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-rw-r--r--drivers/tty/n_tracerouter.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/n_tracerouter.c b/drivers/tty/n_tracerouter.c
index ac5716979bc1..717d0c111b72 100644
--- a/drivers/tty/n_tracerouter.c
+++ b/drivers/tty/n_tracerouter.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* n_tracerouter.c - Trace data router through tty space
*
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