Version:  2.0.40 2.2.26 2.4.37 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1

Linux/drivers/staging/rtl8712/usb_intf.c

  1 /******************************************************************************
  2  * usb_intf.c
  3  *
  4  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
  5  * Linux device driver for RTL8192SU
  6  *
  7  * This program is free software; you can redistribute it and/or modify it
  8  * under the terms of version 2 of the GNU General Public License as
  9  * published by the Free Software Foundation.
 10  *
 11  * This program is distributed in the hope that it will be useful, but WITHOUT
 12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 14  * more details.
 15  *
 16  * You should have received a copy of the GNU General Public License along with
 17  * this program; if not, write to the Free Software Foundation, Inc.,
 18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 19  *
 20  * Modifications for inclusion into the Linux staging tree are
 21  * Copyright(c) 2010 Larry Finger. All rights reserved.
 22  *
 23  * Contact information:
 24  * WLAN FAE <wlanfae@realtek.com>
 25  * Larry Finger <Larry.Finger@lwfinger.net>
 26  *
 27  ******************************************************************************/
 28 
 29 #define _HCI_INTF_C_
 30 
 31 #include <linux/usb.h>
 32 #include <linux/module.h>
 33 #include <linux/firmware.h>
 34 
 35 #include "osdep_service.h"
 36 #include "drv_types.h"
 37 #include "recv_osdep.h"
 38 #include "xmit_osdep.h"
 39 #include "rtl8712_efuse.h"
 40 #include "usb_ops.h"
 41 #include "usb_osintf.h"
 42 
 43 static struct usb_interface *pintf;
 44 
 45 static int r871xu_drv_init(struct usb_interface *pusb_intf,
 46                            const struct usb_device_id *pdid);
 47 
 48 static void r871xu_dev_remove(struct usb_interface *pusb_intf);
 49 
 50 static struct usb_device_id rtl871x_usb_id_tbl[] = {
 51 
 52 /* RTL8188SU */
 53         /* Realtek */
 54         {USB_DEVICE(0x0BDA, 0x8171)},
 55         {USB_DEVICE(0x0bda, 0x8173)},
 56         {USB_DEVICE(0x0bda, 0x8712)},
 57         {USB_DEVICE(0x0bda, 0x8713)},
 58         {USB_DEVICE(0x0bda, 0xC512)},
 59         /* Abocom */
 60         {USB_DEVICE(0x07B8, 0x8188)},
 61         /* ASUS */
 62         {USB_DEVICE(0x0B05, 0x1786)},
 63         {USB_DEVICE(0x0B05, 0x1791)}, /* 11n mode disable */
 64         /* Belkin */
 65         {USB_DEVICE(0x050D, 0x945A)},
 66         /* ISY IWL - Belkin clone */
 67         {USB_DEVICE(0x050D, 0x11F1)},
 68         /* Corega */
 69         {USB_DEVICE(0x07AA, 0x0047)},
 70         /* D-Link */
 71         {USB_DEVICE(0x2001, 0x3306)},
 72         {USB_DEVICE(0x07D1, 0x3306)}, /* 11n mode disable */
 73         /* Edimax */
 74         {USB_DEVICE(0x7392, 0x7611)},
 75         /* EnGenius */
 76         {USB_DEVICE(0x1740, 0x9603)},
 77         /* Hawking */
 78         {USB_DEVICE(0x0E66, 0x0016)},
 79         /* Hercules */
 80         {USB_DEVICE(0x06F8, 0xE034)},
 81         {USB_DEVICE(0x06F8, 0xE032)},
 82         /* Logitec */
 83         {USB_DEVICE(0x0789, 0x0167)},
 84         /* PCI */
 85         {USB_DEVICE(0x2019, 0xAB28)},
 86         {USB_DEVICE(0x2019, 0xED16)},
 87         /* Sitecom */
 88         {USB_DEVICE(0x0DF6, 0x0057)},
 89         {USB_DEVICE(0x0DF6, 0x0045)},
 90         {USB_DEVICE(0x0DF6, 0x0059)}, /* 11n mode disable */
 91         {USB_DEVICE(0x0DF6, 0x004B)},
 92         {USB_DEVICE(0x0DF6, 0x005B)},
 93         {USB_DEVICE(0x0DF6, 0x005D)},
 94         {USB_DEVICE(0x0DF6, 0x0063)},
 95         /* Sweex */
 96         {USB_DEVICE(0x177F, 0x0154)},
 97         /* Thinkware */
 98         {USB_DEVICE(0x0BDA, 0x5077)},
 99         /* Toshiba */
100         {USB_DEVICE(0x1690, 0x0752)},
101         /* - */
102         {USB_DEVICE(0x20F4, 0x646B)},
103         {USB_DEVICE(0x083A, 0xC512)},
104         {USB_DEVICE(0x25D4, 0x4CA1)},
105         {USB_DEVICE(0x25D4, 0x4CAB)},
106 
107 /* RTL8191SU */
108         /* Realtek */
109         {USB_DEVICE(0x0BDA, 0x8172)},
110         {USB_DEVICE(0x0BDA, 0x8192)},
111         /* Amigo */
112         {USB_DEVICE(0x0EB0, 0x9061)},
113         /* ASUS/EKB */
114         {USB_DEVICE(0x13D3, 0x3323)},
115         {USB_DEVICE(0x13D3, 0x3311)}, /* 11n mode disable */
116         {USB_DEVICE(0x13D3, 0x3342)},
117         /* ASUS/EKBLenovo */
118         {USB_DEVICE(0x13D3, 0x3333)},
119         {USB_DEVICE(0x13D3, 0x3334)},
120         {USB_DEVICE(0x13D3, 0x3335)}, /* 11n mode disable */
121         {USB_DEVICE(0x13D3, 0x3336)}, /* 11n mode disable */
122         /* ASUS/Media BOX */
123         {USB_DEVICE(0x13D3, 0x3309)},
124         /* Belkin */
125         {USB_DEVICE(0x050D, 0x815F)},
126         /* D-Link */
127         {USB_DEVICE(0x07D1, 0x3302)},
128         {USB_DEVICE(0x07D1, 0x3300)},
129         {USB_DEVICE(0x07D1, 0x3303)},
130         /* Edimax */
131         {USB_DEVICE(0x7392, 0x7612)},
132         /* EnGenius */
133         {USB_DEVICE(0x1740, 0x9605)},
134         /* Guillemot */
135         {USB_DEVICE(0x06F8, 0xE031)},
136         /* Hawking */
137         {USB_DEVICE(0x0E66, 0x0015)},
138         /* Mediao */
139         {USB_DEVICE(0x13D3, 0x3306)},
140         /* PCI */
141         {USB_DEVICE(0x2019, 0xED18)},
142         {USB_DEVICE(0x2019, 0x4901)},
143         /* Sitecom */
144         {USB_DEVICE(0x0DF6, 0x0058)},
145         {USB_DEVICE(0x0DF6, 0x0049)},
146         {USB_DEVICE(0x0DF6, 0x004C)},
147         {USB_DEVICE(0x0DF6, 0x0064)},
148         /* Skyworth */
149         {USB_DEVICE(0x14b2, 0x3300)},
150         {USB_DEVICE(0x14b2, 0x3301)},
151         {USB_DEVICE(0x14B2, 0x3302)},
152         /* - */
153         {USB_DEVICE(0x04F2, 0xAFF2)},
154         {USB_DEVICE(0x04F2, 0xAFF5)},
155         {USB_DEVICE(0x04F2, 0xAFF6)},
156         {USB_DEVICE(0x13D3, 0x3339)},
157         {USB_DEVICE(0x13D3, 0x3340)}, /* 11n mode disable */
158         {USB_DEVICE(0x13D3, 0x3341)}, /* 11n mode disable */
159         {USB_DEVICE(0x13D3, 0x3310)},
160         {USB_DEVICE(0x13D3, 0x3325)},
161 
162 /* RTL8192SU */
163         /* Realtek */
164         {USB_DEVICE(0x0BDA, 0x8174)},
165         /* Belkin */
166         {USB_DEVICE(0x050D, 0x845A)},
167         /* Corega */
168         {USB_DEVICE(0x07AA, 0x0051)},
169         /* Edimax */
170         {USB_DEVICE(0x7392, 0x7622)},
171         /* NEC */
172         {USB_DEVICE(0x0409, 0x02B6)},
173         {}
174 };
175 
176 MODULE_DEVICE_TABLE(usb, rtl871x_usb_id_tbl);
177 
178 static struct specific_device_id specific_device_id_tbl[] = {
179         {.idVendor = 0x0b05, .idProduct = 0x1791,
180                  .flags = SPEC_DEV_ID_DISABLE_HT},
181         {.idVendor = 0x0df6, .idProduct = 0x0059,
182                  .flags = SPEC_DEV_ID_DISABLE_HT},
183         {.idVendor = 0x13d3, .idProduct = 0x3306,
184                  .flags = SPEC_DEV_ID_DISABLE_HT},
185         {.idVendor = 0x13D3, .idProduct = 0x3311,
186                  .flags = SPEC_DEV_ID_DISABLE_HT},
187         {.idVendor = 0x13d3, .idProduct = 0x3335,
188                  .flags = SPEC_DEV_ID_DISABLE_HT},
189         {.idVendor = 0x13d3, .idProduct = 0x3336,
190                  .flags = SPEC_DEV_ID_DISABLE_HT},
191         {.idVendor = 0x13d3, .idProduct = 0x3340,
192                  .flags = SPEC_DEV_ID_DISABLE_HT},
193         {.idVendor = 0x13d3, .idProduct = 0x3341,
194                  .flags = SPEC_DEV_ID_DISABLE_HT},
195         {}
196 };
197 
198 struct drv_priv {
199         struct usb_driver r871xu_drv;
200         int drv_registered;
201 };
202 
203 #ifdef CONFIG_PM
204 static int r871x_suspend(struct usb_interface *pusb_intf, pm_message_t state)
205 {
206         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
207 
208         netdev_info(pnetdev, "Suspending...\n");
209         if (!pnetdev || !netif_running(pnetdev)) {
210                 netdev_info(pnetdev, "Unable to suspend\n");
211                 return 0;
212         }
213         if (pnetdev->netdev_ops->ndo_stop)
214                 pnetdev->netdev_ops->ndo_stop(pnetdev);
215         mdelay(10);
216         netif_device_detach(pnetdev);
217         return 0;
218 }
219 
220 static int r871x_resume(struct usb_interface *pusb_intf)
221 {
222         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
223 
224         netdev_info(pnetdev,  "Resuming...\n");
225         if (!pnetdev || !netif_running(pnetdev)) {
226                 netdev_info(pnetdev, "Unable to resume\n");
227                 return 0;
228         }
229         netif_device_attach(pnetdev);
230         if (pnetdev->netdev_ops->ndo_open)
231                 pnetdev->netdev_ops->ndo_open(pnetdev);
232         return 0;
233 }
234 
235 static int r871x_reset_resume(struct usb_interface *pusb_intf)
236 {
237         /* dummy routine */
238         return 0;
239 }
240 
241 #endif
242 
243 static struct drv_priv drvpriv = {
244         .r871xu_drv.name = "r8712u",
245         .r871xu_drv.id_table = rtl871x_usb_id_tbl,
246         .r871xu_drv.probe = r871xu_drv_init,
247         .r871xu_drv.disconnect = r871xu_dev_remove,
248 #ifdef CONFIG_PM
249         .r871xu_drv.suspend = r871x_suspend,
250         .r871xu_drv.resume = r871x_resume,
251         .r871xu_drv.reset_resume = r871x_reset_resume,
252 #endif
253 };
254 
255 static uint r8712_usb_dvobj_init(struct _adapter *padapter)
256 {
257         uint    status = _SUCCESS;
258         struct  usb_host_interface              *phost_iface;
259         struct  usb_interface_descriptor        *piface_desc;
260         struct dvobj_priv *pdvobjpriv = &padapter->dvobjpriv;
261         struct usb_device *pusbd = pdvobjpriv->pusbdev;
262 
263         pdvobjpriv->padapter = padapter;
264         padapter->EepromAddressSize = 6;
265         phost_iface = &pintf->altsetting[0];
266         piface_desc = &phost_iface->desc;
267         pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;
268         if (pusbd->speed == USB_SPEED_HIGH) {
269                 pdvobjpriv->ishighspeed = true;
270                 dev_info(&pusbd->dev, "r8712u: USB_SPEED_HIGH with %d endpoints\n",
271                          pdvobjpriv->nr_endpoint);
272         } else {
273                 pdvobjpriv->ishighspeed = false;
274                 dev_info(&pusbd->dev, "r8712u: USB_SPEED_LOW with %d endpoints\n",
275                          pdvobjpriv->nr_endpoint);
276         }
277         if ((r8712_alloc_io_queue(padapter)) == _FAIL)
278                 status = _FAIL;
279         return status;
280 }
281 
282 static void r8712_usb_dvobj_deinit(struct _adapter *padapter)
283 {
284 }
285 
286 void rtl871x_intf_stop(struct _adapter *padapter)
287 {
288         /*disable_hw_interrupt*/
289         if (!padapter->bSurpriseRemoved) {
290                 /*device still exists, so driver can do i/o operation
291                  * TODO: */
292         }
293 
294         /* cancel in irp */
295         if (padapter->dvobjpriv.inirp_deinit)
296                 padapter->dvobjpriv.inirp_deinit(padapter);
297         /* cancel out irp */
298         r8712_usb_write_port_cancel(padapter);
299         /* TODO:cancel other irps */
300 }
301 
302 void r871x_dev_unload(struct _adapter *padapter)
303 {
304         if (padapter->bup == true) {
305                 /*s1.*/
306                 padapter->bDriverStopped = true;
307 
308                 /*s3.*/
309                 rtl871x_intf_stop(padapter);
310 
311                 /*s4.*/
312                 r8712_stop_drv_threads(padapter);
313 
314                 /*s5.*/
315                 if (!padapter->bSurpriseRemoved) {
316                         padapter->hw_init_completed = false;
317                         rtl8712_hal_deinit(padapter);
318                 }
319 
320                 /*s6.*/
321                 if (padapter->dvobj_deinit)
322                         padapter->dvobj_deinit(padapter);
323                 padapter->bup = false;
324         }
325 }
326 
327 static void disable_ht_for_spec_devid(const struct usb_device_id *pdid,
328                                       struct _adapter *padapter)
329 {
330         u16 vid, pid;
331         u32 flags;
332         int i;
333         int num = sizeof(specific_device_id_tbl) /
334                   sizeof(struct specific_device_id);
335 
336         for (i = 0; i < num; i++) {
337                 vid = specific_device_id_tbl[i].idVendor;
338                 pid = specific_device_id_tbl[i].idProduct;
339                 flags = specific_device_id_tbl[i].flags;
340 
341                 if ((pdid->idVendor == vid) && (pdid->idProduct == pid) &&
342                     (flags&SPEC_DEV_ID_DISABLE_HT)) {
343                         padapter->registrypriv.ht_enable = 0;
344                         padapter->registrypriv.cbw40_enable = 0;
345                         padapter->registrypriv.ampdu_enable = 0;
346                 }
347         }
348 }
349 
350 static const struct device_type wlan_type = {
351         .name = "wlan",
352 };
353 
354 /*
355  * drv_init() - a device potentially for us
356  *
357  * notes: drv_init() is called when the bus driver has located a card for us
358  * to support. We accept the new device by returning 0.
359 */
360 static int r871xu_drv_init(struct usb_interface *pusb_intf,
361                            const struct usb_device_id *pdid)
362 {
363         uint status;
364         struct _adapter *padapter = NULL;
365         struct dvobj_priv *pdvobjpriv;
366         struct net_device *pnetdev;
367         struct usb_device *udev;
368 
369         /* In this probe function, O.S. will provide the usb interface pointer
370          * to driver. We have to increase the reference count of the usb device
371          * structure by using the usb_get_dev function.
372          */
373         udev = interface_to_usbdev(pusb_intf);
374         usb_get_dev(udev);
375         pintf = pusb_intf;
376         /* step 1. */
377         pnetdev = r8712_init_netdev();
378         if (!pnetdev)
379                 goto error;
380         padapter = netdev_priv(pnetdev);
381         disable_ht_for_spec_devid(pdid, padapter);
382         pdvobjpriv = &padapter->dvobjpriv;
383         pdvobjpriv->padapter = padapter;
384         padapter->dvobjpriv.pusbdev = udev;
385         padapter->pusb_intf = pusb_intf;
386         usb_set_intfdata(pusb_intf, pnetdev);
387         SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
388         pnetdev->dev.type = &wlan_type;
389         /* step 2. */
390         padapter->dvobj_init = &r8712_usb_dvobj_init;
391         padapter->dvobj_deinit = &r8712_usb_dvobj_deinit;
392         padapter->halpriv.hal_bus_init = &r8712_usb_hal_bus_init;
393         padapter->dvobjpriv.inirp_init = &r8712_usb_inirp_init;
394         padapter->dvobjpriv.inirp_deinit = &r8712_usb_inirp_deinit;
395         /* step 3.
396          * initialize the dvobj_priv
397          */
398         if (!padapter->dvobj_init)
399                         goto error;
400         else {
401                 status = padapter->dvobj_init(padapter);
402                 if (status != _SUCCESS)
403                         goto error;
404         }
405         /* step 4. */
406         status = r8712_init_drv_sw(padapter);
407         if (status == _FAIL)
408                 goto error;
409         /* step 5. read efuse/eeprom data and get mac_addr */
410         {
411                 int i, offset;
412                 u8 mac[6];
413                 u8 tmpU1b, AutoloadFail, eeprom_CustomerID;
414                 u8 *pdata = padapter->eeprompriv.efuse_eeprom_data;
415 
416                 tmpU1b = r8712_read8(padapter, EE_9346CR);/*CR9346*/
417 
418                 /* To check system boot selection.*/
419                 dev_info(&udev->dev, "r8712u: Boot from %s: Autoload %s\n",
420                          (tmpU1b & _9356SEL) ? "EEPROM" : "EFUSE",
421                          (tmpU1b & _EEPROM_EN) ? "OK" : "Failed");
422 
423                 /* To check autoload success or not.*/
424                 if (tmpU1b & _EEPROM_EN) {
425                         AutoloadFail = true;
426                         /* The following operations prevent Efuse leakage by
427                          * turning on 2.5V.
428                          */
429                         tmpU1b = r8712_read8(padapter, EFUSE_TEST+3);
430                         r8712_write8(padapter, EFUSE_TEST + 3, tmpU1b | 0x80);
431                         msleep(20);
432                         r8712_write8(padapter, EFUSE_TEST + 3,
433                                      (tmpU1b & (~BIT(7))));
434 
435                         /* Retrieve Chip version.
436                          * Recognize IC version by Reg0x4 BIT15.
437                          */
438                         tmpU1b = (u8)((r8712_read32(padapter, PMC_FSM) >> 15) &
439                                                     0x1F);
440                         if (tmpU1b == 0x3)
441                                 padapter->registrypriv.chip_version =
442                                      RTL8712_3rdCUT;
443                         else
444                                 padapter->registrypriv.chip_version =
445                                      (tmpU1b >> 1) + 1;
446                         switch (padapter->registrypriv.chip_version) {
447                         case RTL8712_1stCUT:
448                         case RTL8712_2ndCUT:
449                         case RTL8712_3rdCUT:
450                                 break;
451                         default:
452                                 padapter->registrypriv.chip_version =
453                                      RTL8712_2ndCUT;
454                                 break;
455                         }
456 
457                         for (i = 0, offset = 0; i < 128; i += 8, offset++)
458                                 r8712_efuse_pg_packet_read(padapter, offset,
459                                                      &pdata[i]);
460 
461                         if (!r8712_initmac || !mac_pton(r8712_initmac, mac)) {
462                                 /* Use the mac address stored in the Efuse
463                                  * offset = 0x12 for usb in efuse
464                                  */
465                                 ether_addr_copy(mac, &pdata[0x12]);
466                         }
467                         eeprom_CustomerID = pdata[0x52];
468                         switch (eeprom_CustomerID) {
469                         case EEPROM_CID_ALPHA:
470                                 padapter->eeprompriv.CustomerID =
471                                                  RT_CID_819x_ALPHA;
472                                 break;
473                         case EEPROM_CID_CAMEO:
474                                 padapter->eeprompriv.CustomerID =
475                                                  RT_CID_819x_CAMEO;
476                                 break;
477                         case EEPROM_CID_SITECOM:
478                                 padapter->eeprompriv.CustomerID =
479                                                  RT_CID_819x_Sitecom;
480                                 break;
481                         case EEPROM_CID_COREGA:
482                                 padapter->eeprompriv.CustomerID =
483                                                  RT_CID_COREGA;
484                                 break;
485                         case EEPROM_CID_Senao:
486                                 padapter->eeprompriv.CustomerID =
487                                                  RT_CID_819x_Senao;
488                                 break;
489                         case EEPROM_CID_EDIMAX_BELKIN:
490                                 padapter->eeprompriv.CustomerID =
491                                                  RT_CID_819x_Edimax_Belkin;
492                                 break;
493                         case EEPROM_CID_SERCOMM_BELKIN:
494                                 padapter->eeprompriv.CustomerID =
495                                                  RT_CID_819x_Sercomm_Belkin;
496                                 break;
497                         case EEPROM_CID_WNC_COREGA:
498                                 padapter->eeprompriv.CustomerID =
499                                                  RT_CID_819x_WNC_COREGA;
500                                 break;
501                         case EEPROM_CID_WHQL:
502                                 break;
503                         case EEPROM_CID_NetCore:
504                                 padapter->eeprompriv.CustomerID =
505                                                  RT_CID_819x_Netcore;
506                                 break;
507                         case EEPROM_CID_CAMEO1:
508                                 padapter->eeprompriv.CustomerID =
509                                                  RT_CID_819x_CAMEO1;
510                                 break;
511                         case EEPROM_CID_CLEVO:
512                                 padapter->eeprompriv.CustomerID =
513                                                  RT_CID_819x_CLEVO;
514                                 break;
515                         default:
516                                 padapter->eeprompriv.CustomerID =
517                                                  RT_CID_DEFAULT;
518                                 break;
519                         }
520                         dev_info(&udev->dev, "r8712u: CustomerID = 0x%.4x\n",
521                                  padapter->eeprompriv.CustomerID);
522                         /* Led mode */
523                         switch (padapter->eeprompriv.CustomerID) {
524                         case RT_CID_DEFAULT:
525                         case RT_CID_819x_ALPHA:
526                         case RT_CID_819x_CAMEO:
527                                 padapter->ledpriv.LedStrategy = SW_LED_MODE1;
528                                 padapter->ledpriv.bRegUseLed = true;
529                                 break;
530                         case RT_CID_819x_Sitecom:
531                                 padapter->ledpriv.LedStrategy = SW_LED_MODE2;
532                                 padapter->ledpriv.bRegUseLed = true;
533                                 break;
534                         case RT_CID_COREGA:
535                         case RT_CID_819x_Senao:
536                                 padapter->ledpriv.LedStrategy = SW_LED_MODE3;
537                                 padapter->ledpriv.bRegUseLed = true;
538                                 break;
539                         case RT_CID_819x_Edimax_Belkin:
540                                 padapter->ledpriv.LedStrategy = SW_LED_MODE4;
541                                 padapter->ledpriv.bRegUseLed = true;
542                                 break;
543                         case RT_CID_819x_Sercomm_Belkin:
544                                 padapter->ledpriv.LedStrategy = SW_LED_MODE5;
545                                 padapter->ledpriv.bRegUseLed = true;
546                                 break;
547                         case RT_CID_819x_WNC_COREGA:
548                                 padapter->ledpriv.LedStrategy = SW_LED_MODE6;
549                                 padapter->ledpriv.bRegUseLed = true;
550                                 break;
551                         default:
552                                 padapter->ledpriv.LedStrategy = SW_LED_MODE0;
553                                 padapter->ledpriv.bRegUseLed = false;
554                                 break;
555                         }
556                 } else
557                         AutoloadFail = false;
558                 if (((mac[0] == 0xff) && (mac[1] == 0xff) &&
559                      (mac[2] == 0xff) && (mac[3] == 0xff) &&
560                      (mac[4] == 0xff) && (mac[5] == 0xff)) ||
561                     ((mac[0] == 0x00) && (mac[1] == 0x00) &&
562                      (mac[2] == 0x00) && (mac[3] == 0x00) &&
563                      (mac[4] == 0x00) && (mac[5] == 0x00)) ||
564                      (!AutoloadFail)) {
565                         mac[0] = 0x00;
566                         mac[1] = 0xe0;
567                         mac[2] = 0x4c;
568                         mac[3] = 0x87;
569                         mac[4] = 0x00;
570                         mac[5] = 0x00;
571                 }
572                 if (r8712_initmac) {
573                         /* Make sure the user did not select a multicast
574                          * address by setting bit 1 of first octet.
575                          */
576                         mac[0] &= 0xFE;
577                         dev_info(&udev->dev,
578                                 "r8712u: MAC Address from user = %pM\n", mac);
579                 } else
580                         dev_info(&udev->dev,
581                                 "r8712u: MAC Address from efuse = %pM\n", mac);
582                 ether_addr_copy(pnetdev->dev_addr, mac);
583         }
584         /* step 6. Load the firmware asynchronously */
585         if (rtl871x_load_fw(padapter))
586                 goto error;
587         spin_lock_init(&padapter->lockRxFF0Filter);
588         mutex_init(&padapter->mutex_start);
589         return 0;
590 error:
591         usb_put_dev(udev);
592         usb_set_intfdata(pusb_intf, NULL);
593         if (padapter && padapter->dvobj_deinit != NULL)
594                 padapter->dvobj_deinit(padapter);
595         if (pnetdev)
596                 free_netdev(pnetdev);
597         return -ENODEV;
598 }
599 
600 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove()
601  * => how to recognize both */
602 static void r871xu_dev_remove(struct usb_interface *pusb_intf)
603 {
604         struct net_device *pnetdev = usb_get_intfdata(pusb_intf);
605         struct usb_device *udev = interface_to_usbdev(pusb_intf);
606 
607         if (pnetdev) {
608                 struct _adapter *padapter = netdev_priv(pnetdev);
609 
610                 usb_set_intfdata(pusb_intf, NULL);
611                 release_firmware(padapter->fw);
612                 /* never exit with a firmware callback pending */
613                 wait_for_completion(&padapter->rtl8712_fw_ready);
614                 if (drvpriv.drv_registered == true)
615                         padapter->bSurpriseRemoved = true;
616                 unregister_netdev(pnetdev); /* will call netdev_close() */
617                 flush_scheduled_work();
618                 udelay(1);
619                 /* Stop driver mlme relation timer */
620                 r8712_stop_drv_timers(padapter);
621                 r871x_dev_unload(padapter);
622                 r8712_free_drv_sw(padapter);
623 
624                 /* decrease the reference count of the usb device structure
625                  * when disconnect */
626                 usb_put_dev(udev);
627         }
628         /* If we didn't unplug usb dongle and remove/insert module, driver
629          * fails on sitesurvey for the first time when device is up.
630          * Reset usb port for sitesurvey fail issue. */
631         if (udev->state != USB_STATE_NOTATTACHED)
632                 usb_reset_device(udev);
633 }
634 
635 static int __init r8712u_drv_entry(void)
636 {
637         drvpriv.drv_registered = true;
638         return usb_register(&drvpriv.r871xu_drv);
639 }
640 
641 static void __exit r8712u_drv_halt(void)
642 {
643         drvpriv.drv_registered = false;
644         usb_deregister(&drvpriv.r871xu_drv);
645 }
646 
647 module_init(r8712u_drv_entry);
648 module_exit(r8712u_drv_halt);
649 

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