linux-kernel - Re: [PATCH 1/1] Userspace I/O (UIO): Documentatin for userspace DMA support

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Message-Id: <20081222111402.4e6f2b96.randy.dunlap@oracle.com>
Date:	Mon, 22 Dec 2008 11:14:02 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Edward Estabrook" <edward.estabrook.lkml@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	"Greg KH" <gregkh@...e.de>, hjk@...utronix.de,
	edward_estabrook@...lent.com
Subject: Re: [PATCH 1/1] Userspace I/O (UIO): Documentatin for userspace DMA
 support

On Wed, 3 Dec 2008 20:53:27 -0800 Edward Estabrook wrote:

> --- linux-2.6.28-rc6/Documentation/DocBook/uio-howto.tmpl.orig	2008-12-03
> 12:03:43.000000000 -0800
> +++ linux-2.6.28-rc6/Documentation/DocBook/uio-howto.tmpl	2008-12-03
> 13:11:53.000000000 -0800
> @@ -572,6 +602,50 @@ to set up sysfs files for this mapping.
>  	</para>
>  </sect1>
> 
> +<sect1 id="dma_region_mmap">
> +<title>Allocating DMA region with mmap()</title>

          Allocating a DMA region with mmap()

> +	<para>
> +	To allocate and map a DMA memory region you use

duplicate "use use".  Instead of dropping the second one, make it "the".

> +	use <function>mmap()</function>.  You may create as
> +	many regions as system resources allow by repeated use of
> +	<function>mmap()</function>.
> +	</para>


---
~Randy
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