[PATCH] xen: make sure irq_desc is allocated for interrupts

[Jeremy Fitzhardinge]

Impact: bugfix

Make sure all Xen irqs have an irq_desc.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
---
drivers/xen/events.c |    5 +++++
1 file changed, 5 insertions(+)

===================================================================
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -233,6 +233,7 @@
static int find_unbound_irq(void)
{
	int irq;
+	struct irq_desc *desc;

	/* Only allocate from dynirq range */
	for (irq = 0; irq < nr_irqs; irq++)
@@ -242,6 +243,10 @@
	if (irq == nr_irqs)
		panic("No available IRQ to bind to: increase nr_irqs!\n");

+	desc = irq_to_desc_alloc_cpu(irq, 0);
+	if (WARN_ON(desc == NULL))
+		return -1;
+
	return irq;
}



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/