This patch for DIPC was submitted by Ralf Baechle <ralf@uni-koblenz.de>

Here's a brief comment from Kamran Karimi (DIPC's author):
It is made against 2.2.10. The main part of the patch is Ralf's changes to
the arch/mips/kernel/ipc.c file, and have nothing to do with DIPC. The
changes will appear in 2.2.11, so I expect this patch to have some
problems on 2.2.11 when it comes out. He has also made some other changes
to take some architecture dependent definitions out of
linux/include/dipc.h.

As can be seen, the port looks very straight forward. Please test it if
you have one or two MIPS computers and report the results. The work here
can also be used as a guideline for porting DIPC to other CPUs.
 
-Kamran