netdev - Re: [PATCH net-next 1/2] net: phy: fixed_phy: add helper fixed_phy_register

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Message-ID: <773461fd-3134-4314-849b-53ab1d9db09a@engleder-embedded.com>
Date: Fri, 17 Oct 2025 22:42:42 +0200
From: Gerhard Engleder <gerhard@...leder-embedded.com>
To: Heiner Kallweit <hkallweit1@...il.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 David Miller <davem@...emloft.net>, Andrew Lunn <andrew+netdev@...n.ch>,
 Vladimir Oltean <olteanv@...il.com>,
 Russell King - ARM Linux <linux@...linux.org.uk>,
 Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH net-next 1/2] net: phy: fixed_phy: add helper
 fixed_phy_register_100fd

On 17.10.25 22:12, Heiner Kallweit wrote:
> In few places a 100FD fixed PHY is used. Create a helper so that users
> don't have to define the struct fixed_phy_status.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
> ---
>   drivers/net/phy/fixed_phy.c | 12 ++++++++++++
>   include/linux/phy_fixed.h   |  6 ++++++
>   2 files changed, 18 insertions(+)
> 
> diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c
> index 0e1b28f06..bdc3a4bff 100644
> --- a/drivers/net/phy/fixed_phy.c
> +++ b/drivers/net/phy/fixed_phy.c
> @@ -227,6 +227,18 @@ struct phy_device *fixed_phy_register(const struct fixed_phy_status *status,
>   }
>   EXPORT_SYMBOL_GPL(fixed_phy_register);
>   
> +struct phy_device *fixed_phy_register_100fd(void)
> +{
> +	static const struct fixed_phy_status status = {
> +		.link	= 1,
> +		.speed	= SPEED_100,
> +		.duplex	= DUPLEX_FULL,
> +	};
> +
> +	return fixed_phy_register(&status, NULL);
> +}
> +EXPORT_SYMBOL_GPL(fixed_phy_register_100fd);
> +
>   void fixed_phy_unregister(struct phy_device *phy)
>   {
>   	phy_device_remove(phy);
> diff --git a/include/linux/phy_fixed.h b/include/linux/phy_fixed.h
> index d17ff750c..08275ef64 100644
> --- a/include/linux/phy_fixed.h
> +++ b/include/linux/phy_fixed.h
> @@ -20,6 +20,7 @@ extern int fixed_phy_change_carrier(struct net_device *dev, bool new_carrier);
>   void fixed_phy_add(const struct fixed_phy_status *status);
>   struct phy_device *fixed_phy_register(const struct fixed_phy_status *status,
>   				      struct device_node *np);
> +struct phy_device *fixed_phy_register_100fd(void);
>   
>   extern void fixed_phy_unregister(struct phy_device *phydev);
>   extern int fixed_phy_set_link_update(struct phy_device *phydev,
> @@ -34,6 +35,11 @@ fixed_phy_register(const struct fixed_phy_status *status,
>   	return ERR_PTR(-ENODEV);
>   }
>   
> +static inline struct phy_device *fixed_phy_register_100fd(void)
> +{
> +	return ERR_PTR(-ENODEV);
> +}
> +
>   static inline void fixed_phy_unregister(struct phy_device *phydev)
>   {
>   }

Reviewed-by: Gerhard Engleder <gerhard@...leder-embedded.com>