linux-kernel - Re: [PATCH 2/3] regmap: Add API call apply but not register a patch file

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Date:	Mon, 24 Feb 2014 10:24:21 +0900
From:	Mark Brown <broonie@...nel.org>
To:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
Cc:	gregkh@...uxfoundation.org, sameo@...ux.intel.com,
	lee.jones@...aro.org, linux-kernel@...r.kernel.org,
	patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH 2/3] regmap: Add API call apply but not register a patch
 file

On Sun, Feb 23, 2014 at 04:11:59PM +0000, Charles Keepax wrote:
> On Sat, Feb 22, 2014 at 11:10:48AM +0900, Mark Brown wrote:

> > This is just regmap_multi_reg_write() I think?  That already exists, the
> > theory was that we're going to get an optimised version of that for some
> > hardware which can stream things and cut out some overheads though that
> > doesn't seem to have materialised yet.

> I had missed regmap_multi_reg_write but the difference here is that we
> apply cache bypass, and that the cache bypass is only applied whilst the
> regmap lock is held. This allows users to be sure that no writes
> from other threads will accidentally have the bypass applied to them.

Right, OK - but it should still be a wrapper for a core implementation
and share interface/naming.

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