Am Sonntag, 11. April 2010 20:40:02 schrieb Bruno Prémont:
quoted text
> On Sun, 11 April 2010 Jiri Kosina <jkosina@suse.cz> wrote:
> > > As far as I understand the code, in auto-suspend case if the driver 
> > > sends commands to the device it will have to call usbhid_wait_io(). 
> > > Please correct me if I'm wrong!
> > 
> > It's not needed. There is a queuing mechanism in place on 
> > 'resumption_waker' workqueue.
> 
> So the driver is not allowed to ask the device to do something
> at auto-suspend time (as that would abort the auto-suspension).

From within suspend()?

Generally if the driver wants to talk to a device that's a good
reason to wake up a device.

	Regards
		Oliver
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