/* NOTE: This check is based upon observation, not documentation.  */
static int verify_mpu401(const struct snd_mpu401 *mpu)
/* NOTE: This check is based upon observation, not documentation.  */
static int verify_mpu401(const struct snd_mpu401 *mpu)
{
	return ((inb(MPU401C(mpu)) & 0xc0) == 0x80);
}