Messages in this thread | | | Date | Tue, 5 Oct 2004 21:32:39 +0200 | From | Pavel Machek <> | Subject | Re: PATCH/RFC: driver model/pmcore wakeup hooks (0/4) |
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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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