On Tue, 23 Jan 2007, David Brownell wrote:
> On Tuesday 23 January 2007 10:29 am, Alan Stern wrote:
> > On Tue, 23 Jan 2007, David Brownell wrote:
> >
> > > On Tuesday 23 January 2007 3:45 am, Oliver Neukum wrote:
> > > \
> > > > @@ -185,6 +218,8 @@
> > > > usb_descriptor_attr(bMaxPacketSize0, "%d\n")
> > > >
> > > > static struct attribute *dev_attrs[] = {
> > > > + /* power management attributes */
> > > > + &dev_attr_autosuspend.attr,
> > >
> > > Belongs in /sys/devices/.../power/... then, right?
> >
> > That was my thought as well. However I don't know how you would do it,
> > since the PM core owns the "power" attribute group. There doesn't appear
> > to be any way to add sysfs files to a group after it has been created.
>
> Doesn't need to be part of a group ...
Yes it does -- because /sys/devices/.../power/ is a group!
> > I suppose the whole may_suspend thing could be moved into the PM core, but
> > that seems a little drastic considering that only USB implements it.
>
> You mean the whole autosuspend infrastructure thing. Might be worth
> raising that issue on the PM list. Eventually I see no reason that
> most devices shouldn't autosuspend, but not many folk are paying any
> attention to runtime PM at this point ...
I have had in mind all along that eventually the autosuspend
infrastructure should move (at least in part) into the PM core. However
USB seemed like a very good proving ground for a first pass, and to go by
the number of problems people seem to be having, it isn't quite yet ready
for prime time.
Alan Stern
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