[alsa-devel] [RFC][PATCH] ASoC: soc-core: verify Sound Card normality

[Kuninori Morimoto]

Hi Takashi-san

> > So, we can call snd_soc_unregister_card() whenever CPU/Codec/Platform
> > were unregsiterd.
> 
> In theory yes, but you should be careful to do so, e.g. make sure that
> it won't be called again by the removal/unbind of other components /
> drivers.
> 
> I suggested snd_card_disconnect() because it doesn't release resources
> by itself, but it just disconnects from the further accesses.  So,
> double-free won't happen in this case.  It makes the hotunplug safer
> as long as the drivers manage the resource releases properly.

I had checked many unbind/bind pattern/order on 2nd [RFC] patch which I posted.
At first, I believe Oops on unbind/bind issue was solved on it.
2nd, if my understanding was correct, it doesn't have double-free issue,
or something like that.
But, I'm not 100% sure about 2nd, thus it has [RFC] on patch.

Best regards
---
Kuninori Morimoto