2 * drivers/base/power/sysfs.c - sysfs entries for device PM
5 #include <linux/device.h>
6 #include <linux/string.h>
7 #include <linux/export.h>
8 #include <linux/pm_qos.h>
9 #include <linux/pm_runtime.h>
10 #include <linux/atomic.h>
11 #include <linux/jiffies.h>
15 * control - Report/change current runtime PM setting of the device
17 * Runtime power management of a device can be blocked with the help of
18 * this attribute. All devices have one of the following two values for
19 * the power/control file:
21 * + "auto\n" to allow the device to be power managed at run time;
22 * + "on\n" to prevent the device from being power managed at run time;
24 * The default for all devices is "auto", which means that devices may be
25 * subject to automatic power management, depending on their drivers.
26 * Changing this attribute to "on" prevents the driver from power managing
27 * the device at run time. Doing that while the device is suspended causes
30 * wakeup - Report/change current wakeup option for device
32 * Some devices support "wakeup" events, which are hardware signals
33 * used to activate devices from suspended or low power states. Such
34 * devices have one of three values for the sysfs power/wakeup file:
36 * + "enabled\n" to issue the events;
37 * + "disabled\n" not to do so; or
38 * + "\n" for temporary or permanent inability to issue wakeup.
40 * (For example, unconfigured USB devices can't issue wakeups.)
42 * Familiar examples of devices that can issue wakeup events include
43 * keyboards and mice (both PS2 and USB styles), power buttons, modems,
44 * "Wake-On-LAN" Ethernet links, GPIO lines, and more. Some events
45 * will wake the entire system from a suspend state; others may just
46 * wake up the device (if the system as a whole is already active).
47 * Some wakeup events use normal IRQ lines; other use special out
50 * It is the responsibility of device drivers to enable (or disable)
51 * wakeup signaling as part of changing device power states, respecting
52 * the policy choices provided through the driver model.
54 * Devices may not be able to generate wakeup events from all power
55 * states. Also, the events may be ignored in some configurations;
56 * for example, they might need help from other devices that aren't
57 * active, or which may have wakeup disabled. Some drivers rely on
58 * wakeup events internally (unless they are disabled), keeping
59 * their hardware in low power modes whenever they're unused. This
60 * saves runtime power, without requiring system-wide sleep states.
62 * async - Report/change current async suspend setting for the device
64 * Asynchronous suspend and resume of the device during system-wide power
65 * state transitions can be enabled by writing "enabled" to this file.
66 * Analogously, if "disabled" is written to this file, the device will be
67 * suspended and resumed synchronously.
69 * All devices have one of the following two values for power/async:
71 * + "enabled\n" to permit the asynchronous suspend/resume of the device;
72 * + "disabled\n" to forbid it;
74 * NOTE: It generally is unsafe to permit the asynchronous suspend/resume
75 * of a device unless it is certain that all of the PM dependencies of the
76 * device are known to the PM core. However, for some devices this
77 * attribute is set to "enabled" by bus type code or device drivers and in
78 * that cases it should be safe to leave the default value.
80 * autosuspend_delay_ms - Report/change a device's autosuspend_delay value
82 * Some drivers don't want to carry out a runtime suspend as soon as a
83 * device becomes idle; they want it always to remain idle for some period
84 * of time before suspending it. This period is the autosuspend_delay
85 * value (expressed in milliseconds) and it can be controlled by the user.
86 * If the value is negative then the device will never be runtime
89 * NOTE: The autosuspend_delay_ms attribute and the autosuspend_delay
90 * value are used only if the driver calls pm_runtime_use_autosuspend().
92 * wakeup_count - Report the number of wakeup events related to the device
95 const char power_group_name
[] = "power";
96 EXPORT_SYMBOL_GPL(power_group_name
);
98 static const char ctrl_auto
[] = "auto";
99 static const char ctrl_on
[] = "on";
101 static ssize_t
control_show(struct device
*dev
, struct device_attribute
*attr
,
104 return sprintf(buf
, "%s\n",
105 dev
->power
.runtime_auto
? ctrl_auto
: ctrl_on
);
108 static ssize_t
control_store(struct device
* dev
, struct device_attribute
*attr
,
109 const char * buf
, size_t n
)
114 cp
= memchr(buf
, '\n', n
);
118 if (len
== sizeof ctrl_auto
- 1 && strncmp(buf
, ctrl_auto
, len
) == 0)
119 pm_runtime_allow(dev
);
120 else if (len
== sizeof ctrl_on
- 1 && strncmp(buf
, ctrl_on
, len
) == 0)
121 pm_runtime_forbid(dev
);
128 static DEVICE_ATTR(control
, 0644, control_show
, control_store
);
130 static ssize_t
rtpm_active_time_show(struct device
*dev
,
131 struct device_attribute
*attr
, char *buf
)
134 spin_lock_irq(&dev
->power
.lock
);
135 update_pm_runtime_accounting(dev
);
136 ret
= sprintf(buf
, "%i\n", jiffies_to_msecs(dev
->power
.active_jiffies
));
137 spin_unlock_irq(&dev
->power
.lock
);
141 static DEVICE_ATTR(runtime_active_time
, 0444, rtpm_active_time_show
, NULL
);
143 static ssize_t
rtpm_suspended_time_show(struct device
*dev
,
144 struct device_attribute
*attr
, char *buf
)
147 spin_lock_irq(&dev
->power
.lock
);
148 update_pm_runtime_accounting(dev
);
149 ret
= sprintf(buf
, "%i\n",
150 jiffies_to_msecs(dev
->power
.suspended_jiffies
));
151 spin_unlock_irq(&dev
->power
.lock
);
155 static DEVICE_ATTR(runtime_suspended_time
, 0444, rtpm_suspended_time_show
, NULL
);
157 static ssize_t
rtpm_status_show(struct device
*dev
,
158 struct device_attribute
*attr
, char *buf
)
162 if (dev
->power
.runtime_error
) {
164 } else if (dev
->power
.disable_depth
) {
167 switch (dev
->power
.runtime_status
) {
184 return sprintf(buf
, p
);
187 static DEVICE_ATTR(runtime_status
, 0444, rtpm_status_show
, NULL
);
189 static ssize_t
autosuspend_delay_ms_show(struct device
*dev
,
190 struct device_attribute
*attr
, char *buf
)
192 if (!dev
->power
.use_autosuspend
)
194 return sprintf(buf
, "%d\n", dev
->power
.autosuspend_delay
);
197 static ssize_t
autosuspend_delay_ms_store(struct device
*dev
,
198 struct device_attribute
*attr
, const char *buf
, size_t n
)
202 if (!dev
->power
.use_autosuspend
)
205 if (kstrtol(buf
, 10, &delay
) != 0 || delay
!= (int) delay
)
209 pm_runtime_set_autosuspend_delay(dev
, delay
);
214 static DEVICE_ATTR(autosuspend_delay_ms
, 0644, autosuspend_delay_ms_show
,
215 autosuspend_delay_ms_store
);
217 static ssize_t
pm_qos_resume_latency_show(struct device
*dev
,
218 struct device_attribute
*attr
,
221 return sprintf(buf
, "%d\n", dev_pm_qos_requested_resume_latency(dev
));
224 static ssize_t
pm_qos_resume_latency_store(struct device
*dev
,
225 struct device_attribute
*attr
,
226 const char *buf
, size_t n
)
231 if (kstrtos32(buf
, 0, &value
))
237 ret
= dev_pm_qos_update_request(dev
->power
.qos
->resume_latency_req
,
239 return ret
< 0 ? ret
: n
;
242 static DEVICE_ATTR(pm_qos_resume_latency_us
, 0644,
243 pm_qos_resume_latency_show
, pm_qos_resume_latency_store
);
245 static ssize_t
pm_qos_latency_tolerance_show(struct device
*dev
,
246 struct device_attribute
*attr
,
249 s32 value
= dev_pm_qos_get_user_latency_tolerance(dev
);
252 return sprintf(buf
, "auto\n");
253 else if (value
== PM_QOS_LATENCY_ANY
)
254 return sprintf(buf
, "any\n");
256 return sprintf(buf
, "%d\n", value
);
259 static ssize_t
pm_qos_latency_tolerance_store(struct device
*dev
,
260 struct device_attribute
*attr
,
261 const char *buf
, size_t n
)
266 if (kstrtos32(buf
, 0, &value
)) {
267 if (!strcmp(buf
, "auto") || !strcmp(buf
, "auto\n"))
268 value
= PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT
;
269 else if (!strcmp(buf
, "any") || !strcmp(buf
, "any\n"))
270 value
= PM_QOS_LATENCY_ANY
;
272 ret
= dev_pm_qos_update_user_latency_tolerance(dev
, value
);
273 return ret
< 0 ? ret
: n
;
276 static DEVICE_ATTR(pm_qos_latency_tolerance_us
, 0644,
277 pm_qos_latency_tolerance_show
, pm_qos_latency_tolerance_store
);
279 static ssize_t
pm_qos_no_power_off_show(struct device
*dev
,
280 struct device_attribute
*attr
,
283 return sprintf(buf
, "%d\n", !!(dev_pm_qos_requested_flags(dev
)
284 & PM_QOS_FLAG_NO_POWER_OFF
));
287 static ssize_t
pm_qos_no_power_off_store(struct device
*dev
,
288 struct device_attribute
*attr
,
289 const char *buf
, size_t n
)
293 if (kstrtoint(buf
, 0, &ret
))
296 if (ret
!= 0 && ret
!= 1)
299 ret
= dev_pm_qos_update_flags(dev
, PM_QOS_FLAG_NO_POWER_OFF
, ret
);
300 return ret
< 0 ? ret
: n
;
303 static DEVICE_ATTR(pm_qos_no_power_off
, 0644,
304 pm_qos_no_power_off_show
, pm_qos_no_power_off_store
);
306 static ssize_t
pm_qos_remote_wakeup_show(struct device
*dev
,
307 struct device_attribute
*attr
,
310 return sprintf(buf
, "%d\n", !!(dev_pm_qos_requested_flags(dev
)
311 & PM_QOS_FLAG_REMOTE_WAKEUP
));
314 static ssize_t
pm_qos_remote_wakeup_store(struct device
*dev
,
315 struct device_attribute
*attr
,
316 const char *buf
, size_t n
)
320 if (kstrtoint(buf
, 0, &ret
))
323 if (ret
!= 0 && ret
!= 1)
326 ret
= dev_pm_qos_update_flags(dev
, PM_QOS_FLAG_REMOTE_WAKEUP
, ret
);
327 return ret
< 0 ? ret
: n
;
330 static DEVICE_ATTR(pm_qos_remote_wakeup
, 0644,
331 pm_qos_remote_wakeup_show
, pm_qos_remote_wakeup_store
);
333 #ifdef CONFIG_PM_SLEEP
334 static const char _enabled
[] = "enabled";
335 static const char _disabled
[] = "disabled";
338 wake_show(struct device
* dev
, struct device_attribute
*attr
, char * buf
)
340 return sprintf(buf
, "%s\n", device_can_wakeup(dev
)
341 ? (device_may_wakeup(dev
) ? _enabled
: _disabled
)
346 wake_store(struct device
* dev
, struct device_attribute
*attr
,
347 const char * buf
, size_t n
)
352 if (!device_can_wakeup(dev
))
355 cp
= memchr(buf
, '\n', n
);
358 if (len
== sizeof _enabled
- 1
359 && strncmp(buf
, _enabled
, sizeof _enabled
- 1) == 0)
360 device_set_wakeup_enable(dev
, 1);
361 else if (len
== sizeof _disabled
- 1
362 && strncmp(buf
, _disabled
, sizeof _disabled
- 1) == 0)
363 device_set_wakeup_enable(dev
, 0);
369 static DEVICE_ATTR(wakeup
, 0644, wake_show
, wake_store
);
371 static ssize_t
wakeup_count_show(struct device
*dev
,
372 struct device_attribute
*attr
, char *buf
)
374 unsigned long count
= 0;
375 bool enabled
= false;
377 spin_lock_irq(&dev
->power
.lock
);
378 if (dev
->power
.wakeup
) {
379 count
= dev
->power
.wakeup
->event_count
;
382 spin_unlock_irq(&dev
->power
.lock
);
383 return enabled
? sprintf(buf
, "%lu\n", count
) : sprintf(buf
, "\n");
386 static DEVICE_ATTR(wakeup_count
, 0444, wakeup_count_show
, NULL
);
388 static ssize_t
wakeup_active_count_show(struct device
*dev
,
389 struct device_attribute
*attr
, char *buf
)
391 unsigned long count
= 0;
392 bool enabled
= false;
394 spin_lock_irq(&dev
->power
.lock
);
395 if (dev
->power
.wakeup
) {
396 count
= dev
->power
.wakeup
->active_count
;
399 spin_unlock_irq(&dev
->power
.lock
);
400 return enabled
? sprintf(buf
, "%lu\n", count
) : sprintf(buf
, "\n");
403 static DEVICE_ATTR(wakeup_active_count
, 0444, wakeup_active_count_show
, NULL
);
405 static ssize_t
wakeup_abort_count_show(struct device
*dev
,
406 struct device_attribute
*attr
,
409 unsigned long count
= 0;
410 bool enabled
= false;
412 spin_lock_irq(&dev
->power
.lock
);
413 if (dev
->power
.wakeup
) {
414 count
= dev
->power
.wakeup
->wakeup_count
;
417 spin_unlock_irq(&dev
->power
.lock
);
418 return enabled
? sprintf(buf
, "%lu\n", count
) : sprintf(buf
, "\n");
421 static DEVICE_ATTR(wakeup_abort_count
, 0444, wakeup_abort_count_show
, NULL
);
423 static ssize_t
wakeup_expire_count_show(struct device
*dev
,
424 struct device_attribute
*attr
,
427 unsigned long count
= 0;
428 bool enabled
= false;
430 spin_lock_irq(&dev
->power
.lock
);
431 if (dev
->power
.wakeup
) {
432 count
= dev
->power
.wakeup
->expire_count
;
435 spin_unlock_irq(&dev
->power
.lock
);
436 return enabled
? sprintf(buf
, "%lu\n", count
) : sprintf(buf
, "\n");
439 static DEVICE_ATTR(wakeup_expire_count
, 0444, wakeup_expire_count_show
, NULL
);
441 static ssize_t
wakeup_active_show(struct device
*dev
,
442 struct device_attribute
*attr
, char *buf
)
444 unsigned int active
= 0;
445 bool enabled
= false;
447 spin_lock_irq(&dev
->power
.lock
);
448 if (dev
->power
.wakeup
) {
449 active
= dev
->power
.wakeup
->active
;
452 spin_unlock_irq(&dev
->power
.lock
);
453 return enabled
? sprintf(buf
, "%u\n", active
) : sprintf(buf
, "\n");
456 static DEVICE_ATTR(wakeup_active
, 0444, wakeup_active_show
, NULL
);
458 static ssize_t
wakeup_total_time_show(struct device
*dev
,
459 struct device_attribute
*attr
, char *buf
)
462 bool enabled
= false;
464 spin_lock_irq(&dev
->power
.lock
);
465 if (dev
->power
.wakeup
) {
466 msec
= ktime_to_ms(dev
->power
.wakeup
->total_time
);
469 spin_unlock_irq(&dev
->power
.lock
);
470 return enabled
? sprintf(buf
, "%lld\n", msec
) : sprintf(buf
, "\n");
473 static DEVICE_ATTR(wakeup_total_time_ms
, 0444, wakeup_total_time_show
, NULL
);
475 static ssize_t
wakeup_max_time_show(struct device
*dev
,
476 struct device_attribute
*attr
, char *buf
)
479 bool enabled
= false;
481 spin_lock_irq(&dev
->power
.lock
);
482 if (dev
->power
.wakeup
) {
483 msec
= ktime_to_ms(dev
->power
.wakeup
->max_time
);
486 spin_unlock_irq(&dev
->power
.lock
);
487 return enabled
? sprintf(buf
, "%lld\n", msec
) : sprintf(buf
, "\n");
490 static DEVICE_ATTR(wakeup_max_time_ms
, 0444, wakeup_max_time_show
, NULL
);
492 static ssize_t
wakeup_last_time_show(struct device
*dev
,
493 struct device_attribute
*attr
, char *buf
)
496 bool enabled
= false;
498 spin_lock_irq(&dev
->power
.lock
);
499 if (dev
->power
.wakeup
) {
500 msec
= ktime_to_ms(dev
->power
.wakeup
->last_time
);
503 spin_unlock_irq(&dev
->power
.lock
);
504 return enabled
? sprintf(buf
, "%lld\n", msec
) : sprintf(buf
, "\n");
507 static DEVICE_ATTR(wakeup_last_time_ms
, 0444, wakeup_last_time_show
, NULL
);
509 #ifdef CONFIG_PM_AUTOSLEEP
510 static ssize_t
wakeup_prevent_sleep_time_show(struct device
*dev
,
511 struct device_attribute
*attr
,
515 bool enabled
= false;
517 spin_lock_irq(&dev
->power
.lock
);
518 if (dev
->power
.wakeup
) {
519 msec
= ktime_to_ms(dev
->power
.wakeup
->prevent_sleep_time
);
522 spin_unlock_irq(&dev
->power
.lock
);
523 return enabled
? sprintf(buf
, "%lld\n", msec
) : sprintf(buf
, "\n");
526 static DEVICE_ATTR(wakeup_prevent_sleep_time_ms
, 0444,
527 wakeup_prevent_sleep_time_show
, NULL
);
528 #endif /* CONFIG_PM_AUTOSLEEP */
529 #endif /* CONFIG_PM_SLEEP */
531 #ifdef CONFIG_PM_ADVANCED_DEBUG
532 static ssize_t
rtpm_usagecount_show(struct device
*dev
,
533 struct device_attribute
*attr
, char *buf
)
535 return sprintf(buf
, "%d\n", atomic_read(&dev
->power
.usage_count
));
538 static ssize_t
rtpm_children_show(struct device
*dev
,
539 struct device_attribute
*attr
, char *buf
)
541 return sprintf(buf
, "%d\n", dev
->power
.ignore_children
?
542 0 : atomic_read(&dev
->power
.child_count
));
545 static ssize_t
rtpm_enabled_show(struct device
*dev
,
546 struct device_attribute
*attr
, char *buf
)
548 if ((dev
->power
.disable_depth
) && (dev
->power
.runtime_auto
== false))
549 return sprintf(buf
, "disabled & forbidden\n");
550 else if (dev
->power
.disable_depth
)
551 return sprintf(buf
, "disabled\n");
552 else if (dev
->power
.runtime_auto
== false)
553 return sprintf(buf
, "forbidden\n");
554 return sprintf(buf
, "enabled\n");
557 static DEVICE_ATTR(runtime_usage
, 0444, rtpm_usagecount_show
, NULL
);
558 static DEVICE_ATTR(runtime_active_kids
, 0444, rtpm_children_show
, NULL
);
559 static DEVICE_ATTR(runtime_enabled
, 0444, rtpm_enabled_show
, NULL
);
561 #ifdef CONFIG_PM_SLEEP
562 static ssize_t
async_show(struct device
*dev
, struct device_attribute
*attr
,
565 return sprintf(buf
, "%s\n",
566 device_async_suspend_enabled(dev
) ?
567 _enabled
: _disabled
);
570 static ssize_t
async_store(struct device
*dev
, struct device_attribute
*attr
,
571 const char *buf
, size_t n
)
576 cp
= memchr(buf
, '\n', n
);
579 if (len
== sizeof _enabled
- 1 && strncmp(buf
, _enabled
, len
) == 0)
580 device_enable_async_suspend(dev
);
581 else if (len
== sizeof _disabled
- 1 &&
582 strncmp(buf
, _disabled
, len
) == 0)
583 device_disable_async_suspend(dev
);
589 static DEVICE_ATTR(async
, 0644, async_show
, async_store
);
591 #endif /* CONFIG_PM_SLEEP */
592 #endif /* CONFIG_PM_ADVANCED_DEBUG */
594 static struct attribute
*power_attrs
[] = {
595 #ifdef CONFIG_PM_ADVANCED_DEBUG
596 #ifdef CONFIG_PM_SLEEP
597 &dev_attr_async
.attr
,
599 &dev_attr_runtime_status
.attr
,
600 &dev_attr_runtime_usage
.attr
,
601 &dev_attr_runtime_active_kids
.attr
,
602 &dev_attr_runtime_enabled
.attr
,
603 #endif /* CONFIG_PM_ADVANCED_DEBUG */
606 static struct attribute_group pm_attr_group
= {
607 .name
= power_group_name
,
608 .attrs
= power_attrs
,
611 static struct attribute
*wakeup_attrs
[] = {
612 #ifdef CONFIG_PM_SLEEP
613 &dev_attr_wakeup
.attr
,
614 &dev_attr_wakeup_count
.attr
,
615 &dev_attr_wakeup_active_count
.attr
,
616 &dev_attr_wakeup_abort_count
.attr
,
617 &dev_attr_wakeup_expire_count
.attr
,
618 &dev_attr_wakeup_active
.attr
,
619 &dev_attr_wakeup_total_time_ms
.attr
,
620 &dev_attr_wakeup_max_time_ms
.attr
,
621 &dev_attr_wakeup_last_time_ms
.attr
,
622 #ifdef CONFIG_PM_AUTOSLEEP
623 &dev_attr_wakeup_prevent_sleep_time_ms
.attr
,
628 static struct attribute_group pm_wakeup_attr_group
= {
629 .name
= power_group_name
,
630 .attrs
= wakeup_attrs
,
633 static struct attribute
*runtime_attrs
[] = {
634 #ifndef CONFIG_PM_ADVANCED_DEBUG
635 &dev_attr_runtime_status
.attr
,
637 &dev_attr_control
.attr
,
638 &dev_attr_runtime_suspended_time
.attr
,
639 &dev_attr_runtime_active_time
.attr
,
640 &dev_attr_autosuspend_delay_ms
.attr
,
643 static struct attribute_group pm_runtime_attr_group
= {
644 .name
= power_group_name
,
645 .attrs
= runtime_attrs
,
648 static struct attribute
*pm_qos_resume_latency_attrs
[] = {
649 &dev_attr_pm_qos_resume_latency_us
.attr
,
652 static struct attribute_group pm_qos_resume_latency_attr_group
= {
653 .name
= power_group_name
,
654 .attrs
= pm_qos_resume_latency_attrs
,
657 static struct attribute
*pm_qos_latency_tolerance_attrs
[] = {
658 &dev_attr_pm_qos_latency_tolerance_us
.attr
,
661 static struct attribute_group pm_qos_latency_tolerance_attr_group
= {
662 .name
= power_group_name
,
663 .attrs
= pm_qos_latency_tolerance_attrs
,
666 static struct attribute
*pm_qos_flags_attrs
[] = {
667 &dev_attr_pm_qos_no_power_off
.attr
,
668 &dev_attr_pm_qos_remote_wakeup
.attr
,
671 static struct attribute_group pm_qos_flags_attr_group
= {
672 .name
= power_group_name
,
673 .attrs
= pm_qos_flags_attrs
,
676 int dpm_sysfs_add(struct device
*dev
)
680 rc
= sysfs_create_group(&dev
->kobj
, &pm_attr_group
);
684 if (pm_runtime_callbacks_present(dev
)) {
685 rc
= sysfs_merge_group(&dev
->kobj
, &pm_runtime_attr_group
);
689 if (device_can_wakeup(dev
)) {
690 rc
= sysfs_merge_group(&dev
->kobj
, &pm_wakeup_attr_group
);
694 if (dev
->power
.set_latency_tolerance
) {
695 rc
= sysfs_merge_group(&dev
->kobj
,
696 &pm_qos_latency_tolerance_attr_group
);
703 sysfs_unmerge_group(&dev
->kobj
, &pm_wakeup_attr_group
);
705 sysfs_unmerge_group(&dev
->kobj
, &pm_runtime_attr_group
);
707 sysfs_remove_group(&dev
->kobj
, &pm_attr_group
);
711 int wakeup_sysfs_add(struct device
*dev
)
713 return sysfs_merge_group(&dev
->kobj
, &pm_wakeup_attr_group
);
716 void wakeup_sysfs_remove(struct device
*dev
)
718 sysfs_unmerge_group(&dev
->kobj
, &pm_wakeup_attr_group
);
721 int pm_qos_sysfs_add_resume_latency(struct device
*dev
)
723 return sysfs_merge_group(&dev
->kobj
, &pm_qos_resume_latency_attr_group
);
726 void pm_qos_sysfs_remove_resume_latency(struct device
*dev
)
728 sysfs_unmerge_group(&dev
->kobj
, &pm_qos_resume_latency_attr_group
);
731 int pm_qos_sysfs_add_flags(struct device
*dev
)
733 return sysfs_merge_group(&dev
->kobj
, &pm_qos_flags_attr_group
);
736 void pm_qos_sysfs_remove_flags(struct device
*dev
)
738 sysfs_unmerge_group(&dev
->kobj
, &pm_qos_flags_attr_group
);
741 void rpm_sysfs_remove(struct device
*dev
)
743 sysfs_unmerge_group(&dev
->kobj
, &pm_runtime_attr_group
);
746 void dpm_sysfs_remove(struct device
*dev
)
748 sysfs_unmerge_group(&dev
->kobj
, &pm_qos_latency_tolerance_attr_group
);
749 dev_pm_qos_constraints_destroy(dev
);
750 rpm_sysfs_remove(dev
);
751 sysfs_unmerge_group(&dev
->kobj
, &pm_wakeup_attr_group
);
752 sysfs_remove_group(&dev
->kobj
, &pm_attr_group
);