linux-kernel - Re: [PATCH v2] phy: usb: sunplus: Fix memleak in update_disc

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Date:   Thu, 10 Nov 2022 12:32:49 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     vincent.sunplus@...il.com, kishon@...nel.org,
        linux-usb@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] phy: usb: sunplus: Fix memleak in update_disc_vol()

On 08-11-22, 15:34, YueHaibing wrote:
> 'otp_v' is allocated in nvmem_cell_read(), it should be freed
> before return.

Right!

> 
> Fixes: 99d9ccd97385 ("phy: usb: Add USB2.0 phy driver for Sunplus SP7021")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
> v2: free otp_v before return
> ---
>  drivers/phy/sunplus/phy-sunplus-usb2.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/phy/sunplus/phy-sunplus-usb2.c b/drivers/phy/sunplus/phy-sunplus-usb2.c
> index e827b79f6d49..62d5cb5c7c9d 100644
> --- a/drivers/phy/sunplus/phy-sunplus-usb2.c
> +++ b/drivers/phy/sunplus/phy-sunplus-usb2.c
> @@ -105,6 +105,9 @@ static int update_disc_vol(struct sp_usbphy *usbphy)
>  	val = (val & ~J_DISC) | set;
>  	writel(val, usbphy->phy_regs + CONFIG7);
>  
> +	if (!IS_ERR(otp_v))
> +		kfree(otp_v);

But that is not the case!

-- 
~Vinod