Commit b0118ced authored by Shay Drory's avatar Shay Drory Committed by Saeed Mahameed
Browse files

net/mlx5: fw_tracer, allow 0 size string DBs 



Device can expose string DB of size 0 which means this string DB is
currently not in use. Therefore, allow for 0 size string DBs.

Signed-off-by: default avatarShay Drory <shayd@nvidia.com>
Reviewed-by: default avatarMoshe Shemesh <moshe@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent 988c2352

drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c

+6 −0
Original line number Diff line number Diff line
@@ -233,6 +233,8 @@ static int mlx5_fw_tracer_allocate_strings_db(struct mlx5_fw_tracer *tracer) 
	int i;



	for (i = 0; i < num_string_db; i++) {

		if (!string_db_size_out[i])

			continue;

		tracer->str_db.buffer[i] = kzalloc(string_db_size_out[i], GFP_KERNEL);

		if (!tracer->str_db.buffer[i])

			goto free_strings_db;
@@ -278,6 +280,8 @@ static void mlx5_tracer_read_strings_db(struct work_struct *work) 
	}



	for (i = 0; i < num_string_db; i++) {

		if (!tracer->str_db.size_out[i])

			continue;

		offset = 0;

		MLX5_SET(mtrc_stdb, in, string_db_index, i);

		num_of_reads = tracer->str_db.size_out[i] /
@@ -384,6 +388,8 @@ static struct tracer_string_format *mlx5_tracer_get_string(struct mlx5_fw_tracer 
	str_ptr = tracer_event->string_event.string_param;



	for (i = 0; i < tracer->str_db.num_string_db; i++) {

		if (!tracer->str_db.size_out[i])

			continue;

		if (str_ptr > tracer->str_db.base_address_out[i] &&

		    str_ptr < tracer->str_db.base_address_out[i] +

		    tracer->str_db.size_out[i]) {