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

[Adrian Hunter <adrian.hunter@intel.com>]

On 15/02/2016 9:38 a.m., Wolfram Schlich wrote:
> * Adrian Hunter <adrian.hunter@intel.com> [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