Re: PATCH/RFC: driver model/pmcore wakeup hooks (0/4)

[Pavel Machek]

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
-- 
64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms         

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