linux-kernel - Re: SDHCI: timeout during data transfer

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Date:	Fri, 3 Oct 2008 13:27:52 +0200
From:	"Luca Tettamanti" <kronos.it@...il.com>
To:	"Pierre Ossman" <drzeus-mmc@...eus.cx>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: SDHCI: timeout during data transfer

On Thu, Oct 2, 2008 at 10:17 AM, Pierre Ossman <drzeus-mmc@...eus.cx> wrote:
> On Tue, 23 Sep 2008 23:24:59 +0200
> Luca Tettamanti <kronos.it@...il.com> wrote:
>
>> Hi,
>> I'm seeing timeout errors when transfering "big" (over 1MB or so) files to a SD
>> card (small files are ok):
>>
>> [  251.956666] mmcblk0: error -110 transferring data
>> [  251.979810] end_request: I/O error, dev mmcblk0, sector 1572758
>
> Looks like the card died on you there. Did you build the kernel
> yourself? If so, it would be helpful if you could enable
> CONFIG_MMC_DEBUG and give me a complete dmesg dump from when this
> happens.

Hum, cannot reproduce (but it was consistently failing when I tested
the patch... the only difference is a mkfs in between). I just got a
few retries:

[  187.158063] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000040
[  187.656190] mmc0: clock 0Hz busmode 1 powermode 1 cs 0 Vdd 21 width
0 timing 0
[  187.658366] mmc0: clock 128906Hz busmode 1 powermode 2 cs 0 Vdd 21
width 0 timing 0
[  187.660500] mmc0: clock 128906Hz busmode 1 powermode 2 cs 1 Vdd 21
width 0 timing 0
[  187.661634] mmc0: starting CMD0 arg 00000000 flags 000000c0
[  187.662265] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
[  187.662283] mmc0: req done (CMD0): 0: 00000000 00000000 00000000 00000000
[  187.663461] mmc0: clock 128906Hz busmode 1 powermode 2 cs 0 Vdd 21
width 0 timing 0
[  187.664473] mmc0: starting CMD8 arg 000001aa flags 000002f5
[  187.665423] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
[  187.665439] mmc0: req done (CMD8): 0: 000001aa 00000000 00000000 00000000
[  187.665474] mmc0: starting CMD5 arg 00000000 flags 000002e1
[  187.666423] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00018000
[  187.668435] mmc0: req failed (CMD5): -110, retrying...
[  187.669423] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00018000
[  187.671424] mmc0: req failed (CMD5): -110, retrying...
[  187.672422] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00018000
[  187.674423] mmc0: req failed (CMD5): -110, retrying...
[  187.675425] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00018000
[  187.677436] mmc0: req done (CMD5): -110: 00000000 00000000 00000000 00000000
[  187.677683] mmc0: starting CMD55 arg 00000000 flags 000000f5
[  187.678754] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
[  187.678770] mmc0: req done (CMD55): 0: 00000120 00000000 00000000 00000000
[  187.678808] mmc0: starting CMD41 arg 00000000 flags 000000e1
[  187.679877] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
[  187.679893] mmc0: req done (CMD41): 0: 00ff8000 00000000 00000000 00000000
[  187.679995] mmc0: clock 128906Hz busmode 1 powermode 2 cs 0 Vdd 20
width 0 timing 0
[  187.680021] mmc0: clock 128906Hz busmode 1 powermode 2 cs 1 Vdd 20
width 0 timing 0
[cut 80MB of logs]

Is it possible that the error was generated by a faulty flash block?

Luca
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