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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-10-13 15:27:24 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-10-14 01:04:31 +0200
commit20f97caf1120bd02e8ff4adbad3b44b63626feb5 (patch)
tree912606c83b2114768f565c8890de7b267f9e960a /Documentation/power
parent8a5776a5f49812d29fe4b2d0a2d71675c3facf3f (diff)
downloadlinux-20f97caf1120bd02e8ff4adbad3b44b63626feb5.tar.bz2
PM / QoS: Drop PM_QOS_FLAG_REMOTE_WAKEUP
The PM QoS flag PM_QOS_FLAG_REMOTE_WAKEUP is not used consistently and the vast majority of code simply assumes that remote wakeup should be enabled for devices in runtime suspend if they can generate wakeup signals, so drop it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'Documentation/power')
-rw-r--r--Documentation/power/pm_qos_interface.txt13
1 files changed, 6 insertions, 7 deletions
diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt
index 21d2d48f87a2..19c5f7b1a7ba 100644
--- a/Documentation/power/pm_qos_interface.txt
+++ b/Documentation/power/pm_qos_interface.txt
@@ -98,8 +98,7 @@ Values are updated in response to changes of the request list.
The target values of resume latency and active state latency tolerance are
simply the minimum of the request values held in the parameter list elements.
The PM QoS flags aggregate value is a gather (bitwise OR) of all list elements'
-values. Two device PM QoS flags are defined currently: PM_QOS_FLAG_NO_POWER_OFF
-and PM_QOS_FLAG_REMOTE_WAKEUP.
+values. One device PM QoS flag is defined currently: PM_QOS_FLAG_NO_POWER_OFF.
Note: The aggregated target values are implemented in such a way that reading
the aggregated value does not require any locking mechanism.
@@ -153,14 +152,14 @@ PM QoS list of resume latency constraints and remove sysfs attribute
pm_qos_resume_latency_us from the device's power directory.
int dev_pm_qos_expose_flags(device, value)
-Add a request to the device's PM QoS list of flags and create sysfs attributes
-pm_qos_no_power_off and pm_qos_remote_wakeup under the device's power directory
-allowing user space to change these flags' value.
+Add a request to the device's PM QoS list of flags and create sysfs attribute
+pm_qos_no_power_off under the device's power directory allowing user space to
+change the value of the PM_QOS_FLAG_NO_POWER_OFF flag.
void dev_pm_qos_hide_flags(device)
Drop the request added by dev_pm_qos_expose_flags() from the device's PM QoS list
-of flags and remove sysfs attributes pm_qos_no_power_off and pm_qos_remote_wakeup
-under the device's power directory.
+of flags and remove sysfs attribute pm_qos_no_power_off from the device's power
+directory.
Notification mechanisms:
The per-device PM QoS framework has a per-device notification tree.