diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c
index 4f85fff..d0ca968 100644
--- a/arch/sh/kernel/io.c
+++ b/arch/sh/kernel/io.c
@@ -62,6 +62,8 @@
 }
 EXPORT_SYMBOL(memset_io);
 
+#ifndef CONFIG_GENERIC_IOMAP
+
 void __iomem *ioport_map(unsigned long port, unsigned int nr)
 {
 	void __iomem *ret;
@@ -79,3 +81,5 @@
 	sh_mv.mv_ioport_unmap(addr);
 }
 EXPORT_SYMBOL(ioport_unmap);
+
+#endif /* CONFIG_GENERIC_IOMAP */