Linus Torvalds wrote: > On Fri, 1 Dec 2006, Pavel Machek wrote: > > >>>> So it looks like we need this sequence: >>>> >>>> enable_nonboot_cpus() /* INIT */ >>>> finish() /* _WAK */ >>>> device_resume() >>>> >>> Can somebody remind me about this immediately after 2.6.19? >>> >> Remind. But note that freezer is not yet SMP safe... Rafael is working >> on that. >> > > Thanks. > > On the other hand, I really wonder (and suspect) whether the problem isn't > really the freezer or even the kernel resume ordering, but simply an ACPI > internal resume ordering thing. > > Doesn't ACPI have per-device "WAK" calls anyway? Shouldn't we just call > those _individually_ as we walk the device tree (perhaps in the > "early_resume" stage) rather than calling them all in one chunk? > > Linus > _WAK method is system-wide. Individual objects do not have their own resume methods. One way of reordering internal ACPI resume is done in patch series to 7122, I mentioned that earlier. It's possible to resume ACPI devices after execution of _WAK in pm->finish. Alex.
