linux-kernel - [PATCH net-next 3/5] mlxsw: core: Refactor code to publish devlink ops when device is ready

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Message-Id: <d22bb44311777533d903555de9559f1fe80c3802.1628599239.git.leonro@nvidia.com>
Date:   Tue, 10 Aug 2021 16:37:33 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Leon Romanovsky <leonro@...dia.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Ido Schimmel <idosch@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        linux-kernel@...r.kernel.org,
        Michael Guralnik <michaelgur@...lanox.com>,
        netdev@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Yufeng Mo <moyufeng@...wei.com>
Subject: [PATCH net-next 3/5] mlxsw: core: Refactor code to publish devlink ops when device is ready

From: Leon Romanovsky <leonro@...dia.com>

Move devlink_register() to be last command after device is fully
initialized.

Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.c | 27 +++++++++++-----------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index f080fab3de2b..a8a989070aaf 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -1974,12 +1974,6 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	if (err)
 		goto err_emad_init;
 
-	if (!reload) {
-		err = devlink_register(devlink);
-		if (err)
-			goto err_devlink_register;
-	}
-
 	if (!reload) {
 		err = mlxsw_core_params_register(mlxsw_core);
 		if (err)
@@ -2017,11 +2011,20 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	mlxsw_core->is_initialized = true;
 	devlink_params_publish(devlink);
 
-	if (!reload)
+	if (!reload) {
+		err = devlink_register(devlink);
+		if (err)
+			goto err_devlink_register;
+
 		devlink_reload_enable(devlink);
+	}
 
 	return 0;
 
+err_devlink_register:
+	devlink_params_unpublish(devlink);
+	mlxsw_core->is_initialized = false;
+	mlxsw_env_fini(mlxsw_core->env);
 err_env_init:
 	mlxsw_thermal_fini(mlxsw_core->thermal);
 err_thermal_init:
@@ -2036,9 +2039,6 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	if (!reload)
 		mlxsw_core_params_unregister(mlxsw_core);
 err_register_params:
-	if (!reload)
-		devlink_unregister(devlink);
-err_devlink_register:
 	mlxsw_emad_fini(mlxsw_core);
 err_emad_init:
 	kfree(mlxsw_core->lag.mapping);
@@ -2087,8 +2087,10 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 {
 	struct devlink *devlink = priv_to_devlink(mlxsw_core);
 
-	if (!reload)
+	if (!reload) {
 		devlink_reload_disable(devlink);
+		devlink_unregister(devlink);
+	}
 	if (devlink_is_reload_failed(devlink)) {
 		if (!reload)
 			/* Only the parts that were not de-initialized in the
@@ -2109,8 +2111,6 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 	mlxsw_core_health_fini(mlxsw_core);
 	if (!reload)
 		mlxsw_core_params_unregister(mlxsw_core);
-	if (!reload)
-		devlink_unregister(devlink);
 	mlxsw_emad_fini(mlxsw_core);
 	kfree(mlxsw_core->lag.mapping);
 	mlxsw_ports_fini(mlxsw_core, reload);
@@ -2124,7 +2124,6 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 
 reload_fail_deinit:
 	mlxsw_core_params_unregister(mlxsw_core);
-	devlink_unregister(devlink);
 	devlink_resources_unregister(devlink, NULL);
 	devlink_free(devlink);
 }
-- 
2.31.1