Messages in this thread | | | Subject | Re: Calling suspend() in halt/restart/shutdown -> not a good idea | From | Benjamin Herrenschmidt <> | Date | Wed, 03 Aug 2005 13:43:27 +0200 |
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On Tue, 2005-08-02 at 16:45 +0200, Pavel Machek wrote: > 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...
No.
Ben.
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