On Tue, 6 Feb 2007, Oliver Neukum wrote:

> > With this infrastructure in place, all you have to do is
> > 
> >     set_bit(USB_DF_DEVICE_BUSY, &hid_to_usb_dev(hid)->dflags);
> > 
> > whenever an event occurs.  No messing around with extra timers.
> 
> If you make USB_AUTOSUSPEND_DELAY a per interface variable,
> I'll use this infrastructure.

Okay, I'll do it.  There will also be a per-device delay variable, whose 
value will be settable via sysfs.

The question then becomes, with all those different delay values, what 
delay should the timer actually use?  The simplest answer is to use the 
maximum of the delays.  Does that sound right?

Alan Stern


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