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 | 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 AC |
63 | static int cyberjack_open(struct tty_struct *tty, |
64 | struct usb_serial_port *port, struct file *filp); | |
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 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, | |
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; | |
141 | serial->port[i]->interrupt_in_urb->dev = serial->dev; | |
b9c52f15 | 142 | result = usb_submit_urb(serial->port[i]->interrupt_in_urb, |
1da177e4 LT |
143 | GFP_KERNEL); |
144 | if (result) | |
194343d9 GKH |
145 | dev_err(&serial->dev->dev, |
146 | "usb_submit_urb(read int) failed\n"); | |
441b62c1 | 147 | dbg("%s - usb_submit_urb(int urb)", __func__); |
1da177e4 LT |
148 | } |
149 | ||
b9c52f15 | 150 | return 0; |
1da177e4 LT |
151 | } |
152 | ||
f9c99bb8 | 153 | static void cyberjack_disconnect(struct usb_serial *serial) |
1da177e4 LT |
154 | { |
155 | int i; | |
b9c52f15 | 156 | |
441b62c1 | 157 | dbg("%s", __func__); |
1da177e4 | 158 | |
f9c99bb8 | 159 | for (i = 0; i < serial->num_ports; ++i) |
1da177e4 | 160 | usb_kill_urb(serial->port[i]->interrupt_in_urb); |
f9c99bb8 AS |
161 | } |
162 | ||
163 | static void cyberjack_release(struct usb_serial *serial) | |
164 | { | |
165 | int i; | |
166 | ||
167 | dbg("%s", __func__); | |
168 | ||
169 | for (i = 0; i < serial->num_ports; ++i) { | |
1da177e4 LT |
170 | /* My special items, the standard routines free my urbs */ |
171 | kfree(usb_get_serial_port_data(serial->port[i])); | |
1da177e4 LT |
172 | } |
173 | } | |
b9c52f15 | 174 | |
95da310e AC |
175 | static int cyberjack_open(struct tty_struct *tty, |
176 | struct usb_serial_port *port, struct file *filp) | |
1da177e4 LT |
177 | { |
178 | struct cyberjack_private *priv; | |
179 | unsigned long flags; | |
180 | int result = 0; | |
181 | ||
441b62c1 | 182 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 183 | |
b9c52f15 | 184 | dbg("%s - usb_clear_halt", __func__); |
1da177e4 LT |
185 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); |
186 | ||
1da177e4 LT |
187 | priv = usb_get_serial_port_data(port); |
188 | spin_lock_irqsave(&priv->lock, flags); | |
189 | priv->rdtodo = 0; | |
190 | priv->wrfilled = 0; | |
191 | priv->wrsent = 0; | |
192 | spin_unlock_irqrestore(&priv->lock, flags); | |
193 | ||
194 | return result; | |
195 | } | |
196 | ||
335f8514 | 197 | static void cyberjack_close(struct usb_serial_port *port) |
1da177e4 | 198 | { |
441b62c1 | 199 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
200 | |
201 | if (port->serial->dev) { | |
202 | /* shutdown any bulk reads that might be going on */ | |
203 | usb_kill_urb(port->write_urb); | |
204 | usb_kill_urb(port->read_urb); | |
205 | } | |
206 | } | |
207 | ||
95da310e AC |
208 | static int cyberjack_write(struct tty_struct *tty, |
209 | struct usb_serial_port *port, const unsigned char *buf, int count) | |
1da177e4 LT |
210 | { |
211 | struct usb_serial *serial = port->serial; | |
212 | struct cyberjack_private *priv = usb_get_serial_port_data(port); | |
213 | unsigned long flags; | |
214 | int result; | |
215 | int wrexpected; | |
216 | ||
441b62c1 | 217 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
218 | |
219 | if (count == 0) { | |
441b62c1 | 220 | dbg("%s - write request of 0 bytes", __func__); |
a5b6f60c | 221 | return 0; |
1da177e4 LT |
222 | } |
223 | ||
e81ee637 | 224 | spin_lock_bh(&port->lock); |
507ca9bc | 225 | if (port->write_urb_busy) { |
e81ee637 | 226 | spin_unlock_bh(&port->lock); |
441b62c1 | 227 | dbg("%s - already writing", __func__); |
507ca9bc | 228 | return 0; |
1da177e4 | 229 | } |
507ca9bc | 230 | port->write_urb_busy = 1; |
e81ee637 | 231 | spin_unlock_bh(&port->lock); |
1da177e4 LT |
232 | |
233 | spin_lock_irqsave(&priv->lock, flags); | |
234 | ||
b9c52f15 | 235 | if (count+priv->wrfilled > sizeof(priv->wrbuf)) { |
1da177e4 | 236 | /* To much data for buffer. Reset buffer. */ |
a5b6f60c | 237 | priv->wrfilled = 0; |
507ca9bc | 238 | port->write_urb_busy = 0; |
a5b6f60c AC |
239 | spin_unlock_irqrestore(&priv->lock, flags); |
240 | return 0; | |
1da177e4 LT |
241 | } |
242 | ||
243 | /* Copy data */ | |
b9c52f15 | 244 | memcpy(priv->wrbuf + priv->wrfilled, buf, count); |
1da177e4 | 245 | |
441b62c1 | 246 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
b9c52f15 | 247 | priv->wrbuf + priv->wrfilled); |
1da177e4 LT |
248 | priv->wrfilled += count; |
249 | ||
b9c52f15 | 250 | if (priv->wrfilled >= 3) { |
1da177e4 | 251 | wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; |
441b62c1 | 252 | dbg("%s - expected data: %d", __func__, wrexpected); |
b9c52f15 | 253 | } else |
1da177e4 | 254 | wrexpected = sizeof(priv->wrbuf); |
1da177e4 | 255 | |
b9c52f15 | 256 | if (priv->wrfilled >= wrexpected) { |
1da177e4 LT |
257 | /* We have enough data to begin transmission */ |
258 | int length; | |
259 | ||
441b62c1 | 260 | dbg("%s - transmitting data (frame 1)", __func__); |
b9c52f15 AC |
261 | length = (wrexpected > port->bulk_out_size) ? |
262 | port->bulk_out_size : wrexpected; | |
1da177e4 | 263 | |
b9c52f15 AC |
264 | memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length); |
265 | priv->wrsent = length; | |
1da177e4 LT |
266 | |
267 | /* set up our urb */ | |
b9c52f15 | 268 | usb_fill_bulk_urb(port->write_urb, serial->dev, |
1da177e4 LT |
269 | usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), |
270 | port->write_urb->transfer_buffer, length, | |
b9c52f15 AC |
271 | ((serial->type->write_bulk_callback) ? |
272 | serial->type->write_bulk_callback : | |
273 | cyberjack_write_bulk_callback), | |
1da177e4 LT |
274 | port); |
275 | ||
276 | /* send the data out the bulk port */ | |
277 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
278 | if (result) { | |
194343d9 GKH |
279 | dev_err(&port->dev, |
280 | "%s - failed submitting write urb, error %d", | |
281 | __func__, result); | |
1da177e4 | 282 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
283 | priv->wrfilled = 0; |
284 | priv->wrsent = 0; | |
1da177e4 | 285 | spin_unlock_irqrestore(&priv->lock, flags); |
507ca9bc | 286 | port->write_urb_busy = 0; |
1da177e4 LT |
287 | return 0; |
288 | } | |
289 | ||
b9c52f15 AC |
290 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
291 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 | 292 | |
b9c52f15 | 293 | if (priv->wrsent >= priv->wrfilled) { |
441b62c1 | 294 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 295 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
296 | priv->wrfilled = 0; |
297 | priv->wrsent = 0; | |
1da177e4 LT |
298 | } |
299 | } | |
300 | ||
301 | spin_unlock_irqrestore(&priv->lock, flags); | |
302 | ||
b9c52f15 AC |
303 | return count; |
304 | } | |
1da177e4 | 305 | |
95da310e | 306 | static int cyberjack_write_room(struct tty_struct *tty) |
1da177e4 | 307 | { |
a5b6f60c | 308 | /* FIXME: .... */ |
1da177e4 LT |
309 | return CYBERJACK_LOCAL_BUF_SIZE; |
310 | } | |
311 | ||
95da310e | 312 | static void cyberjack_read_int_callback(struct urb *urb) |
1da177e4 | 313 | { |
cdc97792 | 314 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
315 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
316 | unsigned char *data = urb->transfer_buffer; | |
7dcc85cd | 317 | int status = urb->status; |
1da177e4 LT |
318 | int result; |
319 | ||
441b62c1 | 320 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
321 | |
322 | /* the urb might have been killed. */ | |
7dcc85cd | 323 | if (status) |
1da177e4 LT |
324 | return; |
325 | ||
b9c52f15 AC |
326 | usb_serial_debug_data(debug, &port->dev, __func__, |
327 | urb->actual_length, data); | |
1da177e4 LT |
328 | |
329 | /* React only to interrupts signaling a bulk_in transfer */ | |
b9c52f15 | 330 | if (urb->actual_length == 4 && data[0] == 0x01) { |
1da177e4 | 331 | short old_rdtodo; |
1da177e4 LT |
332 | |
333 | /* This is a announcement of coming bulk_ins. */ | |
334 | unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3; | |
335 | ||
336 | spin_lock(&priv->lock); | |
337 | ||
338 | old_rdtodo = priv->rdtodo; | |
339 | ||
b9c52f15 AC |
340 | if (old_rdtodo + size < old_rdtodo) { |
341 | dbg("To many bulk_in urbs to do."); | |
1da177e4 LT |
342 | spin_unlock(&priv->lock); |
343 | goto resubmit; | |
344 | } | |
345 | ||
346 | /* "+=" is probably more fault tollerant than "=" */ | |
347 | priv->rdtodo += size; | |
348 | ||
441b62c1 | 349 | dbg("%s - rdtodo: %d", __func__, priv->rdtodo); |
1da177e4 LT |
350 | |
351 | spin_unlock(&priv->lock); | |
352 | ||
b9c52f15 | 353 | if (!old_rdtodo) { |
1da177e4 LT |
354 | port->read_urb->dev = port->serial->dev; |
355 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
b9c52f15 | 356 | if (result) |
194343d9 GKH |
357 | dev_err(&port->dev, "%s - failed resubmitting " |
358 | "read urb, error %d\n", | |
359 | __func__, result); | |
441b62c1 | 360 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
361 | } |
362 | } | |
363 | ||
364 | resubmit: | |
365 | port->interrupt_in_urb->dev = port->serial->dev; | |
366 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); | |
367 | if (result) | |
194343d9 | 368 | dev_err(&port->dev, "usb_submit_urb(read int) failed\n"); |
441b62c1 | 369 | dbg("%s - usb_submit_urb(int urb)", __func__); |
1da177e4 LT |
370 | } |
371 | ||
95da310e | 372 | static void cyberjack_read_bulk_callback(struct urb *urb) |
1da177e4 | 373 | { |
cdc97792 | 374 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
375 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
376 | struct tty_struct *tty; | |
377 | unsigned char *data = urb->transfer_buffer; | |
378 | short todo; | |
1da177e4 | 379 | int result; |
7dcc85cd | 380 | int status = urb->status; |
1da177e4 | 381 | |
441b62c1 | 382 | dbg("%s - port %d", __func__, port->number); |
7dcc85cd | 383 | |
b9c52f15 AC |
384 | usb_serial_debug_data(debug, &port->dev, __func__, |
385 | urb->actual_length, data); | |
7dcc85cd GKH |
386 | if (status) { |
387 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 388 | __func__, status); |
1da177e4 LT |
389 | return; |
390 | } | |
391 | ||
4a90f09b | 392 | tty = tty_port_tty_get(&port->port); |
1da177e4 | 393 | if (!tty) { |
441b62c1 | 394 | dbg("%s - ignoring since device not open\n", __func__); |
1da177e4 LT |
395 | return; |
396 | } | |
397 | if (urb->actual_length) { | |
33f0f88f AC |
398 | tty_buffer_request_room(tty, urb->actual_length); |
399 | tty_insert_flip_string(tty, data, urb->actual_length); | |
b9c52f15 | 400 | tty_flip_buffer_push(tty); |
1da177e4 | 401 | } |
4a90f09b | 402 | tty_kref_put(tty); |
1da177e4 LT |
403 | |
404 | spin_lock(&priv->lock); | |
405 | ||
406 | /* Reduce urbs to do by one. */ | |
b9c52f15 | 407 | priv->rdtodo -= urb->actual_length; |
1da177e4 | 408 | /* Just to be sure */ |
b9c52f15 AC |
409 | if (priv->rdtodo < 0) |
410 | priv->rdtodo = 0; | |
1da177e4 LT |
411 | todo = priv->rdtodo; |
412 | ||
413 | spin_unlock(&priv->lock); | |
414 | ||
441b62c1 | 415 | dbg("%s - rdtodo: %d", __func__, todo); |
1da177e4 LT |
416 | |
417 | /* Continue to read if we have still urbs to do. */ | |
b9c52f15 | 418 | if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) { |
1da177e4 LT |
419 | port->read_urb->dev = port->serial->dev; |
420 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
421 | if (result) | |
194343d9 GKH |
422 | dev_err(&port->dev, "%s - failed resubmitting read " |
423 | "urb, error %d\n", __func__, result); | |
441b62c1 | 424 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
425 | } |
426 | } | |
427 | ||
95da310e | 428 | static void cyberjack_write_bulk_callback(struct urb *urb) |
1da177e4 | 429 | { |
cdc97792 | 430 | struct usb_serial_port *port = urb->context; |
1da177e4 | 431 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
7dcc85cd | 432 | int status = urb->status; |
1da177e4 | 433 | |
441b62c1 | 434 | dbg("%s - port %d", __func__, port->number); |
507ca9bc GKH |
435 | |
436 | port->write_urb_busy = 0; | |
7dcc85cd GKH |
437 | if (status) { |
438 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 439 | __func__, status); |
1da177e4 LT |
440 | return; |
441 | } | |
442 | ||
443 | spin_lock(&priv->lock); | |
444 | ||
445 | /* only do something if we have more data to send */ | |
b9c52f15 | 446 | if (priv->wrfilled) { |
1da177e4 LT |
447 | int length, blksize, result; |
448 | ||
441b62c1 | 449 | dbg("%s - transmitting data (frame n)", __func__); |
1da177e4 LT |
450 | |
451 | length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ? | |
452 | port->bulk_out_size : (priv->wrfilled - priv->wrsent); | |
453 | ||
b9c52f15 AC |
454 | memcpy(port->write_urb->transfer_buffer, |
455 | priv->wrbuf + priv->wrsent, length); | |
456 | priv->wrsent += length; | |
1da177e4 LT |
457 | |
458 | /* set up our urb */ | |
b9c52f15 | 459 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
1da177e4 LT |
460 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
461 | port->write_urb->transfer_buffer, length, | |
b9c52f15 AC |
462 | ((port->serial->type->write_bulk_callback) ? |
463 | port->serial->type->write_bulk_callback : | |
464 | cyberjack_write_bulk_callback), | |
1da177e4 LT |
465 | port); |
466 | ||
467 | /* send the data out the bulk port */ | |
468 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
469 | if (result) { | |
194343d9 GKH |
470 | dev_err(&port->dev, |
471 | "%s - failed submitting write urb, error %d\n", | |
472 | __func__, result); | |
1da177e4 | 473 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
474 | priv->wrfilled = 0; |
475 | priv->wrsent = 0; | |
1da177e4 LT |
476 | goto exit; |
477 | } | |
478 | ||
b9c52f15 AC |
479 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
480 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 LT |
481 | |
482 | blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; | |
483 | ||
b9c52f15 AC |
484 | if (priv->wrsent >= priv->wrfilled || |
485 | priv->wrsent >= blksize) { | |
441b62c1 | 486 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 487 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
488 | priv->wrfilled = 0; |
489 | priv->wrsent = 0; | |
1da177e4 LT |
490 | } |
491 | } | |
492 | ||
493 | exit: | |
494 | spin_unlock(&priv->lock); | |
cf2c7481 | 495 | usb_serial_port_softint(port); |
1da177e4 LT |
496 | } |
497 | ||
b9c52f15 | 498 | static int __init cyberjack_init(void) |
1da177e4 LT |
499 | { |
500 | int retval; | |
501 | retval = usb_serial_register(&cyberjack_device); | |
502 | if (retval) | |
503 | goto failed_usb_serial_register; | |
504 | retval = usb_register(&cyberjack_driver); | |
b9c52f15 | 505 | if (retval) |
1da177e4 LT |
506 | goto failed_usb_register; |
507 | ||
c197a8db GKH |
508 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION " " |
509 | DRIVER_AUTHOR "\n"); | |
510 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); | |
1da177e4 LT |
511 | |
512 | return 0; | |
513 | failed_usb_register: | |
514 | usb_serial_deregister(&cyberjack_device); | |
515 | failed_usb_serial_register: | |
516 | return retval; | |
517 | } | |
518 | ||
b9c52f15 | 519 | static void __exit cyberjack_exit(void) |
1da177e4 | 520 | { |
b9c52f15 AC |
521 | usb_deregister(&cyberjack_driver); |
522 | usb_serial_deregister(&cyberjack_device); | |
1da177e4 LT |
523 | } |
524 | ||
525 | module_init(cyberjack_init); | |
526 | module_exit(cyberjack_exit); | |
527 | ||
b9c52f15 AC |
528 | MODULE_AUTHOR(DRIVER_AUTHOR); |
529 | MODULE_DESCRIPTION(DRIVER_DESC); | |
530 | MODULE_VERSION(DRIVER_VERSION); | |
1da177e4 LT |
531 | MODULE_LICENSE("GPL"); |
532 | ||
533 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
534 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |