Theres a small typo in the description for RTC_CLASS in 2.6.17: "Generic RTC class support. If you say yes here, you will be allowed to plug one or more RTCs to your system. You will probably want to enable one of more of the interfaces below." "want to enable one of more" I assume should be "or more"
Trivial, but I see no patch here? ;-)
This issue is now fixed in Linus' tree.