[POWERPC] pcibus_to_node fixes

of_node_to_nid returns -1 if the associativity cannot be found. This
means pcibus_to_cpumask has to be careful not to pass a negative index into
node_to_cpumask.

Since pcibus_to_node could be used a lot, and of_node_to_nid is slow (it
walks a list doing strcmps), lets also cache the node in the
pci_controller struct.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
index 84a3075db524..4f55573762bb 100644
--- a/include/asm-powerpc/pci-bridge.h
+++ b/include/asm-powerpc/pci-bridge.h
@@ -6,6 +6,7 @@
 #include <asm-ppc/pci-bridge.h>
 #else
 
+#include <linux/config.h>
 #include <linux/pci.h>
 #include <linux/list.h>
 
@@ -22,6 +23,7 @@
 struct pci_controller {
         struct pci_bus *bus;
         char is_dynamic;
+        int node;
         void *arch_data;
         struct list_head list_node;
 
@@ -165,6 +167,12 @@ static inline unsigned long pci_address_to_pio(phys_addr_t address)
 #define PCI_PROBE_NORMAL        0       /* Do normal PCI probing */
 #define PCI_PROBE_DEVTREE       1       /* Instantiate from device tree */
 
+#ifdef CONFIG_NUMA
+#define PHB_SET_NODE(PHB, NODE)         ((PHB)->node = (NODE))
+#else
+#define PHB_SET_NODE(PHB, NODE)         ((PHB)->node = -1)
+#endif
+
 #endif /* CONFIG_PPC64 */
 #endif /* __KERNEL__ */
 #endif