xref: /openbmc/linux/drivers/usb/storage/jumpshot.c (revision 842ed298)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Driver for Lexar "Jumpshot" Compact Flash reader
4  *
5  * jumpshot driver v0.1:
6  *
7  * First release
8  *
9  * Current development and maintenance by:
10  *   (c) 2000 Jimmie Mayfield (mayfield+usb@sackheads.org)
11  *
12  *   Many thanks to Robert Baruch for the SanDisk SmartMedia reader driver
13  *   which I used as a template for this driver.
14  *
15  *   Some bugfixes and scatter-gather code by Gregory P. Smith
16  *   (greg-usb@electricrain.com)
17  *
18  *   Fix for media change by Joerg Schneider (js@joergschneider.com)
19  *
20  * Developed with the assistance of:
21  *
22  *   (C) 2002 Alan Stern <stern@rowland.org>
23  */
24 
25  /*
26   * This driver attempts to support the Lexar Jumpshot USB CompactFlash
27   * reader.  Like many other USB CompactFlash readers, the Jumpshot contains
28   * a USB-to-ATA chip.
29   *
30   * This driver supports reading and writing.  If you're truly paranoid,
31   * however, you can force the driver into a write-protected state by setting
32   * the WP enable bits in jumpshot_handle_mode_sense.  See the comments
33   * in that routine.
34   */
35 
36 #include <linux/errno.h>
37 #include <linux/module.h>
38 #include <linux/slab.h>
39 
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_cmnd.h>
42 
43 #include "usb.h"
44 #include "transport.h"
45 #include "protocol.h"
46 #include "debug.h"
47 #include "scsiglue.h"
48 
49 #define DRV_NAME "ums-jumpshot"
50 
51 MODULE_DESCRIPTION("Driver for Lexar \"Jumpshot\" Compact Flash reader");
52 MODULE_AUTHOR("Jimmie Mayfield <mayfield+usb@sackheads.org>");
53 MODULE_LICENSE("GPL");
54 MODULE_IMPORT_NS(USB_STORAGE);
55 
56 /*
57  * The table of devices
58  */
59 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
60 		    vendorName, productName, useProtocol, useTransport, \
61 		    initFunction, flags) \
62 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
63   .driver_info = (flags) }
64 
65 static struct usb_device_id jumpshot_usb_ids[] = {
66 #	include "unusual_jumpshot.h"
67 	{ }		/* Terminating entry */
68 };
69 MODULE_DEVICE_TABLE(usb, jumpshot_usb_ids);
70 
71 #undef UNUSUAL_DEV
72 
73 /*
74  * The flags table
75  */
76 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
77 		    vendor_name, product_name, use_protocol, use_transport, \
78 		    init_function, Flags) \
79 { \
80 	.vendorName = vendor_name,	\
81 	.productName = product_name,	\
82 	.useProtocol = use_protocol,	\
83 	.useTransport = use_transport,	\
84 	.initFunction = init_function,	\
85 }
86 
87 static struct us_unusual_dev jumpshot_unusual_dev_list[] = {
88 #	include "unusual_jumpshot.h"
89 	{ }		/* Terminating entry */
90 };
91 
92 #undef UNUSUAL_DEV
93 
94 
95 struct jumpshot_info {
96    unsigned long   sectors;     /* total sector count */
97    unsigned long   ssize;       /* sector size in bytes */
98 
99    /* the following aren't used yet */
100    unsigned char   sense_key;
101    unsigned long   sense_asc;   /* additional sense code */
102    unsigned long   sense_ascq;  /* additional sense code qualifier */
103 };
104 
105 static inline int jumpshot_bulk_read(struct us_data *us,
106 				     unsigned char *data,
107 				     unsigned int len)
108 {
109 	if (len == 0)
110 		return USB_STOR_XFER_GOOD;
111 
112 	usb_stor_dbg(us, "len = %d\n", len);
113 	return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
114 			data, len, NULL);
115 }
116 
117 
118 static inline int jumpshot_bulk_write(struct us_data *us,
119 				      unsigned char *data,
120 				      unsigned int len)
121 {
122 	if (len == 0)
123 		return USB_STOR_XFER_GOOD;
124 
125 	usb_stor_dbg(us, "len = %d\n", len);
126 	return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
127 			data, len, NULL);
128 }
129 
130 
131 static int jumpshot_get_status(struct us_data  *us)
132 {
133 	int rc;
134 
135 	if (!us)
136 		return USB_STOR_TRANSPORT_ERROR;
137 
138 	// send the setup
139 	rc = usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe,
140 				   0, 0xA0, 0, 7, us->iobuf, 1);
141 
142 	if (rc != USB_STOR_XFER_GOOD)
143 		return USB_STOR_TRANSPORT_ERROR;
144 
145 	if (us->iobuf[0] != 0x50) {
146 		usb_stor_dbg(us, "0x%2x\n", us->iobuf[0]);
147 		return USB_STOR_TRANSPORT_ERROR;
148 	}
149 
150 	return USB_STOR_TRANSPORT_GOOD;
151 }
152 
153 static int jumpshot_read_data(struct us_data *us,
154 			      struct jumpshot_info *info,
155 			      u32 sector,
156 			      u32 sectors)
157 {
158 	unsigned char *command = us->iobuf;
159 	unsigned char *buffer;
160 	unsigned char  thistime;
161 	unsigned int totallen, alloclen;
162 	int len, result;
163 	unsigned int sg_offset = 0;
164 	struct scatterlist *sg = NULL;
165 
166 	// we're working in LBA mode.  according to the ATA spec,
167 	// we can support up to 28-bit addressing.  I don't know if Jumpshot
168 	// supports beyond 24-bit addressing.  It's kind of hard to test
169 	// since it requires > 8GB CF card.
170 
171 	if (sector > 0x0FFFFFFF)
172 		return USB_STOR_TRANSPORT_ERROR;
173 
174 	totallen = sectors * info->ssize;
175 
176 	// Since we don't read more than 64 KB at a time, we have to create
177 	// a bounce buffer and move the data a piece at a time between the
178 	// bounce buffer and the actual transfer buffer.
179 
180 	alloclen = min(totallen, 65536u);
181 	buffer = kmalloc(alloclen, GFP_NOIO);
182 	if (buffer == NULL)
183 		return USB_STOR_TRANSPORT_ERROR;
184 
185 	do {
186 		// loop, never allocate or transfer more than 64k at once
187 		// (min(128k, 255*info->ssize) is the real limit)
188 		len = min(totallen, alloclen);
189 		thistime = (len / info->ssize) & 0xff;
190 
191 		command[0] = 0;
192 		command[1] = thistime;
193 		command[2] = sector & 0xFF;
194 		command[3] = (sector >>  8) & 0xFF;
195 		command[4] = (sector >> 16) & 0xFF;
196 
197 		command[5] = 0xE0 | ((sector >> 24) & 0x0F);
198 		command[6] = 0x20;
199 
200 		// send the setup + command
201 		result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
202 					       0, 0x20, 0, 1, command, 7);
203 		if (result != USB_STOR_XFER_GOOD)
204 			goto leave;
205 
206 		// read the result
207 		result = jumpshot_bulk_read(us, buffer, len);
208 		if (result != USB_STOR_XFER_GOOD)
209 			goto leave;
210 
211 		usb_stor_dbg(us, "%d bytes\n", len);
212 
213 		// Store the data in the transfer buffer
214 		usb_stor_access_xfer_buf(buffer, len, us->srb,
215 				 &sg, &sg_offset, TO_XFER_BUF);
216 
217 		sector += thistime;
218 		totallen -= len;
219 	} while (totallen > 0);
220 
221 	kfree(buffer);
222 	return USB_STOR_TRANSPORT_GOOD;
223 
224  leave:
225 	kfree(buffer);
226 	return USB_STOR_TRANSPORT_ERROR;
227 }
228 
229 
230 static int jumpshot_write_data(struct us_data *us,
231 			       struct jumpshot_info *info,
232 			       u32 sector,
233 			       u32 sectors)
234 {
235 	unsigned char *command = us->iobuf;
236 	unsigned char *buffer;
237 	unsigned char  thistime;
238 	unsigned int totallen, alloclen;
239 	int len, result, waitcount;
240 	unsigned int sg_offset = 0;
241 	struct scatterlist *sg = NULL;
242 
243 	// we're working in LBA mode.  according to the ATA spec,
244 	// we can support up to 28-bit addressing.  I don't know if Jumpshot
245 	// supports beyond 24-bit addressing.  It's kind of hard to test
246 	// since it requires > 8GB CF card.
247 	//
248 	if (sector > 0x0FFFFFFF)
249 		return USB_STOR_TRANSPORT_ERROR;
250 
251 	totallen = sectors * info->ssize;
252 
253 	// Since we don't write more than 64 KB at a time, we have to create
254 	// a bounce buffer and move the data a piece at a time between the
255 	// bounce buffer and the actual transfer buffer.
256 
257 	alloclen = min(totallen, 65536u);
258 	buffer = kmalloc(alloclen, GFP_NOIO);
259 	if (buffer == NULL)
260 		return USB_STOR_TRANSPORT_ERROR;
261 
262 	do {
263 		// loop, never allocate or transfer more than 64k at once
264 		// (min(128k, 255*info->ssize) is the real limit)
265 
266 		len = min(totallen, alloclen);
267 		thistime = (len / info->ssize) & 0xff;
268 
269 		// Get the data from the transfer buffer
270 		usb_stor_access_xfer_buf(buffer, len, us->srb,
271 				&sg, &sg_offset, FROM_XFER_BUF);
272 
273 		command[0] = 0;
274 		command[1] = thistime;
275 		command[2] = sector & 0xFF;
276 		command[3] = (sector >>  8) & 0xFF;
277 		command[4] = (sector >> 16) & 0xFF;
278 
279 		command[5] = 0xE0 | ((sector >> 24) & 0x0F);
280 		command[6] = 0x30;
281 
282 		// send the setup + command
283 		result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
284 			0, 0x20, 0, 1, command, 7);
285 		if (result != USB_STOR_XFER_GOOD)
286 			goto leave;
287 
288 		// send the data
289 		result = jumpshot_bulk_write(us, buffer, len);
290 		if (result != USB_STOR_XFER_GOOD)
291 			goto leave;
292 
293 		// read the result.  apparently the bulk write can complete
294 		// before the jumpshot drive is finished writing.  so we loop
295 		// here until we get a good return code
296 		waitcount = 0;
297 		do {
298 			result = jumpshot_get_status(us);
299 			if (result != USB_STOR_TRANSPORT_GOOD) {
300 				// I have not experimented to find the smallest value.
301 				//
302 				msleep(50);
303 			}
304 		} while ((result != USB_STOR_TRANSPORT_GOOD) && (waitcount < 10));
305 
306 		if (result != USB_STOR_TRANSPORT_GOOD)
307 			usb_stor_dbg(us, "Gah!  Waitcount = 10.  Bad write!?\n");
308 
309 		sector += thistime;
310 		totallen -= len;
311 	} while (totallen > 0);
312 
313 	kfree(buffer);
314 	return result;
315 
316  leave:
317 	kfree(buffer);
318 	return USB_STOR_TRANSPORT_ERROR;
319 }
320 
321 static int jumpshot_id_device(struct us_data *us,
322 			      struct jumpshot_info *info)
323 {
324 	unsigned char *command = us->iobuf;
325 	unsigned char *reply;
326 	int 	 rc;
327 
328 	if (!info)
329 		return USB_STOR_TRANSPORT_ERROR;
330 
331 	command[0] = 0xE0;
332 	command[1] = 0xEC;
333 	reply = kmalloc(512, GFP_NOIO);
334 	if (!reply)
335 		return USB_STOR_TRANSPORT_ERROR;
336 
337 	// send the setup
338 	rc = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
339 				   0, 0x20, 0, 6, command, 2);
340 
341 	if (rc != USB_STOR_XFER_GOOD) {
342 		usb_stor_dbg(us, "Gah! send_control for read_capacity failed\n");
343 		rc = USB_STOR_TRANSPORT_ERROR;
344 		goto leave;
345 	}
346 
347 	// read the reply
348 	rc = jumpshot_bulk_read(us, reply, 512);
349 	if (rc != USB_STOR_XFER_GOOD) {
350 		rc = USB_STOR_TRANSPORT_ERROR;
351 		goto leave;
352 	}
353 
354 	info->sectors = ((u32)(reply[117]) << 24) |
355 			((u32)(reply[116]) << 16) |
356 			((u32)(reply[115]) <<  8) |
357 			((u32)(reply[114])      );
358 
359 	rc = USB_STOR_TRANSPORT_GOOD;
360 
361  leave:
362 	kfree(reply);
363 	return rc;
364 }
365 
366 static int jumpshot_handle_mode_sense(struct us_data *us,
367 				      struct scsi_cmnd * srb,
368 				      int sense_6)
369 {
370 	static unsigned char rw_err_page[12] = {
371 		0x1, 0xA, 0x21, 1, 0, 0, 0, 0, 1, 0, 0, 0
372 	};
373 	static unsigned char cache_page[12] = {
374 		0x8, 0xA, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0
375 	};
376 	static unsigned char rbac_page[12] = {
377 		0x1B, 0xA, 0, 0x81, 0, 0, 0, 0, 0, 0, 0, 0
378 	};
379 	static unsigned char timer_page[8] = {
380 		0x1C, 0x6, 0, 0, 0, 0
381 	};
382 	unsigned char pc, page_code;
383 	unsigned int i = 0;
384 	struct jumpshot_info *info = (struct jumpshot_info *) (us->extra);
385 	unsigned char *ptr = us->iobuf;
386 
387 	pc = srb->cmnd[2] >> 6;
388 	page_code = srb->cmnd[2] & 0x3F;
389 
390 	switch (pc) {
391 	   case 0x0:
392 		   usb_stor_dbg(us, "Current values\n");
393 		   break;
394 	   case 0x1:
395 		   usb_stor_dbg(us, "Changeable values\n");
396 		   break;
397 	   case 0x2:
398 		   usb_stor_dbg(us, "Default values\n");
399 		   break;
400 	   case 0x3:
401 		   usb_stor_dbg(us, "Saves values\n");
402 		   break;
403 	}
404 
405 	memset(ptr, 0, 8);
406 	if (sense_6) {
407 		ptr[2] = 0x00;		// WP enable: 0x80
408 		i = 4;
409 	} else {
410 		ptr[3] = 0x00;		// WP enable: 0x80
411 		i = 8;
412 	}
413 
414 	switch (page_code) {
415 	   case 0x0:
416 		// vendor-specific mode
417 		info->sense_key = 0x05;
418 		info->sense_asc = 0x24;
419 		info->sense_ascq = 0x00;
420 		return USB_STOR_TRANSPORT_FAILED;
421 
422 	   case 0x1:
423 		memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
424 		i += sizeof(rw_err_page);
425 		break;
426 
427 	   case 0x8:
428 		memcpy(ptr + i, cache_page, sizeof(cache_page));
429 		i += sizeof(cache_page);
430 		break;
431 
432 	   case 0x1B:
433 		memcpy(ptr + i, rbac_page, sizeof(rbac_page));
434 		i += sizeof(rbac_page);
435 		break;
436 
437 	   case 0x1C:
438 		memcpy(ptr + i, timer_page, sizeof(timer_page));
439 		i += sizeof(timer_page);
440 		break;
441 
442 	   case 0x3F:
443 		memcpy(ptr + i, timer_page, sizeof(timer_page));
444 		i += sizeof(timer_page);
445 		memcpy(ptr + i, rbac_page, sizeof(rbac_page));
446 		i += sizeof(rbac_page);
447 		memcpy(ptr + i, cache_page, sizeof(cache_page));
448 		i += sizeof(cache_page);
449 		memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
450 		i += sizeof(rw_err_page);
451 		break;
452 	}
453 
454 	if (sense_6)
455 		ptr[0] = i - 1;
456 	else
457 		((__be16 *) ptr)[0] = cpu_to_be16(i - 2);
458 	usb_stor_set_xfer_buf(ptr, i, srb);
459 
460 	return USB_STOR_TRANSPORT_GOOD;
461 }
462 
463 
464 static void jumpshot_info_destructor(void *extra)
465 {
466 	// this routine is a placeholder...
467 	// currently, we don't allocate any extra blocks so we're okay
468 }
469 
470 
471 
472 // Transport for the Lexar 'Jumpshot'
473 //
474 static int jumpshot_transport(struct scsi_cmnd *srb, struct us_data *us)
475 {
476 	struct jumpshot_info *info;
477 	int rc;
478 	unsigned long block, blocks;
479 	unsigned char *ptr = us->iobuf;
480 	static unsigned char inquiry_response[8] = {
481 		0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
482 	};
483 
484 	if (!us->extra) {
485 		us->extra = kzalloc(sizeof(struct jumpshot_info), GFP_NOIO);
486 		if (!us->extra)
487 			return USB_STOR_TRANSPORT_ERROR;
488 
489 		us->extra_destructor = jumpshot_info_destructor;
490 	}
491 
492 	info = (struct jumpshot_info *) (us->extra);
493 
494 	if (srb->cmnd[0] == INQUIRY) {
495 		usb_stor_dbg(us, "INQUIRY - Returning bogus response\n");
496 		memcpy(ptr, inquiry_response, sizeof(inquiry_response));
497 		fill_inquiry_response(us, ptr, 36);
498 		return USB_STOR_TRANSPORT_GOOD;
499 	}
500 
501 	if (srb->cmnd[0] == READ_CAPACITY) {
502 		info->ssize = 0x200;  // hard coded 512 byte sectors as per ATA spec
503 
504 		rc = jumpshot_get_status(us);
505 		if (rc != USB_STOR_TRANSPORT_GOOD)
506 			return rc;
507 
508 		rc = jumpshot_id_device(us, info);
509 		if (rc != USB_STOR_TRANSPORT_GOOD)
510 			return rc;
511 
512 		usb_stor_dbg(us, "READ_CAPACITY:  %ld sectors, %ld bytes per sector\n",
513 			     info->sectors, info->ssize);
514 
515 		// build the reply
516 		//
517 		((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
518 		((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
519 		usb_stor_set_xfer_buf(ptr, 8, srb);
520 
521 		return USB_STOR_TRANSPORT_GOOD;
522 	}
523 
524 	if (srb->cmnd[0] == MODE_SELECT_10) {
525 		usb_stor_dbg(us, "Gah! MODE_SELECT_10\n");
526 		return USB_STOR_TRANSPORT_ERROR;
527 	}
528 
529 	if (srb->cmnd[0] == READ_10) {
530 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
531 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
532 
533 		blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
534 
535 		usb_stor_dbg(us, "READ_10: read block 0x%04lx  count %ld\n",
536 			     block, blocks);
537 		return jumpshot_read_data(us, info, block, blocks);
538 	}
539 
540 	if (srb->cmnd[0] == READ_12) {
541 		// I don't think we'll ever see a READ_12 but support it anyway...
542 		//
543 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
544 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
545 
546 		blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
547 			 ((u32)(srb->cmnd[8]) <<  8) | ((u32)(srb->cmnd[9]));
548 
549 		usb_stor_dbg(us, "READ_12: read block 0x%04lx  count %ld\n",
550 			     block, blocks);
551 		return jumpshot_read_data(us, info, block, blocks);
552 	}
553 
554 	if (srb->cmnd[0] == WRITE_10) {
555 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
556 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
557 
558 		blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
559 
560 		usb_stor_dbg(us, "WRITE_10: write block 0x%04lx  count %ld\n",
561 			     block, blocks);
562 		return jumpshot_write_data(us, info, block, blocks);
563 	}
564 
565 	if (srb->cmnd[0] == WRITE_12) {
566 		// I don't think we'll ever see a WRITE_12 but support it anyway...
567 		//
568 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
569 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
570 
571 		blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
572 			 ((u32)(srb->cmnd[8]) <<  8) | ((u32)(srb->cmnd[9]));
573 
574 		usb_stor_dbg(us, "WRITE_12: write block 0x%04lx  count %ld\n",
575 			     block, blocks);
576 		return jumpshot_write_data(us, info, block, blocks);
577 	}
578 
579 
580 	if (srb->cmnd[0] == TEST_UNIT_READY) {
581 		usb_stor_dbg(us, "TEST_UNIT_READY\n");
582 		return jumpshot_get_status(us);
583 	}
584 
585 	if (srb->cmnd[0] == REQUEST_SENSE) {
586 		usb_stor_dbg(us, "REQUEST_SENSE\n");
587 
588 		memset(ptr, 0, 18);
589 		ptr[0] = 0xF0;
590 		ptr[2] = info->sense_key;
591 		ptr[7] = 11;
592 		ptr[12] = info->sense_asc;
593 		ptr[13] = info->sense_ascq;
594 		usb_stor_set_xfer_buf(ptr, 18, srb);
595 
596 		return USB_STOR_TRANSPORT_GOOD;
597 	}
598 
599 	if (srb->cmnd[0] == MODE_SENSE) {
600 		usb_stor_dbg(us, "MODE_SENSE_6 detected\n");
601 		return jumpshot_handle_mode_sense(us, srb, 1);
602 	}
603 
604 	if (srb->cmnd[0] == MODE_SENSE_10) {
605 		usb_stor_dbg(us, "MODE_SENSE_10 detected\n");
606 		return jumpshot_handle_mode_sense(us, srb, 0);
607 	}
608 
609 	if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
610 		/*
611 		 * sure.  whatever.  not like we can stop the user from popping
612 		 * the media out of the device (no locking doors, etc)
613 		 */
614 		return USB_STOR_TRANSPORT_GOOD;
615 	}
616 
617 	if (srb->cmnd[0] == START_STOP) {
618 		/*
619 		 * this is used by sd.c'check_scsidisk_media_change to detect
620 		 * media change
621 		 */
622 		usb_stor_dbg(us, "START_STOP\n");
623 		/*
624 		 * the first jumpshot_id_device after a media change returns
625 		 * an error (determined experimentally)
626 		 */
627 		rc = jumpshot_id_device(us, info);
628 		if (rc == USB_STOR_TRANSPORT_GOOD) {
629 			info->sense_key = NO_SENSE;
630 			srb->result = SUCCESS;
631 		} else {
632 			info->sense_key = UNIT_ATTENTION;
633 			srb->result = SAM_STAT_CHECK_CONDITION;
634 		}
635 		return rc;
636 	}
637 
638 	usb_stor_dbg(us, "Gah! Unknown command: %d (0x%x)\n",
639 		     srb->cmnd[0], srb->cmnd[0]);
640 	info->sense_key = 0x05;
641 	info->sense_asc = 0x20;
642 	info->sense_ascq = 0x00;
643 	return USB_STOR_TRANSPORT_FAILED;
644 }
645 
646 static struct scsi_host_template jumpshot_host_template;
647 
648 static int jumpshot_probe(struct usb_interface *intf,
649 			 const struct usb_device_id *id)
650 {
651 	struct us_data *us;
652 	int result;
653 
654 	result = usb_stor_probe1(&us, intf, id,
655 			(id - jumpshot_usb_ids) + jumpshot_unusual_dev_list,
656 			&jumpshot_host_template);
657 	if (result)
658 		return result;
659 
660 	us->transport_name  = "Lexar Jumpshot Control/Bulk";
661 	us->transport = jumpshot_transport;
662 	us->transport_reset = usb_stor_Bulk_reset;
663 	us->max_lun = 1;
664 
665 	result = usb_stor_probe2(us);
666 	return result;
667 }
668 
669 static struct usb_driver jumpshot_driver = {
670 	.name =		DRV_NAME,
671 	.probe =	jumpshot_probe,
672 	.disconnect =	usb_stor_disconnect,
673 	.suspend =	usb_stor_suspend,
674 	.resume =	usb_stor_resume,
675 	.reset_resume =	usb_stor_reset_resume,
676 	.pre_reset =	usb_stor_pre_reset,
677 	.post_reset =	usb_stor_post_reset,
678 	.id_table =	jumpshot_usb_ids,
679 	.soft_unbind =	1,
680 	.no_dynamic_id = 1,
681 };
682 
683 module_usb_stor_driver(jumpshot_driver, jumpshot_host_template, DRV_NAME);
684