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11#include <linux/types.h>
12#include <linux/string.h>
13#include <linux/kernel.h>
14#include <linux/export.h>
15#include <linux/sched.h>
16#include <linux/interrupt.h>
17#include <linux/errno.h>
18#include <linux/slab.h>
19#include <linux/delay.h>
20#include <linux/hdreg.h>
21#include <linux/ide.h>
22#include <linux/nmi.h>
23#include <linux/scatterlist.h>
24#include <linux/uaccess.h>
25
26#include <asm/io.h>
27
28void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd)
29{
30 ide_hwif_t *hwif = drive->hwif;
31 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
32
33
34 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
35
36 tp_ops->tf_read(drive, &cmd->tf, cmd->valid.in.tf);
37
38 if (cmd->tf_flags & IDE_TFLAG_LBA48) {
39 tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS);
40
41 tp_ops->tf_read(drive, &cmd->hob, cmd->valid.in.hob);
42 }
43}
44
45void ide_tf_dump(const char *s, struct ide_cmd *cmd)
46{
47#ifdef DEBUG
48 printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
49 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
50 s, cmd->tf.feature, cmd->tf.nsect,
51 cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah,
52 cmd->tf.device, cmd->tf.command);
53 printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n",
54 s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah);
55#endif
56}
57
58int taskfile_lib_get_identify(ide_drive_t *drive, u8 *buf)
59{
60 struct ide_cmd cmd;
61
62 memset(&cmd, 0, sizeof(cmd));
63 cmd.tf.nsect = 0x01;
64 if (drive->media == ide_disk)
65 cmd.tf.command = ATA_CMD_ID_ATA;
66 else
67 cmd.tf.command = ATA_CMD_ID_ATAPI;
68 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
69 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
70 cmd.protocol = ATA_PROT_PIO;
71
72 return ide_raw_taskfile(drive, &cmd, buf, 1);
73}
74
75static ide_startstop_t task_no_data_intr(ide_drive_t *);
76static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
77static ide_startstop_t task_pio_intr(ide_drive_t *);
78
79ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
80{
81 ide_hwif_t *hwif = drive->hwif;
82 struct ide_cmd *cmd = &hwif->cmd;
83 struct ide_taskfile *tf = &cmd->tf;
84 ide_handler_t *handler = NULL;
85 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
86 const struct ide_dma_ops *dma_ops = hwif->dma_ops;
87
88 if (orig_cmd->protocol == ATA_PROT_PIO &&
89 (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) &&
90 drive->mult_count == 0) {
91 pr_err("%s: multimode not set!\n", drive->name);
92 return ide_stopped;
93 }
94
95 if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
96 orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;
97
98 memcpy(cmd, orig_cmd, sizeof(*cmd));
99
100 if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
101 ide_tf_dump(drive->name, cmd);
102 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
103
104 if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
105 u8 data[2] = { cmd->tf.data, cmd->hob.data };
106
107 tp_ops->output_data(drive, cmd, data, 2);
108 }
109
110 if (cmd->valid.out.tf & IDE_VALID_DEVICE) {
111 u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ?
112 0xE0 : 0xEF;
113
114 if (!(cmd->ftf_flags & IDE_FTFLAG_FLAGGED))
115 cmd->tf.device &= HIHI;
116 cmd->tf.device |= drive->select;
117 }
118
119 tp_ops->tf_load(drive, &cmd->hob, cmd->valid.out.hob);
120 tp_ops->tf_load(drive, &cmd->tf, cmd->valid.out.tf);
121 }
122
123 switch (cmd->protocol) {
124 case ATA_PROT_PIO:
125 if (cmd->tf_flags & IDE_TFLAG_WRITE) {
126 tp_ops->exec_command(hwif, tf->command);
127 ndelay(400);
128 return pre_task_out_intr(drive, cmd);
129 }
130 handler = task_pio_intr;
131
132 case ATA_PROT_NODATA:
133 if (handler == NULL)
134 handler = task_no_data_intr;
135 ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE);
136 return ide_started;
137 case ATA_PROT_DMA:
138 if (ide_dma_prepare(drive, cmd))
139 return ide_stopped;
140 hwif->expiry = dma_ops->dma_timer_expiry;
141 ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD);
142 dma_ops->dma_start(drive);
143 default:
144 return ide_started;
145 }
146}
147EXPORT_SYMBOL_GPL(do_rw_taskfile);
148
149static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
150{
151 ide_hwif_t *hwif = drive->hwif;
152 struct ide_cmd *cmd = &hwif->cmd;
153 struct ide_taskfile *tf = &cmd->tf;
154 int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0;
155 int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1;
156 u8 stat;
157
158 local_irq_enable_in_hardirq();
159
160 while (1) {
161 stat = hwif->tp_ops->read_status(hwif);
162 if ((stat & ATA_BUSY) == 0 || retries-- == 0)
163 break;
164 udelay(10);
165 };
166
167 if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) {
168 if (custom && tf->command == ATA_CMD_SET_MULTI) {
169 drive->mult_req = drive->mult_count = 0;
170 drive->special_flags |= IDE_SFLAG_RECALIBRATE;
171 (void)ide_dump_status(drive, __func__, stat);
172 return ide_stopped;
173 } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) {
174 if ((stat & (ATA_ERR | ATA_DRQ)) == 0) {
175 ide_set_handler(drive, &task_no_data_intr,
176 WAIT_WORSTCASE);
177 return ide_started;
178 }
179 }
180 return ide_error(drive, "task_no_data_intr", stat);
181 }
182
183 if (custom && tf->command == ATA_CMD_SET_MULTI)
184 drive->mult_count = drive->mult_req;
185
186 if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE ||
187 tf->command == ATA_CMD_CHK_POWER) {
188 struct request *rq = hwif->rq;
189
190 if (ata_pm_request(rq))
191 ide_complete_pm_rq(drive, rq);
192 else
193 ide_finish_cmd(drive, cmd, stat);
194 }
195
196 return ide_stopped;
197}
198
199static u8 wait_drive_not_busy(ide_drive_t *drive)
200{
201 ide_hwif_t *hwif = drive->hwif;
202 int retries;
203 u8 stat;
204
205
206
207
208
209 for (retries = 0; retries < 1000; retries++) {
210 stat = hwif->tp_ops->read_status(hwif);
211
212 if (stat & ATA_BUSY)
213 udelay(10);
214 else
215 break;
216 }
217
218 if (stat & ATA_BUSY)
219 pr_err("%s: drive still BUSY!\n", drive->name);
220
221 return stat;
222}
223
224void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd,
225 unsigned int write, unsigned int len)
226{
227 ide_hwif_t *hwif = drive->hwif;
228 struct scatterlist *sg = hwif->sg_table;
229 struct scatterlist *cursg = cmd->cursg;
230 unsigned long uninitialized_var(flags);
231 struct page *page;
232 unsigned int offset;
233 u8 *buf;
234
235 if (cursg == NULL)
236 cursg = cmd->cursg = sg;
237
238 while (len) {
239 unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs);
240
241 page = sg_page(cursg);
242 offset = cursg->offset + cmd->cursg_ofs;
243
244
245 page = nth_page(page, (offset >> PAGE_SHIFT));
246 offset %= PAGE_SIZE;
247
248 nr_bytes = min_t(unsigned, nr_bytes, (PAGE_SIZE - offset));
249
250 buf = kmap_atomic(page) + offset;
251
252 cmd->nleft -= nr_bytes;
253 cmd->cursg_ofs += nr_bytes;
254
255 if (cmd->cursg_ofs == cursg->length) {
256 cursg = cmd->cursg = sg_next(cmd->cursg);
257 cmd->cursg_ofs = 0;
258 }
259
260
261 if (write)
262 hwif->tp_ops->output_data(drive, cmd, buf, nr_bytes);
263 else
264 hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes);
265
266 kunmap_atomic(buf);
267
268 len -= nr_bytes;
269 }
270}
271EXPORT_SYMBOL_GPL(ide_pio_bytes);
272
273static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd,
274 unsigned int write)
275{
276 unsigned int nr_bytes;
277
278 u8 saved_io_32bit = drive->io_32bit;
279
280 if (cmd->tf_flags & IDE_TFLAG_FS)
281 scsi_req(cmd->rq)->result = 0;
282
283 if (cmd->tf_flags & IDE_TFLAG_IO_16BIT)
284 drive->io_32bit = 0;
285
286 touch_softlockup_watchdog();
287
288 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
289 nr_bytes = min_t(unsigned, cmd->nleft, drive->mult_count << 9);
290 else
291 nr_bytes = SECTOR_SIZE;
292
293 ide_pio_bytes(drive, cmd, write, nr_bytes);
294
295 drive->io_32bit = saved_io_32bit;
296}
297
298static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
299{
300 if (cmd->tf_flags & IDE_TFLAG_FS) {
301 int nr_bytes = cmd->nbytes - cmd->nleft;
302
303 if (cmd->protocol == ATA_PROT_PIO &&
304 ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) {
305 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
306 nr_bytes -= drive->mult_count << 9;
307 else
308 nr_bytes -= SECTOR_SIZE;
309 }
310
311 if (nr_bytes > 0)
312 ide_complete_rq(drive, BLK_STS_OK, nr_bytes);
313 }
314}
315
316void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat)
317{
318 struct request *rq = drive->hwif->rq;
319 u8 err = ide_read_error(drive), nsect = cmd->tf.nsect;
320 u8 set_xfer = !!(cmd->tf_flags & IDE_TFLAG_SET_XFER);
321
322 ide_complete_cmd(drive, cmd, stat, err);
323 scsi_req(rq)->result = err;
324
325 if (err == 0 && set_xfer) {
326 ide_set_xfer_rate(drive, nsect);
327 ide_driveid_update(drive);
328 }
329
330 ide_complete_rq(drive, err ? BLK_STS_IOERR : BLK_STS_OK, blk_rq_bytes(rq));
331}
332
333
334
335
336static ide_startstop_t task_pio_intr(ide_drive_t *drive)
337{
338 ide_hwif_t *hwif = drive->hwif;
339 struct ide_cmd *cmd = &drive->hwif->cmd;
340 u8 stat = hwif->tp_ops->read_status(hwif);
341 u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
342
343 if (write == 0) {
344
345 if (stat & ATA_ERR)
346 goto out_err;
347
348
349 if ((stat & ATA_DRQ) == 0) {
350
351 if (OK_STAT(stat, ATA_DRDY, ATA_BUSY))
352 goto out_end;
353
354
355 goto out_wait;
356 }
357 } else {
358 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
359 goto out_err;
360
361
362 if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
363 goto out_err;
364 }
365
366 if (write && cmd->nleft == 0)
367 goto out_end;
368
369
370 ide_pio_datablock(drive, cmd, write);
371
372
373 if (write == 0 && cmd->nleft == 0) {
374 stat = wait_drive_not_busy(drive);
375 if (!OK_STAT(stat, 0, BAD_STAT))
376 goto out_err;
377
378 goto out_end;
379 }
380out_wait:
381
382 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
383 return ide_started;
384out_end:
385 if ((cmd->tf_flags & IDE_TFLAG_FS) == 0)
386 ide_finish_cmd(drive, cmd, stat);
387 else
388 ide_complete_rq(drive, BLK_STS_OK, blk_rq_sectors(cmd->rq) << 9);
389 return ide_stopped;
390out_err:
391 ide_error_cmd(drive, cmd);
392 return ide_error(drive, __func__, stat);
393}
394
395static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
396 struct ide_cmd *cmd)
397{
398 ide_startstop_t startstop;
399
400 if (ide_wait_stat(&startstop, drive, ATA_DRQ,
401 drive->bad_wstat, WAIT_DRQ)) {
402 pr_err("%s: no DRQ after issuing %sWRITE%s\n", drive->name,
403 (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "",
404 (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : "");
405 return startstop;
406 }
407
408 if (!force_irqthreads && (drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
409 local_irq_disable();
410
411 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
412
413 ide_pio_datablock(drive, cmd, 1);
414
415 return ide_started;
416}
417
418int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
419 u16 nsect)
420{
421 struct request *rq;
422 int error;
423
424 rq = blk_get_request(drive->queue,
425 (cmd->tf_flags & IDE_TFLAG_WRITE) ?
426 REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
427 ide_req(rq)->type = ATA_PRIV_TASKFILE;
428
429
430
431
432
433
434
435 if (nsect) {
436 error = blk_rq_map_kern(drive->queue, rq, buf,
437 nsect * SECTOR_SIZE, GFP_NOIO);
438 if (error)
439 goto put_req;
440 }
441
442 ide_req(rq)->special = cmd;
443 cmd->rq = rq;
444
445 blk_execute_rq(drive->queue, NULL, rq, 0);
446 error = scsi_req(rq)->result ? -EIO : 0;
447put_req:
448 blk_put_request(rq);
449 return error;
450}
451EXPORT_SYMBOL(ide_raw_taskfile);
452
453int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd)
454{
455 cmd->protocol = ATA_PROT_NODATA;
456
457 return ide_raw_taskfile(drive, cmd, NULL, 0);
458}
459EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
460
461#ifdef CONFIG_IDE_TASK_IOCTL
462int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
463{
464 ide_task_request_t *req_task;
465 struct ide_cmd cmd;
466 u8 *outbuf = NULL;
467 u8 *inbuf = NULL;
468 u8 *data_buf = NULL;
469 int err = 0;
470 int tasksize = sizeof(struct ide_task_request_s);
471 unsigned int taskin = 0;
472 unsigned int taskout = 0;
473 u16 nsect = 0;
474 char __user *buf = (char __user *)arg;
475
476 req_task = memdup_user(buf, tasksize);
477 if (IS_ERR(req_task))
478 return PTR_ERR(req_task);
479
480 taskout = req_task->out_size;
481 taskin = req_task->in_size;
482
483 if (taskin > 65536 || taskout > 65536) {
484 err = -EINVAL;
485 goto abort;
486 }
487
488 if (taskout) {
489 int outtotal = tasksize;
490 outbuf = kzalloc(taskout, GFP_KERNEL);
491 if (outbuf == NULL) {
492 err = -ENOMEM;
493 goto abort;
494 }
495 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
496 err = -EFAULT;
497 goto abort;
498 }
499 }
500
501 if (taskin) {
502 int intotal = tasksize + taskout;
503 inbuf = kzalloc(taskin, GFP_KERNEL);
504 if (inbuf == NULL) {
505 err = -ENOMEM;
506 goto abort;
507 }
508 if (copy_from_user(inbuf, buf + intotal, taskin)) {
509 err = -EFAULT;
510 goto abort;
511 }
512 }
513
514 memset(&cmd, 0, sizeof(cmd));
515
516 memcpy(&cmd.hob, req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
517 memcpy(&cmd.tf, req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
518
519 cmd.valid.out.tf = IDE_VALID_DEVICE;
520 cmd.valid.in.tf = IDE_VALID_DEVICE | IDE_VALID_IN_TF;
521 cmd.tf_flags = IDE_TFLAG_IO_16BIT;
522
523 if (drive->dev_flags & IDE_DFLAG_LBA48) {
524 cmd.tf_flags |= IDE_TFLAG_LBA48;
525 cmd.valid.in.hob = IDE_VALID_IN_HOB;
526 }
527
528 if (req_task->out_flags.all) {
529 cmd.ftf_flags |= IDE_FTFLAG_FLAGGED;
530
531 if (req_task->out_flags.b.data)
532 cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA;
533
534 if (req_task->out_flags.b.nsector_hob)
535 cmd.valid.out.hob |= IDE_VALID_NSECT;
536 if (req_task->out_flags.b.sector_hob)
537 cmd.valid.out.hob |= IDE_VALID_LBAL;
538 if (req_task->out_flags.b.lcyl_hob)
539 cmd.valid.out.hob |= IDE_VALID_LBAM;
540 if (req_task->out_flags.b.hcyl_hob)
541 cmd.valid.out.hob |= IDE_VALID_LBAH;
542
543 if (req_task->out_flags.b.error_feature)
544 cmd.valid.out.tf |= IDE_VALID_FEATURE;
545 if (req_task->out_flags.b.nsector)
546 cmd.valid.out.tf |= IDE_VALID_NSECT;
547 if (req_task->out_flags.b.sector)
548 cmd.valid.out.tf |= IDE_VALID_LBAL;
549 if (req_task->out_flags.b.lcyl)
550 cmd.valid.out.tf |= IDE_VALID_LBAM;
551 if (req_task->out_flags.b.hcyl)
552 cmd.valid.out.tf |= IDE_VALID_LBAH;
553 } else {
554 cmd.valid.out.tf |= IDE_VALID_OUT_TF;
555 if (cmd.tf_flags & IDE_TFLAG_LBA48)
556 cmd.valid.out.hob |= IDE_VALID_OUT_HOB;
557 }
558
559 if (req_task->in_flags.b.data)
560 cmd.ftf_flags |= IDE_FTFLAG_IN_DATA;
561
562 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) {
563
564 if (req_task->data_phase == TASKFILE_IN_DMAQ ||
565 req_task->data_phase == TASKFILE_IN_DMA)
566 cmd.tf_flags |= IDE_TFLAG_WRITE;
567 }
568
569 cmd.protocol = ATA_PROT_DMA;
570
571 switch (req_task->data_phase) {
572 case TASKFILE_MULTI_OUT:
573 if (!drive->mult_count) {
574
575 pr_err("%s: %s Multimode Write multcount is not set\n",
576 drive->name, __func__);
577 err = -EPERM;
578 goto abort;
579 }
580 cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
581
582 case TASKFILE_OUT:
583 cmd.protocol = ATA_PROT_PIO;
584
585 case TASKFILE_OUT_DMAQ:
586 case TASKFILE_OUT_DMA:
587 cmd.tf_flags |= IDE_TFLAG_WRITE;
588 nsect = taskout / SECTOR_SIZE;
589 data_buf = outbuf;
590 break;
591 case TASKFILE_MULTI_IN:
592 if (!drive->mult_count) {
593
594 pr_err("%s: %s Multimode Read multcount is not set\n",
595 drive->name, __func__);
596 err = -EPERM;
597 goto abort;
598 }
599 cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
600
601 case TASKFILE_IN:
602 cmd.protocol = ATA_PROT_PIO;
603
604 case TASKFILE_IN_DMAQ:
605 case TASKFILE_IN_DMA:
606 nsect = taskin / SECTOR_SIZE;
607 data_buf = inbuf;
608 break;
609 case TASKFILE_NO_DATA:
610 cmd.protocol = ATA_PROT_NODATA;
611 break;
612 default:
613 err = -EFAULT;
614 goto abort;
615 }
616
617 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
618 nsect = 0;
619 else if (!nsect) {
620 nsect = (cmd.hob.nsect << 8) | cmd.tf.nsect;
621
622 if (!nsect) {
623 pr_err("%s: in/out command without data\n",
624 drive->name);
625 err = -EFAULT;
626 goto abort;
627 }
628 }
629
630 err = ide_raw_taskfile(drive, &cmd, data_buf, nsect);
631
632 memcpy(req_task->hob_ports, &cmd.hob, HDIO_DRIVE_HOB_HDR_SIZE - 2);
633 memcpy(req_task->io_ports, &cmd.tf, HDIO_DRIVE_TASK_HDR_SIZE);
634
635 if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) &&
636 req_task->in_flags.all == 0) {
637 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
638 if (drive->dev_flags & IDE_DFLAG_LBA48)
639 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
640 }
641
642 if (copy_to_user(buf, req_task, tasksize)) {
643 err = -EFAULT;
644 goto abort;
645 }
646 if (taskout) {
647 int outtotal = tasksize;
648 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
649 err = -EFAULT;
650 goto abort;
651 }
652 }
653 if (taskin) {
654 int intotal = tasksize + taskout;
655 if (copy_to_user(buf + intotal, inbuf, taskin)) {
656 err = -EFAULT;
657 goto abort;
658 }
659 }
660abort:
661 kfree(req_task);
662 kfree(outbuf);
663 kfree(inbuf);
664
665 return err;
666}
667#endif
668
