From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: [PATCH] libata: Integrate ACPI-based PATA/SATA hotplug - version 2 Date: Fri, 21 Sep 2007 04:12:45 +0100 Message-ID: <20070921031245.GA6628@srcf.ucam.org> References: <20070915030154.GA17655@srcf.ucam.org> <20070915170652.GA25504@srcf.ucam.org> <46F2EE66.9060207@garzik.org> <20070920222138.GA3740@srcf.ucam.org> <46F32DD9.7010509@gmail.com> <20070921024214.GA6317@srcf.ucam.org> <46F3322D.5090407@gmail.com> <20070921025734.GA6434@srcf.ucam.org> <46F33597.1000307@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([78.32.9.130]:39397 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755907AbXIUDM5 (ORCPT ); Thu, 20 Sep 2007 23:12:57 -0400 Content-Disposition: inline In-Reply-To: <46F33597.1000307@gmail.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Tejun Heo Cc: Jeff Garzik , linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org, Andrew Morton On Fri, Sep 21, 2007 at 12:08:07PM +0900, Tejun Heo wrote: > Yeah, that's the intended behavior. SATA PHY link can break from time > to time (have ever seen a SATA storage box going through ECC testing? > PHY goes offline as soon as you begin to hit it with some EM pulses) and > you don't really wanna lose your root partition over power fluctuation. In this case we explicitly know that it's in response to a hotplug event (well, either that or the firmware is on impressive crack). Would it be possible to communicate that in order to avoid the revalidation? -- Matthew Garrett | mjg59@srcf.ucam.org