Re: [PATCH 1/2] Fix build error caused by broken PCH_PTP module dependency.

From: Ben Hutchings <redacted>
Date: Wed, 3 Oct 2012 22:45:10 +0100

I thought of it as being a peripheral feature (which most Solarflare
hardware doesn't implement) so it made sense for SFC_PTP to be optional
like SFC_MTD and so on.  But I'm quite happy to use a select instead, if
you want that to be the convention for all drivers implementing PHC.

I think that consistency might trump those conerns you mentioned, at
least in this case.