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-rw-r--r--include/uapi/linux/tty.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/tty.h b/include/uapi/linux/tty.h
index 376cccf397be..a58deb3061eb 100644
--- a/include/uapi/linux/tty.h
+++ b/include/uapi/linux/tty.h
@@ -38,5 +38,6 @@
#define N_NCI 25 /* NFC NCI UART */
#define N_SPEAKUP 26 /* Speakup communication with synths */
#define N_NULL 27 /* Null ldisc used for error handling */
+#define N_MCTP 28 /* MCTP-over-serial */
#endif /* _UAPI_LINUX_TTY_H */