PCI: stm32: Re-use existing error handling path in stm32_pcie_probe()

[PATCH] PCI: stm32: Re-use existing error handling path in stm32_pcie_probe()

Posted by Christophe JAILLET 2 days, 5 hours ago

An error handling path is already available, so use it instead of hand
writing the same code.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/pci/controller/dwc/pcie-stm32.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-stm32.c b/drivers/pci/controller/dwc/pcie-stm32.c
index 964fa6f674c8..96a5fb893af4 100644
--- a/drivers/pci/controller/dwc/pcie-stm32.c
+++ b/drivers/pci/controller/dwc/pcie-stm32.c
@@ -287,18 +287,16 @@ static int stm32_pcie_probe(struct platform_device *pdev)
 
 	ret = pm_runtime_set_active(dev);
 	if (ret < 0) {
-		clk_disable_unprepare(stm32_pcie->clk);
-		stm32_remove_pcie_port(stm32_pcie);
-		return dev_err_probe(dev, ret, "Failed to activate runtime PM\n");
+		dev_err_probe(dev, ret, "Failed to activate runtime PM\n");
+		goto err_disable_clk;
 	}
 
 	pm_runtime_no_callbacks(dev);
 
 	ret = devm_pm_runtime_enable(dev);
 	if (ret < 0) {
-		clk_disable_unprepare(stm32_pcie->clk);
-		stm32_remove_pcie_port(stm32_pcie);
-		return dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
+		dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
+		goto err_disable_clk;
 	}
 
 	ret = dw_pcie_host_init(&stm32_pcie->pci.pp);
-- 
2.51.0

Re: [PATCH] PCI: stm32: Re-use existing error handling path in stm32_pcie_probe()

Posted by Bjorn Helgaas 8 hours ago

On Mon, Sep 29, 2025 at 08:19:30PM +0200, Christophe JAILLET wrote:
> An error handling path is already available, so use it instead of hand
> writing the same code.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

The stm32 driver hasn't been merged upstream yet, so I squashed this
into it:

  https://git.kernel.org/cgit/linux/kernel/git/pci/pci.git/commit/?id=fd486e67e88c

Thank you!

> ---
>  drivers/pci/controller/dwc/pcie-stm32.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-stm32.c b/drivers/pci/controller/dwc/pcie-stm32.c
> index 964fa6f674c8..96a5fb893af4 100644
> --- a/drivers/pci/controller/dwc/pcie-stm32.c
> +++ b/drivers/pci/controller/dwc/pcie-stm32.c
> @@ -287,18 +287,16 @@ static int stm32_pcie_probe(struct platform_device *pdev)
>  
>  	ret = pm_runtime_set_active(dev);
>  	if (ret < 0) {
> -		clk_disable_unprepare(stm32_pcie->clk);
> -		stm32_remove_pcie_port(stm32_pcie);
> -		return dev_err_probe(dev, ret, "Failed to activate runtime PM\n");
> +		dev_err_probe(dev, ret, "Failed to activate runtime PM\n");
> +		goto err_disable_clk;
>  	}
>  
>  	pm_runtime_no_callbacks(dev);
>  
>  	ret = devm_pm_runtime_enable(dev);
>  	if (ret < 0) {
> -		clk_disable_unprepare(stm32_pcie->clk);
> -		stm32_remove_pcie_port(stm32_pcie);
> -		return dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
> +		dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
> +		goto err_disable_clk;
>  	}
>  
>  	ret = dw_pcie_host_init(&stm32_pcie->pci.pp);
> -- 
> 2.51.0
> 
>

Re: [PATCH] PCI: stm32: Re-use existing error handling path in stm32_pcie_probe()

Posted by Christian Bruel 15 hours ago

Hi Christophe,

On 9/29/25 20:19, Christophe JAILLET wrote:
> An error handling path is already available, so use it instead of hand
> writing the same code.

This fix is pending:

https://lore.kernel.org/linux-pci/0b8b8cde-d273-442c-8537-3fa95885476b@foss.st.com/

Bjorn, Manivannan, gentle ping

thank you

Christian

> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
>   drivers/pci/controller/dwc/pcie-stm32.c | 10 ++++------
>   1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-stm32.c b/drivers/pci/controller/dwc/pcie-stm32.c
> index 964fa6f674c8..96a5fb893af4 100644
> --- a/drivers/pci/controller/dwc/pcie-stm32.c
> +++ b/drivers/pci/controller/dwc/pcie-stm32.c
> @@ -287,18 +287,16 @@ static int stm32_pcie_probe(struct platform_device *pdev)
>   
>   	ret = pm_runtime_set_active(dev);
>   	if (ret < 0) {
> -		clk_disable_unprepare(stm32_pcie->clk);
> -		stm32_remove_pcie_port(stm32_pcie);
> -		return dev_err_probe(dev, ret, "Failed to activate runtime PM\n");
> +		dev_err_probe(dev, ret, "Failed to activate runtime PM\n");
> +		goto err_disable_clk;
>   	}
>   
>   	pm_runtime_no_callbacks(dev);
>   
>   	ret = devm_pm_runtime_enable(dev);
>   	if (ret < 0) {
> -		clk_disable_unprepare(stm32_pcie->clk);
> -		stm32_remove_pcie_port(stm32_pcie);
> -		return dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
> +		dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
> +		goto err_disable_clk;
>   	}
>   
>   	ret = dw_pcie_host_init(&stm32_pcie->pci.pp);