linux-kernel - Re: [PATCH v3 1/2] clk: add clk accuracy retrieval support

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Message-ID: <52B2B42F.9010202@overkiz.com>
Date:	Thu, 19 Dec 2013 09:54:07 +0100
From:	boris brezillon <b.brezillon@...rkiz.com>
To:	Mike Turquette <mturquette@...aro.org>,
	Rob Landley <rob@...dley.net>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Russell King <linux@....linux.org.uk>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
CC:	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 1/2] clk: add clk accuracy retrieval support

Hello Mike,

On 19/12/2013 07:04, Mike Turquette wrote:
> Quoting Boris BREZILLON (2013-12-17 06:36:22)
>> +unsigned long __clk_get_accuracy(struct clk *clk)
>> +{
>> +       unsigned long ret;
>> +
>> +       if (!clk)
>> +               return 0;
>> +
>> +       return clk->accuracy;
>> +}
>> +EXPORT_SYMBOL_GPL(__clk_get_accuracy);
> Any reason for exporting this?

This might be used by clk drivers to choose the most accurate clk
among its parent clks (within the determinate_rate callback).

And as some clk drivers might be compiled as modules we need
to export the symbol (__clk_get_name helper function is exported
too).

Best Regards,

Boris
>
> Regards,
> Mike

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