USB: serial: metro-usb: remove function prototypes

By rearranging the functions a bit, we can remove all function
prototypes.

Note, this also deleted the _close function, as it wasn't needed, it was
doing the same thing the cleanup function did, so just call that
instead.

Cc: Aleksey Babahin <tamerlan311@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/metro-usb.c

@@ -56,89 +56,115 @@ MODULE_DEVICE_TABLE(usb, id_table);
 /* Input parameter constants. */
 static bool debug;
 
-/* Function prototypes. */
-static void metrousb_cleanup(struct usb_serial_port *port);
-static void metrousb_close(struct usb_serial_port *port);
-static int  metrousb_open(struct tty_struct *tty, struct usb_serial_port *port);
-static void metrousb_read_int_callback(struct urb *urb);
-static void metrousb_shutdown(struct usb_serial *serial);
-static int metrousb_startup(struct usb_serial *serial);
-static void metrousb_throttle(struct tty_struct *tty);
-static int metrousb_tiocmget(struct tty_struct *tty);
-static int metrousb_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear);
-static void metrousb_unthrottle(struct tty_struct *tty);
-
-/* Driver structure. */
-static struct usb_driver metrousb_driver = {
-	.name =		"metro-usb",
-	.probe =	usb_serial_probe,
-	.disconnect =	usb_serial_disconnect,
-	.id_table =	id_table
-};
-
-/* Device structure. */
-static struct usb_serial_driver metrousb_device = {
-	.driver = {
-		.owner =	THIS_MODULE,
-		.name =		"metro-usb",
-	},
-	.description		= "Metrologic USB to serial converter.",
-	.id_table		= id_table,
-	.num_ports		= 1,
-	.open			= metrousb_open,
-	.close			= metrousb_close,
-	.read_int_callback	= metrousb_read_int_callback,
-	.attach			= metrousb_startup,
-	.release		= metrousb_shutdown,
-	.throttle		= metrousb_throttle,
-	.unthrottle		= metrousb_unthrottle,
-	.tiocmget		= metrousb_tiocmget,
-	.tiocmset		= metrousb_tiocmset,
-};
-
-static struct usb_serial_driver * const serial_drivers[] = {
-	&metrousb_device,
-	NULL,
-};
-
 /* ----------------------------------------------------------------------------------------------
   Description:
-	Clean up any urbs and port information.
+	Read the port from the read interrupt.
 
   Input:
-	struct usb_serial_port *: pointer to a usb_serial_port structure.
+	struct urb *: urb structure to get data.
+	struct pt_regs *: pt_regs structure.
 
   Output:
-	int: Returns true (0) if successful, false otherwise.
+	None:
 */
-static void metrousb_cleanup(struct usb_serial_port *port)
+static void metrousb_read_int_callback(struct urb *urb)
 {
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
+	struct tty_struct *tty;
+	unsigned char *data = urb->transfer_buffer;
+	int throttled = 0;
+	int result = 0;
+	unsigned long flags = 0;
+
 	dbg("METRO-USB - %s - port number=%d", __FUNCTION__, port->number);
 
-	if (port->serial->dev) {
-		/* Shutdown any interrupt in urbs. */
-		if (port->interrupt_in_urb) {
-			usb_unlink_urb(port->interrupt_in_urb);
-			usb_kill_urb(port->interrupt_in_urb);
+	switch (urb->status) {
+	case 0:
+		/* Success status, read from the port. */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* urb has been terminated. */
+		dbg("METRO-USB - %s - urb shutting down, port number=%d, error code=%d",
+			__FUNCTION__, port->number, result);
+		return;
+	default:
+		dbg("METRO-USB - %s - non-zero urb received, port number=%d, error code=%d",
+			__FUNCTION__, port->number, result);
+		goto exit;
+	}
+
+
+	/* Set the data read from the usb port into the serial port buffer. */
+	tty = tty_port_tty_get(&port->port);
+	if (!tty) {
+		dbg("%s - bad tty pointer - exiting", __func__);
+		return;
+	}
+
+	if (tty && urb->actual_length) {
+		/* Loop through the data copying each byte to the tty layer. */
+		tty_insert_flip_string(tty, data, urb->actual_length);
+
+		/* Force the data to the tty layer. */
+		tty_flip_buffer_push(tty);
+	}
+	tty_kref_put(tty);
+
+	/* Set any port variables. */
+	spin_lock_irqsave(&metro_priv->lock, flags);
+	throttled = metro_priv->throttled;
+	spin_unlock_irqrestore(&metro_priv->lock, flags);
+
+	/* Continue trying to read if set. */
+	if (!throttled) {
+		usb_fill_int_urb(port->interrupt_in_urb, port->serial->dev,
+				 usb_rcvintpipe(port->serial->dev, port->interrupt_in_endpointAddress),
+				 port->interrupt_in_urb->transfer_buffer,
+				 port->interrupt_in_urb->transfer_buffer_length,
+				 metrousb_read_int_callback, port, 1);
+
+		result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
+
+		if (result) {
+			dbg("METRO-USB - %s - failed submitting interrupt in urb for port number=%d, error code=%d",
+				__FUNCTION__, port->number, result);
 		}
 	}
+	return;
+
+exit:
+	/* Try to resubmit the urb. */
+	result = usb_submit_urb(urb, GFP_ATOMIC);
+	if (result) {
+		dbg("METRO-USB - %s - failed submitting interrupt in urb for port number=%d, error code=%d",
+			__FUNCTION__, port->number, result);
+	}
 }
 
 /* ----------------------------------------------------------------------------------------------
   Description:
-	Close the open serial port. Cleanup any open serial port information.
+	Clean up any urbs and port information.
 
   Input:
 	struct usb_serial_port *: pointer to a usb_serial_port structure.
-	struct file *: pointer to a file structure.
 
   Output:
 	int: Returns true (0) if successful, false otherwise.
 */
-static void metrousb_close(struct usb_serial_port *port)
+static void metrousb_cleanup(struct usb_serial_port *port)
 {
 	dbg("METRO-USB - %s - port number=%d", __FUNCTION__, port->number);
-	metrousb_cleanup(port);
+
+	if (port->serial->dev) {
+		/* Shutdown any interrupt in urbs. */
+		if (port->interrupt_in_urb) {
+			usb_unlink_urb(port->interrupt_in_urb);
+			usb_kill_urb(port->interrupt_in_urb);
+		}
+	}
 }
 
 /* ----------------------------------------------------------------------------------------------
@@ -203,94 +229,6 @@ static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port)
 	return result;
 }
 
-/* ----------------------------------------------------------------------------------------------
-  Description:
-	Read the port from the read interrupt.
-
-  Input:
-	struct urb *: urb structure to get data.
-	struct pt_regs *: pt_regs structure.
-
-  Output:
-	None:
-*/
-static void metrousb_read_int_callback(struct urb *urb)
-{
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
-	struct tty_struct *tty;
-	unsigned char *data = urb->transfer_buffer;
-	int throttled = 0;
-	int result = 0;
-	unsigned long flags = 0;
-
-	dbg("METRO-USB - %s - port number=%d", __FUNCTION__, port->number);
-
-	switch (urb->status) {
-	case 0:
-		/* Success status, read from the port. */
-		break;
-	case -ECONNRESET:
-	case -ENOENT:
-	case -ESHUTDOWN:
-		/* urb has been terminated. */
-		dbg("METRO-USB - %s - urb shutting down, port number=%d, error code=%d",
-			__FUNCTION__, port->number, result);
-		return;
-	default:
-		dbg("METRO-USB - %s - non-zero urb received, port number=%d, error code=%d",
-			__FUNCTION__, port->number, result);
-		goto exit;
-	}
-
-
-	/* Set the data read from the usb port into the serial port buffer. */
-	tty = tty_port_tty_get(&port->port);
-	if (!tty) {
-		dbg("%s - bad tty pointer - exiting", __func__);
-		return;
-	}
-
-	if (tty && urb->actual_length) {
-		/* Loop through the data copying each byte to the tty layer. */
-		tty_insert_flip_string(tty, data, urb->actual_length);
-
-		/* Force the data to the tty layer. */
-		tty_flip_buffer_push(tty);
-	}
-	tty_kref_put(tty);
-
-	/* Set any port variables. */
-	spin_lock_irqsave(&metro_priv->lock, flags);
-	throttled = metro_priv->throttled;
-	spin_unlock_irqrestore(&metro_priv->lock, flags);
-
-	/* Continue trying to read if set. */
-	if (!throttled) {
-		usb_fill_int_urb(port->interrupt_in_urb, port->serial->dev,
-				 usb_rcvintpipe(port->serial->dev, port->interrupt_in_endpointAddress),
-				 port->interrupt_in_urb->transfer_buffer,
-				 port->interrupt_in_urb->transfer_buffer_length,
-				 metrousb_read_int_callback, port, 1);
-
-		result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
-
-		if (result) {
-			dbg("METRO-USB - %s - failed submitting interrupt in urb for port number=%d, error code=%d",
-				__FUNCTION__, port->number, result);
-		}
-	}
-	return;
-
-exit:
-	/* Try to resubmit the urb. */
-	result = usb_submit_urb(urb, GFP_ATOMIC);
-	if (result) {
-		dbg("METRO-USB - %s - failed submitting interrupt in urb for port number=%d, error code=%d",
-			__FUNCTION__, port->number, result);
-	}
-}
-
 /* ----------------------------------------------------------------------------------------------
   Description:
 	Set the modem control state for the entered serial port.
@@ -522,6 +460,39 @@ static void metrousb_unthrottle(struct tty_struct *tty)
 	}
 }
 
+/* Driver structure. */
+static struct usb_driver metrousb_driver = {
+	.name =		"metro-usb",
+	.probe =	usb_serial_probe,
+	.disconnect =	usb_serial_disconnect,
+	.id_table =	id_table
+};
+
+/* Device structure. */
+static struct usb_serial_driver metrousb_device = {
+	.driver = {
+		.owner =	THIS_MODULE,
+		.name =		"metro-usb",
+	},
+	.description		= "Metrologic USB to serial converter.",
+	.id_table		= id_table,
+	.num_ports		= 1,
+	.open			= metrousb_open,
+	.close			= metrousb_cleanup,
+	.read_int_callback	= metrousb_read_int_callback,
+	.attach			= metrousb_startup,
+	.release		= metrousb_shutdown,
+	.throttle		= metrousb_throttle,
+	.unthrottle		= metrousb_unthrottle,
+	.tiocmget		= metrousb_tiocmget,
+	.tiocmset		= metrousb_tiocmset,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+	&metrousb_device,
+	NULL,
+};
+
 module_usb_serial_driver(metrousb_driver, serial_drivers);
 
 MODULE_LICENSE("GPL");