linux-kernel - Re: [PATCH 03/13] clk: CLK_PREPARE must depend on HAVE

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Date:	Sat, 21 Apr 2012 13:40:43 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Viresh Kumar <viresh.linux@...il.com>
Cc:	akpm@...ux-foundation.org, mturquette@...aro.org,
	sshtylyov@...sta.com, spear-devel@...t.st.com,
	linux-kernel@...r.kernel.org, jgarzik@...hat.com,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 03/13] clk: CLK_PREPARE must depend on HAVE_CLK

On Sat, Apr 21, 2012 at 05:17:30PM +0530, Viresh Kumar wrote:
> CLK_PREPARE must have dependency on HAVE_CLK. Add it.

No - its possible to have HAVE_CLK_PREPARE selected independently of
HAVE_CLK.  Why do we want to end up having to add conditionals all
over the place for 'select HAVE_CLK_PREPARE' ?

The only time HAVE_CLK_PREPARE gets used is in a header file, where you're
already making it conditional on HAVE_CLK.  Nothing else should know about
HAVE_CLK_PREPARE.
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