Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver | |
3 | * | |
4 | * Copyright (C) 2001 REINER SCT | |
5 | * Author: Matthias Bruestle | |
6 | * | |
7 | * Contact: support@reiner-sct.com (see MAINTAINERS) | |
8 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
18 | * Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and | |
19 | * patience. | |
20 | * | |
21 | * In case of problems, please write to the contact e-mail address | |
22 | * mentioned above. | |
23 | * | |
24 | * Please note that later models of the cyberjack reader family are | |
25 | * supported by a libusb-based userspace device driver. | |
26 | * | |
27 | * Homepage: http://www.reiner-sct.de/support/treiber_cyberjack.php#linux | |
28 | */ | |
29 | ||
30 | ||
1da177e4 LT |
31 | #include <linux/kernel.h> |
32 | #include <linux/errno.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/tty.h> | |
36 | #include <linux/tty_driver.h> | |
37 | #include <linux/tty_flip.h> | |
38 | #include <linux/module.h> | |
39 | #include <linux/spinlock.h> | |
b9c52f15 | 40 | #include <linux/uaccess.h> |
1da177e4 | 41 | #include <linux/usb.h> |
a969888c | 42 | #include <linux/usb/serial.h> |
1da177e4 LT |
43 | |
44 | #define CYBERJACK_LOCAL_BUF_SIZE 32 | |
45 | ||
90ab5ee9 | 46 | static bool debug; |
1da177e4 LT |
47 | |
48 | /* | |
49 | * Version Information | |
50 | */ | |
51 | #define DRIVER_VERSION "v1.01" | |
52 | #define DRIVER_AUTHOR "Matthias Bruestle" | |
53 | #define DRIVER_DESC "REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver" | |
54 | ||
55 | ||
56 | #define CYBERJACK_VENDOR_ID 0x0C4B | |
57 | #define CYBERJACK_PRODUCT_ID 0x0100 | |
58 | ||
59 | /* Function prototypes */ | |
95da310e | 60 | static int cyberjack_startup(struct usb_serial *serial); |
f9c99bb8 AS |
61 | static void cyberjack_disconnect(struct usb_serial *serial); |
62 | static void cyberjack_release(struct usb_serial *serial); | |
95da310e | 63 | static int cyberjack_open(struct tty_struct *tty, |
a509a7e4 | 64 | struct usb_serial_port *port); |
335f8514 | 65 | static void cyberjack_close(struct usb_serial_port *port); |
95da310e AC |
66 | static int cyberjack_write(struct tty_struct *tty, |
67 | struct usb_serial_port *port, const unsigned char *buf, int count); | |
b9c52f15 | 68 | static int cyberjack_write_room(struct tty_struct *tty); |
95da310e AC |
69 | static void cyberjack_read_int_callback(struct urb *urb); |
70 | static void cyberjack_read_bulk_callback(struct urb *urb); | |
71 | static void cyberjack_write_bulk_callback(struct urb *urb); | |
1da177e4 | 72 | |
7d40d7e8 | 73 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
74 | { USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) }, |
75 | { } /* Terminating entry */ | |
76 | }; | |
77 | ||
b9c52f15 | 78 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
79 | |
80 | static struct usb_driver cyberjack_driver = { | |
1da177e4 LT |
81 | .name = "cyberjack", |
82 | .probe = usb_serial_probe, | |
83 | .disconnect = usb_serial_disconnect, | |
84 | .id_table = id_table, | |
ba9dc657 | 85 | .no_dynamic_id = 1, |
1da177e4 LT |
86 | }; |
87 | ||
ea65370d | 88 | static struct usb_serial_driver cyberjack_device = { |
18fcac35 GKH |
89 | .driver = { |
90 | .owner = THIS_MODULE, | |
269bda1c | 91 | .name = "cyberjack", |
18fcac35 | 92 | }, |
269bda1c | 93 | .description = "Reiner SCT Cyberjack USB card reader", |
d9b1b787 | 94 | .usb_driver = &cyberjack_driver, |
1da177e4 | 95 | .id_table = id_table, |
1da177e4 LT |
96 | .num_ports = 1, |
97 | .attach = cyberjack_startup, | |
f9c99bb8 AS |
98 | .disconnect = cyberjack_disconnect, |
99 | .release = cyberjack_release, | |
1da177e4 LT |
100 | .open = cyberjack_open, |
101 | .close = cyberjack_close, | |
102 | .write = cyberjack_write, | |
d9b1b787 | 103 | .write_room = cyberjack_write_room, |
1da177e4 LT |
104 | .read_int_callback = cyberjack_read_int_callback, |
105 | .read_bulk_callback = cyberjack_read_bulk_callback, | |
106 | .write_bulk_callback = cyberjack_write_bulk_callback, | |
107 | }; | |
108 | ||
109 | struct cyberjack_private { | |
110 | spinlock_t lock; /* Lock for SMP */ | |
111 | short rdtodo; /* Bytes still to read */ | |
112 | unsigned char wrbuf[5*64]; /* Buffer for collecting data to write */ | |
113 | short wrfilled; /* Overall data size we already got */ | |
114 | short wrsent; /* Data already sent */ | |
115 | }; | |
116 | ||
117 | /* do some startup allocations not currently performed by usb_serial_probe() */ | |
95da310e | 118 | static int cyberjack_startup(struct usb_serial *serial) |
1da177e4 LT |
119 | { |
120 | struct cyberjack_private *priv; | |
121 | int i; | |
122 | ||
441b62c1 | 123 | dbg("%s", __func__); |
1da177e4 LT |
124 | |
125 | /* allocate the private data structure */ | |
126 | priv = kmalloc(sizeof(struct cyberjack_private), GFP_KERNEL); | |
127 | if (!priv) | |
128 | return -ENOMEM; | |
129 | ||
130 | /* set initial values */ | |
131 | spin_lock_init(&priv->lock); | |
132 | priv->rdtodo = 0; | |
133 | priv->wrfilled = 0; | |
134 | priv->wrsent = 0; | |
135 | usb_set_serial_port_data(serial->port[0], priv); | |
136 | ||
137 | init_waitqueue_head(&serial->port[0]->write_wait); | |
138 | ||
139 | for (i = 0; i < serial->num_ports; ++i) { | |
140 | int result; | |
b9c52f15 | 141 | result = usb_submit_urb(serial->port[i]->interrupt_in_urb, |
1da177e4 LT |
142 | GFP_KERNEL); |
143 | if (result) | |
194343d9 GKH |
144 | dev_err(&serial->dev->dev, |
145 | "usb_submit_urb(read int) failed\n"); | |
441b62c1 | 146 | dbg("%s - usb_submit_urb(int urb)", __func__); |
1da177e4 LT |
147 | } |
148 | ||
b9c52f15 | 149 | return 0; |
1da177e4 LT |
150 | } |
151 | ||
f9c99bb8 | 152 | static void cyberjack_disconnect(struct usb_serial *serial) |
1da177e4 LT |
153 | { |
154 | int i; | |
b9c52f15 | 155 | |
441b62c1 | 156 | dbg("%s", __func__); |
1da177e4 | 157 | |
f9c99bb8 | 158 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 159 | usb_kill_urb(serial->port[i]->interrupt_in_urb); |
f9c99bb8 AS |
160 | } |
161 | ||
162 | static void cyberjack_release(struct usb_serial *serial) | |
163 | { | |
164 | int i; | |
165 | ||
166 | dbg("%s", __func__); | |
167 | ||
168 | for (i = 0; i < serial->num_ports; ++i) { | |
1da177e4 LT |
169 | /* My special items, the standard routines free my urbs */ |
170 | kfree(usb_get_serial_port_data(serial->port[i])); | |
1da177e4 LT |
171 | } |
172 | } | |
b9c52f15 | 173 | |
95da310e | 174 | static int cyberjack_open(struct tty_struct *tty, |
a509a7e4 | 175 | struct usb_serial_port *port) |
1da177e4 LT |
176 | { |
177 | struct cyberjack_private *priv; | |
178 | unsigned long flags; | |
179 | int result = 0; | |
180 | ||
441b62c1 | 181 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 182 | |
b9c52f15 | 183 | dbg("%s - usb_clear_halt", __func__); |
1da177e4 LT |
184 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); |
185 | ||
1da177e4 LT |
186 | priv = usb_get_serial_port_data(port); |
187 | spin_lock_irqsave(&priv->lock, flags); | |
188 | priv->rdtodo = 0; | |
189 | priv->wrfilled = 0; | |
190 | priv->wrsent = 0; | |
191 | spin_unlock_irqrestore(&priv->lock, flags); | |
192 | ||
193 | return result; | |
194 | } | |
195 | ||
335f8514 | 196 | static void cyberjack_close(struct usb_serial_port *port) |
1da177e4 | 197 | { |
441b62c1 | 198 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
199 | |
200 | if (port->serial->dev) { | |
201 | /* shutdown any bulk reads that might be going on */ | |
202 | usb_kill_urb(port->write_urb); | |
203 | usb_kill_urb(port->read_urb); | |
204 | } | |
205 | } | |
206 | ||
95da310e AC |
207 | static int cyberjack_write(struct tty_struct *tty, |
208 | struct usb_serial_port *port, const unsigned char *buf, int count) | |
1da177e4 | 209 | { |
1da177e4 LT |
210 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
211 | unsigned long flags; | |
212 | int result; | |
213 | int wrexpected; | |
214 | ||
441b62c1 | 215 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
216 | |
217 | if (count == 0) { | |
441b62c1 | 218 | dbg("%s - write request of 0 bytes", __func__); |
a5b6f60c | 219 | return 0; |
1da177e4 LT |
220 | } |
221 | ||
c1cac10c | 222 | if (!test_and_clear_bit(0, &port->write_urbs_free)) { |
441b62c1 | 223 | dbg("%s - already writing", __func__); |
507ca9bc | 224 | return 0; |
1da177e4 LT |
225 | } |
226 | ||
227 | spin_lock_irqsave(&priv->lock, flags); | |
228 | ||
b9c52f15 | 229 | if (count+priv->wrfilled > sizeof(priv->wrbuf)) { |
1da177e4 | 230 | /* To much data for buffer. Reset buffer. */ |
a5b6f60c | 231 | priv->wrfilled = 0; |
a5b6f60c | 232 | spin_unlock_irqrestore(&priv->lock, flags); |
c1cac10c | 233 | set_bit(0, &port->write_urbs_free); |
a5b6f60c | 234 | return 0; |
1da177e4 LT |
235 | } |
236 | ||
237 | /* Copy data */ | |
b9c52f15 | 238 | memcpy(priv->wrbuf + priv->wrfilled, buf, count); |
1da177e4 | 239 | |
441b62c1 | 240 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
b9c52f15 | 241 | priv->wrbuf + priv->wrfilled); |
1da177e4 LT |
242 | priv->wrfilled += count; |
243 | ||
b9c52f15 | 244 | if (priv->wrfilled >= 3) { |
1da177e4 | 245 | wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; |
441b62c1 | 246 | dbg("%s - expected data: %d", __func__, wrexpected); |
b9c52f15 | 247 | } else |
1da177e4 | 248 | wrexpected = sizeof(priv->wrbuf); |
1da177e4 | 249 | |
b9c52f15 | 250 | if (priv->wrfilled >= wrexpected) { |
1da177e4 LT |
251 | /* We have enough data to begin transmission */ |
252 | int length; | |
253 | ||
441b62c1 | 254 | dbg("%s - transmitting data (frame 1)", __func__); |
b9c52f15 AC |
255 | length = (wrexpected > port->bulk_out_size) ? |
256 | port->bulk_out_size : wrexpected; | |
1da177e4 | 257 | |
b9c52f15 AC |
258 | memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length); |
259 | priv->wrsent = length; | |
1da177e4 LT |
260 | |
261 | /* set up our urb */ | |
fd11961a | 262 | port->write_urb->transfer_buffer_length = length; |
1da177e4 LT |
263 | |
264 | /* send the data out the bulk port */ | |
265 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
266 | if (result) { | |
194343d9 GKH |
267 | dev_err(&port->dev, |
268 | "%s - failed submitting write urb, error %d", | |
269 | __func__, result); | |
1da177e4 | 270 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
271 | priv->wrfilled = 0; |
272 | priv->wrsent = 0; | |
1da177e4 | 273 | spin_unlock_irqrestore(&priv->lock, flags); |
c1cac10c | 274 | set_bit(0, &port->write_urbs_free); |
1da177e4 LT |
275 | return 0; |
276 | } | |
277 | ||
b9c52f15 AC |
278 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
279 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 | 280 | |
b9c52f15 | 281 | if (priv->wrsent >= priv->wrfilled) { |
441b62c1 | 282 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 283 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
284 | priv->wrfilled = 0; |
285 | priv->wrsent = 0; | |
1da177e4 LT |
286 | } |
287 | } | |
288 | ||
289 | spin_unlock_irqrestore(&priv->lock, flags); | |
290 | ||
b9c52f15 AC |
291 | return count; |
292 | } | |
1da177e4 | 293 | |
95da310e | 294 | static int cyberjack_write_room(struct tty_struct *tty) |
1da177e4 | 295 | { |
a5b6f60c | 296 | /* FIXME: .... */ |
1da177e4 LT |
297 | return CYBERJACK_LOCAL_BUF_SIZE; |
298 | } | |
299 | ||
95da310e | 300 | static void cyberjack_read_int_callback(struct urb *urb) |
1da177e4 | 301 | { |
cdc97792 | 302 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
303 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
304 | unsigned char *data = urb->transfer_buffer; | |
7dcc85cd | 305 | int status = urb->status; |
1da177e4 LT |
306 | int result; |
307 | ||
441b62c1 | 308 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
309 | |
310 | /* the urb might have been killed. */ | |
7dcc85cd | 311 | if (status) |
1da177e4 LT |
312 | return; |
313 | ||
b9c52f15 AC |
314 | usb_serial_debug_data(debug, &port->dev, __func__, |
315 | urb->actual_length, data); | |
1da177e4 LT |
316 | |
317 | /* React only to interrupts signaling a bulk_in transfer */ | |
b9c52f15 | 318 | if (urb->actual_length == 4 && data[0] == 0x01) { |
1da177e4 | 319 | short old_rdtodo; |
1da177e4 LT |
320 | |
321 | /* This is a announcement of coming bulk_ins. */ | |
322 | unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3; | |
323 | ||
324 | spin_lock(&priv->lock); | |
325 | ||
326 | old_rdtodo = priv->rdtodo; | |
327 | ||
b9c52f15 AC |
328 | if (old_rdtodo + size < old_rdtodo) { |
329 | dbg("To many bulk_in urbs to do."); | |
1da177e4 LT |
330 | spin_unlock(&priv->lock); |
331 | goto resubmit; | |
332 | } | |
333 | ||
334 | /* "+=" is probably more fault tollerant than "=" */ | |
335 | priv->rdtodo += size; | |
336 | ||
441b62c1 | 337 | dbg("%s - rdtodo: %d", __func__, priv->rdtodo); |
1da177e4 LT |
338 | |
339 | spin_unlock(&priv->lock); | |
340 | ||
b9c52f15 | 341 | if (!old_rdtodo) { |
1da177e4 | 342 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
b9c52f15 | 343 | if (result) |
194343d9 GKH |
344 | dev_err(&port->dev, "%s - failed resubmitting " |
345 | "read urb, error %d\n", | |
346 | __func__, result); | |
441b62c1 | 347 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
348 | } |
349 | } | |
350 | ||
351 | resubmit: | |
1da177e4 LT |
352 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); |
353 | if (result) | |
194343d9 | 354 | dev_err(&port->dev, "usb_submit_urb(read int) failed\n"); |
441b62c1 | 355 | dbg("%s - usb_submit_urb(int urb)", __func__); |
1da177e4 LT |
356 | } |
357 | ||
95da310e | 358 | static void cyberjack_read_bulk_callback(struct urb *urb) |
1da177e4 | 359 | { |
cdc97792 | 360 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
361 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
362 | struct tty_struct *tty; | |
363 | unsigned char *data = urb->transfer_buffer; | |
364 | short todo; | |
1da177e4 | 365 | int result; |
7dcc85cd | 366 | int status = urb->status; |
1da177e4 | 367 | |
441b62c1 | 368 | dbg("%s - port %d", __func__, port->number); |
7dcc85cd | 369 | |
b9c52f15 AC |
370 | usb_serial_debug_data(debug, &port->dev, __func__, |
371 | urb->actual_length, data); | |
7dcc85cd GKH |
372 | if (status) { |
373 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 374 | __func__, status); |
1da177e4 LT |
375 | return; |
376 | } | |
377 | ||
4a90f09b | 378 | tty = tty_port_tty_get(&port->port); |
1da177e4 | 379 | if (!tty) { |
759f3634 | 380 | dbg("%s - ignoring since device not open", __func__); |
1da177e4 LT |
381 | return; |
382 | } | |
383 | if (urb->actual_length) { | |
33f0f88f | 384 | tty_insert_flip_string(tty, data, urb->actual_length); |
b9c52f15 | 385 | tty_flip_buffer_push(tty); |
1da177e4 | 386 | } |
4a90f09b | 387 | tty_kref_put(tty); |
1da177e4 LT |
388 | |
389 | spin_lock(&priv->lock); | |
390 | ||
391 | /* Reduce urbs to do by one. */ | |
b9c52f15 | 392 | priv->rdtodo -= urb->actual_length; |
1da177e4 | 393 | /* Just to be sure */ |
b9c52f15 AC |
394 | if (priv->rdtodo < 0) |
395 | priv->rdtodo = 0; | |
1da177e4 LT |
396 | todo = priv->rdtodo; |
397 | ||
398 | spin_unlock(&priv->lock); | |
399 | ||
441b62c1 | 400 | dbg("%s - rdtodo: %d", __func__, todo); |
1da177e4 LT |
401 | |
402 | /* Continue to read if we have still urbs to do. */ | |
b9c52f15 | 403 | if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) { |
1da177e4 LT |
404 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
405 | if (result) | |
194343d9 GKH |
406 | dev_err(&port->dev, "%s - failed resubmitting read " |
407 | "urb, error %d\n", __func__, result); | |
441b62c1 | 408 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
409 | } |
410 | } | |
411 | ||
95da310e | 412 | static void cyberjack_write_bulk_callback(struct urb *urb) |
1da177e4 | 413 | { |
cdc97792 | 414 | struct usb_serial_port *port = urb->context; |
1da177e4 | 415 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
7dcc85cd | 416 | int status = urb->status; |
1da177e4 | 417 | |
441b62c1 | 418 | dbg("%s - port %d", __func__, port->number); |
507ca9bc | 419 | |
c1cac10c | 420 | set_bit(0, &port->write_urbs_free); |
7dcc85cd GKH |
421 | if (status) { |
422 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 423 | __func__, status); |
1da177e4 LT |
424 | return; |
425 | } | |
426 | ||
427 | spin_lock(&priv->lock); | |
428 | ||
429 | /* only do something if we have more data to send */ | |
b9c52f15 | 430 | if (priv->wrfilled) { |
1da177e4 LT |
431 | int length, blksize, result; |
432 | ||
441b62c1 | 433 | dbg("%s - transmitting data (frame n)", __func__); |
1da177e4 LT |
434 | |
435 | length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ? | |
436 | port->bulk_out_size : (priv->wrfilled - priv->wrsent); | |
437 | ||
b9c52f15 AC |
438 | memcpy(port->write_urb->transfer_buffer, |
439 | priv->wrbuf + priv->wrsent, length); | |
440 | priv->wrsent += length; | |
1da177e4 LT |
441 | |
442 | /* set up our urb */ | |
fd11961a | 443 | port->write_urb->transfer_buffer_length = length; |
1da177e4 LT |
444 | |
445 | /* send the data out the bulk port */ | |
446 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
447 | if (result) { | |
194343d9 GKH |
448 | dev_err(&port->dev, |
449 | "%s - failed submitting write urb, error %d\n", | |
450 | __func__, result); | |
1da177e4 | 451 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
452 | priv->wrfilled = 0; |
453 | priv->wrsent = 0; | |
1da177e4 LT |
454 | goto exit; |
455 | } | |
456 | ||
b9c52f15 AC |
457 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
458 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 LT |
459 | |
460 | blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; | |
461 | ||
b9c52f15 AC |
462 | if (priv->wrsent >= priv->wrfilled || |
463 | priv->wrsent >= blksize) { | |
441b62c1 | 464 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 465 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
466 | priv->wrfilled = 0; |
467 | priv->wrsent = 0; | |
1da177e4 LT |
468 | } |
469 | } | |
470 | ||
471 | exit: | |
472 | spin_unlock(&priv->lock); | |
cf2c7481 | 473 | usb_serial_port_softint(port); |
1da177e4 LT |
474 | } |
475 | ||
b9c52f15 | 476 | static int __init cyberjack_init(void) |
1da177e4 LT |
477 | { |
478 | int retval; | |
479 | retval = usb_serial_register(&cyberjack_device); | |
480 | if (retval) | |
481 | goto failed_usb_serial_register; | |
482 | retval = usb_register(&cyberjack_driver); | |
b9c52f15 | 483 | if (retval) |
1da177e4 LT |
484 | goto failed_usb_register; |
485 | ||
c197a8db GKH |
486 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION " " |
487 | DRIVER_AUTHOR "\n"); | |
488 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); | |
1da177e4 LT |
489 | |
490 | return 0; | |
491 | failed_usb_register: | |
492 | usb_serial_deregister(&cyberjack_device); | |
493 | failed_usb_serial_register: | |
494 | return retval; | |
495 | } | |
496 | ||
b9c52f15 | 497 | static void __exit cyberjack_exit(void) |
1da177e4 | 498 | { |
b9c52f15 AC |
499 | usb_deregister(&cyberjack_driver); |
500 | usb_serial_deregister(&cyberjack_device); | |
1da177e4 LT |
501 | } |
502 | ||
503 | module_init(cyberjack_init); | |
504 | module_exit(cyberjack_exit); | |
505 | ||
b9c52f15 AC |
506 | MODULE_AUTHOR(DRIVER_AUTHOR); |
507 | MODULE_DESCRIPTION(DRIVER_DESC); | |
508 | MODULE_VERSION(DRIVER_VERSION); | |
1da177e4 LT |
509 | MODULE_LICENSE("GPL"); |
510 | ||
511 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
512 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |