netdev - Re: [PATCH net-next v2 1/3] net: phy: broadcom: Add PTP support for some Broadcom PHYs.

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Date:   Sat, 30 Apr 2022 16:55:22 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Jonathan Lemon <jonathan.lemon@...il.com>
Cc:     f.fainelli@...il.com, bcm-kernel-feedback-list@...adcom.com,
        hkallweit1@...il.com, richardcochran@...il.com, lasse@...ebeat.app,
        netdev@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH net-next v2 1/3] net: phy: broadcom: Add PTP support for
 some Broadcom PHYs.

> +struct bcm_ptp_private *bcm_ptp_probe(struct phy_device *phydev)
> +{
> +	struct bcm_ptp_private *priv;
> +	struct ptp_clock *clock;
> +
> +	switch (BRCM_PHY_MODEL(phydev)) {
> +	case PHY_ID_BCM54210E:
> +		break;
> +	default:
> +		return NULL;
> +	}
> +
> +	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
> +	if (!priv)
> +		return ERR_PTR(-ENOMEM);
> +
> +	priv->ptp_info = bcm_ptp_clock_info;
> +
> +	clock = ptp_clock_register(&priv->ptp_info, &phydev->mdio.dev);
> +	if (IS_ERR(clock))
> +		return (void *)clock;

nit-pick:

You could use ERR_CAST() here.

    Andrew