[PATCH net-next] mlxsw: core: remove unnecessary function mlxsw_core_driver_put

[PATCH net-next] mlxsw: core: remove unnecessary function mlxsw_core_driver_put

[YueHaibing]

The function mlxsw_core_driver_put only traverse mlxsw_core_driver_list
to find the matched mlxsw_driver,but never used it.
So it can be removed safely.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index b5d5e57..81533d7 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -726,15 +726,6 @@ static struct mlxsw_driver *mlxsw_core_driver_get(const char *kind)
 	return mlxsw_driver;
 }
 
-static void mlxsw_core_driver_put(const char *kind)
-{
-	struct mlxsw_driver *mlxsw_driver;
-
-	spin_lock(&mlxsw_core_driver_list_lock);
-	mlxsw_driver = __driver_find(kind);
-	spin_unlock(&mlxsw_core_driver_list_lock);
-}
-
 static int mlxsw_devlink_port_split(struct devlink *devlink,
 				    unsigned int port_index,
 				    unsigned int count,
@@ -1082,7 +1073,6 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	if (!reload)
 		devlink_free(devlink);
 err_devlink_alloc:
-	mlxsw_core_driver_put(device_kind);
 	return err;
 }
 EXPORT_SYMBOL(mlxsw_core_bus_device_register);
@@ -1090,7 +1080,6 @@ EXPORT_SYMBOL(mlxsw_core_bus_device_register);
 void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 				      bool reload)
 {
-	const char *device_kind = mlxsw_core->bus_info->device_kind;
 	struct devlink *devlink = priv_to_devlink(mlxsw_core);
 
 	if (mlxsw_core->reload_fail)
@@ -1111,7 +1100,6 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 		return;
 reload_fail:
 	devlink_free(devlink);
-	mlxsw_core_driver_put(device_kind);
 }
 EXPORT_SYMBOL(mlxsw_core_bus_device_unregister);
 
-- 
2.7.0

Re: [PATCH net-next] mlxsw: core: remove unnecessary function mlxsw_core_driver_put

[Ido Schimmel]

On Fri, Aug 10, 2018 at 10:37:30AM +0800, YueHaibing wrote:
> The function mlxsw_core_driver_put only traverse mlxsw_core_driver_list
> to find the matched mlxsw_driver,but never used it.
> So it can be removed safely.
> 
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>

Reviewed-by: Ido Schimmel <idosch@mellanox.com>

FWIW, this function used to call module_put(), but it was removed in
commit 1d20d23c59c9 ("mlxsw: Move PCI id table definitions into driver
modules").

Thanks!

Re: [PATCH net-next] mlxsw: core: remove unnecessary function mlxsw_core_driver_put

[David Miller]

From: YueHaibing <yuehaibing@huawei.com>
Date: Fri, 10 Aug 2018 10:37:30 +0800

> The function mlxsw_core_driver_put only traverse mlxsw_core_driver_list
> to find the matched mlxsw_driver,but never used it.
> So it can be removed safely.
> 
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>

Applied.