diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index eee97bb..7c41dab 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -356,7 +356,7 @@ void forward_interrupts(int pid)
 unsigned int do_IRQ(int irq, union uml_pt_regs *regs)
 {
        irq_enter();
-       __do_IRQ(irq, (struct pt_regs *)regs);
+       __do_IRQ(irq);
        irq_exit();
        return 1;
 }
diff --git a/include/asm-um/irq_regs.h b/include/asm-um/irq_regs.h
new file mode 100644
index 0000000..3dd9c0b
--- /dev/null
+++ b/include/asm-um/irq_regs.h
@@ -0,0 +1 @@
+#include <asm-generic/irq_regs.h>