summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/isci/remote_device.c
blob: dbf3c82f61959c4d9c92c82b6bdb7d4374053852 (plain)
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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
/*
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * BSD LICENSE
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of Intel Corporation nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "isci.h"
#include "scic_io_request.h"
#include "scic_remote_device.h"
#include "scic_phy.h"
#include "scic_port.h"
#include "port.h"
#include "remote_device.h"
#include "request.h"
#include "task.h"



/**
 * isci_remote_device_deconstruct() - This function frees an isci_remote_device.
 * @isci_host: This parameter specifies the isci host object.
 * @isci_device: This parameter specifies the remote device to be freed.
 *
 */
static void isci_remote_device_deconstruct(
	struct isci_host *isci_host,
	struct isci_remote_device *isci_device)
{
	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_device = %p\n", __func__, isci_device);

	/* There should not be any outstanding io's. All paths to
	 * here should go through isci_remote_device_nuke_requests.
	 * If we hit this condition, we will need a way to complete
	 * io requests in process */
	while (!list_empty(&isci_device->reqs_in_process)) {

		dev_err(&isci_host->pdev->dev,
			"%s: ** request list not empty! **\n", __func__);
		BUG();
	}

	/* Remove all related references to this device and free
	 * the cache object.
	 */
	scic_remote_device_destruct(isci_device->sci_device_handle);
	isci_device->domain_dev->lldd_dev = NULL;
	list_del(&isci_device->node);
	kmem_cache_free(isci_kmem_cache, isci_device);
}


/**
 * isci_remote_device_construct() - This function calls the scic remote device
 *    construct and start functions, it waits on the remote device start
 *    completion.
 * @port: This parameter specifies the isci port with the remote device.
 * @isci_device: This parameter specifies the isci remote device
 *
 * status from the scic calls, the caller to this function should clean up
 * resources as appropriate.
 */
static enum sci_status isci_remote_device_construct(
	struct isci_port *port,
	struct isci_remote_device *isci_device)
{
	enum sci_status status = SCI_SUCCESS;

	/* let the core do it's common constuction. */
	scic_remote_device_construct(port->sci_port_handle,
				     isci_device->sci_device_handle);

	/* let the core do it's device specific constuction. */
	if (isci_device->domain_dev->parent &&
	    (isci_device->domain_dev->parent->dev_type == EDGE_DEV)) {
		int i;

		/* struct smp_response_discover discover_response; */
		struct discover_resp discover_response;
		struct domain_device *parent =
			isci_device->domain_dev->parent;

		struct expander_device *parent_ex = &parent->ex_dev;

		for (i = 0; i < parent_ex->num_phys; i++) {

			struct ex_phy *phy = &parent_ex->ex_phy[i];

			if ((phy->phy_state == PHY_VACANT) ||
			    (phy->phy_state == PHY_NOT_PRESENT))
				continue;

			if (SAS_ADDR(phy->attached_sas_addr)
			    == SAS_ADDR(isci_device->domain_dev->sas_addr)) {

				discover_response.attached_dev_type
					= phy->attached_dev_type;
				discover_response.linkrate
					= phy->linkrate;
				discover_response.attached_sata_host
					= phy->attached_sata_host;
				discover_response.attached_sata_dev
					= phy->attached_sata_dev;
				discover_response.attached_sata_ps
					= phy->attached_sata_ps;
				discover_response.iproto
					= phy->attached_iproto >> 1;
				discover_response.tproto
					= phy->attached_tproto >> 1;
				memcpy(
					discover_response.attached_sas_addr,
					phy->attached_sas_addr,
					SAS_ADDR_SIZE
					);
				discover_response.attached_phy_id
					= phy->attached_phy_id;
				discover_response.change_count
					= phy->phy_change_count;
				discover_response.routing_attr
					= phy->routing_attr;
				discover_response.hmin_linkrate
					= phy->phy->minimum_linkrate_hw;
				discover_response.hmax_linkrate
					= phy->phy->maximum_linkrate_hw;
				discover_response.pmin_linkrate
					= phy->phy->minimum_linkrate;
				discover_response.pmax_linkrate
					= phy->phy->maximum_linkrate;
			}
		}


		dev_dbg(&port->isci_host->pdev->dev,
			"%s: parent->dev_type = EDGE_DEV\n",
			__func__);

		status = scic_remote_device_ea_construct(
			isci_device->sci_device_handle,
			(struct smp_response_discover *)&discover_response
			);

	} else
		status = scic_remote_device_da_construct(
			isci_device->sci_device_handle
			);


	if (status != SCI_SUCCESS) {
		dev_dbg(&port->isci_host->pdev->dev,
			"%s: scic_remote_device_da_construct failed - "
			"isci_device = %p\n",
			__func__,
			isci_device);

		return status;
	}

	sci_object_set_association(
		isci_device->sci_device_handle,
		isci_device
		);

	BUG_ON(port->isci_host == NULL);

	/* start the device. */
	status = scic_remote_device_start(
		isci_device->sci_device_handle,
		ISCI_REMOTE_DEVICE_START_TIMEOUT
		);

	if (status != SCI_SUCCESS) {
		dev_warn(&port->isci_host->pdev->dev,
			 "%s: scic_remote_device_start failed\n",
			 __func__);
		return status;
	}

	return status;
}


/**
 * isci_remote_device_nuke_requests() - This function terminates all requests
 *    for a given remote device.
 * @isci_device: This parameter specifies the remote device
 *
 */
void isci_remote_device_nuke_requests(
	struct isci_remote_device *isci_device)
{
	DECLARE_COMPLETION_ONSTACK(aborted_task_completion);
	struct isci_host *isci_host;

	isci_host = isci_device->isci_port->isci_host;

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_device = %p\n", __func__, isci_device);

	/* Cleanup all requests pending for this device. */
	isci_terminate_pending_requests(isci_host, isci_device, terminating);

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_device = %p, done\n", __func__, isci_device);
}



/**
 * This function builds the isci_remote_device when a libsas dev_found message
 *    is received.
 * @isci_host: This parameter specifies the isci host object.
 * @port: This parameter specifies the isci_port conected to this device.
 *
 * pointer to new isci_remote_device.
 */
static struct isci_remote_device *
isci_remote_device_alloc(struct isci_host *isci_host, struct isci_port *port)
{
	struct isci_remote_device *isci_device;
	struct scic_sds_remote_device *sci_dev;

	isci_device = kmem_cache_zalloc(isci_kmem_cache, GFP_KERNEL);

	if (!isci_device) {
		dev_warn(&isci_host->pdev->dev, "%s: failed\n", __func__);
		return NULL;
	}

	sci_dev = (struct scic_sds_remote_device *) &isci_device[1];
	isci_device->sci_device_handle = sci_dev;
	INIT_LIST_HEAD(&isci_device->reqs_in_process);
	INIT_LIST_HEAD(&isci_device->node);
	isci_device->host_quiesce          = false;

	spin_lock_init(&isci_device->state_lock);
	spin_lock_init(&isci_device->host_quiesce_lock);
	isci_remote_device_change_state(isci_device, isci_freed);

	return isci_device;

}
/**
 * isci_device_set_host_quiesce_lock_state() - This function sets the host I/O
 *    quiesce lock state for the remote_device object.
 * @isci_device,: This parameter points to the isci_remote_device object
 * @isci_device: This parameter specifies the new quiesce state.
 *
 */
void isci_device_set_host_quiesce_lock_state(
	struct isci_remote_device *isci_device,
	bool lock_state)
{
	unsigned long flags;

	dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
		"%s: isci_device=%p, lock_state=%d\n",
		__func__, isci_device, lock_state);

	spin_lock_irqsave(&isci_device->host_quiesce_lock, flags);
	isci_device->host_quiesce = lock_state;
	spin_unlock_irqrestore(&isci_device->host_quiesce_lock, flags);
}

/**
 * isci_remote_device_ready() - This function is called by the scic when the
 *    remote device is ready. We mark the isci device as ready and signal the
 *    waiting proccess.
 * @isci_host: This parameter specifies the isci host object.
 * @isci_device: This parameter specifies the remote device
 *
 */
void isci_remote_device_ready(struct isci_remote_device *isci_device)
{
	unsigned long flags;

	dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
		"%s: isci_device = %p\n", __func__, isci_device);

	/* device ready is actually a "ready for io" state. */
	if ((isci_starting == isci_remote_device_get_state(isci_device)) ||
	    (isci_ready == isci_remote_device_get_state(isci_device))) {
		spin_lock_irqsave(&isci_device->isci_port->remote_device_lock,
				  flags);
		isci_remote_device_change_state(isci_device, isci_ready_for_io);
		if (isci_device->completion)
			complete(isci_device->completion);
		spin_unlock_irqrestore(
				&isci_device->isci_port->remote_device_lock,
				flags);
	}

}

/**
 * isci_remote_device_not_ready() - This function is called by the scic when
 *    the remote device is not ready. We mark the isci device as ready (not
 *    "ready_for_io") and signal the waiting proccess.
 * @isci_host: This parameter specifies the isci host object.
 * @isci_device: This parameter specifies the remote device
 *
 */
void isci_remote_device_not_ready(
	struct isci_remote_device *isci_device,
	u32 reason_code)
{
	dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
		"%s: isci_device = %p\n", __func__, isci_device);

	if (reason_code == SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED)
		isci_remote_device_change_state(isci_device, isci_stopping);
	else
		/* device ready is actually a "not ready for io" state. */
		isci_remote_device_change_state(isci_device, isci_ready);
}

/**
 * isci_remote_device_stop_complete() - This function is called by the scic
 *    when the remote device stop has completed. We mark the isci device as not
 *    ready and remove the isci remote device.
 * @isci_host: This parameter specifies the isci host object.
 * @isci_device: This parameter specifies the remote device.
 * @status: This parameter specifies status of the completion.
 *
 */
void isci_remote_device_stop_complete(
	struct isci_host *isci_host,
	struct isci_remote_device *isci_device,
	enum sci_status status)
{
	struct completion *completion = isci_device->completion;

	dev_dbg(&isci_host->pdev->dev,
		"%s: complete isci_device = %p, status = 0x%x\n",
		__func__,
		isci_device,
		status);

	isci_remote_device_change_state(isci_device, isci_stopped);

	/* after stop, we can tear down resources. */
	isci_remote_device_deconstruct(isci_host, isci_device);

	/* notify interested parties. */
	if (completion)
		complete(completion);
}

/**
 * isci_remote_device_start_complete() - This function is called by the scic
 *    when the remote device start has completed
 * @isci_host: This parameter specifies the isci host object.
 * @isci_device: This parameter specifies the remote device.
 * @status: This parameter specifies status of the completion.
 *
 */
void isci_remote_device_start_complete(
	struct isci_host *isci_host,
	struct isci_remote_device *isci_device,
	enum sci_status status)
{


}


/**
 * isci_remote_device_stop() - This function is called internally to stop the
 *    remote device.
 * @isci_host: This parameter specifies the isci host object.
 * @isci_device: This parameter specifies the remote device.
 *
 * The status of the scic request to stop.
 */
enum sci_status isci_remote_device_stop(
	struct isci_remote_device *isci_device)
{
	enum sci_status status;
	unsigned long flags;

	DECLARE_COMPLETION_ONSTACK(completion);

	dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
		"%s: isci_device = %p\n", __func__, isci_device);

	isci_remote_device_change_state(isci_device, isci_stopping);

	/* We need comfirmation that stop completed. */
	isci_device->completion = &completion;

	BUG_ON(isci_device->isci_port == NULL);
	BUG_ON(isci_device->isci_port->isci_host == NULL);

	spin_lock_irqsave(&isci_device->isci_port->isci_host->scic_lock, flags);

	status = scic_remote_device_stop(
		isci_device->sci_device_handle,
		50
		);

	spin_unlock_irqrestore(&isci_device->isci_port->isci_host->scic_lock, flags);

	/* Wait for the stop complete callback. */
	if (status == SCI_SUCCESS)
		wait_for_completion(&completion);

	dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
		"%s: isci_device = %p - after completion wait\n",
		__func__, isci_device);

	isci_device->completion = NULL;
	return status;
}

/**
 * isci_remote_device_gone() - This function is called by libsas when a domain
 *    device is removed.
 * @domain_device: This parameter specifies the libsas domain device.
 *
 */
void isci_remote_device_gone(
	struct domain_device *domain_dev)
{
	struct isci_remote_device *isci_device = isci_dev_from_domain_dev(
		domain_dev);

	dev_err(&isci_device->isci_port->isci_host->pdev->dev,
		"%s: domain_device = %p, isci_device = %p, isci_port = %p\n",
		__func__, domain_dev, isci_device, isci_device->isci_port);

	if (isci_device != NULL)
		isci_remote_device_stop(isci_device);
}


/**
 * isci_remote_device_found() - This function is called by libsas when a remote
 *    device is discovered. A remote device object is created and started. the
 *    function then sleeps until the sci core device started message is
 *    received.
 * @domain_device: This parameter specifies the libsas domain device.
 *
 * status, zero indicates success.
 */
int isci_remote_device_found(struct domain_device *domain_dev)
{
	unsigned long flags;
	struct isci_host *isci_host;
	struct isci_port *isci_port;
	struct isci_phy *isci_phy;
	struct asd_sas_port *sas_port;
	struct asd_sas_phy *sas_phy;
	struct isci_remote_device *isci_device;
	enum sci_status status;
	DECLARE_COMPLETION_ONSTACK(completion);

	isci_host = isci_host_from_sas_ha(domain_dev->port->ha);

	dev_dbg(&isci_host->pdev->dev,
		"%s: domain_device = %p\n", __func__, domain_dev);

	sas_port = domain_dev->port;
	sas_phy = list_first_entry(&sas_port->phy_list, struct asd_sas_phy,
				   port_phy_el);
	isci_phy = to_isci_phy(sas_phy);
	isci_port = isci_phy->isci_port;

	/* we are being called for a device on this port,
	 * so it has to come up eventually
	 */
	wait_for_completion(&isci_port->start_complete);

	if ((isci_stopping == isci_port_get_state(isci_port)) ||
	    (isci_stopped == isci_port_get_state(isci_port)))
		return -ENODEV;

	isci_device = isci_remote_device_alloc(isci_host, isci_port);

	INIT_LIST_HEAD(&isci_device->node);
	domain_dev->lldd_dev = isci_device;
	isci_device->domain_dev = domain_dev;
	isci_device->isci_port = isci_port;
	isci_remote_device_change_state(isci_device, isci_starting);


	spin_lock_irqsave(&isci_port->remote_device_lock, flags);
	list_add_tail(&isci_device->node, &isci_port->remote_dev_list);

	/* for the device ready event. */
	isci_device->completion = &completion;

	status = isci_remote_device_construct(isci_port, isci_device);

	spin_unlock_irqrestore(&isci_port->remote_device_lock, flags);

	/* wait for the device ready callback. */
	wait_for_completion(isci_device->completion);
	isci_device->completion = NULL;

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_device = %p\n",
		__func__, isci_device);

	if (status != SCI_SUCCESS) {

		spin_lock_irqsave(&isci_port->remote_device_lock, flags);
		isci_remote_device_deconstruct(
			isci_host,
			isci_device
			);
		spin_unlock_irqrestore(&isci_port->remote_device_lock, flags);
		return -ENODEV;
	}

	wait_for_completion(&isci_host->start_complete);

	return 0;
}
/**
 * isci_device_is_reset_pending() - This function will check if there is any
 *    pending reset condition on the device.
 * @request: This parameter is the isci_device object.
 *
 * true if there is a reset pending for the device.
 */
bool isci_device_is_reset_pending(
	struct isci_host *isci_host,
	struct isci_remote_device *isci_device)
{
	struct isci_request *isci_request;
	struct isci_request *tmp_req;
	bool reset_is_pending = false;
	unsigned long flags;

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_device = %p\n", __func__, isci_device);

	spin_lock_irqsave(&isci_host->scic_lock, flags);

	/* Check for reset on all pending requests. */
	list_for_each_entry_safe(isci_request, tmp_req,
				 &isci_device->reqs_in_process, dev_node) {
		dev_dbg(&isci_host->pdev->dev,
			"%s: isci_device = %p request = %p\n",
			__func__, isci_device, isci_request);

		if (isci_request->ttype == io_task) {

			unsigned long flags;
			struct sas_task *task = isci_request_access_task(
				isci_request);

			spin_lock_irqsave(&task->task_state_lock, flags);
			if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET)
				reset_is_pending = true;
			spin_unlock_irqrestore(&task->task_state_lock, flags);
		}
	}

	spin_unlock_irqrestore(&isci_host->scic_lock, flags);

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_device = %p reset_is_pending = %d\n",
		__func__, isci_device, reset_is_pending);

	return reset_is_pending;
}

/**
 * isci_device_clear_reset_pending() - This function will clear if any pending
 *    reset condition flags on the device.
 * @request: This parameter is the isci_device object.
 *
 * true if there is a reset pending for the device.
 */
void isci_device_clear_reset_pending(struct isci_remote_device *isci_device)
{
	struct isci_request *isci_request;
	struct isci_request *tmp_req;
	struct isci_host *isci_host = NULL;
	unsigned long flags = 0;

	/* FIXME more port gone confusion, and this time it makes the
	 * locking "fun"
	 */
	if (isci_device->isci_port != NULL)
		isci_host = isci_device->isci_port->isci_host;

	/*
	 * FIXME when the isci_host gets sorted out
	 * use dev_dbg()
	 */
	pr_debug("%s: isci_device=%p, isci_host=%p\n",
		 __func__, isci_device, isci_host);

	if (isci_host != NULL)
		spin_lock_irqsave(&isci_host->scic_lock, flags);
	else
		pr_err("%s: isci_device %p; isci_host == NULL!\n",
		       __func__, isci_device);

	/* Clear reset pending on all pending requests. */
	list_for_each_entry_safe(isci_request, tmp_req,
				 &isci_device->reqs_in_process, dev_node) {
		/*
		 * FIXME when the conditional spinlock is gone
		 * change to dev_dbg()
		 */
		pr_debug("%s: isci_device = %p request = %p\n",
			 __func__, isci_device, isci_request);

		if (isci_request->ttype == io_task) {

			unsigned long flags2;
			struct sas_task *task = isci_request_access_task(
				isci_request);

			spin_lock_irqsave(&task->task_state_lock, flags2);
			task->task_state_flags &= ~SAS_TASK_NEED_DEV_RESET;
			spin_unlock_irqrestore(&task->task_state_lock, flags2);
		}
	}

	if (isci_host != NULL)
		spin_unlock_irqrestore(&isci_host->scic_lock, flags);
}

/**
 * isci_remote_device_change_state() - This function gets the status of the
 *    remote_device object.
 * @isci_device: This parameter points to the isci_remote_device object
 *
 * status of the object as a isci_status enum.
 */
void isci_remote_device_change_state(
	struct isci_remote_device *isci_device,
	enum isci_status status)
{
	unsigned long flags;

	dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
		"%s: isci_device = %p, state = 0x%x",
		__func__,
		isci_device,
		status);

	spin_lock_irqsave(&isci_device->state_lock, flags);
	isci_device->status = status;
	spin_unlock_irqrestore(&isci_device->state_lock, flags);
}