[alsa-devel] Memory and Cycles overhead in <snd_soc_init>

[Lars-Peter Clausen]

On 02/10/2015 12:58 PM, Bhaskara rao Budiredla wrote:
> Hi - May I know the purpose of the call to snd_soc_init( ) from kernel_init
> thread? snd_soc_init( ) is trying to register a dummy platform device
> "snd-soc-dummy" containing (dummy_codec/dummy_platform) and a sound card
> device. Neither of those devices are added to platform bus before they are
> making a call to platform_driver_register( ). Due to that platform_match(
> ) will fail and they will not be added to platform bus . Thus,
> snd_soc_init( ) is not doing any useful task during kernel boot time.
>
> Could someone help me if my understanding is correct? If I am correct,
> shall we remove the call to snd_soc_init( ) in kernel_init thread to save
> boot time and memory? Otherwise please suggest me where those dummy devices
> and sound card gets added to platform bus and the purpose of creating them?

All of the devices and driver registered in snd_soc_init() are used.

- Lars