2 USB Driver for Sierra Wireless
4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>
6 IMPORTANT DISCLAIMER: This driver is not commercially supported by
7 Sierra Wireless. Use at your own risk.
9 This driver is free software; you can redistribute it and/or modify
10 it under the terms of Version 2 of the GNU General Public License as
11 published by the Free Software Foundation.
13 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
14 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
17 #define DRIVER_VERSION "v.1.3.3"
18 #define DRIVER_AUTHOR "Kevin Lloyd <klloyd@sierrawireless.com>"
19 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
21 #include <linux/kernel.h>
22 #include <linux/jiffies.h>
23 #include <linux/errno.h>
24 #include <linux/tty.h>
25 #include <linux/tty_flip.h>
26 #include <linux/module.h>
27 #include <linux/usb.h>
28 #include <linux/usb/serial.h>
29 #include <linux/usb/ch9.h>
31 #define SWIMS_USB_REQUEST_SetPower 0x00
32 #define SWIMS_USB_REQUEST_SetNmea 0x07
34 /* per port private data */
37 #define IN_BUFLEN 4096
42 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
45 dev_dbg(&udev->dev, "%s", __func__);
46 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
47 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
48 USB_TYPE_VENDOR, /* __u8 request type */
49 swiState, /* __u16 value */
51 NULL, /* void *data */
53 USB_CTRL_SET_TIMEOUT); /* int timeout */
57 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
60 dev_dbg(&udev->dev, "%s", __func__);
61 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
62 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
63 USB_TYPE_VENDOR, /* __u8 request type */
64 enable, /* __u16 value */
65 0x0000, /* __u16 index */
66 NULL, /* void *data */
68 USB_CTRL_SET_TIMEOUT); /* int timeout */
72 static int sierra_calc_num_ports(struct usb_serial *serial)
75 int *num_ports = usb_get_serial_data(serial);
76 dev_dbg(&serial->dev->dev, "%s", __func__);
82 usb_set_serial_data(serial, NULL);
88 static int sierra_calc_interface(struct usb_serial *serial)
91 struct usb_interface *p_interface;
92 struct usb_host_interface *p_host_interface;
93 dev_dbg(&serial->dev->dev, "%s", __func__);
95 /* Get the interface structure pointer from the serial struct */
96 p_interface = serial->interface;
98 /* Get a pointer to the host interface structure */
99 p_host_interface = p_interface->cur_altsetting;
101 /* read the interface descriptor for this active altsetting
102 * to find out the interface number we are on
104 interface = p_host_interface->desc.bInterfaceNumber;
109 static int sierra_probe(struct usb_serial *serial,
110 const struct usb_device_id *id)
113 struct usb_device *udev;
118 dev_dbg(&serial->dev->dev, "%s", __func__);
120 num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL);
124 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
125 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
128 /* Figure out the interface number from the serial structure */
129 ifnum = sierra_calc_interface(serial);
132 * If this interface supports more than 1 alternate
135 if (serial->interface->num_altsetting == 2) {
136 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
138 /* We know the alternate setting is 1 for the MC8785 */
139 usb_set_interface(udev, ifnum, 1);
142 /* Dummy interface present on some SKUs should be ignored */
145 else if (numendpoints <= 3)
148 *num_ports = (numendpoints-1)/2;
151 * save off our num_ports info so that we can use it in the
152 * calc_num_ports callback
154 usb_set_serial_data(serial, (void *)num_ports);
159 static struct usb_device_id id_table [] = {
160 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
161 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
162 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
163 { USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */
164 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
165 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
166 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
167 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
168 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
169 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
170 /* Sierra Wireless C597 */
171 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
172 /* Sierra Wireless Device */
173 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
174 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */
175 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */
176 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */
178 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
179 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
180 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
181 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
182 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */
183 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
184 { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
185 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
186 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
187 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
188 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
189 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
190 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
191 { USB_DEVICE(0x1199, 0x683C) }, /* Sierra Wireless MC8790 */
192 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8790 */
193 { USB_DEVICE(0x1199, 0x683E) }, /* Sierra Wireless MC8790 */
194 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
195 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
196 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
197 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
198 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
199 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
200 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
201 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
202 /* Sierra Wireless C885 */
203 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
204 /* Sierra Wireless Device */
205 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
206 /* Sierra Wireless Device */
207 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
208 /* Sierra Wireless Device */
209 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
211 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
212 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
216 MODULE_DEVICE_TABLE(usb, id_table);
218 static struct usb_driver sierra_driver = {
220 .probe = usb_serial_probe,
221 .disconnect = usb_serial_disconnect,
222 .id_table = id_table,
226 struct sierra_port_private {
227 spinlock_t lock; /* lock the structure */
228 int outstanding_urbs; /* number of out urbs in flight */
230 /* Input endpoints and buffers for this port */
231 struct urb *in_urbs[N_IN_URB];
232 char *in_buffer[N_IN_URB];
234 /* Settings for the port */
235 int rts_state; /* Handshaking pins (outputs) */
237 int cts_state; /* Handshaking pins (inputs) */
243 static int sierra_send_setup(struct usb_serial_port *port)
245 struct usb_serial *serial = port->serial;
246 struct sierra_port_private *portdata;
250 dev_dbg(&port->dev, "%s", __func__);
252 portdata = usb_get_serial_port_data(port);
254 if (portdata->dtr_state)
256 if (portdata->rts_state)
259 /* If composite device then properly report interface */
260 if (serial->num_ports == 1) {
261 interface = sierra_calc_interface(serial);
262 /* Control message is sent only to interfaces with
263 * interrupt_in endpoints
265 if (port->interrupt_in_urb) {
266 /* send control message */
267 return usb_control_msg(serial->dev,
268 usb_rcvctrlpipe(serial->dev, 0),
269 0x22, 0x21, val, interface,
270 NULL, 0, USB_CTRL_SET_TIMEOUT);
274 /* Otherwise the need to do non-composite mapping */
276 if (port->bulk_out_endpointAddress == 2)
278 else if (port->bulk_out_endpointAddress == 4)
280 else if (port->bulk_out_endpointAddress == 5)
282 return usb_control_msg(serial->dev,
283 usb_rcvctrlpipe(serial->dev, 0),
284 0x22, 0x21, val, interface,
285 NULL, 0, USB_CTRL_SET_TIMEOUT);
290 static void sierra_set_termios(struct tty_struct *tty,
291 struct usb_serial_port *port, struct ktermios *old_termios)
293 dev_dbg(&port->dev, "%s", __func__);
294 tty_termios_copy_hw(tty->termios, old_termios);
295 sierra_send_setup(port);
298 static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
300 struct usb_serial_port *port = tty->driver_data;
302 struct sierra_port_private *portdata;
304 dev_dbg(&port->dev, "%s", __func__);
305 portdata = usb_get_serial_port_data(port);
307 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
308 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
309 ((portdata->cts_state) ? TIOCM_CTS : 0) |
310 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
311 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
312 ((portdata->ri_state) ? TIOCM_RNG : 0);
317 static int sierra_tiocmset(struct tty_struct *tty, struct file *file,
318 unsigned int set, unsigned int clear)
320 struct usb_serial_port *port = tty->driver_data;
321 struct sierra_port_private *portdata;
323 portdata = usb_get_serial_port_data(port);
326 portdata->rts_state = 1;
328 portdata->dtr_state = 1;
330 if (clear & TIOCM_RTS)
331 portdata->rts_state = 0;
332 if (clear & TIOCM_DTR)
333 portdata->dtr_state = 0;
334 return sierra_send_setup(port);
337 static void sierra_outdat_callback(struct urb *urb)
339 struct usb_serial_port *port = urb->context;
340 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
341 int status = urb->status;
344 dev_dbg(&port->dev, "%s - port %d", __func__, port->number);
346 /* free up the transfer buffer, as usb_free_urb() does not do this */
347 kfree(urb->transfer_buffer);
350 dev_dbg(&port->dev, "%s - nonzero write bulk status "
351 "received: %d", __func__, status);
353 spin_lock_irqsave(&portdata->lock, flags);
354 --portdata->outstanding_urbs;
355 spin_unlock_irqrestore(&portdata->lock, flags);
357 usb_serial_port_softint(port);
361 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
362 const unsigned char *buf, int count)
364 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
365 struct usb_serial *serial = port->serial;
367 unsigned char *buffer;
371 portdata = usb_get_serial_port_data(port);
373 dev_dbg(&port->dev, "%s: write (%d chars)", __func__, count);
375 spin_lock_irqsave(&portdata->lock, flags);
376 if (portdata->outstanding_urbs > N_OUT_URB) {
377 spin_unlock_irqrestore(&portdata->lock, flags);
378 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
381 portdata->outstanding_urbs++;
382 spin_unlock_irqrestore(&portdata->lock, flags);
384 buffer = kmalloc(count, GFP_ATOMIC);
386 dev_err(&port->dev, "out of memory\n");
388 goto error_no_buffer;
391 urb = usb_alloc_urb(0, GFP_ATOMIC);
393 dev_err(&port->dev, "no more free urbs\n");
398 memcpy(buffer, buf, count);
400 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
402 usb_fill_bulk_urb(urb, serial->dev,
403 usb_sndbulkpipe(serial->dev,
404 port->bulk_out_endpointAddress),
405 buffer, count, sierra_outdat_callback, port);
407 /* send it down the pipe */
408 status = usb_submit_urb(urb, GFP_ATOMIC);
410 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
411 "with status = %d\n", __func__, status);
416 /* we are done with this urb, so let the host driver
417 * really free it when it is finished with it */
426 spin_lock_irqsave(&portdata->lock, flags);
427 --portdata->outstanding_urbs;
428 spin_unlock_irqrestore(&portdata->lock, flags);
432 static void sierra_indat_callback(struct urb *urb)
436 struct usb_serial_port *port;
437 struct tty_struct *tty;
438 unsigned char *data = urb->transfer_buffer;
439 int status = urb->status;
441 dbg("%s: %p", __func__, urb);
443 endpoint = usb_pipeendpoint(urb->pipe);
447 dev_dbg(&port->dev, "%s: nonzero status: %d on"
448 " endpoint %02x.", __func__, status, endpoint);
450 if (urb->actual_length) {
451 tty = tty_port_tty_get(&port->port);
452 tty_buffer_request_room(tty, urb->actual_length);
453 tty_insert_flip_string(tty, data, urb->actual_length);
454 tty_flip_buffer_push(tty);
457 dev_dbg(&port->dev, "%s: empty read urb"
458 " received", __func__);
460 /* Resubmit urb so we continue receiving */
461 if (port->port.count && status != -ESHUTDOWN) {
462 err = usb_submit_urb(urb, GFP_ATOMIC);
464 dev_err(&port->dev, "resubmit read urb failed."
471 static void sierra_instat_callback(struct urb *urb)
474 int status = urb->status;
475 struct usb_serial_port *port = urb->context;
476 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
477 struct usb_serial *serial = port->serial;
479 dev_dbg(&port->dev, "%s", __func__);
480 dev_dbg(&port->dev, "%s: urb %p port %p has data %p", __func__,
481 urb, port, portdata);
484 struct usb_ctrlrequest *req_pkt =
485 (struct usb_ctrlrequest *)urb->transfer_buffer;
488 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
492 if ((req_pkt->bRequestType == 0xA1) &&
493 (req_pkt->bRequest == 0x20)) {
495 unsigned char signals = *((unsigned char *)
496 urb->transfer_buffer +
497 sizeof(struct usb_ctrlrequest));
498 struct tty_struct *tty;
500 dev_dbg(&port->dev, "%s: signal x%x", __func__,
503 old_dcd_state = portdata->dcd_state;
504 portdata->cts_state = 1;
505 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
506 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
507 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
509 tty = tty_port_tty_get(&port->port);
510 if (tty && !C_CLOCAL(tty) &&
511 old_dcd_state && !portdata->dcd_state)
515 dev_dbg(&port->dev, "%s: type %x req %x",
516 __func__, req_pkt->bRequestType,
520 dev_dbg(&port->dev, "%s: error %d", __func__, status);
522 /* Resubmit urb so we continue receiving IRQ data */
523 if (status != -ESHUTDOWN) {
524 urb->dev = serial->dev;
525 err = usb_submit_urb(urb, GFP_ATOMIC);
527 dev_dbg(&port->dev, "%s: resubmit intr urb "
528 "failed. (%d)", __func__, err);
532 static int sierra_write_room(struct tty_struct *tty)
534 struct usb_serial_port *port = tty->driver_data;
535 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
538 dev_dbg(&port->dev, "%s - port %d", __func__, port->number);
540 /* try to give a good number back based on if we have any free urbs at
541 * this point in time */
542 spin_lock_irqsave(&portdata->lock, flags);
543 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
544 spin_unlock_irqrestore(&portdata->lock, flags);
545 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
548 spin_unlock_irqrestore(&portdata->lock, flags);
553 static int sierra_open(struct tty_struct *tty,
554 struct usb_serial_port *port, struct file *filp)
556 struct sierra_port_private *portdata;
557 struct usb_serial *serial = port->serial;
562 portdata = usb_get_serial_port_data(port);
564 dev_dbg(&port->dev, "%s", __func__);
566 /* Set some sane defaults */
567 portdata->rts_state = 1;
568 portdata->dtr_state = 1;
570 /* Reset low level data toggle and start reading from endpoints */
571 for (i = 0; i < N_IN_URB; i++) {
572 urb = portdata->in_urbs[i];
575 if (urb->dev != serial->dev) {
576 dev_dbg(&port->dev, "%s: dev %p != %p",
577 __func__, urb->dev, serial->dev);
582 * make sure endpoint data toggle is synchronized with the
585 usb_clear_halt(urb->dev, urb->pipe);
587 result = usb_submit_urb(urb, GFP_KERNEL);
589 dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
590 i, result, urb->transfer_buffer_length);
594 sierra_send_setup(port);
596 /* start up the interrupt endpoint if we have one */
597 if (port->interrupt_in_urb) {
598 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
600 dev_err(&port->dev, "submit irq_in urb failed %d\n",
606 static void sierra_dtr_rts(struct usb_serial_port *port, int on)
608 struct usb_serial *serial = port->serial;
609 struct sierra_port_private *portdata;
611 portdata = usb_get_serial_port_data(port);
612 portdata->rts_state = on;
613 portdata->dtr_state = on;
616 mutex_lock(&serial->disc_mutex);
617 if (!serial->disconnected)
618 sierra_send_setup(port);
619 mutex_unlock(&serial->disc_mutex);
623 static void sierra_close(struct usb_serial_port *port)
626 struct usb_serial *serial = port->serial;
627 struct sierra_port_private *portdata;
629 dev_dbg(&port->dev, "%s", __func__);
630 portdata = usb_get_serial_port_data(port);
633 /* Stop reading/writing urbs */
634 for (i = 0; i < N_IN_URB; i++)
635 usb_kill_urb(portdata->in_urbs[i]);
637 usb_kill_urb(port->interrupt_in_urb);
640 static int sierra_startup(struct usb_serial *serial)
642 struct usb_serial_port *port;
643 struct sierra_port_private *portdata;
648 dev_dbg(&serial->dev->dev, "%s", __func__);
650 /* Set Device mode to D0 */
651 sierra_set_power_state(serial->dev, 0x0000);
653 /* Check NMEA and set */
655 sierra_vsc_set_nmea(serial->dev, 1);
657 /* Now setup per port private data */
658 for (i = 0; i < serial->num_ports; i++) {
659 port = serial->port[i];
660 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
662 dev_dbg(&port->dev, "%s: kmalloc for "
663 "sierra_port_private (%d) failed!.",
667 spin_lock_init(&portdata->lock);
668 for (j = 0; j < N_IN_URB; j++) {
669 portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
670 if (!portdata->in_buffer[j]) {
671 for (--j; j >= 0; j--)
672 kfree(portdata->in_buffer[j]);
678 usb_set_serial_port_data(port, portdata);
680 /* initialize the in urbs */
681 for (j = 0; j < N_IN_URB; ++j) {
682 urb = usb_alloc_urb(0, GFP_KERNEL);
684 dev_dbg(&port->dev, "%s: alloc for in "
685 "port failed.", __func__);
688 /* Fill URB using supplied data. */
689 usb_fill_bulk_urb(urb, serial->dev,
690 usb_rcvbulkpipe(serial->dev,
691 port->bulk_in_endpointAddress),
692 portdata->in_buffer[j], IN_BUFLEN,
693 sierra_indat_callback, port);
694 portdata->in_urbs[j] = urb;
701 static void sierra_shutdown(struct usb_serial *serial)
704 struct usb_serial_port *port;
705 struct sierra_port_private *portdata;
707 dev_dbg(&serial->dev->dev, "%s", __func__);
709 for (i = 0; i < serial->num_ports; ++i) {
710 port = serial->port[i];
713 portdata = usb_get_serial_port_data(port);
717 for (j = 0; j < N_IN_URB; j++) {
718 usb_kill_urb(portdata->in_urbs[j]);
719 usb_free_urb(portdata->in_urbs[j]);
720 kfree(portdata->in_buffer[j]);
723 usb_set_serial_port_data(port, NULL);
727 static struct usb_serial_driver sierra_device = {
729 .owner = THIS_MODULE,
732 .description = "Sierra USB modem",
733 .id_table = id_table,
734 .usb_driver = &sierra_driver,
735 .calc_num_ports = sierra_calc_num_ports,
736 .probe = sierra_probe,
738 .close = sierra_close,
739 .dtr_rts = sierra_dtr_rts,
740 .write = sierra_write,
741 .write_room = sierra_write_room,
742 .set_termios = sierra_set_termios,
743 .tiocmget = sierra_tiocmget,
744 .tiocmset = sierra_tiocmset,
745 .attach = sierra_startup,
746 .shutdown = sierra_shutdown,
747 .read_int_callback = sierra_instat_callback,
750 /* Functions used by new usb-serial code. */
751 static int __init sierra_init(void)
754 retval = usb_serial_register(&sierra_device);
756 goto failed_device_register;
759 retval = usb_register(&sierra_driver);
761 goto failed_driver_register;
763 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
768 failed_driver_register:
769 usb_serial_deregister(&sierra_device);
770 failed_device_register:
774 static void __exit sierra_exit(void)
776 usb_deregister(&sierra_driver);
777 usb_serial_deregister(&sierra_device);
780 module_init(sierra_init);
781 module_exit(sierra_exit);
783 MODULE_AUTHOR(DRIVER_AUTHOR);
784 MODULE_DESCRIPTION(DRIVER_DESC);
785 MODULE_VERSION(DRIVER_VERSION);
786 MODULE_LICENSE("GPL");
788 module_param(nmea, bool, S_IRUGO | S_IWUSR);
789 MODULE_PARM_DESC(nmea, "NMEA streaming");
791 module_param(debug, bool, S_IRUGO | S_IWUSR);
792 MODULE_PARM_DESC(debug, "Debug messages");