From: Cong Ding <ding...@gmail.com>
Date: Mon, 14 Jan 2013 18:57:43 +0000

> the variable err is uninitialized if all the macros in the function are
> disabled.

Which is never possible because of the Kconfig dependencies.

This is what happens when you focus to narrowly on a piece of
code, you take no context whatsoever into consideration.
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