linux-kernel - Re: [RFC 2/2] regmap: make use of cached entries in debugfs

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Message-ID: <20120130153427.GH15596@pengutronix.de>
Date:	Mon, 30 Jan 2012 16:34:27 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	linux-kernel@...r.kernel.org, Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [RFC 2/2] regmap: make use of cached entries in debugfs

On Mon, Jan 30, 2012 at 02:56:28PM +0000, Mark Brown wrote:
> On Mon, Jan 30, 2012 at 03:08:17PM +0100, Wolfram Sang wrote:
> 
> > -		if (!regmap_readable(map, i))
> > +		if (map->cache_type == REGCACHE_NONE && !regmap_readable(map, i))
> 
> This isn't quite what you said in the changelog

Sorry, I reread and can't find the diff?

> and isn't going to play nicely with sparse register maps

sparse == RBTREE? What does "play nicely" mean here? Too slow?

> - it should be
> 
> 	if (regmap_cached(map, i) || regmap_readable(map, i))
> 
> or so (regmap_cached() doesn't exist at present but it seems reasonable
> that it should).

Sigh, I have to give up for now. Sadly, I am already way beyond my
schedule regarding the amplifier driver and need to work on other things
now.

Thanks,

   Wolfram

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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