[PATCH 4.2 050/134] powerpc/eeh: Fix fenced PHB caused by eeh_slot_error_detail()

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Gavin Shan commit 259800135c654a098d9f0adfdd3d1f20eef1f231 upstream. The config space of some PCI devices can't be accessed when their PEs are in frozen state. Otherwise, fenced PHB might be

[PATCH 4.2 050/134] powerpc/eeh: Fix fenced PHB caused by eeh_slot_error_detail()

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Gavin Shan commit 259800135c654a098d9f0adfdd3d1f20eef1f231 upstream. The config space of some PCI devices can't be accessed when their PEs are in frozen state.