linux-kernel - Re: [patch update] Re: [linux-pm] Run-time PM idea (was: Re: [RFC][PATCH 0/2] PM: Rearrange core suspend code)

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Date:	Sat, 13 Jun 2009 14:08:08 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Oliver Neukum <oliver@...kum.org>,
	Linux-pm mailing list <linux-pm@...ts.linux-foundation.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch update] Re: [linux-pm] Run-time PM idea (was: Re:
 [RFC][PATCH 0/2] PM: Rearrange core suspend code)

On Sat, 13 Jun 2009, Rafael J. Wysocki wrote:

> So, the conclusion seems to be that we should break the recurrence
> at the point we find an already active device or a device with no parent and
> let the driver(s) handle the more complicated cases.  Is this correct?

That's right.

> BTW, is __device_release_driver() the right place for blocking the run-time PM
> temporarily during remove?

It is.  And for submitting a delayed autosuspend request afterward; we
may as well try to suspend devices that don't have drivers.

Alan Stern

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