linux-kernel - Re: [PATCH v3 09/15] net: dsa: Add support for switch EEPROM access

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Date:	Thu, 30 Oct 2014 22:11:31 +0100
From:	Andrew Lunn <andrew@...n.ch>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Andrew Lunn <andrew@...n.ch>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 09/15] net: dsa: Add support for switch EEPROM access

> +static int dsa_slave_get_eeprom_len(struct net_device *dev)
> +{
> +	struct dsa_slave_priv *p = netdev_priv(dev);
> +	struct dsa_switch *ds = p->parent;
> +
> +	if (ds->pd->eeprom_len)
> +		return ds->pd->eeprom_len;
> +
> +	if (ds->drv->get_eeprom_len)
> +		return ds->drv->get_eeprom_len(ds);
> +
> +	return 0;
> +}
> +

Hi Guenter

I just started doing some testing with this patchset. A bit late since
David just accepted it, but...

root@...665:~# ethtool -e lan4
Cannot get EEPROM data: Invalid argument
root@...665:~# ethtool -e eth0
Cannot get EEPROM data: Operation not supported

There is no eeprom for the hardware i'm testing. Operation not
supported seems like a better error code and Invalid argument, and is
what other network drivers i tried returned.

      Andrew
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