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From:   Shengjiu Wang <shengjiu.wang@nxp.com>
To:     timur@kernel.org, nicoleotsuka@gmail.com, Xiubo.Lee@gmail.com,
        festevam@gmail.com, broonie@kernel.org, perex@perex.cz,
        tiwai@suse.com, alsa-devel@alsa-project.org
Cc:     linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] ASoC: fsl_spdif: Fix error handler with pm_runtime_enable
Date:   Fri, 11 Jun 2021 14:18:38 +0800
Message-Id: <1623392318-26304-1-git-send-email-shengjiu.wang@nxp.com>
Precedence: bulk

There is error message when defer probe happens:

fsl-spdif-dai 2dab0000.spdif: Unbalanced pm_runtime_enable!

Fix the error handler with pm_runtime_enable and add
fsl_spdif_remove() for pm_runtime_disable.

Fixes: 9cb2b3796e08 ("ASoC: fsl_spdif: Add pm runtime function")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
 sound/soc/fsl/fsl_spdif.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index 2a76714eb8e6..76a7c9581333 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -1441,16 +1441,29 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 					      &spdif_priv->cpu_dai_drv, 1);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register DAI: %d\n", ret);
-		return ret;
+		goto err_pm_disable;
 	}
 
 	ret = imx_pcm_dma_init(pdev, IMX_SPDIF_DMABUF_SIZE);
-	if (ret && ret != -EPROBE_DEFER)
-		dev_err(&pdev->dev, "imx_pcm_dma_init failed: %d\n", ret);
+	if (ret) {
+		dev_err_probe(&pdev->dev, ret, "imx_pcm_dma_init failed\n");
+		goto err_pm_disable;
+	}
+
+	return ret;
 
+err_pm_disable:
+	pm_runtime_disable(&pdev->dev);
 	return ret;
 }
 
+static int fsl_spdif_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
 #ifdef CONFIG_PM
 static int fsl_spdif_runtime_suspend(struct device *dev)
 {
@@ -1554,6 +1567,7 @@ static struct platform_driver fsl_spdif_driver = {
 		.pm = &fsl_spdif_pm,
 	},
 	.probe = fsl_spdif_probe,
+	.remove = fsl_spdif_remove,
 };
 
 module_platform_driver(fsl_spdif_driver);
-- 
2.27.0