diff mbox series

[03/14] ASoC: soc-pcm: indicate error message at soc_pcm_prepare()

Message ID 87o8flutbn.wl-kuninori.morimoto.gx@renesas.com
State Accepted
Commit dab7eeb4045cce074e083be1f3092d7390d6cfb2
Headers show
Series ASoC: tidyup error message timing | expand

Commit Message

Kuninori Morimoto March 15, 2021, 12:57 a.m. UTC 
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Indicating error message when failed case is very useful for debuging.
In many case, its style is like below.

	int function(...)
	{
		...
		return ret;
	}

	int caller(...)
	{
		...
		ret = function(...);
		if (ret < 0)
			dev_err(...)
		...
	}

This is not so bad, but in this style *each caller* needs to indicate
duplicate same error message, and some caller is forgetting to do it.
And caller can't indicate detail function() error information.

If function() indicates error message, we can get same and
detail information without forgot.

	int function(...)
	{
		...
		if (ret < 0)
			dev_err(...)

		return ret;
	}

	int caller(...)
	{
		...
		ret = function(...);
		...
	}

This patch follow above style at soc_pcm_prepare().

By this patch, dpcm_fe/be_dai_prepare(...)
temporary lacks FE/BE error info, but it will reborn soon.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/soc-pcm.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index a956d1852ade..82daf79f5b3f 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -852,6 +852,10 @@  static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 
 out:
 	mutex_unlock(&rtd->card->pcm_mutex);
+
+	if (ret < 0)
+		dev_err(rtd->dev, "ASoC: %s() failed (%d)\n", __func__, ret);
+
 	return ret;
 }
 
@@ -2234,11 +2238,8 @@  int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
 			be->dai_link->name);
 
 		ret = soc_pcm_prepare(be_substream);
-		if (ret < 0) {
-			dev_err(be->dev, "ASoC: backend prepare failed %d\n",
-				ret);
+		if (ret < 0)
 			break;
-		}
 
 		be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
 	}
@@ -2270,11 +2271,8 @@  static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
 
 	/* call prepare on the frontend */
 	ret = soc_pcm_prepare(substream);
-	if (ret < 0) {
-		dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
-			fe->dai_link->name);
+	if (ret < 0)
 		goto out;
-	}
 
 	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;