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Message-ID: <Pine.LNX.4.44L0.0707041042590.25704-100000@netrider.rowland.org>
Date: Wed, 4 Jul 2007 10:44:22 -0400 (EDT)
From: Alan Stern <stern@...land.harvard.edu>
To: Paul Mackerras <paulus@...ba.org>
cc: Oliver Neukum <oliver@...kum.org>,
Matthew Garrett <mjg59@...f.ucam.org>,
<linux-pm@...ts.linux-foundation.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [linux-pm] Re: [PATCH] Remove process freezer from suspend to
RAM pathway
On Wed, 4 Jul 2007, Paul Mackerras wrote:
> Oliver Neukum writes:
>
> > USB devices certainly have suspend methods.
>
> Indeed, and the USB framework has code to know when the host
> controller is suspended and avoid trying to send out urbs in that
> case. Or at least it did last time I looked at it in any detail; it's
> been "just working" - including suspending and resuming, without the
> freezer - for quite a while now.
Evidently you haven't been stressing it. You might try suspending
while printing to a USB printer.
Alan Stern
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