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authorGeert Uytterhoeven <geert+renesas@glider.be>2014-03-28 14:15:14 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-04-07 16:18:24 +0400
commitd0549801659747c46092fb22db1488100d7923e4 (patch)
treefa38e3b6e382e20611144164b9f6ed5c154af2a2 /Documentation
parent70f6c087573eeb406252ff8d98f511eb5f71496e (diff)
downloadlinux-d0549801659747c46092fb22db1488100d7923e4.tar.xz
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: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-devices-power46
1 files changed, 30 insertions, 16 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power
index 7dbf96b724ed..676fdf5f2a99 100644
--- a/Documentation/ABI/testing/sysfs-devices-power
+++ b/Documentation/ABI/testing/sysfs-devices-power
@@ -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