On Sun, Jul 15, 2007 at 08:07:01PM -0700, David Brownell wrote:
> On Sunday 15 July 2007, Dave Jones wrote:
>
> > Before I dig deeper, are there other side-effects of changing
> > this default ?
>
> Other than spending more power than necessary? :)
>
> I don't think there should be, but Alan's most on top of these
> particular issues. The main thing I'd worry about is root hubs,
> which may be performing undesirable periodic DMAs (1/msec or more
> often) if they aren't allowed to suspend their downstream links.
> (Called, misleadingly, "global" suspend even though it's limited
> to a single USB bus.)
Would this be any different from the status quo of having
CONFIG_USB_SUSPEND not set though ? We've had this disabled until
now, without notable bad effects (or at least, nothing that we've
attributed to having this off).
> I think we've been finding out a consequence of Microsoft's rarely
> using the USB suspend mode: devices don't get tested with it, so
> many of them don't support it correctly.
I'm shocked ;-)
Dave
--
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