From 42b4f7f66a43cdb9216e76e595c8a9af154806da Mon Sep 17 00:00:00 2001 From: Shay Drory Date: Mon, 27 Jun 2022 16:05:31 +0300 Subject: [PATCH] net/mlx5: Fix driver use of uninitialized timeout 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 Reviewed-by: Moshe Shemesh Signed-off-by: Saeed Mahameed --- 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(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c index d758848..696e45e 100644 --- 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_dev *dev, u64 val, enum mlx5_timeouts_type 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; } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h index 257c03e..bc9e9ae 100644 --- 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 *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) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 95f2662..ba2e523 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -1023,8 +1023,6 @@ static int mlx5_function_setup(struct mlx5_core_dev *dev, u64 timeout) 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, -- 2.7.4