Re: [PATCH net-next v4 6/9] net: phy: marvell10g: use phy_read_mmd_poll_timeout() to simplify the code

From: Andrew Lunn
Date: Sun Mar 22 2020 - 11:37:10 EST


> --- a/drivers/net/phy/marvell10g.c
> +++ b/drivers/net/phy/marvell10g.c
> @@ -241,22 +241,17 @@ static int mv3310_power_up(struct phy_device *phydev)
>
> static int mv3310_reset(struct phy_device *phydev, u32 unit)
> {
> - int retries, val, err;
> + int val, err;
>
> err = phy_modify_mmd(phydev, MDIO_MMD_PCS, unit + MDIO_CTRL1,
> MDIO_CTRL1_RESET, MDIO_CTRL1_RESET);
> if (err < 0)
> return err;
>
> - retries = 20;
> - do {
> - msleep(5);
> - val = phy_read_mmd(phydev, MDIO_MMD_PCS, unit + MDIO_CTRL1);
> - if (val < 0)
> - return val;
> - } while (val & MDIO_CTRL1_RESET && --retries);

This is another example of the sleep happening first. To keep the code
more similar, you probably should add an msleep(5) before calling
phy_read_mmd_poll_timeout().

Andrew