linux-kernel - [PATCH v1] ASoC: mediatek: mt8186-rt5682: primary_codec

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Date:   Sun,  8 Jan 2023 01:59:33 +0800
From:   Ajye Huang <ajye_huang@...pal.corp-partner.google.com>
To:     linux-kernel@...r.kernel.org
Cc:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        tongjian <tongjian@...qin.corp-partner.google.com>,
        linux-mediatek@...ts.infradead.org,
        "chunxu . li" <chunxu.li@...iatek.com>,
        Takashi Iwai <tiwai@...e.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Ajye Huang <ajye_huang@...pal.corp-partner.google.com>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>, linux-arm-kernel@...ts.infradead.org,
        alsa-devel@...a-project.org, kernel test robot <lkp@...el.com>,
        Dan Carpenter <error27@...il.com>
Subject: [PATCH v1] ASoC: mediatek: mt8186-rt5682: primary_codec_init() warn: missing error code? 'ret'

The function primary_codec_init() should return 0 if dmic_sel is null.

Here is the warning message reported by 0-DAY CI Kernel Test Service.

smatch warnings:
primary_codec_init() warn: missing error code? 'ret'
...
2022-11-02  141       if (!priv->dmic_sel) {
2022-11-02  142               dev_info(card->dev, "dmic_sel is null\n");
2022-11-02 @143               return ret;

return -EIVNAL;?  return 0;?

2022-11-02  144       }

Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <error27@...il.com>
Signed-off-by: Ajye Huang <ajye_huang@...pal.corp-partner.google.com>

---
 sound/soc/mediatek/mt8186/mt8186-mt6366-rt1019-rt5682s.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/mediatek/mt8186/mt8186-mt6366-rt1019-rt5682s.c b/sound/soc/mediatek/mt8186/mt8186-mt6366-rt1019-rt5682s.c
index af44e331dae8..b333950aa3c3 100644
--- a/sound/soc/mediatek/mt8186/mt8186-mt6366-rt1019-rt5682s.c
+++ b/sound/soc/mediatek/mt8186/mt8186-mt6366-rt1019-rt5682s.c
@@ -140,7 +140,7 @@ static int primary_codec_init(struct snd_soc_pcm_runtime *rtd)
 
 	if (!priv->dmic_sel) {
 		dev_info(card->dev, "dmic_sel is null\n");
-		return ret;
+		return 0;
 	}
 
 	ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
-- 
2.25.1