Kernel module build 201664 seems to be failing to compile against Linux 2.6.32. I'm not positive if it's the kernel version, but since it compiles in Fedora 12 with 2.6.31 and not Fedora Rawhide or Gentoo with 2.6.32 that's my best guess. Build logs on Rawhide are attached. Build logs on Gentoo are at http://bugs.gentoo.org/show_bug.cgi?id=296277
201664 build log from Rawhide
This should be fixed in the latest release (2010.01.19).