Re: [PATCH v2] Add suspend/resume for HPET

Greg KH
2007-03-31T17:08:56Z

On Sat, Mar 31, 2007 at 09:53:43AM -0700, Linus Torvalds wrote:
> Make them be at the top of the device tree by adding them early. That's
> the whole point of the device tree after all - we have an ordering that is
> enforced by its topology, and that we sort by when things were added.
>
> Right now the way things work is (iirc - somebody like Greg should
> double-check me) is that we add all devices to the power list at
> device_add() time by traversing the devices fromt he root all the way out,
> and doing a device_add() which does a device_pm_add(), which in turn adds
> it to the power-management list - so that the list is always topologically
> sorted.

Yes, this is how it works (or if not, then there's a bug that needs to
be fixed, as that is how it _should_ work...)

thanks,

greg k-h