1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122#include <linux/module.h>
123#include <linux/kernel.h>
124#include <linux/signal.h>
125#include <linux/errno.h>
126#include <linux/random.h>
127#include <linux/poll.h>
128#include <linux/init.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 <asm/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
142
143
144#define DRIVER_VERSION "v0.4.3"
145#define DRIVER_AUTHOR "John Fremlin <vii@penguinpowered.com>, Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>"
146#define DRIVER_DESC "Microtek Scanmaker X6 USB scanner driver"
147
148
149
150
151
152
153
154static int mts_usb_probe(struct usb_interface *intf,
155 const struct usb_device_id *id);
156static void mts_usb_disconnect(struct usb_interface *intf);
157
158static struct usb_device_id mts_usb_ids [];
159
160static struct usb_driver mts_usb_driver = {
161 .name = "microtekX6",
162 .probe = mts_usb_probe,
163 .disconnect = mts_usb_disconnect,
164 .id_table = mts_usb_ids,
165};
166
167
168
169
170#define MTS_VERSION "0.4.3"
171#define MTS_NAME "microtek usb (rev " MTS_VERSION "): "
172
173#define MTS_WARNING(x...) \
174 printk( KERN_WARNING MTS_NAME x )
175#define MTS_ERROR(x...) \
176 printk( KERN_ERR MTS_NAME x )
177#define MTS_INT_ERROR(x...) \
178 MTS_ERROR(x)
179#define MTS_MESSAGE(x...) \
180 printk( KERN_INFO MTS_NAME x )
181
182#if defined MTS_DO_DEBUG
183
184#define MTS_DEBUG(x...) \
185 printk( KERN_DEBUG MTS_NAME x )
186
187#define MTS_DEBUG_GOT_HERE() \
188 MTS_DEBUG("got to %s:%d (%s)\n", __FILE__, (int)__LINE__, __func__ )
189#define MTS_DEBUG_INT() \
190 do { MTS_DEBUG_GOT_HERE(); \
191 MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \
192 MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",transfer->status,(int)context->data_length, (int)transfer->actual_length ); \
193 mts_debug_dump(context->instance);\
194 } while(0)
195#else
196
197#define MTS_NUL_STATEMENT do { } while(0)
198
199#define MTS_DEBUG(x...) MTS_NUL_STATEMENT
200#define MTS_DEBUG_GOT_HERE() MTS_NUL_STATEMENT
201#define MTS_DEBUG_INT() MTS_NUL_STATEMENT
202
203#endif
204
205
206
207#define MTS_INT_INIT()\
208 struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \
209 MTS_DEBUG_INT();\
210
211#ifdef MTS_DO_DEBUG
212
213static inline void mts_debug_dump(struct mts_desc* desc) {
214 MTS_DEBUG("desc at 0x%x: toggle = %02x%02x\n",
215 (int)desc,
216 (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0]
217 );
218 MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%x\n",
219 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
220 usb_rcvbulkpipe(desc->usb_dev,desc->ep_response),
221 usb_rcvbulkpipe(desc->usb_dev,desc->ep_image)
222 );
223}
224
225
226static inline void mts_show_command(struct scsi_cmnd *srb)
227{
228 char *what = NULL;
229
230 switch (srb->cmnd[0]) {
231 case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break;
232 case REZERO_UNIT: what = "REZERO_UNIT"; break;
233 case REQUEST_SENSE: what = "REQUEST_SENSE"; break;
234 case FORMAT_UNIT: what = "FORMAT_UNIT"; break;
235 case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break;
236 case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break;
237 case READ_6: what = "READ_6"; break;
238 case WRITE_6: what = "WRITE_6"; break;
239 case SEEK_6: what = "SEEK_6"; break;
240 case READ_REVERSE: what = "READ_REVERSE"; break;
241 case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break;
242 case SPACE: what = "SPACE"; break;
243 case INQUIRY: what = "INQUIRY"; break;
244 case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break;
245 case MODE_SELECT: what = "MODE_SELECT"; break;
246 case RESERVE: what = "RESERVE"; break;
247 case RELEASE: what = "RELEASE"; break;
248 case COPY: what = "COPY"; break;
249 case ERASE: what = "ERASE"; break;
250 case MODE_SENSE: what = "MODE_SENSE"; break;
251 case START_STOP: what = "START_STOP"; break;
252 case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break;
253 case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break;
254 case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break;
255 case SET_WINDOW: what = "SET_WINDOW"; break;
256 case READ_CAPACITY: what = "READ_CAPACITY"; break;
257 case READ_10: what = "READ_10"; break;
258 case WRITE_10: what = "WRITE_10"; break;
259 case SEEK_10: what = "SEEK_10"; break;
260 case WRITE_VERIFY: what = "WRITE_VERIFY"; break;
261 case VERIFY: what = "VERIFY"; break;
262 case SEARCH_HIGH: what = "SEARCH_HIGH"; break;
263 case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break;
264 case SEARCH_LOW: what = "SEARCH_LOW"; break;
265 case SET_LIMITS: what = "SET_LIMITS"; break;
266 case READ_POSITION: what = "READ_POSITION"; break;
267 case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break;
268 case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break;
269 case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break;
270 case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break;
271 case COMPARE: what = "COMPARE"; break;
272 case COPY_VERIFY: what = "COPY_VERIFY"; break;
273 case WRITE_BUFFER: what = "WRITE_BUFFER"; break;
274 case READ_BUFFER: what = "READ_BUFFER"; break;
275 case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break;
276 case READ_LONG: what = "READ_LONG"; break;
277 case WRITE_LONG: what = "WRITE_LONG"; break;
278 case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break;
279 case WRITE_SAME: what = "WRITE_SAME"; break;
280 case READ_TOC: what = "READ_TOC"; break;
281 case LOG_SELECT: what = "LOG_SELECT"; break;
282 case LOG_SENSE: what = "LOG_SENSE"; break;
283 case MODE_SELECT_10: what = "MODE_SELECT_10"; break;
284 case MODE_SENSE_10: what = "MODE_SENSE_10"; break;
285 case MOVE_MEDIUM: what = "MOVE_MEDIUM"; break;
286 case READ_12: what = "READ_12"; break;
287 case WRITE_12: what = "WRITE_12"; break;
288 case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break;
289 case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break;
290 case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break;
291 case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break;
292 case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break;
293 case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break;
294 case WRITE_LONG_2: what = "WRITE_LONG_2"; break;
295 default:
296 MTS_DEBUG("can't decode command\n");
297 goto out;
298 break;
299 }
300 MTS_DEBUG( "Command %s (%d bytes)\n", what, srb->cmd_len);
301
302 out:
303 MTS_DEBUG( " %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
304 srb->cmnd[0], srb->cmnd[1], srb->cmnd[2], srb->cmnd[3], srb->cmnd[4], srb->cmnd[5],
305 srb->cmnd[6], srb->cmnd[7], srb->cmnd[8], srb->cmnd[9]);
306}
307
308#else
309
310static inline void mts_show_command(struct scsi_cmnd * dummy)
311{
312}
313
314static inline void mts_debug_dump(struct mts_desc* dummy)
315{
316}
317
318#endif
319
320static inline void mts_urb_abort(struct mts_desc* desc) {
321 MTS_DEBUG_GOT_HERE();
322 mts_debug_dump(desc);
323
324 usb_kill_urb( desc->urb );
325}
326
327static int mts_slave_alloc (struct scsi_device *s)
328{
329 s->inquiry_len = 0x24;
330 return 0;
331}
332
333static int mts_slave_configure (struct scsi_device *s)
334{
335 blk_queue_dma_alignment(s->request_queue, (512 - 1));
336 return 0;
337}
338
339static int mts_scsi_abort(struct scsi_cmnd *srb)
340{
341 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
342
343 MTS_DEBUG_GOT_HERE();
344
345 mts_urb_abort(desc);
346
347 return FAILED;
348}
349
350static int mts_scsi_host_reset(struct scsi_cmnd *srb)
351{
352 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
353 int result;
354
355 MTS_DEBUG_GOT_HERE();
356 mts_debug_dump(desc);
357
358 result = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf);
359 if (result == 0) {
360 result = usb_reset_device(desc->usb_dev);
361 usb_unlock_device(desc->usb_dev);
362 }
363 return result ? FAILED : SUCCESS;
364}
365
366static int
367mts_scsi_queuecommand(struct scsi_cmnd *srb, mts_scsi_cmnd_callback callback);
368
369static void mts_transfer_cleanup( struct urb *transfer );
370static void mts_do_sg(struct urb * transfer);
371
372static inline
373void mts_int_submit_urb (struct urb* transfer,
374 int pipe,
375 void* data,
376 unsigned length,
377 usb_complete_t callback )
378
379
380
381{
382 int res;
383
384 MTS_INT_INIT();
385
386 usb_fill_bulk_urb(transfer,
387 context->instance->usb_dev,
388 pipe,
389 data,
390 length,
391 callback,
392 context
393 );
394
395 res = usb_submit_urb( transfer, GFP_ATOMIC );
396 if ( unlikely(res) ) {
397 MTS_INT_ERROR( "could not submit URB! Error was %d\n",(int)res );
398 context->srb->result = DID_ERROR << 16;
399 mts_transfer_cleanup(transfer);
400 }
401 return;
402}
403
404
405static void mts_transfer_cleanup( struct urb *transfer )
406
407{
408 MTS_INT_INIT();
409
410 if ( likely(context->final_callback != NULL) )
411 context->final_callback(context->srb);
412
413}
414
415static void mts_transfer_done( struct urb *transfer )
416{
417 MTS_INT_INIT();
418
419 context->srb->result &= MTS_SCSI_ERR_MASK;
420 context->srb->result |= (unsigned)(*context->scsi_status)<<1;
421
422 mts_transfer_cleanup(transfer);
423
424 return;
425}
426
427
428static void mts_get_status( struct urb *transfer )
429
430{
431 MTS_INT_INIT();
432
433 mts_int_submit_urb(transfer,
434 usb_rcvbulkpipe(context->instance->usb_dev,
435 context->instance->ep_response),
436 context->scsi_status,
437 1,
438 mts_transfer_done );
439}
440
441static void mts_data_done( struct urb* transfer )
442
443{
444 int status = transfer->status;
445 MTS_INT_INIT();
446
447 if ( context->data_length != transfer->actual_length ) {
448 scsi_set_resid(context->srb, context->data_length -
449 transfer->actual_length);
450 } else if ( unlikely(status) ) {
451 context->srb->result = (status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
452 }
453
454 mts_get_status(transfer);
455
456 return;
457}
458
459
460static void mts_command_done( struct urb *transfer )
461
462{
463 int status = transfer->status;
464 MTS_INT_INIT();
465
466 if ( unlikely(status) ) {
467 if (status == -ENOENT) {
468
469 MTS_DEBUG_GOT_HERE();
470 context->srb->result = DID_ABORT<<16;
471 } else {
472
473 MTS_DEBUG_GOT_HERE();
474
475 context->srb->result = DID_ERROR<<16;
476 }
477 mts_transfer_cleanup(transfer);
478
479 return;
480 }
481
482 if (context->srb->cmnd[0] == REQUEST_SENSE) {
483 mts_int_submit_urb(transfer,
484 context->data_pipe,
485 context->srb->sense_buffer,
486 context->data_length,
487 mts_data_done);
488 } else { if ( context->data ) {
489 mts_int_submit_urb(transfer,
490 context->data_pipe,
491 context->data,
492 context->data_length,
493 scsi_sg_count(context->srb) > 1 ?
494 mts_do_sg : mts_data_done);
495 } else {
496 mts_get_status(transfer);
497 }
498 }
499
500 return;
501}
502
503static void mts_do_sg (struct urb* transfer)
504{
505 struct scatterlist * sg;
506 int status = transfer->status;
507 MTS_INT_INIT();
508
509 MTS_DEBUG("Processing fragment %d of %d\n", context->fragment,
510 scsi_sg_count(context->srb));
511
512 if (unlikely(status)) {
513 context->srb->result = (status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
514 mts_transfer_cleanup(transfer);
515 }
516
517 sg = scsi_sglist(context->srb);
518 context->fragment++;
519 mts_int_submit_urb(transfer,
520 context->data_pipe,
521 sg_virt(&sg[context->fragment]),
522 sg[context->fragment].length,
523 context->fragment + 1 == scsi_sg_count(context->srb) ?
524 mts_data_done : mts_do_sg);
525 return;
526}
527
528static const u8 mts_read_image_sig[] = { 0x28, 00, 00, 00 };
529static const u8 mts_read_image_sig_len = 4;
530static const unsigned char mts_direction[256/8] = {
531 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
532 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
533 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
534 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
535};
536
537
538#define MTS_DIRECTION_IS_IN(x) ((mts_direction[x>>3] >> (x & 7)) & 1)
539
540static void
541mts_build_transfer_context(struct scsi_cmnd *srb, struct mts_desc* desc)
542{
543 int pipe;
544 struct scatterlist * sg;
545
546 MTS_DEBUG_GOT_HERE();
547
548 desc->context.instance = desc;
549 desc->context.srb = srb;
550 desc->context.fragment = 0;
551
552 if (!scsi_bufflen(srb)) {
553 desc->context.data = NULL;
554 desc->context.data_length = 0;
555 return;
556 } else {
557 sg = scsi_sglist(srb);
558 desc->context.data = sg_virt(&sg[0]);
559 desc->context.data_length = sg[0].length;
560 }
561
562
563
564
565
566
567 if ( !memcmp( srb->cmnd, mts_read_image_sig, mts_read_image_sig_len )
568) { pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_image);
569 MTS_DEBUG( "transfering from desc->ep_image == %d\n",
570 (int)desc->ep_image );
571 } else if ( MTS_DIRECTION_IS_IN(srb->cmnd[0]) ) {
572 pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_response);
573 MTS_DEBUG( "transfering from desc->ep_response == %d\n",
574 (int)desc->ep_response);
575 } else {
576 MTS_DEBUG("transfering to desc->ep_out == %d\n",
577 (int)desc->ep_out);
578 pipe = usb_sndbulkpipe(desc->usb_dev,desc->ep_out);
579 }
580 desc->context.data_pipe = pipe;
581}
582
583
584static int
585mts_scsi_queuecommand(struct scsi_cmnd *srb, mts_scsi_cmnd_callback callback)
586{
587 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
588 int err = 0;
589 int res;
590
591 MTS_DEBUG_GOT_HERE();
592 mts_show_command(srb);
593 mts_debug_dump(desc);
594
595 if ( srb->device->lun || srb->device->id || srb->device->channel ) {
596
597 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 );
598
599 MTS_DEBUG("this device doesn't exist\n");
600
601 srb->result = DID_BAD_TARGET << 16;
602
603 if(likely(callback != NULL))
604 callback(srb);
605
606 goto out;
607 }
608
609
610 usb_fill_bulk_urb(desc->urb,
611 desc->usb_dev,
612 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
613 srb->cmnd,
614 srb->cmd_len,
615 mts_command_done,
616 &desc->context
617 );
618
619
620 mts_build_transfer_context( srb, desc );
621 desc->context.final_callback = callback;
622
623
624 res=usb_submit_urb(desc->urb, GFP_ATOMIC);
625
626 if(unlikely(res)){
627 MTS_ERROR("error %d submitting URB\n",(int)res);
628 srb->result = DID_ERROR << 16;
629
630 if(likely(callback != NULL))
631 callback(srb);
632
633 }
634out:
635 return err;
636}
637
638static struct scsi_host_template mts_scsi_host_template = {
639 .module = THIS_MODULE,
640 .name = "microtekX6",
641 .proc_name = "microtekX6",
642 .queuecommand = mts_scsi_queuecommand,
643 .eh_abort_handler = mts_scsi_abort,
644 .eh_host_reset_handler = mts_scsi_host_reset,
645 .sg_tablesize = SG_ALL,
646 .can_queue = 1,
647 .this_id = -1,
648 .cmd_per_lun = 1,
649 .use_clustering = 1,
650 .emulated = 1,
651 .slave_alloc = mts_slave_alloc,
652 .slave_configure = mts_slave_configure,
653 .max_sectors= 256,
654};
655
656
657
658
659static struct usb_device_id mts_usb_ids [] =
660{
661 { USB_DEVICE(0x4ce, 0x0300) },
662 { USB_DEVICE(0x5da, 0x0094) },
663 { USB_DEVICE(0x5da, 0x0099) },
664 { USB_DEVICE(0x5da, 0x009a) },
665 { USB_DEVICE(0x5da, 0x00a0) },
666 { USB_DEVICE(0x5da, 0x00a3) },
667 { USB_DEVICE(0x5da, 0x80a3) },
668 { USB_DEVICE(0x5da, 0x80ac) },
669 { USB_DEVICE(0x5da, 0x00b6) },
670 { }
671};
672
673MODULE_DEVICE_TABLE (usb, mts_usb_ids);
674
675
676static int mts_usb_probe(struct usb_interface *intf,
677 const struct usb_device_id *id)
678{
679 int i;
680 int ep_out = -1;
681 int ep_in_set[3];
682
683 int *ep_in_current = ep_in_set;
684 int err_retval = -ENOMEM;
685
686 struct mts_desc * new_desc;
687 struct usb_device *dev = interface_to_usbdev (intf);
688
689
690 struct usb_host_interface *altsetting;
691
692 MTS_DEBUG_GOT_HERE();
693 MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );
694
695 MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
696 le16_to_cpu(dev->descriptor.idProduct),
697 le16_to_cpu(dev->descriptor.idVendor) );
698
699 MTS_DEBUG_GOT_HERE();
700
701
702 altsetting = intf->cur_altsetting;
703
704
705
706
707 if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) {
708 MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
709 (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints );
710 return -ENODEV;
711 }
712
713 for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) {
714 if ((altsetting->endpoint[i].desc.bmAttributes &
715 USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
716
717 MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
718 (int)altsetting->endpoint[i].desc.bEndpointAddress );
719 } else {
720 if (altsetting->endpoint[i].desc.bEndpointAddress &
721 USB_DIR_IN)
722 *ep_in_current++
723 = altsetting->endpoint[i].desc.bEndpointAddress &
724 USB_ENDPOINT_NUMBER_MASK;
725 else {
726 if ( ep_out != -1 ) {
727 MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
728 return -ENODEV;
729 }
730
731 ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
732 USB_ENDPOINT_NUMBER_MASK;
733 }
734 }
735
736 }
737
738
739 if ( ep_out == -1 ) {
740 MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
741 return -ENODEV;
742 }
743
744
745 new_desc = kzalloc(sizeof(struct mts_desc), GFP_KERNEL);
746 if (!new_desc)
747 goto out;
748
749 new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
750 if (!new_desc->urb)
751 goto out_kfree;
752
753 new_desc->context.scsi_status = kmalloc(1, GFP_KERNEL);
754 if (!new_desc->context.scsi_status)
755 goto out_free_urb;
756
757 new_desc->usb_dev = dev;
758 new_desc->usb_intf = intf;
759
760
761 new_desc->ep_out = ep_out;
762 new_desc->ep_response = ep_in_set[0];
763 new_desc->ep_image = ep_in_set[1];
764
765 if ( new_desc->ep_out != MTS_EP_OUT )
766 MTS_WARNING( "will this work? Command EP is not usually %d\n",
767 (int)new_desc->ep_out );
768
769 if ( new_desc->ep_response != MTS_EP_RESPONSE )
770 MTS_WARNING( "will this work? Response EP is not usually %d\n",
771 (int)new_desc->ep_response );
772
773 if ( new_desc->ep_image != MTS_EP_IMAGE )
774 MTS_WARNING( "will this work? Image data EP is not usually %d\n",
775 (int)new_desc->ep_image );
776
777 new_desc->host = scsi_host_alloc(&mts_scsi_host_template,
778 sizeof(new_desc));
779 if (!new_desc->host)
780 goto out_kfree2;
781
782 new_desc->host->hostdata[0] = (unsigned long)new_desc;
783 if (scsi_add_host(new_desc->host, &dev->dev)) {
784 err_retval = -EIO;
785 goto out_host_put;
786 }
787 scsi_scan_host(new_desc->host);
788
789 usb_set_intfdata(intf, new_desc);
790 return 0;
791
792 out_host_put:
793 scsi_host_put(new_desc->host);
794 out_kfree2:
795 kfree(new_desc->context.scsi_status);
796 out_free_urb:
797 usb_free_urb(new_desc->urb);
798 out_kfree:
799 kfree(new_desc);
800 out:
801 return err_retval;
802}
803
804static void mts_usb_disconnect (struct usb_interface *intf)
805{
806 struct mts_desc *desc = usb_get_intfdata(intf);
807
808 usb_set_intfdata(intf, NULL);
809
810 usb_kill_urb(desc->urb);
811 scsi_remove_host(desc->host);
812
813 scsi_host_put(desc->host);
814 usb_free_urb(desc->urb);
815 kfree(desc->context.scsi_status);
816 kfree(desc);
817}
818
819
820static int __init microtek_drv_init(void)
821{
822 return usb_register(&mts_usb_driver);
823}
824
825static void __exit microtek_drv_exit(void)
826{
827 usb_deregister(&mts_usb_driver);
828}
829
830module_init(microtek_drv_init);
831module_exit(microtek_drv_exit);
832
833MODULE_AUTHOR( DRIVER_AUTHOR );
834MODULE_DESCRIPTION( DRIVER_DESC );
835MODULE_LICENSE("GPL");
836