From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [patch 3/3] ata: SWNCQ should be enabled by default Date: Fri, 04 Apr 2008 04:10:25 -0400 Message-ID: <47F5E271.10903@garzik.org> References: <200803282133.m2SLXlWk011463@imap1.linux-foundation.org> <47EE465E.80401@gmail.com> <47EE88C9.3020805@dunaweb.hu> <47EEDACA.4060400@gmail.com> <15F501D1A78BD343BE8F4D8DB854566B1BFE2AF1@hkemmail01.nvidia.com> <47F069D7.3010702@gmail.com> <47F1A888.3020706@shaw.ca> <47F1AADC.1080104@shaw.ca> <15F501D1A78BD343BE8F4D8DB854566B1BFE2AF4@hkemmail01.nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:52896 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755707AbYDDIK4 (ORCPT ); Fri, 4 Apr 2008 04:10:56 -0400 In-Reply-To: <15F501D1A78BD343BE8F4D8DB854566B1BFE2AF4@hkemmail01.nvidia.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Kuan Luo Cc: Robert Hancock , Tejun Heo , Zoltan Boszormenyi , akpm@linux-foundation.org, linux-ide@vger.kernel.org, Peer Chen , Allen Martin Kuan Luo wrote: > Robert wrote: >> -Hotplug/hot-unplug fails to work properly, hotplug interrupts not >> raised (seemingly only on certain boards/configurations as I can't >> duplicate this problem). >> http://bugzilla.kernel.org/show_bug.cgi?id=8421 >> > I occasionly encountered this problem in one port under certain system, > but didn't see this issue under other systems in the same mainboard. > After adding the operation of manually clearing the added/removed > interrupt bit in NV_INT_STATUS_CK804 register > in nv_adma_interrupt function, i saw some improvement. > > The key problem is that no one who knows this controller comes to help > to solve these issue. > Given this disadvantage, i think disabling it maybe is a good choice. > I don't know whether we need to continue to provide patch for adma after > disabling adma function. Is there any hope of getting permission for me to (a) give the NV ADMA documentation to Robert, or (b) posting the ADMA PDF on http://gkernel.sourceforge.net/specs/ ? I strongly encourage vendors -- especially with chips at or past end-of-life -- to help customers and developers by permitting posting at http://gkernel.sourceforge.net/specs/ Thanks, Jeff