Hello,

the attached patch fixes the problem described in the mail 
https://mail.gna.org/public/xenomai-core/2006-10/msg00037.html. Here is 
the ChangeLog entry:

       * include/asm-powerpc/wrappers.h, include/asm-powerpc/syscall.h:
       Since Linux 2.4.15, __put_user and __get_user call migth_sleep.
       To avoid that, wrapper functions have been added.

Wolfgang.