On 28 May 2007, at 18:11, Adrian Bunk wrote:
I have not seen any explanations: - Why did the upstream author write the code that way?
Apparently due to his requirement for extreme portability. The original code was designed to work on everything from 16-bit DOS through CRAY supercomputers through Windows, Unices and Linux.
The author has stated on the thread that it's a good idea to remove unnecessary ifdefs when porting the code into the kernel, given that the portability requirements are obviously no longer needed.
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