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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / usb / serial / visor.c
blob4412834db21c5a1b5fb5c9a6b8346a27410636dd
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * USB HandSpring Visor, Palm m50x, and Sony Clie driver
4 * (supports all of the Palm OS USB devices)
5 *
6 * Copyright (C) 1999 - 2004
7 * Greg Kroah-Hartman (greg@kroah.com)
8 *
9 * See Documentation/usb/usb-serial.rst for more information on using this
10 * driver
11 *
12 */
13
14 #include <linux/kernel.h>
15 #include <linux/errno.h>
16 #include <linux/slab.h>
17 #include <linux/tty.h>
18 #include <linux/tty_driver.h>
19 #include <linux/tty_flip.h>
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/spinlock.h>
23 #include <linux/uaccess.h>
24 #include <linux/usb.h>
25 #include <linux/usb/serial.h>
26 #include <linux/usb/cdc.h>
27 #include "visor.h"
28
29 /*
30 * Version Information
31 */
32 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
33 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
34
35 /* function prototypes for a handspring visor */
36 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port);
37 static void visor_close(struct usb_serial_port *port);
38 static int visor_probe(struct usb_serial *serial,
39 const struct usb_device_id *id);
40 static int visor_calc_num_ports(struct usb_serial *serial,
41 struct usb_serial_endpoints *epds);
42 static int clie_5_calc_num_ports(struct usb_serial *serial,
43 struct usb_serial_endpoints *epds);
44 static void visor_read_int_callback(struct urb *urb);
45 static int clie_3_5_startup(struct usb_serial *serial);
46 static int palm_os_3_probe(struct usb_serial *serial,
47 const struct usb_device_id *id);
48 static int palm_os_4_probe(struct usb_serial *serial,
49 const struct usb_device_id *id);
50
51 static const struct usb_device_id id_table[] = {
52 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
53 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
54 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
55 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
56 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
57 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
58 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
59 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
60 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
61 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
62 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
63 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
64 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
65 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
66 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
67 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
68 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
69 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
70 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
71 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
72 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
73 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
74 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
75 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
76 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
77 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
78 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
79 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
80 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
81 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
82 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
83 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
84 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
85 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
86 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
87 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
88 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
89 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
90 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
91 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
92 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
93 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
94 { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
95 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
96 { USB_DEVICE_INTERFACE_CLASS(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID, 0xff),
97 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
98 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
99 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
100 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
101 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
102 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
103 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
104 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
105 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
106 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
107 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
108 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
109 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
110 { } /* Terminating entry */
111 };
112
113 static const struct usb_device_id clie_id_5_table[] = {
114 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
115 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
116 { } /* Terminating entry */
117 };
118
119 static const struct usb_device_id clie_id_3_5_table[] = {
120 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
121 { } /* Terminating entry */
122 };
123
124 static const struct usb_device_id id_table_combined[] = {
125 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
126 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
127 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
128 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
129 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
130 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
131 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
132 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
133 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
134 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
135 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
136 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
137 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
138 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
139 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
140 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
141 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
142 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
143 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
144 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
145 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
146 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
147 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
148 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
149 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
150 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
151 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
152 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
153 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
154 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
155 { } /* Terminating entry */
156 };
157
158 MODULE_DEVICE_TABLE(usb, id_table_combined);
159
160 /* All of the device info needed for the Handspring Visor,
161 and Palm 4.0 devices */
162 static struct usb_serial_driver handspring_device = {
163 .driver = {
164 .owner = THIS_MODULE,
165 .name = "visor",
166 },
167 .description = "Handspring Visor / Palm OS",
168 .id_table = id_table,
169 .num_ports = 2,
170 .bulk_out_size = 256,
171 .open = visor_open,
172 .close = visor_close,
173 .throttle = usb_serial_generic_throttle,
174 .unthrottle = usb_serial_generic_unthrottle,
175 .probe = visor_probe,
176 .calc_num_ports = visor_calc_num_ports,
177 .read_int_callback = visor_read_int_callback,
178 };
179
180 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
181 static struct usb_serial_driver clie_5_device = {
182 .driver = {
183 .owner = THIS_MODULE,
184 .name = "clie_5",
185 },
186 .description = "Sony Clie 5.0",
187 .id_table = clie_id_5_table,
188 .num_ports = 2,
189 .num_bulk_out = 2,
190 .bulk_out_size = 256,
191 .open = visor_open,
192 .close = visor_close,
193 .throttle = usb_serial_generic_throttle,
194 .unthrottle = usb_serial_generic_unthrottle,
195 .probe = visor_probe,
196 .calc_num_ports = clie_5_calc_num_ports,
197 .read_int_callback = visor_read_int_callback,
198 };
199
200 /* device info for the Sony Clie OS version 3.5 */
201 static struct usb_serial_driver clie_3_5_device = {
202 .driver = {
203 .owner = THIS_MODULE,
204 .name = "clie_3.5",
205 },
206 .description = "Sony Clie 3.5",
207 .id_table = clie_id_3_5_table,
208 .num_ports = 1,
209 .bulk_out_size = 256,
210 .open = visor_open,
211 .close = visor_close,
212 .throttle = usb_serial_generic_throttle,
213 .unthrottle = usb_serial_generic_unthrottle,
214 .attach = clie_3_5_startup,
215 };
216
217 static struct usb_serial_driver * const serial_drivers[] = {
218 &handspring_device, &clie_5_device, &clie_3_5_device, NULL
219 };
220
221 /******************************************************************************
222 * Handspring Visor specific driver functions
223 ******************************************************************************/
224 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
225 {
226 int result = 0;
227
228 if (!port->read_urb) {
229 /* this is needed for some brain dead Sony devices */
230 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
231 return -ENODEV;
232 }
233
234 /* Start reading from the device */
235 result = usb_serial_generic_open(tty, port);
236 if (result)
237 goto exit;
238
239 if (port->interrupt_in_urb) {
240 dev_dbg(&port->dev, "adding interrupt input for treo\n");
241 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
242 if (result)
243 dev_err(&port->dev,
244 "%s - failed submitting interrupt urb, error %d\n",
245 __func__, result);
246 }
247 exit:
248 return result;
249 }
250
251
252 static void visor_close(struct usb_serial_port *port)
253 {
254 unsigned char *transfer_buffer;
255
256 usb_serial_generic_close(port);
257 usb_kill_urb(port->interrupt_in_urb);
258
259 transfer_buffer = kmalloc(0x12, GFP_KERNEL);
260 if (!transfer_buffer)
261 return;
262 usb_control_msg(port->serial->dev,
263 usb_rcvctrlpipe(port->serial->dev, 0),
264 VISOR_CLOSE_NOTIFICATION, 0xc2,
265 0x0000, 0x0000,
266 transfer_buffer, 0x12, 300);
267 kfree(transfer_buffer);
268 }
269
270 static void visor_read_int_callback(struct urb *urb)
271 {
272 struct usb_serial_port *port = urb->context;
273 int status = urb->status;
274 int result;
275
276 switch (status) {
277 case 0:
278 /* success */
279 break;
280 case -ECONNRESET:
281 case -ENOENT:
282 case -ESHUTDOWN:
283 /* this urb is terminated, clean up */
284 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
285 __func__, status);
286 return;
287 default:
288 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
289 __func__, status);
290 goto exit;
291 }
292
293 /*
294 * This information is still unknown what it can be used for.
295 * If anyone has an idea, please let the author know...
296 *
297 * Rumor has it this endpoint is used to notify when data
298 * is ready to be read from the bulk ones.
299 */
300 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
301 urb->transfer_buffer);
302
303 exit:
304 result = usb_submit_urb(urb, GFP_ATOMIC);
305 if (result)
306 dev_err(&urb->dev->dev,
307 "%s - Error %d submitting interrupt urb\n",
308 __func__, result);
309 }
310
311 static int palm_os_3_probe(struct usb_serial *serial,
312 const struct usb_device_id *id)
313 {
314 struct device *dev = &serial->dev->dev;
315 struct visor_connection_info *connection_info;
316 unsigned char *transfer_buffer;
317 char *string;
318 int retval = 0;
319 int i;
320 int num_ports = 0;
321
322 transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
323 if (!transfer_buffer)
324 return -ENOMEM;
325
326 /* send a get connection info request */
327 retval = usb_control_msg(serial->dev,
328 usb_rcvctrlpipe(serial->dev, 0),
329 VISOR_GET_CONNECTION_INFORMATION,
330 0xc2, 0x0000, 0x0000, transfer_buffer,
331 sizeof(*connection_info), 300);
332 if (retval < 0) {
333 dev_err(dev, "%s - error %d getting connection information\n",
334 __func__, retval);
335 goto exit;
336 }
337
338 if (retval != sizeof(*connection_info)) {
339 dev_err(dev, "Invalid connection information received from device\n");
340 retval = -ENODEV;
341 goto exit;
342 }
343
344 connection_info = (struct visor_connection_info *)transfer_buffer;
345
346 num_ports = le16_to_cpu(connection_info->num_ports);
347
348 /* Handle devices that report invalid stuff here. */
349 if (num_ports == 0 || num_ports > 2) {
350 dev_warn(dev, "%s: No valid connect info available\n",
351 serial->type->description);
352 num_ports = 2;
353 }
354
355 for (i = 0; i < num_ports; ++i) {
356 switch (connection_info->connections[i].port_function_id) {
357 case VISOR_FUNCTION_GENERIC:
358 string = "Generic";
359 break;
360 case VISOR_FUNCTION_DEBUGGER:
361 string = "Debugger";
362 break;
363 case VISOR_FUNCTION_HOTSYNC:
364 string = "HotSync";
365 break;
366 case VISOR_FUNCTION_CONSOLE:
367 string = "Console";
368 break;
369 case VISOR_FUNCTION_REMOTE_FILE_SYS:
370 string = "Remote File System";
371 break;
372 default:
373 string = "unknown";
374 break;
375 }
376 dev_info(dev, "%s: port %d, is for %s use\n",
377 serial->type->description,
378 connection_info->connections[i].port, string);
379 }
380 dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
381 num_ports);
382
383 /*
384 * save off our num_ports info so that we can use it in the
385 * calc_num_ports callback
386 */
387 usb_set_serial_data(serial, (void *)(long)num_ports);
388
389 /* ask for the number of bytes available, but ignore the
390 response as it is broken */
391 retval = usb_control_msg(serial->dev,
392 usb_rcvctrlpipe(serial->dev, 0),
393 VISOR_REQUEST_BYTES_AVAILABLE,
394 0xc2, 0x0000, 0x0005, transfer_buffer,
395 0x02, 300);
396 if (retval < 0)
397 dev_err(dev, "%s - error %d getting bytes available request\n",
398 __func__, retval);
399 retval = 0;
400
401 exit:
402 kfree(transfer_buffer);
403
404 return retval;
405 }
406
407 static int palm_os_4_probe(struct usb_serial *serial,
408 const struct usb_device_id *id)
409 {
410 struct device *dev = &serial->dev->dev;
411 struct palm_ext_connection_info *connection_info;
412 unsigned char *transfer_buffer;
413 int retval;
414
415 transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
416 if (!transfer_buffer)
417 return -ENOMEM;
418
419 retval = usb_control_msg(serial->dev,
420 usb_rcvctrlpipe(serial->dev, 0),
421 PALM_GET_EXT_CONNECTION_INFORMATION,
422 0xc2, 0x0000, 0x0000, transfer_buffer,
423 sizeof(*connection_info), 300);
424 if (retval < 0)
425 dev_err(dev, "%s - error %d getting connection info\n",
426 __func__, retval);
427 else
428 usb_serial_debug_data(dev, __func__, retval, transfer_buffer);
429
430 kfree(transfer_buffer);
431 return 0;
432 }
433
434
435 static int visor_probe(struct usb_serial *serial,
436 const struct usb_device_id *id)
437 {
438 int retval = 0;
439 int (*startup)(struct usb_serial *serial,
440 const struct usb_device_id *id);
441
442 /*
443 * some Samsung Android phones in modem mode have the same ID
444 * as SPH-I500, but they are ACM devices, so dont bind to them
445 */
446 if (id->idVendor == SAMSUNG_VENDOR_ID &&
447 id->idProduct == SAMSUNG_SPH_I500_ID &&
448 serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
449 serial->dev->descriptor.bDeviceSubClass ==
450 USB_CDC_SUBCLASS_ACM)
451 return -ENODEV;
452
453 if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
454 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
455 serial->dev->actconfig->desc.bConfigurationValue);
456 return -ENODEV;
457 }
458
459 if (id->driver_info) {
460 startup = (void *)id->driver_info;
461 retval = startup(serial, id);
462 }
463
464 return retval;
465 }
466
467 static int visor_calc_num_ports(struct usb_serial *serial,
468 struct usb_serial_endpoints *epds)
469 {
470 unsigned int vid = le16_to_cpu(serial->dev->descriptor.idVendor);
471 int num_ports = (int)(long)(usb_get_serial_data(serial));
472
473 if (num_ports)
474 usb_set_serial_data(serial, NULL);
475
476 /*
477 * Only swap the bulk endpoints for the Handspring devices with
478 * interrupt in endpoints, which for now are the Treo devices.
479 */
480 if (!(vid == HANDSPRING_VENDOR_ID || vid == KYOCERA_VENDOR_ID) ||
481 epds->num_interrupt_in == 0)
482 goto out;
483
484 if (epds->num_bulk_in < 2 || epds->num_interrupt_in < 2) {
485 dev_err(&serial->interface->dev, "missing endpoints\n");
486 return -ENODEV;
487 }
488
489 /*
490 * It appears that Treos and Kyoceras want to use the
491 * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
492 * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
493 * Note that swapping the bulk out endpoints would break lots of
494 * apps that want to communicate on the second port.
495 */
496 swap(epds->bulk_in[0], epds->bulk_in[1]);
497 swap(epds->interrupt_in[0], epds->interrupt_in[1]);
498 out:
499 return num_ports;
500 }
501
502 static int clie_5_calc_num_ports(struct usb_serial *serial,
503 struct usb_serial_endpoints *epds)
504 {
505 /*
506 * TH55 registers 2 ports.
507 * Communication in from the UX50/TH55 uses the first bulk-in
508 * endpoint, while communication out to the UX50/TH55 uses the second
509 * bulk-out endpoint.
510 */
511
512 /*
513 * FIXME: Should we swap the descriptors instead of using the same
514 * bulk-out endpoint for both ports?
515 */
516 epds->bulk_out[0] = epds->bulk_out[1];
517
518 return serial->type->num_ports;
519 }
520
521 static int clie_3_5_startup(struct usb_serial *serial)
522 {
523 struct device *dev = &serial->dev->dev;
524 int result;
525 u8 *data;
526
527 data = kmalloc(1, GFP_KERNEL);
528 if (!data)
529 return -ENOMEM;
530
531 /*
532 * Note that PEG-300 series devices expect the following two calls.
533 */
534
535 /* get the config number */
536 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
537 USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
538 0, 0, data, 1, 3000);
539 if (result < 0) {
540 dev_err(dev, "%s: get config number failed: %d\n",
541 __func__, result);
542 goto out;
543 }
544 if (result != 1) {
545 dev_err(dev, "%s: get config number bad return length: %d\n",
546 __func__, result);
547 result = -EIO;
548 goto out;
549 }
550
551 /* get the interface number */
552 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
553 USB_REQ_GET_INTERFACE,
554 USB_DIR_IN | USB_RECIP_INTERFACE,
555 0, 0, data, 1, 3000);
556 if (result < 0) {
557 dev_err(dev, "%s: get interface number failed: %d\n",
558 __func__, result);
559 goto out;
560 }
561 if (result != 1) {
562 dev_err(dev,
563 "%s: get interface number bad return length: %d\n",
564 __func__, result);
565 result = -EIO;
566 goto out;
567 }
568
569 result = 0;
570 out:
571 kfree(data);
572
573 return result;
574 }
575
576 module_usb_serial_driver(serial_drivers, id_table_combined);
577
578 MODULE_AUTHOR(DRIVER_AUTHOR);
579 MODULE_DESCRIPTION(DRIVER_DESC);
580 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support