From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aaron Lu Subject: Re: [PATCH v6 0/7] ZPODD patches Date: Thu, 13 Sep 2012 16:30:58 +0800 Message-ID: <505199C2.7070309@intel.com> References: <1346768680-7287-1-git-send-email-aaron.lwe@gmail.com> <7AD76063A97F48128F7F6B285CD05C7E@usish.com.cn> <505150F7.3040800@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org To: Jack Wang Cc: 'Aaron Lu' , 'Alan Stern' , 'James Bottomley' , 'Jeff Garzik' , linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, linux-pm@vger.kernel.org, linux-acpi@vger.kernel.org List-Id: linux-ide@vger.kernel.org On 09/13/2012 04:15 PM, Jack Wang wrote: >>> For hard disk runtime power off, Is there (hardware?) requirement for > hard >>> drive to support similar feature? >> >> No requirement for hard drive, as it does not need to remote wake up >> itself while powered off. >> >> Please note that there is a v7 sent yesterday, you may want to take a >> look at that instead of v6. >> >> And the runtime power off of hard drive is dropped from that patch set, >> I'll submit it in another patch set(pretty small changes needed). >> >> Thanks, >> Aaron > [Jack Wang] Thanks Aaron for quick replay, for disk runtime power off, will > it a different proach from block runtime power management patch set from > Lin Ming? I suppose you mean the "block layer runtime pm" from Lin Ming? No, they are different things. That patch set introduced a mechanism to decide when a device can enter runtime suspend based on block layer request, while my patch cares about when it is runtime suspended, how to remove its power. Thanks, Aaron