diff --git a/libsync/include/sync/sync.h b/libsync/include/sync/sync.h
index 8755d2b..d29ed85 100644
--- a/libsync/include/sync/sync.h
+++ b/libsync/include/sync/sync.h
@@ -32,19 +32,8 @@
 
 #include "../ndk/sync.h"
 
-#include <sys/cdefs.h>
-#include <stdint.h>
-
-#include <linux/types.h>
-
 __BEGIN_DECLS
 
-struct sync_legacy_merge_data {
- int32_t fd2;
- char name[32];
- int32_t fence;
-};
-
 struct sync_fence_info_data {
  uint32_t len;
  char name[32];
@@ -61,48 +50,6 @@
  uint8_t driver_data[0];
 };
 
-#define SYNC_IOC_MAGIC		'>'
-
-/**
- * DOC: SYNC_IOC_LEGACY_WAIT - wait for a fence to signal
- *
- * pass timeout in milliseconds.  Waits indefinitely timeout < 0.
- *
- * This is the legacy version of the Sync API before the de-stage that happened
- * on Linux kernel 4.7.
- */
-#define SYNC_IOC_LEGACY_WAIT	_IOW(SYNC_IOC_MAGIC, 0, __s32)
-
-/**
- * DOC: SYNC_IOC_MERGE - merge two fences
- *
- * Takes a struct sync_merge_data.  Creates a new fence containing copies of
- * the sync_pts in both the calling fd and sync_merge_data.fd2.  Returns the
- * new fence's fd in sync_merge_data.fence
- *
- * This is the legacy version of the Sync API before the de-stage that happened
- * on Linux kernel 4.7.
- */
-#define SYNC_IOC_LEGACY_MERGE	_IOWR(SYNC_IOC_MAGIC, 1, \
-	struct sync_legacy_merge_data)
-
-/**
- * DOC: SYNC_IOC_LEGACY_FENCE_INFO - get detailed information on a fence
- *
- * Takes a struct sync_fence_info_data with extra space allocated for pt_info.
- * Caller should write the size of the buffer into len.  On return, len is
- * updated to reflect the total size of the sync_fence_info_data including
- * pt_info.
- *
- * pt_info is a buffer containing sync_pt_infos for every sync_pt in the fence.
- * To iterate over the sync_pt_infos, use the sync_pt_info.len field.
- *
- * This is the legacy version of the Sync API before the de-stage that happened
- * on Linux kernel 4.7.
- */
-#define SYNC_IOC_LEGACY_FENCE_INFO	_IOWR(SYNC_IOC_MAGIC, 2,\
-	struct sync_fence_info_data)
-
 /* timeout in msecs */
 int sync_wait(int fd, int timeout);
 struct sync_fence_info_data *sync_fence_info(int fd);
diff --git a/libsync/sync.c b/libsync/sync.c
index f3e26e1..e68cc89 100644
--- a/libsync/sync.c
+++ b/libsync/sync.c
@@ -29,6 +29,45 @@
 
 #include <sync/sync.h>
 
+/* Legacy Sync API */
+
+struct sync_legacy_merge_data {
+ int32_t fd2;
+ char name[32];
+ int32_t fence;
+};
+
+/**
+ * DOC: SYNC_IOC_MERGE - merge two fences
+ *
+ * Takes a struct sync_merge_data.  Creates a new fence containing copies of
+ * the sync_pts in both the calling fd and sync_merge_data.fd2.  Returns the
+ * new fence's fd in sync_merge_data.fence
+ *
+ * This is the legacy version of the Sync API before the de-stage that happened
+ * on Linux kernel 4.7.
+ */
+#define SYNC_IOC_LEGACY_MERGE   _IOWR(SYNC_IOC_MAGIC, 1, \
+    struct sync_legacy_merge_data)
+
+/**
+ * DOC: SYNC_IOC_LEGACY_FENCE_INFO - get detailed information on a fence
+ *
+ * Takes a struct sync_fence_info_data with extra space allocated for pt_info.
+ * Caller should write the size of the buffer into len.  On return, len is
+ * updated to reflect the total size of the sync_fence_info_data including
+ * pt_info.
+ *
+ * pt_info is a buffer containing sync_pt_infos for every sync_pt in the fence.
+ * To iterate over the sync_pt_infos, use the sync_pt_info.len field.
+ *
+ * This is the legacy version of the Sync API before the de-stage that happened
+ * on Linux kernel 4.7.
+ */
+#define SYNC_IOC_LEGACY_FENCE_INFO  _IOWR(SYNC_IOC_MAGIC, 2,\
+    struct sync_fence_info_data)
+
+/* SW Sync API */
 
 struct sw_sync_create_fence_data {
   __u32 value;