The patch in http://patchwork.kernel.org/patch/63806/ for the module therm_adt746x fixes a serious bug and it is not included in the lates stable ppc kernel. I do not know what the policy is in these cases, perhaps the next kernel should be unmasked? R. Reproducible: Always
sys-kernel/gentoo-sources-2.6.31-r10 marked stable on ppc/ppc64 on 2/23