netdev - Re: [PATCH 15/15] ethernet: ti: davinci_emac: add missing of_node_put after calling of_parse

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Date:	Wed, 27 Jul 2016 11:15:25 +0530
From:	Mugunthan V N <mugunthanvnm@...com>
To:	Peter Chen <peter.chen@....com>, <davem@...emloft.net>
CC:	<netdev@...r.kernel.org>, <vbridger@...nsource.altera.com>,
	<isubramanian@....com>, <kchudgar@....com>,
	<yisen.zhuang@...wei.com>, <salil.mehta@...wei.com>,
	<thomas.petazzoni@...e-electrons.com>,
	<sergei.shtylyov@...entembedded.com>, <peppe.cavallaro@...com>,
	<alexandre.torgue@...com>, <tremyfr@...il.com>,
	<wxt@...k-chips.com>, <arnd@...db.de>, <david.daney@...ium.com>,
	<huangdaode@...ilicon.com>, <jszhang@...vell.com>
Subject: Re: [PATCH 15/15] ethernet: ti: davinci_emac: add missing of_node_put
 after calling of_parse_phandle

On Wednesday 27 July 2016 07:50 AM, Peter Chen wrote:
> of_node_put needs to be called when the device node which is got
> from of_parse_phandle has finished using.
> 
> Signed-off-by: Peter Chen <peter.chen@....com>
> ---
>  drivers/net/ethernet/ti/davinci_emac.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
> index c6c5465..d8cb9d0 100644
> --- a/drivers/net/ethernet/ti/davinci_emac.c
> +++ b/drivers/net/ethernet/ti/davinci_emac.c
> @@ -1571,6 +1571,7 @@ static int emac_dev_open(struct net_device *ndev)
>  	if (priv->phy_node) {
>  		phydev = of_phy_connect(ndev, priv->phy_node,
>  					&emac_adjust_link, 0, 0);
> +		of_node_put(priv->phy_node);
>  		if (!phydev) {
>  			dev_err(emac_dev, "could not connect to phy %s\n",
>  				priv->phy_node->full_name);
> 

phy_node is accessed in case of of_phy_connect() returns error, so it
has to be moved after the dev_err log

Regards
Mugunthan V N