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-rw-r--r--drivers/xen/events.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 2924faa7f6c4..46625cd38743 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -233,6 +233,7 @@ static void unmask_evtchn(int port)
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 @@ static int find_unbound_irq(void)
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;
}