linux-kernel - Re: [PATCH 2/7] regmap: Make reg_config reg

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Date:	Wed, 16 Nov 2011 16:24:43 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Michael Hennerich <michael.hennerich@...log.com>,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	device-drivers-devel@...ckfin.uclinux.org, drivers@...log.com
Subject: Re: [PATCH 2/7] regmap: Make reg_config reg_defaults const

On Wed, Nov 16, 2011 at 05:23:33PM +0100, Lars-Peter Clausen wrote:
> On 11/16/2011 05:13 PM, Mark Brown wrote:

> > You should've got reams of sparse warnings from that - the indexed cache
> > is writing to the defaults table (which is very naughty and i keep
> > thinking about deleting it as a result).

> This patch makes reg_defaults const in the reg_config struct not in the
> regmap struct.

> Since we duplicate the reg_config reg_defaults into the regmap reg_defaults
> the index cache works on a runtime allocated array. (Though I wouldn't
> object to see it gone. For the average uscase it uses more memory and is
> slower than the rbnode cache).

Did you actually check the sparse output?
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