From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King Subject: Re: 2.6.15-rc1: IDE: fix potential data corruption with SL82C105 interfaces Date: Sat, 12 Nov 2005 17:46:01 +0000 Message-ID: <20051112174601.GC28987@flint.arm.linux.org.uk> References: <20051112165548.GB28987@flint.arm.linux.org.uk> <1131818615.18258.6.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from caramon.arm.linux.org.uk ([212.18.232.186]:38930 "EHLO caramon.arm.linux.org.uk") by vger.kernel.org with ESMTP id S932432AbVKLRqI (ORCPT ); Sat, 12 Nov 2005 12:46:08 -0500 Content-Disposition: inline In-Reply-To: <1131818615.18258.6.camel@localhost.localdomain> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Cox Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org On Sat, Nov 12, 2005 at 06:03:34PM +0000, Alan Cox wrote: > On Sad, 2005-11-12 at 16:55 +0000, Russell King wrote: > > We must _never_ _ever_ on pain of death enable IDE DMA on SL82C105 > > chipsets where the southbridge revision is <= 5, otherwise data > > corruption will occur. > > If you are fixing this driver also set ->serialize = 1; before someone > with dual channel device gets burned. Thanks for reminding me - I've included that as well. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core