1 files changed, 16 insertions, 0 deletions

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index c20db0be9173..3aba8d12f328 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -39,6 +39,18 @@ void handle_bad_irq(unsigned int irq, struct irq_desc *desc)
         ack_bad_irq(irq);
 }
 
+#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS)
+static void __init init_irq_default_affinity(void)
+{
+        alloc_bootmem_cpumask_var(&irq_default_affinity);
+        cpumask_setall(irq_default_affinity);
+}
+#else
+static void __init init_irq_default_affinity(void)
+{
+}
+#endif
+
 /*
  * Linux has a controller-independent interrupt architecture.
  * Every controller has a 'controller-template', that is used
@@ -134,6 +146,8 @@ int __init early_irq_init(void)
         int legacy_count;
         int i;
 
+        init_irq_default_affinity();
+
         desc = irq_desc_legacy;
         legacy_count = ARRAY_SIZE(irq_desc_legacy);
 
@@ -219,6 +233,8 @@ int __init early_irq_init(void)
         int count;
         int i;
 
+        init_irq_default_affinity();
+
         desc = irq_desc;
         count = ARRAY_SIZE(irq_desc);