linux-kernel - Re: [PATCH net-next] net: sparx5/lan969x: populate netdev of

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Message-ID: <20251110065701.rch4wjflap3vicjq@DEN-DL-M70577>
Date: Mon, 10 Nov 2025 06:57:01 +0000
From: Daniel Machon <daniel.machon@...rochip.com>
To: Robert Marko <robert.marko@...tura.hr>
CC: <andrew+netdev@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <Steen.Hegelund@...rochip.com>,
	<UNGLinuxDriver@...rochip.com>, <netdev@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<luka.perkov@...tura.hr>
Subject: Re: [PATCH net-next] net: sparx5/lan969x: populate netdev of_node

Hi Robert,

> Populate of_node for the port netdevs, to make the individual ports
> of_nodes available in sysfs.

Sounds reasonable :-)

> 
> Signed-off-by: Robert Marko <robert.marko@...tura.hr>
> ---
>  drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c
> index 1d34af78166a..284596f1da04 100644
> --- a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c
> +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c
> @@ -300,7 +300,11 @@ int sparx5_register_netdevs(struct sparx5 *sparx5)
> 
>         for (portno = 0; portno < sparx5->data->consts->n_ports; portno++)
>                 if (sparx5->ports[portno]) {
> -                       err = register_netdev(sparx5->ports[portno]->ndev);
> +                       struct net_device *port_ndev = sparx5->ports[portno]->ndev;

This line exceeds 80 chars and can easily be wrapped.

> +
> +                       port_ndev->dev.of_node = sparx5->ports[portno]->of_node;
> +
> +                       err = register_netdev(port_ndev);
>                         if (err) {
>                                 dev_err(sparx5->dev,
>                                         "port: %02u: netdev registration failed\n",
> --
> 2.51.1
> 

It seems wrong to me to stuff this into sparx5_register_netdevs() - there are
two better candidates, either: sparx5_create_netdev (where other ndev variables
are assigned) or sparx5_create_port().

/Daniel