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Date: Fri, 29 Jul 2016 01:48:23 +0200
From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Arnd Bergmann <arnd@arndb.de>
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Cc: ksummit-discuss@lists.linuxfoundation.org, "Nikula,
	Jani" <jani.nikula@linux.intel.com>, Dave Airlie <airlied@linux.ie>,
	Grant Likely <grant.likely@linaro.org>,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [Ksummit-discuss] [CORE TOPIC] (group) maintainership models
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Hi,

On 28/07/2016 at 10:44:23 +0200, Arnd Bergmann wrote :
> Some subsystems have essential drivers without which a platform cannot
> work (clock, irqchip, reset, ...) and those often don't allow the
> driver to be user-selectable at all. I'd like to see more of those
> get enabled for COMPILE_TEST, but the Kconfig statement for this
> is rather unintuitive:
> 
> config FOO
> 	bool "foo driver" if COMPILE_TEST && !ARCH_FOO
> 	default ARCH_FOO
> 	depends on GPIOLIB && I2C && OF && WHATEVER
> 
> This becomes a silent always-on symbol if the platform is used,
> and user-selectable on every other platform with COMPILE_TEST.
> 

Note that some maintainers prefer having the symbol selected directly
from ARCH_FOO or SOC_FOO instead of defaulting to it which may be more
explicit. I'm fine with both but my subsystem is not exactly essential
;)

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com