Re: [PATCH net-next 1/5] enetc: Fix if_mode extraction

[Andrew Lunn]

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.man...@nxp.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