This source file includes following definitions.
- mts_debug_dump
- mts_show_command
- mts_show_command
- mts_debug_dump
- mts_urb_abort
- mts_slave_alloc
- mts_slave_configure
- mts_scsi_abort
- mts_scsi_host_reset
- mts_int_submit_urb
- mts_transfer_cleanup
- mts_transfer_done
- mts_get_status
- mts_data_done
- mts_command_done
- mts_do_sg
- mts_build_transfer_context
- mts_scsi_queuecommand_lck
- mts_usb_probe
- mts_usb_disconnect
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123 #include <linux/module.h>
124 #include <linux/kernel.h>
125 #include <linux/signal.h>
126 #include <linux/errno.h>
127 #include <linux/random.h>
128 #include <linux/poll.h>
129 #include <linux/slab.h>
130 #include <linux/spinlock.h>
131 #include <linux/usb.h>
132 #include <linux/proc_fs.h>
133
134 #include <linux/atomic.h>
135 #include <linux/blkdev.h>
136 #include "../../scsi/scsi.h"
137 #include <scsi/scsi_host.h>
138
139 #include "microtek.h"
140
141 #define DRIVER_AUTHOR "John Fremlin <vii@penguinpowered.com>, Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>"
142 #define DRIVER_DESC "Microtek Scanmaker X6 USB scanner driver"
143
144
145
146
147
148
149
150 static int mts_usb_probe(struct usb_interface *intf,
151 const struct usb_device_id *id);
152 static void mts_usb_disconnect(struct usb_interface *intf);
153
154 static const struct usb_device_id mts_usb_ids[];
155
156 static struct usb_driver mts_usb_driver = {
157 .name = "microtekX6",
158 .probe = mts_usb_probe,
159 .disconnect = mts_usb_disconnect,
160 .id_table = mts_usb_ids,
161 };
162
163
164
165
166 #define MTS_VERSION "0.4.3"
167 #define MTS_NAME "microtek usb (rev " MTS_VERSION "): "
168
169 #define MTS_WARNING(x...) \
170 printk( KERN_WARNING MTS_NAME x )
171 #define MTS_ERROR(x...) \
172 printk( KERN_ERR MTS_NAME x )
173 #define MTS_INT_ERROR(x...) \
174 MTS_ERROR(x)
175 #define MTS_MESSAGE(x...) \
176 printk( KERN_INFO MTS_NAME x )
177
178 #if defined MTS_DO_DEBUG
179
180 #define MTS_DEBUG(x...) \
181 printk( KERN_DEBUG MTS_NAME x )
182
183 #define MTS_DEBUG_GOT_HERE() \
184 MTS_DEBUG("got to %s:%d (%s)\n", __FILE__, (int)__LINE__, __func__ )
185 #define MTS_DEBUG_INT() \
186 do { MTS_DEBUG_GOT_HERE(); \
187 MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \
188 MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",transfer->status,(int)context->data_length, (int)transfer->actual_length ); \
189 mts_debug_dump(context->instance);\
190 } while(0)
191 #else
192
193 #define MTS_NUL_STATEMENT do { } while(0)
194
195 #define MTS_DEBUG(x...) MTS_NUL_STATEMENT
196 #define MTS_DEBUG_GOT_HERE() MTS_NUL_STATEMENT
197 #define MTS_DEBUG_INT() MTS_NUL_STATEMENT
198
199 #endif
200
201
202
203 #define MTS_INT_INIT()\
204 struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \
205 MTS_DEBUG_INT();\
206
207 #ifdef MTS_DO_DEBUG
208
209 static inline void mts_debug_dump(struct mts_desc* desc) {
210 MTS_DEBUG("desc at 0x%x: toggle = %02x%02x\n",
211 (int)desc,
212 (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0]
213 );
214 MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%x\n",
215 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
216 usb_rcvbulkpipe(desc->usb_dev,desc->ep_response),
217 usb_rcvbulkpipe(desc->usb_dev,desc->ep_image)
218 );
219 }
220
221
222 static inline void mts_show_command(struct scsi_cmnd *srb)
223 {
224 char *what = NULL;
225
226 switch (srb->cmnd[0]) {
227 case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break;
228 case REZERO_UNIT: what = "REZERO_UNIT"; break;
229 case REQUEST_SENSE: what = "REQUEST_SENSE"; break;
230 case FORMAT_UNIT: what = "FORMAT_UNIT"; break;
231 case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break;
232 case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break;
233 case READ_6: what = "READ_6"; break;
234 case WRITE_6: what = "WRITE_6"; break;
235 case SEEK_6: what = "SEEK_6"; break;
236 case READ_REVERSE: what = "READ_REVERSE"; break;
237 case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break;
238 case SPACE: what = "SPACE"; break;
239 case INQUIRY: what = "INQUIRY"; break;
240 case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break;
241 case MODE_SELECT: what = "MODE_SELECT"; break;
242 case RESERVE: what = "RESERVE"; break;
243 case RELEASE: what = "RELEASE"; break;
244 case COPY: what = "COPY"; break;
245 case ERASE: what = "ERASE"; break;
246 case MODE_SENSE: what = "MODE_SENSE"; break;
247 case START_STOP: what = "START_STOP"; break;
248 case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break;
249 case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break;
250 case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break;
251 case SET_WINDOW: what = "SET_WINDOW"; break;
252 case READ_CAPACITY: what = "READ_CAPACITY"; break;
253 case READ_10: what = "READ_10"; break;
254 case WRITE_10: what = "WRITE_10"; break;
255 case SEEK_10: what = "SEEK_10"; break;
256 case WRITE_VERIFY: what = "WRITE_VERIFY"; break;
257 case VERIFY: what = "VERIFY"; break;
258 case SEARCH_HIGH: what = "SEARCH_HIGH"; break;
259 case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break;
260 case SEARCH_LOW: what = "SEARCH_LOW"; break;
261 case SET_LIMITS: what = "SET_LIMITS"; break;
262 case READ_POSITION: what = "READ_POSITION"; break;
263 case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break;
264 case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break;
265 case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break;
266 case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break;
267 case COMPARE: what = "COMPARE"; break;
268 case COPY_VERIFY: what = "COPY_VERIFY"; break;
269 case WRITE_BUFFER: what = "WRITE_BUFFER"; break;
270 case READ_BUFFER: what = "READ_BUFFER"; break;
271 case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break;
272 case READ_LONG: what = "READ_LONG"; break;
273 case WRITE_LONG: what = "WRITE_LONG"; break;
274 case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break;
275 case WRITE_SAME: what = "WRITE_SAME"; break;
276 case READ_TOC: what = "READ_TOC"; break;
277 case LOG_SELECT: what = "LOG_SELECT"; break;
278 case LOG_SENSE: what = "LOG_SENSE"; break;
279 case MODE_SELECT_10: what = "MODE_SELECT_10"; break;
280 case MODE_SENSE_10: what = "MODE_SENSE_10"; break;
281 case MOVE_MEDIUM: what = "MOVE_MEDIUM"; break;
282 case READ_12: what = "READ_12"; break;
283 case WRITE_12: what = "WRITE_12"; break;
284 case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break;
285 case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break;
286 case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break;
287 case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break;
288 case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break;
289 case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break;
290 case WRITE_LONG_2: what = "WRITE_LONG_2"; break;
291 default:
292 MTS_DEBUG("can't decode command\n");
293 goto out;
294 break;
295 }
296 MTS_DEBUG( "Command %s (%d bytes)\n", what, srb->cmd_len);
297
298 out:
299 MTS_DEBUG( " %10ph\n", srb->cmnd);
300 }
301
302 #else
303
304 static inline void mts_show_command(struct scsi_cmnd * dummy)
305 {
306 }
307
308 static inline void mts_debug_dump(struct mts_desc* dummy)
309 {
310 }
311
312 #endif
313
314 static inline void mts_urb_abort(struct mts_desc* desc) {
315 MTS_DEBUG_GOT_HERE();
316 mts_debug_dump(desc);
317
318 usb_kill_urb( desc->urb );
319 }
320
321 static int mts_slave_alloc (struct scsi_device *s)
322 {
323 s->inquiry_len = 0x24;
324 return 0;
325 }
326
327 static int mts_slave_configure (struct scsi_device *s)
328 {
329 blk_queue_dma_alignment(s->request_queue, (512 - 1));
330 return 0;
331 }
332
333 static int mts_scsi_abort(struct scsi_cmnd *srb)
334 {
335 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
336
337 MTS_DEBUG_GOT_HERE();
338
339 mts_urb_abort(desc);
340
341 return FAILED;
342 }
343
344 static int mts_scsi_host_reset(struct scsi_cmnd *srb)
345 {
346 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
347 int result;
348
349 MTS_DEBUG_GOT_HERE();
350 mts_debug_dump(desc);
351
352 result = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf);
353 if (result == 0) {
354 result = usb_reset_device(desc->usb_dev);
355 usb_unlock_device(desc->usb_dev);
356 }
357 return result ? FAILED : SUCCESS;
358 }
359
360 static int
361 mts_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *srb);
362
363 static void mts_transfer_cleanup( struct urb *transfer );
364 static void mts_do_sg(struct urb * transfer);
365
366 static inline
367 void mts_int_submit_urb (struct urb* transfer,
368 int pipe,
369 void* data,
370 unsigned length,
371 usb_complete_t callback )
372
373
374
375 {
376 int res;
377
378 MTS_INT_INIT();
379
380 usb_fill_bulk_urb(transfer,
381 context->instance->usb_dev,
382 pipe,
383 data,
384 length,
385 callback,
386 context
387 );
388
389 res = usb_submit_urb( transfer, GFP_ATOMIC );
390 if ( unlikely(res) ) {
391 MTS_INT_ERROR( "could not submit URB! Error was %d\n",(int)res );
392 context->srb->result = DID_ERROR << 16;
393 mts_transfer_cleanup(transfer);
394 }
395 }
396
397
398 static void mts_transfer_cleanup( struct urb *transfer )
399
400 {
401 MTS_INT_INIT();
402
403 if ( likely(context->final_callback != NULL) )
404 context->final_callback(context->srb);
405 }
406
407 static void mts_transfer_done( struct urb *transfer )
408 {
409 MTS_INT_INIT();
410
411 context->srb->result &= MTS_SCSI_ERR_MASK;
412 context->srb->result |= (unsigned)(*context->scsi_status)<<1;
413
414 mts_transfer_cleanup(transfer);
415 }
416
417
418 static void mts_get_status( struct urb *transfer )
419
420 {
421 MTS_INT_INIT();
422
423 mts_int_submit_urb(transfer,
424 usb_rcvbulkpipe(context->instance->usb_dev,
425 context->instance->ep_response),
426 context->scsi_status,
427 1,
428 mts_transfer_done );
429 }
430
431 static void mts_data_done( struct urb* transfer )
432
433 {
434 int status = transfer->status;
435 MTS_INT_INIT();
436
437 if ( context->data_length != transfer->actual_length ) {
438 scsi_set_resid(context->srb, context->data_length -
439 transfer->actual_length);
440 } else if ( unlikely(status) ) {
441 context->srb->result = (status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
442 }
443
444 mts_get_status(transfer);
445 }
446
447
448 static void mts_command_done( struct urb *transfer )
449
450 {
451 int status = transfer->status;
452 MTS_INT_INIT();
453
454 if ( unlikely(status) ) {
455 if (status == -ENOENT) {
456
457 MTS_DEBUG_GOT_HERE();
458 context->srb->result = DID_ABORT<<16;
459 } else {
460
461 MTS_DEBUG_GOT_HERE();
462
463 context->srb->result = DID_ERROR<<16;
464 }
465 mts_transfer_cleanup(transfer);
466
467 return;
468 }
469
470 if (context->srb->cmnd[0] == REQUEST_SENSE) {
471 mts_int_submit_urb(transfer,
472 context->data_pipe,
473 context->srb->sense_buffer,
474 context->data_length,
475 mts_data_done);
476 } else { if ( context->data ) {
477 mts_int_submit_urb(transfer,
478 context->data_pipe,
479 context->data,
480 context->data_length,
481 scsi_sg_count(context->srb) > 1 ?
482 mts_do_sg : mts_data_done);
483 } else {
484 mts_get_status(transfer);
485 }
486 }
487 }
488
489 static void mts_do_sg (struct urb* transfer)
490 {
491 int status = transfer->status;
492 MTS_INT_INIT();
493
494 MTS_DEBUG("Processing fragment %d of %d\n", context->fragment,
495 scsi_sg_count(context->srb));
496
497 if (unlikely(status)) {
498 context->srb->result = (status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
499 mts_transfer_cleanup(transfer);
500 }
501
502 context->curr_sg = sg_next(context->curr_sg);
503 mts_int_submit_urb(transfer,
504 context->data_pipe,
505 sg_virt(context->curr_sg),
506 context->curr_sg->length,
507 sg_is_last(context->curr_sg) ?
508 mts_data_done : mts_do_sg);
509 }
510
511 static const u8 mts_read_image_sig[] = { 0x28, 00, 00, 00 };
512 static const u8 mts_read_image_sig_len = 4;
513 static const unsigned char mts_direction[256/8] = {
514 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
515 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
516 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
517 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
518 };
519
520
521 #define MTS_DIRECTION_IS_IN(x) ((mts_direction[x>>3] >> (x & 7)) & 1)
522
523 static void
524 mts_build_transfer_context(struct scsi_cmnd *srb, struct mts_desc* desc)
525 {
526 int pipe;
527
528 MTS_DEBUG_GOT_HERE();
529
530 desc->context.instance = desc;
531 desc->context.srb = srb;
532
533 if (!scsi_bufflen(srb)) {
534 desc->context.data = NULL;
535 desc->context.data_length = 0;
536 return;
537 } else {
538 desc->context.curr_sg = scsi_sglist(srb);
539 desc->context.data = sg_virt(desc->context.curr_sg);
540 desc->context.data_length = desc->context.curr_sg->length;
541 }
542
543
544
545
546
547
548 if ( !memcmp( srb->cmnd, mts_read_image_sig, mts_read_image_sig_len )
549 ) { pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_image);
550 MTS_DEBUG( "transferring from desc->ep_image == %d\n",
551 (int)desc->ep_image );
552 } else if ( MTS_DIRECTION_IS_IN(srb->cmnd[0]) ) {
553 pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_response);
554 MTS_DEBUG( "transferring from desc->ep_response == %d\n",
555 (int)desc->ep_response);
556 } else {
557 MTS_DEBUG("transferring to desc->ep_out == %d\n",
558 (int)desc->ep_out);
559 pipe = usb_sndbulkpipe(desc->usb_dev,desc->ep_out);
560 }
561 desc->context.data_pipe = pipe;
562 }
563
564
565 static int
566 mts_scsi_queuecommand_lck(struct scsi_cmnd *srb, mts_scsi_cmnd_callback callback)
567 {
568 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
569 int err = 0;
570 int res;
571
572 MTS_DEBUG_GOT_HERE();
573 mts_show_command(srb);
574 mts_debug_dump(desc);
575
576 if ( srb->device->lun || srb->device->id || srb->device->channel ) {
577
578 MTS_DEBUG("Command to LUN=%d ID=%d CHANNEL=%d from SCSI layer\n",(int)srb->device->lun,(int)srb->device->id, (int)srb->device->channel );
579
580 MTS_DEBUG("this device doesn't exist\n");
581
582 srb->result = DID_BAD_TARGET << 16;
583
584 if(likely(callback != NULL))
585 callback(srb);
586
587 goto out;
588 }
589
590
591 usb_fill_bulk_urb(desc->urb,
592 desc->usb_dev,
593 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
594 srb->cmnd,
595 srb->cmd_len,
596 mts_command_done,
597 &desc->context
598 );
599
600
601 mts_build_transfer_context( srb, desc );
602 desc->context.final_callback = callback;
603
604
605 res=usb_submit_urb(desc->urb, GFP_ATOMIC);
606
607 if(unlikely(res)){
608 MTS_ERROR("error %d submitting URB\n",(int)res);
609 srb->result = DID_ERROR << 16;
610
611 if(likely(callback != NULL))
612 callback(srb);
613
614 }
615 out:
616 return err;
617 }
618
619 static DEF_SCSI_QCMD(mts_scsi_queuecommand)
620
621 static struct scsi_host_template mts_scsi_host_template = {
622 .module = THIS_MODULE,
623 .name = "microtekX6",
624 .proc_name = "microtekX6",
625 .queuecommand = mts_scsi_queuecommand,
626 .eh_abort_handler = mts_scsi_abort,
627 .eh_host_reset_handler = mts_scsi_host_reset,
628 .sg_tablesize = SG_ALL,
629 .can_queue = 1,
630 .this_id = -1,
631 .emulated = 1,
632 .slave_alloc = mts_slave_alloc,
633 .slave_configure = mts_slave_configure,
634 .max_sectors= 256,
635 };
636
637
638
639
640 static const struct usb_device_id mts_usb_ids[] =
641 {
642 { USB_DEVICE(0x4ce, 0x0300) },
643 { USB_DEVICE(0x5da, 0x0094) },
644 { USB_DEVICE(0x5da, 0x0099) },
645 { USB_DEVICE(0x5da, 0x009a) },
646 { USB_DEVICE(0x5da, 0x00a0) },
647 { USB_DEVICE(0x5da, 0x00a3) },
648 { USB_DEVICE(0x5da, 0x80a3) },
649 { USB_DEVICE(0x5da, 0x80ac) },
650 { USB_DEVICE(0x5da, 0x00b6) },
651 { }
652 };
653
654 MODULE_DEVICE_TABLE (usb, mts_usb_ids);
655
656
657 static int mts_usb_probe(struct usb_interface *intf,
658 const struct usb_device_id *id)
659 {
660 int i;
661 int ep_out = -1;
662 int ep_in_set[3];
663
664 int *ep_in_current = ep_in_set;
665 int err_retval = -ENOMEM;
666
667 struct mts_desc * new_desc;
668 struct usb_device *dev = interface_to_usbdev (intf);
669
670
671 struct usb_host_interface *altsetting;
672
673 MTS_DEBUG_GOT_HERE();
674 MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );
675
676 MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
677 le16_to_cpu(dev->descriptor.idProduct),
678 le16_to_cpu(dev->descriptor.idVendor) );
679
680 MTS_DEBUG_GOT_HERE();
681
682
683 altsetting = intf->cur_altsetting;
684
685
686
687
688 if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) {
689 MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
690 (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints );
691 return -ENODEV;
692 }
693
694 for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) {
695 if ((altsetting->endpoint[i].desc.bmAttributes &
696 USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
697
698 MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
699 (int)altsetting->endpoint[i].desc.bEndpointAddress );
700 } else {
701 if (altsetting->endpoint[i].desc.bEndpointAddress &
702 USB_DIR_IN)
703 *ep_in_current++
704 = altsetting->endpoint[i].desc.bEndpointAddress &
705 USB_ENDPOINT_NUMBER_MASK;
706 else {
707 if ( ep_out != -1 ) {
708 MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
709 return -ENODEV;
710 }
711
712 ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
713 USB_ENDPOINT_NUMBER_MASK;
714 }
715 }
716
717 }
718
719 if (ep_in_current != &ep_in_set[2]) {
720 MTS_WARNING("couldn't find two input bulk endpoints. Bailing out.\n");
721 return -ENODEV;
722 }
723
724 if ( ep_out == -1 ) {
725 MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
726 return -ENODEV;
727 }
728
729
730 new_desc = kzalloc(sizeof(struct mts_desc), GFP_KERNEL);
731 if (!new_desc)
732 goto out;
733
734 new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
735 if (!new_desc->urb)
736 goto out_kfree;
737
738 new_desc->context.scsi_status = kmalloc(1, GFP_KERNEL);
739 if (!new_desc->context.scsi_status)
740 goto out_free_urb;
741
742 new_desc->usb_dev = dev;
743 new_desc->usb_intf = intf;
744
745
746 new_desc->ep_out = ep_out;
747 new_desc->ep_response = ep_in_set[0];
748 new_desc->ep_image = ep_in_set[1];
749
750 if ( new_desc->ep_out != MTS_EP_OUT )
751 MTS_WARNING( "will this work? Command EP is not usually %d\n",
752 (int)new_desc->ep_out );
753
754 if ( new_desc->ep_response != MTS_EP_RESPONSE )
755 MTS_WARNING( "will this work? Response EP is not usually %d\n",
756 (int)new_desc->ep_response );
757
758 if ( new_desc->ep_image != MTS_EP_IMAGE )
759 MTS_WARNING( "will this work? Image data EP is not usually %d\n",
760 (int)new_desc->ep_image );
761
762 new_desc->host = scsi_host_alloc(&mts_scsi_host_template,
763 sizeof(new_desc));
764 if (!new_desc->host)
765 goto out_kfree2;
766
767 new_desc->host->hostdata[0] = (unsigned long)new_desc;
768 if (scsi_add_host(new_desc->host, &dev->dev)) {
769 err_retval = -EIO;
770 goto out_host_put;
771 }
772 scsi_scan_host(new_desc->host);
773
774 usb_set_intfdata(intf, new_desc);
775 return 0;
776
777 out_host_put:
778 scsi_host_put(new_desc->host);
779 out_kfree2:
780 kfree(new_desc->context.scsi_status);
781 out_free_urb:
782 usb_free_urb(new_desc->urb);
783 out_kfree:
784 kfree(new_desc);
785 out:
786 return err_retval;
787 }
788
789 static void mts_usb_disconnect (struct usb_interface *intf)
790 {
791 struct mts_desc *desc = usb_get_intfdata(intf);
792
793 usb_set_intfdata(intf, NULL);
794
795 usb_kill_urb(desc->urb);
796 scsi_remove_host(desc->host);
797
798 scsi_host_put(desc->host);
799 usb_free_urb(desc->urb);
800 kfree(desc->context.scsi_status);
801 kfree(desc);
802 }
803
804 module_usb_driver(mts_usb_driver);
805
806 MODULE_AUTHOR( DRIVER_AUTHOR );
807 MODULE_DESCRIPTION( DRIVER_DESC );
808 MODULE_LICENSE("GPL");