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Message-ID: <Y4ONgD4dAj8yU2/+@shredder>
Date:   Sun, 27 Nov 2022 18:17:04 +0200
From:   Ido Schimmel <idosch@...dia.com>
To:     Vincent Mailhol <mailhol.vincent@...adoo.fr>
Cc:     Jiri Pirko <jiri@...dia.com>, netdev@...r.kernel.org,
        Jakub Kicinski <kuba@...nel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
        Boris Brezillon <bbrezillon@...nel.org>,
        Arnaud Ebalard <arno@...isbad.org>,
        Srujana Challa <schalla@...vell.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Michael Chan <michael.chan@...adcom.com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Dimitris Michailidis <dmichail@...gible.com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Sunil Goutham <sgoutham@...vell.com>,
        Linu Cherian <lcherian@...vell.com>,
        Geetha sowjanya <gakula@...vell.com>,
        Jerin Jacob <jerinj@...vell.com>,
        hariprasad <hkelam@...vell.com>,
        Subbaraya Sundeep <sbhatta@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        Petr Machata <petrm@...dia.com>,
        Simon Horman <simon.horman@...igine.com>,
        Shannon Nelson <snelson@...sando.io>, drivers@...sando.io,
        Ariel Elior <aelior@...vell.com>,
        Manish Chopra <manishc@...vell.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Vadim Fedorenko <vadfed@...com>,
        Richard Cochran <richardcochran@...il.com>,
        Vadim Pasternak <vadimp@...lanox.com>,
        Shalom Toledo <shalomt@...lanox.com>,
        linux-crypto@...r.kernel.org, intel-wired-lan@...ts.osuosl.org,
        linux-rdma@...r.kernel.org, oss-drivers@...igine.com,
        Jiri Pirko <jiri@...lanox.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Hao Chen <chenhao288@...ilicon.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Minghao Chi <chi.minghao@....com.cn>,
        Shijith Thotton <sthotton@...vell.com>,
        Ido Schimmel <idosch@...lanox.com>
Subject: Re: [PATCH net-next v3 2/5] mlxsw: core: fix
 mlxsw_devlink_info_get() to correctly report driver name

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@...lanox.com>
> CC: Ido Schimmel <idosch@...lanox.com>
> CC: Vadim Pasternak <vadimp@...lanox.com>
> Signed-off-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
> ---
>  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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