MMC is *still* broken...

Olof Johansson olof at
Thu Jun 5 15:21:03 PDT 2014

[Adding Hans]

On Thu, Jun 5, 2014 at 12:31 PM, Chris Ball <chris at> wrote:
> Hi Russell, adding Ulf and Olof,
> On Thu, Jun 05 2014, Russell King - ARM Linux wrote:
>> drivers/mmc/core/core.c: In function 'mmc_card_power_up':
>> drivers/mmc/core/core.c:1517:4: error: implicit declaration of
>> function 'gpiod_set_value'
>> I reported this back in April, and it's still present.  This makes me
>> wonder if MMC is maintained.... and makes me wonder what the point
>> of reporting bugs is if they just get ignored.
> I don't recall your report.  I might have just failed to read it, but
> doing a quick mail search only finds "Subject: randconfig failures -
> MMC + trusted foundations" -- which was sent to linux-arm-kernel@, but
> not CC'd to linux-mmc@ or to me.
> Furthermore, this error does not exist in mmc-next or linux-next,
> so it's unclear why or how the MMC maintainers would fix it.
> drivers/mmc/core/core.c does not use gpiod_set_value() in these trees.
> Presumably you're testing Olof's unmerged patch "mmc: add support for
> power-on sequencing through DT".  If it needs to include more gpio
> headers, that should be reported to Olof for a respin.
> The patch has not been merged because we're still discussing the best
> way forward on linux-mmc@, in the thread "RFC: representing sdio
> devices oob interrupt, clks, etc. in device tree".  The most recent
> message in the thread is from yesterday.

Right, Hans has taken over the patch set and he should revise it as
needed. Hans?


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