static ssize_t show_tty_active(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	return sprintf(buf, "tty%d\n", fg_console + 1);
}
static ssize_t show_tty_active(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	return sprintf(buf, "tty%d\n", fg_console + 1);
}