linux-kernel - Re: [PATCH v2 1/6] ARM: tegra: export apb dma readl/writel

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Message-ID: <20140107125404.GD26588@tbergstrom-lnx.Nvidia.com>
Date:	Tue, 7 Jan 2014 14:54:04 +0200
From:	Peter De Schrijver <pdeschrijver@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	Thierry Reding <thierry.reding@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	Wolfram Sang <wsa@...-dreams.de>,
	"Prashant Gaikwad" <pgaikwad@...dia.com>
Subject: Re: [PATCH v2 1/6] ARM: tegra: export apb dma readl/writel

On Mon, Jan 06, 2014 at 09:07:26PM +0100, Stephen Warren wrote:
> On 12/24/2013 06:32 AM, Peter De Schrijver wrote:
> > Export APB DMA readl and writel. These are needed because we can't access
> > the fuses directly on Tegra20 without potentially causing a system hang.
> 
> This does a lot more than just export the functions; it also changes the
> prototypes. I'm not sure why the prototype change was required/useful.
> This needs to be mentioned in the commit description/subject, and the
> reasoning explained too.
> 
> > diff --git a/include/linux/tegra-soc.h b/include/linux/tegra-soc.h
> 
> > +#if defined(CONFIG_TEGRA20_APB_DMA)
> > +void tegra_apb_io_init(void);
> 
> This seems to be an internal function; why is this one publicly
> prototyped and/or stubbed?
> 

Ah. this might be a leftover from a previous iteration... Need to check.
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