[PATCH 0/4] ASoC: stm32: sai: fix device and OF node leaks on probe

[PATCH 0/4] ASoC: stm32: sai: fix device and OF node leaks on probe

[Johan Hovold]

This series fixes device and OF node reference leaks during probe and
a clock prepare imbalance on probe failures.

Included is a related cleanup of an error path.

Johan


Johan Hovold (4):
  ASoC: stm32: sai: fix device leak on probe
  ASoC: stm32: sai: fix clk prepare imbalance on probe failure
  ASoC: stm32: sai: fix OF node leak on probe
  ASoC: stm32: sai: clean up probe error path

 sound/soc/stm/stm32_sai.c     | 14 +++------
 sound/soc/stm/stm32_sai_sub.c | 57 ++++++++++++++++++++++++-----------
 2 files changed, 44 insertions(+), 27 deletions(-)

-- 
2.51.2

[PATCH 1/4] ASoC: stm32: sai: fix device leak on probe

[Johan Hovold]

Make sure to drop the reference taken when looking up the sync provider
device and its driver data during DAI probe on probe failures and on
unbind.

Note that holding a reference to a device does not prevent its driver
data from going away so there is no point in keeping the reference.

Fixes: 7dd0d835582f ("ASoC: stm32: sai: simplify sync modes management")
Fixes: 1c3816a19487 ("ASoC: stm32: sai: add missing put_device()")
Cc: stable@vger.kernel.org	# 4.16: 1c3816a19487
Cc: olivier moysan <olivier.moysan@st.com>
Cc: Wen Yang <yellowriver2010@hotmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/stm/stm32_sai.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/stm/stm32_sai.c b/sound/soc/stm/stm32_sai.c
index fa821e3fb427..7065aeb0e524 100644
--- a/sound/soc/stm/stm32_sai.c
+++ b/sound/soc/stm/stm32_sai.c
@@ -143,6 +143,7 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
 	}
 
 	sai_provider = platform_get_drvdata(pdev);
+	put_device(&pdev->dev);
 	if (!sai_provider) {
 		dev_err(&sai_client->pdev->dev,
 			"SAI sync provider data not found\n");
@@ -159,7 +160,6 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
 	ret = stm32_sai_sync_conf_provider(sai_provider, synco);
 
 error:
-	put_device(&pdev->dev);
 	of_node_put(np_provider);
 	return ret;
 }
-- 
2.51.2

[PATCH 2/4] ASoC: stm32: sai: fix clk prepare imbalance on probe failure

[Johan Hovold]

Make sure to unprepare the parent clock also on probe failures (e.g.
probe deferral).

Fixes: a14bf98c045b ("ASoC: stm32: sai: fix possible circular locking")
Cc: stable@vger.kernel.org	# 5.5
Cc: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/stm/stm32_sai_sub.c | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index 0ae1eae2a59e..7a005b4ad304 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -1634,14 +1634,21 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
 	if (of_property_present(np, "#clock-cells")) {
 		ret = stm32_sai_add_mclk_provider(sai);
 		if (ret < 0)
-			return ret;
+			goto err_unprepare_pclk;
 	} else {
 		sai->sai_mclk = devm_clk_get_optional(&pdev->dev, "MCLK");
-		if (IS_ERR(sai->sai_mclk))
-			return PTR_ERR(sai->sai_mclk);
+		if (IS_ERR(sai->sai_mclk)) {
+			ret = PTR_ERR(sai->sai_mclk);
+			goto err_unprepare_pclk;
+		}
 	}
 
 	return 0;
+
+err_unprepare_pclk:
+	clk_unprepare(sai->pdata->pclk);
+
+	return ret;
 }
 
 static int stm32_sai_sub_probe(struct platform_device *pdev)
@@ -1688,26 +1695,33 @@ static int stm32_sai_sub_probe(struct platform_device *pdev)
 			       IRQF_SHARED, dev_name(&pdev->dev), sai);
 	if (ret) {
 		dev_err(&pdev->dev, "IRQ request returned %d\n", ret);
-		return ret;
+		goto err_unprepare_pclk;
 	}
 
 	if (STM_SAI_PROTOCOL_IS_SPDIF(sai))
 		conf = &stm32_sai_pcm_config_spdif;
 
 	ret = snd_dmaengine_pcm_register(&pdev->dev, conf, 0);
-	if (ret)
-		return dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n");
+	if (ret) {
+		ret = dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n");
+		goto err_unprepare_pclk;
+	}
 
 	ret = snd_soc_register_component(&pdev->dev, &stm32_component,
 					 &sai->cpu_dai_drv, 1);
 	if (ret) {
 		snd_dmaengine_pcm_unregister(&pdev->dev);
-		return ret;
+		goto err_unprepare_pclk;
 	}
 
 	pm_runtime_enable(&pdev->dev);
 
 	return 0;
+
+err_unprepare_pclk:
+	clk_unprepare(sai->pdata->pclk);
+
+	return ret;
 }
 
 static void stm32_sai_sub_remove(struct platform_device *pdev)
-- 
2.51.2

[PATCH 3/4] ASoC: stm32: sai: fix OF node leak on probe

[Johan Hovold]

The reference taken to the sync provider OF node when probing the
platform device is currently only dropped if the set_sync() callback
fails during DAI probe.

Make sure to drop the reference on platform probe failures (e.g. probe
deferral) and on driver unbind.

This also avoids a potential use-after-free in case the DAI is ever
reprobed without first rebinding the platform driver.

Fixes: 5914d285f6b7 ("ASoC: stm32: sai: Add synchronization support")
Fixes: d4180b4c02e7 ("ASoC: stm32: sai: fix set_sync service")
Cc: Olivier Moysan <olivier.moysan@st.com>
Cc: stable@vger.kernel.org      # 4.16: d4180b4c02e7
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/stm/stm32_sai.c     | 12 +++---------
 sound/soc/stm/stm32_sai_sub.c | 23 ++++++++++++++++-------
 2 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/sound/soc/stm/stm32_sai.c b/sound/soc/stm/stm32_sai.c
index 7065aeb0e524..00cf24ceca2d 100644
--- a/sound/soc/stm/stm32_sai.c
+++ b/sound/soc/stm/stm32_sai.c
@@ -138,7 +138,6 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
 	if (!pdev) {
 		dev_err(&sai_client->pdev->dev,
 			"Device not found for node %pOFn\n", np_provider);
-		of_node_put(np_provider);
 		return -ENODEV;
 	}
 
@@ -147,21 +146,16 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
 	if (!sai_provider) {
 		dev_err(&sai_client->pdev->dev,
 			"SAI sync provider data not found\n");
-		ret = -EINVAL;
-		goto error;
+		return -EINVAL;
 	}
 
 	/* Configure sync client */
 	ret = stm32_sai_sync_conf_client(sai_client, synci);
 	if (ret < 0)
-		goto error;
+		return ret;
 
 	/* Configure sync provider */
-	ret = stm32_sai_sync_conf_provider(sai_provider, synco);
-
-error:
-	of_node_put(np_provider);
-	return ret;
+	return stm32_sai_sync_conf_provider(sai_provider, synco);
 }
 
 static int stm32_sai_get_parent_clk(struct stm32_sai_data *sai)
diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index 7a005b4ad304..5ae4d2577f28 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -1586,7 +1586,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
 				dev_err(&pdev->dev,
 					"External synchro not supported\n");
 				of_node_put(args.np);
-				return -EINVAL;
+				ret = -EINVAL;
+				goto err_put_sync_provider;
 			}
 			sai->sync = SAI_SYNC_EXTERNAL;
 
@@ -1595,7 +1596,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
 			    (sai->synci > (SAI_GCR_SYNCIN_MAX + 1))) {
 				dev_err(&pdev->dev, "Wrong SAI index\n");
 				of_node_put(args.np);
-				return -EINVAL;
+				ret = -EINVAL;
+				goto err_put_sync_provider;
 			}
 
 			if (of_property_match_string(args.np, "compatible",
@@ -1609,7 +1611,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
 			if (!sai->synco) {
 				dev_err(&pdev->dev, "Unknown SAI sub-block\n");
 				of_node_put(args.np);
-				return -EINVAL;
+				ret = -EINVAL;
+				goto err_put_sync_provider;
 			}
 		}
 
@@ -1619,13 +1622,15 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
 
 	of_node_put(args.np);
 	sai->sai_ck = devm_clk_get(&pdev->dev, "sai_ck");
-	if (IS_ERR(sai->sai_ck))
-		return dev_err_probe(&pdev->dev, PTR_ERR(sai->sai_ck),
-				     "Missing kernel clock sai_ck\n");
+	if (IS_ERR(sai->sai_ck)) {
+		ret = dev_err_probe(&pdev->dev, PTR_ERR(sai->sai_ck),
+				    "Missing kernel clock sai_ck\n");
+		goto err_put_sync_provider;
+	}
 
 	ret = clk_prepare(sai->pdata->pclk);
 	if (ret < 0)
-		return ret;
+		goto err_put_sync_provider;
 
 	if (STM_SAI_IS_F4(sai->pdata))
 		return 0;
@@ -1647,6 +1652,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
 
 err_unprepare_pclk:
 	clk_unprepare(sai->pdata->pclk);
+err_put_sync_provider:
+	of_node_put(sai->np_sync_provider);
 
 	return ret;
 }
@@ -1720,6 +1727,7 @@ static int stm32_sai_sub_probe(struct platform_device *pdev)
 
 err_unprepare_pclk:
 	clk_unprepare(sai->pdata->pclk);
+	of_node_put(sai->np_sync_provider);
 
 	return ret;
 }
@@ -1732,6 +1740,7 @@ static void stm32_sai_sub_remove(struct platform_device *pdev)
 	snd_dmaengine_pcm_unregister(&pdev->dev);
 	snd_soc_unregister_component(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
+	of_node_put(sai->np_sync_provider);
 }
 
 static int stm32_sai_sub_suspend(struct device *dev)
-- 
2.51.2

[PATCH 4/4] ASoC: stm32: sai: clean up probe error path

[Johan Hovold]

Use an error label for deregistering also the PCM DMA for consistency.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/stm/stm32_sai_sub.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index 5ae4d2577f28..450e1585edee 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -1716,15 +1716,15 @@ static int stm32_sai_sub_probe(struct platform_device *pdev)
 
 	ret = snd_soc_register_component(&pdev->dev, &stm32_component,
 					 &sai->cpu_dai_drv, 1);
-	if (ret) {
-		snd_dmaengine_pcm_unregister(&pdev->dev);
-		goto err_unprepare_pclk;
-	}
+	if (ret)
+		goto err_deregister_pcm_dma;
 
 	pm_runtime_enable(&pdev->dev);
 
 	return 0;
 
+err_deregister_pcm_dma:
+	snd_dmaengine_pcm_unregister(&pdev->dev);
 err_unprepare_pclk:
 	clk_unprepare(sai->pdata->pclk);
 	of_node_put(sai->np_sync_provider);
-- 
2.51.2

Re: [PATCH 1/4] ASoC: stm32: sai: fix device leak on probe

[Olivier MOYSAN]

Hi Johan,

Thanks for your fixes.

On 11/24/25 11:49, Johan Hovold wrote:
> Make sure to drop the reference taken when looking up the sync provider
> device and its driver data during DAI probe on probe failures and on
> unbind.
> 
> Note that holding a reference to a device does not prevent its driver
> data from going away so there is no point in keeping the reference.
> 
> Fixes: 7dd0d835582f ("ASoC: stm32: sai: simplify sync modes management")
> Fixes: 1c3816a19487 ("ASoC: stm32: sai: add missing put_device()")
> Cc: stable@vger.kernel.org	# 4.16: 1c3816a19487
> Cc: olivier moysan <olivier.moysan@st.com>
> Cc: Wen Yang <yellowriver2010@hotmail.com>
> Signed-off-by: Johan Hovold <johan@kernel.org>

Reviewed-by: olivier moysan <olivier.moysan@foss.st.com>

> ---
>   sound/soc/stm/stm32_sai.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/stm/stm32_sai.c b/sound/soc/stm/stm32_sai.c
> index fa821e3fb427..7065aeb0e524 100644
> --- a/sound/soc/stm/stm32_sai.c
> +++ b/sound/soc/stm/stm32_sai.c
> @@ -143,6 +143,7 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
>   	}
>   
>   	sai_provider = platform_get_drvdata(pdev);
> +	put_device(&pdev->dev);
>   	if (!sai_provider) {
>   		dev_err(&sai_client->pdev->dev,
>   			"SAI sync provider data not found\n");
> @@ -159,7 +160,6 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
>   	ret = stm32_sai_sync_conf_provider(sai_provider, synco);
>   
>   error:
> -	put_device(&pdev->dev);
>   	of_node_put(np_provider);
>   	return ret;
>   }

Re: [PATCH 2/4] ASoC: stm32: sai: fix clk prepare imbalance on probe failure

[Olivier MOYSAN]

On 11/24/25 11:49, Johan Hovold wrote:
> Make sure to unprepare the parent clock also on probe failures (e.g.
> probe deferral).
> 
> Fixes: a14bf98c045b ("ASoC: stm32: sai: fix possible circular locking")
> Cc: stable@vger.kernel.org	# 5.5
> Cc: Olivier Moysan <olivier.moysan@st.com>
> Signed-off-by: Johan Hovold <johan@kernel.org>

Reviewed-by: olivier moysan <olivier.moysan@foss.st.com>

Olivier

> ---
>   sound/soc/stm/stm32_sai_sub.c | 28 +++++++++++++++++++++-------
>   1 file changed, 21 insertions(+), 7 deletions(-)
> 
> diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
> index 0ae1eae2a59e..7a005b4ad304 100644
> --- a/sound/soc/stm/stm32_sai_sub.c
> +++ b/sound/soc/stm/stm32_sai_sub.c
> @@ -1634,14 +1634,21 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
>   	if (of_property_present(np, "#clock-cells")) {
>   		ret = stm32_sai_add_mclk_provider(sai);
>   		if (ret < 0)
> -			return ret;
> +			goto err_unprepare_pclk;
>   	} else {
>   		sai->sai_mclk = devm_clk_get_optional(&pdev->dev, "MCLK");
> -		if (IS_ERR(sai->sai_mclk))
> -			return PTR_ERR(sai->sai_mclk);
> +		if (IS_ERR(sai->sai_mclk)) {
> +			ret = PTR_ERR(sai->sai_mclk);
> +			goto err_unprepare_pclk;
> +		}
>   	}
>   
>   	return 0;
> +
> +err_unprepare_pclk:
> +	clk_unprepare(sai->pdata->pclk);
> +
> +	return ret;
>   }
>   
>   static int stm32_sai_sub_probe(struct platform_device *pdev)
> @@ -1688,26 +1695,33 @@ static int stm32_sai_sub_probe(struct platform_device *pdev)
>   			       IRQF_SHARED, dev_name(&pdev->dev), sai);
>   	if (ret) {
>   		dev_err(&pdev->dev, "IRQ request returned %d\n", ret);
> -		return ret;
> +		goto err_unprepare_pclk;
>   	}
>   
>   	if (STM_SAI_PROTOCOL_IS_SPDIF(sai))
>   		conf = &stm32_sai_pcm_config_spdif;
>   
>   	ret = snd_dmaengine_pcm_register(&pdev->dev, conf, 0);
> -	if (ret)
> -		return dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n");
> +	if (ret) {
> +		ret = dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n");
> +		goto err_unprepare_pclk;
> +	}
>   
>   	ret = snd_soc_register_component(&pdev->dev, &stm32_component,
>   					 &sai->cpu_dai_drv, 1);
>   	if (ret) {
>   		snd_dmaengine_pcm_unregister(&pdev->dev);
> -		return ret;
> +		goto err_unprepare_pclk;
>   	}
>   
>   	pm_runtime_enable(&pdev->dev);
>   
>   	return 0;
> +
> +err_unprepare_pclk:
> +	clk_unprepare(sai->pdata->pclk);
> +
> +	return ret;
>   }
>   
>   static void stm32_sai_sub_remove(struct platform_device *pdev)

Re: [PATCH 3/4] ASoC: stm32: sai: fix OF node leak on probe

[Olivier MOYSAN]

On 11/24/25 11:49, Johan Hovold wrote:
> The reference taken to the sync provider OF node when probing the
> platform device is currently only dropped if the set_sync() callback
> fails during DAI probe.
> 
> Make sure to drop the reference on platform probe failures (e.g. probe
> deferral) and on driver unbind.
> 
> This also avoids a potential use-after-free in case the DAI is ever
> reprobed without first rebinding the platform driver.
> 
> Fixes: 5914d285f6b7 ("ASoC: stm32: sai: Add synchronization support")
> Fixes: d4180b4c02e7 ("ASoC: stm32: sai: fix set_sync service")
> Cc: Olivier Moysan <olivier.moysan@st.com>

Reviewed-by: olivier moysan <olivier.moysan@foss.st.com>

Olivier

> Cc: stable@vger.kernel.org      # 4.16: d4180b4c02e7
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---
>   sound/soc/stm/stm32_sai.c     | 12 +++---------
>   sound/soc/stm/stm32_sai_sub.c | 23 ++++++++++++++++-------
>   2 files changed, 19 insertions(+), 16 deletions(-)
> 
> diff --git a/sound/soc/stm/stm32_sai.c b/sound/soc/stm/stm32_sai.c
> index 7065aeb0e524..00cf24ceca2d 100644
> --- a/sound/soc/stm/stm32_sai.c
> +++ b/sound/soc/stm/stm32_sai.c
> @@ -138,7 +138,6 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
>   	if (!pdev) {
>   		dev_err(&sai_client->pdev->dev,
>   			"Device not found for node %pOFn\n", np_provider);
> -		of_node_put(np_provider);
>   		return -ENODEV;
>   	}
>   
> @@ -147,21 +146,16 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
>   	if (!sai_provider) {
>   		dev_err(&sai_client->pdev->dev,
>   			"SAI sync provider data not found\n");
> -		ret = -EINVAL;
> -		goto error;
> +		return -EINVAL;
>   	}
>   
>   	/* Configure sync client */
>   	ret = stm32_sai_sync_conf_client(sai_client, synci);
>   	if (ret < 0)
> -		goto error;
> +		return ret;
>   
>   	/* Configure sync provider */
> -	ret = stm32_sai_sync_conf_provider(sai_provider, synco);
> -
> -error:
> -	of_node_put(np_provider);
> -	return ret;
> +	return stm32_sai_sync_conf_provider(sai_provider, synco);
>   }
>   
>   static int stm32_sai_get_parent_clk(struct stm32_sai_data *sai)
> diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
> index 7a005b4ad304..5ae4d2577f28 100644
> --- a/sound/soc/stm/stm32_sai_sub.c
> +++ b/sound/soc/stm/stm32_sai_sub.c
> @@ -1586,7 +1586,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
>   				dev_err(&pdev->dev,
>   					"External synchro not supported\n");
>   				of_node_put(args.np);
> -				return -EINVAL;
> +				ret = -EINVAL;
> +				goto err_put_sync_provider;
>   			}
>   			sai->sync = SAI_SYNC_EXTERNAL;
>   
> @@ -1595,7 +1596,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
>   			    (sai->synci > (SAI_GCR_SYNCIN_MAX + 1))) {
>   				dev_err(&pdev->dev, "Wrong SAI index\n");
>   				of_node_put(args.np);
> -				return -EINVAL;
> +				ret = -EINVAL;
> +				goto err_put_sync_provider;
>   			}
>   
>   			if (of_property_match_string(args.np, "compatible",
> @@ -1609,7 +1611,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
>   			if (!sai->synco) {
>   				dev_err(&pdev->dev, "Unknown SAI sub-block\n");
>   				of_node_put(args.np);
> -				return -EINVAL;
> +				ret = -EINVAL;
> +				goto err_put_sync_provider;
>   			}
>   		}
>   
> @@ -1619,13 +1622,15 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
>   
>   	of_node_put(args.np);
>   	sai->sai_ck = devm_clk_get(&pdev->dev, "sai_ck");
> -	if (IS_ERR(sai->sai_ck))
> -		return dev_err_probe(&pdev->dev, PTR_ERR(sai->sai_ck),
> -				     "Missing kernel clock sai_ck\n");
> +	if (IS_ERR(sai->sai_ck)) {
> +		ret = dev_err_probe(&pdev->dev, PTR_ERR(sai->sai_ck),
> +				    "Missing kernel clock sai_ck\n");
> +		goto err_put_sync_provider;
> +	}
>   
>   	ret = clk_prepare(sai->pdata->pclk);
>   	if (ret < 0)
> -		return ret;
> +		goto err_put_sync_provider;
>   
>   	if (STM_SAI_IS_F4(sai->pdata))
>   		return 0;
> @@ -1647,6 +1652,8 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev,
>   
>   err_unprepare_pclk:
>   	clk_unprepare(sai->pdata->pclk);
> +err_put_sync_provider:
> +	of_node_put(sai->np_sync_provider);
>   
>   	return ret;
>   }
> @@ -1720,6 +1727,7 @@ static int stm32_sai_sub_probe(struct platform_device *pdev)
>   
>   err_unprepare_pclk:
>   	clk_unprepare(sai->pdata->pclk);
> +	of_node_put(sai->np_sync_provider);
>   
>   	return ret;
>   }
> @@ -1732,6 +1740,7 @@ static void stm32_sai_sub_remove(struct platform_device *pdev)
>   	snd_dmaengine_pcm_unregister(&pdev->dev);
>   	snd_soc_unregister_component(&pdev->dev);
>   	pm_runtime_disable(&pdev->dev);
> +	of_node_put(sai->np_sync_provider);
>   }
>   
>   static int stm32_sai_sub_suspend(struct device *dev)

Re: [PATCH 4/4] ASoC: stm32: sai: clean up probe error path

[Olivier MOYSAN]

On 11/24/25 11:49, Johan Hovold wrote:
> Use an error label for deregistering also the PCM DMA for consistency.
> 
> Signed-off-by: Johan Hovold <johan@kernel.org>

Reviewed-by: olivier moysan <olivier.moysan@foss.st.com>

Olivier

> ---
>   sound/soc/stm/stm32_sai_sub.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
> index 5ae4d2577f28..450e1585edee 100644
> --- a/sound/soc/stm/stm32_sai_sub.c
> +++ b/sound/soc/stm/stm32_sai_sub.c
> @@ -1716,15 +1716,15 @@ static int stm32_sai_sub_probe(struct platform_device *pdev)
>   
>   	ret = snd_soc_register_component(&pdev->dev, &stm32_component,
>   					 &sai->cpu_dai_drv, 1);
> -	if (ret) {
> -		snd_dmaengine_pcm_unregister(&pdev->dev);
> -		goto err_unprepare_pclk;
> -	}
> +	if (ret)
> +		goto err_deregister_pcm_dma;
>   
>   	pm_runtime_enable(&pdev->dev);
>   
>   	return 0;
>   
> +err_deregister_pcm_dma:
> +	snd_dmaengine_pcm_unregister(&pdev->dev);
>   err_unprepare_pclk:
>   	clk_unprepare(sai->pdata->pclk);
>   	of_node_put(sai->np_sync_provider);

Re: [PATCH 0/4] ASoC: stm32: sai: fix device and OF node leaks on probe

[Mark Brown]

On Mon, 24 Nov 2025 11:49:04 +0100, Johan Hovold wrote:
> This series fixes device and OF node reference leaks during probe and
> a clock prepare imbalance on probe failures.
> 
> Included is a related cleanup of an error path.
> 
> Johan
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/4] ASoC: stm32: sai: fix device leak on probe
      commit: e26ff429eaf10c4ef1bc3dabd9bf27eb54b7e1f4
[2/4] ASoC: stm32: sai: fix clk prepare imbalance on probe failure
      commit: 312ec2f0d9d1a5656f76d770bbf1d967e9289aa7
[3/4] ASoC: stm32: sai: fix OF node leak on probe
      commit: 23261f0de09427367e99f39f588e31e2856a690e
[4/4] ASoC: stm32: sai: clean up probe error path
      commit: 3a03de362975398b39d4c6df7325ccb982026a8f

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

Re: [PATCH 0/4] ASoC: stm32: sai: fix device and OF node leaks on probe

[Gabor Juhos]

Hello Mark,

2025. 11. 25. 20:22 keltezéssel, Mark Brown írta:
> On Mon, 24 Nov 2025 11:49:04 +0100, Johan Hovold wrote:
>> This series fixes device and OF node reference leaks during probe and
>> a clock prepare imbalance on probe failures.
>>
>> Included is a related cleanup of an error path.
>>
>> Johan
>>
>> [...]
> 
> Applied to
> 
>    https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

It seems that the SPI tree is not the correct place for this series.

Regards,
Gabor