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-rw-r--r--drivers/tty/mxser.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 79d7cecb7765..a830a4359ea1 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -51,7 +51,6 @@
#define MOXA 0x400
#define MOXA_GETDATACOUNT (MOXA + 23)
-#define MOXA_DIAGNOSE (MOXA + 50)
#define MOXA_CHKPORTENABLE (MOXA + 60)
#define MOXA_HighSpeedOn (MOXA + 61)
#define MOXA_GET_MAJOR (MOXA + 63)