Subject: Re: [PATCH v7 8/8] net: e1000e: Adds hardware supported cross timestamp on e1000e nic

From: Jeff Kirsher <[email-masked]>
Date: Thu, 18 Feb 2016 16:43:23 -0800

On Fri, 2016-02-12 at 12:25 -0800, Christopher S. Hall wrote:
> Modern Intel systems supports cross timestamping of the network
> device
> clock and Always Running Timer (ART) in hardware.  This allows the
> device time and system time to be precisely correlated. The timestamp
> pair is returned through e1000e_phc_get_syncdevicetime() used by
> get_system_device_crosststamp().  The hardware cross-timestamp result
> is made available to applications through the PTP_SYS_OFFSET_PRECISE
> ioctl which calls e1000e_phc_getcrosststamp().
> 
> Signed-off-by: Christopher S. Hall <[email-masked]>
> [jstultz: Reworked to use new interface, commit message tweaks]
> Signed-off-by: John Stultz <[email-masked]>
> ---
>  drivers/net/ethernet/intel/Kconfig          |  9 +++
>  drivers/net/ethernet/intel/e1000e/defines.h |  5 ++
>  drivers/net/ethernet/intel/e1000e/ptp.c     | 85
> +++++++++++++++++++++++++++++
>  drivers/net/ethernet/intel/e1000e/regs.h    |  4 ++
>  4 files changed, 103 insertions(+)

Acked-by: Jeff Kirsher <[email-masked]>

I am fine with Christopher's changes, so when the issues with the other
patches in the series gets ironed out, your good to apply this patch as
well John.