1 files changed, 23 insertions, 0 deletions

diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index 85503deeda46..ebc6f3c66340 100644
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -455,3 +455,26 @@ void pcibios_disable_device (struct pci_dev *dev)
         if (!dev->msi_enabled && pcibios_disable_irq)
                 pcibios_disable_irq(dev);
 }
+
+struct pci_bus *pci_scan_bus_with_sysdata(int busno)
+{
+        struct pci_bus *bus = NULL;
+        struct pci_sysdata *sd;
+
+        /*
+         * Allocate per-root-bus (not per bus) arch-specific data.
+         * TODO: leak; this memory is never freed.
+         * It's arguable whether it's worth the trouble to care.
+         */
+        sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+        if (!sd) {
+                printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busno);
+                return NULL;
+        }
+        sd->node = -1;
+        bus = pci_scan_bus(busno, &pci_root_ops, sd);
+        if (!bus)
+                kfree(sd);
+
+        return bus;
+}