RE: [PATCH 1/2] Fix build error caused by broken PCH_PTP moduledependency.

[Keller, Jacob E]

> -----Original Message-----
> From: netdev-owner@xxxxxxxxxxxxxxx [mailto:netdev-owner@xxxxxxxxxxxxxxx]
> On Behalf Of David Miller
> Sent: Tuesday, October 16, 2012 1:17 PM
> To: bhutchings@xxxxxxxxxxxxxx
> Cc: richardcochran@xxxxxxxxx; haicheng.li@xxxxxxxxxxxxxxx;
> netdev@xxxxxxxxxxxxxxx; tshimizu818@xxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; haicheng.lee@xxxxxxxxx
> Subject: Re: [PATCH 1/2] Fix build error caused by broken PCH_PTP module
> dependency.
> 
> From: Ben Hutchings <bhutchings@xxxxxxxxxxxxxx>
> Date: Tue, 16 Oct 2012 21:09:27 +0100
> 
> > I think the various kconfig options should be changed as follows:
> >
> > 1. Only PTP_1588_CLOCK selects PPS.
> > 2. Nothing depends on EXPERIMENTAL.  (This stuff has been in for 18
> >    months and it's even being backported to RHEL 6 now.)
> > 3. Either:
> >    (a) The per-driver PHC options select nothing, and the driver options
> >        do e.g.:
> > 	select PTP_1588_CLOCK if IGB_PTP
> >    (b) The per-driver PHC options are removed and the driver options do:
> > 	select PTP_1588_CLOCK
> >        (i.e. PHC support is unconditional)
> >
> > Any objections to this, or preference for (a) vs (b)?
> 
> No objections, prefer (b).

No objections here, I also prefer (b). The feature shouldn't have much impact unless enabled via hwtstamp_ioctl, and it drastically reduces requirement on end-user needing to enable PHC support.

- Jake

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