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-rw-r--r--include/bbu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/bbu.h b/include/bbu.h
index 9da6785d2e..3b9d2f4bf1 100644
--- a/include/bbu.h
+++ b/include/bbu.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __INCLUDE_BBU_H
#define __INCLUDE_BBU_H