From: Mark Zhang <markzhang@nvidia.com>
Date: Thu, 20 Apr 2023 01:39:06 +0000 (+0300)
Subject: RDMA/mlx5: Use correct device num_ports when modify DC
X-Git-Tag: v6.1.37~1518
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=07ad6cc82b3c9a0975b86367374d9b2124ba7bc6;p=platform%2Fkernel%2Flinux-starfive.git

RDMA/mlx5: Use correct device num_ports when modify DC

[ Upstream commit 746aa3c8cb1a650ff2583497ac646e505831b9b9 ]

Just like other QP types, when modify DC, the port_num should be compared
with dev->num_ports, instead of HCA_CAP.num_ports.  Otherwise Multi-port
vHCA on DC may not work.

Fixes: 776a3906b692 ("IB/mlx5: Add support for DC target QP")
Link: https://lore.kernel.org/r/20230420013906.1244185-1-markzhang@nvidia.com
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index cf953d2..f7d3643 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -4408,7 +4408,7 @@ static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 			return -EINVAL;
 
 		if (attr->port_num == 0 ||
-		    attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
+		    attr->port_num > dev->num_ports) {
 			mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
 				    attr->port_num, dev->num_ports);
 			return -EINVAL;