On Wed, Dec 13, 2017 at 05:01:58PM -0700, Alex Williamson wrote: > @@ -109,6 +109,7 @@ static void interrupt_event_handler(struct work_struct *work) > struct dpc_dev *dpc = container_of(work, struct dpc_dev, work); > struct pci_dev *dev, *temp, *pdev = dpc->dev->port; > struct pci_bus *parent = pdev->subordinate; > + u16 ctl; > > pci_lock_rescan_remove(); > list_for_each_entry_safe_reverse(dev, temp, &parent->devices, > @@ -135,6 +136,10 @@ static void interrupt_event_handler(struct work_struct *work) > > pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_STATUS, > PCI_EXP_DPC_STATUS_TRIGGER | PCI_EXP_DPC_STATUS_INTERRUPT); > + > + pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, &ctl); > + pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, > + ctl & ~PCI_EXP_DPC_CTL_INT_EN); Did you mean to re-enable the interrupt here rather than mask it off?
