Re: [PATCH V5 4/4] ASoC: fsl_asrc: Fix error with S24_3LE format bitstream in i.MX8

[Nicolin Chen]

Just a small concern...

On Thu, Sep 26, 2019 at 09:29:51AM +0800, Shengjiu Wang wrote:
>  static int fsl_asrc_dma_startup(struct snd_pcm_substream *substream)
>  {
> +
> +	release_pair = false;
> +	ret = snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware);

This set_runtime_hwparams() always returns 0 for now, but if
one day it changes and it fails here, kfree() will be still
ignored although the startup() gets error-out.

We could avoid this if we continue to ignore the return value
like the current code. Or we may check ret at kfree() also?

> +
> +out:
> +	dma_release_channel(tmp_chan);
> +
> +dma_chan_err:
> +	fsl_asrc_release_pair(pair);
> +
> +req_pair_err:
> +	if (release_pair)
> +		kfree(pair);
> +
> +	return ret;
>  }