From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH 06/11] macb: enable transmit time stamping.
Date: Sun, 19 Jun 2011 13:56:40 +0200
Message-ID: <1308484600.3539.74.camel@edumazet-laptop>
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	 <ac8adf65aecd78e714a172a30a0b455e3a12dec9.1308481492.git.richard.cochran@omicron.at>
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Cc: netdev@vger.kernel.org, David Miller <davem@davemloft.net>,
	Nicolas Ferre <nicolas.ferre@atmel.com>
To: Richard Cochran <richardcochran@gmail.com>
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Le dimanche 19 juin 2011 =C3=A0 13:20 +0200, Richard Cochran a =C3=A9cr=
it :
> This patch enables software (and phy device) transmit time stamping
> Compile tested only.
>=20
> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
> Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
> ---
>  drivers/net/macb.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
>=20
> diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> index 6c6a028..6944478 100644
> --- a/drivers/net/macb.c
> +++ b/drivers/net/macb.c
> @@ -676,6 +676,8 @@ static int macb_start_xmit(struct sk_buff *skb, s=
truct net_device *dev)
> =20
>  	spin_unlock_irqrestore(&bp->lock, flags);
> =20
> +	skb_tx_timestamp(skb);
> +
>  	return NETDEV_TX_OK;
>  }
> =20

Same problem here, its not safe.