From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759702AbXGDI17 (ORCPT ); Wed, 4 Jul 2007 04:27:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756432AbXGDI1v (ORCPT ); Wed, 4 Jul 2007 04:27:51 -0400 Received: from ozlabs.org ([203.10.76.45]:56608 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755942AbXGDI1u convert rfc822-to-8bit (ORCPT ); Wed, 4 Jul 2007 04:27:50 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Message-ID: <18059.23015.860618.268754@cargo.ozlabs.ibm.com> Date: Wed, 4 Jul 2007 18:27:19 +1000 From: Paul Mackerras To: Oliver Neukum Cc: linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Matthew Garrett Subject: Re: [linux-pm] Re: [PATCH] Remove process freezer from suspend to RAM pathway In-Reply-To: <200707041011.33279.oliver@neukum.org> References: <20070703042916.GA17240@srcf.ucam.org> <200707031342.14295.oliver@neukum.org> <18058.55215.185633.434117@cargo.ozlabs.ibm.com> <200707041011.33279.oliver@neukum.org> X-Mailer: VM 7.19 under Emacs 21.4.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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. Paul.