CFG_SPEED_SCAN
if (priv->config & CFG_SPEED_SCAN) {
priv->config &= ~CFG_SPEED_SCAN;
priv->config |= CFG_SPEED_SCAN;
if (priv->config & CFG_SPEED_SCAN) {
if (priv->config & CFG_SPEED_SCAN)
if (!(priv->config & CFG_SPEED_SCAN))