netdev - Re: [PATCH 1/5] ptp: Added a brand new class driver for ptp clocks.

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Message-ID: <20100819092246.GA8484@riccoc20.at.omicron.at>
Date:	Thu, 19 Aug 2010 11:22:47 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	john stultz <johnstul@...ibm.com>, linuxppc-dev@...ts.ozlabs.org,
	Rodolfo Giometti <giometti@...ux.it>, netdev@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Krzysztof Halasa <khc@...waw.pl>
Subject: Re: [PATCH 1/5] ptp: Added a brand new class driver for ptp clocks.

On Wed, Aug 18, 2010 at 05:02:03PM +0200, Arnd Bergmann wrote:
> You might want to use callbacks for these system calls that you
> can register to at module load time, like it is done for the
> existing syscalls.

Can you point me to a specific example?

> The simpler way (e.g. for testing) is using Kconfig dependencies, like
> 
> config PTP
> 	bool "IEEE 1588 Precision Time Protocol"
> 
> config PPS
> 	tristate "Pulse per Second"
> 	depends on PTP || !PTP
> 
> The depends statement is a way of expressing that when PTP is enabled,
> PPS cannot be a module, while it may be a module if PTP is disabled.

THis did not work for me.

What I got was, in effect, two independent booleans.


Thanks,

Richard
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