#ifdef CONFIG_PCI_DOMAINS_GENERIC
void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent)
{
- static int use_dt_domains = -1;
- int domain;
-
- if (!acpi_disabled) {
- domain = PCI_CONTROLLER(bus)->segment;
- goto out;
- }
-
- domain = of_get_pci_domain_nr(parent->of_node);
-
-
- /*
- * Check DT domain and use_dt_domains values.
- *
- * If DT domain property is valid (domain >= 0) and
- * use_dt_domains != 0, the DT assignment is valid since this means
- * we have not previously allocated a domain number by using
- * pci_get_new_domain_nr(); we should also update use_dt_domains to
- * 1, to indicate that we have just assigned a domain number from
- * DT.
- *
- * If DT domain property value is not valid (ie domain < 0), and we
- * have not previously assigned a domain number from DT
- * (use_dt_domains != 1) we should assign a domain number by
- * using the:
- *
- * pci_get_new_domain_nr()
- *
- * API and update the use_dt_domains value to keep track of method we
- * are using to assign domain numbers (use_dt_domains = 0).
- *
- * All other combinations imply we have a platform that is trying
- * to mix domain numbers obtained from DT and pci_get_new_domain_nr(),
- * which is a recipe for domain mishandling and it is prevented by
- * invalidating the domain value (domain = -1) and printing a
- * corresponding error.
- */
- if (domain >= 0 && use_dt_domains) {
- use_dt_domains = 1;
- } else if (domain < 0 && use_dt_domains != 1) {
- use_dt_domains = 0;
- domain = pci_get_new_domain_nr();
- } else {
- dev_err(parent, "Node %s has inconsistent \"linux,pci-domain\" property in DT\n",
- parent->of_node->full_name);
- domain = -1;
- }
+ static int use_dt_domains = -1;
+ int domain;
+
+ if (!acpi_disabled) {
+ domain = PCI_CONTROLLER(bus)->segment;
+ goto out;
+ }
+
+ domain = of_get_pci_domain_nr(parent->of_node);
+
+ /*
+ * Check DT domain and use_dt_domains values.
+ *
+ * If DT domain property is valid (domain >= 0) and
+ * use_dt_domains != 0, the DT assignment is valid since this means
+ * we have not previously allocated a domain number by using
+ * pci_get_new_domain_nr(); we should also update use_dt_domains to
+ * 1, to indicate that we have just assigned a domain number from
+ * DT.
+ *
+ * If DT domain property value is not valid (ie domain < 0), and we
+ * have not previously assigned a domain number from DT
+ * (use_dt_domains != 1) we should assign a domain number by
+ * using the:
+ *
+ * pci_get_new_domain_nr()
+ *
+ * API and update the use_dt_domains value to keep track of method we
+ * are using to assign domain numbers (use_dt_domains = 0).
+ *
+ * All other combinations imply we have a platform that is trying
+ * to mix domain numbers obtained from DT and pci_get_new_domain_nr(),
+ * which is a recipe for domain mishandling and it is prevented by
+ * invalidating the domain value (domain = -1) and printing a
+ * corresponding error.
+ */
+ if (domain >= 0 && use_dt_domains) {
+ use_dt_domains = 1;
+ } else if (domain < 0 && use_dt_domains != 1) {
+ use_dt_domains = 0;
+ domain = pci_get_new_domain_nr();
+ } else {
+ dev_err(parent, "Node %s has inconsistent \"linux,pci-domain\" property in DT\n",
+ parent->of_node->full_name);
+ domain = -1;
+ }
out:
- bus->domain_nr = domain;
+ bus->domain_nr = domain;
}
#endif
#endif