{
int i;
struct pci_bus *bus;
+ struct pci_dev *bridge = NULL;
struct acpi_dmar_atsr *atsr;
struct dmar_atsr_unit *atsru;
dev = pci_physfn(dev);
-
- list_for_each_entry(atsru, &dmar_atsr_units, list) {
- atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header);
- if (atsr->segment == pci_domain_nr(dev->bus))
- goto found;
- }
-
- return 0;
-
-found:
for (bus = dev->bus; bus; bus = bus->parent) {
- struct pci_dev *bridge = bus->self;
-
+ bridge = bus->self;
if (!bridge || !pci_is_pcie(bridge) ||
pci_pcie_type(bridge) == PCI_EXP_TYPE_PCI_BRIDGE)
return 0;
-
- if (pci_pcie_type(bridge) == PCI_EXP_TYPE_ROOT_PORT) {
- for (i = 0; i < atsru->devices_cnt; i++)
- if (atsru->devices[i] == bridge)
- return 1;
+ if (pci_pcie_type(bridge) == PCI_EXP_TYPE_ROOT_PORT)
break;
- }
}
+ if (!bridge)
+ return 0;
- if (atsru->include_all)
- return 1;
+ list_for_each_entry_rcu(atsru, &dmar_atsr_units, list) {
+ atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header);
+ if (atsr->segment != pci_domain_nr(dev->bus))
+ continue;
+
+ for (i = 0; i < atsru->devices_cnt; i++)
+ if (atsru->devices[i] == bridge)
+ return 1;
+
+ if (atsru->include_all)
+ return 1;
+ }
return 0;
}