Re: [PATCH net-next v8 09/11] net: phy: ncn26000: Support for loopback

[Andrew Lunn <andrew@lunn.ch>]

> @@ -2775,6 +2775,26 @@ int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum,
>  }
>  EXPORT_SYMBOL(genphy_write_mmd_unsupported);
>  
> +/**
> + * genphy_loopback_fixed_speed - Helper to modify the PHY loopback mode
> + * without affecting any other settings.
> + * @phydev: The phy_device struct
> + * @enable: Flag to enable or disable the PHY level loopback.
> + * @speed: Speed setting. Not expected to be set. Error if it is set.
> + *
> + * Returns: 0 if successful, negative error code on failure.
> + */
> +int genphy_loopback_fixed_speed(struct phy_device *phydev, bool enable,
> +				int speed)
> +{
> +	if (enable && speed)
> +		return -EOPNOTSUPP;
> +
> +	return phy_modify(phydev, MII_BMCR, BMCR_LOOPBACK,
> +			  enable ? BMCR_LOOPBACK : 0);
> +}
> +EXPORT_SYMBOL(genphy_loopback_fixed_speed);

Please could you place it next to genphy_loopback()

> +
>  int genphy_suspend(struct phy_device *phydev)
>  {
>  	return phy_set_bits(phydev, MII_BMCR, BMCR_PDOWN);
> diff --git a/include/linux/phy.h b/include/linux/phy.h
> index 7c5098a0dd6c..c1b9bc305c82 100644
> --- a/include/linux/phy.h
> +++ b/include/linux/phy.h
> @@ -2327,6 +2327,8 @@ int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad,
>  				u16 regnum);
>  int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum,
>  				 u16 regnum, u16 val);
> +int genphy_loopback_fixed_speed(struct phy_device *phydev, bool enable,
> +				int speed);

and this next to genphy_loopback().

	Andrew