Fix compilation with CONFIG_PCI=n / allnoconfig

Signed-off-by: Andi Kleen <ak@suse.de>

---
 arch/x86_64/kernel/pci-dma.c |    2 ++
 1 files changed, 2 insertions(+)

Index: linux/arch/x86_64/kernel/pci-dma.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-dma.c
+++ linux/arch/x86_64/kernel/pci-dma.c
@@ -48,9 +48,11 @@ dma_alloc_pages(struct device *dev, gfp_
 {
 	struct page *page;
 	int node;
+#ifdef CONFIG_PCI
 	if (dev->bus == &pci_bus_type)
 		node = pcibus_to_node(to_pci_dev(dev)->bus);
 	else
+#endif
 		node = numa_node_id();
 	page = alloc_pages_node(node, gfp, order);
 	return page ? page_address(page) : NULL;