From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757951AbYETBoK (ORCPT ); Mon, 19 May 2008 21:44:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753945AbYETBn6 (ORCPT ); Mon, 19 May 2008 21:43:58 -0400 Received: from mga11.intel.com ([192.55.52.93]:20980 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752507AbYETBn6 (ORCPT ); Mon, 19 May 2008 21:43:58 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.27,513,1204531200"; d="scan'208";a="330120212" Subject: Re: [BISECTED] pata_jmicron: no drives found on post 2.6.25 kernels From: Shaohua Li To: Plamen Petrov Cc: linux-kernel@vger.kernel.org, Luca Tettamanti In-Reply-To: References: Content-Type: text/plain Date: Tue, 20 May 2008 09:48:28 +0800 Message-Id: <1211248108.19834.2.camel@sli10-desk.sh.intel.com> Mime-Version: 1.0 X-Mailer: Evolution 2.22.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2008-05-20 at 01:37 +0300, Plamen Petrov wrote: > Hello, folks! > > After 2.6.26 merge window opened, the optical drives in my > computer, hanging off a JMicron controler were not detected > by linux any more. > > Luca Tettamanti reported similar troubles: > http://marc.info/?l=linux-kernel&m=120958791323911&w=2 > > Its been 20 days, so I decided to bisect. > git bisect revealed that commit > 7d715a6c1ae5785d00fb9a876b5abdfc43abc44b > is the one causing pata_jmicron to fail to detect drives, > connected to the JMicron controler on my motherboard. > At least in my case, anyway... > Changing kernel config to CONFIG_PCIEASPM=n makes the drives > attached to the JMicron SATA/PATA controller usable again. When you enable this option, did you change any ASPM policy? By default, we are using the BIOS setting, so it shouldn't change any thing. Also can you please send me the 'lspci -vvvxxxx' output with/without the ASPM enabled? Thanks, Shaohua