1 files changed, 12 insertions, 0 deletions

diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c
index 22608ebf831..bf629cadec1 100644
--- a/arch/x86/kernel/irqinit_32.c
+++ b/arch/x86/kernel/irqinit_32.c
@@ -78,6 +78,15 @@ void __init init_ISA_irqs(void)
         }
 }
 
+/*
+ * IRQ2 is cascade interrupt to second interrupt controller
+ */
+static struct irqaction irq2 = {
+        .handler = no_action,
+        .mask = CPU_MASK_NONE,
+        .name = "cascade",
+};
+
 DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
         [0 ... IRQ0_VECTOR - 1] = -1,
         [IRQ0_VECTOR] = 0,
@@ -176,6 +185,9 @@ void __init native_init_IRQ(void)
         alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
 #endif
 
+        if (!acpi_ioapic)
+                setup_irq(2, &irq2);
+
         /* setup after call gates are initialised (usually add in
          * the architecture specific gates)
          */