diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index a87dd7f..58df02b 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -123,7 +123,13 @@
 	iomap->base = base;
 	iomap->size = size;
 	iomap->iomem = ioremap_wc(base, size);
+#if defined(pgprot_noncached_wc) /* archs can't agree on a name ... */
+	iomap->prot = pgprot_noncached_wc(PAGE_KERNEL);
+#elif defined(pgprot_writecombine)
 	iomap->prot = pgprot_writecombine(PAGE_KERNEL);
+#else
+	iomap->prot = pgprot_noncached(PAGE_KERNEL);
+#endif
 
 	return iomap;
 }