Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752827AbYL3TIm (ORCPT ); Tue, 30 Dec 2008 14:08:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752032AbYL3TIb (ORCPT ); Tue, 30 Dec 2008 14:08:31 -0500 Received: from mail-bw0-f21.google.com ([209.85.218.21]:44281 "EHLO mail-bw0-f21.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751932AbYL3TIa (ORCPT ); Tue, 30 Dec 2008 14:08:30 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references:x-google-sender-auth; b=k+9ShwhJOfKciOTENcCYLrRPFgYrevdSERSibfmTu1FCi/gSo/AVJa8aRC4w9L4+OK qEJ3PrnbEF0PYyQgLvE1ZF2EH5Skt6gg0nZYY7LWrofCgyllY2/RLHL/VEE1ybH9k+xt 6wqQDR5FKTJ+naz2eot/eP6ujp/P2MTFQxbkg= Message-ID: <9b2b86520812301108k525ca193gac0307b630bdbbd1@mail.gmail.com> Date: Tue, 30 Dec 2008 19:08:28 +0000 From: "Alan Jenkins" To: "Grant Grundler" Subject: Re: 2.6.28: Is there a way to disable sata probing for certain ports? Cc: "Justin Piszcz" , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: X-Google-Sender-Auth: fd321968bfc45266 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1558 Lines: 34 On Tue, Dec 30, 2008 at 5:08 PM, Grant Grundler wrote: > On Tue, Dec 30, 2008 at 4:24 AM, Justin Piszcz wrote: >> When I boot from an Intel X25-E SSD, it takes roughly a few seconds; >> however, items such as: >> >> $ dmesg|grep link\ down >> [ 2.447030] ata4: SATA link down (SStatus 0 SControl 300) >> [ 4.481288] ata5: SATA link down (SStatus 0 SControl 0) >> [ 6.501288] ata6: SATA link down (SStatus 0 SControl 0) >> [ 8.522038] ata7: SATA link down (SStatus 0 SControl 0) >> [ 10.552288] ata8: SATA link down (SStatus 0 SControl 0) >> >> Scanning for devices on channels that have nothing connected adds to the >> boot time, is there anyway to turn off/disable scanning for certain ports to >> help speed the boot process? > > Some BIOSs allow one to enable/disable each port individually. > Have you checked the BIOS config menus for such an option? > > drivers/ata/libata-core.c declares "ata_force_param_buf" but I don't > see any documentation for it despite the reference to > Documentation/kernel-parameters.txt . There is. Search the file for "libata.force". But it doesn't support disabling the scan for specific ports; that has yet to be implemented. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/