module_param() and family take a "perms" argument; several people have
incorrectly used "644" instead of "0644".

(I have a patch which checks for sane perms at compile time, but it bloats
modules, so I haven't included it.)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (authored)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>