = &uplink_rep_profile;
@@ -61,10 +62,17 @@ mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 	if (!ibdev)
 		return -ENOMEM;
 
+	ibdev->port = kcalloc(num_ports, sizeof(*ibdev->port),
+			      GFP_KERNEL);
+	if (!ibdev->port) {
+		ib_dealloc_device(&ibdev->ib_dev);
+		return -ENOMEM;
+	}
+
 	ibdev->rep = rep;
 	ibdev->mdev = dev;
-	ibdev->num_ports = max(MLX5_CAP_GEN(dev, num_ports),
-			       MLX5_CAP_GEN(dev, num_vhca_ports));
+	ibdev->num_ports = num_ports;
+
 	if (!__mlx5_ib_add(ibdev, profile))
 		return -EINVAL;
 

drivers/infiniband/hw/mlx5/main.c

@@ -5844,7 +5844,6 @@ void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev)
 		srcu_barrier(&dev->mr_srcu);
 		cleanup_srcu_struct(&dev->mr_srcu);
 	}
-	kfree(dev->port);
 }
 
 int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
@@ -5853,11 +5852,6 @@ int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
 	int err;
 	int i;
 
-	dev->port = kcalloc(dev->num_ports, sizeof(*dev->port),
-			    GFP_KERNEL);
-	if (!dev->port)
-		return -ENOMEM;
-
 	for (i = 0; i < dev->num_ports; i++) {
 		spin_lock_init(&dev->port[i].mp.mpi_lock);
 		rwlock_init(&dev->port[i].roce.netdev_lock);
@@ -5865,7 +5859,7 @@ int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
 
 	err = mlx5_ib_init_multiport_master(dev);
 	if (err)
-		goto err_free_port;
+		return err;
 
 	if (!mlx5_core_mp_enabled(mdev)) {
 		for (i = 1; i <= dev->num_ports; i++) {
@@ -5906,9 +5900,6 @@ int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
 err_mp:
 	mlx5_ib_cleanup_multiport_master(dev);
 
-err_free_port:
-	kfree(dev->port);
-
 	return -ENOMEM;
 }
 
@@ -6418,6 +6409,7 @@ void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
 			profile->stage[stage].cleanup(dev);
 	}
 
+	kfree(dev->port);
 	ib_dealloc_device(&dev->ib_dev);
 }
 
@@ -6593,6 +6585,7 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 	enum rdma_link_layer ll;
 	struct mlx5_ib_dev *dev;
 	int port_type_cap;
+	int num_ports;
 
 	printk_once(KERN_INFO "%s", mlx5_version);
 
@@ -6608,13 +6601,20 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 	if (mlx5_core_is_mp_slave(mdev) && ll == IB_LINK_LAYER_ETHERNET)
 		return mlx5_ib_add_slave_port(mdev);
 
+	num_ports = max(MLX5_CAP_GEN(mdev, num_ports),
+			MLX5_CAP_GEN(mdev, num_vhca_ports));
 	dev = ib_alloc_device(mlx5_ib_dev, ib_dev);
 	if (!dev)
 		return NULL;
+	dev->port = kcalloc(num_ports, sizeof(*dev->port),
+			     GFP_KERNEL);
+	if (!dev->port) {
+		ib_dealloc_device((struct ib_device *)dev);
+		return NULL;
+	}
 
 	dev->mdev = mdev;
-	dev->num_ports = max(MLX5_CAP_GEN(mdev, num_ports),
-			     MLX5_CAP_GEN(mdev, num_vhca_ports));
+	dev->num_ports = num_ports;
 
 	return __mlx5_ib_add(dev, &pf_profile);
 }