linux-kernel - Re: [PATCH v3] net: ethernet: support "fixed-link" DT node on nb8800 driver

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Message-ID: <yw1xfux7gpol.fsf@unicorn.mansr.com>
Date:	Fri, 05 Feb 2016 15:08:42 +0000
From:	Måns Rullgård <mans@...sr.com>
To:	Sebastian Frias <sf84@...oste.net>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>, mason <slash.tmp@...e.fr>
Subject: Re: [PATCH v3] net: ethernet: support "fixed-link" DT node on nb8800 driver

Sebastian Frias <sf84@...oste.net> writes:

> On 02/05/2016 03:34 PM, Måns Rullgård wrote:
>> Sebastian Frias <sf84@...oste.net> writes:
>>
>>> Signed-off-by: Sebastian Frias <sf84@...oste.net>
>>
>> Please change the subject to something like "net: ethernet: nb8800:
>> support fixed-link DT node" and add a comment body.
>
> The subject is pretty explicit for such a simple patch, what else
> could I add that wouldn't be unnecessary chat?

It's customary to include a description body even if it's little more
than a restatement of the subject.  Also, while the subject usually only
says _what_ the patch does, the body should additionally state _why_ it
is needed.

>>> ---
>>>   drivers/net/ethernet/aurora/nb8800.c | 14 +++++++++++++-
>>>   1 file changed, 13 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/net/ethernet/aurora/nb8800.c
>>> b/drivers/net/ethernet/aurora/nb8800.c
>>> index ecc4a33..e1fb071 100644
>>> --- a/drivers/net/ethernet/aurora/nb8800.c
>>> +++ b/drivers/net/ethernet/aurora/nb8800.c
>>> @@ -1460,7 +1460,19 @@ static int nb8800_probe(struct platform_device *pdev)
>>>   		goto err_disable_clk;
>>>   	}
>>>
>>> -	priv->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
>>> +	if (of_phy_is_fixed_link(pdev->dev.of_node)) {
>>> +		ret = of_phy_register_fixed_link(pdev->dev.of_node);
>>> +		if (ret < 0) {
>>> +			dev_err(&pdev->dev, "bad fixed-link spec\n");
>>> +			goto err_free_bus;
>>> +		}
>>> +		priv->phy_node = of_node_get(pdev->dev.of_node);
>>> +	}
>>> +
>>> +	if (!priv->phy_node)
>>> +		priv->phy_node = of_parse_phandle(pdev->dev.of_node,
>>> +						  "phy-handle", 0);
>>> +
>>>   	if (!priv->phy_node) {
>>>   		dev_err(&pdev->dev, "no PHY specified\n");
>>>   		ret = -ENODEV;
>>> --
>>> 2.1.4
>>

-- 
Måns Rullgård