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Date:   Sun, 4 Jun 2017 22:55:16 +0200
From:   Richard Cochran <richardcochran@...il.com>
To:     Rafal Ozieblo <rafalo@...ence.com>
Cc:     David Miller <davem@...emloft.net>, nicolas.ferre@...el.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        harini.katakam@...inx.com, andrei.pistirica@...rochip.com
Subject: Re: [PATCH v2 4/4] net: macb: Add hardware PTP support

On Fri, Jun 02, 2017 at 03:28:10PM +0100, Rafal Ozieblo wrote:

> +int gem_get_hwtst(struct net_device *dev, struct ifreq *rq)
> +{
> +	struct macb *bp = netdev_priv(dev);
> +	struct hwtstamp_config *tstamp_config = &bp->tstamp_config;
> +
> +	if ((bp->hw_dma_cap & HW_DMA_CAP_PTP) == 0)
> +		return -EFAULT;

Segmentation fault?  Really?

...

> +int gem_set_hwtst(struct net_device *dev, struct ifreq *ifr, int cmd)
> +{
> +	struct macb *bp = netdev_priv(dev);
> +	struct hwtstamp_config *tstamp_config = &bp->tstamp_config;
> +	enum macb_bd_control tx_bd_control = TSTAMP_DISABLED;
> +	enum macb_bd_control rx_bd_control = TSTAMP_DISABLED;
> +	u32 regval;
> +
> +	if ((bp->hw_dma_cap & HW_DMA_CAP_PTP) == 0)
> +		return -EFAULT;

here again

Thanks,
Richard

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