static void xen_irq_init(unsigned irq)
{
struct irq_info *info;
+#ifdef CONFIG_SMP
struct irq_desc *desc = irq_to_desc(irq);
-#ifdef CONFIG_SMP
/* By default all event channels notify CPU#0. */
cpumask_copy(desc->irq_data.affinity, cpumask_of(0));
#endif