linux-kernel - Re: [PATCH net-next] net: dsa: Remove redundant NULL dst check

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Message-Id: <201704210929.45552.jbe@pengutronix.de>
Date:   Fri, 21 Apr 2017 09:29:44 +0200
From:   Juergen Borleis <jbe@...gutronix.de>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        "David S. Miller" <davem@...emloft.net>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next] net: dsa: Remove redundant NULL dst check

Hi Florian,

On Friday 21 April 2017 00:47:22 Florian Fainelli wrote:
> tag_lan9303.c does check for a NULL dst but that's already checked by
> dsa_switch_rcv() one layer above.
>
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
> ---
>  net/dsa/tag_lan9303.c | 5 -----
>  1 file changed, 5 deletions(-)
>
> diff --git a/net/dsa/tag_lan9303.c b/net/dsa/tag_lan9303.c
> index 563b6c8fe445..70130ed5c21a 100644
> --- a/net/dsa/tag_lan9303.c
> +++ b/net/dsa/tag_lan9303.c
> @@ -79,11 +79,6 @@ static struct sk_buff *lan9303_rcv(struct sk_buff
> *skb, struct net_device *dev, struct dsa_switch *ds;
>  	unsigned int source_port;
>
> -	if (unlikely(!dst)) {
> -		dev_warn_ratelimited(&dev->dev, "Dropping packet, due to missing switch tree device\n");
> -		return NULL; 
> -	}
> -
>  	ds = dst->ds[0];
>
>  	if (unlikely(!ds)) {

Thanks!

Acked-by: Juergen Borleis <jbe@...gutronix.de>

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