-/*
- * Attempt to re-trigger the interrupt. The SA1111 contains a register
- * (INTSET) which claims to do this. However, in practice no amount of
- * manipulation of INTEN and INTSET guarantees that the interrupt will
- * be triggered. In fact, its very difficult, if not impossible to get
- * INTSET to re-trigger the interrupt.
- */
-static int sa1111_retrigger_lowirq(struct irq_data *d)
-{
- struct sa1111 *sachip = irq_data_get_irq_chip_data(d);
- void __iomem *mapbase = sachip->base + SA1111_INTC;
- unsigned int mask = SA1111_IRQMASK_LO(d->irq);
- unsigned long ip0;
- int i;
-
- ip0 = sa1111_readl(mapbase + SA1111_INTPOL0);
- for (i = 0; i < 8; i++) {
- sa1111_writel(ip0 ^ mask, mapbase + SA1111_INTPOL0);
- sa1111_writel(ip0, mapbase + SA1111_INTPOL0);
- if (sa1111_readl(mapbase + SA1111_INTSTATCLR0) & mask)
- break;
- }
-
- if (i == 8)
- pr_err("Danger Will Robinson: failed to re-trigger IRQ%d\n",
- d->irq);
- return i == 8 ? -1 : 0;