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

[Manuel Lauss]

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 Lars!
      Manuel