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Message-ID: <Y4OM+q5yqCE4/aGs@shredder>
Date: Sun, 27 Nov 2022 18:14:50 +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>,
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Ido Schimmel <idosch@...lanox.com>
Subject: Re: [PATCH net-next v3 1/5] mlxsw: minimal: fix
mlxsw_m_module_get_drvinfo() to correctly report driver name
On Sun, Nov 27, 2022 at 10:09:15PM +0900, Vincent Mailhol wrote:
> Currently, mlxsw_m_module_get_drvinfo() 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
> (e.g. chip name), not the actual driver 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
Before the series:
# ethtool -i eth2 | grep driver
driver: mlxsw_minimal
After the series:
# ethtool -i eth2 | grep driver
driver: mlxsw_minimal
See:
https://elixir.bootlin.com/linux/v6.1-rc1/source/drivers/net/ethernet/mellanox/mlxsw/minimal.c#L721
The current code is consistent with the PCI driver:
https://elixir.bootlin.com/linux/v6.1-rc1/source/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c#L17
Which also correctly reports the driver name.
So I prefer to keep the code as-is.
Thanks
>
> Fixes: 9bbd7efbc055 ("mlxsw: i2c: Extend initialization with querying firmware info")
> 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/minimal.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
> index 6b56eadd736e..9b37ddbe0cba 100644
> --- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
> +++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
> @@ -92,7 +92,7 @@ static void mlxsw_m_module_get_drvinfo(struct net_device *dev,
> struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
> struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
>
> - strscpy(drvinfo->driver, mlxsw_m->bus_info->device_kind,
> + strscpy(drvinfo->driver, dev_driver_string(dev->dev.parent),
> sizeof(drvinfo->driver));
> snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
> "%d.%d.%d",
> --
> 2.37.4
>
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