mlxsw: core: Move port module events enablement to a separate function

Use a separate function for enablement of port module events such
plug/unplug and temperature threshold crossing. The motivation is to
reuse the function for line cards.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/core_env.c

@@ -1148,6 +1148,28 @@ static void mlxsw_env_line_cards_free(struct mlxsw_env *env)
 		kfree(env->line_cards[i]);
 }
 
+static int
+mlxsw_env_module_event_enable(struct mlxsw_env *mlxsw_env, u8 slot_index)
+{
+	int err;
+
+	err = mlxsw_env_module_oper_state_event_enable(mlxsw_env->core,
+						       slot_index);
+	if (err)
+		return err;
+
+	err = mlxsw_env_module_temp_event_enable(mlxsw_env->core, slot_index);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static void
+mlxsw_env_module_event_disable(struct mlxsw_env *mlxsw_env, u8 slot_index)
+{
+}
+
 static int
 mlxsw_env_module_type_set(struct mlxsw_core *mlxsw_core, u8 slot_index)
 {
@@ -1220,13 +1242,13 @@ int mlxsw_env_init(struct mlxsw_core *mlxsw_core, struct mlxsw_env **p_env)
 	 * is to be set after line card is activated.
 	 */
 	env->line_cards[0]->module_count = num_of_slots ? 0 : module_count;
-	err = mlxsw_env_module_oper_state_event_enable(mlxsw_core, 0);
-	if (err)
-		goto err_oper_state_event_enable;
-
-	err = mlxsw_env_module_temp_event_enable(mlxsw_core, 0);
+	/* Enable events only for main board. Line card events are to be
+	 * configured only after line card is activated. Before that, access to
+	 * modules on line cards is not allowed.
+	 */
+	err = mlxsw_env_module_event_enable(env, 0);
 	if (err)
-		goto err_temp_event_enable;
+		goto err_mlxsw_env_module_event_enable;
 
 	err = mlxsw_env_module_type_set(mlxsw_core, 0);
 	if (err)
@@ -1235,8 +1257,8 @@ int mlxsw_env_init(struct mlxsw_core *mlxsw_core, struct mlxsw_env **p_env)
 	return 0;
 
 err_type_set:
-err_temp_event_enable:
-err_oper_state_event_enable:
+	mlxsw_env_module_event_disable(env, 0);
+err_mlxsw_env_module_event_enable:
 	mlxsw_env_module_plug_event_unregister(env);
 err_module_plug_event_register:
 	mlxsw_env_temp_warn_event_unregister(env);
@@ -1250,6 +1272,7 @@ int mlxsw_env_init(struct mlxsw_core *mlxsw_core, struct mlxsw_env **p_env)
 
 void mlxsw_env_fini(struct mlxsw_env *env)
 {
+	mlxsw_env_module_event_disable(env, 0);
 	mlxsw_env_module_plug_event_unregister(env);
 	/* Make sure there is no more event work scheduled. */
 	mlxsw_core_flush_owq();