PowerMac: force only suspend-to-disk to be valid

[Andrew Morton]

Andrew Morton <akpm at osdl.org> wrote:
>
> > > +static int pmac_pm_valid(suspend_state_t state)
>  > > +{
>  > > +	switch (state) {
>  > > +	case PM_SUSPEND_DISK:
>  > > +		return 1;
>  > > +	/* can't do any other states via generic mechanism yet */
>  > > +	default:
>  > > +		return 0;
>  > > +	}
>  > > +}
>  > > +
>  > >  static struct pm_ops pmac_pm_ops = {
>  > >  	.pm_disk_mode	= PM_DISK_SHUTDOWN,
>  > >  	.prepare	= pmac_pm_prepare,
>  > >  	.enter		= pmac_pm_enter,
>  > >  	.finish		= pmac_pm_finish,
>  > > +	.valid		= pmac_pm_valid,
>  > >  };
>  > >  
>  > >  #endif /* CONFIG_SOFTWARE_SUSPEND */
>  > 
> 
>  It looks like a 2.6.17 patch to me.  If someone wants to send it over with
>  changelog, signed-off-by, etc I can take care of it.
> 

Please also explain whether this fix is needed in 2.6.16.x.