pm runtime and system suspend resume
xiechao.linux at gmail.com
Thu Jun 21 20:48:13 EDT 2012
2012/6/21 Alan Stern <stern at rowland.harvard.edu>:
> On Thu, 21 Jun 2012, chao xie wrote:
>> I check the code, __device_suspend will invoke dev->pm_domain->ops
>> first if dev->pm_domain is not NULL.
>> Taking "suspend" as esample, i can do the following things in the
>> 1. invoke dev->driver->pm->suspend for suspending the device
>> 2. do what we do in dev->pm_domain->ops->runtime_suspend for
>> suspending the surrounded logic, for example, shutdown the phy or
>> So is above implementation fine?
> Yes, that sounds like it will work. Watch out for the case where your
> device is already runtime-suspended when a system suspend occurs.
> Have you read section 6 in Documentation/power/runtime_pm.txt? It is
> related to your question.
I will read the document. Thanks very much.
> Alan Stern
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