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net/mlx5: Delete impossible dev->state checks 

New mlx5_core device structure is allocated through devlink_alloc
with\ kzalloc and that ensures that all fields are equal to zero
and it includes ->state too.

That means that checks of that field in the mlx5_init_one() is
completely redundant, because that function is called only once
in the begging of mlx5_core_dev lifetime.

PCI:
 .probe()
  -> probe_one()
   -> mlx5_init_one()

The recovery flow can't run at that time or before it, because relevant
work initialized later in mlx5_init_once().

Such initialization flow ensures that dev->state can't be
MLX5_DEVICE_STATE_UNINITIALIZED at all, so remove such impossible
checks.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Leon Romanovsky 2021-08-01 11:37:57 +03:00 committed by Saeed Mahameed
parent 90b85d4e31
commit 8e792700b9
3 changed files with 1 additions and 12 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/health.c
View File

@ -213,10 +213,6 @@ void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force)
mutex_lock(&dev->intf_state_mutex);
if (!err_detected && dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
goto unlock;/* a previous error is still being handled */
if (dev->state == MLX5_DEVICE_STATE_UNINITIALIZED) {
dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
goto unlock;
}
enter_error_state(dev, force);
unlock:

6
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@ -1249,11 +1249,6 @@ int mlx5_init_one(struct mlx5_core_dev *dev)
int err = 0;
mutex_lock(&dev->intf_state_mutex);
if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) {
mlx5_core_warn(dev, "interface is up, NOP\n");
goto out;
}
/* remove any previous indication of internal error */
dev->state = MLX5_DEVICE_STATE_UP;
err = mlx5_function_setup(dev, true);
@ -1294,7 +1289,6 @@ function_teardown:
mlx5_function_teardown(dev, true);
err_function:
dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
out:
mutex_unlock(&dev->intf_state_mutex);
return err;
}

3
include/linux/mlx5/driver.h
View File

@ -623,8 +623,7 @@ struct mlx5_priv {
};
enum mlx5_device_state {
MLX5_DEVICE_STATE_UNINITIALIZED,
MLX5_DEVICE_STATE_UP,
MLX5_DEVICE_STATE_UP = 1,
MLX5_DEVICE_STATE_INTERNAL_ERROR,
};