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Commit d0549801 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Rafael J. Wysocki
Browse files

PM / wakeup: Correct presence vs. emptiness of wakeup_* attributes 



According to the documentation, the various wakeup_* attributes in sysfs
are not present if the device is not enabled to wake up the system.

This is not correct: the attributes are not present if the device is not
capable to wake up the system. They are empty if the device is not enabled
to wake up the system.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 70f6c087

Documentation/ABI/testing/sysfs-devices-power

+30 −16
Original line number Diff line number Diff line
@@ -83,8 +83,10 @@ Contact: Rafael J. Wysocki <rjw@rjwysocki.net> 
Description:

		The /sys/devices/.../wakeup_count attribute contains the number

		of signaled wakeup events associated with the device.  This

		attribute is read-only.  If the device is not enabled to wake up

		attribute is read-only.  If the device is not capable to wake up

		the system from sleep states, this attribute is not present.

		If the device is not enabled to wake up the system from sleep

		states, this attribute is empty.



What:		/sys/devices/.../power/wakeup_active_count

Date:		September 2010
@@ -93,8 +95,10 @@ Description: 
		The /sys/devices/.../wakeup_active_count attribute contains the

		number of times the processing of wakeup events associated with

		the device was completed (at the kernel level).  This attribute

		is read-only.  If the device is not enabled to wake up the

		system from sleep states, this attribute is not present.

		is read-only.  If the device is not capable to wake up the

		system from sleep states, this attribute is not present.  If

		the device is not enabled to wake up the system from sleep

		states, this attribute is empty.



What:		/sys/devices/.../power/wakeup_abort_count

Date:		February 2012
@@ -104,8 +108,9 @@ Description: 
		number of times the processing of a wakeup event associated with

		the device might have aborted system transition into a sleep

		state in progress.  This attribute is read-only.  If the device

		is not enabled to wake up the system from sleep states, this

		attribute is not present.

		is not capable to wake up the system from sleep states, this

		attribute is not present.  If the device is not enabled to wake

		up the system from sleep states, this attribute is empty.



What:		/sys/devices/.../power/wakeup_expire_count

Date:		February 2012
@@ -114,8 +119,10 @@ Description: 
		The /sys/devices/.../wakeup_expire_count attribute contains the

		number of times a wakeup event associated with the device has

		been reported with a timeout that expired.  This attribute is

		read-only.  If the device is not enabled to wake up the system

		from sleep states, this attribute is not present.

		read-only.  If the device is not capable to wake up the system

		from sleep states, this attribute is not present.  If the

		device is not enabled to wake up the system from sleep states,

		this attribute is empty.



What:		/sys/devices/.../power/wakeup_active

Date:		September 2010
@@ -124,8 +131,10 @@ Description: 
		The /sys/devices/.../wakeup_active attribute contains either 1,

		or 0, depending on whether or not a wakeup event associated with

		the device is being processed (1).  This attribute is read-only.

		If the device is not enabled to wake up the system from sleep

		states, this attribute is not present.

		If the device is not capable to wake up the system from sleep

		states, this attribute is not present.  If the device is not

		enabled to wake up the system from sleep states, this attribute

		is empty.



What:		/sys/devices/.../power/wakeup_total_time_ms

Date:		September 2010
@@ -134,8 +143,9 @@ Description: 
		The /sys/devices/.../wakeup_total_time_ms attribute contains

		the total time of processing wakeup events associated with the

		device, in milliseconds.  This attribute is read-only.  If the

		device is not enabled to wake up the system from sleep states,

		this attribute is not present.

		device is not capable to wake up the system from sleep states,

		this attribute is not present.  If the device is not enabled to

		wake up the system from sleep states, this attribute is empty.



What:		/sys/devices/.../power/wakeup_max_time_ms

Date:		September 2010
@@ -144,8 +154,10 @@ Description: 
		The /sys/devices/.../wakeup_max_time_ms attribute contains

		the maximum time of processing a single wakeup event associated

		with the device, in milliseconds.  This attribute is read-only.

		If the device is not enabled to wake up the system from sleep

		states, this attribute is not present.

		If the device is not capable to wake up the system from sleep

		states, this attribute is not present.  If the device is not

		enabled to wake up the system from sleep states, this attribute

		is empty.



What:		/sys/devices/.../power/wakeup_last_time_ms

Date:		September 2010
@@ -156,7 +168,8 @@ Description: 
		signaling the last wakeup event associated with the device, in

		milliseconds.  This attribute is read-only.  If the device is

		not enabled to wake up the system from sleep states, this

		attribute is not present.

		attribute is not present.  If the device is not enabled to wake

		up the system from sleep states, this attribute is empty.



What:		/sys/devices/.../power/wakeup_prevent_sleep_time_ms

Date:		February 2012
@@ -165,9 +178,10 @@ Description: 
		The /sys/devices/.../wakeup_prevent_sleep_time_ms attribute

		contains the total time the device has been preventing

		opportunistic transitions to sleep states from occurring.

		This attribute is read-only.  If the device is not enabled to

		This attribute is read-only.  If the device is not capable to

		wake up the system from sleep states, this attribute is not

		present.

		present.  If the device is not enabled to wake up the system

		from sleep states, this attribute is empty.



What:		/sys/devices/.../power/autosuspend_delay_ms

Date:		September 2010