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Date:   Tue, 27 Sep 2022 18:00:56 -0700
From:   Jakub Kicinski <kuba@kernel.org>
To:     Oleksij Rempel <o.rempel@pengutronix.de>
Cc:     Andrew Lunn <andrew@lunn.ch>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Paolo Abeni <pabeni@redhat.com>,
        Russell King <linux@armlinux.org.uk>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Jonathan Corbet <corbet@lwn.net>, kernel@pengutronix.de,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        devicetree@vger.kernel.org, linux-doc@vger.kernel.org,
        David Jander <david@protonic.nl>,
        Luka Perkov <luka.perkov@sartura.hr>,
        Robert Marko <robert.marko@sartura.hr>
Subject: Re: [PATCH net-next v7 2/7] net: add framework to support Ethernet
 PSE and PDs devices
Message-ID: <20220927180056.5e8e410c@kernel.org>
In-Reply-To: <20220926112500.990705-3-o.rempel@pengutronix.de>
References: <20220926112500.990705-1-o.rempel@pengutronix.de>
        <20220926112500.990705-3-o.rempel@pengutronix.de>
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On Mon, 26 Sep 2022 13:24:55 +0200 Oleksij Rempel wrote:
> +static inline int pse_controller_register(struct pse_controller_dev *pcdev)
> +{
> +	return -ENOTSUPP;
> +}
> +
> +static inline void pse_controller_unregister(struct pse_controller_dev *pcdev)
> +{
> +}
> +
> +static inline int devm_pse_controller_register(struct device *dev,
> +						 struct pse_controller_dev *pcdev)
> +{
> +	return -ENOTSUPP;
> +}

Presumably only PSE controller drivers would try to register themselves.
Such drivers should depend on the right config, and therefore we don't
need static inline stubs for the register/unregister API.

> +static inline struct pse_control *pse_control_get(struct device *dev)
> +{
> +	return ERR_PTR(-ENOTSUPP);
> +}
> +
> +static inline struct pse_control *devm_pse_control_get( struct device *dev)

nit: extra space after (

> +{
> +	return ERR_PTR(-ENOTSUPP);
> +}

These two I don't see any calls to outside drivers/net/pse-pd/pse_core.c
so they should go from the API until we get an in-tree caller.

> +static inline struct pse_control *of_pse_control_get(struct device_node *node)
> +{
> +	return ERR_PTR(-ENOTSUPP);
> +}

This one should prolly return -ENOENT as noted on patch 4.

If you could sed -i 's/ENOTSUPP/EOPNOTSUPP/' on the patches that'd be
great, I don't think those errno can leak to user space but why risk
it...