diff --git a/mm/internal.h b/mm/internal.h
index 5ca1e7842b19..473b29ddf85d 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -1681,4 +1681,22 @@ void remap_pfn_range_prepare(struct vm_area_desc *desc, unsigned long pfn);
 int remap_pfn_range_complete(struct vm_area_struct *vma, unsigned long addr,
 		unsigned long pfn, unsigned long size, pgprot_t pgprot);
 
+static inline void io_remap_pfn_range_prepare(struct vm_area_desc *desc,
+		unsigned long orig_pfn, unsigned long size)
+{
+	const unsigned long pfn = io_remap_pfn_range_pfn(orig_pfn, size);
+
+	return remap_pfn_range_prepare(desc, pfn);
+}
+
+static inline int io_remap_pfn_range_complete(struct vm_area_struct *vma,
+		unsigned long addr, unsigned long orig_pfn, unsigned long size,
+		pgprot_t orig_prot)
+{
+	const unsigned long pfn = io_remap_pfn_range_pfn(orig_pfn, size);
+	const pgprot_t prot = pgprot_decrypted(orig_prot);
+
+	return remap_pfn_range_complete(vma, addr, pfn, size, prot);
+}
+
 #endif	/* __MM_INTERNAL_H */