[PATCH] ASoC: fsl_sai: Fix exiting path on probing failure

[Oleksandr Suvorov]

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.suvo...@toradex.com>
---

 sound/soc/fsl/fsl_sai.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 8c3ea7300972..9d436b0c5718 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1020,12 +1020,24 @@ 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->soc_data->use_imx_pcm)
-               return imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
-       else
-               return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+       if (sai->soc_data->use_imx_pcm) {
+               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)
-- 
2.24.1