linux-kernel - Re: [PATCH v2] mmc: dw_mmc: fix bug that cause mmc

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Date:	Wed, 25 Feb 2015 19:17:53 +0100
From:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
To:	Addy Ke <addy.ke@...k-chips.com>, ulf.hansson@...aro.org,
	jh80.chung@...sung.com, olof@...om.net, heiko@...ech.de
CC:	huangtao@...k-chips.com, lintao@...k-chips.com, cf@...k-chips.com,
	linux-rockchip@...ts.infradead.org, linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] mmc: dw_mmc: fix bug that cause mmc_test failture

Hello Addy,

On 02/20/2015 03:55 AM, Addy Ke wrote:
> The STOP command can terminate a data transfer between a memory card and
> mmc controller.
> 
> As show in Synopsys DesignWare Cores Mobile Stroage Host Databook:

s/Stroage/Storage but maybe Ulf can amend the typo when applying?

> Data timeout and Data end-bit error will terminate further data transfer
> by mmc controller. So we should not send abort command to terminate a
> data transfer again if we got DRTO and EBE interrupt.
> 
> After this patch, all mmc_test cases can pass on RK3288-Pink2 board.
> 
> Signed-off-by: Addy Ke <addy.ke@...k-chips.com>

I did not run all the tests listed in /sys/kernel/debug/mmc*/*/testlist
because some of them will overwrite the data in my card but at least
the read ones completed successfully and $subject does not cause a
regression in the Exynos5250 Snow, Exynos5420 Peach Pit and Exynos5800
Peach Pi Chromebooks where I tested it.

Tested-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>

Best regards,
Javier
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