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PM / runtime: Document new pm_runtime_set_suspended() constraint 

Since commit a8636c8964 (PM / Runtime: Don't allow to suspend a
device with an active child) it is no longer permitted to set
RPM_SUSPENDED state for a device with active children unless
power.ignore_children is set.

Update the documentation to reflect this.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Johan Hovold 2017-07-24 11:53:56 +02:00 committed by Rafael J. Wysocki
parent 520eccdfe1
commit c3bf5bb521
1 changed files with 2 additions and 1 deletions
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Documentation/power/runtime_pm.txt
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@ -435,7 +435,8 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
PM status to 'suspended' and update its parent's counter of 'active'
children as appropriate (it is only valid to use this function if
'power.runtime_error' is set or 'power.disable_depth' is greater than
zero)
zero); it will fail and return an error code if the device has a child
which is active and the 'power.ignore_children' flag is unset
bool pm_runtime_active(struct device *dev);
- return true if the device's runtime PM status is 'active' or its