linux-kernel - Re: [PATCH] USB: typec: tps6598x: Fix a memory leak in an error handling path

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Date:   Mon, 30 Oct 2023 11:19:33 +0200
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Abdel Alkuor <abdelalkuor@...tab.com>,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH] USB: typec: tps6598x: Fix a memory leak in an error
 handling path

On Mon, Oct 30, 2023 at 07:56:40AM +0100, Christophe JAILLET wrote:
> All error handling end to the error handling path, except these ones.
> Go to 'release_fw' as well here, otherwise 'fw' is leaking.
> 
> Fixes: 7e7a3c815d22 ("USB: typec: tps6598x: Add TPS25750 support")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
>  drivers/usb/typec/tipd/core.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> index 0e867f531d34..b0184be06c3d 100644
> --- a/drivers/usb/typec/tipd/core.c
> +++ b/drivers/usb/typec/tipd/core.c
> @@ -968,16 +968,17 @@ static int tps25750_start_patch_burst_mode(struct tps6598x *tps)
>  	ret = of_property_match_string(np, "reg-names", "patch-address");
>  	if (ret < 0) {
>  		dev_err(tps->dev, "failed to get patch-address %d\n", ret);
> -		return ret;
> +		goto release_fw;
>  	}
>  
>  	ret = of_property_read_u32_index(np, "reg", ret, &addr);
>  	if (ret)
> -		return ret;
> +		goto release_fw;
>  
>  	if (addr == 0 || (addr >= 0x20 && addr <= 0x23)) {
>  		dev_err(tps->dev, "wrong patch address %u\n", addr);
> -		return -EINVAL;
> +		ret = -EINVAL;
> +		goto release_fw;
>  	}
>  
>  	bpms_data.addr = (u8)addr;
> -- 
> 2.34.1

-- 
heikki