drivers/staging/keucr/usb.c

   1 #include <linux/sched.h>
   2 #include <linux/errno.h>
   3 #include <linux/freezer.h>
   4 #include <linux/module.h>
   5 #include <linux/init.h>
   6 #include <linux/slab.h>
   7 #include <linux/kthread.h>
   8 #include <linux/mutex.h>
   9 #include <linux/utsname.h>
  10
  11 #include <scsi/scsi.h>
  12 #include <scsi/scsi_cmnd.h>
  13 #include <scsi/scsi_device.h>
  14
  15 #include "usb.h"
  16 #include "scsiglue.h"
  17 #include "transport.h"
  18
  19 /* Some informational data */
  20 MODULE_AUTHOR("Domao");
  21 MODULE_DESCRIPTION("ENE USB Mass Storage driver for Linux");
  22 MODULE_LICENSE("GPL");
  23
  24 static struct usb_device_id eucr_usb_ids [] = {
  25         { USB_DEVICE(0x058f, 0x6366) },
  26         { USB_DEVICE(0x0cf2, 0x6230) },
  27         { USB_DEVICE(0x0cf2, 0x6250) },
  28         { }                                            /* Terminating entry */
  29 };
  30 MODULE_DEVICE_TABLE (usb, eucr_usb_ids);
  31
  32
  33 #ifdef CONFIG_PM
  34
  35 int eucr_suspend(struct usb_interface *iface, pm_message_t message)
  36 {
  37         struct us_data *us = usb_get_intfdata(iface);
  38         printk("--- eucr_suspend ---\n");
  39         /* Wait until no command is running */
  40         mutex_lock(&us->dev_mutex);
  41
  42         //US_DEBUGP("%s\n", __func__);
  43         if (us->suspend_resume_hook)
  44                 (us->suspend_resume_hook)(us, US_SUSPEND);
  45
  46         /* When runtime PM is working, we'll set a flag to indicate
  47          * whether we should autoresume when a SCSI request arrives. */
  48         // us->Power_IsResum = true;
  49         //us->SD_Status.Ready = 0;
  50
  51         mutex_unlock(&us->dev_mutex);
  52         return 0;
  53 }
  54 //EXPORT_SYMBOL_GPL(eucr_suspend);
  55
  56 int eucr_resume(struct usb_interface *iface)
  57 {
  58         BYTE    tmp = 0;
  59
  60         struct us_data *us = usb_get_intfdata(iface);
  61         printk("--- eucr_resume---\n");
  62         mutex_lock(&us->dev_mutex);
  63
  64         //US_DEBUGP("%s\n", __func__);
  65         if (us->suspend_resume_hook)
  66                 (us->suspend_resume_hook)(us, US_RESUME);
  67
  68
  69         mutex_unlock(&us->dev_mutex);
  70
  71
  72          us->Power_IsResum = true;
  73         //
  74         //us->SD_Status.Ready = 0; //??
  75         us->SD_Status = *(PSD_STATUS)&tmp;
  76         us->MS_Status = *(PMS_STATUS)&tmp;
  77         us->SM_Status = *(PSM_STATUS)&tmp;
  78
  79         return 0;
  80 }
  81 //EXPORT_SYMBOL_GPL(eucr_resume);
  82 int eucr_reset_resume(struct usb_interface *iface)
  83 {
  84         BYTE    tmp = 0;
  85         struct us_data *us = usb_get_intfdata(iface);
  86
  87         printk("--- eucr_reset_resume---\n");
  88         //US_DEBUGP("%s\n", __func__);
  89
  90         /* Report the reset to the SCSI core */
  91         usb_stor_report_bus_reset(us);
  92
  93         /* FIXME: Notify the subdrivers that they need to reinitialize
  94          * the device */
  95         //ENE_InitMedia(us);
  96         us->Power_IsResum = true;
  97         //
  98         //us->SD_Status.Ready = 0; //??
  99         us->SD_Status = *(PSD_STATUS)&tmp;
 100         us->MS_Status = *(PMS_STATUS)&tmp;
 101         us->SM_Status = *(PSM_STATUS)&tmp;
 102         return 0;
 103 }
 104 //EXPORT_SYMBOL_GPL(usb_stor_reset_resume);
 105
 106 #else
 107
 108 #define eucr_suspend            NULL
 109 #define eucr_resume             NULL
 110 #define eucr_reset_resume       NULL
 111
 112 #endif
 113
 114 //----- eucr_pre_reset() ---------------------
 115 static int eucr_pre_reset(struct usb_interface *iface)
 116 {
 117         struct us_data *us = usb_get_intfdata(iface);
 118
 119       printk("usb --- eucr_pre_reset\n");
 120
 121         /* Make sure no command runs during the reset */
 122         mutex_lock(&us->dev_mutex);
 123         return 0;
 124 }
 125
 126 //----- eucr_post_reset() ---------------------
 127 static int eucr_post_reset(struct usb_interface *iface)
 128 {
 129         struct us_data *us = usb_get_intfdata(iface);
 130
 131       printk("usb --- eucr_post_reset\n");
 132
 133         /* Report the reset to the SCSI core */
 134         usb_stor_report_bus_reset(us);
 135
 136         mutex_unlock(&us->dev_mutex);
 137         return 0;
 138 }
 139
 140 //----- fill_inquiry_response() ---------------------
 141 void fill_inquiry_response(struct us_data *us, unsigned char *data, unsigned int data_len)
 142 {
 143       printk("usb --- fill_inquiry_response\n");
 144         if (data_len<36) // You lose.
 145                 return;
 146
 147         if (data[0]&0x20)
 148         {
 149                 memset(data+8,0,28);
 150         }
 151         else
 152         {
 153                 u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice);
 154                 memcpy(data+8, us->unusual_dev->vendorName,
 155                         strlen(us->unusual_dev->vendorName) > 8 ? 8 :
 156                         strlen(us->unusual_dev->vendorName));
 157                 memcpy(data+16, us->unusual_dev->productName,
 158                         strlen(us->unusual_dev->productName) > 16 ? 16 :
 159                         strlen(us->unusual_dev->productName));
 160                 data[32] = 0x30 + ((bcdDevice>>12) & 0x0F);
 161                 data[33] = 0x30 + ((bcdDevice>>8) & 0x0F);
 162                 data[34] = 0x30 + ((bcdDevice>>4) & 0x0F);
 163                 data[35] = 0x30 + ((bcdDevice) & 0x0F);
 164         }
 165         usb_stor_set_xfer_buf(us, data, data_len, us->srb, TO_XFER_BUF);
 166 }
 167
 168 //----- usb_stor_control_thread() ---------------------
 169 static int usb_stor_control_thread(void * __us)
 170 {
 171         struct us_data *us = (struct us_data *)__us;
 172         struct Scsi_Host *host = us_to_host(us);
 173
 174       printk("usb --- usb_stor_control_thread\n");
 175         for(;;)
 176         {
 177                 if (wait_for_completion_interruptible(&us->cmnd_ready))
 178                         break;
 179
 180                 /* lock the device pointers */
 181                 mutex_lock(&(us->dev_mutex));
 182
 183                 /* if the device has disconnected, we are free to exit */
 184 /*              if (test_bit(US_FLIDX_DISCONNECTING, &us->flags))
 185                 {
 186                         mutex_unlock(&us->dev_mutex);
 187                         break;
 188                 }*/
 189
 190                 /* lock access to the state */
 191                 scsi_lock(host);
 192
 193                 /* When we are called with no command pending, we're done */
 194                 if (us->srb == NULL)
 195                 {
 196                         scsi_unlock(host);
 197                         mutex_unlock(&us->dev_mutex);
 198                         //US_DEBUGP("-- exiting\n");
 199                         break;
 200                 }
 201
 202                 /* has the command timed out *already* ? */
 203                 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags))
 204                 {
 205                         us->srb->result = DID_ABORT << 16;
 206                         goto SkipForAbort;
 207                 }
 208
 209                 scsi_unlock(host);
 210
 211                 if (us->srb->sc_data_direction == DMA_BIDIRECTIONAL)
 212                 {
 213                         us->srb->result = DID_ERROR << 16;
 214                 }
 215                 else if (us->srb->device->id && !(us->fflags & US_FL_SCM_MULT_TARG))
 216                 {
 217                         us->srb->result = DID_BAD_TARGET << 16;
 218                 }
 219                 else if (us->srb->device->lun > us->max_lun)
 220                 {
 221                         us->srb->result = DID_BAD_TARGET << 16;
 222                 }
 223                 else if ((us->srb->cmnd[0] == INQUIRY) && (us->fflags & US_FL_FIX_INQUIRY))
 224                 {
 225                         unsigned char data_ptr[36] = {0x00, 0x80, 0x02, 0x02, 0x1F, 0x00, 0x00, 0x00};
 226
 227                         fill_inquiry_response(us, data_ptr, 36);
 228                         us->srb->result = SAM_STAT_GOOD;
 229                 }
 230                 else
 231                 {
 232                         us->proto_handler(us->srb, us);
 233                 }
 234
 235                 /* lock access to the state */
 236                 scsi_lock(host);
 237
 238                 /* indicate that the command is done */
 239                 if (us->srb->result != DID_ABORT << 16)
 240                 {
 241                         us->srb->scsi_done(us->srb);
 242                 }
 243                 else
 244                 {
 245 SkipForAbort:
 246                         printk("scsi command aborted\n");
 247                 }
 248
 249                 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags))
 250                 {
 251                         complete(&(us->notify));
 252
 253                         /* Allow USB transfers to resume */
 254                         clear_bit(US_FLIDX_ABORTING, &us->dflags);
 255                         clear_bit(US_FLIDX_TIMED_OUT, &us->dflags);
 256                 }
 257
 258                 /* finished working on this command */
 259                 us->srb = NULL;
 260                 scsi_unlock(host);
 261
 262                 /* unlock the device pointers */
 263                 mutex_unlock(&us->dev_mutex);
 264         } /* for (;;) */
 265
 266         /* Wait until we are told to stop */
 267         for (;;)
 268         {
 269                 set_current_state(TASK_INTERRUPTIBLE);
 270                 if (kthread_should_stop())
 271                         break;
 272                 schedule();
 273         }
 274         __set_current_state(TASK_RUNNING);
 275         return 0;
 276 }
 277
 278 //----- associate_dev() ---------------------
 279 static int associate_dev(struct us_data *us, struct usb_interface *intf)
 280 {
 281       printk("usb --- associate_dev\n");
 282
 283         /* Fill in the device-related fields */
 284         us->pusb_dev = interface_to_usbdev(intf);
 285         us->pusb_intf = intf;
 286         us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
 287
 288         /* Store our private data in the interface */
 289         usb_set_intfdata(intf, us);
 290
 291         /* Allocate the device-related DMA-mapped buffers */
 292         us->cr = usb_alloc_coherent(us->pusb_dev, sizeof(*us->cr), GFP_KERNEL, &us->cr_dma);
 293         if (!us->cr)
 294         {
 295                 printk("usb_ctrlrequest allocation failed\n");
 296                 return -ENOMEM;
 297         }
 298
 299         us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, GFP_KERNEL, &us->iobuf_dma);
 300         if (!us->iobuf)
 301         {
 302                 printk("I/O buffer allocation failed\n");
 303                 return -ENOMEM;
 304         }
 305
 306         us->sensebuf = kmalloc(US_SENSE_SIZE, GFP_KERNEL);
 307         if (!us->sensebuf)
 308         {
 309                 printk("Sense buffer allocation failed\n");
 310                 return -ENOMEM;
 311         }
 312         return 0;
 313 }
 314
 315 //----- get_device_info() ---------------------
 316 static int get_device_info(struct us_data *us, const struct usb_device_id *id)
 317 {
 318         struct usb_device *dev = us->pusb_dev;
 319         struct usb_interface_descriptor *idesc = &us->pusb_intf->cur_altsetting->desc;
 320
 321       printk("usb --- get_device_info\n");
 322
 323         us->subclass = idesc->bInterfaceSubClass;
 324         us->protocol = idesc->bInterfaceProtocol;
 325         us->fflags = USB_US_ORIG_FLAGS(id->driver_info);
 326         us->Power_IsResum = false;
 327
 328         if (us->fflags & US_FL_IGNORE_DEVICE)
 329         {
 330                 printk("device ignored\n");
 331                 return -ENODEV;
 332         }
 333
 334         if (dev->speed != USB_SPEED_HIGH)
 335                 us->fflags &= ~US_FL_GO_SLOW;
 336
 337         return 0;
 338 }
 339
 340 //----- get_transport() ---------------------
 341 static int get_transport(struct us_data *us)
 342 {
 343       printk("usb --- get_transport\n");
 344         switch (us->protocol) {
 345         case US_PR_BULK:
 346                 us->transport_name = "Bulk";
 347                 us->transport = usb_stor_Bulk_transport;
 348                 us->transport_reset = usb_stor_Bulk_reset;
 349                 break;
 350
 351         default:
 352                 return -EIO;
 353         }
 354         //printk("Transport: %s\n", us->transport_name);
 355
 356         /* fix for single-lun devices */
 357         if (us->fflags & US_FL_SINGLE_LUN)
 358                 us->max_lun = 0;
 359         return 0;
 360 }
 361
 362 //----- get_protocol() ---------------------
 363 static int get_protocol(struct us_data *us)
 364 {
 365       printk("usb --- get_protocol\n");
 366         printk("us->pusb_dev->descriptor.idVendor = %x\n", us->pusb_dev->descriptor.idVendor);
 367         printk("us->pusb_dev->descriptor.idProduct = %x\n", us->pusb_dev->descriptor.idProduct);
 368         switch (us->subclass) {
 369         case US_SC_SCSI:
 370                 us->protocol_name = "Transparent SCSI";
 371                 if( (us->pusb_dev->descriptor.idVendor == 0x0CF2) && (us->pusb_dev->descriptor.idProduct == 0x6250) )
 372                         us->proto_handler = ENE_stor_invoke_transport;
 373                 else
 374                         us->proto_handler = usb_stor_invoke_transport;
 375                 break;
 376
 377         default:
 378                 return -EIO;
 379         }
 380         //printk("Protocol: %s\n", us->protocol_name);
 381         return 0;
 382 }
 383
 384 //----- get_pipes() ---------------------
 385 static int get_pipes(struct us_data *us)
 386 {
 387         struct usb_host_interface *altsetting = us->pusb_intf->cur_altsetting;
 388         int i;
 389         struct usb_endpoint_descriptor *ep;
 390         struct usb_endpoint_descriptor *ep_in = NULL;
 391         struct usb_endpoint_descriptor *ep_out = NULL;
 392         struct usb_endpoint_descriptor *ep_int = NULL;
 393
 394       printk("usb --- get_pipes\n");
 395
 396         for (i = 0; i < altsetting->desc.bNumEndpoints; i++)
 397         {
 398                 ep = &altsetting->endpoint[i].desc;
 399
 400                 if (usb_endpoint_xfer_bulk(ep))
 401                 {
 402                         if (usb_endpoint_dir_in(ep))
 403                         {
 404                                 if (!ep_in)
 405                                         ep_in = ep;
 406                         }
 407                         else
 408                         {
 409                                 if (!ep_out)
 410                                         ep_out = ep;
 411                         }
 412                 }
 413                 else if (usb_endpoint_is_int_in(ep))
 414                 {
 415                         if (!ep_int)
 416                                 ep_int = ep;
 417                 }
 418         }
 419
 420         if (!ep_in || !ep_out || (us->protocol == US_PR_CBI && !ep_int))
 421         {
 422                 printk("Endpoint sanity check failed! Rejecting dev.\n");
 423                 return -EIO;
 424         }
 425
 426         /* Calculate and store the pipe values */
 427         us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0);
 428         us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0);
 429         us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 430         us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 431         if (ep_int)
 432         {
 433                 us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, ep_int->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 434                 us->ep_bInterval = ep_int->bInterval;
 435         }
 436         return 0;
 437 }
 438
 439 //----- usb_stor_acquire_resources() ---------------------
 440 static int usb_stor_acquire_resources(struct us_data *us)
 441 {
 442         struct task_struct *th;
 443
 444       printk("usb --- usb_stor_acquire_resources\n");
 445         us->current_urb = usb_alloc_urb(0, GFP_KERNEL);
 446         if (!us->current_urb)
 447         {
 448                 printk("URB allocation failed\n");
 449                 return -ENOMEM;
 450         }
 451
 452         /* Start up our control thread */
 453         th = kthread_run(usb_stor_control_thread, us, "eucr-storage");
 454         if (IS_ERR(th))
 455         {
 456                 printk("Unable to start control thread\n");
 457                 return PTR_ERR(th);
 458         }
 459         us->ctl_thread = th;
 460
 461         return 0;
 462 }
 463
 464 //----- usb_stor_release_resources() ---------------------
 465 static void usb_stor_release_resources(struct us_data *us)
 466 {
 467         printk("usb --- usb_stor_release_resources\n");
 468
 469         SM_FreeMem();
 470
 471         complete(&us->cmnd_ready);
 472         if (us->ctl_thread)
 473                 kthread_stop(us->ctl_thread);
 474
 475         /* Call the destructor routine, if it exists */
 476         if (us->extra_destructor)
 477         {
 478                 printk("-- calling extra_destructor()\n");
 479                 us->extra_destructor(us->extra);
 480         }
 481
 482         /* Free the extra data and the URB */
 483         kfree(us->extra);
 484         usb_free_urb(us->current_urb);
 485 }
 486
 487 //----- dissociate_dev() ---------------------
 488 static void dissociate_dev(struct us_data *us)
 489 {
 490       printk("usb --- dissociate_dev\n");
 491
 492         kfree(us->sensebuf);
 493
 494         /* Free the device-related DMA-mapped buffers */
 495         if (us->cr)
 496                 usb_free_coherent(us->pusb_dev, sizeof(*us->cr), us->cr, us->cr_dma);
 497         if (us->iobuf)
 498                 usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma);
 499
 500         /* Remove our private data from the interface */
 501         usb_set_intfdata(us->pusb_intf, NULL);
 502 }
 503
 504 //----- quiesce_and_remove_host() ---------------------
 505 static void quiesce_and_remove_host(struct us_data *us)
 506 {
 507         struct Scsi_Host *host = us_to_host(us);
 508
 509       printk("usb --- quiesce_and_remove_host\n");
 510
 511         /* If the device is really gone, cut short reset delays */
 512         if (us->pusb_dev->state == USB_STATE_NOTATTACHED)
 513                 set_bit(US_FLIDX_DISCONNECTING, &us->dflags);
 514
 515         /* Prevent SCSI-scanning (if it hasn't started yet)
 516          * and wait for the SCSI-scanning thread to stop.
 517          */
 518         set_bit(US_FLIDX_DONT_SCAN, &us->dflags);
 519         wake_up(&us->delay_wait);
 520         wait_for_completion(&us->scanning_done);
 521
 522         /* Removing the host will perform an orderly shutdown: caches
 523          * synchronized, disks spun down, etc.
 524          */
 525         scsi_remove_host(host);
 526
 527         /* Prevent any new commands from being accepted and cut short
 528          * reset delays.
 529          */
 530         scsi_lock(host);
 531         set_bit(US_FLIDX_DISCONNECTING, &us->dflags);
 532         scsi_unlock(host);
 533         wake_up(&us->delay_wait);
 534 }
 535
 536 //----- release_everything() ---------------------
 537 static void release_everything(struct us_data *us)
 538 {
 539       printk("usb --- release_everything\n");
 540
 541         usb_stor_release_resources(us);
 542         dissociate_dev(us);
 543         scsi_host_put(us_to_host(us));
 544 }
 545
 546 //----- usb_stor_scan_thread() ---------------------
 547 static int usb_stor_scan_thread(void * __us)
 548 {
 549         struct us_data *us = (struct us_data *)__us;
 550
 551       printk("usb --- usb_stor_scan_thread\n");
 552         printk("EUCR : device found at %d\n", us->pusb_dev->devnum);
 553
 554 // Have we to add this code ?
 555 //      set_freezable();
 556 //      /* Wait for the timeout to expire or for a disconnect */
 557 //      if (delay_use > 0)
 558 //      {
 559 //              wait_event_freezable_timeout(us->delay_wait,
 560 //                              test_bit(US_FLIDX_DONT_SCAN, &us->dflags),
 561 //                              delay_use * HZ);
 562 //      }
 563
 564         /* If the device is still connected, perform the scanning */
 565         if (!test_bit(US_FLIDX_DONT_SCAN, &us->dflags))
 566         {
 567                 /* For bulk-only devices, determine the max LUN value */
 568                 if (us->protocol == US_PR_BULK && !(us->fflags & US_FL_SINGLE_LUN))
 569                 {
 570                         mutex_lock(&us->dev_mutex);
 571                         us->max_lun = usb_stor_Bulk_max_lun(us);
 572                         mutex_unlock(&us->dev_mutex);
 573                 }
 574                 scsi_scan_host(us_to_host(us));
 575                 printk("EUCR : device scan complete\n");
 576         }
 577         complete_and_exit(&us->scanning_done, 0);
 578 }
 579
 580 //----- eucr_probe() ---------------------
 581 static int eucr_probe(struct usb_interface *intf, const struct usb_device_id *id)
 582 {
 583         struct Scsi_Host *host;
 584         struct us_data *us;
 585         int result;
 586         struct task_struct *th;
 587
 588       printk("usb --- eucr_probe\n");
 589
 590       host = scsi_host_alloc(&usb_stor_host_template, sizeof(*us));
 591         if (!host)
 592         {
 593                 printk("Unable to allocate the scsi host\n");
 594                 return -ENOMEM;
 595         }
 596
 597         /* Allow 16-byte CDBs and thus > 2TB */
 598         host->max_cmd_len = 16;
 599         us = host_to_us(host);
 600         memset(us, 0, sizeof(struct us_data));
 601         mutex_init(&(us->dev_mutex));
 602         init_completion(&us->cmnd_ready);
 603         init_completion(&(us->notify));
 604         init_waitqueue_head(&us->delay_wait);
 605         init_completion(&us->scanning_done);
 606
 607         /* Associate the us_data structure with the USB device */
 608         result = associate_dev(us, intf);
 609         if (result)
 610                 goto BadDevice;
 611
 612         /* Get Device info */
 613         result = get_device_info(us, id);
 614         if (result)
 615                 goto BadDevice;
 616
 617         /* Get the transport, protocol, and pipe settings */
 618         result = get_transport(us);
 619         if (result)
 620                 goto BadDevice;
 621         result = get_protocol(us);
 622         if (result)
 623                 goto BadDevice;
 624         result = get_pipes(us);
 625         if (result)
 626                 goto BadDevice;
 627
 628         /* Acquire all the other resources and add the host */
 629         result = usb_stor_acquire_resources(us);
 630         if (result)
 631                 goto BadDevice;
 632
 633         result = scsi_add_host(host, &intf->dev);
 634         if (result)
 635         {
 636                 printk("Unable to add the scsi host\n");
 637                 goto BadDevice;
 638         }
 639
 640         /* Start up the thread for delayed SCSI-device scanning */
 641         th = kthread_create(usb_stor_scan_thread, us, "eucr-stor-scan");
 642         if (IS_ERR(th))
 643         {
 644                 printk("Unable to start the device-scanning thread\n");
 645                 complete(&us->scanning_done);
 646                 quiesce_and_remove_host(us);
 647                 result = PTR_ERR(th);
 648                 goto BadDevice;
 649         }
 650         wake_up_process(th);
 651         return 0;
 652
 653         /* We come here if there are any problems */
 654 BadDevice:
 655       printk("usb --- eucr_probe failed\n");
 656         release_everything(us);
 657         return result;
 658 }
 659
 660 //----- eucr_disconnect() ---------------------
 661 static void eucr_disconnect(struct usb_interface *intf)
 662 {
 663         struct us_data *us = usb_get_intfdata(intf);
 664
 665       printk("usb --- eucr_disconnect\n");
 666         quiesce_and_remove_host(us);
 667         release_everything(us);
 668 }
 669
 670 /***********************************************************************
 671  * Initialization and registration
 672  ***********************************************************************/
 673
 674 //----- usb_storage_driver() ---------------------
 675 static struct usb_driver usb_storage_driver = {
 676         .name =         "eucr",
 677         .probe =                eucr_probe,
 678         .suspend =          eucr_suspend,
 679         .resume =           eucr_resume,
 680         .reset_resume = eucr_reset_resume,
 681         .disconnect =   eucr_disconnect,
 682         .pre_reset =    eucr_pre_reset,
 683         .post_reset =   eucr_post_reset,
 684         .id_table =             eucr_usb_ids,
 685         .soft_unbind =  1,
 686 };
 687
 688 //----- usb_stor_init() ---------------------
 689 static int __init usb_stor_init(void)
 690 {
 691         int retval;
 692       printk("usb --- usb_stor_init start\n");
 693
 694         retval = usb_register(&usb_storage_driver);
 695         if (retval == 0)
 696             printk("ENE USB Mass Storage support registered.\n");
 697
 698         return retval;
 699 }
 700
 701 //----- usb_stor_exit() ---------------------
 702 static void __exit usb_stor_exit(void)
 703 {
 704       printk("usb --- usb_stor_exit\n");
 705
 706         usb_deregister(&usb_storage_driver) ;
 707 }
 708
 709 module_init(usb_stor_init);
 710 module_exit(usb_stor_exit);