[alsa-devel] [PATCH v6 10/15] ASoC: hdac_hdmi: Fix possible memory leak in hw_params

[Mark Brown]

On Fri, Feb 12, 2016 at 07:46:10AM +0530, Subhransu S. Prusty wrote:
> It's possible for hw_params to be called two times. So add NULL
> check to prevent memory leak.

Another fix?

> -	dd = kzalloc(sizeof(*dd), GFP_KERNEL);
> -	if (!dd)
> -		return -ENOMEM;
> +	dd = (struct hdac_ext_dma_params *)
> +		snd_soc_dai_get_dma_data(dai, substream);

If you need to cast away from void * that suggests a problem and it'd
look a lot neater too.
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