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-rw-r--r--block/opal_proto.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/opal_proto.h b/block/opal_proto.h
index f40c9acf8895..e20be8258854 100644
--- a/block/opal_proto.h
+++ b/block/opal_proto.h
@@ -46,6 +46,7 @@ enum opal_response_token {
#define GENERIC_HOST_SESSION_NUM 0x41
#define TPER_SYNC_SUPPORTED 0x01
+#define MBR_ENABLED_MASK 0x10
#define TINY_ATOM_DATA_MASK 0x3F
#define TINY_ATOM_SIGNED 0x40