Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * USB Empeg empeg-car player driver | |
3 | * | |
4 | * Copyright (C) 2000, 2001 | |
5 | * Gary Brubaker (xavyer@ix.netcom.com) | |
6 | * | |
7 | * Copyright (C) 1999 - 2001 | |
8 | * Greg Kroah-Hartman (greg@kroah.com) | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License, as published by | |
12 | * the Free Software Foundation, version 2. | |
13 | * | |
93c46795 AC |
14 | * See Documentation/usb/usb-serial.txt for more information on using this |
15 | * driver | |
16 | * | |
1da177e4 | 17 | * (07/16/2001) gb |
93c46795 AC |
18 | * remove unused code in empeg_close() (thanks to Oliver Neukum for |
19 | * pointing this out) and rewrote empeg_set_termios(). | |
20 | * | |
1da177e4 | 21 | * (05/30/2001) gkh |
93c46795 AC |
22 | * switched from using spinlock to a semaphore, which fixes lots of |
23 | * problems. | |
1da177e4 LT |
24 | * |
25 | * (04/08/2001) gb | |
26 | * Identify version on module load. | |
93c46795 | 27 | * |
1da177e4 | 28 | * (01/22/2001) gb |
93c46795 AC |
29 | * Added write_room() and chars_in_buffer() support. |
30 | * | |
1da177e4 LT |
31 | * (12/21/2000) gb |
32 | * Moved termio stuff inside the port->active check. | |
33 | * Moved MOD_DEC_USE_COUNT to end of empeg_close(). | |
93c46795 | 34 | * |
1da177e4 | 35 | * (12/03/2000) gb |
4a90f09b AC |
36 | * Added tty->ldisc.set_termios(port, tty, NULL) to empeg_open(). |
37 | * This notifies the tty driver that the termios have changed. | |
93c46795 | 38 | * |
1da177e4 | 39 | * (11/13/2000) gb |
93c46795 AC |
40 | * Moved tty->low_latency = 1 from empeg_read_bulk_callback() to |
41 | * empeg_open() (It only needs to be set once - Doh!) | |
42 | * | |
1da177e4 LT |
43 | * (11/11/2000) gb |
44 | * Updated to work with id_table structure. | |
93c46795 | 45 | * |
1da177e4 LT |
46 | * (11/04/2000) gb |
47 | * Forked this from visor.c, and hacked it up to work with an | |
48 | * Empeg ltd. empeg-car player. Constructive criticism welcomed. | |
49 | * I would like to say, 'Thank You' to Greg Kroah-Hartman for the | |
50 | * use of his code, and for his guidance, advice and patience. :) | |
51 | * A 'Thank You' is in order for John Ripley of Empeg ltd for his | |
52 | * advice, and patience too. | |
93c46795 | 53 | * |
1da177e4 LT |
54 | */ |
55 | ||
1da177e4 LT |
56 | #include <linux/kernel.h> |
57 | #include <linux/errno.h> | |
58 | #include <linux/init.h> | |
59 | #include <linux/slab.h> | |
60 | #include <linux/tty.h> | |
61 | #include <linux/tty_driver.h> | |
62 | #include <linux/tty_flip.h> | |
63 | #include <linux/module.h> | |
64 | #include <linux/spinlock.h> | |
93c46795 | 65 | #include <linux/uaccess.h> |
1da177e4 | 66 | #include <linux/usb.h> |
a969888c | 67 | #include <linux/usb/serial.h> |
1da177e4 LT |
68 | |
69 | static int debug; | |
70 | ||
71 | /* | |
72 | * Version Information | |
73 | */ | |
74 | #define DRIVER_VERSION "v1.2" | |
75 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>" | |
76 | #define DRIVER_DESC "USB Empeg Mark I/II Driver" | |
77 | ||
78 | #define EMPEG_VENDOR_ID 0x084f | |
79 | #define EMPEG_PRODUCT_ID 0x0001 | |
80 | ||
81 | /* function prototypes for an empeg-car player */ | |
a509a7e4 | 82 | static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 83 | static void empeg_close(struct usb_serial_port *port); |
93c46795 AC |
84 | static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, |
85 | const unsigned char *buf, | |
86 | int count); | |
87 | static int empeg_write_room(struct tty_struct *tty); | |
88 | static int empeg_chars_in_buffer(struct tty_struct *tty); | |
89 | static void empeg_throttle(struct tty_struct *tty); | |
90 | static void empeg_unthrottle(struct tty_struct *tty); | |
91 | static int empeg_startup(struct usb_serial *serial); | |
fe1ae7fd | 92 | static void empeg_init_termios(struct tty_struct *tty); |
93c46795 AC |
93 | static void empeg_write_bulk_callback(struct urb *urb); |
94 | static void empeg_read_bulk_callback(struct urb *urb); | |
1da177e4 LT |
95 | |
96 | static struct usb_device_id id_table [] = { | |
97 | { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) }, | |
98 | { } /* Terminating entry */ | |
99 | }; | |
100 | ||
93c46795 | 101 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
102 | |
103 | static struct usb_driver empeg_driver = { | |
1da177e4 LT |
104 | .name = "empeg", |
105 | .probe = usb_serial_probe, | |
106 | .disconnect = usb_serial_disconnect, | |
107 | .id_table = id_table, | |
ba9dc657 | 108 | .no_dynamic_id = 1, |
1da177e4 LT |
109 | }; |
110 | ||
ea65370d | 111 | static struct usb_serial_driver empeg_device = { |
18fcac35 GKH |
112 | .driver = { |
113 | .owner = THIS_MODULE, | |
269bda1c | 114 | .name = "empeg", |
18fcac35 | 115 | }, |
1da177e4 | 116 | .id_table = id_table, |
d9b1b787 | 117 | .usb_driver = &empeg_driver, |
1da177e4 LT |
118 | .num_ports = 1, |
119 | .open = empeg_open, | |
120 | .close = empeg_close, | |
121 | .throttle = empeg_throttle, | |
122 | .unthrottle = empeg_unthrottle, | |
123 | .attach = empeg_startup, | |
fe1ae7fd | 124 | .init_termios = empeg_init_termios, |
1da177e4 LT |
125 | .write = empeg_write, |
126 | .write_room = empeg_write_room, | |
127 | .chars_in_buffer = empeg_chars_in_buffer, | |
128 | .write_bulk_callback = empeg_write_bulk_callback, | |
129 | .read_bulk_callback = empeg_read_bulk_callback, | |
130 | }; | |
131 | ||
132 | #define NUM_URBS 16 | |
133 | #define URB_TRANSFER_BUFFER_SIZE 4096 | |
134 | ||
135 | static struct urb *write_urb_pool[NUM_URBS]; | |
136 | static spinlock_t write_urb_pool_lock; | |
137 | static int bytes_in; | |
138 | static int bytes_out; | |
139 | ||
140 | /****************************************************************************** | |
141 | * Empeg specific driver functions | |
142 | ******************************************************************************/ | |
a509a7e4 | 143 | static int empeg_open(struct tty_struct *tty,struct usb_serial_port *port) |
1da177e4 LT |
144 | { |
145 | struct usb_serial *serial = port->serial; | |
146 | int result = 0; | |
147 | ||
441b62c1 | 148 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 149 | |
1da177e4 LT |
150 | bytes_in = 0; |
151 | bytes_out = 0; | |
152 | ||
153 | /* Start reading from the device */ | |
154 | usb_fill_bulk_urb( | |
155 | port->read_urb, | |
93c46795 | 156 | serial->dev, |
1da177e4 LT |
157 | usb_rcvbulkpipe(serial->dev, |
158 | port->bulk_in_endpointAddress), | |
159 | port->read_urb->transfer_buffer, | |
160 | port->read_urb->transfer_buffer_length, | |
161 | empeg_read_bulk_callback, | |
162 | port); | |
163 | ||
164 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
165 | ||
166 | if (result) | |
93c46795 AC |
167 | dev_err(&port->dev, |
168 | "%s - failed submitting read urb, error %d\n", | |
169 | __func__, result); | |
1da177e4 LT |
170 | |
171 | return result; | |
172 | } | |
173 | ||
174 | ||
335f8514 | 175 | static void empeg_close(struct usb_serial_port *port) |
1da177e4 | 176 | { |
441b62c1 | 177 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
178 | |
179 | /* shutdown our bulk read */ | |
180 | usb_kill_urb(port->read_urb); | |
181 | /* Uncomment the following line if you want to see some statistics in your syslog */ | |
182 | /* dev_info (&port->dev, "Bytes In = %d Bytes Out = %d\n", bytes_in, bytes_out); */ | |
183 | } | |
184 | ||
185 | ||
93c46795 AC |
186 | static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, |
187 | const unsigned char *buf, int count) | |
1da177e4 LT |
188 | { |
189 | struct usb_serial *serial = port->serial; | |
190 | struct urb *urb; | |
191 | const unsigned char *current_position = buf; | |
192 | unsigned long flags; | |
193 | int status; | |
194 | int i; | |
195 | int bytes_sent = 0; | |
196 | int transfer_size; | |
197 | ||
441b62c1 | 198 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
199 | |
200 | while (count > 0) { | |
1da177e4 LT |
201 | /* try to find a free urb in our list of them */ |
202 | urb = NULL; | |
203 | ||
93c46795 | 204 | spin_lock_irqsave(&write_urb_pool_lock, flags); |
1da177e4 LT |
205 | |
206 | for (i = 0; i < NUM_URBS; ++i) { | |
207 | if (write_urb_pool[i]->status != -EINPROGRESS) { | |
208 | urb = write_urb_pool[i]; | |
209 | break; | |
210 | } | |
211 | } | |
212 | ||
93c46795 | 213 | spin_unlock_irqrestore(&write_urb_pool_lock, flags); |
1da177e4 LT |
214 | |
215 | if (urb == NULL) { | |
441b62c1 | 216 | dbg("%s - no more free urbs", __func__); |
1da177e4 LT |
217 | goto exit; |
218 | } | |
219 | ||
220 | if (urb->transfer_buffer == NULL) { | |
93c46795 | 221 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); |
1da177e4 | 222 | if (urb->transfer_buffer == NULL) { |
93c46795 AC |
223 | dev_err(&port->dev, |
224 | "%s no more kernel memory...\n", | |
225 | __func__); | |
1da177e4 LT |
226 | goto exit; |
227 | } | |
228 | } | |
229 | ||
93c46795 | 230 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
1da177e4 | 231 | |
93c46795 | 232 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
1da177e4 | 233 | |
441b62c1 | 234 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, urb->transfer_buffer); |
1da177e4 LT |
235 | |
236 | /* build up our urb */ | |
93c46795 | 237 | usb_fill_bulk_urb( |
1da177e4 LT |
238 | urb, |
239 | serial->dev, | |
240 | usb_sndbulkpipe(serial->dev, | |
93c46795 | 241 | port->bulk_out_endpointAddress), |
1da177e4 LT |
242 | urb->transfer_buffer, |
243 | transfer_size, | |
244 | empeg_write_bulk_callback, | |
245 | port); | |
246 | ||
247 | /* send it down the pipe */ | |
248 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
249 | if (status) { | |
441b62c1 | 250 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __func__, status); |
1da177e4 LT |
251 | bytes_sent = status; |
252 | break; | |
253 | } | |
254 | ||
255 | current_position += transfer_size; | |
256 | bytes_sent += transfer_size; | |
257 | count -= transfer_size; | |
258 | bytes_out += transfer_size; | |
259 | ||
260 | } | |
1da177e4 LT |
261 | exit: |
262 | return bytes_sent; | |
93c46795 | 263 | } |
1da177e4 LT |
264 | |
265 | ||
95da310e | 266 | static int empeg_write_room(struct tty_struct *tty) |
1da177e4 | 267 | { |
95da310e | 268 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
269 | unsigned long flags; |
270 | int i; | |
271 | int room = 0; | |
272 | ||
441b62c1 | 273 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 274 | |
93c46795 | 275 | spin_lock_irqsave(&write_urb_pool_lock, flags); |
1da177e4 LT |
276 | /* tally up the number of bytes available */ |
277 | for (i = 0; i < NUM_URBS; ++i) { | |
93c46795 | 278 | if (write_urb_pool[i]->status != -EINPROGRESS) |
1da177e4 | 279 | room += URB_TRANSFER_BUFFER_SIZE; |
93c46795 AC |
280 | } |
281 | spin_unlock_irqrestore(&write_urb_pool_lock, flags); | |
441b62c1 | 282 | dbg("%s - returns %d", __func__, room); |
95da310e | 283 | return room; |
1da177e4 LT |
284 | |
285 | } | |
286 | ||
287 | ||
95da310e | 288 | static int empeg_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 289 | { |
95da310e | 290 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
291 | unsigned long flags; |
292 | int i; | |
293 | int chars = 0; | |
294 | ||
441b62c1 | 295 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 296 | |
93c46795 | 297 | spin_lock_irqsave(&write_urb_pool_lock, flags); |
1da177e4 LT |
298 | |
299 | /* tally up the number of bytes waiting */ | |
300 | for (i = 0; i < NUM_URBS; ++i) { | |
93c46795 | 301 | if (write_urb_pool[i]->status == -EINPROGRESS) |
1da177e4 | 302 | chars += URB_TRANSFER_BUFFER_SIZE; |
1da177e4 LT |
303 | } |
304 | ||
93c46795 | 305 | spin_unlock_irqrestore(&write_urb_pool_lock, flags); |
441b62c1 | 306 | dbg("%s - returns %d", __func__, chars); |
93c46795 | 307 | return chars; |
1da177e4 LT |
308 | } |
309 | ||
310 | ||
93c46795 | 311 | static void empeg_write_bulk_callback(struct urb *urb) |
1da177e4 | 312 | { |
335202f4 GKH |
313 | struct usb_serial_port *port = urb->context; |
314 | int status = urb->status; | |
1da177e4 | 315 | |
441b62c1 | 316 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 317 | |
335202f4 GKH |
318 | if (status) { |
319 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 320 | __func__, status); |
1da177e4 LT |
321 | return; |
322 | } | |
323 | ||
cf2c7481 | 324 | usb_serial_port_softint(port); |
1da177e4 LT |
325 | } |
326 | ||
327 | ||
93c46795 | 328 | static void empeg_read_bulk_callback(struct urb *urb) |
1da177e4 | 329 | { |
cdc97792 | 330 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
331 | struct tty_struct *tty; |
332 | unsigned char *data = urb->transfer_buffer; | |
1da177e4 | 333 | int result; |
335202f4 | 334 | int status = urb->status; |
1da177e4 | 335 | |
441b62c1 | 336 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 337 | |
335202f4 GKH |
338 | if (status) { |
339 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 340 | __func__, status); |
1da177e4 LT |
341 | return; |
342 | } | |
343 | ||
93c46795 AC |
344 | usb_serial_debug_data(debug, &port->dev, __func__, |
345 | urb->actual_length, data); | |
4a90f09b | 346 | tty = tty_port_tty_get(&port->port); |
1da177e4 LT |
347 | |
348 | if (urb->actual_length) { | |
33f0f88f AC |
349 | tty_buffer_request_room(tty, urb->actual_length); |
350 | tty_insert_flip_string(tty, data, urb->actual_length); | |
1da177e4 LT |
351 | tty_flip_buffer_push(tty); |
352 | bytes_in += urb->actual_length; | |
353 | } | |
4a90f09b | 354 | tty_kref_put(tty); |
1da177e4 LT |
355 | |
356 | /* Continue trying to always read */ | |
357 | usb_fill_bulk_urb( | |
358 | port->read_urb, | |
93c46795 | 359 | port->serial->dev, |
1da177e4 LT |
360 | usb_rcvbulkpipe(port->serial->dev, |
361 | port->bulk_in_endpointAddress), | |
362 | port->read_urb->transfer_buffer, | |
363 | port->read_urb->transfer_buffer_length, | |
364 | empeg_read_bulk_callback, | |
365 | port); | |
366 | ||
367 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
368 | ||
369 | if (result) | |
93c46795 AC |
370 | dev_err(&urb->dev->dev, |
371 | "%s - failed resubmitting read urb, error %d\n", | |
372 | __func__, result); | |
1da177e4 LT |
373 | |
374 | return; | |
375 | ||
376 | } | |
377 | ||
378 | ||
95da310e | 379 | static void empeg_throttle(struct tty_struct *tty) |
1da177e4 | 380 | { |
95da310e | 381 | struct usb_serial_port *port = tty->driver_data; |
441b62c1 | 382 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
383 | usb_kill_urb(port->read_urb); |
384 | } | |
385 | ||
386 | ||
95da310e | 387 | static void empeg_unthrottle(struct tty_struct *tty) |
1da177e4 | 388 | { |
95da310e | 389 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 390 | int result; |
441b62c1 | 391 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
392 | |
393 | port->read_urb->dev = port->serial->dev; | |
1da177e4 | 394 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1da177e4 | 395 | if (result) |
93c46795 AC |
396 | dev_err(&port->dev, |
397 | "%s - failed submitting read urb, error %d\n", | |
398 | __func__, result); | |
1da177e4 LT |
399 | } |
400 | ||
401 | ||
93c46795 | 402 | static int empeg_startup(struct usb_serial *serial) |
1da177e4 LT |
403 | { |
404 | int r; | |
405 | ||
441b62c1 | 406 | dbg("%s", __func__); |
1da177e4 LT |
407 | |
408 | if (serial->dev->actconfig->desc.bConfigurationValue != 1) { | |
194343d9 | 409 | dev_err(&serial->dev->dev, "active config #%d != 1 ??\n", |
1da177e4 LT |
410 | serial->dev->actconfig->desc.bConfigurationValue); |
411 | return -ENODEV; | |
412 | } | |
441b62c1 | 413 | dbg("%s - reset config", __func__); |
93c46795 | 414 | r = usb_reset_configuration(serial->dev); |
1da177e4 LT |
415 | |
416 | /* continue on with initialization */ | |
417 | return r; | |
418 | ||
419 | } | |
420 | ||
421 | ||
fe1ae7fd | 422 | static void empeg_init_termios(struct tty_struct *tty) |
1da177e4 | 423 | { |
95da310e | 424 | struct ktermios *termios = tty->termios; |
1da177e4 | 425 | |
1da177e4 | 426 | /* |
93c46795 AC |
427 | * The empeg-car player wants these particular tty settings. |
428 | * You could, for example, change the baud rate, however the | |
429 | * player only supports 115200 (currently), so there is really | |
430 | * no point in support for changes to the tty settings. | |
431 | * (at least for now) | |
432 | * | |
433 | * The default requirements for this device are: | |
434 | */ | |
998e8638 | 435 | termios->c_iflag |
1da177e4 LT |
436 | &= ~(IGNBRK /* disable ignore break */ |
437 | | BRKINT /* disable break causes interrupt */ | |
438 | | PARMRK /* disable mark parity errors */ | |
439 | | ISTRIP /* disable clear high bit of input characters */ | |
440 | | INLCR /* disable translate NL to CR */ | |
441 | | IGNCR /* disable ignore CR */ | |
442 | | ICRNL /* disable translate CR to NL */ | |
443 | | IXON); /* disable enable XON/XOFF flow control */ | |
444 | ||
998e8638 | 445 | termios->c_oflag |
1da177e4 LT |
446 | &= ~OPOST; /* disable postprocess output characters */ |
447 | ||
998e8638 | 448 | termios->c_lflag |
1da177e4 LT |
449 | &= ~(ECHO /* disable echo input characters */ |
450 | | ECHONL /* disable echo new line */ | |
451 | | ICANON /* disable erase, kill, werase, and rprnt special characters */ | |
452 | | ISIG /* disable interrupt, quit, and suspend special characters */ | |
453 | | IEXTEN); /* disable non-POSIX special characters */ | |
454 | ||
998e8638 | 455 | termios->c_cflag |
1da177e4 LT |
456 | &= ~(CSIZE /* no size */ |
457 | | PARENB /* disable parity bit */ | |
458 | | CBAUD); /* clear current baud rate */ | |
459 | ||
998e8638 AC |
460 | termios->c_cflag |
461 | |= CS8; /* character size 8 bits */ | |
1da177e4 | 462 | |
95da310e | 463 | tty_encode_baud_rate(tty, 115200, 115200); |
1da177e4 LT |
464 | } |
465 | ||
466 | ||
93c46795 | 467 | static int __init empeg_init(void) |
1da177e4 LT |
468 | { |
469 | struct urb *urb; | |
470 | int i, retval; | |
471 | ||
93c46795 AC |
472 | /* create our write urb pool and transfer buffers */ |
473 | spin_lock_init(&write_urb_pool_lock); | |
1da177e4 LT |
474 | for (i = 0; i < NUM_URBS; ++i) { |
475 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
476 | write_urb_pool[i] = urb; | |
477 | if (urb == NULL) { | |
194343d9 | 478 | printk(KERN_ERR "empeg: No more urbs???\n"); |
1da177e4 LT |
479 | continue; |
480 | } | |
481 | ||
93c46795 AC |
482 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
483 | GFP_KERNEL); | |
1da177e4 | 484 | if (!urb->transfer_buffer) { |
194343d9 GKH |
485 | printk(KERN_ERR "empeg: %s - out of memory for urb " |
486 | "buffers.", __func__); | |
1da177e4 LT |
487 | continue; |
488 | } | |
489 | } | |
490 | ||
491 | retval = usb_serial_register(&empeg_device); | |
492 | if (retval) | |
493 | goto failed_usb_serial_register; | |
494 | retval = usb_register(&empeg_driver); | |
495 | if (retval) | |
496 | goto failed_usb_register; | |
497 | ||
c197a8db GKH |
498 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
499 | DRIVER_DESC "\n"); | |
1da177e4 LT |
500 | |
501 | return 0; | |
502 | failed_usb_register: | |
503 | usb_serial_deregister(&empeg_device); | |
504 | failed_usb_serial_register: | |
505 | for (i = 0; i < NUM_URBS; ++i) { | |
506 | if (write_urb_pool[i]) { | |
1bc3c9e1 | 507 | kfree(write_urb_pool[i]->transfer_buffer); |
1da177e4 LT |
508 | usb_free_urb(write_urb_pool[i]); |
509 | } | |
510 | } | |
511 | return retval; | |
512 | } | |
513 | ||
514 | ||
93c46795 | 515 | static void __exit empeg_exit(void) |
1da177e4 LT |
516 | { |
517 | int i; | |
518 | unsigned long flags; | |
519 | ||
520 | usb_deregister(&empeg_driver); | |
93c46795 | 521 | usb_serial_deregister(&empeg_device); |
1da177e4 | 522 | |
93c46795 | 523 | spin_lock_irqsave(&write_urb_pool_lock, flags); |
1da177e4 LT |
524 | |
525 | for (i = 0; i < NUM_URBS; ++i) { | |
526 | if (write_urb_pool[i]) { | |
93c46795 AC |
527 | /* FIXME - uncomment the following usb_kill_urb call |
528 | * when the host controllers get fixed to set urb->dev | |
529 | * = NULL after the urb is finished. Otherwise this | |
530 | * call oopses. */ | |
1da177e4 | 531 | /* usb_kill_urb(write_urb_pool[i]); */ |
1bc3c9e1 | 532 | kfree(write_urb_pool[i]->transfer_buffer); |
93c46795 | 533 | usb_free_urb(write_urb_pool[i]); |
1da177e4 LT |
534 | } |
535 | } | |
93c46795 | 536 | spin_unlock_irqrestore(&write_urb_pool_lock, flags); |
1da177e4 LT |
537 | } |
538 | ||
539 | ||
540 | module_init(empeg_init); | |
541 | module_exit(empeg_exit); | |
542 | ||
93c46795 AC |
543 | MODULE_AUTHOR(DRIVER_AUTHOR); |
544 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
545 | MODULE_LICENSE("GPL"); |
546 | ||
547 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
548 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |