linux-kernel - Re: [PATCH] fix misalignment in pxamci

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Message-ID: <20080729130917.116df5bc@mjolnir.drzeus.cx>
Date:	Tue, 29 Jul 2008 13:09:17 +0200
From:	Pierre Ossman <drzeus-mmc@...eus.cx>
To:	"pHilipp Zabel" <philipp.zabel@...il.com>
Cc:	"Uli Luckas" <u.luckas@...d.de>,
	LKML <linux-kernel@...r.kernel.org>,
	"Marek Vasut" <marek.vasut@...il.com>
Subject: Re: [PATCH] fix misalignment in pxamci

On Tue, 29 Jul 2008 08:30:09 +0200
"pHilipp Zabel" <philipp.zabel@...il.com> wrote:

> 
> Argh, DALGN shouldn't be defined in pxa-regs.h. We really need an
> aligned SCR target then. Pierre, is there any way we can have the MMC
> core align DMA targets for pxa25x?
> 

No, not really. So if you can't work around the hardware limitations,
add a bounce buffer or fail the requests that cannot be handled (or
both, if you have a bounce buffer that's smaller than the maximum
request size).


-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  rdesktop, core developer          http://www.rdesktop.org

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