Commit 20adee8f authored by Arnd Bergmann's avatar Arnd Bergmann

irqchip: exynos: look up irq using irq_find_mapping

Since we want to move to using the linear IRQ domain in the
future, we cannot rely on the irq numbers to be contiguous
and need to look up the irq from the hwirq using the domain.

This also turns the bogus comparison with NR_IRQ into a
more meaningful check to see if the number has a valid mapping.
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 863a08dc
......@@ -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;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment