[alsa-devel] Question about struct snd_soc_dai() :: cpu_dai->codec

[Vinod Koul]

On Tue, Jul 26, 2016 at 05:41:56AM +0000, Kuninori Morimoto wrote:
> 
> Hi ALSA SoC
> 
> My current headache is ALSA SoC's each modules (= Card/Codec/CPU/Platform)
> doesn't care about "unbind/rmmod".
> For example, if someone unbinded/rmmoded "Codec", Card or other modules
> doesn't know about it. Thus, user can continue to use this sound card,
> and kernel will be Oops.

Are you sure about this? Have you tried removing a module?

During card probe, asoc will hold a reference to the component. See the
calls to try_module_get(). This will prevent from unloading under normal
cases.

-- 
~Vinod