release/5.2.40/ASoC-fsl_sai-Fix-exiting-path-on-probing-failure.patch

From 95a7b7018abb924aa8fd334dd4876121ad5dfe60 Mon Sep 17 00:00:00 2001
From: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Date: Wed, 5 Feb 2020 18:04:36 +0200
Subject: [PATCH] ASoC: fsl_sai: Fix exiting path on probing failure

commit d1520889782dff58610c0b6b54d4cf3211ceb690 upstream.

If the imx-sdma driver is built as a module, the fsl-sai device doesn't
disable on probing failure, which causes the warning in the next probing:

==================================================================
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
==================================================================

Disabling the device properly fixes the issue.

Fixes: 812ad463e089 ("ASoC: fsl_sai: Add support for runtime pm")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Link: https://lore.kernel.org/r/20200205160436.3813642-1-oleksandr.suvorov@toradex.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 8593269156bd..5e8078ba0a5d 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -907,12 +907,24 @@ static int fsl_sai_probe(struct platform_device *pdev)
 	ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
 			&fsl_sai_dai, 1);
 	if (ret)
-		return ret;
+		goto err_pm_disable;
 
-	if (sai->sai_on_imx)
-		return imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
-	else
-		return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (sai->sai_on_imx) {
+		ret = imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
+		if (ret)
+			goto err_pm_disable;
+	} else {
+		ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+		if (ret)
+			goto err_pm_disable;
+	}
+
+	return ret;
+
+err_pm_disable:
+	pm_runtime_disable(&pdev->dev);
+
+	return ret;
 }
 
 static int fsl_sai_remove(struct platform_device *pdev)
-- 
2.7.4