The D40 needs the same quirks as the other (semi-)professional Nikon cameras.
The patch is against 2.6.23-rc5.

Details:
http://bugs.gentoo.org/show_bug.cgi?id=191431


From: Ortwin Glück <odi@odi.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>