netdev - Re: [PATCH net-next] net: dsa: microchip: Uninitialized variable in ksz9477_acl_move

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Message-ID: <20230927144624.GN2714790@pengutronix.de>
Date: Wed, 27 Sep 2023 16:46:24 +0200
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Oleksij Rempel <linux@...pel-privat.de>,
	Woojung Huh <woojung.huh@...rochip.com>,
	UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH net-next] net: dsa: microchip: Uninitialized variable in
 ksz9477_acl_move_entries()

On Wed, Sep 27, 2023 at 03:53:37PM +0300, Dan Carpenter wrote:
> Smatch complains that if "src_idx" equals "dst_idx" then
> ksz9477_validate_and_get_src_count() doesn't initialized "src_count".
> Set it to zero for this situation.
> 
> Fixes: 002841be134e ("net: dsa: microchip: Add partial ACL support for ksz9477 switches")
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>

Reviewed-by: Oleksij Rempel <o.rempel@...gutronix.de>

Thank you!

> ---
>  drivers/net/dsa/microchip/ksz9477_acl.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/dsa/microchip/ksz9477_acl.c b/drivers/net/dsa/microchip/ksz9477_acl.c
> index 06d74c19eb94..e554cd4a024b 100644
> --- a/drivers/net/dsa/microchip/ksz9477_acl.c
> +++ b/drivers/net/dsa/microchip/ksz9477_acl.c
> @@ -554,7 +554,8 @@ static int ksz9477_acl_move_entries(struct ksz_device *dev, int port,
>  	struct ksz9477_acl_entry buffer[KSZ9477_ACL_MAX_ENTRIES];
>  	struct ksz9477_acl_priv *acl = dev->ports[port].acl_priv;
>  	struct ksz9477_acl_entries *acles = &acl->acles;
> -	int src_count, ret, dst_count;
> +	int ret, dst_count;
> +	int src_count = 0;
>  
>  	ret = ksz9477_validate_and_get_src_count(dev, port, src_idx, dst_idx,
>  						 &src_count, &dst_count);
> -- 
> 2.39.2
> 
> 
> 

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