Messages in this thread | | | Date | Thu, 5 Oct 2006 16:48:50 -0400 (EDT) | From | Alan Stern <> | Subject | Re: [linux-usb-devel] error to be returned while suspended |
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On Thu, 5 Oct 2006, Oliver Neukum wrote:
> [..] > > > In the general case the idea seems insufficient. If I close my laptop's lid > > > I want all input devices suspended, whether the corresponding files are > > > opened or not. In fact, if I have port level power control I might even > > > want to cut power to them. > > > > That's a separate issue. You were talking about runtime suspend, but > > closing the laptop's lid is a system suspend. > > Why?
Normally people expect that shutting the lid on a laptop will cause it to go to sleep. If you want different behavior, that's okay too...
> If you freeze my batch jobs or make unavailable the servers > running on my laptop I'd be very unhappy. > But I want to make jostling a mouse or other input device safe. Thus > I want them to be suspended without autoresume. We need flexibility.
So you want a mode in which the input devices are suspended without remote wakeup. Remote wakeup settings are configurable via /sys/devices/.../power/wakeup. At this point nobody has settled on a new API for suspending the devices. It's quite possible that different drivers or different buses will use their own individual APIs.
Alan Stern
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