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-rw-r--r--lib/check_signature.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/check_signature.c b/lib/check_signature.c
index 6b49797980c4..43a7301da7ab 100644
--- a/lib/check_signature.c
+++ b/lib/check_signature.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/io.h>
#include <linux/export.h>