netdev - Re: [PATCH v2 net-next v2 11/12] net: dsa: mv88e6xxx: add an SMI ops structure

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Message-ID: <20160614220435.GI12832@lunn.ch>
Date:	Wed, 15 Jun 2016 00:04:35 +0200
From:	Andrew Lunn <andrew@...n.ch>
To:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH v2 net-next v2 11/12] net: dsa: mv88e6xxx: add an SMI ops
 structure

> +struct mv88e6xxx_smi_ops {
> +	int (*read)(struct mii_bus *bus, int sw_addr,
> +		    int addr, int reg, u16 *val);
> +	int (*write)(struct mii_bus *bus, int sw_addr,
> +		     int addr, int reg, u16 val);
> +};
> +

I think this API would be better if it used ps, not bus and sw_addr.

The only problem is the very first read to get the switch ID. I would
add one more layer in between, so that you can call the lowest level
functions without having a ps structure.

	  Andrew