drivers/usb/serial/sierra.c

   1 /*
   2   USB Driver for Sierra Wireless
   3
   4   Copyright (C) 2006, 2007  Kevin Lloyd <linux@sierrawireless.com>
   5
   6   IMPORTANT DISCLAIMER: This driver is not commercially supported by
   7   Sierra Wireless. Use at your own risk.
   8
   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.
  12
  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>
  15 */
  16
  17 #define DRIVER_VERSION "v.1.2.4b"
  18 #define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
  19 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
  20
  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
  30 #define SWIMS_USB_REQUEST_SetMode       0x0B
  31 #define SWIMS_USB_REQUEST_TYPE_SetMode  0x40
  32 #define SWIMS_USB_INDEX_SetMode         0x0000
  33 #define SWIMS_SET_MODE_Modem            0x0001
  34
  35 /* per port private data */
  36 #define N_IN_URB        4
  37 #define N_OUT_URB       4
  38 #define IN_BUFLEN       4096
  39
  40 static int debug;
  41
  42 enum devicetype {
  43         DEVICE_3_PORT =         0,
  44         DEVICE_1_PORT =         1,
  45         DEVICE_INSTALLER =      2,
  46 };
  47
  48 int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
  49 {
  50         int result;
  51         dev_dbg(&udev->dev, "%s", "SET POWER STATE");
  52         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  53                         0x00,                   /* __u8 request      */
  54                         0x40,                   /* __u8 request type */
  55                         swiState,               /* __u16 value       */
  56                         0,                      /* __u16 index       */
  57                         NULL,                   /* void *data        */
  58                         0,                      /* __u16 size        */
  59                         USB_CTRL_SET_TIMEOUT);  /* int timeout       */
  60         return result;
  61 }
  62
  63 int sierra_set_ms_mode(struct usb_device *udev, __u16 eSocMode)
  64 {
  65         int result;
  66         dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH");
  67         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  68                         SWIMS_USB_REQUEST_SetMode,      /* __u8 request      */
  69                         SWIMS_USB_REQUEST_TYPE_SetMode, /* __u8 request type */
  70                         eSocMode,                       /* __u16 value       */
  71                         SWIMS_USB_INDEX_SetMode,        /* __u16 index       */
  72                         NULL,                           /* void *data        */
  73                         0,                              /* __u16 size        */
  74                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  75         return result;
  76 }
  77
  78 int sierra_probe(struct usb_interface *iface, const struct usb_device_id *id)
  79 {
  80         int result;
  81         struct usb_device *udev;
  82
  83         udev = usb_get_dev(interface_to_usbdev(iface));
  84
  85         /* Check if in installer mode */
  86         if (id->driver_info == DEVICE_INSTALLER) {
  87                 dev_dbg(&udev->dev, "%s", "FOUND DEVICE(SW)\n");
  88                 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
  89                 /*We do not want to bind to the device when in installer mode*/
  90                 return -EIO;
  91         }
  92
  93         return usb_serial_probe(iface, id);
  94 }
  95
  96 static struct usb_device_id id_table [] = {
  97         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
  98         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
  99         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 100         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 101         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 102         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless AirCard 595U */
 103         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 104         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 105         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 106         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 107         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
 108         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 109
 110         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 111         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 112
 113         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 114         { }
 115 };
 116 MODULE_DEVICE_TABLE(usb, id_table);
 117
 118 static struct usb_device_id id_table_1port [] = {
 119         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
 120         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
 121         { }
 122 };
 123
 124 static struct usb_device_id id_table_3port [] = {
 125         /* CDMA Devices */
 126         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
 127         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 128         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 129         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 130         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 131         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless AirCard 595U */
 132         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 133
 134         /* GSM/UMTS Devices */
 135         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 136         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 137         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 138         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
 139         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 140         { }
 141 };
 142
 143 static struct usb_driver sierra_driver = {
 144         .name       = "sierra",
 145         .probe      = sierra_probe,
 146         .disconnect = usb_serial_disconnect,
 147         .id_table   = id_table,
 148         .no_dynamic_id =        1,
 149 };
 150
 151
 152 struct sierra_port_private {
 153         spinlock_t lock;        /* lock the structure */
 154         int outstanding_urbs;   /* number of out urbs in flight */
 155
 156         /* Input endpoints and buffer for this port */
 157         struct urb *in_urbs[N_IN_URB];
 158         char in_buffer[N_IN_URB][IN_BUFLEN];
 159
 160         /* Settings for the port */
 161         int rts_state;  /* Handshaking pins (outputs) */
 162         int dtr_state;
 163         int cts_state;  /* Handshaking pins (inputs) */
 164         int dsr_state;
 165         int dcd_state;
 166         int ri_state;
 167 };
 168
 169 static int sierra_send_setup(struct usb_serial_port *port)
 170 {
 171         struct usb_serial *serial = port->serial;
 172         struct sierra_port_private *portdata;
 173
 174         dbg("%s", __FUNCTION__);
 175
 176         portdata = usb_get_serial_port_data(port);
 177
 178         if (port->tty) {
 179                 int val = 0;
 180                 if (portdata->dtr_state)
 181                         val |= 0x01;
 182                 if (portdata->rts_state)
 183                         val |= 0x02;
 184
 185                 return usb_control_msg(serial->dev,
 186                                 usb_rcvctrlpipe(serial->dev, 0),
 187                                 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
 188         }
 189
 190         return 0;
 191 }
 192
 193 static void sierra_rx_throttle(struct usb_serial_port *port)
 194 {
 195         dbg("%s", __FUNCTION__);
 196 }
 197
 198 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 199 {
 200         dbg("%s", __FUNCTION__);
 201 }
 202
 203 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 204 {
 205         /* Unfortunately, I don't know how to send a break */
 206         dbg("%s", __FUNCTION__);
 207 }
 208
 209 static void sierra_set_termios(struct usb_serial_port *port,
 210                         struct ktermios *old_termios)
 211 {
 212         dbg("%s", __FUNCTION__);
 213
 214         sierra_send_setup(port);
 215 }
 216
 217 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 218 {
 219         unsigned int value;
 220         struct sierra_port_private *portdata;
 221
 222         portdata = usb_get_serial_port_data(port);
 223
 224         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 225                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 226                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 227                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 228                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 229                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 230
 231         return value;
 232 }
 233
 234 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 235                         unsigned int set, unsigned int clear)
 236 {
 237         struct sierra_port_private *portdata;
 238
 239         portdata = usb_get_serial_port_data(port);
 240
 241         if (set & TIOCM_RTS)
 242                 portdata->rts_state = 1;
 243         if (set & TIOCM_DTR)
 244                 portdata->dtr_state = 1;
 245
 246         if (clear & TIOCM_RTS)
 247                 portdata->rts_state = 0;
 248         if (clear & TIOCM_DTR)
 249                 portdata->dtr_state = 0;
 250         return sierra_send_setup(port);
 251 }
 252
 253 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 254                         unsigned int cmd, unsigned long arg)
 255 {
 256         return -ENOIOCTLCMD;
 257 }
 258
 259 static void sierra_outdat_callback(struct urb *urb)
 260 {
 261         struct usb_serial_port *port = urb->context;
 262         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 263         int status = urb->status;
 264         unsigned long flags;
 265
 266         dbg("%s - port %d", __FUNCTION__, port->number);
 267
 268         /* free up the transfer buffer, as usb_free_urb() does not do this */
 269         kfree(urb->transfer_buffer);
 270
 271         if (status)
 272                 dbg("%s - nonzero write bulk status received: %d",
 273                     __FUNCTION__, status);
 274
 275         spin_lock_irqsave(&portdata->lock, flags);
 276         --portdata->outstanding_urbs;
 277         spin_unlock_irqrestore(&portdata->lock, flags);
 278
 279         usb_serial_port_softint(port);
 280 }
 281
 282 /* Write */
 283 static int sierra_write(struct usb_serial_port *port,
 284                         const unsigned char *buf, int count)
 285 {
 286         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 287         struct usb_serial *serial = port->serial;
 288         unsigned long flags;
 289         unsigned char *buffer;
 290         struct urb *urb;
 291         int status;
 292
 293         portdata = usb_get_serial_port_data(port);
 294
 295         dbg("%s: write (%d chars)", __FUNCTION__, count);
 296
 297         spin_lock_irqsave(&portdata->lock, flags);
 298         if (portdata->outstanding_urbs > N_OUT_URB) {
 299                 spin_unlock_irqrestore(&portdata->lock, flags);
 300                 dbg("%s - write limit hit\n", __FUNCTION__);
 301                 return 0;
 302         }
 303         portdata->outstanding_urbs++;
 304         spin_unlock_irqrestore(&portdata->lock, flags);
 305
 306         buffer = kmalloc(count, GFP_ATOMIC);
 307         if (!buffer) {
 308                 dev_err(&port->dev, "out of memory\n");
 309                 count = -ENOMEM;
 310                 goto error_no_buffer;
 311         }
 312
 313         urb = usb_alloc_urb(0, GFP_ATOMIC);
 314         if (!urb) {
 315                 dev_err(&port->dev, "no more free urbs\n");
 316                 count = -ENOMEM;
 317                 goto error_no_urb;
 318         }
 319
 320         memcpy(buffer, buf, count);
 321
 322         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 323
 324         usb_fill_bulk_urb(urb, serial->dev,
 325                           usb_sndbulkpipe(serial->dev,
 326                                           port->bulk_out_endpointAddress),
 327                           buffer, count, sierra_outdat_callback, port);
 328
 329         /* send it down the pipe */
 330         status = usb_submit_urb(urb, GFP_ATOMIC);
 331         if (status) {
 332                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 333                         "with status = %d\n", __FUNCTION__, status);
 334                 count = status;
 335                 goto error;
 336         }
 337
 338         /* we are done with this urb, so let the host driver
 339          * really free it when it is finished with it */
 340         usb_free_urb(urb);
 341
 342         return count;
 343 error:
 344         usb_free_urb(urb);
 345 error_no_urb:
 346         kfree(buffer);
 347 error_no_buffer:
 348         spin_lock_irqsave(&portdata->lock, flags);
 349         --portdata->outstanding_urbs;
 350         spin_unlock_irqrestore(&portdata->lock, flags);
 351         return count;
 352 }
 353
 354 static void sierra_indat_callback(struct urb *urb)
 355 {
 356         int err;
 357         int endpoint;
 358         struct usb_serial_port *port;
 359         struct tty_struct *tty;
 360         unsigned char *data = urb->transfer_buffer;
 361         int status = urb->status;
 362
 363         dbg("%s: %p", __FUNCTION__, urb);
 364
 365         endpoint = usb_pipeendpoint(urb->pipe);
 366         port = (struct usb_serial_port *) urb->context;
 367
 368         if (status) {
 369                 dbg("%s: nonzero status: %d on endpoint %02x.",
 370                     __FUNCTION__, status, endpoint);
 371         } else {
 372                 tty = port->tty;
 373                 if (urb->actual_length) {
 374                         tty_buffer_request_room(tty, urb->actual_length);
 375                         tty_insert_flip_string(tty, data, urb->actual_length);
 376                         tty_flip_buffer_push(tty);
 377                 } else {
 378                         dbg("%s: empty read urb received", __FUNCTION__);
 379                 }
 380
 381                 /* Resubmit urb so we continue receiving */
 382                 if (port->open_count && status != -ESHUTDOWN) {
 383                         err = usb_submit_urb(urb, GFP_ATOMIC);
 384                         if (err)
 385                                 dev_err(&port->dev, "resubmit read urb failed."
 386                                         "(%d)", err);
 387                 }
 388         }
 389         return;
 390 }
 391
 392 static void sierra_instat_callback(struct urb *urb)
 393 {
 394         int err;
 395         int status = urb->status;
 396         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 397         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 398         struct usb_serial *serial = port->serial;
 399
 400         dbg("%s", __FUNCTION__);
 401         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 402
 403         if (status == 0) {
 404                 struct usb_ctrlrequest *req_pkt =
 405                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 406
 407                 if (!req_pkt) {
 408                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 409                         return;
 410                 }
 411                 if ((req_pkt->bRequestType == 0xA1) &&
 412                                 (req_pkt->bRequest == 0x20)) {
 413                         int old_dcd_state;
 414                         unsigned char signals = *((unsigned char *)
 415                                         urb->transfer_buffer +
 416                                         sizeof(struct usb_ctrlrequest));
 417
 418                         dbg("%s: signal x%x", __FUNCTION__, signals);
 419
 420                         old_dcd_state = portdata->dcd_state;
 421                         portdata->cts_state = 1;
 422                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 423                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 424                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 425
 426                         if (port->tty && !C_CLOCAL(port->tty) &&
 427                                         old_dcd_state && !portdata->dcd_state)
 428                                 tty_hangup(port->tty);
 429                 } else {
 430                         dbg("%s: type %x req %x", __FUNCTION__,
 431                                 req_pkt->bRequestType,req_pkt->bRequest);
 432                 }
 433         } else
 434                 dbg("%s: error %d", __FUNCTION__, status);
 435
 436         /* Resubmit urb so we continue receiving IRQ data */
 437         if (status != -ESHUTDOWN) {
 438                 urb->dev = serial->dev;
 439                 err = usb_submit_urb(urb, GFP_ATOMIC);
 440                 if (err)
 441                         dbg("%s: resubmit intr urb failed. (%d)",
 442                                 __FUNCTION__, err);
 443         }
 444 }
 445
 446 static int sierra_write_room(struct usb_serial_port *port)
 447 {
 448         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 449         unsigned long flags;
 450
 451         dbg("%s - port %d", __FUNCTION__, port->number);
 452
 453         /* try to give a good number back based on if we have any free urbs at
 454          * this point in time */
 455         spin_lock_irqsave(&portdata->lock, flags);
 456         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 457                 spin_unlock_irqrestore(&portdata->lock, flags);
 458                 dbg("%s - write limit hit\n", __FUNCTION__);
 459                 return 0;
 460         }
 461         spin_unlock_irqrestore(&portdata->lock, flags);
 462
 463         return 2048;
 464 }
 465
 466 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 467 {
 468         dbg("%s - port %d", __FUNCTION__, port->number);
 469
 470         /*
 471          * We can't really account for how much data we
 472          * have sent out, but hasn't made it through to the
 473          * device as we can't see the backend here, so just
 474          * tell the tty layer that everything is flushed.
 475          */
 476         return 0;
 477 }
 478
 479 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 480 {
 481         struct sierra_port_private *portdata;
 482         struct usb_serial *serial = port->serial;
 483         int i;
 484         struct urb *urb;
 485         int result;
 486
 487         portdata = usb_get_serial_port_data(port);
 488
 489         dbg("%s", __FUNCTION__);
 490
 491         /* Set some sane defaults */
 492         portdata->rts_state = 1;
 493         portdata->dtr_state = 1;
 494
 495         /* Reset low level data toggle and start reading from endpoints */
 496         for (i = 0; i < N_IN_URB; i++) {
 497                 urb = portdata->in_urbs[i];
 498                 if (!urb)
 499                         continue;
 500                 if (urb->dev != serial->dev) {
 501                         dbg("%s: dev %p != %p", __FUNCTION__,
 502                                 urb->dev, serial->dev);
 503                         continue;
 504                 }
 505
 506                 /*
 507                  * make sure endpoint data toggle is synchronized with the
 508                  * device
 509                  */
 510                 usb_clear_halt(urb->dev, urb->pipe);
 511
 512                 result = usb_submit_urb(urb, GFP_KERNEL);
 513                 if (result) {
 514                         dev_err(&port->dev, "submit urb %d failed (%d) %d",
 515                                 i, result, urb->transfer_buffer_length);
 516                 }
 517         }
 518
 519         port->tty->low_latency = 1;
 520
 521         sierra_send_setup(port);
 522
 523         /* start up the interrupt endpoint if we have one */
 524         if (port->interrupt_in_urb) {
 525                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 526                 if (result)
 527                         dev_err(&port->dev, "submit irq_in urb failed %d",
 528                                 result);
 529         }
 530         return 0;
 531 }
 532
 533 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 534 {
 535         int i;
 536         struct usb_serial *serial = port->serial;
 537         struct sierra_port_private *portdata;
 538
 539         dbg("%s", __FUNCTION__);
 540         portdata = usb_get_serial_port_data(port);
 541
 542         portdata->rts_state = 0;
 543         portdata->dtr_state = 0;
 544
 545         if (serial->dev) {
 546                 sierra_send_setup(port);
 547
 548                 /* Stop reading/writing urbs */
 549                 for (i = 0; i < N_IN_URB; i++)
 550                         usb_kill_urb(portdata->in_urbs[i]);
 551         }
 552
 553         usb_kill_urb(port->interrupt_in_urb);
 554
 555         port->tty = NULL;
 556 }
 557
 558 static int sierra_startup(struct usb_serial *serial)
 559 {
 560         struct usb_serial_port *port;
 561         struct sierra_port_private *portdata;
 562         struct urb *urb;
 563         int i;
 564         int j;
 565
 566         dbg("%s", __FUNCTION__);
 567
 568         /*Set Device mode to D0 */
 569         sierra_set_power_state(serial->dev, 0x0000);
 570
 571         /* Now setup per port private data */
 572         for (i = 0; i < serial->num_ports; i++) {
 573                 port = serial->port[i];
 574                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 575                 if (!portdata) {
 576                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 577                                         __FUNCTION__, i);
 578                         return -ENOMEM;
 579                 }
 580                 spin_lock_init(&portdata->lock);
 581
 582                 usb_set_serial_port_data(port, portdata);
 583
 584                 /* initialize the in urbs */
 585                 for (j = 0; j < N_IN_URB; ++j) {
 586                         urb = usb_alloc_urb(0, GFP_KERNEL);
 587                         if (urb == NULL) {
 588                                 dbg("%s: alloc for in port failed.",
 589                                     __FUNCTION__);
 590                                 continue;
 591                         }
 592                         /* Fill URB using supplied data. */
 593                         usb_fill_bulk_urb(urb, serial->dev,
 594                                           usb_rcvbulkpipe(serial->dev,
 595                                                 port->bulk_in_endpointAddress),
 596                                           portdata->in_buffer[j], IN_BUFLEN,
 597                                           sierra_indat_callback, port);
 598                         portdata->in_urbs[j] = urb;
 599                 }
 600         }
 601
 602         return 0;
 603 }
 604
 605 static void sierra_shutdown(struct usb_serial *serial)
 606 {
 607         int i, j;
 608         struct usb_serial_port *port;
 609         struct sierra_port_private *portdata;
 610
 611         dbg("%s", __FUNCTION__);
 612
 613         for (i = 0; i < serial->num_ports; ++i) {
 614                 port = serial->port[i];
 615                 if (!port)
 616                         continue;
 617                 portdata = usb_get_serial_port_data(port);
 618                 if (!portdata)
 619                         continue;
 620
 621                 for (j = 0; j < N_IN_URB; j++) {
 622                         usb_kill_urb(portdata->in_urbs[j]);
 623                         usb_free_urb(portdata->in_urbs[j]);
 624                         portdata->in_urbs[j] = NULL;
 625                 }
 626                 kfree(portdata);
 627                 usb_set_serial_port_data(port, NULL);
 628         }
 629 }
 630
 631 static struct usb_serial_driver sierra_1port_device = {
 632         .driver = {
 633                 .owner =        THIS_MODULE,
 634                 .name =         "sierra1",
 635         },
 636         .description       = "Sierra USB modem (1 port)",
 637         .id_table          = id_table_1port,
 638         .usb_driver        = &sierra_driver,
 639         .num_interrupt_in  = NUM_DONT_CARE,
 640         .num_bulk_in       = 1,
 641         .num_bulk_out      = 1,
 642         .num_ports         = 1,
 643         .open              = sierra_open,
 644         .close             = sierra_close,
 645         .write             = sierra_write,
 646         .write_room        = sierra_write_room,
 647         .chars_in_buffer   = sierra_chars_in_buffer,
 648         .throttle          = sierra_rx_throttle,
 649         .unthrottle        = sierra_rx_unthrottle,
 650         .ioctl             = sierra_ioctl,
 651         .set_termios       = sierra_set_termios,
 652         .break_ctl         = sierra_break_ctl,
 653         .tiocmget          = sierra_tiocmget,
 654         .tiocmset          = sierra_tiocmset,
 655         .attach            = sierra_startup,
 656         .shutdown          = sierra_shutdown,
 657         .read_int_callback = sierra_instat_callback,
 658 };
 659
 660 static struct usb_serial_driver sierra_3port_device = {
 661         .driver = {
 662                 .owner =        THIS_MODULE,
 663                 .name =         "sierra3",
 664         },
 665         .description       = "Sierra USB modem (3 port)",
 666         .id_table          = id_table_3port,
 667         .usb_driver        = &sierra_driver,
 668         .num_interrupt_in  = NUM_DONT_CARE,
 669         .num_bulk_in       = 3,
 670         .num_bulk_out      = 3,
 671         .num_ports         = 3,
 672         .open              = sierra_open,
 673         .close             = sierra_close,
 674         .write             = sierra_write,
 675         .write_room        = sierra_write_room,
 676         .chars_in_buffer   = sierra_chars_in_buffer,
 677         .throttle          = sierra_rx_throttle,
 678         .unthrottle        = sierra_rx_unthrottle,
 679         .ioctl             = sierra_ioctl,
 680         .set_termios       = sierra_set_termios,
 681         .break_ctl         = sierra_break_ctl,
 682         .tiocmget          = sierra_tiocmget,
 683         .tiocmset          = sierra_tiocmset,
 684         .attach            = sierra_startup,
 685         .shutdown          = sierra_shutdown,
 686         .read_int_callback = sierra_instat_callback,
 687 };
 688
 689 /* Functions used by new usb-serial code. */
 690 static int __init sierra_init(void)
 691 {
 692         int retval;
 693         retval = usb_serial_register(&sierra_1port_device);
 694         if (retval)
 695                 goto failed_1port_device_register;
 696         retval = usb_serial_register(&sierra_3port_device);
 697         if (retval)
 698                 goto failed_3port_device_register;
 699
 700
 701         retval = usb_register(&sierra_driver);
 702         if (retval)
 703                 goto failed_driver_register;
 704
 705         info(DRIVER_DESC ": " DRIVER_VERSION);
 706
 707         return 0;
 708
 709 failed_driver_register:
 710         usb_serial_deregister(&sierra_3port_device);
 711 failed_3port_device_register:
 712         usb_serial_deregister(&sierra_1port_device);
 713 failed_1port_device_register:
 714         return retval;
 715 }
 716
 717 static void __exit sierra_exit(void)
 718 {
 719         usb_deregister (&sierra_driver);
 720         usb_serial_deregister(&sierra_1port_device);
 721         usb_serial_deregister(&sierra_3port_device);
 722 }
 723
 724 module_init(sierra_init);
 725 module_exit(sierra_exit);
 726
 727 MODULE_AUTHOR(DRIVER_AUTHOR);
 728 MODULE_DESCRIPTION(DRIVER_DESC);
 729 MODULE_VERSION(DRIVER_VERSION);
 730 MODULE_LICENSE("GPL");
 731
 732 #ifdef CONFIG_USB_DEBUG
 733 module_param(debug, bool, S_IRUGO | S_IWUSR);
 734 MODULE_PARM_DESC(debug, "Debug messages");
 735 #endif
 736