1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 * usb_intf.c
4 *
5 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
6 * Linux device driver for RTL8192SU
7 *
8 * Modifications for inclusion into the Linux staging tree are
9 * Copyright(c) 2010 Larry Finger. All rights reserved.
10 *
11 * Contact information:
12 * WLAN FAE <wlanfae@realtek.com>
13 * Larry Finger <Larry.Finger@lwfinger.net>
14 *
15 ******************************************************************************/
16
17 #define _HCI_INTF_C_
18
19 #include <linux/usb.h>
20 #include <linux/module.h>
21 #include <linux/firmware.h>
22
23 #include "osdep_service.h"
24 #include "drv_types.h"
25 #include "recv_osdep.h"
26 #include "xmit_osdep.h"
27 #include "rtl8712_efuse.h"
28 #include "usb_ops.h"
29 #include "usb_osintf.h"
30
31 static struct usb_interface *pintf;
32
33 static int r871xu_drv_init(struct usb_interface *pusb_intf,
34 const struct usb_device_id *pdid);
35
36 static void r871xu_dev_remove(struct usb_interface *pusb_intf);
37
38 static const struct usb_device_id rtl871x_usb_id_tbl[] = {
39 /* RTL8188SU */
40 /* Realtek */
41 {USB_DEVICE(0x0BDA, 0x8171)},
42 {USB_DEVICE(0x0bda, 0x8173)},
43 {USB_DEVICE(0x0bda, 0x8712)},
44 {USB_DEVICE(0x0bda, 0x8713)},
45 {USB_DEVICE(0x0bda, 0xC512)},
46 /* Abocom */
47 {USB_DEVICE(0x07B8, 0x8188)},
48 /* ASUS */
49 {USB_DEVICE(0x0B05, 0x1786)},
50 {USB_DEVICE(0x0B05, 0x1791)}, /* 11n mode disable */
51 /* Belkin */
52 {USB_DEVICE(0x050D, 0x945A)},
53 /* ISY IWL - Belkin clone */
54 {USB_DEVICE(0x050D, 0x11F1)},
55 /* Corega */
56 {USB_DEVICE(0x07AA, 0x0047)},
57 /* D-Link */
58 {USB_DEVICE(0x2001, 0x3306)},
59 {USB_DEVICE(0x07D1, 0x3306)}, /* 11n mode disable */
60 /* Edimax */
61 {USB_DEVICE(0x7392, 0x7611)},
62 /* EnGenius */
63 {USB_DEVICE(0x1740, 0x9603)},
64 /* Hawking */
65 {USB_DEVICE(0x0E66, 0x0016)},
66 /* Hercules */
67 {USB_DEVICE(0x06F8, 0xE034)},
68 {USB_DEVICE(0x06F8, 0xE032)},
69 /* Logitec */
70 {USB_DEVICE(0x0789, 0x0167)},
71 /* PCI */
72 {USB_DEVICE(0x2019, 0xAB28)},
73 {USB_DEVICE(0x2019, 0xED16)},
74 /* Sitecom */
75 {USB_DEVICE(0x0DF6, 0x0057)},
76 {USB_DEVICE(0x0DF6, 0x0045)},
77 {USB_DEVICE(0x0DF6, 0x0059)}, /* 11n mode disable */
78 {USB_DEVICE(0x0DF6, 0x004B)},
79 {USB_DEVICE(0x0DF6, 0x005B)},
80 {USB_DEVICE(0x0DF6, 0x005D)},
81 {USB_DEVICE(0x0DF6, 0x0063)},
82 /* Sweex */
83 {USB_DEVICE(0x177F, 0x0154)},
84 /* Thinkware */
85 {USB_DEVICE(0x0BDA, 0x5077)},
86 /* Toshiba */
87 {USB_DEVICE(0x1690, 0x0752)},
88 /* - */
89 {USB_DEVICE(0x20F4, 0x646B)},
90 {USB_DEVICE(0x083A, 0xC512)},
91 {USB_DEVICE(0x25D4, 0x4CA1)},
92 {USB_DEVICE(0x25D4, 0x4CAB)},
93
94 /* RTL8191SU */
95 /* Realtek */
96 {USB_DEVICE(0x0BDA, 0x8172)},
97 {USB_DEVICE(0x0BDA, 0x8192)},
98 /* Amigo */
99 {USB_DEVICE(0x0EB0, 0x9061)},
100 /* ASUS/EKB */
101 {USB_DEVICE(0x13D3, 0x3323)},
102 {USB_DEVICE(0x13D3, 0x3311)}, /* 11n mode disable */
103 {USB_DEVICE(0x13D3, 0x3342)},
104 /* ASUS/EKBLenovo */
105 {USB_DEVICE(0x13D3, 0x3333)},
106 {USB_DEVICE(0x13D3, 0x3334)},
107 {USB_DEVICE(0x13D3, 0x3335)}, /* 11n mode disable */
108 {USB_DEVICE(0x13D3, 0x3336)}, /* 11n mode disable */
109 /* ASUS/Media BOX */
110 {USB_DEVICE(0x13D3, 0x3309)},
111 /* Belkin */
112 {USB_DEVICE(0x050D, 0x815F)},
113 /* D-Link */
114 {USB_DEVICE(0x07D1, 0x3302)},
115 {USB_DEVICE(0x07D1, 0x3300)},
116 {USB_DEVICE(0x07D1, 0x3303)},
117 /* Edimax */
118 {USB_DEVICE(0x7392, 0x7612)},
119 /* EnGenius */
120 {USB_DEVICE(0x1740, 0x9605)},
121 /* Guillemot */
122 {USB_DEVICE(0x06F8, 0xE031)},
123 /* Hawking */
124 {USB_DEVICE(0x0E66, 0x0015)},
125 /* Mediao */
126 {USB_DEVICE(0x13D3, 0x3306)},
127 /* PCI */
128 {USB_DEVICE(0x2019, 0xED18)},
129 {USB_DEVICE(0x2019, 0x4901)},
130 /* Sitecom */
131 {USB_DEVICE(0x0DF6, 0x0058)},
132 {USB_DEVICE(0x0DF6, 0x0049)},
133 {USB_DEVICE(0x0DF6, 0x004C)},
134 {USB_DEVICE(0x0DF6, 0x006C)},
135 {USB_DEVICE(0x0DF6, 0x0064)},
136 /* Skyworth */
137 {USB_DEVICE(0x14b2, 0x3300)},
138 {USB_DEVICE(0x14b2, 0x3301)},
139 {USB_DEVICE(0x14B2, 0x3302)},
140 /* - */
141 {USB_DEVICE(0x04F2, 0xAFF2)},
142 {USB_DEVICE(0x04F2, 0xAFF5)},
143 {USB_DEVICE(0x04F2, 0xAFF6)},
144 {USB_DEVICE(0x13D3, 0x3339)},
145 {USB_DEVICE(0x13D3, 0x3340)}, /* 11n mode disable */
146 {USB_DEVICE(0x13D3, 0x3341)}, /* 11n mode disable */
147 {USB_DEVICE(0x13D3, 0x3310)},
148 {USB_DEVICE(0x13D3, 0x3325)},
149
150 /* RTL8192SU */
151 /* Realtek */
152 {USB_DEVICE(0x0BDA, 0x8174)},
153 /* Belkin */
154 {USB_DEVICE(0x050D, 0x845A)},
155 /* Corega */
156 {USB_DEVICE(0x07AA, 0x0051)},
157 /* Edimax */
158 {USB_DEVICE(0x7392, 0x7622)},
159 /* NEC */
160 {USB_DEVICE(0x0409, 0x02B6)},
161 {}
162 };
163
164 MODULE_DEVICE_TABLE(usb, rtl871x_usb_id_tbl);
165
166 static struct specific_device_id specific_device_id_tbl[] = {
167 {.idVendor = 0x0b05, .idProduct = 0x1791,
168 .flags = SPEC_DEV_ID_DISABLE_HT},
169 {.idVendor = 0x0df6, .idProduct = 0x0059,
170 .flags = SPEC_DEV_ID_DISABLE_HT},
171 {.idVendor = 0x13d3, .idProduct = 0x3306,
172 .flags = SPEC_DEV_ID_DISABLE_HT},
173 {.idVendor = 0x13D3, .idProduct = 0x3311,
174 .flags = SPEC_DEV_ID_DISABLE_HT},
175 {.idVendor = 0x13d3, .idProduct = 0x3335,
176 .flags = SPEC_DEV_ID_DISABLE_HT},
177 {.idVendor = 0x13d3, .idProduct = 0x3336,
178 .flags = SPEC_DEV_ID_DISABLE_HT},
179 {.idVendor = 0x13d3, .idProduct = 0x3340,
180 .flags = SPEC_DEV_ID_DISABLE_HT},
181 {.idVendor = 0x13d3, .idProduct = 0x3341,
182 .flags = SPEC_DEV_ID_DISABLE_HT},
183 {}
184 };
185
186 struct drv_priv {
187 struct usb_driver r871xu_drv;
188 int drv_registered;
189 };
190
191 #ifdef CONFIG_PM
r871x_suspend(struct usb_interface * pusb_intf,pm_message_t state)192 static int r871x_suspend(struct usb_interface *pusb_intf, pm_message_t state)
193 {
194 struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
195 struct _adapter *padapter = netdev_priv(pnetdev);
196
197 netdev_info(pnetdev, "Suspending...\n");
198 padapter->suspended = true;
199 rtl871x_intf_stop(padapter);
200 if (pnetdev->netdev_ops->ndo_stop)
201 pnetdev->netdev_ops->ndo_stop(pnetdev);
202 mdelay(10);
203 netif_device_detach(pnetdev);
204 return 0;
205 }
206
rtl871x_intf_resume(struct _adapter * padapter)207 static void rtl871x_intf_resume(struct _adapter *padapter)
208 {
209 if (padapter->dvobjpriv.inirp_init)
210 padapter->dvobjpriv.inirp_init(padapter);
211 }
212
r871x_resume(struct usb_interface * pusb_intf)213 static int r871x_resume(struct usb_interface *pusb_intf)
214 {
215 struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
216 struct _adapter *padapter = netdev_priv(pnetdev);
217
218 netdev_info(pnetdev, "Resuming...\n");
219 netif_device_attach(pnetdev);
220 if (pnetdev->netdev_ops->ndo_open)
221 pnetdev->netdev_ops->ndo_open(pnetdev);
222 padapter->suspended = false;
223 rtl871x_intf_resume(padapter);
224 return 0;
225 }
226 #endif
227
228 static struct drv_priv drvpriv = {
229 .r871xu_drv.name = "r8712u",
230 .r871xu_drv.id_table = rtl871x_usb_id_tbl,
231 .r871xu_drv.probe = r871xu_drv_init,
232 .r871xu_drv.disconnect = r871xu_dev_remove,
233 #ifdef CONFIG_PM
234 .r871xu_drv.suspend = r871x_suspend,
235 .r871xu_drv.resume = r871x_resume,
236 #endif
237 };
238
r8712_usb_dvobj_init(struct _adapter * padapter)239 static uint r8712_usb_dvobj_init(struct _adapter *padapter)
240 {
241 uint status = _SUCCESS;
242 struct usb_host_interface *phost_iface;
243 struct usb_interface_descriptor *piface_desc;
244 struct dvobj_priv *pdvobjpriv = &padapter->dvobjpriv;
245 struct usb_device *pusbd = pdvobjpriv->pusbdev;
246
247 pdvobjpriv->padapter = padapter;
248 padapter->eeprom_address_size = 6;
249 phost_iface = pintf->cur_altsetting;
250 piface_desc = &phost_iface->desc;
251 pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;
252 if (pusbd->speed == USB_SPEED_HIGH) {
253 pdvobjpriv->ishighspeed = true;
254 dev_info(&pusbd->dev, "r8712u: USB_SPEED_HIGH with %d endpoints\n",
255 pdvobjpriv->nr_endpoint);
256 } else {
257 pdvobjpriv->ishighspeed = false;
258 dev_info(&pusbd->dev, "r8712u: USB_SPEED_LOW with %d endpoints\n",
259 pdvobjpriv->nr_endpoint);
260 }
261 if ((r8712_alloc_io_queue(padapter)) == _FAIL)
262 status = _FAIL;
263 return status;
264 }
265
r8712_usb_dvobj_deinit(struct _adapter * padapter)266 static void r8712_usb_dvobj_deinit(struct _adapter *padapter)
267 {
268 r8712_free_io_queue(padapter);
269 }
270
rtl871x_intf_stop(struct _adapter * padapter)271 void rtl871x_intf_stop(struct _adapter *padapter)
272 {
273 /*disable_hw_interrupt*/
274 if (!padapter->surprise_removed) {
275 /*device still exists, so driver can do i/o operation
276 * TODO:
277 */
278 }
279
280 /* cancel in irp */
281 if (padapter->dvobjpriv.inirp_deinit)
282 padapter->dvobjpriv.inirp_deinit(padapter);
283 /* cancel out irp */
284 r8712_usb_write_port_cancel(padapter);
285 /* TODO:cancel other irps */
286 }
287
r871x_dev_unload(struct _adapter * padapter)288 void r871x_dev_unload(struct _adapter *padapter)
289 {
290 if (padapter->bup) {
291 /*s1.*/
292 padapter->driver_stopped = true;
293
294 /*s3.*/
295 rtl871x_intf_stop(padapter);
296
297 /*s4.*/
298 r8712_stop_drv_threads(padapter);
299
300 /*s5.*/
301 if (!padapter->surprise_removed) {
302 padapter->hw_init_completed = false;
303 rtl8712_hal_deinit(padapter);
304 }
305
306 padapter->bup = false;
307 }
308 }
309
disable_ht_for_spec_devid(const struct usb_device_id * pdid,struct _adapter * padapter)310 static void disable_ht_for_spec_devid(const struct usb_device_id *pdid,
311 struct _adapter *padapter)
312 {
313 u16 vid, pid;
314 u32 flags;
315 int i;
316 int num = ARRAY_SIZE(specific_device_id_tbl);
317
318 for (i = 0; i < num; i++) {
319 vid = specific_device_id_tbl[i].idVendor;
320 pid = specific_device_id_tbl[i].idProduct;
321 flags = specific_device_id_tbl[i].flags;
322
323 if ((pdid->idVendor == vid) && (pdid->idProduct == pid) &&
324 (flags & SPEC_DEV_ID_DISABLE_HT)) {
325 padapter->registrypriv.ht_enable = 0;
326 padapter->registrypriv.cbw40_enable = 0;
327 padapter->registrypriv.ampdu_enable = 0;
328 }
329 }
330 }
331
332 static const struct device_type wlan_type = {
333 .name = "wlan",
334 };
335
336 /*
337 * drv_init() - a device potentially for us
338 *
339 * notes: drv_init() is called when the bus driver has located a card for us
340 * to support. We accept the new device by returning 0.
341 */
r871xu_drv_init(struct usb_interface * pusb_intf,const struct usb_device_id * pdid)342 static int r871xu_drv_init(struct usb_interface *pusb_intf,
343 const struct usb_device_id *pdid)
344 {
345 uint status;
346 struct _adapter *padapter = NULL;
347 struct dvobj_priv *pdvobjpriv;
348 struct net_device *pnetdev;
349 struct usb_device *udev;
350
351 /* In this probe function, O.S. will provide the usb interface pointer
352 * to driver. We have to increase the reference count of the usb device
353 * structure by using the usb_get_dev function.
354 */
355 udev = interface_to_usbdev(pusb_intf);
356 usb_get_dev(udev);
357 pintf = pusb_intf;
358 /* step 1. */
359 pnetdev = r8712_init_netdev();
360 if (!pnetdev)
361 goto put_dev;
362 padapter = netdev_priv(pnetdev);
363 disable_ht_for_spec_devid(pdid, padapter);
364 pdvobjpriv = &padapter->dvobjpriv;
365 pdvobjpriv->padapter = padapter;
366 padapter->dvobjpriv.pusbdev = udev;
367 padapter->pusb_intf = pusb_intf;
368 usb_set_intfdata(pusb_intf, pnetdev);
369 SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
370 pnetdev->dev.type = &wlan_type;
371 /* step 2. */
372 padapter->dvobj_init = r8712_usb_dvobj_init;
373 padapter->dvobj_deinit = r8712_usb_dvobj_deinit;
374 padapter->halpriv.hal_bus_init = r8712_usb_hal_bus_init;
375 padapter->dvobjpriv.inirp_init = r8712_usb_inirp_init;
376 padapter->dvobjpriv.inirp_deinit = r8712_usb_inirp_deinit;
377 /* step 3.
378 * initialize the dvobj_priv
379 */
380
381 status = padapter->dvobj_init(padapter);
382 if (status != _SUCCESS)
383 goto free_netdev;
384
385 /* step 4. */
386 status = r8712_init_drv_sw(padapter);
387 if (status)
388 goto dvobj_deinit;
389 /* step 5. read efuse/eeprom data and get mac_addr */
390 {
391 int i, offset;
392 u8 mac[6];
393 u8 tmpU1b, AutoloadFail, eeprom_CustomerID;
394 u8 *pdata = padapter->eeprompriv.efuse_eeprom_data;
395
396 tmpU1b = r8712_read8(padapter, EE_9346CR);/*CR9346*/
397
398 /* To check system boot selection.*/
399 dev_info(&udev->dev, "r8712u: Boot from %s: Autoload %s\n",
400 (tmpU1b & _9356SEL) ? "EEPROM" : "EFUSE",
401 (tmpU1b & _EEPROM_EN) ? "OK" : "Failed");
402
403 /* To check autoload success or not.*/
404 if (tmpU1b & _EEPROM_EN) {
405 AutoloadFail = true;
406 /* The following operations prevent Efuse leakage by
407 * turning on 2.5V.
408 */
409 tmpU1b = r8712_read8(padapter, EFUSE_TEST + 3);
410 r8712_write8(padapter, EFUSE_TEST + 3, tmpU1b | 0x80);
411 msleep(20);
412 r8712_write8(padapter, EFUSE_TEST + 3,
413 (tmpU1b & (~BIT(7))));
414
415 /* Retrieve Chip version.
416 * Recognize IC version by Reg0x4 BIT15.
417 */
418 tmpU1b = (u8)((r8712_read32(padapter, PMC_FSM) >> 15) &
419 0x1F);
420 if (tmpU1b == 0x3)
421 padapter->registrypriv.chip_version =
422 RTL8712_3rdCUT;
423 else
424 padapter->registrypriv.chip_version =
425 (tmpU1b >> 1) + 1;
426 switch (padapter->registrypriv.chip_version) {
427 case RTL8712_1stCUT:
428 case RTL8712_2ndCUT:
429 case RTL8712_3rdCUT:
430 break;
431 default:
432 padapter->registrypriv.chip_version =
433 RTL8712_2ndCUT;
434 break;
435 }
436
437 for (i = 0, offset = 0; i < 128; i += 8, offset++)
438 r8712_efuse_pg_packet_read(padapter, offset,
439 &pdata[i]);
440
441 if (!r8712_initmac || !mac_pton(r8712_initmac, mac)) {
442 /* Use the mac address stored in the Efuse
443 * offset = 0x12 for usb in efuse
444 */
445 ether_addr_copy(mac, &pdata[0x12]);
446 }
447 eeprom_CustomerID = pdata[0x52];
448 switch (eeprom_CustomerID) {
449 case EEPROM_CID_ALPHA:
450 padapter->eeprompriv.CustomerID =
451 RT_CID_819x_ALPHA;
452 break;
453 case EEPROM_CID_CAMEO:
454 padapter->eeprompriv.CustomerID =
455 RT_CID_819x_CAMEO;
456 break;
457 case EEPROM_CID_SITECOM:
458 padapter->eeprompriv.CustomerID =
459 RT_CID_819x_Sitecom;
460 break;
461 case EEPROM_CID_COREGA:
462 padapter->eeprompriv.CustomerID =
463 RT_CID_COREGA;
464 break;
465 case EEPROM_CID_Senao:
466 padapter->eeprompriv.CustomerID =
467 RT_CID_819x_Senao;
468 break;
469 case EEPROM_CID_EDIMAX_BELKIN:
470 padapter->eeprompriv.CustomerID =
471 RT_CID_819x_Edimax_Belkin;
472 break;
473 case EEPROM_CID_SERCOMM_BELKIN:
474 padapter->eeprompriv.CustomerID =
475 RT_CID_819x_Sercomm_Belkin;
476 break;
477 case EEPROM_CID_WNC_COREGA:
478 padapter->eeprompriv.CustomerID =
479 RT_CID_819x_WNC_COREGA;
480 break;
481 case EEPROM_CID_WHQL:
482 break;
483 case EEPROM_CID_NetCore:
484 padapter->eeprompriv.CustomerID =
485 RT_CID_819x_Netcore;
486 break;
487 case EEPROM_CID_CAMEO1:
488 padapter->eeprompriv.CustomerID =
489 RT_CID_819x_CAMEO1;
490 break;
491 case EEPROM_CID_CLEVO:
492 padapter->eeprompriv.CustomerID =
493 RT_CID_819x_CLEVO;
494 break;
495 default:
496 padapter->eeprompriv.CustomerID =
497 RT_CID_DEFAULT;
498 break;
499 }
500 dev_info(&udev->dev, "r8712u: CustomerID = 0x%.4x\n",
501 padapter->eeprompriv.CustomerID);
502 /* Led mode */
503 switch (padapter->eeprompriv.CustomerID) {
504 case RT_CID_DEFAULT:
505 case RT_CID_819x_ALPHA:
506 case RT_CID_819x_CAMEO:
507 padapter->ledpriv.LedStrategy = SW_LED_MODE1;
508 padapter->ledpriv.bRegUseLed = true;
509 break;
510 case RT_CID_819x_Sitecom:
511 padapter->ledpriv.LedStrategy = SW_LED_MODE2;
512 padapter->ledpriv.bRegUseLed = true;
513 break;
514 case RT_CID_COREGA:
515 case RT_CID_819x_Senao:
516 padapter->ledpriv.LedStrategy = SW_LED_MODE3;
517 padapter->ledpriv.bRegUseLed = true;
518 break;
519 case RT_CID_819x_Edimax_Belkin:
520 padapter->ledpriv.LedStrategy = SW_LED_MODE4;
521 padapter->ledpriv.bRegUseLed = true;
522 break;
523 case RT_CID_819x_Sercomm_Belkin:
524 padapter->ledpriv.LedStrategy = SW_LED_MODE5;
525 padapter->ledpriv.bRegUseLed = true;
526 break;
527 case RT_CID_819x_WNC_COREGA:
528 padapter->ledpriv.LedStrategy = SW_LED_MODE6;
529 padapter->ledpriv.bRegUseLed = true;
530 break;
531 default:
532 padapter->ledpriv.LedStrategy = SW_LED_MODE0;
533 padapter->ledpriv.bRegUseLed = false;
534 break;
535 }
536 } else {
537 AutoloadFail = false;
538 }
539 if ((!AutoloadFail) ||
540 ((mac[0] == 0xff) && (mac[1] == 0xff) &&
541 (mac[2] == 0xff) && (mac[3] == 0xff) &&
542 (mac[4] == 0xff) && (mac[5] == 0xff)) ||
543 ((mac[0] == 0x00) && (mac[1] == 0x00) &&
544 (mac[2] == 0x00) && (mac[3] == 0x00) &&
545 (mac[4] == 0x00) && (mac[5] == 0x00))) {
546 mac[0] = 0x00;
547 mac[1] = 0xe0;
548 mac[2] = 0x4c;
549 mac[3] = 0x87;
550 mac[4] = 0x00;
551 mac[5] = 0x00;
552 }
553 if (r8712_initmac) {
554 /* Make sure the user did not select a multicast
555 * address by setting bit 1 of first octet.
556 */
557 mac[0] &= 0xFE;
558 dev_info(&udev->dev,
559 "r8712u: MAC Address from user = %pM\n", mac);
560 } else {
561 dev_info(&udev->dev,
562 "r8712u: MAC Address from efuse = %pM\n", mac);
563 }
564 eth_hw_addr_set(pnetdev, mac);
565 }
566 /* step 6. Load the firmware asynchronously */
567 if (rtl871x_load_fw(padapter))
568 goto deinit_drv_sw;
569 init_completion(&padapter->rx_filter_ready);
570 mutex_init(&padapter->mutex_start);
571 return 0;
572
573 deinit_drv_sw:
574 r8712_free_drv_sw(padapter);
575 dvobj_deinit:
576 padapter->dvobj_deinit(padapter);
577 free_netdev:
578 free_netdev(pnetdev);
579 put_dev:
580 usb_put_dev(udev);
581 usb_set_intfdata(pusb_intf, NULL);
582 return -ENODEV;
583 }
584
585 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove()
586 * => how to recognize both
587 */
r871xu_dev_remove(struct usb_interface * pusb_intf)588 static void r871xu_dev_remove(struct usb_interface *pusb_intf)
589 {
590 struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
591 struct usb_device *udev = interface_to_usbdev(pusb_intf);
592 struct _adapter *padapter = netdev_priv(pnetdev);
593
594 /* never exit with a firmware callback pending */
595 wait_for_completion(&padapter->rtl8712_fw_ready);
596 if (pnetdev->reg_state != NETREG_UNINITIALIZED)
597 unregister_netdev(pnetdev); /* will call netdev_close() */
598 usb_set_intfdata(pusb_intf, NULL);
599 release_firmware(padapter->fw);
600 if (drvpriv.drv_registered)
601 padapter->surprise_removed = true;
602 r8712_flush_rwctrl_works(padapter);
603 r8712_flush_led_works(padapter);
604 udelay(1);
605 /* Stop driver mlme relation timer */
606 r8712_stop_drv_timers(padapter);
607 r871x_dev_unload(padapter);
608 if (padapter->dvobj_deinit)
609 padapter->dvobj_deinit(padapter);
610 r8712_free_drv_sw(padapter);
611 free_netdev(pnetdev);
612
613 /* decrease the reference count of the usb device structure
614 * when disconnect
615 */
616 usb_put_dev(udev);
617
618 /* If we didn't unplug usb dongle and remove/insert module, driver
619 * fails on sitesurvey for the first time when device is up.
620 * Reset usb port for sitesurvey fail issue.
621 */
622 if (udev->state != USB_STATE_NOTATTACHED)
623 usb_reset_device(udev);
624 }
625
r8712u_drv_entry(void)626 static int __init r8712u_drv_entry(void)
627 {
628 drvpriv.drv_registered = true;
629 return usb_register(&drvpriv.r871xu_drv);
630 }
631
r8712u_drv_halt(void)632 static void __exit r8712u_drv_halt(void)
633 {
634 drvpriv.drv_registered = false;
635 usb_deregister(&drvpriv.r871xu_drv);
636 }
637
638 module_init(r8712u_drv_entry);
639 module_exit(r8712u_drv_halt);
640