powerpc: Fix new-world powermac detection

My G5 was being reported as an OldWorld in /proc/cpuinfo, which is
obviously not right... :)

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

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 72cd503d3d33..6f62af597291 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -317,7 +317,9 @@ void __init pmac_setup_arch(void)
         }
 
         /* See if newworld or oldworld */
-        ic = of_find_node_by_name(NULL, "interrupt-controller");
+        for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; )
+                if (get_property(ic, "interrupt-controller", NULL))
+                        break;
         pmac_newworld = (ic != NULL);
         if (ic)
                 of_node_put(ic);