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;
> }
