PCI: Add 'nodomains' boot option, and pci_domains_supported global

[karo-tx-linux.git] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 2dd5c282fabe6a875ae9f6c55be6e9d0b57d6a90..728b3c863d87762ff6e1b1505af77126736b2b11 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -23,6 +23,10 @@
 
 unsigned int pci_pm_d3_delay = 10;
 
+#ifdef CONFIG_PCI_DOMAINS
+int pci_domains_supported = 1;
+#endif
+
 #define DEFAULT_CARDBUS_IO_SIZE                (256)
 #define DEFAULT_CARDBUS_MEM_SIZE       (64*1024*1024)
 /* pci=cbmemsize=nnM,cbiosize=nn can override this */
@@ -1567,6 +1571,13 @@ int pci_select_bars(struct pci_dev *dev, unsigned long flags)
        return bars;
 }
 
+static void __devinit pci_no_domains(void)
+{
+#ifdef CONFIG_PCI_DOMAINS
+       pci_domains_supported = 0;
+#endif
+}
+
 static int __devinit pci_init(void)
 {
        struct pci_dev *dev = NULL;
@@ -1588,6 +1599,8 @@ static int __devinit pci_setup(char *str)
                                pci_no_msi();
                        } else if (!strcmp(str, "noaer")) {
                                pci_no_aer();
+                       } else if (!strcmp(str, "nodomains")) {
+                               pci_no_domains();
                        } else if (!strncmp(str, "cbiosize=", 9)) {
                                pci_cardbus_io_size = memparse(str + 9, &str);
                        } else if (!strncmp(str, "cbmemsize=", 10)) {