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Date: Sat, 31 Mar 2007 10:08:56 -0700
From: Greg KH <gregkh@suse.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
       Maxim Levitsky <maximlevitsky@gmail.com>,
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Subject: Re: [PATCH v2] Add suspend/resume for HPET
Message-ID: <20070331170856.GA14959@suse.de>
References: <Pine.LNX.4.64.0703160925270.26106@woody.linux-foundation.org> <460BBD1B.4040308@ru.mvista.com> <200703291531.18253.maximlevitsky@gmail.com> <200703291546.48996.maximlevitsky@gmail.com> <1175356272.28263.27.camel@localhost.localdomain> <Pine.LNX.4.64.0703310908160.6730@woody.linux-foundation.org> <1175358800.28263.36.camel@localhost.localdomain> <Pine.LNX.4.64.0703310943190.6730@woody.linux-foundation.org>
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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