From: Chris Ball <cjb@laptop.org>
To: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: ludovic.desroches@atmel.com,
linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org
Subject: Re: [PATCH] mmc: atmel-mci: fix timeout errors in SDIO mode when using DMA
Date: Tue, 26 Nov 2013 17:24:45 -0500 [thread overview]
Message-ID: <87zjoqer82.fsf@octavius.laptop.org> (raw)
In-Reply-To: <528E29D0.9080507@atmel.com> (Nicolas Ferre's message of "Thu, 21 Nov 2013 16:42:08 +0100")
Hi,
On Thu, Nov 21 2013, Nicolas Ferre wrote:
> On 20/11/2013 16:01, ludovic.desroches@atmel.com :
>> From: Ludovic Desroches <ludovic.desroches@atmel.com>
>>
>> With some SDIO devices, timeout errors can happen when reading data. To solve
>> this issue the DMA transfer has to be activated before sending the command to
>> the device. This order is incorrect in PDC mode. So we have to take care if we
>> are using DMA or PDC to know when to send the MMC command.
>>
>> Cc: <stable@vger.kernel.org> #3.2+
>> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
>
> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Thanks, pushed to mmc-next for 3.14.
- Chris.
--
Chris Ball <cjb@laptop.org> <http://printf.net/>
next prev parent reply other threads:[~2013-11-26 22:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 15:01 [PATCH] mmc: atmel-mci: fix timeout errors in SDIO mode when using DMA ludovic.desroches
2013-11-21 15:42 ` Nicolas Ferre
2013-11-26 22:24 ` Chris Ball [this message]
2013-11-27 9:41 ` Nicolas Ferre
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