Re: [PATCH net-next v13 08/11] net: mdio: realtek-rtl9300: Check for C45 support during setup

[sashiko-bot@kernel.org]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] The format string in `dev_err_probe` uses `%d` to print a `u32` variable (`bus`).
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--- Patch [8]: [PATCH net-next v13 08/11] net: mdio: realtek-rtl9300: Check for C45 support during setup ---
commit e8d34ab1b625442557bbfb76ca4546a7c625a18a
Author: Markus Stockhausen <markus.stockhausen@gmx.de>

net: mdio: realtek-rtl9300: Check for C45 support during setup

This commit adds a consistency check in the mapping helper to abort setup if
the devicetree defines a C45 PHY for a device without C45 read/write
capabilities.

> diff --git a/drivers/net/mdio/mdio-realtek-rtl9300.c b/drivers/net/mdio/mdio-realtek-rtl9300.c
> index 88ba73b2ee812..22b1c4e05354c 100644
> --- a/drivers/net/mdio/mdio-realtek-rtl9300.c
> +++ b/drivers/net/mdio/mdio-realtek-rtl9300.c
> @@ -782,8 +782,14 @@ static int otto_emdio_map_ports(struct device *dev)
[ ... ]
> -		if (of_device_is_compatible(phy_dn, "ethernet-phy-ieee802.3-c45"))
> +		if (of_device_is_compatible(phy_dn, "ethernet-phy-ieee802.3-c45")) {
> +			if (!priv->info->read_c45 || !priv->info->write_c45) {
> +				err = dev_err_probe(dev, -EOPNOTSUPP,
> +						    "bus %d does not support C45 access\n", bus);

[Severity: Low]
This isn't a bug, but should this format string use %u instead of %d?

Since bus is a u32 variable, printing it with a signed format specifier is a
type mismatch. The value will likely remain small enough to print correctly
without overflowing, but using %u would be more precise.

> +				goto put_nodes;
> +			}
>  			priv->smi_bus_is_c45[bus] = true;
> +		}
[ ... ]

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Sashiko AI review · https://sashiko.dev/#/patchset/20260807171058.522833-1-markus.stockhausen@gmx.de?part=8