From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754241Ab3KECjP (ORCPT ); Mon, 4 Nov 2013 21:39:15 -0500 Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120]:35092 "EHLO cdptpa-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754185Ab3KECjL (ORCPT ); Mon, 4 Nov 2013 21:39:11 -0500 X-Authority-Analysis: v=2.0 cv=KJLY/S5o c=1 sm=0 a=3SewDSjaRW4vdJyuxQ33ZQ==:17 a=DeBnktw0k-IA:10 a=AizhB-pfR1kA:10 a=knnhOU_jrMgA:10 a=S1A5HrydsesA:10 a=IkcTkHD0fZMA:10 a=fxJcL_dCAAAA:8 a=KGjhK52YXX0A:10 a=qoLslf_BdD4A:10 a=QfKxxUxMAAAA:8 a=z9AJbDmSy-eY_1qqa8cA:9 a=QEXdDO2ut3YA:10 a=3SewDSjaRW4vdJyuxQ33ZQ==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 72.238.73.171 Message-ID: <52785A4E.7080006@ubuntu.com> Date: Mon, 04 Nov 2013 21:39:10 -0500 From: Phillip Susi User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Aaron Lu , linux-scsi@vger.kernel.org CC: linux-kernel@vger.kernel.org, "linux-ide@vger.kernel.org" , Tejun Heo , Robert Hancock Subject: Re: [PATCH 1/2] libata: use sleep instead of standby command References: <1383612780-6591-1-git-send-email-psusi@ubuntu.com> <527856B6.8030901@intel.com> In-Reply-To: <527856B6.8030901@intel.com> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 11/04/2013 09:23 PM, Aaron Lu wrote: > I suppose this is mainly for runtime PM? Since for system > suspend/hibernation, the disk and its controller will be powered > off anyway. Yes, or the second patch also helps when one manually issues hdparm - -Y, which otherwise will cause the drive to be woken up to answer the CHECK POWER command, which udisks issues to decide if it should skip polling the SMART status of the drive. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCgAGBQJSeFpOAAoJEJrBOlT6nu75JdwIALFvwncNyf1ENxnIho2Y3CXC N6BpHQ7CzD1tap/5ybSFPBvUvJfyC/UPAY69bjldOtbwnArDIWRFqEWW7JWm6G0z J1C5MMCIRHSuRo4RbN/rnsPQFsaFJy0Z5kJ0uXX+aOrZwEov5vo2MEuj/DEdCBDC SKpYkogDlSHTNhFsaEF5iJiJlLU9FF5pEM6S6P0/+Z+SrZ5PVCDOm9rK+oeqrn0U TBX5tKPxWRSjJ/2F094DYia5l8ODNgzl1gPDXA50a+A4M0CZi3d5Liz5Ctfnv88A ac5cG8Ae8MDss0kJmSMCuRwkKVIROM3qMxf1wDWjBwm3eCTAJV1gxRYSN0adOvc= =Rfny -----END PGP SIGNATURE-----