netdev - RE: [PATCHv3 net-next 2/3] phy: marvell: Add ethtool statistics counters

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Message-ID: <VI1PR04MB16643F2698CAADFCC43692CBE8FE0@VI1PR04MB1664.eurprd04.prod.outlook.com>
Date:	Thu, 31 Dec 2015 05:24:28 +0000
From:	Shaohui Xie <shaohui.xie@....com>
To:	Andrew Lunn <andrew@...n.ch>
CC:	David Miller <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	netdev <netdev@...r.kernel.org>
Subject: RE: [PATCHv3 net-next 2/3] phy: marvell: Add ethtool statistics
 counters

> -----Original Message-----
> From: Andrew Lunn [mailto:andrew@...n.ch]
> Sent: Wednesday, December 30, 2015 11:13 PM
> To: Shaohui Xie
> Cc: David Miller; Florian Fainelli; netdev
> Subject: Re: [PATCHv3 net-next 2/3] phy: marvell: Add ethtool statistics
> counters
> 
> On Wed, Dec 30, 2015 at 04:24:40AM +0000, Shaohui Xie wrote:
> > > Subject: [PATCHv3 net-next 2/3] phy: marvell: Add ethtool statistics
> > > counters
> > > +static int marvell_probe(struct phy_device *phydev) {
> > > +	struct marvell_priv *priv;
> > > +
> > > +	priv = devm_kzalloc(&phydev->dev, sizeof(*priv), GFP_KERNEL);
> > > +	if (!priv)
> > > +		return -ENOMEM;
> > > +
> > > +	phydev->priv = priv;
> > > +
> > > +	return 0;
> > > +}
> > > +
> > [S.H] Is a remove() function needed to free the memory?
> 
> Hi Shaohui
> 
> No, since i use devm_kzalloc(). The memory will automatically be freed when
> phydev->dev is destroyed. Take a look at all the devm_ API calls which have this
> property. They are useful for avoiding memory leaks, especially on error paths.
Got it.
Thank you!

Shaohui
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