linux-kernel - Re: [PATCH] OMAP HSMMC: fix MMC3 dma

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Message-ID: <6ed0b2680901270900t24838c73l3aa8edca62c91710@mail.gmail.com>
Date:	Tue, 27 Jan 2009 19:00:33 +0200
From:	Grazvydas Ignotas <notasas@...il.com>
To:	Adrian Hunter <ext-adrian.hunter@...ia.com>
Cc:	"tony@...mide.com" <tony@...mide.com>,
	"drzeus-mmc@...eus.cx" <drzeus-mmc@...eus.cx>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] OMAP HSMMC: fix MMC3 dma

On Tue, Jan 27, 2009 at 2:02 PM, Adrian Hunter
<ext-adrian.hunter@...ia.com> wrote:
> Grazvydas Ignotas wrote:
>>
>> Data transfers on third OMAP3 MMC controller don't work
>> because DMA line numbers are only defined for MMC1 and MMC2.
>> Fix that and store line numbers in mmc_omap_host structure
>> to reduce code size.
>> Tested on OMAP3 pandora board.
>>
>> Signed-off-by: Grazvydas Ignotas <notasas@...il.com>
>> ---
>>  drivers/mmc/host/omap_hsmmc.c |   31 +++++++++++++++++++++++--------
>>  1 files changed, 23 insertions(+), 8 deletions(-)
>>
>
> Have you considered using the scatter-gather emulation patch:
>
>        http://marc.info/?l=linux-omap&m=122726069922195&w=2
>
> It was reverted:
>
>        http://marc.info/?l=linux-omap&m=122904725322787&w=2
>
> because of a hardware problem with OMAP3430 before ES3.0, but applying:
>
>
>  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6a79e391df295bd7c2aa1309ea5031f361c197fd
>
> seems to overcome even that.

Hmm, but it still doesn't know about MMC3. But in case that SG patch
goes first, I can resend.
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