[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / serial / omninet.c

/*
 * USB ZyXEL omni.net LCD PLUS driver
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 * See Documentation/usb/usb-serial.txt for more information on using this driver
 *
 * Please report both successes and troubles to the author at omninet@kroah.com
 * 
 * (05/30/2001) gkh
 *	switched from using spinlock to a semaphore, which fixes lots of problems.
 *
 * (04/08/2001) gb
 *	Identify version on module load.
 *
 * (11/01/2000) Adam J. Richter
 *	usb_device_id table support
 * 
 * (10/05/2000) gkh
 *	Fixed bug with urb->dev not being set properly, now that the usb
 *	core needs it.
 * 
 * (08/28/2000) gkh
 *	Added locks for SMP safeness.
 *	Fixed MOD_INC and MOD_DEC logic and the ability to open a port more 
 *	than once.
 *	Fixed potential race in omninet_write_bulk_callback
 *
 * (07/19/2000) gkh
 *	Added module_init and module_exit functions to handle the fact that this
 *	driver is a loadable module now.
 *
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>

static int debug;

/*
 * Version Information
 */
#define DRIVER_VERSION "v1.1"
#define DRIVER_AUTHOR "Alessandro Zummo"
#define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver"

#define ZYXEL_VENDOR_ID		0x0586
#define ZYXEL_OMNINET_ID	0x1000
#define BT_IGNITIONPRO_ID	0x2000  /* This one seems to be a re-branded ZyXEL device */

/* function prototypes */
static int  omninet_open		(struct usb_serial_port *port, struct file *filp);
static void omninet_close		(struct usb_serial_port *port, struct file *filp);
static void omninet_read_bulk_callback	(struct urb *urb);
static void omninet_write_bulk_callback	(struct urb *urb);
static int  omninet_write		(struct usb_serial_port *port, const unsigned char *buf, int count);
static int  omninet_write_room		(struct usb_serial_port *port);
static void omninet_shutdown		(struct usb_serial *serial);

static struct usb_device_id id_table [] = {
	{ USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
	{ USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
	{ }						/* Terminating entry */
};

MODULE_DEVICE_TABLE (usb, id_table);

static struct usb_driver omninet_driver = {
	.name =		"omninet",
	.probe =	usb_serial_probe,
	.disconnect =	usb_serial_disconnect,
	.id_table =	id_table,
	.no_dynamic_id = 	1,
};


static struct usb_serial_driver zyxel_omninet_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"omninet",
	},
	.description =		"ZyXEL - omni.net lcd plus usb",
	.id_table =		id_table,
	.num_interrupt_in =	1,
	.num_bulk_in =		1,
	.num_bulk_out =		2,
	.num_ports =		1,
	.open =			omninet_open,
	.close =		omninet_close,
	.write =		omninet_write,
	.write_room =		omninet_write_room,
	.read_bulk_callback =	omninet_read_bulk_callback,
	.write_bulk_callback =	omninet_write_bulk_callback,
	.shutdown =		omninet_shutdown,
};


/* The protocol.
 *
 * The omni.net always exchange 64 bytes of data with the host. The first
 * four bytes are the control header, you can see it in the above structure.
 *
 * oh_seq is a sequence number. Don't know if/how it's used.
 * oh_len is the length of the data bytes in the packet.
 * oh_xxx Bit-mapped, related to handshaking and status info.
 *	I normally set it to 0x03 in trasmitted frames.
 *	7: Active when the TA is in a CONNECTed state.
 *	6: unknown
 *	5: handshaking, unknown
 *	4: handshaking, unknown
 *	3: unknown, usually 0
 *	2: unknown, usually 0
 *	1: handshaking, unknown, usually set to 1 in trasmitted frames
 *	0: handshaking, unknown, usually set to 1 in trasmitted frames
 * oh_pad Probably a pad byte.
 *
 * After the header you will find data bytes if oh_len was greater than zero.
 *
 */

struct omninet_header
{
	__u8	oh_seq;
	__u8	oh_len;
	__u8	oh_xxx;
	__u8	oh_pad;
};

struct omninet_data
{
	__u8	od_outseq;	// Sequence number for bulk_out URBs
};

static int omninet_open (struct usb_serial_port *port, struct file *filp)
{
	struct usb_serial	*serial = port->serial;
	struct usb_serial_port	*wport;
	struct omninet_data	*od;
	int			result = 0;

	dbg("%s - port %d", __FUNCTION__, port->number);

	od = kmalloc( sizeof(struct omninet_data), GFP_KERNEL );
	if( !od ) {
		err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct omninet_data));
		return -ENOMEM;
	}

	usb_set_serial_port_data(port, od);
	wport = serial->port[1];
	wport->tty = port->tty;

	/* Start reading from the device */
	usb_fill_bulk_urb(port->read_urb, serial->dev, 
		      usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
		      port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
		      omninet_read_bulk_callback, port);
	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
	if (result)
		err("%s - failed submitting read urb, error %d", __FUNCTION__, result);

	return result;
}

static void omninet_close (struct usb_serial_port *port, struct file * filp)
{
	struct usb_serial 	*serial = port->serial;
	struct usb_serial_port 	*wport;

	dbg("%s - port %d", __FUNCTION__, port->number);

	wport = serial->port[1];
	usb_kill_urb(wport->write_urb);
	usb_kill_urb(port->read_urb);

	kfree(usb_get_serial_port_data(port));
}


#define OMNINET_DATAOFFSET	0x04
#define OMNINET_HEADERLEN	sizeof(struct omninet_header)
#define OMNINET_BULKOUTSIZE 	(64 - OMNINET_HEADERLEN)

static void omninet_read_bulk_callback (struct urb *urb)
{
	struct usb_serial_port 	*port 	= (struct usb_serial_port *)urb->context;
	unsigned char 		*data 	= urb->transfer_buffer;
	struct omninet_header 	*header = (struct omninet_header *) &data[0];

	int i;
	int result;

	dbg("%s - port %d", __FUNCTION__, port->number);

	if (urb->status) {
		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
		return;
	}

	if ((debug) && (header->oh_xxx != 0x30)) {
		if (urb->actual_length) {
			printk (KERN_DEBUG __FILE__ ": omninet_read %d: ", header->oh_len);
			for (i = 0; i < (header->oh_len + OMNINET_HEADERLEN); i++) {
				printk ("%.2x ", data[i]);
			}
			printk ("\n");
		}
	}

	if (urb->actual_length && header->oh_len) {
		for (i = 0; i < header->oh_len; i++) {
			 tty_insert_flip_char(port->tty, data[OMNINET_DATAOFFSET + i], 0);
	  	}
	  	tty_flip_buffer_push(port->tty);
	}

	/* Continue trying to always read  */
	usb_fill_bulk_urb(urb, port->serial->dev, 
		      usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
		      urb->transfer_buffer, urb->transfer_buffer_length,
		      omninet_read_bulk_callback, port);
	result = usb_submit_urb(urb, GFP_ATOMIC);
	if (result)
		err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);

	return;
}

static int omninet_write (struct usb_serial_port *port, const unsigned char *buf, int count)
{
	struct usb_serial 	*serial	= port->serial;
	struct usb_serial_port 	*wport	= serial->port[1];

	struct omninet_data 	*od 	= usb_get_serial_port_data(port);
	struct omninet_header	*header = (struct omninet_header *) wport->write_urb->transfer_buffer;

	int			result;

	dbg("%s - port %d", __FUNCTION__, port->number);

	if (count == 0) {
		dbg("%s - write request of 0 bytes", __FUNCTION__);
		return (0);
	}

	spin_lock_bh(&wport->lock);
	if (wport->write_urb_busy) {
		spin_unlock_bh(&wport->lock);
		dbg("%s - already writing", __FUNCTION__);
		return 0;
	}
	wport->write_urb_busy = 1;
	spin_unlock_bh(&wport->lock);

	count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count;

	memcpy (wport->write_urb->transfer_buffer + OMNINET_DATAOFFSET, buf, count);

	usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, wport->write_urb->transfer_buffer);

	header->oh_seq 	= od->od_outseq++;
	header->oh_len 	= count;
	header->oh_xxx  = 0x03;
	header->oh_pad 	= 0x00;

	/* send the data out the bulk port, always 64 bytes */
	wport->write_urb->transfer_buffer_length = 64;

	wport->write_urb->dev = serial->dev;
	result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
	if (result) {
		wport->write_urb_busy = 0;
		err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
	} else
		result = count;

	return result;
}


static int omninet_write_room (struct usb_serial_port *port)
{
	struct usb_serial 	*serial = port->serial;
	struct usb_serial_port 	*wport 	= serial->port[1];

	int room = 0; // Default: no room

	if (wport->write_urb_busy)
		room = wport->bulk_out_size - OMNINET_HEADERLEN;

	dbg("%s - returns %d", __FUNCTION__, room);

	return (room);
}

static void omninet_write_bulk_callback (struct urb *urb)
{
/*	struct omninet_header	*header = (struct omninet_header  *) urb->transfer_buffer; */
	struct usb_serial_port 	*port   = (struct usb_serial_port *) urb->context;

	dbg("%s - port %0x\n", __FUNCTION__, port->number);

	port->write_urb_busy = 0;
	if (urb->status) {
		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
		return;
	}

	usb_serial_port_softint(port);
}


static void omninet_shutdown (struct usb_serial *serial)
{
	dbg ("%s", __FUNCTION__);
}


static int __init omninet_init (void)
{
	int retval;
	retval = usb_serial_register(&zyxel_omninet_device);
	if (retval)
		goto failed_usb_serial_register;
	retval = usb_register(&omninet_driver);
	if (retval)
		goto failed_usb_register;
	info(DRIVER_VERSION ":" DRIVER_DESC);
	return 0;
failed_usb_register:
	usb_serial_deregister(&zyxel_omninet_device);
failed_usb_serial_register:
	return retval;
}


static void __exit omninet_exit (void)
{
	usb_deregister (&omninet_driver);
	usb_serial_deregister (&zyxel_omninet_device);
}


module_init(omninet_init);
module_exit(omninet_exit);

MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");

module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* USB ZyXEL omni.net LCD PLUS driver
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
	8	*
	9	* See Documentation/usb/usb-serial.txt for more information on using this driver
	10	*
	11	* Please report both successes and troubles to the author at omninet@kroah.com
	12	*
	13	* (05/30/2001) gkh
	14	* switched from using spinlock to a semaphore, which fixes lots of problems.
	15	*
	16	* (04/08/2001) gb
	17	* Identify version on module load.
	18	*
	19	* (11/01/2000) Adam J. Richter
	20	* usb_device_id table support
	21	*
	22	* (10/05/2000) gkh
	23	* Fixed bug with urb->dev not being set properly, now that the usb
	24	* core needs it.
	25	*
	26	* (08/28/2000) gkh
	27	* Added locks for SMP safeness.
	28	* Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
	29	* than once.
	30	* Fixed potential race in omninet_write_bulk_callback
	31	*
	32	* (07/19/2000) gkh
	33	* Added module_init and module_exit functions to handle the fact that this
	34	* driver is a loadable module now.
	35	*
	36	*/
	37
1da177e4 LT	38	#include <linux/kernel.h>
	39	#include <linux/errno.h>
	40	#include <linux/init.h>
	41	#include <linux/slab.h>
	42	#include <linux/tty.h>
	43	#include <linux/tty_driver.h>
	44	#include <linux/tty_flip.h>
	45	#include <linux/module.h>
	46	#include <linux/spinlock.h>
	47	#include <asm/uaccess.h>
	48	#include <linux/usb.h>
a969888c	49	#include <linux/usb/serial.h>
1da177e4 LT	50
	51	static int debug;
	52
	53	/*
	54	* Version Information
	55	*/
	56	#define DRIVER_VERSION "v1.1"
	57	#define DRIVER_AUTHOR "Alessandro Zummo"
	58	#define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver"
	59
	60	#define ZYXEL_VENDOR_ID 0x0586
	61	#define ZYXEL_OMNINET_ID 0x1000
	62	#define BT_IGNITIONPRO_ID 0x2000 /* This one seems to be a re-branded ZyXEL device */
	63
	64	/* function prototypes */
	65	static int omninet_open (struct usb_serial_port port, struct file filp);
	66	static void omninet_close (struct usb_serial_port port, struct file filp);
7d12e780 DH	67	static void omninet_read_bulk_callback (struct urb *urb);
7d12e780 DH	68	static void omninet_write_bulk_callback (struct urb *urb);
1da177e4 LT	69	static int omninet_write (struct usb_serial_port port, const unsigned char buf, int count);
	70	static int omninet_write_room (struct usb_serial_port *port);
	71	static void omninet_shutdown (struct usb_serial *serial);
	72
	73	static struct usb_device_id id_table [] = {
	74	{ USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
	75	{ USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
	76	{ } /* Terminating entry */
	77	};
	78
	79	MODULE_DEVICE_TABLE (usb, id_table);
	80
	81	static struct usb_driver omninet_driver = {
1da177e4 LT	82	.name = "omninet",
	83	.probe = usb_serial_probe,
	84	.disconnect = usb_serial_disconnect,
	85	.id_table = id_table,
ba9dc657	86	.no_dynamic_id = 1,
1da177e4 LT	87	};
	88
	89
ea65370d	90	static struct usb_serial_driver zyxel_omninet_device = {
18fcac35 GKH	91	.driver = {
18fcac35 GKH	92	.owner = THIS_MODULE,
269bda1c	93	.name = "omninet",
18fcac35	94	},
269bda1c	95	.description = "ZyXEL - omni.net lcd plus usb",
1da177e4 LT	96	.id_table = id_table,
	97	.num_interrupt_in = 1,
	98	.num_bulk_in = 1,
	99	.num_bulk_out = 2,
	100	.num_ports = 1,
	101	.open = omninet_open,
	102	.close = omninet_close,
	103	.write = omninet_write,
	104	.write_room = omninet_write_room,
	105	.read_bulk_callback = omninet_read_bulk_callback,
	106	.write_bulk_callback = omninet_write_bulk_callback,
	107	.shutdown = omninet_shutdown,
	108	};
	109
	110
	111	/* The protocol.
	112	*
	113	* The omni.net always exchange 64 bytes of data with the host. The first
	114	* four bytes are the control header, you can see it in the above structure.
	115	*
	116	* oh_seq is a sequence number. Don't know if/how it's used.
	117	* oh_len is the length of the data bytes in the packet.
	118	* oh_xxx Bit-mapped, related to handshaking and status info.
	119	* I normally set it to 0x03 in trasmitted frames.
	120	* 7: Active when the TA is in a CONNECTed state.
	121	* 6: unknown
	122	* 5: handshaking, unknown
	123	* 4: handshaking, unknown
	124	* 3: unknown, usually 0
	125	* 2: unknown, usually 0
	126	* 1: handshaking, unknown, usually set to 1 in trasmitted frames
	127	* 0: handshaking, unknown, usually set to 1 in trasmitted frames
	128	* oh_pad Probably a pad byte.
	129	*
	130	* After the header you will find data bytes if oh_len was greater than zero.
	131	*
	132	*/
	133
	134	struct omninet_header
	135	{
	136	__u8 oh_seq;
	137	__u8 oh_len;
	138	__u8 oh_xxx;
	139	__u8 oh_pad;
	140	};
	141
	142	struct omninet_data
	143	{
	144	__u8 od_outseq; // Sequence number for bulk_out URBs
	145	};
	146
	147	static int omninet_open (struct usb_serial_port port, struct file filp)
	148	{
	149	struct usb_serial *serial = port->serial;
	150	struct usb_serial_port *wport;
	151	struct omninet_data *od;
	152	int result = 0;
	153
	154	dbg("%s - port %d", __FUNCTION__, port->number);
	155
	156	od = kmalloc( sizeof(struct omninet_data), GFP_KERNEL );
	157	if( !od ) {
	158	err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct omninet_data));
	159	return -ENOMEM;
160	}
161
162	usb_set_serial_port_data(port, od);
163	wport = serial->port[1];
164	wport->tty = port->tty;
165
166	/* Start reading from the device */
167	usb_fill_bulk_urb(port->read_urb, serial->dev,
168	usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
169	port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
170	omninet_read_bulk_callback, port);
171	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
172	if (result)
173	err("%s - failed submitting read urb, error %d", __FUNCTION__, result);
174
175	return result;
176	}
177
178	static void omninet_close (struct usb_serial_port port, struct file filp)
179	{
180	struct usb_serial *serial = port->serial;
181	struct usb_serial_port *wport;
1da177e4 LT	182
	183	dbg("%s - port %d", __FUNCTION__, port->number);
	184
	185	wport = serial->port[1];
	186	usb_kill_urb(wport->write_urb);
	187	usb_kill_urb(port->read_urb);
	188
1bc3c9e1	189	kfree(usb_get_serial_port_data(port));
1da177e4 LT	190	}
	191
	192
	193	#define OMNINET_DATAOFFSET 0x04
	194	#define OMNINET_HEADERLEN sizeof(struct omninet_header)
	195	#define OMNINET_BULKOUTSIZE (64 - OMNINET_HEADERLEN)
	196
7d12e780	197	static void omninet_read_bulk_callback (struct urb *urb)
1da177e4 LT	198	{
	199	struct usb_serial_port port = (struct usb_serial_port )urb->context;
	200	unsigned char *data = urb->transfer_buffer;
	201	struct omninet_header header = (struct omninet_header ) &data[0];
	202
	203	int i;
	204	int result;
	205
71a8924b	206	dbg("%s - port %d", __FUNCTION__, port->number);
1da177e4 LT	207
	208	if (urb->status) {
	209	dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
	210	return;
	211	}
	212
	213	if ((debug) && (header->oh_xxx != 0x30)) {
	214	if (urb->actual_length) {
	215	printk (KERN_DEBUG __FILE__ ": omninet_read %d: ", header->oh_len);
	216	for (i = 0; i < (header->oh_len + OMNINET_HEADERLEN); i++) {
	217	printk ("%.2x ", data[i]);
	218	}
	219	printk ("\n");
	220	}
	221	}
	222
	223	if (urb->actual_length && header->oh_len) {
	224	for (i = 0; i < header->oh_len; i++) {
	225	tty_insert_flip_char(port->tty, data[OMNINET_DATAOFFSET + i], 0);
	226	}
	227	tty_flip_buffer_push(port->tty);
	228	}
	229
	230	/* Continue trying to always read */
	231	usb_fill_bulk_urb(urb, port->serial->dev,
	232	usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
	233	urb->transfer_buffer, urb->transfer_buffer_length,
	234	omninet_read_bulk_callback, port);
	235	result = usb_submit_urb(urb, GFP_ATOMIC);
	236	if (result)
	237	err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
	238
	239	return;
	240	}
	241
	242	static int omninet_write (struct usb_serial_port port, const unsigned char buf, int count)
	243	{
	244	struct usb_serial *serial = port->serial;
	245	struct usb_serial_port *wport = serial->port[1];
	246
	247	struct omninet_data *od = usb_get_serial_port_data(port);
	248	struct omninet_header header = (struct omninet_header ) wport->write_urb->transfer_buffer;
	249
	250	int result;
	251
71a8924b	252	dbg("%s - port %d", __FUNCTION__, port->number);
1da177e4 LT	253
	254	if (count == 0) {
	255	dbg("%s - write request of 0 bytes", __FUNCTION__);
	256	return (0);
	257	}
507ca9bc	258
e81ee637	259	spin_lock_bh(&wport->lock);
df3fccb1	260	if (wport->write_urb_busy) {
e81ee637	261	spin_unlock_bh(&wport->lock);
1da177e4	262	dbg("%s - already writing", __FUNCTION__);
507ca9bc	263	return 0;
1da177e4	264	}
df3fccb1	265	wport->write_urb_busy = 1;
e81ee637	266	spin_unlock_bh(&wport->lock);
1da177e4 LT	267
	268	count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count;
	269
	270	memcpy (wport->write_urb->transfer_buffer + OMNINET_DATAOFFSET, buf, count);
	271
	272	usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, wport->write_urb->transfer_buffer);
	273
	274	header->oh_seq = od->od_outseq++;
	275	header->oh_len = count;
	276	header->oh_xxx = 0x03;
	277	header->oh_pad = 0x00;
	278
	279	/* send the data out the bulk port, always 64 bytes */
	280	wport->write_urb->transfer_buffer_length = 64;
	281
	282	wport->write_urb->dev = serial->dev;
	283	result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
507ca9bc	284	if (result) {
df3fccb1	285	wport->write_urb_busy = 0;
1da177e4	286	err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
507ca9bc	287	} else
1da177e4 LT	288	result = count;
	289
	290	return result;
	291	}
	292
	293
	294	static int omninet_write_room (struct usb_serial_port *port)
	295	{
	296	struct usb_serial *serial = port->serial;
	297	struct usb_serial_port *wport = serial->port[1];
	298
	299	int room = 0; // Default: no room
	300
507ca9bc	301	if (wport->write_urb_busy)
1da177e4 LT	302	room = wport->bulk_out_size - OMNINET_HEADERLEN;
1da177e4 LT	303
71a8924b	304	dbg("%s - returns %d", __FUNCTION__, room);
1da177e4 LT	305
	306	return (room);
	307	}
	308
7d12e780	309	static void omninet_write_bulk_callback (struct urb *urb)
1da177e4 LT	310	{
	311	/* struct omninet_header header = (struct omninet_header ) urb->transfer_buffer; */
	312	struct usb_serial_port port = (struct usb_serial_port ) urb->context;
	313
71a8924b	314	dbg("%s - port %0x\n", __FUNCTION__, port->number);
1da177e4	315
507ca9bc	316	port->write_urb_busy = 0;
1da177e4 LT	317	if (urb->status) {
	318	dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
	319	return;
	320	}
	321
cf2c7481	322	usb_serial_port_softint(port);
1da177e4 LT	323	}
	324
	325
	326	static void omninet_shutdown (struct usb_serial *serial)
	327	{
	328	dbg ("%s", __FUNCTION__);
	329	}
	330
	331
	332	static int __init omninet_init (void)
	333	{
	334	int retval;
	335	retval = usb_serial_register(&zyxel_omninet_device);
	336	if (retval)
	337	goto failed_usb_serial_register;
	338	retval = usb_register(&omninet_driver);
	339	if (retval)
	340	goto failed_usb_register;
	341	info(DRIVER_VERSION ":" DRIVER_DESC);
	342	return 0;
	343	failed_usb_register:
	344	usb_serial_deregister(&zyxel_omninet_device);
	345	failed_usb_serial_register:
	346	return retval;
	347	}
	348
	349
	350	static void __exit omninet_exit (void)
	351	{
	352	usb_deregister (&omninet_driver);
	353	usb_serial_deregister (&zyxel_omninet_device);
	354	}
	355
	356
	357	module_init(omninet_init);
	358	module_exit(omninet_exit);
	359
	360	MODULE_AUTHOR( DRIVER_AUTHOR );
	361	MODULE_DESCRIPTION( DRIVER_DESC );
	362	MODULE_LICENSE("GPL");
	363
	364	module_param(debug, bool, S_IRUGO \| S_IWUSR);
	365	MODULE_PARM_DESC(debug, "Debug enabled or not");