diff --git a/include/linux/io.h b/include/linux/io.h
index e3b2dda..3a03a36 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -58,9 +58,9 @@
 }
 #endif
 
-void __iomem * devm_ioremap(struct device *dev, unsigned long offset,
+void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
 			    unsigned long size);
-void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset,
+void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
 				    unsigned long size);
 void devm_iounmap(struct device *dev, void __iomem *addr);
 int check_signature(const volatile void __iomem *io_addr,