PM / runtime: Document autosuspend-helper side effects
authorJohan Hovold <johan@kernel.org>
Mon, 10 Apr 2017 11:38:25 +0000 (13:38 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 19 Apr 2017 21:29:18 +0000 (23:29 +0200)
commitbafdcde73be7d462129cecfc339d3a6abcba91d2
tree397c5bb357399f8d38236d9fde77ed856a2f0dac
parent72ec2e17f9f7f7f6082ec57183080726eb3523e3
PM / runtime: Document autosuspend-helper side effects

Document the fact that the autosuspend delay and enable helpers may
change the power.usage_count and resume or suspend a device depending on
the values of power.autosuspend_delay and power.use_autosuspend.

Note that this means that a driver must disable autosuspend before
disabling runtime pm on probe errors and on driver unbind if the device
is to be suspended upon return (as a negative delay may otherwise keep
the device resumed).

Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Documentation/power/runtime_pm.txt