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SubjectRe: [PATCH v6 4/5] PCI: only return true when dev io state is really changed
On 9/30/2020 3:05 AM, Ethan Zhao wrote:
> When uncorrectable error happens, AER driver and DPC driver interrupt
> handlers likely call
> pcie_do_recovery()
> ->pci_walk_bus()
> ->report_frozen_detected()
> with pci_channel_io_frozen the same time.

We need some more data on this. If DPC is supported by HW, errors
should be triggered by DPC not AER.

If I remember right, there is a register that tells which AER errors
should be handled by DPC.

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