diff options
| -rw-r--r-- | arch/powerpc/kernel/eeh.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index e5796524631c..416fb432d7e2 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -232,16 +232,30 @@ void eeh_slot_error_detail(struct eeh_pe *pe, int severity) { size_t loglen = 0; struct eeh_dev *edev; + bool valid_cfg_log = true; - eeh_pci_enable(pe, EEH_OPT_THAW_MMIO); - eeh_ops->configure_bridge(pe); - eeh_pe_restore_bars(pe); - - pci_regs_buf[0] = 0; - eeh_pe_for_each_dev(pe, edev) { - loglen += eeh_gather_pci_data(edev, pci_regs_buf, - EEH_PCI_REGS_LOG_LEN); - } + /* + * When the PHB is fenced or dead, it's pointless to collect + * the data from PCI config space because it should return + * 0xFF's. For ER, we still retrieve the data from the PCI + * config space. + */ + if (eeh_probe_mode_dev() && + (pe->type & EEH_PE_PHB) && + (pe->state & (EEH_PE_ISOLATED | EEH_PE_PHB_DEAD))) + valid_cfg_log = false; + + if (valid_cfg_log) { + eeh_pci_enable(pe, EEH_OPT_THAW_MMIO); + eeh_ops->configure_bridge(pe); + eeh_pe_restore_bars(pe); + + pci_regs_buf[0] = 0; + eeh_pe_for_each_dev(pe, edev) { + loglen += eeh_gather_pci_data(edev, pci_regs_buf + loglen, + EEH_PCI_REGS_LOG_LEN - loglen); + } + } eeh_ops->get_log(pe, severity, pci_regs_buf, loglen); } |