From mboxrd@z Thu Jan  1 00:00:00 1970
From: daniel@caiaq.de (Daniel Mack)
Date: Tue, 15 Jun 2010 09:22:37 +0200
Subject: mxcmmc driver hangs on sync
In-Reply-To: <20100615152051.26e4589c@morgan>
References: <20100615112936.5d03ce92@morgan>
	<20100615063142.GU17833@buzzloop.caiaq.de>
	<20100615152051.26e4589c@morgan>
Message-ID: <20100615072237.GW17833@buzzloop.caiaq.de>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Tue, Jun 15, 2010 at 03:20:51PM +0800, Morgan Howe wrote:
> On Tue, 15 Jun 2010 08:31:43 +0200
> Daniel Mack <daniel@caiaq.de> wrote:
> > On Tue, Jun 15, 2010 at 11:29:36AM +0800, Morgan Howe wrote:
> > > With the older kernel this would hang on sync after a few thousand
> > > loops, and much sooner if you ran 2 or 3 of these processes at a
> > > time. I tried last night with the newer kernel and kicking off 3
> > > processes and after ~100-150 loops per process I get this:
> > 
> > Which 'newer kernel' did you try?
> 
> Hey Daniel,
> 
> Sorry, I said current mainline, but actually it's 2.6.35-rc1.

Could you try two things:

a) build a kernel without MX2 DMA support
b) try 2.6.34, as there were some updates to the mxcmmc driver after
   2.6.34 which could be related

Daniel