linux-kernel - Re: [PATCH 2/2] regmap: Allow caches for devices with no defaults

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Message-ID: <109263.1318182222@turing-police.cc.vt.edu>
Date:	Sun, 09 Oct 2011 13:43:42 -0400
From:	Valdis.Kletnieks@...edu
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	dp@...nsource.wolfsonmicro.com, linux-kernel@...r.kernel.org,
	patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH 2/2] regmap: Allow caches for devices with no defaults

On Sun, 09 Oct 2011 14:44:36 BST, Mark Brown said:
> We only really need the defaults in order to cut down the number of
> registers we sync and to satisfy reads while the device is powered off

So let me get this straight - we cache the values so that if there's a read,
we can return our best guess as to what the device would return if it was
in fact powered on, instead of notifying the caller that the device is off?

I think I just sprained my brain trying to parse the logic there :)

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