From: Oliver Neukum <oliver@neukum.org>
To: linux-pm@lists.linux-foundation.org
Subject: Re: Runtime resume of children
Date: Wed, 25 Nov 2009 10:41:14 +0100 [thread overview]
Message-ID: <200911251041.14222.oliver@neukum.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0911231556500.2958-100000@iolanthe.rowland.org>
Am Montag, 23. November 2009 21:59:12 schrieb Alan Stern:
> On Mon, 23 Nov 2009, Rafael J. Wysocki wrote:
> > On Sunday 22 November 2009, Alan Stern wrote:
> > > Rafael:
> > >
> > > Here's the situation. Device A has children B1, ..., Bn (possibly
> > > others too). I need to guarantee that whenever A is active, so are the
> > > children.
> >
> >
> > But it's perfectly valid to have an inactive device under an active
> > parent, so I guess this is not a general case.
>
> Correct. It's a specific case that I need to handle for USB.
Hm. In which way is this different from a system where devices
share clock lines? It seems to me that groups of devices that
can be suspended only together are not rare. That in USB these
devices happen to be all a device's interfaces does not really
matter.
Regards
Oliver
next prev parent reply other threads:[~2009-11-25 9:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-22 22:13 Runtime resume of children Alan Stern
2009-11-23 20:44 ` Rafael J. Wysocki
2009-11-23 20:59 ` Alan Stern
2009-11-23 22:11 ` Rafael J. Wysocki
2009-11-25 9:41 ` Oliver Neukum [this message]
2009-11-25 20:46 ` Alan Stern
2009-11-26 16:47 ` Oliver Neukum
2009-11-27 13:20 ` Mark Brown
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