[PATCH] dwc3: google: Fix PM domain leak in dwc3_google_probe()

[Thinh Nguyen]

On Mon, Mar 16, 2026, Felix Gu wrote:
> When syscon_regmap_lookup_by_phandle_args() fails, the function was
> returning directly without cleaning up the power domain initialized
> earlier by dwc3_google_pm_domain_init().
> 
> Fix by jumping to err_deinit_pdom to properly clean up resources.
> 
> Fixes: 8995a37371bf4 ("usb: dwc3: Add Google Tensor SoC DWC3 glue driver")
> Signed-off-by: Felix Gu <ustc.gu at gmail.com>
> ---
>  drivers/usb/dwc3/dwc3-google.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/dwc3/dwc3-google.c b/drivers/usb/dwc3/dwc3-google.c
> index 2105c72af753..4ca567ec01d0 100644
> --- a/drivers/usb/dwc3/dwc3-google.c
> +++ b/drivers/usb/dwc3/dwc3-google.c
> @@ -385,8 +385,9 @@ static int dwc3_google_probe(struct platform_device *pdev)
>  						     "google,usb-cfg-csr",
>  						     ARRAY_SIZE(args), args);
>  	if (IS_ERR(google->usb_cfg_regmap)) {
> -		return dev_err_probe(dev, PTR_ERR(google->usb_cfg_regmap),
> -				     "invalid usb cfg csr\n");
> +		ret = dev_err_probe(dev, PTR_ERR(google->usb_cfg_regmap),
> +				    "invalid usb cfg csr\n");
> +		goto err_deinit_pdom;
>  	}
>  
>  	google->host_cfg_offset = args[0];
> 
> ---
> base-commit: b84a0ebe421ca56995ff78b66307667b62b3a900
> change-id: 20260316-dwc3-google-fd617b3d19f5
> 
> Best regards,
> -- 
> Felix Gu <ustc.gu at gmail.com>
> 

Acked-by: Thinh Nguyen <Thinh.Nguyen at synopsys.com>

BR,
Thinh