diff --git a/drivers/staging/unisys/visorutil/memregion.h b/drivers/staging/unisys/visorutil/memregion.h
index 1eb3a67eef16..8f006fca73b2 100644
--- a/drivers/staging/unisys/visorutil/memregion.h
+++ b/drivers/staging/unisys/visorutil/memregion.h
@@ -23,7 +23,11 @@
 /* struct memregion is an opaque structure to users.
  * Fields are declared only in the implementation .c files.
  */
-struct memregion;
+struct memregion {
+	HOSTADDRESS physaddr;
+	ulong nbytes;
+	void __iomem *mapped;
+};
 
 struct memregion *visor_memregion_create(HOSTADDRESS physaddr, ulong nbytes);
 int visor_memregion_resize(struct memregion *memregion, ulong newsize);
diff --git a/drivers/staging/unisys/visorutil/memregion_direct.c b/drivers/staging/unisys/visorutil/memregion_direct.c
index 96460d7fdf0a..4ad25df767cd 100644
--- a/drivers/staging/unisys/visorutil/memregion_direct.c
+++ b/drivers/staging/unisys/visorutil/memregion_direct.c
@@ -25,12 +25,6 @@
 
 #define MYDRVNAME "memregion"
 
-struct memregion {
-	HOSTADDRESS physaddr;
-	ulong nbytes;
-	void __iomem *mapped;
-};
-
 static int mapit(struct memregion *memregion);
 static void unmapit(struct memregion *memregion);