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-rw-r--r--drivers/tty/serial/zs.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c
index d32bd499d684..b03d3e458ea2 100644
--- a/drivers/tty/serial/zs.c
+++ b/drivers/tty/serial/zs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* zs.c: Serial port driver for IOASIC DECstations.
*