netdev - Re: [PATCH net-next 01/11] pps/ptp: Allow PHC devices to adjust PPS events for known delay

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Message-ID: <20120920065725.GA2349@netboy.at.omicron.at>
Date:	Thu, 20 Sep 2012 08:57:26 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-net-drivers@...arflare.com,
	Rodolfo Giometti <giometti@...eenne.com>,
	Andrew Jackson <ajackson@...arflare.com>
Subject: Re: [PATCH net-next 01/11] pps/ptp: Allow PHC devices to adjust
 PPS events for known delay

On Wed, Sep 19, 2012 at 08:13:44PM +0100, Ben Hutchings wrote:
> Initial version by Stuart Hodgson <smhodgson@...arflare.com>
> 
> Some PHC device drivers may deliver PPS events with a significant
> and variable delay, but still be able to measure precisely what
> that delay is.
> 
> Add a pps_sub_ts() function for subtracting a delay from the
> timestamp(s) in a PPS event, and a PTP event type (PTP_CLOCK_PPSUSR)
> for which the caller provides a complete PPS event.
> 
> Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>

Acked-by: Richard Cochran <richardcochran@...il.com>
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