netdev - Re: [PATCH net-next 1/5] enetc: Fix if

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Date:   Fri, 6 Sep 2019 21:57:43 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Claudiu Manoil <claudiu.manoil@....com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        alexandru.marginean@....com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/5] enetc: Fix if_mode extraction

On Fri, Sep 06, 2019 at 05:15:40PM +0300, Claudiu Manoil wrote:
> Fix handling of error return code. Before this fix,
> the error code was handled as unsigned type.
> Also, on this path if if_mode not found then just handle
> it as fixed link (i.e mac2mac connection).
> 
> Signed-off-by: Claudiu Manoil <claudiu.manoil@....com>
> ---
>  drivers/net/ethernet/freescale/enetc/enetc_pf.c | 17 ++++++-----------
>  1 file changed, 6 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> index 7d6513ff8507..3a556646a2fb 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> @@ -751,6 +751,7 @@ static int enetc_of_get_phy(struct enetc_ndev_priv *priv)
>  	struct enetc_pf *pf = enetc_si_priv(priv->si);
>  	struct device_node *np = priv->dev->of_node;
>  	struct device_node *mdio_np;
> +	int phy_mode;
>  	int err;
>  
>  	if (!np) {
> @@ -784,17 +785,11 @@ static int enetc_of_get_phy(struct enetc_ndev_priv *priv)
>  		}
>  	}
>  
> -	priv->if_mode = of_get_phy_mode(np);
> -	if (priv->if_mode < 0) {
> -		dev_err(priv->dev, "missing phy type\n");
> -		of_node_put(priv->phy_node);
> -		if (of_phy_is_fixed_link(np))
> -			of_phy_deregister_fixed_link(np);
> -		else
> -			enetc_mdio_remove(pf);
> -
> -		return -EINVAL;
> -	}

Hi Claudiu

It is not clear to me why it is no longer necessary to deregister the
fixed link, or remove the mdio bus?

> +	phy_mode = of_get_phy_mode(np);
> +	if (phy_mode < 0)
> +		priv->if_mode = PHY_INTERFACE_MODE_NA; /* fixed link */
> +	else
> +		priv->if_mode = phy_mode;

Thanks
	Andrew