Re: [RFC] New Driver Model for 2.5
Jonathan Lundell (jlundell@pobox.com)
Thu, 18 Oct 2001 09:52:15 -0700
At 11:08 AM -0500 10/18/01, Taral wrote:
>On Wed, Oct 17, 2001 at 04:52:29PM -0700, Patrick Mochel wrote:
>> When a suspend transition is triggered, the device tree is walked first to
>> save the state of all the devices in the system. Once this is complete, the
>> saved state, now residing in memory, can be written to some non-volatile
>> location, like a disk partition or network location.
>>
>> The device tree is then walked again to suspend all of the devices. This
>> guarantees that the device controlling the location to write the state is
>> still powered on while you have a snapshot of the system state.
>
>Aha! A much nicer solution to the problem the ACPI people are having
>with suspend/resume (ordering problems).
What happens to state changes between the first and second traversal
of the device tree?
--
/Jonathan Lundell.
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