PS_DISABLED
if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
if (old_ps == PS_DISABLED && val != PS_DISABLED) {
} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
case PS_DISABLED:
if (data->ps != PS_DISABLED)
if (data->ps != PS_DISABLED)