[PATCH] C undefined behavior fix

[Laurent Guerby]

> In the Linux case mmio isn't a problem. The rules for mmio in the portable
> code require you use architecture dependant macros (readb etc) and that
> the mmio space is mapped via ioremap.


I haven't done my homework, but I assume the code behind readb use inline
assembly and not C on most platforms?

May be GNU C could get some of the idea behind the Linux macros
to define the needed extension (portable within GNU C architectures
wherever possible).

-- 
Laurent Guerby <guerby@acm.org>