[SPARC]: Fix bus_id[] string overflow.

dp->path_component_name can be larger than ->bus_id[]
so use a different naming scheme for this stuff.

Noticed by Jurij Smakov.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index 74bef2a..46200c4 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device.c
@@ -651,7 +651,7 @@
 	if (!parent)
 		strcpy(op->dev.bus_id, "root");
 	else
-		strcpy(op->dev.bus_id, dp->path_component_name);
+		sprintf(op->dev.bus_id, "%08x", dp->node);
 
 	if (of_device_register(op)) {
 		printk("%s: Could not register of device.\n",