Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Wed, 14 Feb 2018 20:24:54 +0100
From:   Michal =?UTF-8?B?U3VjaMOhbmVr?= <msuchanek@suse.de>
To:     Stefan Wahren <stefan.wahren@i2se.com>
Cc:     Phil Elwell <phil@raspberrypi.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Ray Jui <rjui@broadcom.com>,
        Scott Branden <sbranden@broadcom.com>,
        bcm-kernel-feedback-list@broadcom.com,
        Eric Anholt <eric@anholt.net>,
        Gerd Hoffmann <kraxel@redhat.com>,
        "Gustavo A. R. Silva" <garsilva@embeddedor.com>,
        Julia Lawall <Julia.Lawall@lip6.fr>, linux-mmc@vger.kernel.org,
        linux-rpi-kernel@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mmc: bcm2835: reset host on timeout
Message-ID: <20180214202454.6e7ebeaf@naga.suse.cz>
In-Reply-To: <ecf8dd61-ab16-b298-d197-ea93ecf5982b@i2se.com>
References: <97593d6e1a41af1baff61f7d9e6e68a450fc9da6.1518619058.git.msuchanek@suse.de>
        <1fbf0d77-cb53-f0fa-b810-e9954138d907@i2se.com>
        <20180214163649.3a0c9476@kitsune.suse.cz>
        <20180214165827.386b9bb1@kitsune.suse.cz>
        <ecf8dd61-ab16-b298-d197-ea93ecf5982b@i2se.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8BIT
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed, 14 Feb 2018 17:49:31 +0100
Stefan Wahren <stefan.wahren@i2se.com> wrote:

> 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@suse.de> wrote:
> >  
> >> On Wed, 14 Feb 2018 15:58:31 +0100
> >> Stefan Wahren <stefan.wahren@i2se.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?

I initially noticed it with 4.4 kernel with some backports to make it
bootable on RPi.
> 
> Could you please test with 4.15 final again?

Right, I can apply the patches on something more recent.

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

Samsung EVO MB-MP16D

Also see https://elinux.org/RPi_SD_cards#Which_SD_card.3F

Thanks

Michal