From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: CF as IDE on ICH6M using libata Date: Sat, 08 Sep 2007 16:10:20 +0900 Message-ID: <46E24ADC.2000500@gmail.com> References: <6f9550040709020542h530f0bfap5b01fb4ff0c00f25@mail.gmail.com> <46DAB5DD.80807@gmail.com> <46DEE72B.2060702@rtr.ca> <6f9550040709051503k5b0a07b1x3e21bae3667ce17@mail.gmail.com> <46E03DF6.8090405@gmail.com> <46E1545A.5000404@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from qb-out-0506.google.com ([72.14.204.228]:33942 "EHLO qb-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753460AbXIHRHI (ORCPT ); Sat, 8 Sep 2007 13:07:08 -0400 Received: by qb-out-0506.google.com with SMTP id e11so714240qbe for ; Sat, 08 Sep 2007 10:07:07 -0700 (PDT) In-Reply-To: <46E1545A.5000404@rtr.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: Eddie Hung , linux-ide@vger.kernel.org Mark Lord wrote: > Tejun Heo wrote: >> Eddie Hung wrote: >>> However, I think we can conclude that ICH6M (which on the X41, has a >>> SATA-PATA bridge to connect a PATA drive) does not seem to support >>> MWDMA >> >> It isn't clear whether the fault is at the driver or the CF device. > > It's probably the bridge chip --> we've run through that one before > just recently (early summer?) on this list. A particular bridge that > doesn't work at all with MWDMA. Hmmm... How do we solve this situation? Till now, we've been blacklisting the device IDs but it doesn't work for broken bridges. Maybe we should default to not using MWDMA by default? -- tejun