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

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Message-ID: <1fbf0d77-cb53-f0fa-b810-e9954138d907@i2se.com>
Date:   Wed, 14 Feb 2018 15:58:31 +0100
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Michal Suchanek <msuchanek@...e.de>,
        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,

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)?