Messages in this thread | | | Subject | Re: Question of resource_size() implementation | From | Ben Nizette <> | Date | Wed, 30 Dec 2009 12:08:34 +1100 |
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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
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