linux-kernel - Re: [RFC PATCH v2 net-next 03/15] phy: ethernet: add configuration interface for copper backplane Ethernet PHYs

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Message-ID: <20230928190536.GO24230@kernel.org>
Date:   Thu, 28 Sep 2023 21:05:36 +0200
From:   Simon Horman <horms@...nel.org>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Madalin Bucur <madalin.bucur@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Camelia Groza <camelia.groza@....com>,
        Li Yang <leoyang.li@....com>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor@...nel.org>,
        Sean Anderson <sean.anderson@...o.com>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>
Subject: Re: [RFC PATCH v2 net-next 03/15] phy: ethernet: add configuration
 interface for copper backplane Ethernet PHYs

On Sat, Sep 23, 2023 at 04:48:52PM +0300, Vladimir Oltean wrote:

...

> +/**
> + * coef_update_opposite - return the opposite of one C72 coefficient update
> + *			  request
> + *
> + * @update:	original coefficient update
> + *
> + * Helper to transform the update request of one equalization tap into a
> + * request of the same tap in the opposite direction. May be used by C72
> + * phy remote TX link training algorithms.
> + */
> +static inline enum coef_update coef_update_opposite(enum coef_update update)

Hi Vladimir,

another nit from me.

Please put the inline keyword first.
Likewise elsewhere in this patch.

Tooling, including gcc-13 with W=1, complains about this.

> +{
> +	switch (update) {
> +	case COEF_UPD_INC:
> +		return COEF_UPD_DEC;
> +	case COEF_UPD_DEC:
> +		return COEF_UPD_INC;
> +	default:
> +		return COEF_UPD_HOLD;
> +	}
> +}

...