netdev - Re: [PATCH v1 net-next 5/9] lan743x: Add support for ethtool eeprom access

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Message-ID: <20180705172844.GL23469@lunn.ch>
Date:   Thu, 5 Jul 2018 19:28:44 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Bryan Whitehead <Bryan.Whitehead@...rochip.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        UNGLinuxDriver@...rochip.com
Subject: Re: [PATCH v1 net-next 5/9] lan743x: Add support for ethtool eeprom
 access

Hi Bryan

> +static int lan743x_ethtool_set_eeprom(struct net_device *netdev,
> +				      struct ethtool_eeprom *ee, u8 *data)
> +{
> +	struct lan743x_adapter *adapter = netdev_priv(netdev);
> +	int ret = -EINVAL;
> +
> +	if (ee->magic == LAN743X_EEPROM_MAGIC)
> +		ret = lan743x_eeprom_write(adapter, ee->offset, ee->len,
> +					   data);
> +	/* Beware!  OTP is One Time Programming ONLY!
> +	 * So do some strict condition check before messing up
> +	 */
> +	else if ((ee->magic == LAN743X_OTP_MAGIC) &&
> +		 (ee->offset == 0) &&
> +		 (ee->len == 512) &&

MAX_EEPROM_SIZE ?

> +		 (data[0] == OTP_INDICATOR_1))
> +		ret = lan743x_otp_write(adapter, ee->offset, ee->len, data);
> +
> +	return ret;
> +}

  Andrew