linux-kernel - Re: [PATCH] net: phy: fix uninitalized WOL parameters in phy_ethtool_get

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Message-Id: <20140310.162349.2007153760780671206.davem@davemloft.net>
Date:	Mon, 10 Mar 2014 16:23:49 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	sebastian.hesselbarth@...il.com
Cc:	ben@...adent.org.uk, f.fainelli@...il.com, netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: phy: fix uninitalized WOL parameters in
 phy_ethtool_get_wol

From: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Date: Mon, 10 Mar 2014 10:49:53 +0000

> void phy_ethtool_get_wol(struct phy_device *phydev, struct
> ethtool_wolinfo *wol)
> {
> 	memset(wol, 0, sizeof(*wol));
> 
> 	if (phydev && phydev->drv->get_wol)
> 		phydev->drv->get_wol(phydev, wol);
> }
> 
> That would also simplify above drivers down to e.g:
> 
> static void cpsw_get_wol(struct net_device *ndev, struct
> ethtool_wolinfo *wol)
> {
> 	struct cpsw_priv *priv = netdev_priv(ndev);
> 	int slave_no = cpsw_slave_index(priv);
> 	phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
> }
> 
> instead of:
> 
> static void cpsw_get_wol(struct net_device *ndev, struct
> ethtool_wolinfo *wol)
> {
> 	struct cpsw_priv *priv = netdev_priv(ndev);
> 	int slave_no = cpsw_slave_index(priv);
> 
> 	wol->supported = 0;
> 	wol->wolopts = 0;
> 
> 	if (priv->slaves[slave_no].phy)
> 		phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
> }

Agreed, since phy_ethtool_get_wol() is the common routine used by the drivers,
we should make it clear the structure.
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