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On a gen2 system when using /proc/bus/pci/nn/mm.m to access the PCI configuration space of an HCA in an attempt to read the VPD for the adapter, the flag bit in the VPD address fails to set after a reasonable delay after writing a new address and the VPD data are invalid. Other adapters (e.g. Broadcom NICs) that also have a VPD do set the flag bit and return valid VPD data. Any ideas? |
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