[PATCH 4.10 48/48] IB/mlx5: Verify that Q counters are supported
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2017-03-16 14:40:01
Also in:
lkml
4.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kamal Heib <redacted>
commit 45bded2c216da6010184ac5ebe88c27f73439009 upstream.
Make sure that the Q counters are supported by the FW before trying
to allocate/deallocte them, this will avoid driver load failure when
they aren't supported by the FW.
Fixes: 0837e86a7a34 ('IB/mlx5: Add per port counters')
Signed-off-by: Kamal Heib <redacted>
Reviewed-by: Mark Bloch <redacted>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/infiniband/hw/mlx5/main.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c@@ -3233,9 +3233,11 @@ static void *mlx5_ib_add(struct mlx5_cor if (err) goto err_rsrc; - err = mlx5_ib_alloc_q_counters(dev); - if (err) - goto err_odp; + if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) { + err = mlx5_ib_alloc_q_counters(dev); + if (err) + goto err_odp; + } err = ib_register_device(&dev->ib_dev, NULL); if (err)
@@ -3263,7 +3265,8 @@ err_dev: ib_unregister_device(&dev->ib_dev); err_q_cnt: - mlx5_ib_dealloc_q_counters(dev); + if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) + mlx5_ib_dealloc_q_counters(dev); err_odp: mlx5_ib_odp_remove_one(dev);
@@ -3293,7 +3296,8 @@ static void mlx5_ib_remove(struct mlx5_c mlx5_remove_netdev_notifier(dev); ib_unregister_device(&dev->ib_dev); - mlx5_ib_dealloc_q_counters(dev); + if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) + mlx5_ib_dealloc_q_counters(dev); destroy_umrc_res(dev); mlx5_ib_odp_remove_one(dev); destroy_dev_resources(&dev->devr);