From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj@kernel.org>
Subject: Re: MWDMA Issue: sda: unknown partition table
Date: Fri, 21 Jan 2011 11:14:00 +0100
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To: viresh kumar <viresh.kumar@st.com>
Cc: "linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>, Shiraz HASHIM <shiraz.hashim@st.com>, Armando VISCONTI <armando.visconti@st.com>, Amit GOEL <amit.goel@st.com>

On Fri, Jan 21, 2011 at 03:39:56PM +0530, viresh kumar wrote:
> I am implementing mwdma interface for arasan compact flash controller.
> I am facing a strange problem, when i insert CF card on my board (after bootup),
> in mwdma mode, i get following:
> 
> ata1: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0xe frozen

That's AC_ERR_ATA_BUS.

> Can somebody give any clue on which part i should try to look at?

Yeah, someone is reporting CRC error.

-- 
tejun