[POWERPC] Check for offline nodes in pci NUMA code

During boot we bring up all memory and cpu nodes. Normally a PCI device
will be in one of these online nodes, however in some weird setups it
may not.

We have only seen this in the lab but we may as well check for the case
and fallback to -1 (all nodes).

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 78d3c0fc8dfbfd1254f77fa44d680c4cdcc27b56..9bae8a5bf671344a6c5dce261272a6159a64a181 100644 (file)
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -199,8 +199,14 @@ struct pci_controller * pcibios_alloc_controller(struct device_node *dev)
        pci_setup_pci_controller(phb);
        phb->arch_data = dev;
        phb->is_dynamic = mem_init_done;
-       if (dev)
-               PHB_SET_NODE(phb, of_node_to_nid(dev));
+       if (dev) {
+               int nid = of_node_to_nid(dev);
+
+               if (nid < 0 || !node_online(nid))
+                       nid = -1;
+
+               PHB_SET_NODE(phb, nid);
+       }
        return phb;
 }