Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761951AbYGBC4T (ORCPT ); Tue, 1 Jul 2008 22:56:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759173AbYGBC4A (ORCPT ); Tue, 1 Jul 2008 22:56:00 -0400 Received: from wf-out-1314.google.com ([209.85.200.170]:42789 "EHLO wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759128AbYGBCz7 (ORCPT ); Tue, 1 Jul 2008 22:55:59 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=MpwzCvJp6lJsytEL7t/Ul7Lz4CDcfT+MjurCZkNMdRiAGgYv6m7zEBNNXfLhy/+UR2 xkY7Mip7hu+ElK6i4x3783vSgFvQ+6bd3jQigD6vwSSkTEZca9PTXV0S8T9HiqYe12IA nSPFzEhgedTwU+k8V4zG598pEFYuPhIJAyEOQ= Message-ID: <486AEE29.2010506@gmail.com> Date: Wed, 02 Jul 2008 11:55:37 +0900 From: Tejun Heo User-Agent: Thunderbird 2.0.0.12 (X11/20071114) MIME-Version: 1.0 To: "Rafael J. Wysocki" CC: linux-kernel@vger.kernel.org, =?ISO-8859-15?Q?Mathieu_B=E9rard?= , linux-ide@vger.kernel.org, ACPI Devel Maling List , Andrew Morton , Andi Kleen , Jeff Garzik Subject: Re: 2.6.25 to 2.6.26-rc8 regression (related to ahci and acpi _GTF) References: <4869FB3C.4060509@crans.org> <200807011614.21491.rjw@sisk.pl> In-Reply-To: <200807011614.21491.rjw@sisk.pl> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1295 Lines: 31 Rafael J. Wysocki wrote: > [Adding CCs.] > > On Tuesday, 1 of July 2008, Mathieu B?rard wrote: >> Hi, >> I have a laptop with an ICH6M SATA Controller and a Hitachi hard drive. >> While it worked well using the ahci module and Linux 2.6.25, >> it get randomly 'stuck' for several seconds to several minutes with 2.6.26-rc8. >> Successive errors progressively reduce the ATA link speed. >> >> Passing the libata.noacpi parameter is an effective workaround. >> >> Please note that it's not the first time i have this kind of issue, see: >> http://marc.info/?l=linux-ide&m=117305595312399&w=2 >> This was found to be a bad interaction between my _GTF taskfile, which enable the >> "Enable Device-Initiated Interface Power State Transitions" feature, and NCQ. >> The driver was later NCQ blacklisted to correct the problem. Can you please post the result of "hdparm -I /dev/sda" and full kernel boot log? 0xca is not a NCQ command so the it's not related to NCQ at all. It seems we'll need to filter out DIPM commands from _GTF. Thanks. -- tejun -- 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/