diff --git a/include/utils/ashmem.h b/include/utils/ashmem.h
index 0854775..9df9292 100644
--- a/include/utils/ashmem.h
+++ b/include/utils/ashmem.h
@@ -21,9 +21,9 @@
 #define ASHMEM_NOT_REAPED	0
 #define ASHMEM_WAS_REAPED	1
 
-/* Return values from ASHMEM_UNPIN: Is the mapping now pinned or unpinned? */
-#define ASHMEM_NOW_UNPINNED	0
-#define ASHMEM_NOW_PINNED	1
+/* Return values from ASHMEM_GET_PIN_STATUS: Is the mapping now pinned or unpinned? */
+#define ASHMEM_IS_UNPINNED	0
+#define ASHMEM_IS_PINNED	1
 
 #define __ASHMEMIOC		0x77
 
@@ -33,9 +33,9 @@
 #define ASHMEM_GET_SIZE		_IO(__ASHMEMIOC, 4)
 #define ASHMEM_SET_PROT_MASK	_IOW(__ASHMEMIOC, 5, unsigned long)
 #define ASHMEM_GET_PROT_MASK	_IO(__ASHMEMIOC, 6)
-#define ASHMEM_PIN		_IO(__ASHMEMIOC, 7)
-#define ASHMEM_UNPIN		_IO(__ASHMEMIOC, 8)
-#define ASHMEM_ISPINNED		_IO(__ASHMEMIOC, 9)
+#define ASHMEM_PIN		_IOW(__ASHMEMIOC, 7, struct ashmem_pin)
+#define ASHMEM_UNPIN		_IOW(__ASHMEMIOC, 8, struct ashmem_pin)
+#define ASHMEM_GET_PIN_STATUS	_IO(__ASHMEMIOC, 9)
 #define ASHMEM_PURGE_ALL_CACHES	_IO(__ASHMEMIOC, 10)
 
 #endif	/* _UTILS_ASHMEM_H */