usb: serial: dump small buffers with help of %*ph

There is a specifier we may use to dump small buffers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/keyspan.c

@@ -520,12 +520,7 @@ static void	usa28_instat_callback(struct urb *urb)
 		goto exit;
 	}
 
-	/*
-	dev_dbg(&urb->dev->dev,
-		"%s %x %x %x %x %x %x %x %x %x %x %x %x", __func__,
-		data[0], data[1], data[2], data[3], data[4], data[5],
-		data[6], data[7], data[8], data[9], data[10], data[11]);
-	*/
+	/*dev_dbg(&urb->dev->dev, "%s %12ph", __func__, data);*/
 
 	/* Now do something useful with the data */
 	msg = (struct keyspan_usa28_portStatusMessage *)data;
@@ -607,11 +602,7 @@ static void	usa49_instat_callback(struct urb *urb)
 		goto exit;
 	}
 
-	/*
-	dev_dbg(&urb->dev->dev, "%s: %x %x %x %x %x %x %x %x %x %x %x",
-		__func__, data[0], data[1], data[2], data[3], data[4],
-		data[5], data[6], data[7], data[8], data[9], data[10]);
-	*/
+	/*dev_dbg(&urb->dev->dev, "%s: %11ph", __func__, data);*/
 
 	/* Now do something useful with the data */
 	msg = (struct keyspan_usa49_portStatusMessage *)data;

drivers/usb/serial/pl2303.c

@@ -300,8 +300,7 @@ static void pl2303_set_termios(struct tty_struct *tty,
 	i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 			    GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
 			    0, 0, buf, 7, 100);
-	dev_dbg(&port->dev, "0xa1:0x21:0:0  %d - %x %x %x %x %x %x %x\n", i,
-	    buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
+	dev_dbg(&port->dev, "0xa1:0x21:0:0  %d - %7ph\n", i, buf);
 
 	if (cflag & CSIZE) {
 		switch (cflag & CSIZE) {
@@ -448,8 +447,7 @@ static void pl2303_set_termios(struct tty_struct *tty,
 	i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 			    GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
 			    0, 0, buf, 7, 100);
-	dev_dbg(&port->dev, "0xa1:0x21:0:0  %d - %x %x %x %x %x %x %x\n", i,
-	     buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
+	dev_dbg(&port->dev, "0xa1:0x21:0:0  %d - %7ph\n", i, buf);
 
 	if (cflag & CRTSCTS) {
 		if (spriv->type == HX)