Commit | Line | Data |
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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 | ||
46 | static int debug; | |
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 AC |
60 | static int cyberjack_startup(struct usb_serial *serial); |
61 | static void cyberjack_shutdown(struct usb_serial *serial); | |
62 | static int cyberjack_open(struct tty_struct *tty, | |
63 | struct usb_serial_port *port, struct file *filp); | |
64 | static void cyberjack_close(struct tty_struct *tty, | |
65 | struct usb_serial_port *port, struct file *filp); | |
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 LT |
72 | |
73 | static struct usb_device_id id_table [] = { | |
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, | |
98 | .shutdown = cyberjack_shutdown, | |
99 | .open = cyberjack_open, | |
100 | .close = cyberjack_close, | |
101 | .write = cyberjack_write, | |
d9b1b787 | 102 | .write_room = cyberjack_write_room, |
1da177e4 LT |
103 | .read_int_callback = cyberjack_read_int_callback, |
104 | .read_bulk_callback = cyberjack_read_bulk_callback, | |
105 | .write_bulk_callback = cyberjack_write_bulk_callback, | |
106 | }; | |
107 | ||
108 | struct cyberjack_private { | |
109 | spinlock_t lock; /* Lock for SMP */ | |
110 | short rdtodo; /* Bytes still to read */ | |
111 | unsigned char wrbuf[5*64]; /* Buffer for collecting data to write */ | |
112 | short wrfilled; /* Overall data size we already got */ | |
113 | short wrsent; /* Data already sent */ | |
114 | }; | |
115 | ||
116 | /* do some startup allocations not currently performed by usb_serial_probe() */ | |
95da310e | 117 | static int cyberjack_startup(struct usb_serial *serial) |
1da177e4 LT |
118 | { |
119 | struct cyberjack_private *priv; | |
120 | int i; | |
121 | ||
441b62c1 | 122 | dbg("%s", __func__); |
1da177e4 LT |
123 | |
124 | /* allocate the private data structure */ | |
125 | priv = kmalloc(sizeof(struct cyberjack_private), GFP_KERNEL); | |
126 | if (!priv) | |
127 | return -ENOMEM; | |
128 | ||
129 | /* set initial values */ | |
130 | spin_lock_init(&priv->lock); | |
131 | priv->rdtodo = 0; | |
132 | priv->wrfilled = 0; | |
133 | priv->wrsent = 0; | |
134 | usb_set_serial_port_data(serial->port[0], priv); | |
135 | ||
136 | init_waitqueue_head(&serial->port[0]->write_wait); | |
137 | ||
138 | for (i = 0; i < serial->num_ports; ++i) { | |
139 | int result; | |
140 | serial->port[i]->interrupt_in_urb->dev = serial->dev; | |
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 | ||
95da310e | 152 | static void cyberjack_shutdown(struct usb_serial *serial) |
1da177e4 LT |
153 | { |
154 | int i; | |
b9c52f15 | 155 | |
441b62c1 | 156 | dbg("%s", __func__); |
1da177e4 | 157 | |
a5b6f60c | 158 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 LT |
159 | usb_kill_urb(serial->port[i]->interrupt_in_urb); |
160 | /* My special items, the standard routines free my urbs */ | |
161 | kfree(usb_get_serial_port_data(serial->port[i])); | |
162 | usb_set_serial_port_data(serial->port[i], NULL); | |
163 | } | |
164 | } | |
b9c52f15 | 165 | |
95da310e AC |
166 | static int cyberjack_open(struct tty_struct *tty, |
167 | struct usb_serial_port *port, struct file *filp) | |
1da177e4 LT |
168 | { |
169 | struct cyberjack_private *priv; | |
170 | unsigned long flags; | |
171 | int result = 0; | |
172 | ||
441b62c1 | 173 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 174 | |
b9c52f15 | 175 | dbg("%s - usb_clear_halt", __func__); |
1da177e4 LT |
176 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); |
177 | ||
1da177e4 LT |
178 | priv = usb_get_serial_port_data(port); |
179 | spin_lock_irqsave(&priv->lock, flags); | |
180 | priv->rdtodo = 0; | |
181 | priv->wrfilled = 0; | |
182 | priv->wrsent = 0; | |
183 | spin_unlock_irqrestore(&priv->lock, flags); | |
184 | ||
185 | return result; | |
186 | } | |
187 | ||
95da310e AC |
188 | static void cyberjack_close(struct tty_struct *tty, |
189 | struct usb_serial_port *port, struct file *filp) | |
1da177e4 | 190 | { |
441b62c1 | 191 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
192 | |
193 | if (port->serial->dev) { | |
194 | /* shutdown any bulk reads that might be going on */ | |
195 | usb_kill_urb(port->write_urb); | |
196 | usb_kill_urb(port->read_urb); | |
197 | } | |
198 | } | |
199 | ||
95da310e AC |
200 | static int cyberjack_write(struct tty_struct *tty, |
201 | struct usb_serial_port *port, const unsigned char *buf, int count) | |
1da177e4 LT |
202 | { |
203 | struct usb_serial *serial = port->serial; | |
204 | struct cyberjack_private *priv = usb_get_serial_port_data(port); | |
205 | unsigned long flags; | |
206 | int result; | |
207 | int wrexpected; | |
208 | ||
441b62c1 | 209 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
210 | |
211 | if (count == 0) { | |
441b62c1 | 212 | dbg("%s - write request of 0 bytes", __func__); |
a5b6f60c | 213 | return 0; |
1da177e4 LT |
214 | } |
215 | ||
e81ee637 | 216 | spin_lock_bh(&port->lock); |
507ca9bc | 217 | if (port->write_urb_busy) { |
e81ee637 | 218 | spin_unlock_bh(&port->lock); |
441b62c1 | 219 | dbg("%s - already writing", __func__); |
507ca9bc | 220 | return 0; |
1da177e4 | 221 | } |
507ca9bc | 222 | port->write_urb_busy = 1; |
e81ee637 | 223 | spin_unlock_bh(&port->lock); |
1da177e4 LT |
224 | |
225 | spin_lock_irqsave(&priv->lock, flags); | |
226 | ||
b9c52f15 | 227 | if (count+priv->wrfilled > sizeof(priv->wrbuf)) { |
1da177e4 | 228 | /* To much data for buffer. Reset buffer. */ |
a5b6f60c | 229 | priv->wrfilled = 0; |
507ca9bc | 230 | port->write_urb_busy = 0; |
a5b6f60c AC |
231 | spin_unlock_irqrestore(&priv->lock, flags); |
232 | return 0; | |
1da177e4 LT |
233 | } |
234 | ||
235 | /* Copy data */ | |
b9c52f15 | 236 | memcpy(priv->wrbuf + priv->wrfilled, buf, count); |
1da177e4 | 237 | |
441b62c1 | 238 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
b9c52f15 | 239 | priv->wrbuf + priv->wrfilled); |
1da177e4 LT |
240 | priv->wrfilled += count; |
241 | ||
b9c52f15 | 242 | if (priv->wrfilled >= 3) { |
1da177e4 | 243 | wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; |
441b62c1 | 244 | dbg("%s - expected data: %d", __func__, wrexpected); |
b9c52f15 | 245 | } else |
1da177e4 | 246 | wrexpected = sizeof(priv->wrbuf); |
1da177e4 | 247 | |
b9c52f15 | 248 | if (priv->wrfilled >= wrexpected) { |
1da177e4 LT |
249 | /* We have enough data to begin transmission */ |
250 | int length; | |
251 | ||
441b62c1 | 252 | dbg("%s - transmitting data (frame 1)", __func__); |
b9c52f15 AC |
253 | length = (wrexpected > port->bulk_out_size) ? |
254 | port->bulk_out_size : wrexpected; | |
1da177e4 | 255 | |
b9c52f15 AC |
256 | memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length); |
257 | priv->wrsent = length; | |
1da177e4 LT |
258 | |
259 | /* set up our urb */ | |
b9c52f15 | 260 | usb_fill_bulk_urb(port->write_urb, serial->dev, |
1da177e4 LT |
261 | usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), |
262 | port->write_urb->transfer_buffer, length, | |
b9c52f15 AC |
263 | ((serial->type->write_bulk_callback) ? |
264 | serial->type->write_bulk_callback : | |
265 | cyberjack_write_bulk_callback), | |
1da177e4 LT |
266 | port); |
267 | ||
268 | /* send the data out the bulk port */ | |
269 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
270 | if (result) { | |
194343d9 GKH |
271 | dev_err(&port->dev, |
272 | "%s - failed submitting write urb, error %d", | |
273 | __func__, result); | |
1da177e4 | 274 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
275 | priv->wrfilled = 0; |
276 | priv->wrsent = 0; | |
1da177e4 | 277 | spin_unlock_irqrestore(&priv->lock, flags); |
507ca9bc | 278 | port->write_urb_busy = 0; |
1da177e4 LT |
279 | return 0; |
280 | } | |
281 | ||
b9c52f15 AC |
282 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
283 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 | 284 | |
b9c52f15 | 285 | if (priv->wrsent >= priv->wrfilled) { |
441b62c1 | 286 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 287 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
288 | priv->wrfilled = 0; |
289 | priv->wrsent = 0; | |
1da177e4 LT |
290 | } |
291 | } | |
292 | ||
293 | spin_unlock_irqrestore(&priv->lock, flags); | |
294 | ||
b9c52f15 AC |
295 | return count; |
296 | } | |
1da177e4 | 297 | |
95da310e | 298 | static int cyberjack_write_room(struct tty_struct *tty) |
1da177e4 | 299 | { |
a5b6f60c | 300 | /* FIXME: .... */ |
1da177e4 LT |
301 | return CYBERJACK_LOCAL_BUF_SIZE; |
302 | } | |
303 | ||
95da310e | 304 | static void cyberjack_read_int_callback(struct urb *urb) |
1da177e4 | 305 | { |
cdc97792 | 306 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
307 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
308 | unsigned char *data = urb->transfer_buffer; | |
7dcc85cd | 309 | int status = urb->status; |
1da177e4 LT |
310 | int result; |
311 | ||
441b62c1 | 312 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
313 | |
314 | /* the urb might have been killed. */ | |
7dcc85cd | 315 | if (status) |
1da177e4 LT |
316 | return; |
317 | ||
b9c52f15 AC |
318 | usb_serial_debug_data(debug, &port->dev, __func__, |
319 | urb->actual_length, data); | |
1da177e4 LT |
320 | |
321 | /* React only to interrupts signaling a bulk_in transfer */ | |
b9c52f15 | 322 | if (urb->actual_length == 4 && data[0] == 0x01) { |
1da177e4 | 323 | short old_rdtodo; |
1da177e4 LT |
324 | |
325 | /* This is a announcement of coming bulk_ins. */ | |
326 | unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3; | |
327 | ||
328 | spin_lock(&priv->lock); | |
329 | ||
330 | old_rdtodo = priv->rdtodo; | |
331 | ||
b9c52f15 AC |
332 | if (old_rdtodo + size < old_rdtodo) { |
333 | dbg("To many bulk_in urbs to do."); | |
1da177e4 LT |
334 | spin_unlock(&priv->lock); |
335 | goto resubmit; | |
336 | } | |
337 | ||
338 | /* "+=" is probably more fault tollerant than "=" */ | |
339 | priv->rdtodo += size; | |
340 | ||
441b62c1 | 341 | dbg("%s - rdtodo: %d", __func__, priv->rdtodo); |
1da177e4 LT |
342 | |
343 | spin_unlock(&priv->lock); | |
344 | ||
b9c52f15 | 345 | if (!old_rdtodo) { |
1da177e4 LT |
346 | port->read_urb->dev = port->serial->dev; |
347 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
b9c52f15 | 348 | if (result) |
194343d9 GKH |
349 | dev_err(&port->dev, "%s - failed resubmitting " |
350 | "read urb, error %d\n", | |
351 | __func__, result); | |
441b62c1 | 352 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
353 | } |
354 | } | |
355 | ||
356 | resubmit: | |
357 | port->interrupt_in_urb->dev = port->serial->dev; | |
358 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); | |
359 | if (result) | |
194343d9 | 360 | dev_err(&port->dev, "usb_submit_urb(read int) failed\n"); |
441b62c1 | 361 | dbg("%s - usb_submit_urb(int urb)", __func__); |
1da177e4 LT |
362 | } |
363 | ||
95da310e | 364 | static void cyberjack_read_bulk_callback(struct urb *urb) |
1da177e4 | 365 | { |
cdc97792 | 366 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
367 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
368 | struct tty_struct *tty; | |
369 | unsigned char *data = urb->transfer_buffer; | |
370 | short todo; | |
1da177e4 | 371 | int result; |
7dcc85cd | 372 | int status = urb->status; |
1da177e4 | 373 | |
441b62c1 | 374 | dbg("%s - port %d", __func__, port->number); |
7dcc85cd | 375 | |
b9c52f15 AC |
376 | usb_serial_debug_data(debug, &port->dev, __func__, |
377 | urb->actual_length, data); | |
7dcc85cd GKH |
378 | if (status) { |
379 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 380 | __func__, status); |
1da177e4 LT |
381 | return; |
382 | } | |
383 | ||
4a90f09b | 384 | tty = tty_port_tty_get(&port->port); |
1da177e4 | 385 | if (!tty) { |
441b62c1 | 386 | dbg("%s - ignoring since device not open\n", __func__); |
1da177e4 LT |
387 | return; |
388 | } | |
389 | if (urb->actual_length) { | |
33f0f88f AC |
390 | tty_buffer_request_room(tty, urb->actual_length); |
391 | tty_insert_flip_string(tty, data, urb->actual_length); | |
b9c52f15 | 392 | tty_flip_buffer_push(tty); |
1da177e4 | 393 | } |
4a90f09b | 394 | tty_kref_put(tty); |
1da177e4 LT |
395 | |
396 | spin_lock(&priv->lock); | |
397 | ||
398 | /* Reduce urbs to do by one. */ | |
b9c52f15 | 399 | priv->rdtodo -= urb->actual_length; |
1da177e4 | 400 | /* Just to be sure */ |
b9c52f15 AC |
401 | if (priv->rdtodo < 0) |
402 | priv->rdtodo = 0; | |
1da177e4 LT |
403 | todo = priv->rdtodo; |
404 | ||
405 | spin_unlock(&priv->lock); | |
406 | ||
441b62c1 | 407 | dbg("%s - rdtodo: %d", __func__, todo); |
1da177e4 LT |
408 | |
409 | /* Continue to read if we have still urbs to do. */ | |
b9c52f15 | 410 | if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) { |
1da177e4 LT |
411 | port->read_urb->dev = port->serial->dev; |
412 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
413 | if (result) | |
194343d9 GKH |
414 | dev_err(&port->dev, "%s - failed resubmitting read " |
415 | "urb, error %d\n", __func__, result); | |
441b62c1 | 416 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
417 | } |
418 | } | |
419 | ||
95da310e | 420 | static void cyberjack_write_bulk_callback(struct urb *urb) |
1da177e4 | 421 | { |
cdc97792 | 422 | struct usb_serial_port *port = urb->context; |
1da177e4 | 423 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
7dcc85cd | 424 | int status = urb->status; |
1da177e4 | 425 | |
441b62c1 | 426 | dbg("%s - port %d", __func__, port->number); |
507ca9bc GKH |
427 | |
428 | port->write_urb_busy = 0; | |
7dcc85cd GKH |
429 | if (status) { |
430 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 431 | __func__, status); |
1da177e4 LT |
432 | return; |
433 | } | |
434 | ||
435 | spin_lock(&priv->lock); | |
436 | ||
437 | /* only do something if we have more data to send */ | |
b9c52f15 | 438 | if (priv->wrfilled) { |
1da177e4 LT |
439 | int length, blksize, result; |
440 | ||
441b62c1 | 441 | dbg("%s - transmitting data (frame n)", __func__); |
1da177e4 LT |
442 | |
443 | length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ? | |
444 | port->bulk_out_size : (priv->wrfilled - priv->wrsent); | |
445 | ||
b9c52f15 AC |
446 | memcpy(port->write_urb->transfer_buffer, |
447 | priv->wrbuf + priv->wrsent, length); | |
448 | priv->wrsent += length; | |
1da177e4 LT |
449 | |
450 | /* set up our urb */ | |
b9c52f15 | 451 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
1da177e4 LT |
452 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
453 | port->write_urb->transfer_buffer, length, | |
b9c52f15 AC |
454 | ((port->serial->type->write_bulk_callback) ? |
455 | port->serial->type->write_bulk_callback : | |
456 | cyberjack_write_bulk_callback), | |
1da177e4 LT |
457 | port); |
458 | ||
459 | /* send the data out the bulk port */ | |
460 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
461 | if (result) { | |
194343d9 GKH |
462 | dev_err(&port->dev, |
463 | "%s - failed submitting write urb, error %d\n", | |
464 | __func__, result); | |
1da177e4 | 465 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
466 | priv->wrfilled = 0; |
467 | priv->wrsent = 0; | |
1da177e4 LT |
468 | goto exit; |
469 | } | |
470 | ||
b9c52f15 AC |
471 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
472 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 LT |
473 | |
474 | blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; | |
475 | ||
b9c52f15 AC |
476 | if (priv->wrsent >= priv->wrfilled || |
477 | priv->wrsent >= blksize) { | |
441b62c1 | 478 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 479 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
480 | priv->wrfilled = 0; |
481 | priv->wrsent = 0; | |
1da177e4 LT |
482 | } |
483 | } | |
484 | ||
485 | exit: | |
486 | spin_unlock(&priv->lock); | |
cf2c7481 | 487 | usb_serial_port_softint(port); |
1da177e4 LT |
488 | } |
489 | ||
b9c52f15 | 490 | static int __init cyberjack_init(void) |
1da177e4 LT |
491 | { |
492 | int retval; | |
493 | retval = usb_serial_register(&cyberjack_device); | |
494 | if (retval) | |
495 | goto failed_usb_serial_register; | |
496 | retval = usb_register(&cyberjack_driver); | |
b9c52f15 | 497 | if (retval) |
1da177e4 LT |
498 | goto failed_usb_register; |
499 | ||
c197a8db GKH |
500 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION " " |
501 | DRIVER_AUTHOR "\n"); | |
502 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); | |
1da177e4 LT |
503 | |
504 | return 0; | |
505 | failed_usb_register: | |
506 | usb_serial_deregister(&cyberjack_device); | |
507 | failed_usb_serial_register: | |
508 | return retval; | |
509 | } | |
510 | ||
b9c52f15 | 511 | static void __exit cyberjack_exit(void) |
1da177e4 | 512 | { |
b9c52f15 AC |
513 | usb_deregister(&cyberjack_driver); |
514 | usb_serial_deregister(&cyberjack_device); | |
1da177e4 LT |
515 | } |
516 | ||
517 | module_init(cyberjack_init); | |
518 | module_exit(cyberjack_exit); | |
519 | ||
b9c52f15 AC |
520 | MODULE_AUTHOR(DRIVER_AUTHOR); |
521 | MODULE_DESCRIPTION(DRIVER_DESC); | |
522 | MODULE_VERSION(DRIVER_VERSION); | |
1da177e4 LT |
523 | MODULE_LICENSE("GPL"); |
524 | ||
525 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
526 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |