drivers/usb/serial/kobil_sct.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  KOBIL USB Smart Card Terminal Driver
   4  *
   5  *  Copyright (C) 2002  KOBIL Systems GmbH
   6  *  Author: Thomas Wahrenbruch
   7  *
   8  *  Contact: linuxusb@kobil.de
   9  *
  10  *  This program is largely derived from work by the linux-usb group
  11  *  and associated source files.  Please see the usb/serial files for
  12  *  individual credits and copyrights.
  13  *
  14  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
  15  *  patience.
  16  *
  17  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
  18  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
  19  */
  20
  21
  22 #include <linux/kernel.h>
  23 #include <linux/errno.h>
  24 #include <linux/slab.h>
  25 #include <linux/tty.h>
  26 #include <linux/tty_driver.h>
  27 #include <linux/tty_flip.h>
  28 #include <linux/module.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/uaccess.h>
  31 #include <linux/usb.h>
  32 #include <linux/usb/serial.h>
  33 #include <linux/ioctl.h>
  34 #include "kobil_sct.h"
  35
  36 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  37 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  38
  39 #define KOBIL_VENDOR_ID                 0x0D46
  40 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  41 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  42 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  43 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  44
  45 #define KOBIL_TIMEOUT           500
  46 #define KOBIL_BUF_LENGTH        300
  47
  48
  49 /* Function prototypes */
  50 static int kobil_port_probe(struct usb_serial_port *probe);
  51 static void kobil_port_remove(struct usb_serial_port *probe);
  52 static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
  53 static void kobil_close(struct usb_serial_port *port);
  54 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  55                          const unsigned char *buf, int count);
  56 static unsigned int kobil_write_room(struct tty_struct *tty);
  57 static int  kobil_ioctl(struct tty_struct *tty,
  58                         unsigned int cmd, unsigned long arg);
  59 static int  kobil_tiocmget(struct tty_struct *tty);
  60 static int  kobil_tiocmset(struct tty_struct *tty,
  61                            unsigned int set, unsigned int clear);
  62 static void kobil_read_int_callback(struct urb *urb);
  63 static void kobil_write_int_callback(struct urb *urb);
  64 static void kobil_set_termios(struct tty_struct *tty,
  65                         struct usb_serial_port *port, struct ktermios *old);
  66 static void kobil_init_termios(struct tty_struct *tty);
  67
  68 static const struct usb_device_id id_table[] = {
  69         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  70         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  71         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  72         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  73         { }                     /* Terminating entry */
  74 };
  75 MODULE_DEVICE_TABLE(usb, id_table);
  76
  77 static struct usb_serial_driver kobil_device = {
  78         .driver = {
  79                 .owner =        THIS_MODULE,
  80                 .name =         "kobil",
  81         },
  82         .description =          "KOBIL USB smart card terminal",
  83         .id_table =             id_table,
  84         .num_ports =            1,
  85         .num_interrupt_out =    1,
  86         .port_probe =           kobil_port_probe,
  87         .port_remove =          kobil_port_remove,
  88         .ioctl =                kobil_ioctl,
  89         .set_termios =          kobil_set_termios,
  90         .init_termios =         kobil_init_termios,
  91         .tiocmget =             kobil_tiocmget,
  92         .tiocmset =             kobil_tiocmset,
  93         .open =                 kobil_open,
  94         .close =                kobil_close,
  95         .write =                kobil_write,
  96         .write_room =           kobil_write_room,
  97         .read_int_callback =    kobil_read_int_callback,
  98         .write_int_callback =   kobil_write_int_callback,
  99 };
 100
 101 static struct usb_serial_driver * const serial_drivers[] = {
 102         &kobil_device, NULL
 103 };
 104
 105 struct kobil_private {
 106         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
 107         int filled;  /* index of the last char in buf */
 108         int cur_pos; /* index of the next char to send in buf */
 109         __u16 device_type;
 110 };
 111
 112
 113 static int kobil_port_probe(struct usb_serial_port *port)
 114 {
 115         struct usb_serial *serial = port->serial;
 116         struct kobil_private *priv;
 117
 118         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 119         if (!priv)
 120                 return -ENOMEM;
 121
 122         priv->filled = 0;
 123         priv->cur_pos = 0;
 124         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 125
 126         switch (priv->device_type) {
 127         case KOBIL_ADAPTER_B_PRODUCT_ID:
 128                 dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
 129                 break;
 130         case KOBIL_ADAPTER_K_PRODUCT_ID:
 131                 dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 132                 break;
 133         case KOBIL_USBTWIN_PRODUCT_ID:
 134                 dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
 135                 break;
 136         case KOBIL_KAAN_SIM_PRODUCT_ID:
 137                 dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
 138                 break;
 139         }
 140         usb_set_serial_port_data(port, priv);
 141
 142         return 0;
 143 }
 144
 145
 146 static void kobil_port_remove(struct usb_serial_port *port)
 147 {
 148         struct kobil_private *priv;
 149
 150         priv = usb_get_serial_port_data(port);
 151         kfree(priv);
 152 }
 153
 154 static void kobil_init_termios(struct tty_struct *tty)
 155 {
 156         /* Default to echo off and other sane device settings */
 157         tty->termios.c_lflag = 0;
 158         tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 159         tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
 160         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 161         tty->termios.c_oflag &= ~ONLCR;
 162 }
 163
 164 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
 165 {
 166         struct device *dev = &port->dev;
 167         int result = 0;
 168         struct kobil_private *priv;
 169         unsigned char *transfer_buffer;
 170         int transfer_buffer_length = 8;
 171
 172         priv = usb_get_serial_port_data(port);
 173
 174         /* allocate memory for transfer buffer */
 175         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 176         if (!transfer_buffer)
 177                 return -ENOMEM;
 178
 179         /* get hardware version */
 180         result = usb_control_msg(port->serial->dev,
 181                           usb_rcvctrlpipe(port->serial->dev, 0),
 182                           SUSBCRequest_GetMisc,
 183                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 184                           SUSBCR_MSC_GetHWVersion,
 185                           0,
 186                           transfer_buffer,
 187                           transfer_buffer_length,
 188                           KOBIL_TIMEOUT
 189         );
 190         dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
 191         if (result >= 3) {
 192                 dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
 193                                 transfer_buffer[1], transfer_buffer[2]);
 194         }
 195
 196         /* get firmware version */
 197         result = usb_control_msg(port->serial->dev,
 198                           usb_rcvctrlpipe(port->serial->dev, 0),
 199                           SUSBCRequest_GetMisc,
 200                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 201                           SUSBCR_MSC_GetFWVersion,
 202                           0,
 203                           transfer_buffer,
 204                           transfer_buffer_length,
 205                           KOBIL_TIMEOUT
 206         );
 207         dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
 208         if (result >= 3) {
 209                 dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
 210                                 transfer_buffer[1], transfer_buffer[2]);
 211         }
 212
 213         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 214                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 215                 /* Setting Baudrate, Parity and Stopbits */
 216                 result = usb_control_msg(port->serial->dev,
 217                           usb_sndctrlpipe(port->serial->dev, 0),
 218                           SUSBCRequest_SetBaudRateParityAndStopBits,
 219                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 220                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 221                                                         SUSBCR_SPASB_1StopBit,
 222                           0,
 223                           NULL,
 224                           0,
 225                           KOBIL_TIMEOUT
 226                 );
 227                 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
 228
 229                 /* reset all queues */
 230                 result = usb_control_msg(port->serial->dev,
 231                           usb_sndctrlpipe(port->serial->dev, 0),
 232                           SUSBCRequest_Misc,
 233                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 234                           SUSBCR_MSC_ResetAllQueues,
 235                           0,
 236                           NULL,
 237                           0,
 238                           KOBIL_TIMEOUT
 239                 );
 240                 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
 241         }
 242         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 243             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 244             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 245                 /* start reading (Adapter B 'cause PNP string) */
 246                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 247                 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
 248         }
 249
 250         kfree(transfer_buffer);
 251         return 0;
 252 }
 253
 254
 255 static void kobil_close(struct usb_serial_port *port)
 256 {
 257         /* FIXME: Add rts/dtr methods */
 258         usb_kill_urb(port->interrupt_out_urb);
 259         usb_kill_urb(port->interrupt_in_urb);
 260 }
 261
 262
 263 static void kobil_read_int_callback(struct urb *urb)
 264 {
 265         int result;
 266         struct usb_serial_port *port = urb->context;
 267         unsigned char *data = urb->transfer_buffer;
 268         int status = urb->status;
 269
 270         if (status) {
 271                 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
 272                 return;
 273         }
 274
 275         if (urb->actual_length) {
 276                 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
 277                                                                         data);
 278                 tty_insert_flip_string(&port->port, data, urb->actual_length);
 279                 tty_flip_buffer_push(&port->port);
 280         }
 281
 282         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 283         dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
 284 }
 285
 286
 287 static void kobil_write_int_callback(struct urb *urb)
 288 {
 289 }
 290
 291
 292 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 293                         const unsigned char *buf, int count)
 294 {
 295         int length = 0;
 296         int result = 0;
 297         int todo = 0;
 298         struct kobil_private *priv;
 299
 300         if (count == 0) {
 301                 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
 302                 return 0;
 303         }
 304
 305         priv = usb_get_serial_port_data(port);
 306
 307         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 308                 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
 309                 return -ENOMEM;
 310         }
 311
 312         /* Copy data to buffer */
 313         memcpy(priv->buf + priv->filled, buf, count);
 314         usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
 315         priv->filled = priv->filled + count;
 316
 317         /* only send complete block. TWIN, KAAN SIM and adapter K
 318            use the same protocol. */
 319         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 320              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 321                 /* stop reading (except TWIN and KAAN SIM) */
 322                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 323                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 324                         usb_kill_urb(port->interrupt_in_urb);
 325
 326                 todo = priv->filled - priv->cur_pos;
 327
 328                 while (todo > 0) {
 329                         /* max 8 byte in one urb (endpoint size) */
 330                         length = min(todo, port->interrupt_out_size);
 331                         /* copy data to transfer buffer */
 332                         memcpy(port->interrupt_out_buffer,
 333                                         priv->buf + priv->cur_pos, length);
 334                         port->interrupt_out_urb->transfer_buffer_length = length;
 335
 336                         priv->cur_pos = priv->cur_pos + length;
 337                         result = usb_submit_urb(port->interrupt_out_urb,
 338                                         GFP_ATOMIC);
 339                         dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
 340                         todo = priv->filled - priv->cur_pos;
 341
 342                         if (todo > 0)
 343                                 msleep(24);
 344                 }
 345
 346                 priv->filled = 0;
 347                 priv->cur_pos = 0;
 348
 349                 /* start reading (except TWIN and KAAN SIM) */
 350                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 351                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 352                         result = usb_submit_urb(port->interrupt_in_urb,
 353                                         GFP_ATOMIC);
 354                         dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
 355                 }
 356         }
 357         return count;
 358 }
 359
 360
 361 static unsigned int kobil_write_room(struct tty_struct *tty)
 362 {
 363         /* FIXME */
 364         return 8;
 365 }
 366
 367
 368 static int kobil_tiocmget(struct tty_struct *tty)
 369 {
 370         struct usb_serial_port *port = tty->driver_data;
 371         struct kobil_private *priv;
 372         int result;
 373         unsigned char *transfer_buffer;
 374         int transfer_buffer_length = 8;
 375
 376         priv = usb_get_serial_port_data(port);
 377         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 378                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 379                 /* This device doesn't support ioctl calls */
 380                 return -EINVAL;
 381         }
 382
 383         /* allocate memory for transfer buffer */
 384         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 385         if (!transfer_buffer)
 386                 return -ENOMEM;
 387
 388         result = usb_control_msg(port->serial->dev,
 389                           usb_rcvctrlpipe(port->serial->dev, 0),
 390                           SUSBCRequest_GetStatusLineState,
 391                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 392                           0,
 393                           0,
 394                           transfer_buffer,
 395                           transfer_buffer_length,
 396                           KOBIL_TIMEOUT);
 397
 398         dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
 399                         result);
 400         if (result < 1) {
 401                 if (result >= 0)
 402                         result = -EIO;
 403                 goto out_free;
 404         }
 405
 406         dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
 407
 408         result = 0;
 409         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 410                 result = TIOCM_DSR;
 411 out_free:
 412         kfree(transfer_buffer);
 413         return result;
 414 }
 415
 416 static int kobil_tiocmset(struct tty_struct *tty,
 417                            unsigned int set, unsigned int clear)
 418 {
 419         struct usb_serial_port *port = tty->driver_data;
 420         struct device *dev = &port->dev;
 421         struct kobil_private *priv;
 422         int result;
 423         int dtr = 0;
 424         int rts = 0;
 425
 426         /* FIXME: locking ? */
 427         priv = usb_get_serial_port_data(port);
 428         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 429                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 430                 /* This device doesn't support ioctl calls */
 431                 return -EINVAL;
 432         }
 433
 434         if (set & TIOCM_RTS)
 435                 rts = 1;
 436         if (set & TIOCM_DTR)
 437                 dtr = 1;
 438         if (clear & TIOCM_RTS)
 439                 rts = 0;
 440         if (clear & TIOCM_DTR)
 441                 dtr = 0;
 442
 443         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 444                 if (dtr != 0)
 445                         dev_dbg(dev, "%s - Setting DTR\n", __func__);
 446                 else
 447                         dev_dbg(dev, "%s - Clearing DTR\n", __func__);
 448                 result = usb_control_msg(port->serial->dev,
 449                           usb_sndctrlpipe(port->serial->dev, 0),
 450                           SUSBCRequest_SetStatusLinesOrQueues,
 451                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 452                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 453                           0,
 454                           NULL,
 455                           0,
 456                           KOBIL_TIMEOUT);
 457         } else {
 458                 if (rts != 0)
 459                         dev_dbg(dev, "%s - Setting RTS\n", __func__);
 460                 else
 461                         dev_dbg(dev, "%s - Clearing RTS\n", __func__);
 462                 result = usb_control_msg(port->serial->dev,
 463                         usb_sndctrlpipe(port->serial->dev, 0),
 464                         SUSBCRequest_SetStatusLinesOrQueues,
 465                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 466                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 467                         0,
 468                         NULL,
 469                         0,
 470                         KOBIL_TIMEOUT);
 471         }
 472         dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
 473         return (result < 0) ? result : 0;
 474 }
 475
 476 static void kobil_set_termios(struct tty_struct *tty,
 477                         struct usb_serial_port *port, struct ktermios *old)
 478 {
 479         struct kobil_private *priv;
 480         int result;
 481         unsigned short urb_val = 0;
 482         int c_cflag = tty->termios.c_cflag;
 483         speed_t speed;
 484
 485         priv = usb_get_serial_port_data(port);
 486         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 487                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 488                 /* This device doesn't support ioctl calls */
 489                 tty_termios_copy_hw(&tty->termios, old);
 490                 return;
 491         }
 492
 493         speed = tty_get_baud_rate(tty);
 494         switch (speed) {
 495         case 1200:
 496                 urb_val = SUSBCR_SBR_1200;
 497                 break;
 498         default:
 499                 speed = 9600;
 500                 fallthrough;
 501         case 9600:
 502                 urb_val = SUSBCR_SBR_9600;
 503                 break;
 504         }
 505         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 506                                                         SUSBCR_SPASB_1StopBit;
 507         if (c_cflag & PARENB) {
 508                 if  (c_cflag & PARODD)
 509                         urb_val |= SUSBCR_SPASB_OddParity;
 510                 else
 511                         urb_val |= SUSBCR_SPASB_EvenParity;
 512         } else
 513                 urb_val |= SUSBCR_SPASB_NoParity;
 514         tty->termios.c_cflag &= ~CMSPAR;
 515         tty_encode_baud_rate(tty, speed, speed);
 516
 517         result = usb_control_msg(port->serial->dev,
 518                   usb_sndctrlpipe(port->serial->dev, 0),
 519                   SUSBCRequest_SetBaudRateParityAndStopBits,
 520                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 521                   urb_val,
 522                   0,
 523                   NULL,
 524                   0,
 525                   KOBIL_TIMEOUT
 526                 );
 527         if (result) {
 528                 dev_err(&port->dev, "failed to update line settings: %d\n",
 529                                 result);
 530         }
 531 }
 532
 533 static int kobil_ioctl(struct tty_struct *tty,
 534                                         unsigned int cmd, unsigned long arg)
 535 {
 536         struct usb_serial_port *port = tty->driver_data;
 537         struct kobil_private *priv = usb_get_serial_port_data(port);
 538         int result;
 539
 540         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 541                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 542                 /* This device doesn't support ioctl calls */
 543                 return -ENOIOCTLCMD;
 544
 545         switch (cmd) {
 546         case TCFLSH:
 547                 result = usb_control_msg(port->serial->dev,
 548                           usb_sndctrlpipe(port->serial->dev, 0),
 549                           SUSBCRequest_Misc,
 550                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 551                           SUSBCR_MSC_ResetAllQueues,
 552                           0,
 553                           NULL,
 554                           0,
 555                           KOBIL_TIMEOUT
 556                         );
 557
 558                 dev_dbg(&port->dev,
 559                         "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
 560                         __func__, result);
 561                 return (result < 0) ? -EIO: 0;
 562         default:
 563                 return -ENOIOCTLCMD;
 564         }
 565 }
 566
 567 module_usb_serial_driver(serial_drivers, id_table);
 568
 569 MODULE_AUTHOR(DRIVER_AUTHOR);
 570 MODULE_DESCRIPTION(DRIVER_DESC);
 571 MODULE_LICENSE("GPL");