diff --git a/include/linux/mtd/physmap.h b/include/linux/mtd/physmap.h
index 49b9590..697cc98 100644
--- a/include/linux/mtd/physmap.h
+++ b/include/linux/mtd/physmap.h
@@ -19,6 +19,7 @@
 #include <linux/mtd/partitions.h>
 
 struct map_info;
+struct platform_device;
 
 struct physmap_flash_data {
 	unsigned int		width;