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由 Gavin Shan 提交于
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: NAnton Blanchard <anton@samba.org> Signed-off-by: NGavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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