linux-kernel - Re: Query regarding PTP_1588

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Date:	Mon, 15 Apr 2013 14:19:54 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	Valdis.Kletnieks@...edu
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Query regarding PTP_1588_CLOCK

From: Valdis Kletnieks <Valdis.Kletnieks@...edu>
Date: Mon, 15 Apr 2013 14:16:18 -0400

> In drivers/net/ethernet/intel/Kconfig, we see this:
> 
> config E1000E
>         tristate "Intel(R) PRO/1000 PCI-Express Gigabit Ethernet support"
>         depends on PCI && (!SPARC32 || BROKEN)
>         select CRC32
>         select PTP_1588_CLOCK
>         ---help---
> 
> Is there a reason for the PTP_1588_CLOCK select?  That ends up
> forcing the PTP and PPS stuff into the kernel as well - and I don't
> use any of it.

You don't, but the driver does use it unconditionally.
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