net/mlx5: Unify and improve command interface

Now as all commands use mlx5 ifc interface, instead of doing two calls
for executing a command we embed command status checking into
mlx5_cmd_exec to simplify the interface.

Also we do here some cleanup for redundant software structures
(inbox/outbox) and functions and improved command failure output.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

1 files changed, 3 insertions, 8 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pd.c b/drivers/net/ethernet/mellanox/mlx5/core/pd.c
index efe452c30a8d..bd830d8d6c5f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pd.c
@@ -44,11 +44,8 @@ int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn)
 
 	MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD);
 	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
-	err = err ? : mlx5_cmd_status_to_err_v2(out);
-	if (err)
-		return err;
-
-	*pdn = MLX5_GET(alloc_pd_out, out, pd);
+	if (!err)
+		*pdn = MLX5_GET(alloc_pd_out, out, pd);
 	return err;
 }
 EXPORT_SYMBOL(mlx5_core_alloc_pd);
@@ -57,11 +54,9 @@ int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn)
 {
 	u32 out[MLX5_ST_SZ_DW(dealloc_pd_out)] = {0};
 	u32 in[MLX5_ST_SZ_DW(dealloc_pd_in)]   = {0};
-	int err;
 
 	MLX5_SET(dealloc_pd_in, in, opcode, MLX5_CMD_OP_DEALLOC_PD);
 	MLX5_SET(dealloc_pd_in, in, pd, pdn);
-	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
-	return err ? : mlx5_cmd_status_to_err_v2(out);
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 }
 EXPORT_SYMBOL(mlx5_core_dealloc_pd);