"Rafael J. Wysocki" [off-list ref] writes:
From: Rafael J. Wysocki <redacted>
Make generic PM domains support system-wide power transitions
(system suspend and hibernation). Add suspend, resume, freeze, thaw,
poweroff and restore callbacks to be associated with struct
generic_pm_domain objects and make pm_genpd_init() use them as
appropriate.
The new callbacks do nothing for devices belonging to power domains
that were powered down at run time (before the transition).
Great, this is the approach I prefer too, but...
Now I'm confused. Leaving runtime suspended devices alone is what I was
doing in my subsystem but was told not to. According to
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg50690.html
"it's generally agreed that _all_ devices should return to full
power during system resume -- even if they were runtime suspended
before the system sleep."
Kevin