Re: [PATCH v4 4/7] net: phy: Add 10BASE-T1L support in phy-c45

[Andrew Lunn]

> +		ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_EXTABLE);
> +		if (ret < 0)
> +			return ret;
> +
> +		if (ret & MDIO_PMA_EXTABLE_BT1)


This pattern of reading the MDIO_PMA_EXTABLE register and then looking
for bit MDIO_PMA_EXTABLE_BT1 happens a lot. It is not something which
is expected to change is it? So i wounder if it should be read once
and stored away?

    Andrew