linux-kernel - Re: [PATCH] leds: lm3530: fix handling of already enabled regulators

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Message-ID: <CAF+7xWnf6QMg5QeXyoRJH76xjprGW7B3pMXeS-f=uiwPdsMoLQ@mail.gmail.com>
Date:	Tue, 24 Apr 2012 20:35:09 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	"Kim, Milo" <Milo.Kim@...com>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Shreshtha Kumar Sahu <shreshthakumar.sahu@...ricsson.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Girdwood, Liam" <lrg@...com>
Subject: Re: [PATCH] leds: lm3530: fix handling of already enabled regulators

> Could you explain what 'enabled on boot' means ?
> 1) The regulator_enable() is called in initial time
> or
> 2) boot_on = 1 in regulator_init_data ?
>
> If you mean 'boot_on = 1' in regulator_init_data, then no use_count increase.

I mean boot_on = 1 in regulator_init_data.

I just checked the regulator core, and you are right that
no use_count increase if boot_on = 1 in this case.

use_count will be increased if boot_on = 1 && using regulator_get_exclusive.

Regards,
Axel
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