linux-kernel - Re: [PATCH] phy: ti: omap-usb2: Fix refcount leak in omap_usb2

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Message-ID: <Yn0cjaaqfr5wphh3@shaak>
Date:   Thu, 12 May 2022 10:41:17 -0400
From:   Liam Beguin <liambeguin@...il.com>
To:     Miaoqian Lin <linmq006@...il.com>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Roger Quadros <rogerq@...com>, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] phy: ti: omap-usb2: Fix refcount leak in omap_usb2_probe

On Thu, May 12, 2022 at 08:32:33AM +0400, Miaoqian Lin wrote:
> of_parse_phandle() returns a node pointer with refcount
> incremented, we should use of_node_put() on it when done.
> Add missing of_node_put() to avoid refcount leak.
> 
> Fixes: 478b6c7436c2 ("usb: phy: omap-usb2: Don't use omap_get_control_dev()")
> Signed-off-by: Miaoqian Lin <linmq006@...il.com>
> ---
>  drivers/phy/ti/phy-omap-usb2.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/phy/ti/phy-omap-usb2.c b/drivers/phy/ti/phy-omap-usb2.c
> index 31a775877f6e..98133e5fc9de 100644
> --- a/drivers/phy/ti/phy-omap-usb2.c
> +++ b/drivers/phy/ti/phy-omap-usb2.c
> @@ -421,6 +421,7 @@ static int omap_usb2_probe(struct platform_device *pdev)
>  		}
>  
>  		control_pdev = of_find_device_by_node(control_node);
> +		of_node_put(control_node);
>  		if (!control_pdev) {
>  			dev_err(&pdev->dev, "Failed to get control device\n");
>  			return -EINVAL;
> -- 
> 2.25.1
> 

Reviewed-by: Liam Beguin <liambeguin@...il.com>

Thanks!