diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 81cedca1d..2efd56360 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -241,15 +241,15 @@ static struct resource *dev_get_resource(struct device_d *dev, int num)
 	return NULL;
 }
 
-void __iomem *dev_get_mem_region(struct device_d *dev, int num)
+void *dev_get_mem_region(struct device_d *dev, int num)
 {
 	struct resource *res;
 
 	res = dev_get_resource(dev, num);
 	if (!res)
-		return res;
+		return NULL;
 
-	return (void __force __iomem *)res->start;
+	return (void __force *)res->start;
 }
 EXPORT_SYMBOL(dev_get_mem_region);
 
diff --git a/include/driver.h b/include/driver.h
index 09dd1e45c..470ae2d5f 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -183,7 +183,7 @@ static inline const char *dev_name(const struct device_d *dev)
 /*
  * get register base 'num' for a device
  */
-void __iomem *dev_get_mem_region(struct device_d *dev, int num);
+void *dev_get_mem_region(struct device_d *dev, int num);
 
 /*
  * exlusively request register base 'num' for a device