From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Michlmayr Subject: Re: [RFC][PATCH] sata_mv: harddisk activity led no longer responsive on QNAP TS-109 Date: Sun, 1 Mar 2009 08:59:56 +0100 Message-ID: <20090301075956.GA28039@deprecation.cyrius.com> References: <200808261124.39282.elendil@planet.nl> <200808261225.46315.elendil@planet.nl> <497B2C60.60608@rtr.ca> <200902240933.45874.elendil@planet.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from sorrow.cyrius.com ([65.19.161.204]:58913 "EHLO sorrow.cyrius.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751777AbZCAIAK (ORCPT ); Sun, 1 Mar 2009 03:00:10 -0500 Content-Disposition: inline In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: saeed bishara Cc: Frans Pop , Mark Lord , linux-arm@vger.kernel.org, linux-ide@vger.kernel.org, Saeed Bishara , Nicolas Pitre , Lennert Buytenhek * saeed bishara [2009-02-24 11:33]: > What I think is that this issue is seen with the specific disk that > you have, the chip blinks the LED depending on the BUSY bit status, > and I suspect that with the disk you have does clear that bit > immediately after receiving the command FIS, so the LED will be off, > though the command is not completed yet, and this makes the led > responsiveness differ that in NCQ-disabled mode. The LED issue was reported by two people on the QNAP forum the other day. I asked what disks they had and one has a WDC WD7500AACS-00D6B0 whereas the other one has a WDC WD10EADS-00L5B1. Do you also use a WDC disk, Frans? References: http://forum.qnap.com/viewtopic.php?f=147&t=1344&start=220#p55925 http://forum.qnap.com/viewtopic.php?f=147&t=1344&start=220#p56027 http://forum.qnap.com/viewtopic.php?f=147&t=1344&start=230#p56351 -- Martin Michlmayr http://www.cyrius.com/