On Thu, 2007-03-22 at 00:42 -0400, Len Brown wrote:
> Today on system suspend we suspend all devices.
> Today on system resume, we resume all devices.
> In the future we need to recognize that upon system suspend,
> some devices are already suspended.
> We need to remember that, so upon resume we can restove
> them to their suspended state, rather than blindly resuming everything.
On system suspend, we may not want to suspend all devices; we may need
to leave certain devices alone, and only power down the host interface
to them.
Upon system resume, therefore, devices may also *not* need to be
resumed; only the host interface to them powered up again.
We have two devices in the OLPC machine in this class: our screen, and
our wireless, both of which will often/usually be left on while the rest
of the sysetm is suspended.
- Jim
--
Jim Gettys
One Laptop Per Child
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