ICHSS_CTRL_BIT
req_val = ICHSS_CTRL_BIT;
old_val = ICH_GET_REG(sc->ctrl_reg) & ~ICHSS_CTRL_BIT;
if (req_val != (new_val & ICHSS_CTRL_BIT)) {
state = ICH_GET_REG(sc->ctrl_reg) & ICHSS_CTRL_BIT;