netdev - Re: [PATCH resend] Renesas Ethernet AVB driver

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Message-ID: <552C2849.2080503@cogentembedded.com>
Date:	Mon, 13 Apr 2015 23:34:17 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Ben Hutchings <ben.hutchings@...ethink.co.uk>
CC:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, devicetree@...r.kernel.org,
	galak@...eaurora.org, netdev@...r.kernel.org,
	linux-sh@...r.kernel.org
Subject: Re: [PATCH resend] Renesas Ethernet AVB driver

Hello.

On 04/02/2015 04:56 PM, Ben Hutchings wrote:

> This driver looks somewhat similar to sh-eth, but lacks some of the
> recent bug fixes made to that.  At least commit 283e38db65e7 ("sh_eth:
> Fix serialisation of interrupt disable with interrupt & NAPI handler")
> appears to be applicable, but there are probably others.

    I suspect this issue applies to many drivers...
    I couldn't reproduce the bug that patch was fixing, so left this fix out 
for the time being. Others cases were fixed (if applicable).

> One feature request:

> On Sat, 2015-03-28 at 02:13 +0300, Sergei Shtylyov wrote:
> [...]
>> +/* ioctl to device function */
>> +static int ravb_do_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
>> +{
>> +	struct ravb_private *priv = netdev_priv(ndev);
>> +	struct phy_device *phydev = priv->phydev;
>> +
>> +	if (!netif_running(ndev))
>> +		return -EINVAL;
>> +
>> +	if (!phydev)
>> +		return -ENODEV;
>> +
>> +	if (cmd == SIOCSHWTSTAMP)
>> +		return ravb_hwtstamp_ioctl(ndev, req, cmd);
> [...]

> The driver should also handle SIOCGHWTSTAMP.

    Done.

> Ben.

WBR, Sergei

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