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From:   Ulf Hansson <ulf.hansson@linaro.org>
Date:   Fri, 21 Feb 2020 10:48:23 +0100
Message-ID: <CAPDyKFo-vEO7zN_F+NqcKtnKmAo_deOZx3gYNiks3yTAQAjv-Q@mail.gmail.com>
Subject: Re: LKFT: arm x15: mmc1: cache flush error -110
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
Cc:     Jens Axboe <axboe@kernel.dk>, Alexei Starovoitov <ast@kernel.org>,
        linux-block <linux-block@vger.kernel.org>,
        lkft-triage@lists.linaro.org,
        open list <linux-kernel@vger.kernel.org>,
        "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
        Arnd Bergmann <arnd@arndb.de>,
        John Stultz <john.stultz@linaro.org>
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On Thu, 20 Feb 2020 at 18:54, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> On Wed, 19 Feb 2020 at 21:54, Ulf Hansson <ulf.hansson@linaro.org> wrote:
> >
> > On Thu, 13 Feb 2020 at 16:43, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
> > >
> >
> > Try to restore the value for the cache flush timeout, by updating the
> > define MMC_CACHE_FLUSH_TIMEOUT_MS to 10 * 60 * 1000".
>
> I have increased the timeout to 10 minutes but it did not help.
> Same error found.
> [  608.679353] mmc1: Card stuck being busy! mmc_poll_for_busy
> [  608.684964] mmc1: cache flush error -110
> [  608.689005] blk_update_request: I/O error, dev mmcblk1, sector
> 4302400 op 0x1:(WRITE) flags 0x20800 phys_seg 1 prio class 0
>
> OTOH, What best i could do for my own experiment to revert all three patches and
> now the reported error gone and device mount successfully [1].
>
> List of patches reverted,
>   mmc: core: Specify timeouts for BKOPS and CACHE_FLUSH for eMMC
>   mmc: block: Use generic_cmd6_time when modifying
>     INAND_CMD38_ARG_EXT_CSD
>   mmc: core: Default to generic_cmd6_time as timeout in __mmc_switch()
>
> [1] https://lkft.validation.linaro.org/scheduler/job/1238275#L4346
>
> - Naresh

Thanks for testing!

This sounds a bit weird, I must say. Also, while looking into the
logs, it seems like you are comparing a v5.5 kernel with v5.6-rc2, but
maybe I didn't read the logs carefully enough.

 In any case, I am looking into creating a debug patch so we can
narrow down the problem a bit further.

Kind regards
Uffe