irqreturn_t pdacf_interrupt(int irq, void *dev)
{
	struct snd_pdacf *chip = dev;
	unsigned short stat;

	if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|
				  PDAUDIOCF_STAT_IS_CONFIGURED|
				  PDAUDIOCF_STAT_IS_SUSPENDED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
		return IRQ_HANDLED;	/* IRQ_NONE here? */

	stat = inw(chip->port + PDAUDIOCF_REG_ISR);
	if (stat & (PDAUDIOCF_IRQLVL|PDAUDIOCF_IRQOVR)) {
		if (stat & PDAUDIOCF_IRQOVR)	/* should never happen */
			snd_printk(KERN_ERR "PDAUDIOCF SRAM buffer overrun detected!\n");
		if (chip->pcm_substream)
			tasklet_schedule(&chip->tq);
		if (!(stat & PDAUDIOCF_IRQAKM))
			stat |= PDAUDIOCF_IRQAKM;	/* check rate */
	}
	if (get_irq_regs() != NULL)
		snd_ak4117_check_rate_and_errors(chip->ak4117, 0);
	return IRQ_HANDLED;
}