From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266769AbUHCRtN (ORCPT ); Tue, 3 Aug 2004 13:49:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266778AbUHCRtN (ORCPT ); Tue, 3 Aug 2004 13:49:13 -0400 Received: from cpu1185.adsl.bellglobal.com ([207.236.110.166]:41618 "EHLO mail.rtr.ca") by vger.kernel.org with ESMTP id S266769AbUHCRsQ (ORCPT ); Tue, 3 Aug 2004 13:48:16 -0400 Message-ID: <410FCF9A.0@rtr.ca> Date: Tue, 03 Aug 2004 13:47:06 -0400 From: Mark Lord User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040616 X-Accept-Language: en, en-us MIME-Version: 1.0 To: Jeff Garzik Cc: Alan Cox , Todd Poynor , Bartlomiej Zolnierkiewicz , Linux Kernel Mailing List , tim.bird@am.sony.com, dsingleton@mvista.com Subject: Re: [PATCH] Configure IDE probe delays References: <20040730191100.GA22201@slurryseal.ddns.mvista.com> <1091226922.5083.13.camel@localhost.localdomain> <410AEDC8.6030901@pobox.com> In-Reply-To: <410AEDC8.6030901@pobox.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I'm the dude responsible for the infamous "50 milliseconds" here. I agree that (1) it is overkill, (2) it could be optimised, and (3) it is very very non-standard. But it also works extraordinarilly well. I still am very active with ATA and SATA driver development, and the basic Linux IDE probe works for me on vendor hardware where their own standards-specific routines sometimes fail (even in their windows drivers). If possible, it would be best to let it be, and over time it will be less and less important as SATA and kin take over the universe. Every time I tried to tweak it to be faster, it seemed to break some system or another. One possibility here would be to augment it with reset signature probing, and/or a cyl-high read/write test. These could speed things up for more mainstream cases. But I'm not going to touch what's there myself! Cheers -- Mark Lord (hdparm keeper & the original "Linux IDE Guy")