[alsa-devel] [PATCH] sound: atom: fix a missing check of snd_pcm_lib_malloc_pages

[Pierre-Louis Bossart]

On 12/25/18 8:29 PM, Kangjie Lu wrote:
> snd_pcm_lib_malloc_pages() may fail, so let's check its status and
> return its error code upstream.

Acked-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>


>
> Signed-off-by: Kangjie Lu <kjlu at umn.edu>
> ---
>   sound/soc/intel/atom/sst-mfld-platform-pcm.c | 8 +++++++-
>   1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
> index afc559866095..91a2436ce952 100644
> --- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
> +++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
> @@ -399,7 +399,13 @@ static int sst_media_hw_params(struct snd_pcm_substream *substream,
>   				struct snd_pcm_hw_params *params,
>   				struct snd_soc_dai *dai)
>   {
> -	snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
> +	int ret;
> +
> +	ret =
> +		snd_pcm_lib_malloc_pages(substream,
> +				params_buffer_bytes(params));
> +	if (ret)
> +		return ret;
>   	memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
>   	return 0;
>   }