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 | * | |
14 | * See Documentation/usb/usb-serial.txt for more information on using this driver | |
15 | * | |
16 | * (07/16/2001) gb | |
17 | * remove unused code in empeg_close() (thanks to Oliver Neukum for pointing this | |
18 | * out) and rewrote empeg_set_termios(). | |
19 | * | |
20 | * (05/30/2001) gkh | |
21 | * switched from using spinlock to a semaphore, which fixes lots of problems. | |
22 | * | |
23 | * (04/08/2001) gb | |
24 | * Identify version on module load. | |
25 | * | |
26 | * (01/22/2001) gb | |
27 | * Added write_room() and chars_in_buffer() support. | |
28 | * | |
29 | * (12/21/2000) gb | |
30 | * Moved termio stuff inside the port->active check. | |
31 | * Moved MOD_DEC_USE_COUNT to end of empeg_close(). | |
32 | * | |
33 | * (12/03/2000) gb | |
95da310e | 34 | * Added port->port.tty->ldisc.set_termios(port->port.tty, NULL) to empeg_open() |
1da177e4 LT |
35 | * This notifies the tty driver that the termios have changed. |
36 | * | |
37 | * (11/13/2000) gb | |
38 | * Moved tty->low_latency = 1 from empeg_read_bulk_callback() to empeg_open() | |
39 | * (It only needs to be set once - Doh!) | |
40 | * | |
41 | * (11/11/2000) gb | |
42 | * Updated to work with id_table structure. | |
43 | * | |
44 | * (11/04/2000) gb | |
45 | * Forked this from visor.c, and hacked it up to work with an | |
46 | * Empeg ltd. empeg-car player. Constructive criticism welcomed. | |
47 | * I would like to say, 'Thank You' to Greg Kroah-Hartman for the | |
48 | * use of his code, and for his guidance, advice and patience. :) | |
49 | * A 'Thank You' is in order for John Ripley of Empeg ltd for his | |
50 | * advice, and patience too. | |
51 | * | |
52 | */ | |
53 | ||
1da177e4 LT |
54 | #include <linux/kernel.h> |
55 | #include <linux/errno.h> | |
56 | #include <linux/init.h> | |
57 | #include <linux/slab.h> | |
58 | #include <linux/tty.h> | |
59 | #include <linux/tty_driver.h> | |
60 | #include <linux/tty_flip.h> | |
61 | #include <linux/module.h> | |
62 | #include <linux/spinlock.h> | |
63 | #include <asm/uaccess.h> | |
64 | #include <linux/usb.h> | |
a969888c | 65 | #include <linux/usb/serial.h> |
1da177e4 LT |
66 | |
67 | static int debug; | |
68 | ||
69 | /* | |
70 | * Version Information | |
71 | */ | |
72 | #define DRIVER_VERSION "v1.2" | |
73 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>" | |
74 | #define DRIVER_DESC "USB Empeg Mark I/II Driver" | |
75 | ||
76 | #define EMPEG_VENDOR_ID 0x084f | |
77 | #define EMPEG_PRODUCT_ID 0x0001 | |
78 | ||
79 | /* function prototypes for an empeg-car player */ | |
95da310e AC |
80 | static int empeg_open (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); |
81 | static void empeg_close (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); | |
82 | static int empeg_write (struct tty_struct *tty, struct usb_serial_port *port, | |
1da177e4 LT |
83 | const unsigned char *buf, |
84 | int count); | |
95da310e AC |
85 | static int empeg_write_room (struct tty_struct *tty); |
86 | static int empeg_chars_in_buffer (struct tty_struct *tty); | |
87 | static void empeg_throttle (struct tty_struct *tty); | |
88 | static void empeg_unthrottle (struct tty_struct *tty); | |
1da177e4 LT |
89 | static int empeg_startup (struct usb_serial *serial); |
90 | static void empeg_shutdown (struct usb_serial *serial); | |
95da310e | 91 | static void empeg_set_termios (struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); |
7d12e780 DH |
92 | static void empeg_write_bulk_callback (struct urb *urb); |
93 | static void empeg_read_bulk_callback (struct urb *urb); | |
1da177e4 LT |
94 | |
95 | static struct usb_device_id id_table [] = { | |
96 | { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) }, | |
97 | { } /* Terminating entry */ | |
98 | }; | |
99 | ||
100 | MODULE_DEVICE_TABLE (usb, id_table); | |
101 | ||
102 | static struct usb_driver empeg_driver = { | |
1da177e4 LT |
103 | .name = "empeg", |
104 | .probe = usb_serial_probe, | |
105 | .disconnect = usb_serial_disconnect, | |
106 | .id_table = id_table, | |
ba9dc657 | 107 | .no_dynamic_id = 1, |
1da177e4 LT |
108 | }; |
109 | ||
ea65370d | 110 | static struct usb_serial_driver empeg_device = { |
18fcac35 GKH |
111 | .driver = { |
112 | .owner = THIS_MODULE, | |
269bda1c | 113 | .name = "empeg", |
18fcac35 | 114 | }, |
1da177e4 | 115 | .id_table = id_table, |
d9b1b787 | 116 | .usb_driver = &empeg_driver, |
1da177e4 LT |
117 | .num_ports = 1, |
118 | .open = empeg_open, | |
119 | .close = empeg_close, | |
120 | .throttle = empeg_throttle, | |
121 | .unthrottle = empeg_unthrottle, | |
122 | .attach = empeg_startup, | |
123 | .shutdown = empeg_shutdown, | |
1da177e4 LT |
124 | .set_termios = empeg_set_termios, |
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 | ******************************************************************************/ | |
95da310e AC |
143 | static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, |
144 | struct file *filp) | |
1da177e4 LT |
145 | { |
146 | struct usb_serial *serial = port->serial; | |
147 | int result = 0; | |
148 | ||
441b62c1 | 149 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
150 | |
151 | /* Force default termio settings */ | |
95da310e | 152 | empeg_set_termios (tty, port, NULL) ; |
1da177e4 LT |
153 | |
154 | bytes_in = 0; | |
155 | bytes_out = 0; | |
156 | ||
157 | /* Start reading from the device */ | |
158 | usb_fill_bulk_urb( | |
159 | port->read_urb, | |
160 | serial->dev, | |
161 | usb_rcvbulkpipe(serial->dev, | |
162 | port->bulk_in_endpointAddress), | |
163 | port->read_urb->transfer_buffer, | |
164 | port->read_urb->transfer_buffer_length, | |
165 | empeg_read_bulk_callback, | |
166 | port); | |
167 | ||
168 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
169 | ||
170 | if (result) | |
441b62c1 | 171 | dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result); |
1da177e4 LT |
172 | |
173 | return result; | |
174 | } | |
175 | ||
176 | ||
95da310e AC |
177 | static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, |
178 | struct file * filp) | |
1da177e4 | 179 | { |
441b62c1 | 180 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
181 | |
182 | /* shutdown our bulk read */ | |
183 | usb_kill_urb(port->read_urb); | |
184 | /* Uncomment the following line if you want to see some statistics in your syslog */ | |
185 | /* dev_info (&port->dev, "Bytes In = %d Bytes Out = %d\n", bytes_in, bytes_out); */ | |
186 | } | |
187 | ||
188 | ||
95da310e | 189 | static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) |
1da177e4 LT |
190 | { |
191 | struct usb_serial *serial = port->serial; | |
192 | struct urb *urb; | |
193 | const unsigned char *current_position = buf; | |
194 | unsigned long flags; | |
195 | int status; | |
196 | int i; | |
197 | int bytes_sent = 0; | |
198 | int transfer_size; | |
199 | ||
441b62c1 | 200 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
201 | |
202 | while (count > 0) { | |
1da177e4 LT |
203 | /* try to find a free urb in our list of them */ |
204 | urb = NULL; | |
205 | ||
206 | spin_lock_irqsave (&write_urb_pool_lock, flags); | |
207 | ||
208 | for (i = 0; i < NUM_URBS; ++i) { | |
209 | if (write_urb_pool[i]->status != -EINPROGRESS) { | |
210 | urb = write_urb_pool[i]; | |
211 | break; | |
212 | } | |
213 | } | |
214 | ||
215 | spin_unlock_irqrestore (&write_urb_pool_lock, flags); | |
216 | ||
217 | if (urb == NULL) { | |
441b62c1 | 218 | dbg("%s - no more free urbs", __func__); |
1da177e4 LT |
219 | goto exit; |
220 | } | |
221 | ||
222 | if (urb->transfer_buffer == NULL) { | |
223 | urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); | |
224 | if (urb->transfer_buffer == NULL) { | |
441b62c1 | 225 | dev_err(&port->dev, "%s no more kernel memory...\n", __func__); |
1da177e4 LT |
226 | goto exit; |
227 | } | |
228 | } | |
229 | ||
230 | transfer_size = min (count, URB_TRANSFER_BUFFER_SIZE); | |
231 | ||
232 | memcpy (urb->transfer_buffer, current_position, transfer_size); | |
233 | ||
441b62c1 | 234 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, urb->transfer_buffer); |
1da177e4 LT |
235 | |
236 | /* build up our urb */ | |
237 | usb_fill_bulk_urb ( | |
238 | urb, | |
239 | serial->dev, | |
240 | usb_sndbulkpipe(serial->dev, | |
241 | port->bulk_out_endpointAddress), | |
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; | |
1da177e4 LT |
263 | } |
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 LT |
274 | |
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) { | |
278 | if (write_urb_pool[i]->status != -EINPROGRESS) { | |
279 | room += URB_TRANSFER_BUFFER_SIZE; | |
280 | } | |
281 | } | |
1da177e4 | 282 | spin_unlock_irqrestore (&write_urb_pool_lock, flags); |
441b62c1 | 283 | dbg("%s - returns %d", __func__, room); |
95da310e | 284 | return room; |
1da177e4 LT |
285 | |
286 | } | |
287 | ||
288 | ||
95da310e | 289 | static int empeg_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 290 | { |
95da310e | 291 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
292 | unsigned long flags; |
293 | int i; | |
294 | int chars = 0; | |
295 | ||
441b62c1 | 296 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
297 | |
298 | spin_lock_irqsave (&write_urb_pool_lock, flags); | |
299 | ||
300 | /* tally up the number of bytes waiting */ | |
301 | for (i = 0; i < NUM_URBS; ++i) { | |
302 | if (write_urb_pool[i]->status == -EINPROGRESS) { | |
303 | chars += URB_TRANSFER_BUFFER_SIZE; | |
304 | } | |
305 | } | |
306 | ||
307 | spin_unlock_irqrestore (&write_urb_pool_lock, flags); | |
308 | ||
441b62c1 | 309 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
310 | |
311 | return (chars); | |
312 | ||
313 | } | |
314 | ||
315 | ||
7d12e780 | 316 | static void empeg_write_bulk_callback (struct urb *urb) |
1da177e4 | 317 | { |
335202f4 GKH |
318 | struct usb_serial_port *port = urb->context; |
319 | int status = urb->status; | |
1da177e4 | 320 | |
441b62c1 | 321 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 322 | |
335202f4 GKH |
323 | if (status) { |
324 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 325 | __func__, status); |
1da177e4 LT |
326 | return; |
327 | } | |
328 | ||
cf2c7481 | 329 | usb_serial_port_softint(port); |
1da177e4 LT |
330 | } |
331 | ||
332 | ||
7d12e780 | 333 | static void empeg_read_bulk_callback (struct urb *urb) |
1da177e4 | 334 | { |
cdc97792 | 335 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
336 | struct tty_struct *tty; |
337 | unsigned char *data = urb->transfer_buffer; | |
1da177e4 | 338 | int result; |
335202f4 | 339 | int status = urb->status; |
1da177e4 | 340 | |
441b62c1 | 341 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 342 | |
335202f4 GKH |
343 | if (status) { |
344 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 345 | __func__, status); |
1da177e4 LT |
346 | return; |
347 | } | |
348 | ||
441b62c1 | 349 | usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); |
1da177e4 | 350 | |
95da310e | 351 | tty = port->port.tty; |
1da177e4 LT |
352 | |
353 | if (urb->actual_length) { | |
33f0f88f AC |
354 | tty_buffer_request_room(tty, urb->actual_length); |
355 | tty_insert_flip_string(tty, data, urb->actual_length); | |
1da177e4 LT |
356 | tty_flip_buffer_push(tty); |
357 | bytes_in += urb->actual_length; | |
358 | } | |
359 | ||
360 | /* Continue trying to always read */ | |
361 | usb_fill_bulk_urb( | |
362 | port->read_urb, | |
363 | port->serial->dev, | |
364 | usb_rcvbulkpipe(port->serial->dev, | |
365 | port->bulk_in_endpointAddress), | |
366 | port->read_urb->transfer_buffer, | |
367 | port->read_urb->transfer_buffer_length, | |
368 | empeg_read_bulk_callback, | |
369 | port); | |
370 | ||
371 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
372 | ||
373 | if (result) | |
441b62c1 | 374 | dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __func__, result); |
1da177e4 LT |
375 | |
376 | return; | |
377 | ||
378 | } | |
379 | ||
380 | ||
95da310e | 381 | static void empeg_throttle(struct tty_struct *tty) |
1da177e4 | 382 | { |
95da310e | 383 | struct usb_serial_port *port = tty->driver_data; |
441b62c1 | 384 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
385 | usb_kill_urb(port->read_urb); |
386 | } | |
387 | ||
388 | ||
95da310e | 389 | static void empeg_unthrottle(struct tty_struct *tty) |
1da177e4 | 390 | { |
95da310e | 391 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 392 | int result; |
441b62c1 | 393 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
394 | |
395 | port->read_urb->dev = port->serial->dev; | |
1da177e4 | 396 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
1da177e4 | 397 | if (result) |
441b62c1 | 398 | dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result); |
1da177e4 LT |
399 | } |
400 | ||
401 | ||
402 | static int empeg_startup (struct usb_serial *serial) | |
403 | { | |
404 | int r; | |
405 | ||
441b62c1 | 406 | dbg("%s", __func__); |
1da177e4 LT |
407 | |
408 | if (serial->dev->actconfig->desc.bConfigurationValue != 1) { | |
409 | err("active config #%d != 1 ??", | |
410 | serial->dev->actconfig->desc.bConfigurationValue); | |
411 | return -ENODEV; | |
412 | } | |
441b62c1 | 413 | dbg("%s - reset config", __func__); |
1da177e4 LT |
414 | r = usb_reset_configuration (serial->dev); |
415 | ||
416 | /* continue on with initialization */ | |
417 | return r; | |
418 | ||
419 | } | |
420 | ||
421 | ||
422 | static void empeg_shutdown (struct usb_serial *serial) | |
423 | { | |
441b62c1 | 424 | dbg ("%s", __func__); |
1da177e4 LT |
425 | } |
426 | ||
427 | ||
95da310e AC |
428 | static void empeg_set_termios(struct tty_struct *tty, |
429 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 | 430 | { |
95da310e | 431 | struct ktermios *termios = tty->termios; |
441b62c1 | 432 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 433 | |
1da177e4 LT |
434 | /* |
435 | * The empeg-car player wants these particular tty settings. | |
436 | * You could, for example, change the baud rate, however the | |
437 | * player only supports 115200 (currently), so there is really | |
438 | * no point in support for changes to the tty settings. | |
439 | * (at least for now) | |
440 | * | |
441 | * The default requirements for this device are: | |
442 | */ | |
998e8638 | 443 | termios->c_iflag |
1da177e4 LT |
444 | &= ~(IGNBRK /* disable ignore break */ |
445 | | BRKINT /* disable break causes interrupt */ | |
446 | | PARMRK /* disable mark parity errors */ | |
447 | | ISTRIP /* disable clear high bit of input characters */ | |
448 | | INLCR /* disable translate NL to CR */ | |
449 | | IGNCR /* disable ignore CR */ | |
450 | | ICRNL /* disable translate CR to NL */ | |
451 | | IXON); /* disable enable XON/XOFF flow control */ | |
452 | ||
998e8638 | 453 | termios->c_oflag |
1da177e4 LT |
454 | &= ~OPOST; /* disable postprocess output characters */ |
455 | ||
998e8638 | 456 | termios->c_lflag |
1da177e4 LT |
457 | &= ~(ECHO /* disable echo input characters */ |
458 | | ECHONL /* disable echo new line */ | |
459 | | ICANON /* disable erase, kill, werase, and rprnt special characters */ | |
460 | | ISIG /* disable interrupt, quit, and suspend special characters */ | |
461 | | IEXTEN); /* disable non-POSIX special characters */ | |
462 | ||
998e8638 | 463 | termios->c_cflag |
1da177e4 LT |
464 | &= ~(CSIZE /* no size */ |
465 | | PARENB /* disable parity bit */ | |
466 | | CBAUD); /* clear current baud rate */ | |
467 | ||
998e8638 AC |
468 | termios->c_cflag |
469 | |= CS8; /* character size 8 bits */ | |
1da177e4 LT |
470 | |
471 | /* | |
472 | * Force low_latency on; otherwise the pushes are scheduled; | |
473 | * this is bad as it opens up the possibility of dropping bytes | |
474 | * on the floor. We don't want to drop bytes on the floor. :) | |
475 | */ | |
95da310e AC |
476 | tty->low_latency = 1; |
477 | tty_encode_baud_rate(tty, 115200, 115200); | |
1da177e4 LT |
478 | } |
479 | ||
480 | ||
481 | static int __init empeg_init (void) | |
482 | { | |
483 | struct urb *urb; | |
484 | int i, retval; | |
485 | ||
486 | /* create our write urb pool and transfer buffers */ | |
487 | spin_lock_init (&write_urb_pool_lock); | |
488 | for (i = 0; i < NUM_URBS; ++i) { | |
489 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
490 | write_urb_pool[i] = urb; | |
491 | if (urb == NULL) { | |
492 | err("No more urbs???"); | |
493 | continue; | |
494 | } | |
495 | ||
496 | urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
497 | if (!urb->transfer_buffer) { | |
498 | err("%s - out of memory for urb buffers.", | |
441b62c1 | 499 | __func__); |
1da177e4 LT |
500 | continue; |
501 | } | |
502 | } | |
503 | ||
504 | retval = usb_serial_register(&empeg_device); | |
505 | if (retval) | |
506 | goto failed_usb_serial_register; | |
507 | retval = usb_register(&empeg_driver); | |
508 | if (retval) | |
509 | goto failed_usb_register; | |
510 | ||
511 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
512 | ||
513 | return 0; | |
514 | failed_usb_register: | |
515 | usb_serial_deregister(&empeg_device); | |
516 | failed_usb_serial_register: | |
517 | for (i = 0; i < NUM_URBS; ++i) { | |
518 | if (write_urb_pool[i]) { | |
1bc3c9e1 | 519 | kfree(write_urb_pool[i]->transfer_buffer); |
1da177e4 LT |
520 | usb_free_urb(write_urb_pool[i]); |
521 | } | |
522 | } | |
523 | return retval; | |
524 | } | |
525 | ||
526 | ||
527 | static void __exit empeg_exit (void) | |
528 | { | |
529 | int i; | |
530 | unsigned long flags; | |
531 | ||
532 | usb_deregister(&empeg_driver); | |
533 | usb_serial_deregister (&empeg_device); | |
534 | ||
535 | spin_lock_irqsave (&write_urb_pool_lock, flags); | |
536 | ||
537 | for (i = 0; i < NUM_URBS; ++i) { | |
538 | if (write_urb_pool[i]) { | |
539 | /* FIXME - uncomment the following usb_kill_urb call when | |
540 | * the host controllers get fixed to set urb->dev = NULL after | |
541 | * the urb is finished. Otherwise this call oopses. */ | |
542 | /* usb_kill_urb(write_urb_pool[i]); */ | |
1bc3c9e1 | 543 | kfree(write_urb_pool[i]->transfer_buffer); |
1da177e4 LT |
544 | usb_free_urb (write_urb_pool[i]); |
545 | } | |
546 | } | |
547 | ||
548 | spin_unlock_irqrestore (&write_urb_pool_lock, flags); | |
549 | } | |
550 | ||
551 | ||
552 | module_init(empeg_init); | |
553 | module_exit(empeg_exit); | |
554 | ||
555 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
556 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
557 | MODULE_LICENSE("GPL"); | |
558 | ||
559 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
560 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |