/* Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.  */
static void expio_ack_irq(u32 irq)
/* Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.  */
static void expio_ack_irq(u32 irq)
{
	u32 expio = MXC_IRQ_TO_EXPIO(irq);
	__raw_writew(1 << expio, PBC_INTSTATUS_REG);
}