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-rw-r--r--include/linux/rtc.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 5b13fa029fd6..41319a2e409b 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Generic RTC interface.
* This version contains the part of the user interface to the Real Time Clock