linux-kernel - Re: [PATCH net-next 1/7] net: dsa: list DSA links in the fabric

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Date:   Wed, 30 Oct 2019 14:39:49 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     vivien.didelot@...il.com
Cc:     linux-kernel@...r.kernel.org, f.fainelli@...il.com, andrew@...n.ch,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/7] net: dsa: list DSA links in the fabric

From: Vivien Didelot <vivien.didelot@...il.com>
Date: Mon, 28 Oct 2019 15:52:14 -0400

> @@ -122,6 +124,29 @@ static struct dsa_port *dsa_tree_find_port_by_node(struct dsa_switch_tree *dst,
>  	return NULL;
>  }
>  
> +struct dsa_link *dsa_link_touch(struct dsa_port *dp, struct dsa_port *link_dp)
> +{
> +	struct dsa_switch *ds = dp->ds;
> +	struct dsa_switch_tree *dst = ds->dst;
> +	struct dsa_link *dl;

Please fix the reverse christmas tree here, two suggestions:

	struct dsa_switch *ds = dp->ds;
	struct dsa_switch_tree *dst;
	struct dsa_link *dl;

	dst = ds->dst;

Or, alternatively, since the dst variable is used only once, get rid of it
and change:

> +	list_add_tail(&dl->list, &dst->rtable);

to

> +	list_add_tail(&dl->list, &ds->dst->rtable);