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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c
index 66e9355..8758e01 100644 (file)
--- a/drivers/usb/serial/metro-usb.c
+++ b/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);
+               }
+       }
 }
 
 /* ----------------------------------------------------------------------------------------------
@@ -205,94 +231,6 @@ exit:
 
 /* ----------------------------------------------------------------------------------------------
   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.
 
   Input:
@@ -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");