[alsa-devel] [PATCH 0/2] ASoC: Fix wm97xx touchscreen driver

[Lars-Peter Clausen]

On 01/23/2015 08:09 PM, Manuel Lauss wrote:
> On Fri, Jan 23, 2015 at 4:21 PM, Lars-Peter Clausen <lars at metafoo.de> wrote:
>> The wm97xx touchscreen driver will bind itself to the snd_ac97 device
>> registered by CODEC drivers and expects that the device has already been
>> reset by the CODEC driver. Previous to commit 6794f709b712 ("ASoC: ac97:
>> Drop delayed device registration") the snd_ac97 device was only registered
>> after the CODEC driver probe function had finished running, but starting
>> with the commit it is registered within snd_soc_new_ac97_codec(). This
>> breaks the touchscreen driver as the reset is no longer performed before the
>> touchscreen driver probe function runs. This patch series introduces a new
>> function snd_soc_alloc_ac97_codec() which allocates the snd_ac97 device, but
>> does not yet register it yet. This allows the CODEC drivers to perform the
>> reset before the device is registered.
>>
>> The series is meant to perform a minimum amount of changes while fixing the
>> issue to prevent introducing other regressions. I have a few more patches
>> that consolidate the reset handling in the drivers and puts it into the core
>> in snd_soc_new_ac97_codec() which makes the split in the drivers
>> unnecessary, but that's something for next and not for stable.
>>
>> Manuel can you give this another round of testing?
>
> Works very well.
>
> Tested-by: Manuel Lauss <manuel.lauss at gmail.com>

Thanks.

Just noticed I forgot to add the Wolfson guys to Cc, done now.

- Lars