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    SubjectRe: [suspend/resume] Re: userspace notification from module
    On Sun 2010-01-17 13:26:18, Russell King - ARM Linux wrote:
    > On Sun, Jan 17, 2010 at 02:07:39PM +0100, Pavel Machek wrote:
    > > AFAICT following message would be nice.
    > >
    > > 1) battery is critical, userspace please do something
    > >
    > > On zaurus and similar, you could add
    > >
    > > 2) oh and btw we had power failure so we suspended (or maybe -- so
    > > hardware suspended itself -- rmk's examples and old apm systems); we
    > > are now back and running
    > >
    > > notification... but... ideally those power failures should never
    > > happen anyway, so... having this notification is in no way neccessary.
    >
    > There's another consideration here: the more complex the emergency
    > procedure, the higher the chance of _something_ causing it to fail,
    > and if it does fail, the result is data loss.

    That's why I propose to only send notification after we resume from
    emergency suspend :-).

    > In a properly running system, this isn't something that's going to
    > get a lot of testing, so there's a higher chance that there will be
    > bugs, so the simpler the solution, the better.

    Unfortunately, with old battery in zaurus, I tested it rather a lot. I
    have new one now, but I can still use old one for testing.
    Pavel
    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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