From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Re: [linux-pm] [RFC][PATCH] PM: Introduce new top level =?iso-8859-1?q?suspend=09and_hibernation_callbacks?= (rev. 2) Date: Tue, 25 Mar 2008 21:49:36 +0100 Message-ID: <200803252149.37552.oliver@neukum.org> References: <200803252048.43792.oliver@neukum.org> <200803252141.49049.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from smtp-out003.kontent.com ([81.88.40.217]:54681 "EHLO smtp-out003.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750816AbYCYUti convert rfc822-to-8bit (ORCPT ); Tue, 25 Mar 2008 16:49:38 -0400 In-Reply-To: <200803252141.49049.rjw@sisk.pl> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Rafael J. Wysocki" Cc: Alan Stern , ACPI Devel Maling List , linux-pm@lists.linux-foundation.org, Alexey Starikovskiy , Johannes Berg , LKML Am Dienstag, 25. M=E4rz 2008 21:41:48 schrieb Rafael J. Wysocki: > On Tuesday, 25 of March 2008, Oliver Neukum wrote: > > Am Dienstag, 25. M=E4rz 2008 15:33:22 schrieb Alan Stern: > > > > so I'd say a > > > > failure to resume is just a limited subcase of a device vanishi= ng during > > > > sleep. > > >=20 > > > I'll go along with that. =A0If a device vanishes during sleep, th= e PM=20 > > > core isn't responsible for unregistering it -- the device's subsy= stem=20 > > > is. > >=20 > > Yes, that makes sense. You are right. >=20 > Still, if ->resume() returns an error, does it make sense, from the P= M core's > point of view, to execute ->complete() for that device, for example? IMO you must always keep the ordering invariant. If a parent returns an= error the PM core must not wake its children. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758276AbYCYUtq (ORCPT ); Tue, 25 Mar 2008 16:49:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751281AbYCYUtj (ORCPT ); Tue, 25 Mar 2008 16:49:39 -0400 Received: from smtp-out003.kontent.com ([81.88.40.217]:54681 "EHLO smtp-out003.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750816AbYCYUti convert rfc822-to-8bit (ORCPT ); Tue, 25 Mar 2008 16:49:38 -0400 From: Oliver Neukum Organization: Novell To: "Rafael J. Wysocki" Subject: Re: [linux-pm] [RFC][PATCH] PM: Introduce new top level =?iso-8859-1?q?suspend=09and_hibernation_callbacks?= (rev. 2) Date: Tue, 25 Mar 2008 21:49:36 +0100 User-Agent: KMail/1.9.6 (enterprise 20070904.708012) Cc: Alan Stern , ACPI Devel Maling List , linux-pm@lists.linux-foundation.org, Alexey Starikovskiy , Johannes Berg , LKML References: <200803252048.43792.oliver@neukum.org> <200803252141.49049.rjw@sisk.pl> In-Reply-To: <200803252141.49049.rjw@sisk.pl> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200803252149.37552.oliver@neukum.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Dienstag, 25. März 2008 21:41:48 schrieb Rafael J. Wysocki: > On Tuesday, 25 of March 2008, Oliver Neukum wrote: > > Am Dienstag, 25. März 2008 15:33:22 schrieb Alan Stern: > > > > so I'd say a > > > > failure to resume is just a limited subcase of a device vanishing during > > > > sleep. > > > > > > I'll go along with that.  If a device vanishes during sleep, the PM > > > core isn't responsible for unregistering it -- the device's subsystem > > > is. > > > > Yes, that makes sense. You are right. > > Still, if ->resume() returns an error, does it make sense, from the PM core's > point of view, to execute ->complete() for that device, for example? IMO you must always keep the ordering invariant. If a parent returns an error the PM core must not wake its children. Regards Oliver