tree 1507182116826675e204a2352ecee75bfa32dda7
parent ec8e4e9d3d83b7a973477c2cb4831511b0eec06e
author Gavin Shan <gwshan@linux.vnet.ibm.com> 1415759771 +1100
committer Michael Ellerman <mpe@ellerman.id.au> 1415946265 +1100

powerpc/powernv: Fix potential zero devisor

If there're no PHBs under P5IOC2 HUB device tree node, we should
bail early to avoid zero devisor and allocating TCE tables.

Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>