diff options
| -rw-r--r-- | arch/um/drivers/virt-pci.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c index 3ac220dafec4..6884e1be38e4 100644 --- a/arch/um/drivers/virt-pci.c +++ b/arch/um/drivers/virt-pci.c @@ -533,6 +533,25 @@ static void um_pci_irq_vq_cb(struct virtqueue *vq) } } +/* Copied from arch/x86/kernel/devicetree.c */ +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) +{ + struct device_node *np; + + for_each_node_by_type(np, "pci") { + const void *prop; + unsigned int bus_min; + + prop = of_get_property(np, "bus-range", NULL); + if (!prop) + continue; + bus_min = be32_to_cpup(prop); + if (bus->number == bus_min) + return np; + } + return NULL; +} + static int um_pci_init_vqs(struct um_pci_device *dev) { struct virtqueue *vqs[2]; |