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 }
269
rtl871x_intf_stop(struct _adapter * padapter)270 void rtl871x_intf_stop(struct _adapter *padapter)
271 {
272 /*disable_hw_interrupt*/
273 if (!padapter->surprise_removed) {
274 /*device still exists, so driver can do i/o operation
275 * TODO:
276 */
277 }
278
279 /* cancel in irp */
280 if (padapter->dvobjpriv.inirp_deinit)
281 padapter->dvobjpriv.inirp_deinit(padapter);
282 /* cancel out irp */
283 r8712_usb_write_port_cancel(padapter);
284 /* TODO:cancel other irps */
285 }
286
r871x_dev_unload(struct _adapter * padapter)287 void r871x_dev_unload(struct _adapter *padapter)
288 {
289 if (padapter->bup) {
290 /*s1.*/
291 padapter->driver_stopped = true;
292
293 /*s3.*/
294 rtl871x_intf_stop(padapter);
295
296 /*s4.*/
297 r8712_stop_drv_threads(padapter);
298
299 /*s5.*/
300 if (!padapter->surprise_removed) {
301 padapter->hw_init_completed = false;
302 rtl8712_hal_deinit(padapter);
303 }
304
305 /*s6.*/
306 if (padapter->dvobj_deinit)
307 padapter->dvobj_deinit(padapter);
308 padapter->bup = false;
309 }
310 }
311
disable_ht_for_spec_devid(const struct usb_device_id * pdid,struct _adapter * padapter)312 static void disable_ht_for_spec_devid(const struct usb_device_id *pdid,
313 struct _adapter *padapter)
314 {
315 u16 vid, pid;
316 u32 flags;
317 int i;
318 int num = ARRAY_SIZE(specific_device_id_tbl);
319
320 for (i = 0; i < num; i++) {
321 vid = specific_device_id_tbl[i].idVendor;
322 pid = specific_device_id_tbl[i].idProduct;
323 flags = specific_device_id_tbl[i].flags;
324
325 if ((pdid->idVendor == vid) && (pdid->idProduct == pid) &&
326 (flags & SPEC_DEV_ID_DISABLE_HT)) {
327 padapter->registrypriv.ht_enable = 0;
328 padapter->registrypriv.cbw40_enable = 0;
329 padapter->registrypriv.ampdu_enable = 0;
330 }
331 }
332 }
333
334 static const struct device_type wlan_type = {
335 .name = "wlan",
336 };
337
338 /*
339 * drv_init() - a device potentially for us
340 *
341 * notes: drv_init() is called when the bus driver has located a card for us
342 * to support. We accept the new device by returning 0.
343 */
r871xu_drv_init(struct usb_interface * pusb_intf,const struct usb_device_id * pdid)344 static int r871xu_drv_init(struct usb_interface *pusb_intf,
345 const struct usb_device_id *pdid)
346 {
347 uint status;
348 struct _adapter *padapter = NULL;
349 struct dvobj_priv *pdvobjpriv;
350 struct net_device *pnetdev;
351 struct usb_device *udev;
352
353 /* In this probe function, O.S. will provide the usb interface pointer
354 * to driver. We have to increase the reference count of the usb device
355 * structure by using the usb_get_dev function.
356 */
357 udev = interface_to_usbdev(pusb_intf);
358 usb_get_dev(udev);
359 pintf = pusb_intf;
360 /* step 1. */
361 pnetdev = r8712_init_netdev();
362 if (!pnetdev)
363 goto put_dev;
364 padapter = netdev_priv(pnetdev);
365 disable_ht_for_spec_devid(pdid, padapter);
366 pdvobjpriv = &padapter->dvobjpriv;
367 pdvobjpriv->padapter = padapter;
368 padapter->dvobjpriv.pusbdev = udev;
369 padapter->pusb_intf = pusb_intf;
370 usb_set_intfdata(pusb_intf, pnetdev);
371 SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
372 pnetdev->dev.type = &wlan_type;
373 /* step 2. */
374 padapter->dvobj_init = r8712_usb_dvobj_init;
375 padapter->dvobj_deinit = r8712_usb_dvobj_deinit;
376 padapter->halpriv.hal_bus_init = r8712_usb_hal_bus_init;
377 padapter->dvobjpriv.inirp_init = r8712_usb_inirp_init;
378 padapter->dvobjpriv.inirp_deinit = r8712_usb_inirp_deinit;
379 /* step 3.
380 * initialize the dvobj_priv
381 */
382
383 status = padapter->dvobj_init(padapter);
384 if (status != _SUCCESS)
385 goto free_netdev;
386
387 /* step 4. */
388 status = r8712_init_drv_sw(padapter);
389 if (status)
390 goto dvobj_deinit;
391 /* step 5. read efuse/eeprom data and get mac_addr */
392 {
393 int i, offset;
394 u8 mac[6];
395 u8 tmpU1b, AutoloadFail, eeprom_CustomerID;
396 u8 *pdata = padapter->eeprompriv.efuse_eeprom_data;
397
398 tmpU1b = r8712_read8(padapter, EE_9346CR);/*CR9346*/
399
400 /* To check system boot selection.*/
401 dev_info(&udev->dev, "r8712u: Boot from %s: Autoload %s\n",
402 (tmpU1b & _9356SEL) ? "EEPROM" : "EFUSE",
403 (tmpU1b & _EEPROM_EN) ? "OK" : "Failed");
404
405 /* To check autoload success or not.*/
406 if (tmpU1b & _EEPROM_EN) {
407 AutoloadFail = true;
408 /* The following operations prevent Efuse leakage by
409 * turning on 2.5V.
410 */
411 tmpU1b = r8712_read8(padapter, EFUSE_TEST + 3);
412 r8712_write8(padapter, EFUSE_TEST + 3, tmpU1b | 0x80);
413 msleep(20);
414 r8712_write8(padapter, EFUSE_TEST + 3,
415 (tmpU1b & (~BIT(7))));
416
417 /* Retrieve Chip version.
418 * Recognize IC version by Reg0x4 BIT15.
419 */
420 tmpU1b = (u8)((r8712_read32(padapter, PMC_FSM) >> 15) &
421 0x1F);
422 if (tmpU1b == 0x3)
423 padapter->registrypriv.chip_version =
424 RTL8712_3rdCUT;
425 else
426 padapter->registrypriv.chip_version =
427 (tmpU1b >> 1) + 1;
428 switch (padapter->registrypriv.chip_version) {
429 case RTL8712_1stCUT:
430 case RTL8712_2ndCUT:
431 case RTL8712_3rdCUT:
432 break;
433 default:
434 padapter->registrypriv.chip_version =
435 RTL8712_2ndCUT;
436 break;
437 }
438
439 for (i = 0, offset = 0; i < 128; i += 8, offset++)
440 r8712_efuse_pg_packet_read(padapter, offset,
441 &pdata[i]);
442
443 if (!r8712_initmac || !mac_pton(r8712_initmac, mac)) {
444 /* Use the mac address stored in the Efuse
445 * offset = 0x12 for usb in efuse
446 */
447 ether_addr_copy(mac, &pdata[0x12]);
448 }
449 eeprom_CustomerID = pdata[0x52];
450 switch (eeprom_CustomerID) {
451 case EEPROM_CID_ALPHA:
452 padapter->eeprompriv.CustomerID =
453 RT_CID_819x_ALPHA;
454 break;
455 case EEPROM_CID_CAMEO:
456 padapter->eeprompriv.CustomerID =
457 RT_CID_819x_CAMEO;
458 break;
459 case EEPROM_CID_SITECOM:
460 padapter->eeprompriv.CustomerID =
461 RT_CID_819x_Sitecom;
462 break;
463 case EEPROM_CID_COREGA:
464 padapter->eeprompriv.CustomerID =
465 RT_CID_COREGA;
466 break;
467 case EEPROM_CID_Senao:
468 padapter->eeprompriv.CustomerID =
469 RT_CID_819x_Senao;
470 break;
471 case EEPROM_CID_EDIMAX_BELKIN:
472 padapter->eeprompriv.CustomerID =
473 RT_CID_819x_Edimax_Belkin;
474 break;
475 case EEPROM_CID_SERCOMM_BELKIN:
476 padapter->eeprompriv.CustomerID =
477 RT_CID_819x_Sercomm_Belkin;
478 break;
479 case EEPROM_CID_WNC_COREGA:
480 padapter->eeprompriv.CustomerID =
481 RT_CID_819x_WNC_COREGA;
482 break;
483 case EEPROM_CID_WHQL:
484 break;
485 case EEPROM_CID_NetCore:
486 padapter->eeprompriv.CustomerID =
487 RT_CID_819x_Netcore;
488 break;
489 case EEPROM_CID_CAMEO1:
490 padapter->eeprompriv.CustomerID =
491 RT_CID_819x_CAMEO1;
492 break;
493 case EEPROM_CID_CLEVO:
494 padapter->eeprompriv.CustomerID =
495 RT_CID_819x_CLEVO;
496 break;
497 default:
498 padapter->eeprompriv.CustomerID =
499 RT_CID_DEFAULT;
500 break;
501 }
502 dev_info(&udev->dev, "r8712u: CustomerID = 0x%.4x\n",
503 padapter->eeprompriv.CustomerID);
504 /* Led mode */
505 switch (padapter->eeprompriv.CustomerID) {
506 case RT_CID_DEFAULT:
507 case RT_CID_819x_ALPHA:
508 case RT_CID_819x_CAMEO:
509 padapter->ledpriv.LedStrategy = SW_LED_MODE1;
510 padapter->ledpriv.bRegUseLed = true;
511 break;
512 case RT_CID_819x_Sitecom:
513 padapter->ledpriv.LedStrategy = SW_LED_MODE2;
514 padapter->ledpriv.bRegUseLed = true;
515 break;
516 case RT_CID_COREGA:
517 case RT_CID_819x_Senao:
518 padapter->ledpriv.LedStrategy = SW_LED_MODE3;
519 padapter->ledpriv.bRegUseLed = true;
520 break;
521 case RT_CID_819x_Edimax_Belkin:
522 padapter->ledpriv.LedStrategy = SW_LED_MODE4;
523 padapter->ledpriv.bRegUseLed = true;
524 break;
525 case RT_CID_819x_Sercomm_Belkin:
526 padapter->ledpriv.LedStrategy = SW_LED_MODE5;
527 padapter->ledpriv.bRegUseLed = true;
528 break;
529 case RT_CID_819x_WNC_COREGA:
530 padapter->ledpriv.LedStrategy = SW_LED_MODE6;
531 padapter->ledpriv.bRegUseLed = true;
532 break;
533 default:
534 padapter->ledpriv.LedStrategy = SW_LED_MODE0;
535 padapter->ledpriv.bRegUseLed = false;
536 break;
537 }
538 } else {
539 AutoloadFail = false;
540 }
541 if (((mac[0] == 0xff) && (mac[1] == 0xff) &&
542 (mac[2] == 0xff) && (mac[3] == 0xff) &&
543 (mac[4] == 0xff) && (mac[5] == 0xff)) ||
544 ((mac[0] == 0x00) && (mac[1] == 0x00) &&
545 (mac[2] == 0x00) && (mac[3] == 0x00) &&
546 (mac[4] == 0x00) && (mac[5] == 0x00)) ||
547 (!AutoloadFail)) {
548 mac[0] = 0x00;
549 mac[1] = 0xe0;
550 mac[2] = 0x4c;
551 mac[3] = 0x87;
552 mac[4] = 0x00;
553 mac[5] = 0x00;
554 }
555 if (r8712_initmac) {
556 /* Make sure the user did not select a multicast
557 * address by setting bit 1 of first octet.
558 */
559 mac[0] &= 0xFE;
560 dev_info(&udev->dev,
561 "r8712u: MAC Address from user = %pM\n", mac);
562 } else {
563 dev_info(&udev->dev,
564 "r8712u: MAC Address from efuse = %pM\n", mac);
565 }
566 eth_hw_addr_set(pnetdev, mac);
567 }
568 /* step 6. Load the firmware asynchronously */
569 if (rtl871x_load_fw(padapter))
570 goto deinit_drv_sw;
571 spin_lock_init(&padapter->lock_rx_ff0_filter);
572 mutex_init(&padapter->mutex_start);
573 return 0;
574
575 deinit_drv_sw:
576 r8712_free_drv_sw(padapter);
577 dvobj_deinit:
578 padapter->dvobj_deinit(padapter);
579 free_netdev:
580 free_netdev(pnetdev);
581 put_dev:
582 usb_put_dev(udev);
583 usb_set_intfdata(pusb_intf, NULL);
584 return -ENODEV;
585 }
586
587 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove()
588 * => how to recognize both
589 */
r871xu_dev_remove(struct usb_interface * pusb_intf)590 static void r871xu_dev_remove(struct usb_interface *pusb_intf)
591 {
592 struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
593 struct usb_device *udev = interface_to_usbdev(pusb_intf);
594 struct _adapter *padapter = netdev_priv(pnetdev);
595
596 /* never exit with a firmware callback pending */
597 wait_for_completion(&padapter->rtl8712_fw_ready);
598 if (pnetdev->reg_state != NETREG_UNINITIALIZED)
599 unregister_netdev(pnetdev); /* will call netdev_close() */
600 usb_set_intfdata(pusb_intf, NULL);
601 release_firmware(padapter->fw);
602 if (drvpriv.drv_registered)
603 padapter->surprise_removed = true;
604 r8712_flush_rwctrl_works(padapter);
605 r8712_flush_led_works(padapter);
606 udelay(1);
607 /* Stop driver mlme relation timer */
608 r8712_stop_drv_timers(padapter);
609 r871x_dev_unload(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