Re: [PATCH 3/8] ASoC: soc-pcm: direct copy at snd_soc_set_runtime_hwparams()

[Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>]

On 3/4/21 6:59 PM, Kuninori Morimoto wrote:
> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> 
> snd_soc_set_runtime_hwparams() is called from each driver
> to initialize hw parameters,
> but coping each parameters one-by-one.
> 
> Current code is not copying all parameters, but no big effect
> if we do it. This patch copies all parameters by simple code.
> 
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> ---
>   sound/soc/soc-pcm.c | 11 ++---------
>   1 file changed, 2 insertions(+), 9 deletions(-)
> 
> diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
> index 60e688b103d8..6f2de27cf18f 100644
> --- a/sound/soc/soc-pcm.c
> +++ b/sound/soc/soc-pcm.c
> @@ -300,15 +300,8 @@ bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
>   int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
>   	const struct snd_pcm_hardware *hw)
>   {
> -	struct snd_pcm_runtime *runtime = substream->runtime;
> -	runtime->hw.info = hw->info;
> -	runtime->hw.formats = hw->formats;
> -	runtime->hw.period_bytes_min = hw->period_bytes_min;
> -	runtime->hw.period_bytes_max = hw->period_bytes_max;
> -	runtime->hw.periods_min = hw->periods_min;
> -	runtime->hw.periods_max = hw->periods_max;
> -	runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
> -	runtime->hw.fifo_size = hw->fifo_size;
> +	substream->runtime->hw = *hw;

This dates from commit db2a416556af0 in 2006 :-)

what was specifically excluded is the information on rates and channels.

Liam, any memories if this was intentional?