linux-kernel - Re: [PATCH] ASoC: cs35l56: Remove NULL check from cs35l56_sdw_dai_set

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Date:   Thu, 1 Jun 2023 09:08:29 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Richard Fitzgerald <rf@...nsource.cirrus.com>, broonie@...nel.org
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        patches@...nsource.cirrus.com
Subject: Re: [PATCH] ASoC: cs35l56: Remove NULL check from
 cs35l56_sdw_dai_set_stream()



On 6/1/23 07:49, Richard Fitzgerald wrote:
> The dma pointer must be set to the passed stream pointer, even
> if that pointer is NULL.
> 
> Fixes: e49611252900 ("ASoC: cs35l56: Add driver for Cirrus Logic CS35L56")
> Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>

Yep, good catch, this is what we have for other codecs.

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

> ---
>  sound/soc/codecs/cs35l56.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
> index 3c07bd1e959e..c03f9d3c9a13 100644
> --- a/sound/soc/codecs/cs35l56.c
> +++ b/sound/soc/codecs/cs35l56.c
> @@ -704,9 +704,6 @@ static int cs35l56_sdw_dai_hw_free(struct snd_pcm_substream *substream,
>  static int cs35l56_sdw_dai_set_stream(struct snd_soc_dai *dai,
>  				      void *sdw_stream, int direction)
>  {
> -	if (!sdw_stream)
> -		return 0;
> -
>  	snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
>  
>  	return 0;