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authorJohan Hovold <johan@kernel.org>2017-07-24 12:53:56 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-07-28 00:57:40 +0300
commitc3bf5bb521907e7b5a574ae7a2734df3acb11c2f (patch)
tree7099c47d625414db7521b73a0e0ed5624cc3cd1b /Documentation/power
parent520eccdfe187591a51ea9ab4c1a024ae4d0f68d9 (diff)
downloadlinux-c3bf5bb521907e7b5a574ae7a2734df3acb11c2f.tar.xz
PM / runtime: Document new pm_runtime_set_suspended() constraint
Since commit a8636c89648a (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>
Diffstat (limited to 'Documentation/power')
-rw-r--r--Documentation/power/runtime_pm.txt3
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt
index 0fde3dcf077a..625549d4c74a 100644
--- a/Documentation/power/runtime_pm.txt
+++ b/Documentation/power/runtime_pm.txt
@@ -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