On Fri, Jun 18, 2021 at 4:05 PM Wesley Sheng <wesley.sheng@xxxxxxx> wrote: > > Reset_link() callback function was called before mmio_enabled() in > pcie_do_recovery() function actually, so rearrange the general > sequence betwen step 2 and step 3 accordingly. I don't think this is true in all cases. If pcie_do_recovery() is called with state==pci_channel_io_normal (i.e. non-fatal AER) the link won't be reset. EEH (ppc PCI error recovery thing) also uses .mmio_enabled() as described.