Re: [PATCH net-next v3 2/5] mlxsw: core: fix mlxsw_devlink_info_get() to correctly report driver name

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On Sun, Nov 27, 2022 at 10:09:16PM +0900, Vincent Mailhol wrote:
> Currently, mlxsw_devlink_info_get() reports the device_kind. The
> device_kind is not necessarily the same as the device_name. For
> example, the mlxsw_i2c implementation sets up the device_kind as
> ic2_client::name in [1] which indicates the type of the device

s/ic2/i2c/

> (e.g. chip name).
> 
> Fix it so that it correctly reports the driver name.
> 
> [1] mlxsw_i2c_probe() from drivers/net/ethernet/mellanox/mlxsw/i2c.c
> Link: https://elixir.bootlin.com/linux/v6.1-rc1/source/drivers/net/ethernet/mellanox/mlxsw/i2c.c#L714

Same comment as before.

Before the series:

# devlink dev info i2c/2-0048 | grep driver
  driver mlxsw_minimal

After the series:

# devlink dev info i2c/2-0048 | grep driver
  driver mlxsw_minimal

> 
> Fixes: a9c8336f6544 ("mlxsw: core: Add support for devlink info command")
> CC: Shalom Toledo <shalomt@xxxxxxxxxxxx>
> CC: Ido Schimmel <idosch@xxxxxxxxxxxx>
> CC: Vadim Pasternak <vadimp@xxxxxxxxxxxx>
> Signed-off-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
> ---
>  drivers/net/ethernet/mellanox/mlxsw/core.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
> index a83f6bc30072..d8b1bb03cdb0 100644
> --- a/drivers/net/ethernet/mellanox/mlxsw/core.c
> +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
> @@ -1453,6 +1453,7 @@ mlxsw_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
>  		       struct netlink_ext_ack *extack)
>  {
>  	struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
> +	struct device *dev = mlxsw_core->bus_info->dev;
>  	char fw_info_psid[MLXSW_REG_MGIR_FW_INFO_PSID_SIZE];
>  	u32 hw_rev, fw_major, fw_minor, fw_sub_minor;
>  	char mgir_pl[MLXSW_REG_MGIR_LEN];
> @@ -1460,7 +1461,7 @@ mlxsw_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
>  	int err;
>  
>  	err = devlink_info_driver_name_put(req,
> -					   mlxsw_core->bus_info->device_kind);
> +					   dev_driver_string(dev->parent));
>  	if (err)
>  		return err;
>  
> -- 
> 2.37.4
> 



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