USB: serial: io_ti: drop closing_wait module parameter

Now that all USB serial drivers supports setting the closing_wait
parameter through TIOCSSERIAL (setserial) it's time to drop the
corresponding io_ti module parameter.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

drivers/usb/serial/io_ti.c

@@ -211,7 +211,6 @@ static const struct usb_device_id id_table_combined[] = {
 
 MODULE_DEVICE_TABLE(usb, id_table_combined);
 
-static int closing_wait = EDGE_CLOSING_WAIT;
 static bool ignore_cpu_rev;
 static int default_uart_mode;		/* RS232 */
 
@@ -2593,7 +2592,7 @@ static int edge_port_probe(struct usb_serial_port *port)
 	if (ret)
 		goto err;
 
-	port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
+	port->port.closing_wait = msecs_to_jiffies(EDGE_CLOSING_WAIT * 10);
 	port->port.drain_delay = 1;
 
 	return 0;
@@ -2759,9 +2758,6 @@ MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
 MODULE_FIRMWARE("edgeport/down3.bin");
 
-module_param(closing_wait, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
-
 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(ignore_cpu_rev,
 			"Ignore the cpu revision when connecting to a device");