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 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 } 206 207 static void rtl871x_intf_resume(struct _adapter *padapter) 208 { 209 if (padapter->dvobjpriv.inirp_init) 210 padapter->dvobjpriv.inirp_init(padapter); 211 } 212 213 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 }; 238 239 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 } 265 266 static void r8712_usb_dvobj_deinit(struct _adapter *padapter) 267 { 268 } 269 270 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 } 286 287 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 } 311 312 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 */ 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 ether_addr_copy(pnetdev->dev_addr, 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 */ 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 /* never exit with a firmware callback pending */ 599 wait_for_completion(&padapter->rtl8712_fw_ready); 600 pnetdev = usb_get_intfdata(pusb_intf); 601 usb_set_intfdata(pusb_intf, NULL); 602 if (!pnetdev) 603 goto firmware_load_fail; 604 release_firmware(padapter->fw); 605 if (drvpriv.drv_registered) 606 padapter->surprise_removed = true; 607 if (pnetdev->reg_state != NETREG_UNINITIALIZED) 608 unregister_netdev(pnetdev); /* will call netdev_close() */ 609 flush_scheduled_work(); 610 udelay(1); 611 /* Stop driver mlme relation timer */ 612 r8712_stop_drv_timers(padapter); 613 r871x_dev_unload(padapter); 614 r8712_free_drv_sw(padapter); 615 free_netdev(pnetdev); 616 617 /* decrease the reference count of the usb device structure 618 * when disconnect 619 */ 620 usb_put_dev(udev); 621 } 622 firmware_load_fail: 623 /* If we didn't unplug usb dongle and remove/insert module, driver 624 * fails on sitesurvey for the first time when device is up. 625 * Reset usb port for sitesurvey fail issue. 626 */ 627 if (udev->state != USB_STATE_NOTATTACHED) 628 usb_reset_device(udev); 629 } 630 631 static int __init r8712u_drv_entry(void) 632 { 633 drvpriv.drv_registered = true; 634 return usb_register(&drvpriv.r871xu_drv); 635 } 636 637 static void __exit r8712u_drv_halt(void) 638 { 639 drvpriv.drv_registered = false; 640 usb_deregister(&drvpriv.r871xu_drv); 641 } 642 643 module_init(r8712u_drv_entry); 644 module_exit(r8712u_drv_halt); 645