Re: Calling suspend() in halt/restart/shutdown -> not a good idea

From: Pavel Machek
Date: Tue Aug 02 2005 - 09:50:47 EST


Hi!

> >> Why are we calling driver suspend routines in these ? This is _not_
> >
> > Well, reason is that if you remove device_suspend() you'll get
> > emergency hard disk park during powerdown. As harddrives can survive
> > only limited number of emergency stops, that is not a good idea.
>
> Then the practical question is: do we suspend the disk by
> calling device_suspend() for every device. Or do we modify
> the ->shutdown() method for the disk.

The additional data in pm_message_t are usefull, and sharing code
between suspend-to-ram and suspend-to-disk is usefull => option #1...

Pavel
--
Boycott Kodak -- for their patent abuse against Java.
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