netdev - Re: [net-next 3/4 (V3)] stmmac: add the Energy Efficient Ethernet support

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Message-ID: <4F87C92E.7040503@st.com>
Date:	Fri, 13 Apr 2012 08:35:26 +0200
From:	Giuseppe CAVALLARO <peppe.cavallaro@...com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, bhutchings@...arflare.com,
	rayagond@...avyalabs.com
Subject: Re: [net-next 3/4 (V3)] stmmac: add the Energy Efficient Ethernet
 support

On 4/12/2012 10:32 PM, David Miller wrote:
> From: Giuseppe CAVALLARO <peppe.cavallaro@...com>
> Date: Fri,  6 Apr 2012 11:29:17 +0200
> 
>> +static int stmmac_ethtool_op_set_eee(struct net_device *dev,
>> +				     struct ethtool_value *eee)
>> +{
>> +	struct stmmac_priv *priv = netdev_priv(dev);
>> +
>> +	if ((!eee->data) && (priv->eee_enabled)) {
>> +		stmmac_disable_eee_mode(priv);
>> +		priv->eee_enabled = eee->data;
>> +	} else if ((eee->data) && (!priv->eee_enabled))
>> +		/* We are asking for enabling the EEE but this
>> +		 * has to be verified by invoking the eee_init function.
>> +		 * For this reason we cannot set eee_enabled to
>> +		 * eee->data, directly. */
>> +		priv->eee_enabled = stmmac_eee_init(priv);
>> +
>> +	return 0;
> 
> If stmmac_eee_init() determines that it cannot enable eee, you should
> return an appropriate error code here so that ethtool can report that
> fact.

Ok, thanks

peppe

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