diff --git a/include/linux/irq.h b/include/linux/irq.h
index 80713d6e8c8d..eac1273dc4e1 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -170,11 +170,15 @@ static inline void set_balance_irq_affinity(unsigned int irq, cpumask_t mask)
 extern int no_irq_affinity;
 extern int noirqdebug_setup(char *str);
 
-extern fastcall irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
-					struct irqaction *action);
+extern irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
+				    struct irqaction *action);
+/*
+ * Explicit fastcall, because i386 4KSTACKS calls it from assembly:
+ */
 extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);
+
 extern void note_interrupt(unsigned int irq, irq_desc_t *desc,
-					int action_ret, struct pt_regs *regs);
+			   int action_ret, struct pt_regs *regs);
 extern int can_request_irq(unsigned int irq, unsigned long irqflags);
 
 extern void init_irq_proc(void);
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index cc786aaf30d6..6b313ccf0edd 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -79,8 +79,8 @@ irqreturn_t no_action(int cpl, void *dev_id, struct pt_regs *regs)
 /*
  * Have got an event to handle:
  */
-fastcall irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
-				struct irqaction *action)
+irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
+			     struct irqaction *action)
 {
 	irqreturn_t ret, retval = IRQ_NONE;
 	unsigned int status = 0;