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SubjectRe: [PATCH]: In kernel hibernation, suspend to both
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On Wed, 2012-05-09 at 13:40 +0530, Srivatsa S. Bhat wrote:
> > + error = suspend_devices_and_enter(PM_SUSPEND_MEM);
>
>
> I can imagine running into a host of problems here, since the suspend
> sequence is not carried out fully, from the beginning.
>
> For example, this will skip sending out the PM_SUSPEND_PREPARE and the
> PM_POST_SUSPEND notifiers. Worse, we actually send out the
> PM_HIBERNATION_PREPARE
> and PM_POST_HIBERNATION notifiers and then do a suspend instead,
> underneath!
>
> (Similar cases for the rest of the notifiers sent during suspend vs
> hibernation).
>
> Don't we need to handle such things properly, in order to make
> suspend-to-both
> work reliably?

Honest answer - I have absolutely no idea. I've seen the code of
suspend-utils (i.e. user mode stuff) and it seems to me that it does
exactly this. Could be wrong of course, just like many times before.

Rafael?

--
Bojan



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