[PATCH net] net/mlx4_core: Fix warnings during boot on driverinit param set failures

[PATCH net] net/mlx4_core: Fix warnings during boot on driverinit param set failures

[Tariq Toukan]

From: Moshe Shemesh <moshe@mellanox.com>

During boot, mlx4_core sets the driverinit configuration parameters and
updates the devlink module on the initial values calling
devlink_param_driverinit_value_set().
If devlink_param_driverinit_value_set() returns an error mlx4_core
reports kernel module warning.

This caused false alarm during boot in case kernel was compiled with
CONFIG_NET_DEVLINK off.
Fix by removing warning reported in case
devlink_param_driverinit_value_set() fails.

This actually makes the function mlx4_devlink_set_init_value()
redundant to using directly devlink_param_driverinit_value_set() and so
removed.

It fixes the following kernel trace:

 mlx4_core 0000:00:06.0: devlink set parameter 0 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 1 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 4 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 5 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 3 value failed (err = -95)

Fixes: bd1b51dc66df ("mlx4: Add mlx4 initial parameters table and register it")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx4/main.c | 43 +++++++++++--------------------
 1 file changed, 15 insertions(+), 28 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index d2d59444f562..6a046030e873 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -260,47 +260,34 @@ enum mlx4_devlink_param_id {
 			     NULL, NULL, NULL),
 };
 
-static void mlx4_devlink_set_init_value(struct devlink *devlink, u32 param_id,
-					union devlink_param_value init_val)
-{
-	struct mlx4_priv *priv = devlink_priv(devlink);
-	struct mlx4_dev *dev = &priv->dev;
-	int err;
-
-	err = devlink_param_driverinit_value_set(devlink, param_id, init_val);
-	if (err)
-		mlx4_warn(dev,
-			  "devlink set parameter %u value failed (err = %d)",
-			  param_id, err);
-}
-
 static void mlx4_devlink_set_params_init_values(struct devlink *devlink)
 {
 	union devlink_param_value value;
 
 	value.vbool = !!mlx4_internal_err_reset;
-	mlx4_devlink_set_init_value(devlink,
-				    DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
+					   value);
 
 	value.vu32 = 1UL << log_num_mac;
-	mlx4_devlink_set_init_value(devlink,
-				    DEVLINK_PARAM_GENERIC_ID_MAX_MACS, value);
+	devlink_param_driverinit_value_set(devlink,
+					   DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
+					   value);
 
 	value.vbool = enable_64b_cqe_eqe;
-	mlx4_devlink_set_init_value(devlink,
-				    MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
+					   value);
 
 	value.vbool = enable_4k_uar;
-	mlx4_devlink_set_init_value(devlink,
-				    MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
+					   value);
 
 	value.vbool = false;
-	mlx4_devlink_set_init_value(devlink,
-				    DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
+					   value);
 }
 
 static inline void mlx4_set_num_reserved_uars(struct mlx4_dev *dev,
-- 
1.8.3.1

Re: [PATCH net] net/mlx4_core: Fix warnings during boot on driverinit param set failures

[David Miller]

From: Tariq Toukan <tariqt@mellanox.com>
Date: Thu, 11 Oct 2018 15:01:19 +0300

> From: Moshe Shemesh <moshe@mellanox.com>
> 
> During boot, mlx4_core sets the driverinit configuration parameters and
> updates the devlink module on the initial values calling
> devlink_param_driverinit_value_set().
> If devlink_param_driverinit_value_set() returns an error mlx4_core
> reports kernel module warning.
> 
> This caused false alarm during boot in case kernel was compiled with
> CONFIG_NET_DEVLINK off.
> Fix by removing warning reported in case
> devlink_param_driverinit_value_set() fails.
> 
> This actually makes the function mlx4_devlink_set_init_value()
> redundant to using directly devlink_param_driverinit_value_set() and so
> removed.
> 
> It fixes the following kernel trace:
> 
>  mlx4_core 0000:00:06.0: devlink set parameter 0 value failed (err = -95)
>  mlx4_core 0000:00:06.0: devlink set parameter 1 value failed (err = -95)
>  mlx4_core 0000:00:06.0: devlink set parameter 4 value failed (err = -95)
>  mlx4_core 0000:00:06.0: devlink set parameter 5 value failed (err = -95)
>  mlx4_core 0000:00:06.0: devlink set parameter 3 value failed (err = -95)
> 
> Fixes: bd1b51dc66df ("mlx4: Add mlx4 initial parameters table and register it")
> Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
> Signed-off-by: Tariq Toukan <tariqt@mellanox.com>

Applied.