On Fri, Aug 15, 2008 at 02:11:31AM -0700, Andrew Morton wrote:
> On Fri, 15 Aug 2008 11:52:48 +0300 Felipe Balbi <me@xxxxxxxxxxxxxxx> wrote:
>
> > Wonder if it's possible to have the above patch applied so I can get rid
> > of those stubs in musb_io.h
>
> Someone would need to take care of it and document it and repair all
> those driver which broke because they went and created private copies.
>
> I could do some of that but I'm stuck at step #1. What the heck _are_
> these things? Why do they exist? What are their semantics?
>
> The arm implementation says
>
> * Generic IO read/write. These perform native-endian accesses. Note
> * that some architectures will want to re-define __raw_{read,write}w.
>
> which is somewhat clear as mud. I'd guess that these are the MMIO
> partners to insl and friends?
>
> And then it has
>
> extern void __raw_writesb(void __iomem *addr, const void *data, int bytelen);
> extern void __raw_writesw(void __iomem *addr, const void *data, int wordlen);
> extern void __raw_writesl(void __iomem *addr, const void *data, int longlen);
>
> which is a bit odd. I assume that "bytelen" should have been
> "bytecount" or similar.
Clearing that out is as easy as asking Russel King for more details.
Russel, do you have any comments to the above ?
--
balbi
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