Hi!
> One significant example involves USB mice. If they were to be
> suspended (usb_suspend_device) after a few seconds of inactivity,
> that change could often spread up the device tree and let the
> USB host controller stop DMA access. Some x86 CPUs could
> then enter C3 and save a couple Watts of battery power ... until
> the mouse moved, and woke that branch of the device tree
> for a while (until the mouse went idle again).
How fast is the wakeup? Will not that make mouse jump a bit? (Just curious...)
Pavel
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