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

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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Follow-Ups:
- Re: Calling suspend() in halt/restart/shutdown -> not a good idea
  - From: Benjamin Herrenschmidt <[email protected]>

References:
- Calling suspend() in halt/restart/shutdown -> not a good idea
  - From: Benjamin Herrenschmidt <[email protected]>
- Re: Calling suspend() in halt/restart/shutdown -> not a good idea
  - From: Pavel Machek <[email protected]>
- Re: Calling suspend() in halt/restart/shutdown -> not a good idea
  - From: [email protected] (Eric W. Biederman)

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