[U-Boot] use of C99

[Timur Tabi <timur@freescale.com>]

Premi, Sanjeev wrote:

> One of the biggest problem is uncontrolled variable definitions that
> gets even nasty when variables have same names with different types;
> though under different set of #ifdefs. Quite possible for commonly
> used variable names - i, ptr, tmp, etc.

Then let's just say that if you're going to define a variable in the
middle of a function, it can't have the same name as another variable in
that function.

> I feel, here, ifdefs provide a false sense of 'enclosure' with possibility
> of frequent breaches - in code (while implementing) and in simple reading 
> (for understanding).

Sorry, I don't understand what you're talking about.  The #ifdefs are
used to enable feature-specific code on platforms that have that feature.

-- 
Timur Tabi
Linux kernel developer at Freescale