linux-kernel - Re: [PATCH 2/2] usb: dwc3: xilinx: add missing depopulate in probe error path

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Message-ID: <20240814233122.i7anp7a3p5xnl5tt@synopsys.com>
Date: Wed, 14 Aug 2024 23:31:26 +0000
From: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
CC: Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michal Simek <michal.simek@....com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Vignesh R <vigneshr@...com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>,
        Radhey Shyam Pandey <radhey.shyam.pandey@....com>,
        Piyush Mehta <piyush.mehta@....com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH 2/2] usb: dwc3: xilinx: add missing depopulate in probe
 error path

On Wed, Aug 14, 2024, Krzysztof Kozlowski wrote:
> Depopulate device in probe error paths to fix leak of children
> resources.
> 
> Fixes: 53b5ff83d893 ("usb: dwc3: xilinx: improve error handling for PM APIs")
> Cc: <stable@...r.kernel.org>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  drivers/usb/dwc3/dwc3-xilinx.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/dwc3/dwc3-xilinx.c b/drivers/usb/dwc3/dwc3-xilinx.c
> index bb4d894c16e9..b7613a106da6 100644
> --- a/drivers/usb/dwc3/dwc3-xilinx.c
> +++ b/drivers/usb/dwc3/dwc3-xilinx.c
> @@ -330,6 +330,7 @@ static int dwc3_xlnx_probe(struct platform_device *pdev)
>  	return pm_runtime_resume_and_get(dev);

If pm_runtime_resume_and_get() fails, then probe will fail. We should
probably cleanup in that case too.

BR,
Thinh

>  
>  err_pm_set_suspended:
> +	of_platform_depopulate(dev);
>  	pm_runtime_set_suspended(dev);
>  
>  err_clk_put:
> -- 
> 2.43.0
>