Re: [PATCH V2] ASoC: fsl_asrc: add constraint for the asrc of older version

On Fri, Mar 01, 2019 at 08:37:08AM +0000, S.j. Wang wrote:

There is constraint for the channel number setting on the

nit: "a constraint"

asrc of older version (e.g. imx35), the channel number should
be even, odd number isn't valid.

+static int fsl_asrc_dai_startup(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct fsl_asrc *asrc_priv = snd_soc_dai_get_drvdata(dai);
+
+	/* channel_bits = 3 means older version on imx35*/

Space between '5' and '*'. And better to make it clear:

	/* Odd channel number is not valid for older ASRC (channel_bits==3) */

+	if (asrc_priv->channel_bits == 3)
+		snd_pcm_hw_constraint_step(substream->runtime, 0,
+					   SNDRV_PCM_HW_PARAM_CHANNELS, 2);

For your next version,

Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>

Cheers