1 files changed, 19 insertions, 1 deletions

diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c
index 368b0a8836f9..0c0dedccd036 100644
--- a/arch/x86/kernel/irqinit_32.c
+++ b/arch/x86/kernel/irqinit_32.c
@@ -53,7 +53,7 @@ static struct irqaction fpu_irq = {
         .name = "fpu",
 };
 
-void __init init_ISA_irqs(void)
+static void __init init_ISA_irqs(void)
 {
         int i;
 
@@ -121,6 +121,24 @@ int vector_used_by_percpu_irq(unsigned int vector)
 /* Overridden in paravirt.c */
 void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
 
+/**
+ * x86_quirk_pre_intr_init - initialisation prior to setting up interrupt vectors
+ *
+ * Description:
+ *      Perform any necessary interrupt initialisation prior to setting up
+ *      the "ordinary" interrupt call gates.  For legacy reasons, the ISA
+ *      interrupts should be initialised here if the machine emulates a PC
+ *      in any way.
+ **/
+static void __init x86_quirk_pre_intr_init(void)
+{
+        if (x86_quirks->arch_pre_intr_init) {
+                if (x86_quirks->arch_pre_intr_init())
+                        return;
+        }
+        init_ISA_irqs();
+}
+
 void __init native_init_IRQ(void)
 {
         int i;