On Tue, 23 Oct 2012 12:51:29 -0700
Joe Perches [off-list ref] wrote:

quoted

btw, what's up with printk_syslog.h?  It includes two header files which it
doesn't need but fails to include the two it *does* need: printk_log.h
and types.h.

printk_syslog.c includes kernel.h (it includes types.h)
and printk_log.h.

I think printk_syslog.h doesn't need printk_log.h

A general rule is that the header file shouldn't know or care what else
it's includer has included.  Ideally it shouldn't know or care what
else its includees have included, either.

A fun test would be

for i in *.h
	echo $i > foo.c
	make foo.o
done