linux-kernel - Re: Question of resource

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Date:	Wed, 30 Dec 2009 12:08:34 +1100
From:	Ben Nizette <bn@...sdigital.com>
To:	me@...ipebalbi.com
Cc:	Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org
Subject: Re: Question of resource_size() implementation


On 30/12/2009, at 12:04 PM, Ben Nizette wrote:
> 
> 
> So resource_size would return SZ_4K and ioremap would map the SZ_4K bytes starting at MEM_AREA1_BASE, i.e. MEM_AREA1_BASE to MEM_AREA1_BASE - 1 /inclusive/.  This is also correct.
> 

IOW it's a matter of convention.  Either we could define a single-byte range to be end=start and put the +1 in the resource_size or we could define a single-byte range to be end=start+1 and leave the +1 out of resource_size.  The in-kernel convention is the former

> 	--Ben.
> 
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