diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 90a944a..cae900a 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -141,7 +141,7 @@
 {
 	struct irqaction *action;
 
-	if (irq >= NR_IRQS)
+	if (irq >= NR_IRQS || irq_desc[irq].status & IRQ_NOREQUEST)
 		return 0;
 
 	action = irq_desc[irq].action;
@@ -356,6 +356,8 @@
 		return -EINVAL;
 	if (irq >= NR_IRQS)
 		return -EINVAL;
+	if (irq_desc[irq].status & IRQ_NOREQUEST)
+		return -EINVAL;
 	if (!handler)
 		return -EINVAL;