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-rw-r--r--drivers/irqchip/exynos-combiner.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index 6855c92c2262..494c2e21b538 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -33,7 +33,7 @@
static DEFINE_SPINLOCK(irq_controller_lock);
struct combiner_chip_data {
- unsigned int irq_offset;
+ unsigned int hwirq_offset;
unsigned int irq_mask;
void __iomem *base;
unsigned int parent_irq;
@@ -80,11 +80,11 @@ static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
if (status == 0)
goto out;
- combiner_irq = __ffs(status);
+ combiner_irq = chip_data->hwirq_offset + __ffs(status);
+ cascade_irq = irq_find_mapping(combiner_irq_domain, combiner_irq);
- cascade_irq = combiner_irq + (chip_data->irq_offset & ~31);
- if (unlikely(cascade_irq >= NR_IRQS))
- do_bad_IRQ(cascade_irq, desc);
+ if (unlikely(!cascade_irq))
+ do_bad_IRQ(irq, desc);
else
generic_handle_irq(cascade_irq);
@@ -129,8 +129,7 @@ static void __init combiner_init_one(struct combiner_chip_data *combiner_data,
void __iomem *base, unsigned int irq)
{
combiner_data->base = base;
- combiner_data->irq_offset = irq_find_mapping(
- combiner_irq_domain, combiner_nr * IRQ_IN_COMBINER);
+ combiner_data->hwirq_offset = (combiner_nr & ~3) * IRQ_IN_COMBINER;
combiner_data->irq_mask = 0xff << ((combiner_nr % 4) << 3);
combiner_data->parent_irq = irq;