Re: [PATCH 4/4] USB: export autosuspend delay in sysfs

David Brownell <[email protected]>
Newsgroups gmane.linux.usb.devel
Message-ID <[email protected]>
On Tuesday 27 February 2007 10:47 am, Alan Stern wrote:
> On Mon, 26 Feb 2007, Oliver Neukum wrote:

> The main reason for deprecating power/state was that it did not have the
> necessary expressive power.  Different buses have different sets of power
> states and requirements (sometimes individual devices do too), but
> power/state only allowed for 0, 1, 2, or 3.

It had a few more design botches than that, actually.


> The user has the ability to enable or disable remote wakeup through the 
> power/wakeup attribute.  Suppose for some reason the user has decided to 
> disable remote wakeup -- maybe because he really wants the device to 
> remain suspended. 

Or because remote wakeup really doesn't work from that device, so
that autosuspend may only kick in if it's known the device is unused
(vs just temporarily idle).


> > >                 WE ALWAYS WAKE UP ON DEMAND!
> > 
> > Why? Repeating the assertion doesn't make it any more logical.
> 
> What's illogical about always waking up on demand?

Nothing at all -- right Oliver?



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