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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 325cbba2465f..b486b3ec7dc4 100644
--- a/block/opal_proto.h
+++ b/block/opal_proto.h
@@ -36,6 +36,7 @@ enum opal_response_token {
#define DTAERROR_NO_METHOD_STATUS 0x89
#define GENERIC_HOST_SESSION_NUM 0x41
+#define FIRST_TPER_SESSION_NUM 4096
#define TPER_SYNC_SUPPORTED 0x01
#define MBR_ENABLED_MASK 0x10