linux-kernel - [PATCH AUTOSEL 5.10 11/17] ASoC: ti: j721e-evm: Fix unbalanced domain activity tracking during startup

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Date:   Tue, 27 Jul 2021 09:19:32 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Peter Ujfalusi <peter.ujfalusi@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, alsa-devel@...a-project.org
Subject: [PATCH AUTOSEL 5.10 11/17] ASoC: ti: j721e-evm: Fix unbalanced domain activity tracking during startup

From: Peter Ujfalusi <peter.ujfalusi@...il.com>

[ Upstream commit 78d2a05ef22e7b5863b01e073dd6a06b3979bb00 ]

In case of an error within j721e_audio_startup() the domain->active must
be decremented to avoid unbalanced counter.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...il.com>
Link: https://lore.kernel.org/r/20210717122820.1467-2-peter.ujfalusi@gmail.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/ti/j721e-evm.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/sound/soc/ti/j721e-evm.c b/sound/soc/ti/j721e-evm.c
index a7c0484d44ec..017c4ad11ca6 100644
--- a/sound/soc/ti/j721e-evm.c
+++ b/sound/soc/ti/j721e-evm.c
@@ -278,23 +278,29 @@ static int j721e_audio_startup(struct snd_pcm_substream *substream)
 					  j721e_rule_rate, &priv->rate_range,
 					  SNDRV_PCM_HW_PARAM_RATE, -1);
 
-	mutex_unlock(&priv->mutex);
 
 	if (ret)
-		return ret;
+		goto out;
 
 	/* Reset TDM slots to 32 */
 	ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 32);
 	if (ret && ret != -ENOTSUPP)
-		return ret;
+		goto out;
 
 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
 		ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x3, 0x3, 2, 32);
 		if (ret && ret != -ENOTSUPP)
-			return ret;
+			goto out;
 	}
 
-	return 0;
+	if (ret == -ENOTSUPP)
+		ret = 0;
+out:
+	if (ret)
+		domain->active--;
+	mutex_unlock(&priv->mutex);
+
+	return ret;
 }
 
 static int j721e_audio_hw_params(struct snd_pcm_substream *substream,
-- 
2.30.2