netdev - Re: [PATCH net-next] ravb: Add fixed-link support

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Date:	Mon, 14 Dec 2015 00:00:57 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Yoshihiro Kaneko <ykaneko0929@...il.com>, netdev@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>, linux-sh@...r.kernel.org
Subject: Re: [PATCH net-next] ravb: Add fixed-link support

Hello.

On 12/13/2015 06:16 PM, Yoshihiro Kaneko wrote:

> From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@...esas.com>
>
> This patch adds support of the fixed PHY.
> This patch is based on commit 87009814cdbb ("ucc_geth: use the new fixed
> PHY helpers").
>
> Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@...esas.com>
> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@...il.com>
> ---
>
> This patch is based on the master branch of David Miller's next networking
> tree.
>
>   drivers/net/ethernet/renesas/ravb_main.c | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
>
> diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
> index 1cf1226..300acb3 100644
> --- a/drivers/net/ethernet/renesas/ravb_main.c
> +++ b/drivers/net/ethernet/renesas/ravb_main.c
[...]
> @@ -887,6 +888,17 @@ static int ravb_phy_init(struct net_device *ndev)
>
>   	/* Try connecting to PHY */
>   	pn = of_parse_phandle(np, "phy-handle", 0);
> +	if (!pn) {
> +		/* In the case of a fixed PHY, the DT node associated
> +		 * to the PHY is the Ethernet MAC DT node.
> +		 */
> +		if (of_phy_is_fixed_link(np)) {
> +			err = of_phy_register_fixed_link(np);
> +			if (err)
> +				return err;
> +		}
> +		pn = np;

    I'm seeing that other drivers call of_node_get() here, why don't you?

[...]

MBR, Sergei

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