From: Leon Romanovsky leonro@nvidia.com
[ Upstream commit f4e56ec4452f48b8292dcf0e1c4bdac83506fb8b ]
The error flow fixed in this patch is not possible because all kernel users of create QP interface check that device supports steering before set IB_QP_CREATE_NETIF_QP flag.
Fixes: c1c98501121e ("IB/mlx4: Add support for steerable IB UD QPs") Link: https://lore.kernel.org/r/91c61f6e60eb0240f8bbc321fda7a1d2986dd03c.163402367... Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/mlx4/qp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 4a2ef7daadeda..a8b22c08af5d3 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -1099,8 +1099,10 @@ static int create_qp_common(struct ib_pd *pd, struct ib_qp_init_attr *init_attr, if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) qp->flags |= MLX4_IB_QP_NETIF; - else + else { + err = -EINVAL; goto err; + } }
err = set_kernel_sq_size(dev, &init_attr->cap, qp_type, qp);