diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c
index a48dc2d..0d4db8c 100644
--- a/arch/arm/mach-lpc32xx/common.c
+++ b/arch/arm/mach-lpc32xx/common.c
@@ -177,25 +177,25 @@
 
 static struct map_desc lpc32xx_io_desc[] __initdata = {
 	{
-		.virtual	= IO_ADDRESS(LPC32XX_AHB0_START),
+		.virtual	= (unsigned long)IO_ADDRESS(LPC32XX_AHB0_START),
 		.pfn		= __phys_to_pfn(LPC32XX_AHB0_START),
 		.length		= LPC32XX_AHB0_SIZE,
 		.type		= MT_DEVICE
 	},
 	{
-		.virtual	= IO_ADDRESS(LPC32XX_AHB1_START),
+		.virtual	= (unsigned long)IO_ADDRESS(LPC32XX_AHB1_START),
 		.pfn		= __phys_to_pfn(LPC32XX_AHB1_START),
 		.length		= LPC32XX_AHB1_SIZE,
 		.type		= MT_DEVICE
 	},
 	{
-		.virtual	= IO_ADDRESS(LPC32XX_FABAPB_START),
+		.virtual	= (unsigned long)IO_ADDRESS(LPC32XX_FABAPB_START),
 		.pfn		= __phys_to_pfn(LPC32XX_FABAPB_START),
 		.length		= LPC32XX_FABAPB_SIZE,
 		.type		= MT_DEVICE
 	},
 	{
-		.virtual	= IO_ADDRESS(LPC32XX_IRAM_BASE),
+		.virtual	= (unsigned long)IO_ADDRESS(LPC32XX_IRAM_BASE),
 		.pfn		= __phys_to_pfn(LPC32XX_IRAM_BASE),
 		.length		= (LPC32XX_IRAM_BANK_SIZE * 2),
 		.type		= MT_DEVICE
diff --git a/arch/arm/mach-lpc32xx/include/mach/hardware.h b/arch/arm/mach-lpc32xx/include/mach/hardware.h
index 33e1dde..69065de 100644
--- a/arch/arm/mach-lpc32xx/include/mach/hardware.h
+++ b/arch/arm/mach-lpc32xx/include/mach/hardware.h
@@ -25,7 +25,7 @@
 /*
  * This macro relies on fact that for all HW i/o addresses bits 20-23 are 0
  */
-#define IO_ADDRESS(x)	(((((x) & 0xff000000) >> 4) | ((x) & 0xfffff)) |\
+#define IO_ADDRESS(x)	IOMEM(((((x) & 0xff000000) >> 4) | ((x) & 0xfffff)) |\
 			 IO_BASE)
 
 #define io_p2v(x)	((void __iomem *) (unsigned long) IO_ADDRESS(x))