drivers/usb/serial/visor.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * USB HandSpring Visor, Palm m50x, and Sony Clie driver
   4  * (supports all of the Palm OS USB devices)
   5  *
   6  *      Copyright (C) 1999 - 2004
   7  *          Greg Kroah-Hartman ([email protected])
   8  *
   9  * See Documentation/usb/usb-serial.rst for more information on using this
  10  * driver
  11  *
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/errno.h>
  16 #include <linux/slab.h>
  17 #include <linux/tty.h>
  18 #include <linux/tty_driver.h>
  19 #include <linux/tty_flip.h>
  20 #include <linux/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/spinlock.h>
  23 #include <linux/uaccess.h>
  24 #include <linux/usb.h>
  25 #include <linux/usb/serial.h>
  26 #include <linux/usb/cdc.h>
  27 #include "visor.h"
  28
  29 /*
  30  * Version Information
  31  */
  32 #define DRIVER_AUTHOR "Greg Kroah-Hartman <[email protected]>"
  33 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
  34
  35 /* function prototypes for a handspring visor */
  36 static int  visor_open(struct tty_struct *tty, struct usb_serial_port *port);
  37 static void visor_close(struct usb_serial_port *port);
  38 static int  visor_probe(struct usb_serial *serial,
  39                                         const struct usb_device_id *id);
  40 static int  visor_calc_num_ports(struct usb_serial *serial,
  41                                         struct usb_serial_endpoints *epds);
  42 static int  clie_5_calc_num_ports(struct usb_serial *serial,
  43                                         struct usb_serial_endpoints *epds);
  44 static void visor_read_int_callback(struct urb *urb);
  45 static int  clie_3_5_startup(struct usb_serial *serial);
  46 static int palm_os_3_probe(struct usb_serial *serial,
  47                                         const struct usb_device_id *id);
  48 static int palm_os_4_probe(struct usb_serial *serial,
  49                                         const struct usb_device_id *id);
  50
  51 static const struct usb_device_id id_table[] = {
  52         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
  53                 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
  54         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
  55                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  56         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
  57                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  58         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
  59                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  60         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
  61                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  62         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
  63                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  64         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
  65                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  66         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
  67                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  68         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
  69                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  70         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
  71                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  72         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
  73                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  74         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
  75                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  76         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
  77                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  78         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
  79                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  80         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
  81                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  82         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
  83                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  84         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
  85                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  86         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
  87                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  88         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
  89                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  90         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
  91                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  92         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
  93                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  94         { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
  95                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  96         { USB_DEVICE_INTERFACE_CLASS(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID, 0xff),
  97                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  98         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
  99                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 100         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
 101                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 102         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
 103                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 104         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
 105                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 106         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
 107                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 108         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
 109                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 110         { }                                     /* Terminating entry */
 111 };
 112
 113 static const struct usb_device_id clie_id_5_table[] = {
 114         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 115                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 116         { }                                     /* Terminating entry */
 117 };
 118
 119 static const struct usb_device_id clie_id_3_5_table[] = {
 120         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 121         { }                                     /* Terminating entry */
 122 };
 123
 124 static const struct usb_device_id id_table_combined[] = {
 125         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 126         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 127         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 128         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
 129         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 130         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 131         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 132         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 133         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 134         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 135         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 136         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 137         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
 138         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 139         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 140         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 141         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 142         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 143         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 144         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 145         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 146         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 147         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 148         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 149         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 150         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
 151         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 152         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 153         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 154         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
 155         { }                                     /* Terminating entry */
 156 };
 157
 158 MODULE_DEVICE_TABLE(usb, id_table_combined);
 159
 160 /* All of the device info needed for the Handspring Visor,
 161    and Palm 4.0 devices */
 162 static struct usb_serial_driver handspring_device = {
 163         .driver = {
 164                 .name =         "visor",
 165         },
 166         .description =          "Handspring Visor / Palm OS",
 167         .id_table =             id_table,
 168         .num_ports =            2,
 169         .bulk_out_size =        256,
 170         .open =                 visor_open,
 171         .close =                visor_close,
 172         .throttle =             usb_serial_generic_throttle,
 173         .unthrottle =           usb_serial_generic_unthrottle,
 174         .probe =                visor_probe,
 175         .calc_num_ports =       visor_calc_num_ports,
 176         .read_int_callback =    visor_read_int_callback,
 177 };
 178
 179 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 180 static struct usb_serial_driver clie_5_device = {
 181         .driver = {
 182                 .name =         "clie_5",
 183         },
 184         .description =          "Sony Clie 5.0",
 185         .id_table =             clie_id_5_table,
 186         .num_ports =            2,
 187         .num_bulk_out =         2,
 188         .bulk_out_size =        256,
 189         .open =                 visor_open,
 190         .close =                visor_close,
 191         .throttle =             usb_serial_generic_throttle,
 192         .unthrottle =           usb_serial_generic_unthrottle,
 193         .probe =                visor_probe,
 194         .calc_num_ports =       clie_5_calc_num_ports,
 195         .read_int_callback =    visor_read_int_callback,
 196 };
 197
 198 /* device info for the Sony Clie OS version 3.5 */
 199 static struct usb_serial_driver clie_3_5_device = {
 200         .driver = {
 201                 .name =         "clie_3.5",
 202         },
 203         .description =          "Sony Clie 3.5",
 204         .id_table =             clie_id_3_5_table,
 205         .num_ports =            1,
 206         .bulk_out_size =        256,
 207         .open =                 visor_open,
 208         .close =                visor_close,
 209         .throttle =             usb_serial_generic_throttle,
 210         .unthrottle =           usb_serial_generic_unthrottle,
 211         .attach =               clie_3_5_startup,
 212 };
 213
 214 static struct usb_serial_driver * const serial_drivers[] = {
 215         &handspring_device, &clie_5_device, &clie_3_5_device, NULL
 216 };
 217
 218 /******************************************************************************
 219  * Handspring Visor specific driver functions
 220  ******************************************************************************/
 221 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
 222 {
 223         int result = 0;
 224
 225         if (!port->read_urb) {
 226                 /* this is needed for some brain dead Sony devices */
 227                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 228                 return -ENODEV;
 229         }
 230
 231         /* Start reading from the device */
 232         result = usb_serial_generic_open(tty, port);
 233         if (result)
 234                 goto exit;
 235
 236         if (port->interrupt_in_urb) {
 237                 dev_dbg(&port->dev, "adding interrupt input for treo\n");
 238                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 239                 if (result)
 240                         dev_err(&port->dev,
 241                             "%s - failed submitting interrupt urb, error %d\n",
 242                                                         __func__, result);
 243         }
 244 exit:
 245         return result;
 246 }
 247
 248
 249 static void visor_close(struct usb_serial_port *port)
 250 {
 251         unsigned char *transfer_buffer;
 252
 253         usb_serial_generic_close(port);
 254         usb_kill_urb(port->interrupt_in_urb);
 255
 256         transfer_buffer = kmalloc(0x12, GFP_KERNEL);
 257         if (!transfer_buffer)
 258                 return;
 259         usb_control_msg(port->serial->dev,
 260                                          usb_rcvctrlpipe(port->serial->dev, 0),
 261                                          VISOR_CLOSE_NOTIFICATION, 0xc2,
 262                                          0x0000, 0x0000,
 263                                          transfer_buffer, 0x12, 300);
 264         kfree(transfer_buffer);
 265 }
 266
 267 static void visor_read_int_callback(struct urb *urb)
 268 {
 269         struct usb_serial_port *port = urb->context;
 270         int status = urb->status;
 271         int result;
 272
 273         switch (status) {
 274         case 0:
 275                 /* success */
 276                 break;
 277         case -ECONNRESET:
 278         case -ENOENT:
 279         case -ESHUTDOWN:
 280                 /* this urb is terminated, clean up */
 281                 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
 282                         __func__, status);
 283                 return;
 284         default:
 285                 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
 286                         __func__, status);
 287                 goto exit;
 288         }
 289
 290         /*
 291          * This information is still unknown what it can be used for.
 292          * If anyone has an idea, please let the author know...
 293          *
 294          * Rumor has it this endpoint is used to notify when data
 295          * is ready to be read from the bulk ones.
 296          */
 297         usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
 298                               urb->transfer_buffer);
 299
 300 exit:
 301         result = usb_submit_urb(urb, GFP_ATOMIC);
 302         if (result)
 303                 dev_err(&urb->dev->dev,
 304                                 "%s - Error %d submitting interrupt urb\n",
 305                                                         __func__, result);
 306 }
 307
 308 static int palm_os_3_probe(struct usb_serial *serial,
 309                                                 const struct usb_device_id *id)
 310 {
 311         struct device *dev = &serial->dev->dev;
 312         struct visor_connection_info *connection_info;
 313         unsigned char *transfer_buffer;
 314         char *string;
 315         int retval = 0;
 316         int i;
 317         int num_ports = 0;
 318
 319         transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
 320         if (!transfer_buffer)
 321                 return -ENOMEM;
 322
 323         /* send a get connection info request */
 324         retval = usb_control_msg(serial->dev,
 325                                   usb_rcvctrlpipe(serial->dev, 0),
 326                                   VISOR_GET_CONNECTION_INFORMATION,
 327                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 328                                   sizeof(*connection_info), 300);
 329         if (retval < 0) {
 330                 dev_err(dev, "%s - error %d getting connection information\n",
 331                         __func__, retval);
 332                 goto exit;
 333         }
 334
 335         if (retval != sizeof(*connection_info)) {
 336                 dev_err(dev, "Invalid connection information received from device\n");
 337                 retval = -ENODEV;
 338                 goto exit;
 339         }
 340
 341         connection_info = (struct visor_connection_info *)transfer_buffer;
 342
 343         num_ports = le16_to_cpu(connection_info->num_ports);
 344
 345         /* Handle devices that report invalid stuff here. */
 346         if (num_ports == 0 || num_ports > 2) {
 347                 dev_warn(dev, "%s: No valid connect info available\n",
 348                         serial->type->description);
 349                 num_ports = 2;
 350         }
 351
 352         for (i = 0; i < num_ports; ++i) {
 353                 switch (connection_info->connections[i].port_function_id) {
 354                 case VISOR_FUNCTION_GENERIC:
 355                         string = "Generic";
 356                         break;
 357                 case VISOR_FUNCTION_DEBUGGER:
 358                         string = "Debugger";
 359                         break;
 360                 case VISOR_FUNCTION_HOTSYNC:
 361                         string = "HotSync";
 362                         break;
 363                 case VISOR_FUNCTION_CONSOLE:
 364                         string = "Console";
 365                         break;
 366                 case VISOR_FUNCTION_REMOTE_FILE_SYS:
 367                         string = "Remote File System";
 368                         break;
 369                 default:
 370                         string = "unknown";
 371                         break;
 372                 }
 373                 dev_info(dev, "%s: port %d, is for %s use\n",
 374                         serial->type->description,
 375                         connection_info->connections[i].port, string);
 376         }
 377         dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
 378                 num_ports);
 379
 380         /*
 381          * save off our num_ports info so that we can use it in the
 382          * calc_num_ports callback
 383          */
 384         usb_set_serial_data(serial, (void *)(long)num_ports);
 385
 386         /* ask for the number of bytes available, but ignore the
 387            response as it is broken */
 388         retval = usb_control_msg(serial->dev,
 389                                   usb_rcvctrlpipe(serial->dev, 0),
 390                                   VISOR_REQUEST_BYTES_AVAILABLE,
 391                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 392                                   0x02, 300);
 393         if (retval < 0)
 394                 dev_err(dev, "%s - error %d getting bytes available request\n",
 395                         __func__, retval);
 396         retval = 0;
 397
 398 exit:
 399         kfree(transfer_buffer);
 400
 401         return retval;
 402 }
 403
 404 static int palm_os_4_probe(struct usb_serial *serial,
 405                                                 const struct usb_device_id *id)
 406 {
 407         struct device *dev = &serial->dev->dev;
 408         struct palm_ext_connection_info *connection_info;
 409         unsigned char *transfer_buffer;
 410         int retval;
 411
 412         transfer_buffer =  kmalloc(sizeof(*connection_info), GFP_KERNEL);
 413         if (!transfer_buffer)
 414                 return -ENOMEM;
 415
 416         retval = usb_control_msg(serial->dev,
 417                                   usb_rcvctrlpipe(serial->dev, 0),
 418                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 419                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 420                                   sizeof(*connection_info), 300);
 421         if (retval < 0)
 422                 dev_err(dev, "%s - error %d getting connection info\n",
 423                         __func__, retval);
 424         else
 425                 usb_serial_debug_data(dev, __func__, retval, transfer_buffer);
 426
 427         kfree(transfer_buffer);
 428         return 0;
 429 }
 430
 431
 432 static int visor_probe(struct usb_serial *serial,
 433                                         const struct usb_device_id *id)
 434 {
 435         int retval = 0;
 436         int (*startup)(struct usb_serial *serial,
 437                                         const struct usb_device_id *id);
 438
 439         /*
 440          * some Samsung Android phones in modem mode have the same ID
 441          * as SPH-I500, but they are ACM devices, so dont bind to them
 442          */
 443         if (id->idVendor == SAMSUNG_VENDOR_ID &&
 444                 id->idProduct == SAMSUNG_SPH_I500_ID &&
 445                 serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
 446                 serial->dev->descriptor.bDeviceSubClass ==
 447                         USB_CDC_SUBCLASS_ACM)
 448                 return -ENODEV;
 449
 450         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 451                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
 452                         serial->dev->actconfig->desc.bConfigurationValue);
 453                 return -ENODEV;
 454         }
 455
 456         if (id->driver_info) {
 457                 startup = (void *)id->driver_info;
 458                 retval = startup(serial, id);
 459         }
 460
 461         return retval;
 462 }
 463
 464 static int visor_calc_num_ports(struct usb_serial *serial,
 465                                         struct usb_serial_endpoints *epds)
 466 {
 467         unsigned int vid = le16_to_cpu(serial->dev->descriptor.idVendor);
 468         int num_ports = (int)(long)(usb_get_serial_data(serial));
 469
 470         if (num_ports)
 471                 usb_set_serial_data(serial, NULL);
 472
 473         /*
 474          * Only swap the bulk endpoints for the Handspring devices with
 475          * interrupt in endpoints, which for now are the Treo devices.
 476          */
 477         if (!(vid == HANDSPRING_VENDOR_ID || vid == KYOCERA_VENDOR_ID) ||
 478                         epds->num_interrupt_in == 0)
 479                 goto out;
 480
 481         if (epds->num_bulk_in < 2 || epds->num_interrupt_in < 2) {
 482                 dev_err(&serial->interface->dev, "missing endpoints\n");
 483                 return -ENODEV;
 484         }
 485
 486         /*
 487          * It appears that Treos and Kyoceras want to use the
 488          * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 489          * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 490          * Note that swapping the bulk out endpoints would break lots of
 491          * apps that want to communicate on the second port.
 492          */
 493         swap(epds->bulk_in[0], epds->bulk_in[1]);
 494         swap(epds->interrupt_in[0], epds->interrupt_in[1]);
 495 out:
 496         return num_ports;
 497 }
 498
 499 static int clie_5_calc_num_ports(struct usb_serial *serial,
 500                                         struct usb_serial_endpoints *epds)
 501 {
 502         /*
 503          * TH55 registers 2 ports.
 504          * Communication in from the UX50/TH55 uses the first bulk-in
 505          * endpoint, while communication out to the UX50/TH55 uses the second
 506          * bulk-out endpoint.
 507          */
 508
 509         /*
 510          * FIXME: Should we swap the descriptors instead of using the same
 511          *        bulk-out endpoint for both ports?
 512          */
 513         epds->bulk_out[0] = epds->bulk_out[1];
 514
 515         return serial->type->num_ports;
 516 }
 517
 518 static int clie_3_5_startup(struct usb_serial *serial)
 519 {
 520         struct device *dev = &serial->dev->dev;
 521         int result;
 522         u8 *data;
 523
 524         data = kmalloc(1, GFP_KERNEL);
 525         if (!data)
 526                 return -ENOMEM;
 527
 528         /*
 529          * Note that PEG-300 series devices expect the following two calls.
 530          */
 531
 532         /* get the config number */
 533         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 534                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 535                                   0, 0, data, 1, 3000);
 536         if (result < 0) {
 537                 dev_err(dev, "%s: get config number failed: %d\n",
 538                                                         __func__, result);
 539                 goto out;
 540         }
 541         if (result != 1) {
 542                 dev_err(dev, "%s: get config number bad return length: %d\n",
 543                                                         __func__, result);
 544                 result = -EIO;
 545                 goto out;
 546         }
 547
 548         /* get the interface number */
 549         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 550                                   USB_REQ_GET_INTERFACE,
 551                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 552                                   0, 0, data, 1, 3000);
 553         if (result < 0) {
 554                 dev_err(dev, "%s: get interface number failed: %d\n",
 555                                                         __func__, result);
 556                 goto out;
 557         }
 558         if (result != 1) {
 559                 dev_err(dev,
 560                         "%s: get interface number bad return length: %d\n",
 561                                                         __func__, result);
 562                 result = -EIO;
 563                 goto out;
 564         }
 565
 566         result = 0;
 567 out:
 568         kfree(data);
 569
 570         return result;
 571 }
 572
 573 module_usb_serial_driver(serial_drivers, id_table_combined);
 574
 575 MODULE_AUTHOR(DRIVER_AUTHOR);
 576 MODULE_DESCRIPTION(DRIVER_DESC);
 577 MODULE_LICENSE("GPL v2");