linux-kernel - Re: [PATCH] mmc: dw_mmc: Wait for data transfer after response errors

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Message-id: <55652383.2020204@samsung.com>
Date:	Wed, 27 May 2015 10:53:07 +0900
From:	Jaehoon Chung <jh80.chung@...sung.com>
To:	Doug Anderson <dianders@...omium.org>,
	Alim Akhtar <alim.akhtar@...il.com>
Cc:	Seungwon Jeon <tgih.jun@...sung.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Sonny Rao <sonnyrao@...omium.org>,
	Andrew Bresticker <abrestic@...omium.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Addy Ke <addy.ke@...k-chips.com>,
	Alexandru Stan <amstan@...omium.org>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Chris Zhong <zyw@...k-chips.com>,
	Caesar Wang <wxt@...k-chips.com>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: dw_mmc: Wait for data transfer after response errors

Hi, All.

Thanks for your effort and sorry for late!

On 05/27/2015 05:44 AM, Doug Anderson wrote:
> Alim,
> 
> On Tue, May 26, 2015 at 11:02 AM, Alim Akhtar <alim.akhtar@...il.com> wrote:
>> Hi Doug,
>> On peach-pi, I got a hung task once in 4 cold boot as [1].
> 
> OK, I'll have to get my peach-pi or peach-pit up and running again.  I
> ran out of desk space and I haven't gotten it set back up.  :(
> 
> I've been testing on an rk3288-based device.  Past experience has
> taught me that the rk3288 dw_mmc works differently than the exynos
> one, so perhaps this is a difference.
> 
> Could you possibly patch in something like
> <https://chromium-review.googlesource.com/#/c/244347/> and provide the
> console for the failure?  I'll put it on my list to try this myself,
> too

I don't test with this..but if needs, i will test.
It needs to fix the Alim's problem.

> 
> 
>> I was checking on v4.1-rc5, git hash as below:
>>
>> 862e58a mmc: dw_mmc: Wait for data transfer after response errors
>> ba155e2 Linux 4.1-rc5
>> 5b13966
>>
>> Not sure if I missed any dependent patch??
> 
> I'm currently testing out of tree, but my dw_mmc is very close to mainline.
> 
> 
>> Have not checked the dw TRM for this change, will do that as soon as I
>> get access to it.
> 
> OK, sounds good.  I have some old version of the DesignWare TRM, so
> possibly something is different in the newer one...

Which version do you have? I also need to check the TRM version.

Best Regards,
Jaehoon Chung

> 
> 
> -Doug
> 

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