drivers/staging/vt6656/usbpipe.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  *
  20  * File: usbpipe.c
  21  *
  22  * Purpose: Handle USB control endpoint
  23  *
  24  * Author: Warren Hsu
  25  *
  26  * Date: Mar. 29, 2005
  27  *
  28  * Functions:
  29  *      CONTROLnsRequestOut - Write variable length bytes to MEM/BB/MAC/EEPROM
  30  *      CONTROLnsRequestIn - Read variable length bytes from MEM/BB/MAC/EEPROM
  31  *      ControlvWriteByte - Write one byte to MEM/BB/MAC/EEPROM
  32  *      ControlvReadByte - Read one byte from MEM/BB/MAC/EEPROM
  33  *      ControlvMaskByte - Read one byte from MEM/BB/MAC/EEPROM and clear/set some bits in the same address
  34  *
  35  * Revision History:
  36  *      04-05-2004 Jerry Chen:  Initial release
  37  *      11-24-2004 Warren Hsu: Add ControlvWriteByte,ControlvReadByte,ControlvMaskByte
  38  *
  39  */
  40
  41 #include "int.h"
  42 #include "rxtx.h"
  43 #include "dpc.h"
  44 #include "control.h"
  45 #include "desc.h"
  46 #include "device.h"
  47
  48 //endpoint def
  49 //endpoint 0: control
  50 //endpoint 1: interrupt
  51 //endpoint 2: read bulk
  52 //endpoint 3: write bulk
  53
  54 //static int          msglevel                =MSG_LEVEL_DEBUG;
  55 static int          msglevel                =MSG_LEVEL_INFO;
  56
  57 #define USB_CTL_WAIT   500 //ms
  58
  59 #ifndef URB_ASYNC_UNLINK
  60 #define URB_ASYNC_UNLINK    0
  61 #endif
  62
  63 static void s_nsInterruptUsbIoCompleteRead(struct urb *urb);
  64 static void s_nsBulkInUsbIoCompleteRead(struct urb *urb);
  65 static void s_nsBulkOutIoCompleteWrite(struct urb *urb);
  66 static void s_nsControlInUsbIoCompleteRead(struct urb *urb);
  67 static void s_nsControlInUsbIoCompleteWrite(struct urb *urb);
  68
  69 int PIPEnsControlOutAsyn(struct vnt_private *pDevice, u8 byRequest,
  70         u16 wValue, u16 wIndex, u16 wLength, u8 *pbyBuffer)
  71 {
  72         int ntStatus;
  73
  74     if (pDevice->Flags & fMP_DISCONNECTED)
  75         return STATUS_FAILURE;
  76
  77     if (pDevice->Flags & fMP_CONTROL_WRITES)
  78         return STATUS_FAILURE;
  79
  80     if (in_interrupt()) {
  81         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"in_interrupt return ..byRequest %x\n", byRequest);
  82         return STATUS_FAILURE;
  83     }
  84
  85     ntStatus = usb_control_msg(
  86                             pDevice->usb,
  87                             usb_sndctrlpipe(pDevice->usb , 0),
  88                             byRequest,
  89                             0x40, // RequestType
  90                             wValue,
  91                             wIndex,
  92                             (void *) pbyBuffer,
  93                             wLength,
  94                             HZ
  95                           );
  96     if (ntStatus >= 0) {
  97         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"usb_sndctrlpipe ntStatus= %d\n", ntStatus);
  98         ntStatus = 0;
  99     } else {
 100         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"usb_sndctrlpipe fail, ntStatus= %d\n", ntStatus);
 101     }
 102
 103     return ntStatus;
 104 }
 105
 106 int PIPEnsControlOut(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
 107                 u16 wIndex, u16 wLength, u8 *pbyBuffer)
 108                 __releases(&pDevice->lock)
 109                 __acquires(&pDevice->lock)
 110 {
 111         int ntStatus = 0;
 112         int ii;
 113
 114     if (pDevice->Flags & fMP_DISCONNECTED)
 115         return STATUS_FAILURE;
 116
 117     if (pDevice->Flags & fMP_CONTROL_WRITES)
 118         return STATUS_FAILURE;
 119
 120         if (pDevice->Flags & fMP_CONTROL_READS)
 121                 return STATUS_FAILURE;
 122
 123         if (pDevice->pControlURB->hcpriv)
 124                 return STATUS_FAILURE;
 125
 126         MP_SET_FLAG(pDevice, fMP_CONTROL_WRITES);
 127
 128         pDevice->sUsbCtlRequest.bRequestType = 0x40;
 129         pDevice->sUsbCtlRequest.bRequest = byRequest;
 130         pDevice->sUsbCtlRequest.wValue = cpu_to_le16p(&wValue);
 131         pDevice->sUsbCtlRequest.wIndex = cpu_to_le16p(&wIndex);
 132         pDevice->sUsbCtlRequest.wLength = cpu_to_le16p(&wLength);
 133         pDevice->pControlURB->transfer_flags |= URB_ASYNC_UNLINK;
 134     pDevice->pControlURB->actual_length = 0;
 135     // Notice, pbyBuffer limited point to variable buffer, can't be constant.
 136         usb_fill_control_urb(pDevice->pControlURB, pDevice->usb,
 137                          usb_sndctrlpipe(pDevice->usb , 0), (char *) &pDevice->sUsbCtlRequest,
 138                          pbyBuffer, wLength, s_nsControlInUsbIoCompleteWrite, pDevice);
 139
 140         ntStatus = usb_submit_urb(pDevice->pControlURB, GFP_ATOMIC);
 141         if (ntStatus != 0) {
 142                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 143                         "control send request submission failed: %d\n",
 144                                 ntStatus);
 145                 MP_CLEAR_FLAG(pDevice, fMP_CONTROL_WRITES);
 146                 return STATUS_FAILURE;
 147         }
 148
 149         spin_unlock_irq(&pDevice->lock);
 150     for (ii = 0; ii <= USB_CTL_WAIT; ii ++) {
 151
 152         if (pDevice->Flags & fMP_CONTROL_WRITES)
 153                 mdelay(1);
 154         else
 155                 break;
 156
 157         if (ii >= USB_CTL_WAIT) {
 158                 DBG_PRT(MSG_LEVEL_DEBUG,
 159                         KERN_INFO "control send request submission timeout\n");
 160             spin_lock_irq(&pDevice->lock);
 161             MP_CLEAR_FLAG(pDevice, fMP_CONTROL_WRITES);
 162             return STATUS_FAILURE;
 163         }
 164     }
 165         spin_lock_irq(&pDevice->lock);
 166
 167     return STATUS_SUCCESS;
 168 }
 169
 170 int PIPEnsControlIn(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
 171         u16 wIndex, u16 wLength,  u8 *pbyBuffer)
 172         __releases(&pDevice->lock)
 173         __acquires(&pDevice->lock)
 174 {
 175         int ntStatus = 0;
 176         int ii;
 177
 178     if (pDevice->Flags & fMP_DISCONNECTED)
 179         return STATUS_FAILURE;
 180
 181     if (pDevice->Flags & fMP_CONTROL_READS)
 182         return STATUS_FAILURE;
 183
 184         if (pDevice->Flags & fMP_CONTROL_WRITES)
 185                 return STATUS_FAILURE;
 186
 187         if (pDevice->pControlURB->hcpriv)
 188                 return STATUS_FAILURE;
 189
 190         MP_SET_FLAG(pDevice, fMP_CONTROL_READS);
 191
 192         pDevice->sUsbCtlRequest.bRequestType = 0xC0;
 193         pDevice->sUsbCtlRequest.bRequest = byRequest;
 194         pDevice->sUsbCtlRequest.wValue = cpu_to_le16p(&wValue);
 195         pDevice->sUsbCtlRequest.wIndex = cpu_to_le16p(&wIndex);
 196         pDevice->sUsbCtlRequest.wLength = cpu_to_le16p(&wLength);
 197         pDevice->pControlURB->transfer_flags |= URB_ASYNC_UNLINK;
 198     pDevice->pControlURB->actual_length = 0;
 199         usb_fill_control_urb(pDevice->pControlURB, pDevice->usb,
 200                          usb_rcvctrlpipe(pDevice->usb , 0), (char *) &pDevice->sUsbCtlRequest,
 201                          pbyBuffer, wLength, s_nsControlInUsbIoCompleteRead, pDevice);
 202
 203         ntStatus = usb_submit_urb(pDevice->pControlURB, GFP_ATOMIC);
 204         if (ntStatus != 0) {
 205                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 206                         "control request submission failed: %d\n", ntStatus);
 207                 MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
 208                 return STATUS_FAILURE;
 209         }
 210
 211         spin_unlock_irq(&pDevice->lock);
 212     for (ii = 0; ii <= USB_CTL_WAIT; ii ++) {
 213
 214         if (pDevice->Flags & fMP_CONTROL_READS)
 215                 mdelay(1);
 216         else
 217                 break;
 218
 219         if (ii >= USB_CTL_WAIT) {
 220                 DBG_PRT(MSG_LEVEL_DEBUG,
 221                         KERN_INFO "control rcv request submission timeout\n");
 222             spin_lock_irq(&pDevice->lock);
 223             MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
 224             return STATUS_FAILURE;
 225         }
 226     }
 227         spin_lock_irq(&pDevice->lock);
 228
 229     return ntStatus;
 230 }
 231
 232 static void s_nsControlInUsbIoCompleteWrite(struct urb *urb)
 233 {
 234         struct vnt_private *pDevice = (struct vnt_private *)urb->context;
 235
 236         pDevice = urb->context;
 237         switch (urb->status) {
 238         case 0:
 239                 break;
 240         case -EINPROGRESS:
 241                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl write urb status EINPROGRESS%d\n", urb->status);
 242                 break;
 243         case -ENOENT:
 244                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl write urb status ENOENT %d\n", urb->status);
 245                 break;
 246         default:
 247                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl write urb status %d\n", urb->status);
 248         }
 249
 250     MP_CLEAR_FLAG(pDevice, fMP_CONTROL_WRITES);
 251 }
 252
 253 /*
 254  * Description:
 255  *      Complete function of usb Control callback
 256  *
 257  * Parameters:
 258  *  In:
 259  *      pDevice     - Pointer to the adapter
 260  *
 261  *  Out:
 262  *      none
 263  *
 264  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 265  *
 266  */
 267
 268 static void s_nsControlInUsbIoCompleteRead(struct urb *urb)
 269 {
 270         struct vnt_private *pDevice = (struct vnt_private *)urb->context;
 271
 272         switch (urb->status) {
 273         case 0:
 274                 break;
 275         case -EINPROGRESS:
 276                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status EINPROGRESS%d\n", urb->status);
 277                 break;
 278         case -ENOENT:
 279                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status = ENOENT %d\n", urb->status);
 280                 break;
 281         default:
 282                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status %d\n", urb->status);
 283         }
 284
 285     MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
 286 }
 287
 288 /*
 289  * Description:
 290  *      Allocates an usb interrupt in irp and calls USBD.
 291  *
 292  * Parameters:
 293  *  In:
 294  *      pDevice     - Pointer to the adapter
 295  *  Out:
 296  *      none
 297  *
 298  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 299  *
 300  */
 301
 302 int PIPEnsInterruptRead(struct vnt_private *priv)
 303 {
 304         int status = STATUS_FAILURE;
 305
 306         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 307                         "---->s_nsStartInterruptUsbRead()\n");
 308
 309         if (priv->int_buf.in_use == true)
 310                 return STATUS_FAILURE;
 311
 312         priv->int_buf.in_use = true;
 313
 314         usb_fill_int_urb(priv->pInterruptURB,
 315                 priv->usb,
 316                 usb_rcvintpipe(priv->usb, 1),
 317                 priv->int_buf.data_buf,
 318                 MAX_INTERRUPT_SIZE,
 319                 s_nsInterruptUsbIoCompleteRead,
 320                 priv,
 321                 priv->int_interval);
 322
 323         status = usb_submit_urb(priv->pInterruptURB, GFP_ATOMIC);
 324         if (status) {
 325                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 326                         "Submit int URB failed %d\n", status);
 327                 priv->int_buf.in_use = false;
 328         }
 329
 330         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 331                 "<----s_nsStartInterruptUsbRead Return(%x)\n", status);
 332
 333         return status;
 334 }
 335
 336 /*
 337  * Description:
 338  *      Complete function of usb interrupt in irp.
 339  *
 340  * Parameters:
 341  *  In:
 342  *      pDevice     - Pointer to the adapter
 343  *
 344  *  Out:
 345  *      none
 346  *
 347  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 348  *
 349  */
 350
 351 static void s_nsInterruptUsbIoCompleteRead(struct urb *urb)
 352 {
 353         struct vnt_private *priv = urb->context;
 354         int status;
 355
 356         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 357                         "---->s_nsInterruptUsbIoCompleteRead\n");
 358
 359         switch (urb->status) {
 360         case 0:
 361         case -ETIMEDOUT:
 362                 break;
 363         case -ECONNRESET:
 364         case -ENOENT:
 365         case -ESHUTDOWN:
 366                 priv->int_buf.in_use = false;
 367                 return;
 368         default:
 369                 break;
 370         }
 371
 372         status = urb->status;
 373
 374         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 375                 "s_nsInterruptUsbIoCompleteRead Status %d\n", status);
 376
 377         if (status != STATUS_SUCCESS) {
 378                 priv->int_buf.in_use = false;
 379
 380                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 381                         "IntUSBIoCompleteControl STATUS = %d\n", status);
 382         } else {
 383                 INTnsProcessData(priv);
 384         }
 385
 386         status = usb_submit_urb(priv->pInterruptURB, GFP_ATOMIC);
 387         if (status) {
 388                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 389                         "Submit int URB failed %d\n", status);
 390         } else {
 391                 priv->int_buf.in_use = true;
 392         }
 393
 394         return;
 395 }
 396
 397 /*
 398  * Description:
 399  *      Allocates an usb BulkIn  irp and calls USBD.
 400  *
 401  * Parameters:
 402  *  In:
 403  *      pDevice     - Pointer to the adapter
 404  *  Out:
 405  *      none
 406  *
 407  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 408  *
 409  */
 410
 411 int PIPEnsBulkInUsbRead(struct vnt_private *priv, struct vnt_rcb *rcb)
 412 {
 413         int status = 0;
 414         struct urb *urb;
 415
 416         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsStartBulkInUsbRead\n");
 417
 418         if (priv->Flags & fMP_DISCONNECTED)
 419                 return STATUS_FAILURE;
 420
 421         urb = rcb->pUrb;
 422         if (rcb->skb == NULL) {
 423                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"rcb->skb is null\n");
 424                 return status;
 425         }
 426
 427         usb_fill_bulk_urb(urb,
 428                 priv->usb,
 429                 usb_rcvbulkpipe(priv->usb, 2),
 430                 (void *) (rcb->skb->data),
 431                 MAX_TOTAL_SIZE_WITH_ALL_HEADERS,
 432                 s_nsBulkInUsbIoCompleteRead,
 433                 rcb);
 434
 435         status = usb_submit_urb(urb, GFP_ATOMIC);
 436         if (status != 0) {
 437                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 438                                 "Submit Rx URB failed %d\n", status);
 439                 return STATUS_FAILURE ;
 440         }
 441
 442         rcb->Ref = 1;
 443         rcb->bBoolInUse = true;
 444
 445         return status;
 446 }
 447
 448 /*
 449  * Description:
 450  *      Complete function of usb BulkIn irp.
 451  *
 452  * Parameters:
 453  *  In:
 454  *      pDevice     - Pointer to the adapter
 455  *
 456  *  Out:
 457  *      none
 458  *
 459  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 460  *
 461  */
 462
 463 static void s_nsBulkInUsbIoCompleteRead(struct urb *urb)
 464 {
 465         struct vnt_rcb *rcb = urb->context;
 466         struct vnt_private *priv = rcb->pDevice;
 467         int re_alloc_skb = false;
 468
 469         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsBulkInUsbIoCompleteRead\n");
 470
 471         switch (urb->status) {
 472         case 0:
 473                 break;
 474         case -ECONNRESET:
 475         case -ENOENT:
 476         case -ESHUTDOWN:
 477                 return;
 478         case -ETIMEDOUT:
 479         default:
 480                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 481                                 "BULK In failed %d\n", urb->status);
 482                 break;
 483         }
 484
 485         if (urb->actual_length) {
 486                 spin_lock(&priv->lock);
 487
 488                 if (RXbBulkInProcessData(priv, rcb, urb->actual_length) == true)
 489                         re_alloc_skb = true;
 490
 491                 spin_unlock(&priv->lock);
 492         }
 493
 494         rcb->Ref--;
 495         if (rcb->Ref == 0) {
 496                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"RxvFreeNormal %d\n",
 497                                                         priv->NumRecvFreeList);
 498                 spin_lock(&priv->lock);
 499
 500                 RXvFreeRCB(rcb, re_alloc_skb);
 501
 502                 spin_unlock(&priv->lock);
 503         }
 504
 505         return;
 506 }
 507
 508 /*
 509  * Description:
 510  *      Allocates an usb BulkOut  irp and calls USBD.
 511  *
 512  * Parameters:
 513  *  In:
 514  *      pDevice     - Pointer to the adapter
 515  *  Out:
 516  *      none
 517  *
 518  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 519  *
 520  */
 521
 522 int PIPEnsSendBulkOut(struct vnt_private *priv,
 523                                 struct vnt_usb_send_context *context)
 524 {
 525         int status;
 526         struct urb *urb;
 527
 528         priv->bPWBitOn = false;
 529
 530         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"s_nsSendBulkOut\n");
 531
 532         if (!(MP_IS_READY(priv) && priv->Flags & fMP_POST_WRITES)) {
 533                 context->bBoolInUse = false;
 534                 return STATUS_RESOURCES;
 535         }
 536
 537         urb = context->pUrb;
 538
 539         usb_fill_bulk_urb(urb,
 540                         priv->usb,
 541                         usb_sndbulkpipe(priv->usb, 3),
 542                         context->Data,
 543                         context->uBufLen,
 544                         s_nsBulkOutIoCompleteWrite,
 545                         context);
 546
 547         status = usb_submit_urb(urb, GFP_ATOMIC);
 548         if (status != 0) {
 549                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 550                                 "Submit Tx URB failed %d\n", status);
 551                 context->bBoolInUse = false;
 552                 return STATUS_FAILURE;
 553         }
 554
 555         return STATUS_PENDING;
 556 }
 557
 558 /*
 559  * Description: s_nsBulkOutIoCompleteWrite
 560  *     1a) Indicate to the protocol the status of the write.
 561  *     1b) Return ownership of the packet to the protocol.
 562  *
 563  *     2)  If any more packets are queue for sending, send another packet
 564  *         to USBD.
 565  *         If the attempt to send the packet to the driver fails,
 566  *         return ownership of the packet to the protocol and
 567  *         try another packet (until one succeeds).
 568  *
 569  * Parameters:
 570  *  In:
 571  *      pdoUsbDevObj  - pointer to the USB device object which
 572  *                      completed the irp
 573  *      pIrp          - the irp which was completed by the
 574  *                      device object
 575  *      pContext      - the context given to IoSetCompletionRoutine
 576  *                      before calling IoCallDriver on the irp
 577  *                      The pContext is a pointer to the USB device object.
 578  *  Out:
 579  *      none
 580  *
 581  * Return Value: STATUS_MORE_PROCESSING_REQUIRED - allows the completion routine
 582  *               (IofCompleteRequest) to stop working on the irp.
 583  *
 584  */
 585
 586 static void s_nsBulkOutIoCompleteWrite(struct urb *urb)
 587 {
 588         struct vnt_usb_send_context *context = urb->context;
 589         struct vnt_private *priv = context->pDevice;
 590         u8 context_type = context->type;
 591
 592         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsBulkOutIoCompleteWrite\n");
 593
 594         switch (urb->status) {
 595         case 0:
 596                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 597                         "Write %d bytes\n", context->uBufLen);
 598                 break;
 599         case -ECONNRESET:
 600         case -ENOENT:
 601         case -ESHUTDOWN:
 602                 context->bBoolInUse = false;
 603                 return;
 604         case -ETIMEDOUT:
 605         default:
 606                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 607                                 "BULK Out failed %d\n", urb->status);
 608                 break;
 609         }
 610
 611         if (!netif_device_present(priv->dev))
 612                 return;
 613
 614         if (CONTEXT_DATA_PACKET == context_type) {
 615                 if (context->pPacket != NULL) {
 616                         dev_kfree_skb_irq(context->pPacket);
 617                         context->pPacket = NULL;
 618                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 619                                 "tx  %d bytes\n", context->uBufLen);
 620                 }
 621
 622                 priv->dev->trans_start = jiffies;
 623         }
 624
 625         if (priv->bLinkPass == true) {
 626                 if (netif_queue_stopped(priv->dev))
 627                         netif_wake_queue(priv->dev);
 628         }
 629
 630         context->bBoolInUse = false;
 631
 632         return;
 633 }