From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759764AbXGDIjj (ORCPT ); Wed, 4 Jul 2007 04:39:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757409AbXGDIjb (ORCPT ); Wed, 4 Jul 2007 04:39:31 -0400 Received: from smtp-out001.kontent.com ([81.88.40.215]:40285 "EHLO smtp-out.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757299AbXGDIja convert rfc822-to-8bit (ORCPT ); Wed, 4 Jul 2007 04:39:30 -0400 From: Oliver Neukum To: Paul Mackerras Subject: Re: [linux-pm] Re: [PATCH] Remove process freezer from suspend to RAM pathway Date: Wed, 4 Jul 2007 10:39:29 +0200 User-Agent: KMail/1.9.7 Cc: linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Matthew Garrett References: <20070703042916.GA17240@srcf.ucam.org> <200707041011.33279.oliver@neukum.org> <18059.23015.860618.268754@cargo.ozlabs.ibm.com> In-Reply-To: <18059.23015.860618.268754@cargo.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200707041039.30015.oliver@neukum.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Am Mittwoch, 4. Juli 2007 schrieb Paul Mackerras: > Oliver Neukum writes: > > > > 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. > > > > And what happens to that IO? I suspended and lost data is not an > > acceptable behavior. > > It's not lost, it's sitting in RAM, and will be sent out when you > resume. Unfortunately this is not the case. The URB will error out. Oliver