diff --git a/drivers/staging/android/uapi/ion.h b/drivers/staging/android/uapi/ion.h
index 5d7009884c13..50d312865730 100644
--- a/drivers/staging/android/uapi/ion.h
+++ b/drivers/staging/android/uapi/ion.h
@@ -48,6 +48,12 @@ enum ion_heap_type {
  */
 #define ION_FLAG_CACHED 1
 
+/*
+ * mappings of this buffer should be limit to 32bits, ion will add GFP_DMA32
+ * when the buffer allocates pages from system
+ */
+#define ION_FLAG_DMA32 4
+
 /**
  * DOC: Ion Userspace API
  *