Re: mc13xxx-core: kernel hangs after 'regmap_read'

[Fabio Estevam]

On Tue, May 22, 2012 at 6:25 AM, Mark Brown
<broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> On Tue, May 22, 2012 at 10:53:21AM +1000, Marc Reilly wrote:
>
>> It was a new format which introduced a padding bit. I wonder if Mark Brown can
>> comment on whether any other devices are using it successfully. (Sorry I can't
>> offer more insights there).
>
> It's only this chip that's doing so. ÂI'd suggest putting a scope on it
> and having a look at the formatted data.

As I don't have a way to access the SPI pins via scope I did a

git checkout  91b5e7411, which corresponds to the following commit:

commit 91b5e741184ea9836cd7d7509e4f9b6eefa27df2
Author: Marc Reilly <marc@xxxxxxxxxxxxxxx>
Date:   Sun Apr 1 16:41:37 2012 +1000

    mfd: Use regmap for the mc13xxx-core register access

,and now at least it does not silently hang and gives me a regmap failure:

spi_imx imx31-cspi.1: master is unqueued, this is deprecated
mc13xxx spi1.1: Failed to initialize register map: -22
mc13xxx: probe of spi1.1 failed with error -22
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/