drivers/usb/serial/visor.c

   1 /*
   2  * USB HandSpring Visor, Palm m50x, and Sony Clie driver
   3  * (supports all of the Palm OS USB devices)
   4  *
   5  *      Copyright (C) 1999 - 2004
   6  *          Greg Kroah-Hartman (greg@kroah.com)
   7  *
   8  *      This program is free software; you can redistribute it and/or modify
   9  *      it under the terms of the GNU General Public License as published by
  10  *      the Free Software Foundation; either version 2 of the License, or
  11  *      (at your option) any later version.
  12  *
  13  * See Documentation/usb/usb-serial.txt for more information on using this driver
  14  *
  15  * (06/03/2003) Judd Montgomery <judd at jpilot.org>
  16  *     Added support for module parameter options for untested/unknown
  17  *     devices.
  18  *
  19  * (03/09/2003) gkh
  20  *      Added support for the Sony Clie NZ90V device.  Thanks to Martin Brachtl
  21  *      <brachtl@redgrep.cz> for the information.
  22  *
  23  * (03/05/2003) gkh
  24  *      Think Treo support is now working.
  25  *
  26  * (04/03/2002) gkh
  27  *      Added support for the Sony OS 4.1 devices.  Thanks to Hiroyuki ARAKI
  28  *      <hiro@zob.ne.jp> for the information.
  29  *
  30  * (03/27/2002) gkh
  31  *      Removed assumptions that port->tty was always valid (is not true
  32  *      for usb serial console devices.)
  33  *
  34  * (03/23/2002) gkh
  35  *      Added support for the Palm i705 device, thanks to Thomas Riemer
  36  *      <tom@netmech.com> for the information.
  37  *
  38  * (03/21/2002) gkh
  39  *      Added support for the Palm m130 device, thanks to Udo Eisenbarth
  40  *      <udo.eisenbarth@web.de> for the information.
  41  *
  42  * (02/27/2002) gkh
  43  *      Reworked the urb handling logic.  We have no more pool, but dynamically
  44  *      allocate the urb and the transfer buffer on the fly.  In testing this
  45  *      does not incure any measurable overhead.  This also relies on the fact
  46  *      that we have proper reference counting logic for urbs.
  47  *
  48  * (02/21/2002) SilaS
  49  *  Added initial support for the Palm m515 devices.
  50  *
  51  * (02/14/2002) gkh
  52  *      Added support for the Clie S-360 device.
  53  *
  54  * (12/18/2001) gkh
  55  *      Added better Clie support for 3.5 devices.  Thanks to Geoffrey Levand
  56  *      for the patch.
  57  *
  58  * (11/11/2001) gkh
  59  *      Added support for the m125 devices, and added check to prevent oopses
  60  *      for Clié devices that lie about the number of ports they have.
  61  *
  62  * (08/30/2001) gkh
  63  *      Added support for the Clie devices, both the 3.5 and 4.0 os versions.
  64  *      Many thanks to Daniel Burke, and Bryan Payne for helping with this.
  65  *
  66  * (08/23/2001) gkh
  67  *      fixed a few potential bugs pointed out by Oliver Neukum.
  68  *
  69  * (05/30/2001) gkh
  70  *      switched from using spinlock to a semaphore, which fixes lots of problems.
  71  *
  72  * (05/28/2000) gkh
  73  *      Added initial support for the Palm m500 and Palm m505 devices.
  74  *
  75  * (04/08/2001) gb
  76  *      Identify version on module load.
  77  *
  78  * (01/21/2000) gkh
  79  *      Added write_room and chars_in_buffer, as they were previously using the
  80  *      generic driver versions which is all wrong now that we are using an urb
  81  *      pool.  Thanks to Wolfgang Grandegger for pointing this out to me.
  82  *      Removed count assignment in the write function, which was not needed anymore
  83  *      either.  Thanks to Al Borchers for pointing this out.
  84  *
  85  * (12/12/2000) gkh
  86  *      Moved MOD_DEC to end of visor_close to be nicer, as the final write
  87  *      message can sleep.
  88  *
  89  * (11/12/2000) gkh
  90  *      Fixed bug with data being dropped on the floor by forcing tty->low_latency
  91  *      to be on.  Hopefully this fixes the OHCI issue!
  92  *
  93  * (11/01/2000) Adam J. Richter
  94  *      usb_device_id table support
  95  *
  96  * (10/05/2000) gkh
  97  *      Fixed bug with urb->dev not being set properly, now that the usb
  98  *      core needs it.
  99  *
 100  * (09/11/2000) gkh
 101  *      Got rid of always calling kmalloc for every urb we wrote out to the
 102  *      device.
 103  *      Added visor_read_callback so we can keep track of bytes in and out for
 104  *      those people who like to know the speed of their device.
 105  *      Removed DEBUG #ifdefs with call to usb_serial_debug_data
 106  *
 107  * (09/06/2000) gkh
 108  *      Fixed oops in visor_exit.  Need to uncomment usb_unlink_urb call _after_
 109  *      the host controller drivers set urb->dev = NULL when the urb is finished.
 110  *
 111  * (08/28/2000) gkh
 112  *      Added locks for SMP safeness.
 113  *
 114  * (08/08/2000) gkh
 115  *      Fixed endian problem in visor_startup.
 116  *      Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
 117  *      than once.
 118  *
 119  * (07/23/2000) gkh
 120  *      Added pool of write urbs to speed up transfers to the visor.
 121  *
 122  * (07/19/2000) gkh
 123  *      Added module_init and module_exit functions to handle the fact that this
 124  *      driver is a loadable module now.
 125  *
 126  * (07/03/2000) gkh
 127  *      Added visor_set_ioctl and visor_set_termios functions (they don't do much
 128  *      of anything, but are good for debugging.)
 129  *
 130  * (06/25/2000) gkh
 131  *      Fixed bug in visor_unthrottle that should help with the disconnect in PPP
 132  *      bug that people have been reporting.
 133  *
 134  * (06/23/2000) gkh
 135  *      Cleaned up debugging statements in a quest to find UHCI timeout bug.
 136  *
 137  * (04/27/2000) Ryan VanderBijl
 138  *      Fixed memory leak in visor_close
 139  *
 140  * (03/26/2000) gkh
 141  *      Split driver up into device specific pieces.
 142  *
 143  */
 144
 145 #include <linux/config.h>
 146 #include <linux/kernel.h>
 147 #include <linux/errno.h>
 148 #include <linux/init.h>
 149 #include <linux/slab.h>
 150 #include <linux/tty.h>
 151 #include <linux/tty_driver.h>
 152 #include <linux/tty_flip.h>
 153 #include <linux/module.h>
 154 #include <linux/moduleparam.h>
 155 #include <linux/spinlock.h>
 156 #include <asm/uaccess.h>
 157 #include <linux/usb.h>
 158 #include "usb-serial.h"
 159 #include "visor.h"
 160
 161 /*
 162  * Version Information
 163  */
 164 #define DRIVER_VERSION "v2.1"
 165 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
 166 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
 167
 168 /* function prototypes for a handspring visor */
 169 static int  visor_open          (struct usb_serial_port *port, struct file *filp);
 170 static void visor_close         (struct usb_serial_port *port, struct file *filp);
 171 static int  visor_write         (struct usb_serial_port *port, const unsigned char *buf, int count);
 172 static int  visor_write_room            (struct usb_serial_port *port);
 173 static int  visor_chars_in_buffer       (struct usb_serial_port *port);
 174 static void visor_throttle      (struct usb_serial_port *port);
 175 static void visor_unthrottle    (struct usb_serial_port *port);
 176 static int  visor_probe         (struct usb_serial *serial, const struct usb_device_id *id);
 177 static int  visor_calc_num_ports(struct usb_serial *serial);
 178 static void visor_shutdown      (struct usb_serial *serial);
 179 static int  visor_ioctl         (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
 180 static void visor_set_termios   (struct usb_serial_port *port, struct termios *old_termios);
 181 static void visor_write_bulk_callback   (struct urb *urb, struct pt_regs *regs);
 182 static void visor_read_bulk_callback    (struct urb *urb, struct pt_regs *regs);
 183 static void visor_read_int_callback     (struct urb *urb, struct pt_regs *regs);
 184 static int  clie_3_5_startup    (struct usb_serial *serial);
 185 static int  treo_attach         (struct usb_serial *serial);
 186 static int clie_5_attach (struct usb_serial *serial);
 187 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
 188 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);
 189
 190 /* Parameters that may be passed into the module. */
 191 static int debug;
 192 static __u16 vendor;
 193 static __u16 product;
 194
 195 static struct usb_device_id id_table [] = {
 196         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
 197                 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
 198         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
 199                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 200         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
 201                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 202         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
 203                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 204         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
 205                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 206         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
 207                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 208         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
 209                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 210         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
 211                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 212         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
 213                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 214         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
 215                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 216         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
 217                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 218         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
 219                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 220         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
 221                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 222         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID),
 223                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 224         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
 225                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 226         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
 227                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 228         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
 229                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 230         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
 231                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 232         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
 233                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 234         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
 235                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 236         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
 237                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 238         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
 239                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 240         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
 241                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 242         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
 243                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 244         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
 245                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 246         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
 247                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 248         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
 249                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 250         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
 251                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 252         { },                                    /* optional parameter entry */
 253         { }                                     /* Terminating entry */
 254 };
 255
 256 static struct usb_device_id clie_id_5_table [] = {
 257         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 258                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 259         { },                                    /* optional parameter entry */
 260         { }                                     /* Terminating entry */
 261 };
 262
 263 static struct usb_device_id clie_id_3_5_table [] = {
 264         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 265         { }                                     /* Terminating entry */
 266 };
 267
 268 static struct usb_device_id id_table_combined [] = {
 269         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 270         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 271         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 272         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 273         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 274         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 275         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 276         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 277         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 278         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 279         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 280         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
 281         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 282         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID) },
 283         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 284         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 285         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 286         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 287         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 288         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 289         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 290         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 291         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 292         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 293         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 294         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
 295         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 296         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 297         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 298         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
 299         { },                                    /* optional parameter entry */
 300         { }                                     /* Terminating entry */
 301 };
 302
 303 MODULE_DEVICE_TABLE (usb, id_table_combined);
 304
 305 static struct usb_driver visor_driver = {
 306         .owner =        THIS_MODULE,
 307         .name =         "visor",
 308         .probe =        usb_serial_probe,
 309         .disconnect =   usb_serial_disconnect,
 310         .id_table =     id_table_combined,
 311 };
 312
 313 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
 314 static struct usb_serial_device_type handspring_device = {
 315         .owner =                THIS_MODULE,
 316         .name =                 "Handspring Visor / Palm OS",
 317         .short_name =           "visor",
 318         .id_table =             id_table,
 319         .num_interrupt_in =     NUM_DONT_CARE,
 320         .num_bulk_in =          2,
 321         .num_bulk_out =         2,
 322         .num_ports =            2,
 323         .open =                 visor_open,
 324         .close =                visor_close,
 325         .throttle =             visor_throttle,
 326         .unthrottle =           visor_unthrottle,
 327         .attach =               treo_attach,
 328         .probe =                visor_probe,
 329         .calc_num_ports =       visor_calc_num_ports,
 330         .shutdown =             visor_shutdown,
 331         .ioctl =                visor_ioctl,
 332         .set_termios =          visor_set_termios,
 333         .write =                visor_write,
 334         .write_room =           visor_write_room,
 335         .chars_in_buffer =      visor_chars_in_buffer,
 336         .write_bulk_callback =  visor_write_bulk_callback,
 337         .read_bulk_callback =   visor_read_bulk_callback,
 338         .read_int_callback =    visor_read_int_callback,
 339 };
 340
 341 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 342 static struct usb_serial_device_type clie_5_device = {
 343         .owner =                THIS_MODULE,
 344         .name =                 "Sony Clie 5.0",
 345         .short_name =           "clie_5",
 346         .id_table =             clie_id_5_table,
 347         .num_interrupt_in =     NUM_DONT_CARE,
 348         .num_bulk_in =          2,
 349         .num_bulk_out =         2,
 350         .num_ports =            2,
 351         .open =                 visor_open,
 352         .close =                visor_close,
 353         .throttle =             visor_throttle,
 354         .unthrottle =           visor_unthrottle,
 355         .attach =               clie_5_attach,
 356         .probe =                visor_probe,
 357         .calc_num_ports =       visor_calc_num_ports,
 358         .shutdown =             visor_shutdown,
 359         .ioctl =                visor_ioctl,
 360         .set_termios =          visor_set_termios,
 361         .write =                visor_write,
 362         .write_room =           visor_write_room,
 363         .chars_in_buffer =      visor_chars_in_buffer,
 364         .write_bulk_callback =  visor_write_bulk_callback,
 365         .read_bulk_callback =   visor_read_bulk_callback,
 366         .read_int_callback =    visor_read_int_callback,
 367 };
 368
 369 /* device info for the Sony Clie OS version 3.5 */
 370 static struct usb_serial_device_type clie_3_5_device = {
 371         .owner =                THIS_MODULE,
 372         .name =                 "Sony Clie 3.5",
 373         .short_name =           "clie_3.5",
 374         .id_table =             clie_id_3_5_table,
 375         .num_interrupt_in =     0,
 376         .num_bulk_in =          1,
 377         .num_bulk_out =         1,
 378         .num_ports =            1,
 379         .open =                 visor_open,
 380         .close =                visor_close,
 381         .throttle =             visor_throttle,
 382         .unthrottle =           visor_unthrottle,
 383         .attach =               clie_3_5_startup,
 384         .ioctl =                visor_ioctl,
 385         .set_termios =          visor_set_termios,
 386         .write =                visor_write,
 387         .write_room =           visor_write_room,
 388         .chars_in_buffer =      visor_chars_in_buffer,
 389         .write_bulk_callback =  visor_write_bulk_callback,
 390         .read_bulk_callback =   visor_read_bulk_callback,
 391 };
 392
 393 struct visor_private {
 394         spinlock_t lock;
 395         int bytes_in;
 396         int bytes_out;
 397         int outstanding_urbs;
 398         int throttled;
 399 };
 400
 401 /* number of outstanding urbs to prevent userspace DoS from happening */
 402 #define URB_UPPER_LIMIT 42
 403
 404 static int stats;
 405
 406 /******************************************************************************
 407  * Handspring Visor specific driver functions
 408  ******************************************************************************/
 409 static int visor_open (struct usb_serial_port *port, struct file *filp)
 410 {
 411         struct usb_serial *serial = port->serial;
 412         struct visor_private *priv = usb_get_serial_port_data(port);
 413         unsigned long flags;
 414         int result = 0;
 415
 416         dbg("%s - port %d", __FUNCTION__, port->number);
 417
 418         if (!port->read_urb) {
 419                 /* this is needed for some brain dead Sony devices */
 420                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 421                 return -ENODEV;
 422         }
 423
 424         spin_lock_irqsave(&priv->lock, flags);
 425         priv->bytes_in = 0;
 426         priv->bytes_out = 0;
 427         priv->outstanding_urbs = 0;
 428         priv->throttled = 0;
 429         spin_unlock_irqrestore(&priv->lock, flags);
 430
 431         /*
 432          * Force low_latency on so that our tty_push actually forces the data
 433          * through, otherwise it is scheduled, and with high data rates (like
 434          * with OHCI) data can get lost.
 435          */
 436         if (port->tty)
 437                 port->tty->low_latency = 1;
 438
 439         /* Start reading from the device */
 440         usb_fill_bulk_urb (port->read_urb, serial->dev,
 441                            usb_rcvbulkpipe (serial->dev,
 442                                             port->bulk_in_endpointAddress),
 443                            port->read_urb->transfer_buffer,
 444                            port->read_urb->transfer_buffer_length,
 445                            visor_read_bulk_callback, port);
 446         result = usb_submit_urb(port->read_urb, GFP_KERNEL);
 447         if (result) {
 448                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
 449                         __FUNCTION__, result);
 450                 goto exit;
 451         }
 452
 453         if (port->interrupt_in_urb) {
 454                 dbg("%s - adding interrupt input for treo", __FUNCTION__);
 455                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 456                 if (result)
 457                         dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
 458                                 __FUNCTION__, result);
 459         }
 460 exit:
 461         return result;
 462 }
 463
 464
 465 static void visor_close (struct usb_serial_port *port, struct file * filp)
 466 {
 467         struct visor_private *priv = usb_get_serial_port_data(port);
 468         unsigned char *transfer_buffer;
 469
 470         dbg("%s - port %d", __FUNCTION__, port->number);
 471
 472         /* shutdown our urbs */
 473         usb_kill_urb(port->read_urb);
 474         if (port->interrupt_in_urb)
 475                 usb_kill_urb(port->interrupt_in_urb);
 476
 477         /* Try to send shutdown message, if the device is gone, this will just fail. */
 478         transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
 479         if (transfer_buffer) {
 480                 usb_control_msg (port->serial->dev,
 481                                  usb_rcvctrlpipe(port->serial->dev, 0),
 482                                  VISOR_CLOSE_NOTIFICATION, 0xc2,
 483                                  0x0000, 0x0000,
 484                                  transfer_buffer, 0x12, 300);
 485                 kfree (transfer_buffer);
 486         }
 487
 488         if (stats)
 489                 dev_info(&port->dev, "Bytes In = %d  Bytes Out = %d\n",
 490                          priv->bytes_in, priv->bytes_out);
 491 }
 492
 493
 494 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
 495 {
 496         struct visor_private *priv = usb_get_serial_port_data(port);
 497         struct usb_serial *serial = port->serial;
 498         struct urb *urb;
 499         unsigned char *buffer;
 500         unsigned long flags;
 501         int status;
 502
 503         dbg("%s - port %d", __FUNCTION__, port->number);
 504
 505         spin_lock_irqsave(&priv->lock, flags);
 506         if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
 507                 spin_unlock_irqrestore(&priv->lock, flags);
 508                 dbg("%s - write limit hit\n", __FUNCTION__);
 509                 return 0;
 510         }
 511         spin_unlock_irqrestore(&priv->lock, flags);
 512
 513         buffer = kmalloc (count, GFP_ATOMIC);
 514         if (!buffer) {
 515                 dev_err(&port->dev, "out of memory\n");
 516                 return -ENOMEM;
 517         }
 518
 519         urb = usb_alloc_urb(0, GFP_ATOMIC);
 520         if (!urb) {
 521                 dev_err(&port->dev, "no more free urbs\n");
 522                 kfree (buffer);
 523                 return -ENOMEM;
 524         }
 525
 526         memcpy (buffer, buf, count);
 527
 528         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 529
 530         usb_fill_bulk_urb (urb, serial->dev,
 531                            usb_sndbulkpipe (serial->dev,
 532                                             port->bulk_out_endpointAddress),
 533                            buffer, count,
 534                            visor_write_bulk_callback, port);
 535
 536         /* send it down the pipe */
 537         status = usb_submit_urb(urb, GFP_ATOMIC);
 538         if (status) {
 539                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
 540                         __FUNCTION__, status);
 541                 count = status;
 542                 kfree (buffer);
 543         } else {
 544                 spin_lock_irqsave(&priv->lock, flags);
 545                 ++priv->outstanding_urbs;
 546                 priv->bytes_out += count;
 547                 spin_unlock_irqrestore(&priv->lock, flags);
 548         }
 549
 550         /* we are done with this urb, so let the host driver
 551          * really free it when it is finished with it */
 552         usb_free_urb (urb);
 553
 554         return count;
 555 }
 556
 557
 558 static int visor_write_room (struct usb_serial_port *port)
 559 {
 560         dbg("%s - port %d", __FUNCTION__, port->number);
 561
 562         /*
 563          * We really can take anything the user throws at us
 564          * but let's pick a nice big number to tell the tty
 565          * layer that we have lots of free space
 566          */
 567         return 2048;
 568 }
 569
 570
 571 static int visor_chars_in_buffer (struct usb_serial_port *port)
 572 {
 573         dbg("%s - port %d", __FUNCTION__, port->number);
 574
 575         /*
 576          * We can't really account for how much data we
 577          * have sent out, but hasn't made it through to the
 578          * device, so just tell the tty layer that everything
 579          * is flushed.
 580          */
 581         return 0;
 582 }
 583
 584
 585 static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 586 {
 587         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 588         struct visor_private *priv = usb_get_serial_port_data(port);
 589         unsigned long flags;
 590
 591         /* free up the transfer buffer, as usb_free_urb() does not do this */
 592         kfree (urb->transfer_buffer);
 593
 594         dbg("%s - port %d", __FUNCTION__, port->number);
 595
 596         if (urb->status)
 597                 dbg("%s - nonzero write bulk status received: %d",
 598                     __FUNCTION__, urb->status);
 599
 600         spin_lock_irqsave(&priv->lock, flags);
 601         --priv->outstanding_urbs;
 602         spin_unlock_irqrestore(&priv->lock, flags);
 603
 604         schedule_work(&port->work);
 605 }
 606
 607
 608 static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 609 {
 610         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 611         struct visor_private *priv = usb_get_serial_port_data(port);
 612         unsigned char *data = urb->transfer_buffer;
 613         struct tty_struct *tty;
 614         unsigned long flags;
 615         int i;
 616         int throttled;
 617         int result;
 618
 619         dbg("%s - port %d", __FUNCTION__, port->number);
 620
 621         if (urb->status) {
 622                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 623                 return;
 624         }
 625
 626         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
 627
 628         tty = port->tty;
 629         if (tty && urb->actual_length) {
 630                 for (i = 0; i < urb->actual_length ; ++i) {
 631                         /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
 632                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 633                                 tty_flip_buffer_push(tty);
 634                         }
 635                         /* this doesn't actually push the data through unless tty->low_latency is set */
 636                         tty_insert_flip_char(tty, data[i], 0);
 637                 }
 638                 tty_flip_buffer_push(tty);
 639         }
 640         spin_lock_irqsave(&priv->lock, flags);
 641         priv->bytes_in += urb->actual_length;
 642         throttled = priv->throttled;
 643         spin_unlock_irqrestore(&priv->lock, flags);
 644
 645         /* Continue trying to always read if we should */
 646         if (!throttled) {
 647                 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
 648                                    usb_rcvbulkpipe(port->serial->dev,
 649                                                    port->bulk_in_endpointAddress),
 650                                    port->read_urb->transfer_buffer,
 651                                    port->read_urb->transfer_buffer_length,
 652                                    visor_read_bulk_callback, port);
 653                 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 654                 if (result)
 655                         dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
 656         }
 657         return;
 658 }
 659
 660 static void visor_read_int_callback (struct urb *urb, struct pt_regs *regs)
 661 {
 662         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 663         int result;
 664
 665         switch (urb->status) {
 666         case 0:
 667                 /* success */
 668                 break;
 669         case -ECONNRESET:
 670         case -ENOENT:
 671         case -ESHUTDOWN:
 672                 /* this urb is terminated, clean up */
 673                 dbg("%s - urb shutting down with status: %d",
 674                     __FUNCTION__, urb->status);
 675                 return;
 676         default:
 677                 dbg("%s - nonzero urb status received: %d",
 678                     __FUNCTION__, urb->status);
 679                 goto exit;
 680         }
 681
 682         /*
 683          * This information is still unknown what it can be used for.
 684          * If anyone has an idea, please let the author know...
 685          *
 686          * Rumor has it this endpoint is used to notify when data
 687          * is ready to be read from the bulk ones.
 688          */
 689         usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
 690                               urb->actual_length, urb->transfer_buffer);
 691
 692 exit:
 693         result = usb_submit_urb (urb, GFP_ATOMIC);
 694         if (result)
 695                 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
 696                         __FUNCTION__, result);
 697 }
 698
 699 static void visor_throttle (struct usb_serial_port *port)
 700 {
 701         struct visor_private *priv = usb_get_serial_port_data(port);
 702         unsigned long flags;
 703
 704         dbg("%s - port %d", __FUNCTION__, port->number);
 705         spin_lock_irqsave(&priv->lock, flags);
 706         priv->throttled = 1;
 707         spin_unlock_irqrestore(&priv->lock, flags);
 708 }
 709
 710
 711 static void visor_unthrottle (struct usb_serial_port *port)
 712 {
 713         struct visor_private *priv = usb_get_serial_port_data(port);
 714         unsigned long flags;
 715         int result;
 716
 717         dbg("%s - port %d", __FUNCTION__, port->number);
 718         spin_lock_irqsave(&priv->lock, flags);
 719         priv->throttled = 0;
 720         spin_unlock_irqrestore(&priv->lock, flags);
 721
 722         port->read_urb->dev = port->serial->dev;
 723         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 724         if (result)
 725                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
 726 }
 727
 728 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
 729 {
 730         struct device *dev = &serial->dev->dev;
 731         struct visor_connection_info *connection_info;
 732         unsigned char *transfer_buffer;
 733         char *string;
 734         int retval = 0;
 735         int i;
 736         int num_ports = 0;
 737
 738         dbg("%s", __FUNCTION__);
 739
 740         transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
 741         if (!transfer_buffer) {
 742                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 743                         sizeof(*connection_info));
 744                 return -ENOMEM;
 745         }
 746
 747         /* send a get connection info request */
 748         retval = usb_control_msg (serial->dev,
 749                                   usb_rcvctrlpipe(serial->dev, 0),
 750                                   VISOR_GET_CONNECTION_INFORMATION,
 751                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 752                                   sizeof(*connection_info), 300);
 753         if (retval < 0) {
 754                 dev_err(dev, "%s - error %d getting connection information\n",
 755                         __FUNCTION__, retval);
 756                 goto exit;
 757         }
 758
 759         if (retval == sizeof(*connection_info)) {
 760                 connection_info = (struct visor_connection_info *)transfer_buffer;
 761
 762                 num_ports = le16_to_cpu(connection_info->num_ports);
 763                 for (i = 0; i < num_ports; ++i) {
 764                         switch (connection_info->connections[i].port_function_id) {
 765                                 case VISOR_FUNCTION_GENERIC:
 766                                         string = "Generic";
 767                                         break;
 768                                 case VISOR_FUNCTION_DEBUGGER:
 769                                         string = "Debugger";
 770                                         break;
 771                                 case VISOR_FUNCTION_HOTSYNC:
 772                                         string = "HotSync";
 773                                         break;
 774                                 case VISOR_FUNCTION_CONSOLE:
 775                                         string = "Console";
 776                                         break;
 777                                 case VISOR_FUNCTION_REMOTE_FILE_SYS:
 778                                         string = "Remote File System";
 779                                         break;
 780                                 default:
 781                                         string = "unknown";
 782                                         break;
 783                         }
 784                         dev_info(dev, "%s: port %d, is for %s use\n",
 785                                 serial->type->name,
 786                                 connection_info->connections[i].port, string);
 787                 }
 788         }
 789         /*
 790         * Handle devices that report invalid stuff here.
 791         */
 792         if (num_ports == 0 || num_ports > 2) {
 793                 dev_warn (dev, "%s: No valid connect info available\n",
 794                         serial->type->name);
 795                 num_ports = 2;
 796         }
 797
 798         dev_info(dev, "%s: Number of ports: %d\n", serial->type->name,
 799                 num_ports);
 800
 801         /*
 802          * save off our num_ports info so that we can use it in the
 803          * calc_num_ports callback
 804          */
 805         usb_set_serial_data(serial, (void *)(long)num_ports);
 806
 807         /* ask for the number of bytes available, but ignore the response as it is broken */
 808         retval = usb_control_msg (serial->dev,
 809                                   usb_rcvctrlpipe(serial->dev, 0),
 810                                   VISOR_REQUEST_BYTES_AVAILABLE,
 811                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 812                                   0x02, 300);
 813         if (retval < 0)
 814                 dev_err(dev, "%s - error %d getting bytes available request\n",
 815                         __FUNCTION__, retval);
 816         retval = 0;
 817
 818 exit:
 819         kfree (transfer_buffer);
 820
 821         return retval;
 822 }
 823
 824 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
 825 {
 826         struct device *dev = &serial->dev->dev;
 827         struct palm_ext_connection_info *connection_info;
 828         unsigned char *transfer_buffer;
 829         int retval;
 830
 831         dbg("%s", __FUNCTION__);
 832
 833         transfer_buffer =  kmalloc (sizeof (*connection_info), GFP_KERNEL);
 834         if (!transfer_buffer) {
 835                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 836                         sizeof(*connection_info));
 837                 return -ENOMEM;
 838         }
 839
 840         retval = usb_control_msg (serial->dev,
 841                                   usb_rcvctrlpipe(serial->dev, 0),
 842                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 843                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 844                                   sizeof (*connection_info), 300);
 845         if (retval < 0)
 846                 dev_err(dev, "%s - error %d getting connection info\n",
 847                         __FUNCTION__, retval);
 848         else
 849                 usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
 850                                       retval, transfer_buffer);
 851
 852         kfree (transfer_buffer);
 853         return 0;
 854 }
 855
 856
 857 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
 858 {
 859         int retval = 0;
 860         int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
 861
 862         dbg("%s", __FUNCTION__);
 863
 864         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 865                 err("active config #%d != 1 ??",
 866                         serial->dev->actconfig->desc.bConfigurationValue);
 867                 return -ENODEV;
 868         }
 869
 870         if (id->driver_info) {
 871                 startup = (void *)id->driver_info;
 872                 retval = startup(serial, id);
 873         }
 874
 875         return retval;
 876 }
 877
 878 static int visor_calc_num_ports (struct usb_serial *serial)
 879 {
 880         int num_ports = (int)(long)(usb_get_serial_data(serial));
 881
 882         if (num_ports)
 883                 usb_set_serial_data(serial, NULL);
 884
 885         return num_ports;
 886 }
 887
 888 static int generic_startup(struct usb_serial *serial)
 889 {
 890         struct visor_private *priv;
 891         int i;
 892
 893         for (i = 0; i < serial->num_ports; ++i) {
 894                 priv = kmalloc (sizeof(*priv), GFP_KERNEL);
 895                 if (!priv)
 896                         return -ENOMEM;
 897                 memset (priv, 0x00, sizeof(*priv));
 898                 spin_lock_init(&priv->lock);
 899                 usb_set_serial_port_data(serial->port[i], priv);
 900         }
 901         return 0;
 902 }
 903
 904 static int clie_3_5_startup (struct usb_serial *serial)
 905 {
 906         struct device *dev = &serial->dev->dev;
 907         int result;
 908         u8 data;
 909
 910         dbg("%s", __FUNCTION__);
 911
 912         /*
 913          * Note that PEG-300 series devices expect the following two calls.
 914          */
 915
 916         /* get the config number */
 917         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 918                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 919                                   0, 0, &data, 1, 3000);
 920         if (result < 0) {
 921                 dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
 922                 return result;
 923         }
 924         if (result != 1) {
 925                 dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
 926                 return -EIO;
 927         }
 928
 929         /* get the interface number */
 930         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 931                                   USB_REQ_GET_INTERFACE,
 932                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 933                                   0, 0, &data, 1, 3000);
 934         if (result < 0) {
 935                 dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
 936                 return result;
 937         }
 938         if (result != 1) {
 939                 dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
 940                 return -EIO;
 941         }
 942
 943         return generic_startup(serial);
 944 }
 945
 946 static int treo_attach (struct usb_serial *serial)
 947 {
 948         struct usb_serial_port *swap_port;
 949
 950         /* Only do this endpoint hack for the Handspring devices with
 951          * interrupt in endpoints, which for now are the Treo devices. */
 952         if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
 953               (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
 954             (serial->num_interrupt_in == 0))
 955                 goto generic_startup;
 956
 957         dbg("%s", __FUNCTION__);
 958
 959         /*
 960         * It appears that Treos and Kyoceras want to use the
 961         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 962         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 963         * Note that swapping the bulk out endpoints would break lots of
 964         * apps that want to communicate on the second port.
 965         */
 966 #define COPY_PORT(dest, src)                                            \
 967         dest->read_urb = src->read_urb;                                 \
 968         dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;   \
 969         dest->bulk_in_buffer = src->bulk_in_buffer;                     \
 970         dest->interrupt_in_urb = src->interrupt_in_urb;                 \
 971         dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
 972         dest->interrupt_in_buffer = src->interrupt_in_buffer;
 973
 974         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 975         if (!swap_port)
 976                 return -ENOMEM;
 977         COPY_PORT(swap_port, serial->port[0]);
 978         COPY_PORT(serial->port[0], serial->port[1]);
 979         COPY_PORT(serial->port[1], swap_port);
 980         kfree(swap_port);
 981
 982 generic_startup:
 983         return generic_startup(serial);
 984 }
 985
 986 static int clie_5_attach (struct usb_serial *serial)
 987 {
 988         dbg("%s", __FUNCTION__);
 989
 990         /* TH55 registers 2 ports.
 991            Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
 992            Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
 993
 994            Lets do a quick and dirty mapping
 995          */
 996
 997         /* some sanity check */
 998         if (serial->num_ports < 2)
 999                 return -1;
1000
1001         /* port 0 now uses the modified endpoint Address */
1002         serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
1003
1004         return generic_startup(serial);
1005 }
1006
1007 static void visor_shutdown (struct usb_serial *serial)
1008 {
1009         dbg("%s", __FUNCTION__);
1010 }
1011
1012 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
1013 {
1014         dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
1015
1016         return -ENOIOCTLCMD;
1017 }
1018
1019
1020 /* This function is all nice and good, but we don't change anything based on it :) */
1021 static void visor_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1022 {
1023         unsigned int cflag;
1024
1025         dbg("%s - port %d", __FUNCTION__, port->number);
1026
1027         if ((!port->tty) || (!port->tty->termios)) {
1028                 dbg("%s - no tty structures", __FUNCTION__);
1029                 return;
1030         }
1031
1032         cflag = port->tty->termios->c_cflag;
1033         /* check that they really want us to change something */
1034         if (old_termios) {
1035                 if ((cflag == old_termios->c_cflag) &&
1036                     (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1037                         dbg("%s - nothing to change...", __FUNCTION__);
1038                         return;
1039                 }
1040         }
1041
1042         /* get the byte size */
1043         switch (cflag & CSIZE) {
1044                 case CS5:       dbg("%s - data bits = 5", __FUNCTION__);   break;
1045                 case CS6:       dbg("%s - data bits = 6", __FUNCTION__);   break;
1046                 case CS7:       dbg("%s - data bits = 7", __FUNCTION__);   break;
1047                 default:
1048                 case CS8:       dbg("%s - data bits = 8", __FUNCTION__);   break;
1049         }
1050
1051         /* determine the parity */
1052         if (cflag & PARENB)
1053                 if (cflag & PARODD)
1054                         dbg("%s - parity = odd", __FUNCTION__);
1055                 else
1056                         dbg("%s - parity = even", __FUNCTION__);
1057         else
1058                 dbg("%s - parity = none", __FUNCTION__);
1059
1060         /* figure out the stop bits requested */
1061         if (cflag & CSTOPB)
1062                 dbg("%s - stop bits = 2", __FUNCTION__);
1063         else
1064                 dbg("%s - stop bits = 1", __FUNCTION__);
1065
1066
1067         /* figure out the flow control settings */
1068         if (cflag & CRTSCTS)
1069                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
1070         else
1071                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
1072
1073         /* determine software flow control */
1074         if (I_IXOFF(port->tty))
1075                 dbg("%s - XON/XOFF is enabled, XON = %2x, XOFF = %2x",
1076                     __FUNCTION__, START_CHAR(port->tty), STOP_CHAR(port->tty));
1077         else
1078                 dbg("%s - XON/XOFF is disabled", __FUNCTION__);
1079
1080         /* get the baud rate wanted */
1081         dbg("%s - baud rate = %d", __FUNCTION__, tty_get_baud_rate(port->tty));
1082
1083         return;
1084 }
1085
1086
1087 static int __init visor_init (void)
1088 {
1089         int i, retval;
1090         /* Only if parameters were passed to us */
1091         if ((vendor>0) && (product>0)) {
1092                 struct usb_device_id usb_dev_temp[]=
1093                         {{USB_DEVICE(vendor, product),
1094                         .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
1095
1096                 /* Find the last entry in id_table */
1097                 for (i=0; ; i++) {
1098                         if (id_table[i].idVendor==0) {
1099                                 id_table[i] = usb_dev_temp[0];
1100                                 break;
1101                         }
1102                 }
1103                 /* Find the last entry in id_table_combined */
1104                 for (i=0; ; i++) {
1105                         if (id_table_combined[i].idVendor==0) {
1106                                 id_table_combined[i] = usb_dev_temp[0];
1107                                 break;
1108                         }
1109                 }
1110                 info("Untested USB device specified at time of module insertion");
1111                 info("Warning: This is not guaranteed to work");
1112                 info("Using a newer kernel is preferred to this method");
1113                 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
1114                         vendor, product);
1115         }
1116         retval = usb_serial_register(&handspring_device);
1117         if (retval)
1118                 goto failed_handspring_register;
1119         retval = usb_serial_register(&clie_3_5_device);
1120         if (retval)
1121                 goto failed_clie_3_5_register;
1122         retval = usb_serial_register(&clie_5_device);
1123         if (retval)
1124                 goto failed_clie_5_register;
1125         retval = usb_register(&visor_driver);
1126         if (retval)
1127                 goto failed_usb_register;
1128         info(DRIVER_DESC " " DRIVER_VERSION);
1129
1130         return 0;
1131 failed_usb_register:
1132         usb_serial_deregister(&clie_5_device);
1133 failed_clie_5_register:
1134         usb_serial_deregister(&clie_3_5_device);
1135 failed_clie_3_5_register:
1136         usb_serial_deregister(&handspring_device);
1137 failed_handspring_register:
1138         return retval;
1139 }
1140
1141
1142 static void __exit visor_exit (void)
1143 {
1144         usb_deregister (&visor_driver);
1145         usb_serial_deregister (&handspring_device);
1146         usb_serial_deregister (&clie_3_5_device);
1147         usb_serial_deregister (&clie_5_device);
1148 }
1149
1150
1151 module_init(visor_init);
1152 module_exit(visor_exit);
1153
1154 MODULE_AUTHOR( DRIVER_AUTHOR );
1155 MODULE_DESCRIPTION( DRIVER_DESC );
1156 MODULE_LICENSE("GPL");
1157
1158 module_param(debug, bool, S_IRUGO | S_IWUSR);
1159 MODULE_PARM_DESC(debug, "Debug enabled or not");
1160 module_param(stats, bool, S_IRUGO | S_IWUSR);
1161 MODULE_PARM_DESC(stats, "Enables statistics or not");
1162
1163 module_param(vendor, ushort, 0);
1164 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1165 module_param(product, ushort, 0);
1166 MODULE_PARM_DESC(product, "User specified product ID");
1167