1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/memremap.c b/kernel/memremap.c
index 7658d32c5c78..449cb6a5d9a1 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -12,6 +12,7 @@
  */
 #include <linux/device.h>
 #include <linux/types.h>
+#include <linux/pfn_t.h>
 #include <linux/io.h>
 #include <linux/mm.h>
 #include <linux/memory_hotplug.h>
@@ -147,6 +148,12 @@ void devm_memunmap(struct device *dev, void *addr)
 }
 EXPORT_SYMBOL(devm_memunmap);
 
+pfn_t phys_to_pfn_t(dma_addr_t addr, unsigned long flags)
+{
+	return __pfn_to_pfn_t(addr >> PAGE_SHIFT, flags);
+}
+EXPORT_SYMBOL(phys_to_pfn_t);
+
 #ifdef CONFIG_ZONE_DEVICE
 struct page_map {
 	struct resource res;