xen: Fix compile warning when CONFIG_SMP is not defined.

.. which is quite benign.

drivers/xen/events.c:398: warning: unused variable ‘desc’

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 553da68..30df85d 100644 (file)
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -395,9 +395,9 @@ static void unmask_evtchn(int port)
 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