On Friday, March 28, 2014 11:15:14 AM Geert Uytterhoeven wrote:
> From: Geert Uytterhoeven <geert+rene...@glider.be>
> 
> 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+rene...@glider.be>

Queued up for the next PM pull request, thanks!

> ---
>  Documentation/ABI/testing/sysfs-devices-power |   46 
> ++++++++++++++++---------
>  1 file changed, 30 insertions(+), 16 deletions(-)
> 
> diff --git a/Documentation/ABI/testing/sysfs-devices-power 
> b/Documentation/ABI/testing/sysfs-devices-power
> index efe449bdf811..39b7b39b352e 100644
> --- a/Documentation/ABI/testing/sysfs-devices-power
> +++ b/Documentation/ABI/testing/sysfs-devices-power
> @@ -83,8 +83,10 @@ Contact:   Rafael J. Wysocki <r...@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
> 

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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