diff --git a/arch/sh/kernel/cpu/irq/ipr.c b/arch/sh/kernel/cpu/irq/ipr.c
index fa0c8467a28..6ad40dbad88 100644
--- a/arch/sh/kernel/cpu/irq/ipr.c
+++ b/arch/sh/kernel/cpu/irq/ipr.c
@@ -59,17 +59,21 @@ void register_ipr_controller(struct ipr_desc *desc)
 
 	for (i = 0; i < desc->nr_irqs; i++) {
 		struct ipr_data *p = desc->ipr_data + i;
+#ifdef CONFIG_SPARSE_IRQ
 		struct irq_desc *irq_desc;
+#endif
 
 		BUG_ON(p->ipr_idx >= desc->nr_offsets);
 		BUG_ON(!desc->ipr_offsets[p->ipr_idx]);
 
+#ifdef CONFIG_SPARSE_IRQ
 		irq_desc = irq_to_desc_alloc_cpu(p->irq, smp_processor_id());
 		if (unlikely(!irq_desc)) {
 			printk(KERN_INFO "can not get irq_desc for %d\n",
 			       p->irq);
 			continue;
 		}
+#endif
 
 		disable_irq_nosync(p->irq);
 		set_irq_chip_and_handler_name(p->irq, &desc->chip,
diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c
index 098b767e9af..caf06569404 100644
--- a/drivers/sh/intc.c
+++ b/drivers/sh/intc.c
@@ -771,16 +771,19 @@ void __init register_intc_controller(struct intc_desc *desc)
 	for (i = 0; i < desc->nr_vectors; i++) {
 		struct intc_vect *vect = desc->vectors + i;
 		unsigned int irq = evt2irq(vect->vect);
+#ifdef CONFIG_SPARSE_IRQ
 		struct irq_desc *irq_desc;
-
+#endif
 		if (!vect->enum_id)
 			continue;
 
+#ifdef CONFIG_SPARSE_IRQ
 		irq_desc = irq_to_desc_alloc_cpu(irq, cpu);
 		if (unlikely(!irq_desc)) {
 			printk(KERN_INFO "can not get irq_desc for %d\n", irq);
 			continue;
 		}
+#endif
 
 		intc_register_irq(desc, d, vect->enum_id, irq);
 	}