USB: serial: metro-usb: fix up coding style errors

This fixes up all of the coding style errors, and removes the initial,
unneeded comments on how to load the module and the old changelog which
are no longer needed.

There are still a number of coding style warnings left, I'll get to them
later.

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

drivers/usb/serial/metro-usb.c

@@ -1,32 +1,9 @@
 /*
-  Date Created:	9/15/2006
-  File Name:		metro-usb.c
-  Description:	metro-usb.c is the drivers main source file. The driver is a USB to Serial converter.
-		The driver takes USB data and sends it to a virtual ttyUSB# serial port.
-		The driver interfaces with the usbserial.ko driver supplied by Linux.
-
-		NOTES:
-		To install the driver:
-		1. Install the usbserial.ko module supplied by Linux with: # insmod usbserial.ko
-		2. Install the metro-usb.ko module with: # insmod metro-usb.ko
-
-		Some of this code is credited to Linux USB open source files that are distributed with Linux.
+  Some of this code is credited to Linux USB open source files that are
+  distributed with Linux.
 
   Copyright:	2007 Metrologic Instruments. All rights reserved.
   Copyright:	2011 Azimut Ltd. <http://azimutrzn.ru/>
-  Requirements: gedit.exe, notepad.exe
- 
-  Revision History:
-
-  Date:			Developer:			Revisions:
-  ------------------------------------------------------------------------------
-  1/30/2007		Philip Nicastro		Initial release. (v1.0.0.0)
-  2/27/2007		Philip Nicastro		Changed the metrousb_read_int_callback function to use a loop with the tty_insert_flip_char function to copy each byte to the tty layer. Removed the tty_buffer_request_room and the tty_insert_flip_string function calls. These calls were not supported on Fedora.
-  2/27/2007		Philip Nicastro		Released. (v1.1.0.0)
-  10/07/2011		Aleksey Babahin		Update for new kernel (tested on 2.6.38)
-						Add unidirection mode support
- 
- 
 */
 
 #include <linux/kernel.h>
@@ -41,8 +18,8 @@
 #include <linux/moduleparam.h>
 #include <linux/spinlock.h>
 #include <linux/errno.h>
+#include <linux/uaccess.h>
 #include <linux/usb/serial.h>
-#include <asm/uaccess.h>
 
 /* Version Information */
 #define DRIVER_VERSION "v1.2.0.0"
@@ -59,7 +36,7 @@
 #define METROUSB_MCR_NONE		0x08	/* Deactivate DTR and RTS. */
 #define METROUSB_MCR_RTS		0x0a	/* Activate RTS. */
 #define METROUSB_MCR_DTR		0x09	/* Activate DTR. */
-#define WDR_TIMEOUT			5000 	/* default urb timeout. */
+#define WDR_TIMEOUT			5000	/* default urb timeout. */
 
 /* Private data structure. */
 struct metrousb_private {
@@ -69,7 +46,7 @@ struct metrousb_private {
 };
 
 /* Device table list. */
-static struct usb_device_id id_table [] = {
+static struct usb_device_id id_table[] = {
 	{ USB_DEVICE(FOCUS_VENDOR_ID, FOCUS_PRODUCT_ID) },
 	{ USB_DEVICE(FOCUS_VENDOR_ID, FOCUS_PRODUCT_ID_UNI) },
 	{ }, /* Terminating entry. */
@@ -80,12 +57,12 @@ MODULE_DEVICE_TABLE(usb, id_table);
 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_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);
@@ -105,18 +82,18 @@ static struct usb_serial_driver metrousb_device = {
 		.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,
+	.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[] = {
@@ -134,7 +111,7 @@ static struct usb_serial_driver * const serial_drivers[] = {
   Output:
 	int: Returns true (0) if successful, false otherwise.
 */
-static void metrousb_cleanup (struct usb_serial_port *port)
+static void metrousb_cleanup(struct usb_serial_port *port)
 {
 	dbg("METRO-USB - %s - port number=%d", __FUNCTION__, port->number);
 
@@ -144,12 +121,6 @@ static void metrousb_cleanup (struct usb_serial_port *port)
 			usb_unlink_urb(port->interrupt_in_urb);
 			usb_kill_urb(port->interrupt_in_urb);
 		}
-
-		// temp
-		// this will be needed for the write urb
-		/* Shutdown any interrupt_out_urbs. */
-		//if (serial->num_bulk_in)
-		//	usb_kill_urb(port->read_urb);
 	}
 }
 
@@ -164,7 +135,7 @@ static void metrousb_cleanup (struct usb_serial_port *port)
   Output:
 	int: Returns true (0) if successful, false otherwise.
 */
-static void metrousb_close (struct usb_serial_port *port)
+static void metrousb_close(struct usb_serial_port *port)
 {
 	dbg("METRO-USB - %s - port number=%d", __FUNCTION__, port->number);
 	metrousb_cleanup(port);
@@ -181,7 +152,7 @@ static void metrousb_close (struct usb_serial_port *port)
   Output:
 	int: Returns true (0) if successful, false otherwise.
 */
-static int metrousb_open (struct tty_struct *tty, struct usb_serial_port *port)
+static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port)
 {
 	struct usb_serial *serial = port->serial;
 	struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
@@ -207,16 +178,15 @@ static int metrousb_open (struct tty_struct *tty, struct usb_serial_port *port)
 	 * through, otherwise it is scheduled, and with high data rates (like
 	 * with OHCI) data can get lost.
 	 */
-	if (tty) {
+	if (tty)
 		tty->low_latency = 1;
-	}
 
 	/* Clear the urb pipe. */
 	usb_clear_halt(serial->dev, port->interrupt_in_urb->pipe);
 
 	/* Start reading from the device */
-	usb_fill_int_urb (port->interrupt_in_urb, serial->dev,
-			   usb_rcvintpipe (serial->dev, port->interrupt_in_endpointAddress),
+	usb_fill_int_urb(port->interrupt_in_urb, serial->dev,
+			  usb_rcvintpipe(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);
@@ -244,7 +214,7 @@ exit:
   Output:
 	None:
 */
-static void metrousb_read_int_callback (struct urb *urb)
+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);
@@ -257,20 +227,20 @@ static void metrousb_read_int_callback (struct urb *urb)
 	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;
+	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;
 	}
 
 
@@ -282,10 +252,10 @@ static void metrousb_read_int_callback (struct urb *urb)
 	}
 
 	if (tty && urb->actual_length) {
-		// Loop through the data copying each byte to the tty layer.
+		/* 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.
+		/* Force the data to the tty layer. */
 		tty_flip_buffer_push(tty);
 	}
 	tty_kref_put(tty);
@@ -297,11 +267,11 @@ static void metrousb_read_int_callback (struct urb *urb)
 
 	/* 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);
+		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);
 
@@ -314,7 +284,7 @@ static void metrousb_read_int_callback (struct urb *urb)
 
 exit:
 	/* Try to resubmit the urb. */
-	result = usb_submit_urb (urb, GFP_ATOMIC);
+	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);
@@ -366,14 +336,14 @@ static int metrousb_set_modem_ctrl(struct usb_serial *serial, unsigned int contr
   Output:
 	int: Returns true (0) if successful, false otherwise.
 */
-static void metrousb_shutdown (struct usb_serial *serial)
+static void metrousb_shutdown(struct usb_serial *serial)
 {
 	int i = 0;
 
 	dbg("METRO-USB - %s", __FUNCTION__);
 
 	/* Stop reading and writing on all ports. */
-	for (i=0; i < serial->num_ports; ++i) {
+	for (i = 0; i < serial->num_ports; ++i) {
 		/* Close any open urbs. */
 		metrousb_cleanup(serial->port[i]);
 
@@ -409,12 +379,12 @@ static int metrousb_startup(struct usb_serial *serial)
 		port = serial->port[i];
 
 		/* Declare memory. */
-		metro_priv = (struct metrousb_private *) kmalloc (sizeof(struct metrousb_private), GFP_KERNEL);
+		metro_priv = kmalloc(sizeof(struct metrousb_private), GFP_KERNEL);
 		if (!metro_priv)
 			return -ENOMEM;
 
 		/* Clear memory. */
-		memset (metro_priv, 0x00, sizeof(struct metrousb_private));
+		memset(metro_priv, 0x00, sizeof(struct metrousb_private));
 
 		/* Initialize memory. */
 		spin_lock_init(&metro_priv->lock);
@@ -436,7 +406,7 @@ static int metrousb_startup(struct usb_serial *serial)
   Output:
 	None:
 */
-static void metrousb_throttle (struct tty_struct *tty)
+static void metrousb_throttle(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
 	struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
@@ -461,7 +431,7 @@ static void metrousb_throttle (struct tty_struct *tty)
   Output:
 	int: Returns the state of the control lines.
 */
-static int metrousb_tiocmget (struct tty_struct *tty)
+static int metrousb_tiocmget(struct tty_struct *tty)
 {
 	unsigned long control_state = 0;
 	struct usb_serial_port *port = tty->driver_data;
@@ -490,8 +460,8 @@ static int metrousb_tiocmget (struct tty_struct *tty)
   Output:
 	int: Returns the state of the control lines.
 */
-static int metrousb_tiocmset (struct tty_struct *tty,
-			       unsigned int set, unsigned int clear)
+static int metrousb_tiocmset(struct tty_struct *tty,
+			     unsigned int set, unsigned int clear)
 {
 	struct usb_serial_port *port = tty->driver_data;
 	struct usb_serial *serial = port->serial;
@@ -504,7 +474,7 @@ static int metrousb_tiocmset (struct tty_struct *tty,
 	spin_lock_irqsave(&metro_priv->lock, flags);
 	control_state = metro_priv->control_state;
 
-	// Set the RTS and DTR values.
+	/* Set the RTS and DTR values. */
 	if (set & TIOCM_RTS)
 		control_state |= TIOCM_RTS;
 	if (set & TIOCM_DTR)
@@ -529,7 +499,7 @@ static int metrousb_tiocmset (struct tty_struct *tty,
   Output:
 	None:
 */
-static void metrousb_unthrottle (struct tty_struct *tty)
+static void metrousb_unthrottle(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
 	struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
@@ -555,9 +525,9 @@ static void metrousb_unthrottle (struct tty_struct *tty)
 module_usb_serial_driver(metrousb_driver, serial_drivers);
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR( "Philip Nicastro" );
-MODULE_AUTHOR( "Aleksey Babahin <tamerlan311@gmail.com>" );
-MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_AUTHOR("Philip Nicastro");
+MODULE_AUTHOR("Aleksey Babahin <tamerlan311@gmail.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
 
 /* Module input parameters */
 module_param(debug, bool, S_IRUGO | S_IWUSR);