Hi,

I'm using:

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

and building for ARCH=powerpc - mpc85xx_defconfig

arch/powerpc/sysdev/fsl_rio.c will not build due to a missing
MCSR_MASK bitmask definition.

The attached patch is based on code found in

git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc.git

and - at the least - will fix the build problem.

BR,
Kerstin