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-rw-r--r--common/debug.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/common/debug.c b/common/debug.c
index 924c0dd..1012887 100644
--- a/common/debug.c
+++ b/common/debug.c
@@ -1,3 +1,6 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/* Copyright 2021 - 2022, Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
+
/**
* @file debug.c
* Handle printing to serial. Note that the serial drivers are only included