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-rw-r--r--drivers/xen/events.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index dc8177950d05..4591853f6ebc 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -392,8 +392,10 @@ static void xen_irq_init(unsigned irq)
struct irq_info *info;
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
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (info == NULL)
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