diff --git a/include/linux/ioport.h b/include/linux/ioport.h
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -114,7 +114,6 @@ extern struct resource * __request_regio
 
 /* Compatibility cruft */
 #define release_region(start,n)	__release_region(&ioport_resource, (start), (n))
-#define check_mem_region(start,n)	__check_region(&iomem_resource, (start), (n))
 #define release_mem_region(start,n)	__release_region(&iomem_resource, (start), (n))
 
 extern int __check_region(struct resource *, unsigned long, unsigned long);