diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index 067daf4db646..a9c2dec8e3fb 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -113,45 +113,6 @@ static int ark3116_read_reg(struct usb_serial *serial,
 		return buf[0];
 }
 
-static inline void ARK3116_SND(struct usb_serial *serial, int seq,
-			       __u8 request, __u8 requesttype,
-			       __u16 value, __u16 index)
-{
-	int result;
-	result = usb_control_msg(serial->dev,
-				 usb_sndctrlpipe(serial->dev, 0),
-				 request, requesttype, value, index,
-				 NULL, 0x00, 1000);
-	dbg("%03d > ok", seq);
-}
-
-static inline void ARK3116_RCV(struct usb_serial *serial, int seq,
-			       __u8 request, __u8 requesttype,
-			       __u16 value, __u16 index, __u8 expected,
-			       char *buf)
-{
-	int result;
-	result = usb_control_msg(serial->dev,
-				 usb_rcvctrlpipe(serial->dev, 0),
-				 request, requesttype, value, index,
-				 buf, 0x0000001, 1000);
-	if (result)
-		dbg("%03d < %d bytes [0x%02X]", seq, result,
-		    ((unsigned char *)buf)[0]);
-	else
-		dbg("%03d < 0 bytes", seq);
-}
-
-static inline void ARK3116_RCV_QUIET(struct usb_serial *serial,
-				     __u8 request, __u8 requesttype,
-				     __u16 value, __u16 index, char *buf)
-{
-	usb_control_msg(serial->dev,
-			usb_rcvctrlpipe(serial->dev, 0),
-			request, requesttype, value, index,
-			buf, 0x0000001, 1000);
-}
-
 static inline int calc_divisor(int bps)
 {
 	/* Original ark3116 made some exceptions in rounding here