[alsa-devel] [PATCH 08/13] ASoC: Track which components have been registered with snd_soc_register_component()

Charles Keepax ckeepax at opensource.wolfsonmicro.com
Mon Mar 24 12:18:05 CET 2014

On Tue, Mar 18, 2014 at 09:02:11AM +0100, Lars-Peter Clausen wrote:
> snd_soc_unregister_component() takes the parent device of the component as a
> parameter and then looks up the component based on this. This is a problem if
> multiple components are registered for the same parent device. Currently drivers
> do not do this, but some drivers register a CPU DAI component and a platform for
> the same parent device. This will become a problem once platforms are also made
> components. To make sure that snd_soc_unregister_component() will not
> accidentally unregister the platform in such a case only consider components
> that were registered with snd_soc_register_component(). This is only meant as
> short term stopgap solution to be able to continue componentisation. Long term
> we'll need something different.
> Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>
> ---

Do we have any thoughts on what might be a longer term solution
here? Is the parent device actually the right thing to pass to
snd_soc_unregister_component, it feels like that is probably not
going to be enough to accurately identify the component?


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