diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 2705402..26aeef5 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -194,7 +194,7 @@
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(irq_banks); i++) {
-		unsigned long base;
+		unsigned long base = 0;
 		struct omap_irq_bank *bank = irq_banks + i;
 
 		if (cpu_is_omap24xx())
@@ -202,6 +202,8 @@
 		else if (cpu_is_omap34xx())
 			base = OMAP34XX_IC_BASE;
 
+		BUG_ON(!base);
+
 		/* Static mapping, never released */
 		bank->base_reg = ioremap(base, SZ_4K);
 		if (!bank->base_reg) {