linux-kernel - Re: LKFT: arm x15: mmc1: cache flush error -110

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Date:   Fri, 21 Feb 2020 10:48:23 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     Jens Axboe <axboe@...nel.dk>, Alexei Starovoitov <ast@...nel.org>,
        linux-block <linux-block@...r.kernel.org>,
        lkft-triage@...ts.linaro.org,
        open list <linux-kernel@...r.kernel.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        John Stultz <john.stultz@...aro.org>
Subject: Re: LKFT: arm x15: mmc1: cache flush error -110

On Thu, 20 Feb 2020 at 18:54, Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
>
> On Wed, 19 Feb 2020 at 21:54, Ulf Hansson <ulf.hansson@...aro.org> wrote:
> >
> > On Thu, 13 Feb 2020 at 16:43, Naresh Kamboju <naresh.kamboju@...aro.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