Commit 314a1408 authored by Vincent Whitchurch's avatar Vincent Whitchurch Committed by Richard Weinberger
Browse files

um: virt-pci: implement pcibios_get_phb_of_node() 



Implement pcibios_get_phb_of_node() as x86 does in order to allow PCI
busses to be associated with devicetree nodes.

Signed-off-by: default avatarVincent Whitchurch <vincent.whitchurch@axis.com>
Acked-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 83e913f5

arch/um/drivers/virt-pci.c

+19 −0
Original line number Diff line number Diff line
@@ -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];