[PATCH] usb: dwc3-meson-g12a: Fix an error handling path in dwc3_meson_g12a_probe()

[PATCH] usb: dwc3-meson-g12a: Fix an error handling path in dwc3_meson_g12a_probe()

[Christophe JAILLET]

If dwc3_meson_g12a_otg_init() fails, resources allocated by the previous
of_platform_populate() call should be released, as already done in the
error handling path.

Fixes: 1e355f21d3fb ("usb: dwc3: Add Amlogic A1 DWC3 glue")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/usb/dwc3/dwc3-meson-g12a.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c
index 365aec00d302..e99c7489dba0 100644
--- a/drivers/usb/dwc3/dwc3-meson-g12a.c
+++ b/drivers/usb/dwc3/dwc3-meson-g12a.c
@@ -796,7 +796,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
 
 	ret = dwc3_meson_g12a_otg_init(pdev, priv);
 	if (ret)
-		goto err_phys_power;
+		goto err_plat_depopulate;
 
 	pm_runtime_set_active(dev);
 	pm_runtime_enable(dev);
@@ -804,6 +804,9 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
 
 	return 0;
 
+err_plat_depopulate:
+	of_platform_depopulate(dev);
+
 err_phys_power:
 	for (i = 0 ; i < PHY_COUNT ; ++i)
 		phy_power_off(priv->phys[i]);
-- 
2.34.1


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Re: [PATCH] usb: dwc3-meson-g12a: Fix an error handling path in dwc3_meson_g12a_probe()

[Neil Armstrong]

On 10/06/2023 15:32, Christophe JAILLET wrote:
> If dwc3_meson_g12a_otg_init() fails, resources allocated by the previous
> of_platform_populate() call should be released, as already done in the
> error handling path.
> 
> Fixes: 1e355f21d3fb ("usb: dwc3: Add Amlogic A1 DWC3 glue")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
>   drivers/usb/dwc3/dwc3-meson-g12a.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c
> index 365aec00d302..e99c7489dba0 100644
> --- a/drivers/usb/dwc3/dwc3-meson-g12a.c
> +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c
> @@ -796,7 +796,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
>   
>   	ret = dwc3_meson_g12a_otg_init(pdev, priv);
>   	if (ret)
> -		goto err_phys_power;
> +		goto err_plat_depopulate;
>   
>   	pm_runtime_set_active(dev);
>   	pm_runtime_enable(dev);
> @@ -804,6 +804,9 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
>   
>   	return 0;
>   
> +err_plat_depopulate:
> +	of_platform_depopulate(dev);
> +
>   err_phys_power:
>   	for (i = 0 ; i < PHY_COUNT ; ++i)
>   		phy_power_off(priv->phys[i]);

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

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Re: [PATCH] usb: dwc3-meson-g12a: Fix an error handling path in dwc3_meson_g12a_probe()

[Martin Blumenstingl]

On Sat, Jun 10, 2023 at 3:32 PM Christophe JAILLET
<christophe.jaillet@wanadoo.fr> wrote:
>
> If dwc3_meson_g12a_otg_init() fails, resources allocated by the previous
> of_platform_populate() call should be released, as already done in the
> error handling path.
>
> Fixes: 1e355f21d3fb ("usb: dwc3: Add Amlogic A1 DWC3 glue")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

We should move to devm_of_platform_populate() mid term.
That said, this fix is good for now because it's simple and can be backported.

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