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net/mlx5: Fix return value from tracer initialization

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[ Upstream commit bd37c2888c ]

Check return value of mlx5_fw_tracer_start(), set error path and fix
return value of mlx5_fw_tracer_init() accordingly.

Fixes: c71ad41ccb ("net/mlx5: FW tracer, events handling")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aya Levin 2021-06-08 16:38:30 +03:00 • committed by Greg Kroah-Hartman
commit 6e1886465d
1 changed files with 9 additions and 2 deletions
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11
drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c
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@ -1019,12 +1019,19 @@ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer)
MLX5_NB_INIT(&tracer->nb, fw_tracer_event, DEVICE_TRACER);
mlx5_eq_notifier_register(dev, &tracer->nb);
mlx5_fw_tracer_start(tracer);
err = mlx5_fw_tracer_start(tracer);
if (err) {
mlx5_core_warn(dev, "FWTracer: Failed to start tracer %d\n", err);
goto err_notifier_unregister;
}
return 0;
err_notifier_unregister:
mlx5_eq_notifier_unregister(dev, &tracer->nb);
mlx5_core_destroy_mkey(dev, &tracer->buff.mkey);
err_dealloc_pd:
mlx5_core_dealloc_pd(dev, tracer->buff.pdn);
cancel_work_sync(&tracer->read_fw_strings_work);
return err;
}