+/* When an irq gets requested for the first client, if it's an
+ * edge interrupt, we clear any previous one on the controller
+ */
+static unsigned int __pmac pmac_startup_irq(unsigned int irq_nr)
+{
+ unsigned long bit = 1UL << (irq_nr & 0x1f);
+ int i = irq_nr >> 5;
+
+ if ((irq_desc[irq_nr].status & IRQ_LEVEL) == 0)
+ out_le32(&pmac_irq_hw[i]->ack, bit);
+ set_bit(irq_nr, ppc_cached_irq_mask);
+ pmac_set_irq_mask(irq_nr, 0);
+
+ return 0;
+}
+