PHY_UP
if (phydev->state != PHY_UP)
phydev->state = PHY_UP;
phydev->state = PHY_UP;
case PHY_UP:
phydev->state = PHY_UP;
phydev->state = PHY_UP;
phydev->state = PHY_UP;
if (phydev->state < PHY_UP ||
if (phydev->state < PHY_UP ||
phydev->state != PHY_UP);
return phydev->state >= PHY_UP;