[OLPC-devel] Re: belt and suspenders...

[Ronald G Minnich]

John R. wrote:
> On 7/11/06, Jim Gettys <jg at laptop.org> wrote:
> 
>> Yeah, that was my guess.  And building a USB stack is *lots* of work.
>>
> 
> Is it a lot of work? I guess a general purpose USB stack is, but what
> about just accessing USB storage?

well, go for it, but I can only tell you that my one experience with 
"small, simple" USB stacks is in the bios world, and they don't work 
very well at all.

The Linux USB stack is large and complex, and handles all kinds of 
corner cases, because USB is large and complex, and loaded with corner 
cases. It's not that linux USB is somehow a "bad" implementation, but 
more that USB is a real mess to cover completely. I had a lot of trouble 
with simple mass stores on the Insyde bios when I tried it, and all the 
little USB mass stores I had worked just fine in linux.

ron