I found that sn_console was missing an include and a fix if CONFIG_SMP=n.  
This patch fixes up the two small problems I found.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>