swsusp for ppc440

[Hiroyuki Machida]

Today I worked for enabling swsusp for ppc440, at 2.6.12.
I wrote changes for arch/ppc/kernel/swsusp.S, however
kernel is stopped, before hibernation is taken place
with following messages.

	# echo disk > state
	PM: prepare: Attempting to freeze processes.
	Stopping tasks: ===|
	Freeing memory... done (0 pages freed)
	PM: prepare: OK.
	ide-disk 0.0: suspending
	serial8250 serial8250: suspending
	
	 .. nothing happen
	
It seems to be stopped at console device.
Do anyone point out where and how to exclude system devices
like console and swap from device suspend procedure as 
preparation of swsusp?

Thanks,
Hiroyuki Machida