2 * KOBIL USB Smart Card Terminal Driver
4 * Copyright (C) 2002 KOBIL Systems GmbH
5 * Author: Thomas Wahrenbruch
7 * Contact: linuxusb@kobil.de
9 * This program is largely derived from work by the linux-usb group
10 * and associated source files. Please see the usb/serial files for
11 * individual credits and copyrights.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
21 * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
22 * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
25 * Add support for KAAN SIM
35 #include <linux/config.h>
36 #include <linux/kernel.h>
37 #include <linux/errno.h>
38 #include <linux/init.h>
39 #include <linux/slab.h>
40 #include <linux/tty.h>
41 #include <linux/tty_driver.h>
42 #include <linux/tty_flip.h>
43 #include <linux/module.h>
44 #include <linux/spinlock.h>
45 #include <asm/uaccess.h>
46 #include <linux/usb.h>
47 #include <linux/ioctl.h>
50 #include "kobil_sct.h"
51 //#include "../core/usb-debug.c"
53 #ifdef CONFIG_USB_SERIAL_DEBUG
59 #include "usb-serial.h"
61 /* Version Information */
62 #define DRIVER_VERSION "28/05/2003"
63 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
64 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
66 #define KOBIL_VENDOR_ID 0x0D46
67 #define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
68 #define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
69 #define KOBIL_USBTWIN_PRODUCT_ID 0x0078
70 #define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
72 #define KOBIL_TIMEOUT 500
73 #define KOBIL_BUF_LENGTH 300
76 /* Function prototypes */
77 static int kobil_startup (struct usb_serial *serial);
78 static void kobil_shutdown (struct usb_serial *serial);
79 static int kobil_open (struct usb_serial_port *port, struct file *filp);
80 static void kobil_close (struct usb_serial_port *port, struct file *filp);
81 static int kobil_write (struct usb_serial_port *port, int from_user,
82 const unsigned char *buf, int count);
83 static int kobil_write_room(struct usb_serial_port *port);
84 static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
85 unsigned int cmd, unsigned long arg);
86 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file);
87 static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
88 unsigned int set, unsigned int clear);
89 static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs );
90 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs );
93 static struct usb_device_id id_table [] = {
94 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
95 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
96 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
97 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
98 { } /* Terminating entry */
102 MODULE_DEVICE_TABLE (usb, id_table);
104 static struct usb_driver kobil_driver = {
105 .owner = THIS_MODULE,
107 .probe = usb_serial_probe,
108 .disconnect = usb_serial_disconnect,
109 .id_table = id_table,
113 struct usb_serial_device_type kobil_device = {
114 .owner = THIS_MODULE,
115 .name = "KOBIL USB smart card terminal",
116 .id_table = id_table,
117 .num_interrupt_in = NUM_DONT_CARE,
121 .attach = kobil_startup,
122 .shutdown = kobil_shutdown,
123 .ioctl = kobil_ioctl,
124 .tiocmget = kobil_tiocmget,
125 .tiocmset = kobil_tiocmset,
127 .close = kobil_close,
128 .write = kobil_write,
129 .write_room = kobil_write_room,
130 .read_int_callback = kobil_read_int_callback,
134 struct kobil_private {
135 int write_int_endpoint_address;
136 int read_int_endpoint_address;
137 unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
138 int filled; // index of the last char in buf
139 int cur_pos; // index of the next char to send in buf
142 struct termios internal_termios;
146 static int kobil_startup (struct usb_serial *serial)
149 struct kobil_private *priv;
150 struct usb_device *pdev;
151 struct usb_host_config *actconfig;
152 struct usb_interface *interface;
153 struct usb_host_interface *altsetting;
154 struct usb_host_endpoint *endpoint;
156 priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
163 priv->device_type = serial->product;
164 priv->line_state = 0;
166 switch (priv->device_type){
167 case KOBIL_ADAPTER_B_PRODUCT_ID:
168 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
170 case KOBIL_ADAPTER_K_PRODUCT_ID:
171 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
173 case KOBIL_USBTWIN_PRODUCT_ID:
174 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
176 case KOBIL_KAAN_SIM_PRODUCT_ID:
177 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
180 usb_set_serial_port_data(serial->port[0], priv);
182 // search for the necessary endpoints
184 actconfig = pdev->actconfig;
185 interface = actconfig->interface[0];
186 altsetting = interface->altsetting;
187 endpoint = altsetting->endpoint;
189 for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
190 endpoint = &altsetting->endpoint[i];
191 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
192 ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
193 dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
194 priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
196 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
197 ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
198 dbg("%s Found interrupt in endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
199 priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
206 static void kobil_shutdown (struct usb_serial *serial)
209 dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
211 for (i=0; i < serial->num_ports; ++i) {
212 while (serial->port[i]->open_count > 0) {
213 kobil_close (serial->port[i], NULL);
215 kfree(usb_get_serial_port_data(serial->port[i]));
216 usb_set_serial_port_data(serial->port[i], NULL);
221 static int kobil_open (struct usb_serial_port *port, struct file *filp)
224 struct kobil_private *priv;
225 unsigned char *transfer_buffer;
226 int transfer_buffer_length = 8;
227 int write_urb_transfer_buffer_length = 8;
229 dbg("%s - port %d", __FUNCTION__, port->number);
230 priv = usb_get_serial_port_data(port);
231 priv->line_state = 0;
233 if (port_paranoia_check (port, __FUNCTION__))
236 // someone sets the dev to 0 if the close method has been called
237 port->interrupt_in_urb->dev = port->serial->dev;
240 /* force low_latency on so that our tty_push actually forces
241 * the data through, otherwise it is scheduled, and with high
242 * data rates (like with OHCI) data can get lost.
244 port->tty->low_latency = 1;
246 // without this, every push_tty_char is echoed :-(
247 port->tty->termios->c_lflag = 0;
248 port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
249 port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
250 port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
252 // set up internal termios structure
253 priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
254 priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
255 priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
256 priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
258 for (i=0; i<NCCS; i++) {
259 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
262 // allocate memory for transfer buffer
263 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
264 if (! transfer_buffer) {
267 memset(transfer_buffer, 0, transfer_buffer_length);
270 // allocate write_urb
271 if (!port->write_urb) {
272 dbg("%s - port %d Allocating port->write_urb", __FUNCTION__, port->number);
273 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
274 if (!port->write_urb) {
275 dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
276 kfree(transfer_buffer);
281 // allocate memory for write_urb transfer buffer
282 port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
283 if (! port->write_urb->transfer_buffer) {
284 kfree(transfer_buffer);
285 usb_free_urb(port->write_urb);
286 port->write_urb = NULL;
290 // get hardware version
291 result = usb_control_msg( port->serial->dev,
292 usb_rcvctrlpipe(port->serial->dev, 0 ),
293 SUSBCRequest_GetMisc,
294 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
295 SUSBCR_MSC_GetHWVersion,
298 transfer_buffer_length,
301 dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
302 dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
304 // get firmware version
305 result = usb_control_msg( port->serial->dev,
306 usb_rcvctrlpipe(port->serial->dev, 0 ),
307 SUSBCRequest_GetMisc,
308 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
309 SUSBCR_MSC_GetFWVersion,
312 transfer_buffer_length,
315 dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
316 dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
318 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
319 // Setting Baudrate, Parity and Stopbits
320 result = usb_control_msg( port->serial->dev,
321 usb_rcvctrlpipe(port->serial->dev, 0 ),
322 SUSBCRequest_SetBaudRateParityAndStopBits,
323 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
324 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
330 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
333 result = usb_control_msg( port->serial->dev,
334 usb_rcvctrlpipe(port->serial->dev, 0 ),
336 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
337 SUSBCR_MSC_ResetAllQueues,
343 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
346 kfree(transfer_buffer);
351 static void kobil_close (struct usb_serial_port *port, struct file *filp)
353 dbg("%s - port %d", __FUNCTION__, port->number);
355 if (port->write_urb){
356 usb_unlink_urb( port->write_urb );
357 usb_free_urb( port->write_urb );
360 if (port->interrupt_in_urb){
361 usb_unlink_urb (port->interrupt_in_urb);
366 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
370 struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
371 struct tty_struct *tty;
372 unsigned char *data = purb->transfer_buffer;
375 dbg("%s - port %d", __FUNCTION__, port->number);
378 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
383 if (purb->actual_length) {
387 dbg_data = (unsigned char *) kmalloc((3 * purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
391 memset(dbg_data, 0, (3 * purb->actual_length + 10));
392 for (i = 0; i < purb->actual_length; i++) {
393 sprintf(dbg_data +3*i, "%02X ", data[i]);
395 dbg(" <-- %s", dbg_data );
400 for (i = 0; i < purb->actual_length; ++i) {
401 // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
402 if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
403 tty_flip_buffer_push(tty);
405 // this doesn't actually push the data through unless tty->low_latency is set
406 tty_insert_flip_char(tty, data[i], 0);
408 tty_flip_buffer_push(tty);
411 // someone sets the dev to 0 if the close method has been called
412 port->interrupt_in_urb->dev = port->serial->dev;
414 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
415 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
419 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
424 static int kobil_write (struct usb_serial_port *port, int from_user,
425 const unsigned char *buf, int count)
430 struct kobil_private * priv;
433 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
437 priv = usb_get_serial_port_data(port);
439 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
440 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
444 // Copy data to buffer
446 if (copy_from_user(priv->buf + priv->filled, buf, count)) {
450 memcpy (priv->buf + priv->filled, buf, count);
453 usb_serial_debug_data (__FILE__, __FUNCTION__, count, priv->buf + priv->filled);
455 priv->filled = priv->filled + count;
458 // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
459 if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
460 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
462 todo = priv->filled - priv->cur_pos;
465 // max 8 byte in one urb (endpoint size)
466 length = (todo < 8) ? todo : 8;
467 // copy data to transfer buffer
468 memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
470 usb_fill_bulk_urb( port->write_urb,
472 usb_sndbulkpipe( port->serial->dev, priv->write_int_endpoint_address),
473 port->write_urb->transfer_buffer,
475 kobil_write_callback,
479 priv->cur_pos = priv->cur_pos + length;
480 result = usb_submit_urb( port->write_urb, GFP_ATOMIC );
481 dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
482 todo = priv->filled - priv->cur_pos;
486 set_current_state(TASK_UNINTERRUPTIBLE);
487 schedule_timeout(24 * HZ / 1000);
495 // someone sets the dev to 0 if the close method has been called
496 port->interrupt_in_urb->dev = port->serial->dev;
499 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
500 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
506 static int kobil_write_room (struct usb_serial_port *port)
508 //dbg("%s - port %d", __FUNCTION__, port->number);
513 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
515 struct kobil_private * priv;
517 unsigned char *transfer_buffer;
518 int transfer_buffer_length = 8;
520 priv = usb_get_serial_port_data(port);
521 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
522 // This device doesn't support ioctl calls
526 // allocate memory for transfer buffer
527 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
528 if (!transfer_buffer) {
531 memset(transfer_buffer, 0, transfer_buffer_length);
533 result = usb_control_msg( port->serial->dev,
534 usb_rcvctrlpipe(port->serial->dev, 0 ),
535 SUSBCRequest_GetStatusLineState,
536 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
540 transfer_buffer_length,
543 dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
544 __FUNCTION__, port->number, result, transfer_buffer[0]);
546 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
547 priv->line_state |= TIOCM_DSR;
549 priv->line_state &= ~TIOCM_DSR;
552 kfree(transfer_buffer);
553 return priv->line_state;
556 static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
557 unsigned int set, unsigned int clear)
559 struct kobil_private * priv;
563 unsigned char *transfer_buffer;
564 int transfer_buffer_length = 8;
566 priv = usb_get_serial_port_data(port);
567 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
568 // This device doesn't support ioctl calls
572 // allocate memory for transfer buffer
573 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
574 if (! transfer_buffer) {
577 memset(transfer_buffer, 0, transfer_buffer_length);
583 if (clear & TIOCM_RTS)
585 if (clear & TIOCM_DTR)
588 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
590 dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
592 dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
593 result = usb_control_msg( port->serial->dev,
594 usb_rcvctrlpipe(port->serial->dev, 0 ),
595 SUSBCRequest_SetStatusLinesOrQueues,
596 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
597 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
604 dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
606 dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
607 result = usb_control_msg( port->serial->dev,
608 usb_rcvctrlpipe(port->serial->dev, 0 ),
609 SUSBCRequest_SetStatusLinesOrQueues,
610 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
611 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
617 dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
618 kfree(transfer_buffer);
619 return (result < 0) ? result : 0;
623 static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
624 unsigned int cmd, unsigned long arg)
626 struct kobil_private * priv;
628 unsigned short urb_val = 0;
629 unsigned char *transfer_buffer;
630 int transfer_buffer_length = 8;
633 priv = usb_get_serial_port_data(port);
634 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
635 // This device doesn't support ioctl calls
640 case TCGETS: // 0x5401
641 result = verify_area(VERIFY_WRITE, (void *)arg, sizeof(struct termios));
643 dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
646 if (kernel_termios_to_user_termios((struct termios *)arg,
647 &priv->internal_termios))
651 case TCSETS: // 0x5402
652 if (!(port->tty->termios)) {
653 dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
656 result = verify_area(VERIFY_READ, (void *)arg, sizeof(struct termios));
658 dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
661 if (user_termios_to_kernel_termios(&priv->internal_termios,
662 (struct termios *)arg))
665 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
669 memset(settings, 0, 50);
671 switch (priv->internal_termios.c_cflag & CBAUD) {
673 urb_val = SUSBCR_SBR_1200;
674 strcat(settings, "1200 ");
678 urb_val = SUSBCR_SBR_9600;
679 strcat(settings, "9600 ");
683 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
684 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
686 if (priv->internal_termios.c_cflag & PARENB) {
687 if (priv->internal_termios.c_cflag & PARODD) {
688 urb_val |= SUSBCR_SPASB_OddParity;
689 strcat(settings, "Odd Parity");
691 urb_val |= SUSBCR_SPASB_EvenParity;
692 strcat(settings, "Even Parity");
695 urb_val |= SUSBCR_SPASB_NoParity;
696 strcat(settings, "No Parity");
698 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
700 result = usb_control_msg( port->serial->dev,
701 usb_rcvctrlpipe(port->serial->dev, 0 ),
702 SUSBCRequest_SetBaudRateParityAndStopBits,
703 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
711 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
715 case TCFLSH: // 0x540B
716 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
717 if (! transfer_buffer) {
721 result = usb_control_msg( port->serial->dev,
722 usb_rcvctrlpipe(port->serial->dev, 0 ),
724 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
725 SUSBCR_MSC_ResetAllQueues,
727 NULL,//transfer_buffer,
732 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
734 kfree(transfer_buffer);
735 return ((result < 0) ? -EFAULT : 0);
742 static int __init kobil_init (void)
745 retval = usb_serial_register(&kobil_device);
747 goto failed_usb_serial_register;
748 retval = usb_register(&kobil_driver);
750 goto failed_usb_register;
752 info(DRIVER_VERSION " " DRIVER_AUTHOR);
757 usb_serial_deregister(&kobil_device);
758 failed_usb_serial_register:
763 static void __exit kobil_exit (void)
765 usb_deregister (&kobil_driver);
766 usb_serial_deregister (&kobil_device);
769 module_init(kobil_init);
770 module_exit(kobil_exit);
772 MODULE_AUTHOR( DRIVER_AUTHOR );
773 MODULE_DESCRIPTION( DRIVER_DESC );
774 MODULE_LICENSE( "GPL" );
776 MODULE_PARM(debug, "i");
777 MODULE_PARM_DESC(debug, "Debug enabled or not");