[PATCH 18/24] ASoC: soc-component: add snd_soc_component_compr_copy()

[Ranjani Sridharan]

On Mon, 2020-06-01 at 10:37 +0900, Kuninori Morimoto wrote:
> From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
> 
> component related function should be implemented at
> soc-component.c.
> This patch adds snd_soc_component_compr_copy().
> 
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
> ---
>  include/sound/soc-component.h |  2 ++
>  sound/soc/soc-component.c     | 21 +++++++++++++++++++++
>  sound/soc/soc-compress.c      | 13 ++-----------
>  3 files changed, 25 insertions(+), 11 deletions(-)
> 
> diff --git a/include/sound/soc-component.h b/include/sound/soc-
> component.h
> index 0e05aedaee05..255014fe6264 100644
> --- a/include/sound/soc-component.h
> +++ b/include/sound/soc-component.h
> @@ -452,6 +452,8 @@ int snd_soc_component_compr_get_codec_caps(struct
> snd_compr_stream *cstream,
>  int snd_soc_component_compr_ack(struct snd_compr_stream *cstream,
> size_t bytes);
>  int snd_soc_component_compr_pointer(struct snd_compr_stream
> *cstream,
>  				    struct snd_compr_tstamp *tstamp);
> +int snd_soc_component_compr_copy(struct snd_compr_stream *cstream,
> +				 char __user *buf, size_t count);
>  
>  int snd_soc_pcm_component_pointer(struct snd_pcm_substream
> *substream);
>  int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
> diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
> index 8a24d6f3572a..6a47255767a0 100644
> --- a/sound/soc/soc-component.c
> +++ b/sound/soc/soc-component.c
> @@ -570,6 +570,27 @@ int snd_soc_component_compr_pointer(struct
> snd_compr_stream *cstream,
>  }
>  EXPORT_SYMBOL_GPL(snd_soc_component_compr_pointer);
>  
> +int snd_soc_component_compr_copy(struct snd_compr_stream *cstream,
> +				 char __user *buf, size_t count)
> +{
> +	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
> +	struct snd_soc_component *component;
> +	int i, ret;
> +
> +	for_each_rtd_components(rtd, i, component) {
> +		if (component->driver->compress_ops &&
> +		    component->driver->compress_ops->copy) {
> +			ret = component->driver->compress_ops->copy(
> +				component, cstream, buf, count);
> +			if (ret < 0)
> +				return soc_component_ret(component,
> ret);
Same here as well. Should we return in all cases?

Thanks,
Ranjani