From: Shay Drory <shayd@nvidia.com>
Date: Mon, 27 Jun 2022 16:05:31 +0300
Subject: net/mlx5: Fix driver use of uninitialized timeout
Patch-mainline: v6.0-rc1
Git-commit: 42b4f7f66a43cdb9216e76e595c8a9af154806da
References: jsc#PED-1549
Currently, driver is setting default values to all timeouts during
function setup. The offending commit is using a timeout before
function setup, meaning: the timeout is 0 (or garbage), since no
value have been set.
This may result in failure to probe the driver:
mlx5_function_setup:1034:(pid 69850): Firmware over 4294967296 MS in pre-initializing state, aborting
probe_one:1591:(pid 69850): mlx5_init_one failed with error code -16
Hence, set default values to timeouts during tout_init()
Fixes: 37ca95e62ee2 ("net/mlx5: Increase FW pre-init timeout for health recovery")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c | 11 ++++-------
drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h | 1 -
drivers/net/ethernet/mellanox/mlx5/core/main.c | 2 --
3 files changed, 4 insertions(+), 10 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c
@@ -32,20 +32,17 @@ static void tout_set(struct mlx5_core_de
dev->timeouts->to[type] = val;
}
-void mlx5_tout_set_def_val(struct mlx5_core_dev *dev)
+int mlx5_tout_init(struct mlx5_core_dev *dev)
{
int i;
- for (i = 0; i < MAX_TIMEOUT_TYPES; i++)
- tout_set(dev, tout_def_sw_val[i], i);
-}
-
-int mlx5_tout_init(struct mlx5_core_dev *dev)
-{
dev->timeouts = kmalloc(sizeof(*dev->timeouts), GFP_KERNEL);
if (!dev->timeouts)
return -ENOMEM;
+ for (i = 0; i < MAX_TIMEOUT_TYPES; i++)
+ tout_set(dev, tout_def_sw_val[i], i);
+
return 0;
}
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h
@@ -35,7 +35,6 @@ int mlx5_tout_init(struct mlx5_core_dev
void mlx5_tout_cleanup(struct mlx5_core_dev *dev);
void mlx5_tout_query_iseg(struct mlx5_core_dev *dev);
int mlx5_tout_query_dtor(struct mlx5_core_dev *dev);
-void mlx5_tout_set_def_val(struct mlx5_core_dev *dev);
u64 _mlx5_tout_ms(struct mlx5_core_dev *dev, enum mlx5_timeouts_types type);
#define mlx5_tout_ms(dev, type) _mlx5_tout_ms(dev, MLX5_TO_##type##_MS)
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1050,8 +1050,6 @@ static int mlx5_function_setup(struct ml
if (mlx5_core_is_pf(dev))
pcie_print_link_status(dev->pdev);
- mlx5_tout_set_def_val(dev);
-
/* wait for firmware to accept initialization segments configurations
*/
err = wait_fw_init(dev, timeout,