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 40 /* RTL8188SU */ 41 /* Realtek */ 42 {USB_DEVICE(0x0BDA, 0x8171)}, 43 {USB_DEVICE(0x0bda, 0x8173)}, 44 {USB_DEVICE(0x0bda, 0x8712)}, 45 {USB_DEVICE(0x0bda, 0x8713)}, 46 {USB_DEVICE(0x0bda, 0xC512)}, 47 /* Abocom */ 48 {USB_DEVICE(0x07B8, 0x8188)}, 49 /* ASUS */ 50 {USB_DEVICE(0x0B05, 0x1786)}, 51 {USB_DEVICE(0x0B05, 0x1791)}, /* 11n mode disable */ 52 /* Belkin */ 53 {USB_DEVICE(0x050D, 0x945A)}, 54 /* ISY IWL - Belkin clone */ 55 {USB_DEVICE(0x050D, 0x11F1)}, 56 /* Corega */ 57 {USB_DEVICE(0x07AA, 0x0047)}, 58 /* D-Link */ 59 {USB_DEVICE(0x2001, 0x3306)}, 60 {USB_DEVICE(0x07D1, 0x3306)}, /* 11n mode disable */ 61 /* Edimax */ 62 {USB_DEVICE(0x7392, 0x7611)}, 63 /* EnGenius */ 64 {USB_DEVICE(0x1740, 0x9603)}, 65 /* Hawking */ 66 {USB_DEVICE(0x0E66, 0x0016)}, 67 /* Hercules */ 68 {USB_DEVICE(0x06F8, 0xE034)}, 69 {USB_DEVICE(0x06F8, 0xE032)}, 70 /* Logitec */ 71 {USB_DEVICE(0x0789, 0x0167)}, 72 /* PCI */ 73 {USB_DEVICE(0x2019, 0xAB28)}, 74 {USB_DEVICE(0x2019, 0xED16)}, 75 /* Sitecom */ 76 {USB_DEVICE(0x0DF6, 0x0057)}, 77 {USB_DEVICE(0x0DF6, 0x0045)}, 78 {USB_DEVICE(0x0DF6, 0x0059)}, /* 11n mode disable */ 79 {USB_DEVICE(0x0DF6, 0x004B)}, 80 {USB_DEVICE(0x0DF6, 0x005B)}, 81 {USB_DEVICE(0x0DF6, 0x005D)}, 82 {USB_DEVICE(0x0DF6, 0x0063)}, 83 /* Sweex */ 84 {USB_DEVICE(0x177F, 0x0154)}, 85 /* Thinkware */ 86 {USB_DEVICE(0x0BDA, 0x5077)}, 87 /* Toshiba */ 88 {USB_DEVICE(0x1690, 0x0752)}, 89 /* - */ 90 {USB_DEVICE(0x20F4, 0x646B)}, 91 {USB_DEVICE(0x083A, 0xC512)}, 92 {USB_DEVICE(0x25D4, 0x4CA1)}, 93 {USB_DEVICE(0x25D4, 0x4CAB)}, 94 95 /* RTL8191SU */ 96 /* Realtek */ 97 {USB_DEVICE(0x0BDA, 0x8172)}, 98 {USB_DEVICE(0x0BDA, 0x8192)}, 99 /* Amigo */ 100 {USB_DEVICE(0x0EB0, 0x9061)}, 101 /* ASUS/EKB */ 102 {USB_DEVICE(0x13D3, 0x3323)}, 103 {USB_DEVICE(0x13D3, 0x3311)}, /* 11n mode disable */ 104 {USB_DEVICE(0x13D3, 0x3342)}, 105 /* ASUS/EKBLenovo */ 106 {USB_DEVICE(0x13D3, 0x3333)}, 107 {USB_DEVICE(0x13D3, 0x3334)}, 108 {USB_DEVICE(0x13D3, 0x3335)}, /* 11n mode disable */ 109 {USB_DEVICE(0x13D3, 0x3336)}, /* 11n mode disable */ 110 /* ASUS/Media BOX */ 111 {USB_DEVICE(0x13D3, 0x3309)}, 112 /* Belkin */ 113 {USB_DEVICE(0x050D, 0x815F)}, 114 /* D-Link */ 115 {USB_DEVICE(0x07D1, 0x3302)}, 116 {USB_DEVICE(0x07D1, 0x3300)}, 117 {USB_DEVICE(0x07D1, 0x3303)}, 118 /* Edimax */ 119 {USB_DEVICE(0x7392, 0x7612)}, 120 /* EnGenius */ 121 {USB_DEVICE(0x1740, 0x9605)}, 122 /* Guillemot */ 123 {USB_DEVICE(0x06F8, 0xE031)}, 124 /* Hawking */ 125 {USB_DEVICE(0x0E66, 0x0015)}, 126 /* Mediao */ 127 {USB_DEVICE(0x13D3, 0x3306)}, 128 /* PCI */ 129 {USB_DEVICE(0x2019, 0xED18)}, 130 {USB_DEVICE(0x2019, 0x4901)}, 131 /* Sitecom */ 132 {USB_DEVICE(0x0DF6, 0x0058)}, 133 {USB_DEVICE(0x0DF6, 0x0049)}, 134 {USB_DEVICE(0x0DF6, 0x004C)}, 135 {USB_DEVICE(0x0DF6, 0x006C)}, 136 {USB_DEVICE(0x0DF6, 0x0064)}, 137 /* Skyworth */ 138 {USB_DEVICE(0x14b2, 0x3300)}, 139 {USB_DEVICE(0x14b2, 0x3301)}, 140 {USB_DEVICE(0x14B2, 0x3302)}, 141 /* - */ 142 {USB_DEVICE(0x04F2, 0xAFF2)}, 143 {USB_DEVICE(0x04F2, 0xAFF5)}, 144 {USB_DEVICE(0x04F2, 0xAFF6)}, 145 {USB_DEVICE(0x13D3, 0x3339)}, 146 {USB_DEVICE(0x13D3, 0x3340)}, /* 11n mode disable */ 147 {USB_DEVICE(0x13D3, 0x3341)}, /* 11n mode disable */ 148 {USB_DEVICE(0x13D3, 0x3310)}, 149 {USB_DEVICE(0x13D3, 0x3325)}, 150 151 /* RTL8192SU */ 152 /* Realtek */ 153 {USB_DEVICE(0x0BDA, 0x8174)}, 154 /* Belkin */ 155 {USB_DEVICE(0x050D, 0x845A)}, 156 /* Corega */ 157 {USB_DEVICE(0x07AA, 0x0051)}, 158 /* Edimax */ 159 {USB_DEVICE(0x7392, 0x7622)}, 160 /* NEC */ 161 {USB_DEVICE(0x0409, 0x02B6)}, 162 {} 163 }; 164 165 MODULE_DEVICE_TABLE(usb, rtl871x_usb_id_tbl); 166 167 static struct specific_device_id specific_device_id_tbl[] = { 168 {.idVendor = 0x0b05, .idProduct = 0x1791, 169 .flags = SPEC_DEV_ID_DISABLE_HT}, 170 {.idVendor = 0x0df6, .idProduct = 0x0059, 171 .flags = SPEC_DEV_ID_DISABLE_HT}, 172 {.idVendor = 0x13d3, .idProduct = 0x3306, 173 .flags = SPEC_DEV_ID_DISABLE_HT}, 174 {.idVendor = 0x13D3, .idProduct = 0x3311, 175 .flags = SPEC_DEV_ID_DISABLE_HT}, 176 {.idVendor = 0x13d3, .idProduct = 0x3335, 177 .flags = SPEC_DEV_ID_DISABLE_HT}, 178 {.idVendor = 0x13d3, .idProduct = 0x3336, 179 .flags = SPEC_DEV_ID_DISABLE_HT}, 180 {.idVendor = 0x13d3, .idProduct = 0x3340, 181 .flags = SPEC_DEV_ID_DISABLE_HT}, 182 {.idVendor = 0x13d3, .idProduct = 0x3341, 183 .flags = SPEC_DEV_ID_DISABLE_HT}, 184 {} 185 }; 186 187 struct drv_priv { 188 struct usb_driver r871xu_drv; 189 int drv_registered; 190 }; 191 192 #ifdef CONFIG_PM 193 static int r871x_suspend(struct usb_interface *pusb_intf, pm_message_t state) 194 { 195 struct net_device *pnetdev = usb_get_intfdata(pusb_intf); 196 struct _adapter *padapter = netdev_priv(pnetdev); 197 198 netdev_info(pnetdev, "Suspending...\n"); 199 padapter->suspended = true; 200 rtl871x_intf_stop(padapter); 201 if (pnetdev->netdev_ops->ndo_stop) 202 pnetdev->netdev_ops->ndo_stop(pnetdev); 203 mdelay(10); 204 netif_device_detach(pnetdev); 205 return 0; 206 } 207 208 static void rtl871x_intf_resume(struct _adapter *padapter) 209 { 210 if (padapter->dvobjpriv.inirp_init) 211 padapter->dvobjpriv.inirp_init(padapter); 212 } 213 214 static int r871x_resume(struct usb_interface *pusb_intf) 215 { 216 struct net_device *pnetdev = usb_get_intfdata(pusb_intf); 217 struct _adapter *padapter = netdev_priv(pnetdev); 218 219 netdev_info(pnetdev, "Resuming...\n"); 220 netif_device_attach(pnetdev); 221 if (pnetdev->netdev_ops->ndo_open) 222 pnetdev->netdev_ops->ndo_open(pnetdev); 223 padapter->suspended = false; 224 rtl871x_intf_resume(padapter); 225 return 0; 226 } 227 #endif 228 229 static struct drv_priv drvpriv = { 230 .r871xu_drv.name = "r8712u", 231 .r871xu_drv.id_table = rtl871x_usb_id_tbl, 232 .r871xu_drv.probe = r871xu_drv_init, 233 .r871xu_drv.disconnect = r871xu_dev_remove, 234 #ifdef CONFIG_PM 235 .r871xu_drv.suspend = r871x_suspend, 236 .r871xu_drv.resume = r871x_resume, 237 #endif 238 }; 239 240 static uint r8712_usb_dvobj_init(struct _adapter *padapter) 241 { 242 uint status = _SUCCESS; 243 struct usb_host_interface *phost_iface; 244 struct usb_interface_descriptor *piface_desc; 245 struct dvobj_priv *pdvobjpriv = &padapter->dvobjpriv; 246 struct usb_device *pusbd = pdvobjpriv->pusbdev; 247 248 pdvobjpriv->padapter = padapter; 249 padapter->eeprom_address_size = 6; 250 phost_iface = pintf->cur_altsetting; 251 piface_desc = &phost_iface->desc; 252 pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints; 253 if (pusbd->speed == USB_SPEED_HIGH) { 254 pdvobjpriv->ishighspeed = true; 255 dev_info(&pusbd->dev, "r8712u: USB_SPEED_HIGH with %d endpoints\n", 256 pdvobjpriv->nr_endpoint); 257 } else { 258 pdvobjpriv->ishighspeed = false; 259 dev_info(&pusbd->dev, "r8712u: USB_SPEED_LOW with %d endpoints\n", 260 pdvobjpriv->nr_endpoint); 261 } 262 if ((r8712_alloc_io_queue(padapter)) == _FAIL) 263 status = _FAIL; 264 return status; 265 } 266 267 static void r8712_usb_dvobj_deinit(struct _adapter *padapter) 268 { 269 } 270 271 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 } 287 288 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 /*s6.*/ 307 if (padapter->dvobj_deinit) 308 padapter->dvobj_deinit(padapter); 309 padapter->bup = false; 310 } 311 } 312 313 static void disable_ht_for_spec_devid(const struct usb_device_id *pdid, 314 struct _adapter *padapter) 315 { 316 u16 vid, pid; 317 u32 flags; 318 int i; 319 int num = ARRAY_SIZE(specific_device_id_tbl); 320 321 for (i = 0; i < num; i++) { 322 vid = specific_device_id_tbl[i].idVendor; 323 pid = specific_device_id_tbl[i].idProduct; 324 flags = specific_device_id_tbl[i].flags; 325 326 if ((pdid->idVendor == vid) && (pdid->idProduct == pid) && 327 (flags & SPEC_DEV_ID_DISABLE_HT)) { 328 padapter->registrypriv.ht_enable = 0; 329 padapter->registrypriv.cbw40_enable = 0; 330 padapter->registrypriv.ampdu_enable = 0; 331 } 332 } 333 } 334 335 static const struct device_type wlan_type = { 336 .name = "wlan", 337 }; 338 339 /* 340 * drv_init() - a device potentially for us 341 * 342 * notes: drv_init() is called when the bus driver has located a card for us 343 * to support. We accept the new device by returning 0. 344 */ 345 static int r871xu_drv_init(struct usb_interface *pusb_intf, 346 const struct usb_device_id *pdid) 347 { 348 uint status; 349 struct _adapter *padapter = NULL; 350 struct dvobj_priv *pdvobjpriv; 351 struct net_device *pnetdev; 352 struct usb_device *udev; 353 354 /* In this probe function, O.S. will provide the usb interface pointer 355 * to driver. We have to increase the reference count of the usb device 356 * structure by using the usb_get_dev function. 357 */ 358 udev = interface_to_usbdev(pusb_intf); 359 usb_get_dev(udev); 360 pintf = pusb_intf; 361 /* step 1. */ 362 pnetdev = r8712_init_netdev(); 363 if (!pnetdev) 364 goto error; 365 padapter = netdev_priv(pnetdev); 366 disable_ht_for_spec_devid(pdid, padapter); 367 pdvobjpriv = &padapter->dvobjpriv; 368 pdvobjpriv->padapter = padapter; 369 padapter->dvobjpriv.pusbdev = udev; 370 padapter->pusb_intf = pusb_intf; 371 usb_set_intfdata(pusb_intf, pnetdev); 372 SET_NETDEV_DEV(pnetdev, &pusb_intf->dev); 373 pnetdev->dev.type = &wlan_type; 374 /* step 2. */ 375 padapter->dvobj_init = r8712_usb_dvobj_init; 376 padapter->dvobj_deinit = r8712_usb_dvobj_deinit; 377 padapter->halpriv.hal_bus_init = r8712_usb_hal_bus_init; 378 padapter->dvobjpriv.inirp_init = r8712_usb_inirp_init; 379 padapter->dvobjpriv.inirp_deinit = r8712_usb_inirp_deinit; 380 /* step 3. 381 * initialize the dvobj_priv 382 */ 383 if (!padapter->dvobj_init) { 384 goto error; 385 } else { 386 status = padapter->dvobj_init(padapter); 387 if (status != _SUCCESS) 388 goto error; 389 } 390 /* step 4. */ 391 status = r8712_init_drv_sw(padapter); 392 if (status) 393 goto error; 394 /* step 5. read efuse/eeprom data and get mac_addr */ 395 { 396 int i, offset; 397 u8 mac[6]; 398 u8 tmpU1b, AutoloadFail, eeprom_CustomerID; 399 u8 *pdata = padapter->eeprompriv.efuse_eeprom_data; 400 401 tmpU1b = r8712_read8(padapter, EE_9346CR);/*CR9346*/ 402 403 /* To check system boot selection.*/ 404 dev_info(&udev->dev, "r8712u: Boot from %s: Autoload %s\n", 405 (tmpU1b & _9356SEL) ? "EEPROM" : "EFUSE", 406 (tmpU1b & _EEPROM_EN) ? "OK" : "Failed"); 407 408 /* To check autoload success or not.*/ 409 if (tmpU1b & _EEPROM_EN) { 410 AutoloadFail = true; 411 /* The following operations prevent Efuse leakage by 412 * turning on 2.5V. 413 */ 414 tmpU1b = r8712_read8(padapter, EFUSE_TEST + 3); 415 r8712_write8(padapter, EFUSE_TEST + 3, tmpU1b | 0x80); 416 msleep(20); 417 r8712_write8(padapter, EFUSE_TEST + 3, 418 (tmpU1b & (~BIT(7)))); 419 420 /* Retrieve Chip version. 421 * Recognize IC version by Reg0x4 BIT15. 422 */ 423 tmpU1b = (u8)((r8712_read32(padapter, PMC_FSM) >> 15) & 424 0x1F); 425 if (tmpU1b == 0x3) 426 padapter->registrypriv.chip_version = 427 RTL8712_3rdCUT; 428 else 429 padapter->registrypriv.chip_version = 430 (tmpU1b >> 1) + 1; 431 switch (padapter->registrypriv.chip_version) { 432 case RTL8712_1stCUT: 433 case RTL8712_2ndCUT: 434 case RTL8712_3rdCUT: 435 break; 436 default: 437 padapter->registrypriv.chip_version = 438 RTL8712_2ndCUT; 439 break; 440 } 441 442 for (i = 0, offset = 0; i < 128; i += 8, offset++) 443 r8712_efuse_pg_packet_read(padapter, offset, 444 &pdata[i]); 445 446 if (!r8712_initmac || !mac_pton(r8712_initmac, mac)) { 447 /* Use the mac address stored in the Efuse 448 * offset = 0x12 for usb in efuse 449 */ 450 ether_addr_copy(mac, &pdata[0x12]); 451 } 452 eeprom_CustomerID = pdata[0x52]; 453 switch (eeprom_CustomerID) { 454 case EEPROM_CID_ALPHA: 455 padapter->eeprompriv.CustomerID = 456 RT_CID_819x_ALPHA; 457 break; 458 case EEPROM_CID_CAMEO: 459 padapter->eeprompriv.CustomerID = 460 RT_CID_819x_CAMEO; 461 break; 462 case EEPROM_CID_SITECOM: 463 padapter->eeprompriv.CustomerID = 464 RT_CID_819x_Sitecom; 465 break; 466 case EEPROM_CID_COREGA: 467 padapter->eeprompriv.CustomerID = 468 RT_CID_COREGA; 469 break; 470 case EEPROM_CID_Senao: 471 padapter->eeprompriv.CustomerID = 472 RT_CID_819x_Senao; 473 break; 474 case EEPROM_CID_EDIMAX_BELKIN: 475 padapter->eeprompriv.CustomerID = 476 RT_CID_819x_Edimax_Belkin; 477 break; 478 case EEPROM_CID_SERCOMM_BELKIN: 479 padapter->eeprompriv.CustomerID = 480 RT_CID_819x_Sercomm_Belkin; 481 break; 482 case EEPROM_CID_WNC_COREGA: 483 padapter->eeprompriv.CustomerID = 484 RT_CID_819x_WNC_COREGA; 485 break; 486 case EEPROM_CID_WHQL: 487 break; 488 case EEPROM_CID_NetCore: 489 padapter->eeprompriv.CustomerID = 490 RT_CID_819x_Netcore; 491 break; 492 case EEPROM_CID_CAMEO1: 493 padapter->eeprompriv.CustomerID = 494 RT_CID_819x_CAMEO1; 495 break; 496 case EEPROM_CID_CLEVO: 497 padapter->eeprompriv.CustomerID = 498 RT_CID_819x_CLEVO; 499 break; 500 default: 501 padapter->eeprompriv.CustomerID = 502 RT_CID_DEFAULT; 503 break; 504 } 505 dev_info(&udev->dev, "r8712u: CustomerID = 0x%.4x\n", 506 padapter->eeprompriv.CustomerID); 507 /* Led mode */ 508 switch (padapter->eeprompriv.CustomerID) { 509 case RT_CID_DEFAULT: 510 case RT_CID_819x_ALPHA: 511 case RT_CID_819x_CAMEO: 512 padapter->ledpriv.LedStrategy = SW_LED_MODE1; 513 padapter->ledpriv.bRegUseLed = true; 514 break; 515 case RT_CID_819x_Sitecom: 516 padapter->ledpriv.LedStrategy = SW_LED_MODE2; 517 padapter->ledpriv.bRegUseLed = true; 518 break; 519 case RT_CID_COREGA: 520 case RT_CID_819x_Senao: 521 padapter->ledpriv.LedStrategy = SW_LED_MODE3; 522 padapter->ledpriv.bRegUseLed = true; 523 break; 524 case RT_CID_819x_Edimax_Belkin: 525 padapter->ledpriv.LedStrategy = SW_LED_MODE4; 526 padapter->ledpriv.bRegUseLed = true; 527 break; 528 case RT_CID_819x_Sercomm_Belkin: 529 padapter->ledpriv.LedStrategy = SW_LED_MODE5; 530 padapter->ledpriv.bRegUseLed = true; 531 break; 532 case RT_CID_819x_WNC_COREGA: 533 padapter->ledpriv.LedStrategy = SW_LED_MODE6; 534 padapter->ledpriv.bRegUseLed = true; 535 break; 536 default: 537 padapter->ledpriv.LedStrategy = SW_LED_MODE0; 538 padapter->ledpriv.bRegUseLed = false; 539 break; 540 } 541 } else { 542 AutoloadFail = false; 543 } 544 if (((mac[0] == 0xff) && (mac[1] == 0xff) && 545 (mac[2] == 0xff) && (mac[3] == 0xff) && 546 (mac[4] == 0xff) && (mac[5] == 0xff)) || 547 ((mac[0] == 0x00) && (mac[1] == 0x00) && 548 (mac[2] == 0x00) && (mac[3] == 0x00) && 549 (mac[4] == 0x00) && (mac[5] == 0x00)) || 550 (!AutoloadFail)) { 551 mac[0] = 0x00; 552 mac[1] = 0xe0; 553 mac[2] = 0x4c; 554 mac[3] = 0x87; 555 mac[4] = 0x00; 556 mac[5] = 0x00; 557 } 558 if (r8712_initmac) { 559 /* Make sure the user did not select a multicast 560 * address by setting bit 1 of first octet. 561 */ 562 mac[0] &= 0xFE; 563 dev_info(&udev->dev, 564 "r8712u: MAC Address from user = %pM\n", mac); 565 } else { 566 dev_info(&udev->dev, 567 "r8712u: MAC Address from efuse = %pM\n", mac); 568 } 569 ether_addr_copy(pnetdev->dev_addr, mac); 570 } 571 /* step 6. Load the firmware asynchronously */ 572 if (rtl871x_load_fw(padapter)) 573 goto error; 574 spin_lock_init(&padapter->lock_rx_ff0_filter); 575 mutex_init(&padapter->mutex_start); 576 return 0; 577 error: 578 usb_put_dev(udev); 579 usb_set_intfdata(pusb_intf, NULL); 580 if (padapter && padapter->dvobj_deinit != NULL) 581 padapter->dvobj_deinit(padapter); 582 if (pnetdev) 583 free_netdev(pnetdev); 584 return -ENODEV; 585 } 586 587 /* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove() 588 * => how to recognize both 589 */ 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); 594 595 if (pnetdev) { 596 struct _adapter *padapter = netdev_priv(pnetdev); 597 598 usb_set_intfdata(pusb_intf, NULL); 599 release_firmware(padapter->fw); 600 /* never exit with a firmware callback pending */ 601 wait_for_completion(&padapter->rtl8712_fw_ready); 602 if (drvpriv.drv_registered) 603 padapter->surprise_removed = true; 604 unregister_netdev(pnetdev); /* will call netdev_close() */ 605 flush_scheduled_work(); 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); 611 612 /* decrease the reference count of the usb device structure 613 * when disconnect 614 */ 615 usb_put_dev(udev); 616 } 617 /* If we didn't unplug usb dongle and remove/insert module, driver 618 * fails on sitesurvey for the first time when device is up. 619 * Reset usb port for sitesurvey fail issue. 620 */ 621 if (udev->state != USB_STATE_NOTATTACHED) 622 usb_reset_device(udev); 623 } 624 625 static int __init r8712u_drv_entry(void) 626 { 627 drvpriv.drv_registered = true; 628 return usb_register(&drvpriv.r871xu_drv); 629 } 630 631 static void __exit r8712u_drv_halt(void) 632 { 633 drvpriv.drv_registered = false; 634 usb_deregister(&drvpriv.r871xu_drv); 635 } 636 637 module_init(r8712u_drv_entry); 638 module_exit(r8712u_drv_halt); 639