1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index f038e586a4b9..196a06fbc122 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -244,7 +244,8 @@ int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m)
         desc->affinity_hint = m;
         irq_put_desc_unlock(desc, flags);
         /* set the initial affinity to prevent every interrupt being on CPU0 */
-        __irq_set_affinity(irq, m, false);
+        if (m)
+                __irq_set_affinity(irq, m, false);
         return 0;
 }
 EXPORT_SYMBOL_GPL(irq_set_affinity_hint);