Re: 900af0d breaks some embedded suspend/resume

Pavel Machek
2009-04-28T20:27:53Z

On Sun 2009-04-19 00:44:57, Rafael J. Wysocki wrote:
> On Saturday 18 April 2009, Linus Torvalds wrote:
> >
> > On Sat, 18 Apr 2009, Russell King wrote:
> > >
> > > What I need to be able to do is to suspend most devices on the host side
> > > which may involve talking to a separate microcontroller via I2C to shut
> > > down power to peripherals.
> >
> > I suspect that for cases like this, the simplest thing to do is to just
> > add a marker for "don't mess with my power management, I'm doing
> > everything through sysdev" for the specified devices.
>
> In this particular case, if sysdev was used, there would be no problem, but the
> platform uses a platform device to suspend-resume the i2c controller.
> In principle we could convert it to use a sysdev, but that would be more
> difficult than the last patch I sent IMO (at least to me).
>
> Also, apparently it is not the only platform doing it.

OTOH... if the device is needed in late phases of sleep, sysdev *does*
sound like a way to go. So it would be nice to convert those devices
to sysdevs one day.....
Pavel
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