linux-kernel - Re: [PATCH] extcon: Remove CONFIG_EXTCON

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Message-ID: <20120712161621.GB7256@opensource.wolfsonmicro.com>
Date:	Thu, 12 Jul 2012 17:16:22 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	gregkh@...uxfoundation.org, sameo@...ux.intel.com,
	myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] extcon: Remove CONFIG_EXTCON_MODULE config to fix build
 break

On Thu, Jul 12, 2012 at 01:32:27PM +0900, Chanwoo Choi wrote:
> This patch modify 'Kconfig' of EXTCON Subsystem to support either
> active or inactive of EXTCON Subsystem. The various subsystem refer
> to EXTCON subsystem for controlling external connector, so core class
> of EXTCON should be included in kernel image. If EXTCON subsystem is
> builded with MODULE, other subsystem have build break because of
> linking the core class of EXTCON.

By this logic very little in the kernel should be a module.  We usually
only force things to be built in if there's a technical need for it like
init ordering constraints.  Generally this is just a case of making sure
the Kconfig stuff is set up with appropriate dependencies.

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