Re: sdhci-pci: probe of 0000:11:00.0 failed with error -22

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On 15/02/2016 9:38 a.m., Wolfram Schlich wrote:
* Adrian Hunter <adrian.hunter@xxxxxxxxx> [2016-02-02 10:23]:
+ Peter Guo and Adam Lee

Adrian,

any news here?
Adam Lee has left Canonical and Peter Guo doesn't respond.
Is there something I can do to help?

I am traveling for a couple of weeks so I can't do much now.
First we need to determine where in the probe function the error
occurs.  Then maybe we can figure out a workaround.  But I don't
have the hardware.

Can you build a kernel and put some prints into the probe
function to try to find where the error occurs?


Cheers,
Wolfram

On 01/02/16 16:19, Wolfram Schlich wrote:
[ Issue originally reported as https://bugzilla.kernel.org/show_bug.cgi?id=110411 ]

Hi!

I am working on a Dell Precision M4800 laptop with Gentoo Linux and Kernel 4.3.3:

--8<--
Linux zephyr 4.3.3-gentoo #2 SMP Wed Jan 6 00:33:28 CET 2016 x86_64 Intel(R) Core(TM) i7-4910MQ CPU @ 2.90GHz GenuineIntel GNU/Linux
--8<--

It has an O2 Micro SD/MMC card reader (1217:8520) which is supposed to be supported by sdhci-pci-o2micro:

--8<--
11:00.0 SD Host controller: O2 Micro, Inc. SD/MMC Card Reader Controller (rev 01)
11:00.0 0805: 1217:8520 (rev 01)
--8<--

On bootup, the sdhci-pci driver fails to initialize the card reader with error -22:
--8<--
[    4.782054] sdhci: Secure Digital Host Controller Interface driver
[    4.782057] sdhci: Copyright(c) Pierre Ossman
[    4.782187] sdhci-pci 0000:11:00.0: SDHCI controller found [1217:8520] (rev 1)
[    4.782328] sdhci-pci: probe of 0000:11:00.0 failed with error -22
[    4.782376] sdhci-pltfm: SDHCI platform and OF driver helper
--8<--

What's wrong?

BIOS version is A15 from 09/29/2015.

UPDATE: The issue remains unchanged with kernel 4.3.5-gentoo.

Cheers,
Wolfram
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