linux-kernel - Re: [PATCH 1/2] mmc: bcm2835: reset host on timeout

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Message-ID: <ecf8dd61-ab16-b298-d197-ea93ecf5982b@i2se.com>
Date:   Wed, 14 Feb 2018 17:49:31 +0100
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Michal Suchánek <msuchanek@...e.de>,
        Phil Elwell <phil@...pberrypi.org>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Eric Anholt <eric@...olt.net>,
        Gerd Hoffmann <kraxel@...hat.com>,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>,
        Julia Lawall <Julia.Lawall@...6.fr>, linux-mmc@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mmc: bcm2835: reset host on timeout

Hi Michal,

[add Phil]

Am 14.02.2018 um 17:13 schrieb Michal Suchánek:
> On Wed, 14 Feb 2018 16:36:49 +0100
> Michal Suchánek <msuchanek@...e.de> wrote:
>
>> On Wed, 14 Feb 2018 15:58:31 +0100
>> Stefan Wahren <stefan.wahren@...e.com> wrote:
>>
>>> Hi Michal,
>>>
>>> Am 14.02.2018 um 15:38 schrieb Michal Suchanek:  
>>>> The bcm2835 mmc host tends to lock up for unknown reason so reset
>>>> it on timeout. The upper mmc block layer tries retransimitting
>>>> with single blocks which tends to work out after a long wait.
>>>>
>>>> This is better than giving up and leaving the machine broken for
>>>> no obvious reason.    
>>> could you please provide more information about this issue (affected
>>> hardware, kernel config, version, dmesg, reproducible scenario)?
>>>   
> It tends to reproduce when upgrading a few packages with zypper and
> otherwise at random during system operation. It seems that for my card
> it worsens with age to some degree so perhaps it depends on the
> fragmentation of the internal card flash.
>
> Attaching dmesg and kernel config.

do you noticed this issue before 4.15-rc4?

Could you please test with 4.15 final again?

What kind of SD card (name) triggers the issue?

Thanks Stefan

>
> Thanks
>
> Michal