linux-kernel - The use_count problem of regulator

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Date:	Wed, 20 Jan 2010 15:30:24 +0900
From:	Joonyoung Shim <jy0922.shim@...sung.com>
To:	lrg@...mlogic.co.uk, broonie@...nsource.wolfsonmicro.com
Cc:	kyungmin.park@...sung.com, mk7.kang@...sung.com,
	linux-kernel@...r.kernel.org
Subject: The use_count problem of regulator

Hi, all.

I have one simple question.

In the regulator framework, if the regulator is enabled for example by 
boot_on constraint, when regulator_get is called at the driver probe 
function, the use_count of struct regulator_dev is zero. But if 
regulator_has_full_constraints() is used, even though above the 
regulator is using, it is disabled by regulator_init_complete() because
the use_count is zero.

Of course, we can use regulator_get_exclusive instead of regulator_get,
but if the regulator can be shared, i think this will be a problem.

Thanks.
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