[SUNZILOG]: Adapt sun4u get_zs for Peters new scanning scheme.

drivers/serial/sunzilog.c

@@ -1036,22 +1036,10 @@ static void __init sunzilog_alloc_tables(void)
 /* We used to attempt to use the address property of the Zilog device node
  * but that totally is not necessary on sparc64.
  */
-static struct zilog_layout * __init get_zs_sun4u(int chip, int node)
+static struct zilog_layout * __init get_zs_sun4u(int chip, int zsnode)
 {
-	unsigned long mapped_addr = 0xdeadbeefUL;
+	unsigned long mapped_addr;
 	unsigned int sun4u_ino;
-	int zsnode, seen;
-
-	zsnode = node;
-	seen = 0;
-	while (zsnode) {
-		int slave;
-
-		zsnode = prom_searchsiblings(zsnode, "zs");
-		if (zsnode == 0 || zsnode == -1)
-			break;
-		slave = prom_getintdefault(zsnode, "slave", -1);
-		if ((slave == chip) || (seen == chip)) {
 	struct sbus_bus *sbus = NULL;
 	struct sbus_dev *sdev = NULL;
 	int err;
@@ -1111,16 +1099,6 @@ static struct zilog_layout * __init get_zs_sun4u(int chip, int node)
 			zilog_irq = sbus_build_irq(sbus_root, sun4u_ino);
 		}
 	}
-			break;
-		}
-		zsnode = prom_getsibling(zsnode);
-		seen++;
-	}
-
-	if (zsnode == 0 || zsnode == -1) {
-		prom_printf("SunZilog: Cannot find Zilog %d in get_zs_sun4u.\n", chip);
-		prom_halt();
-	}
 
 	return (struct zilog_layout *) mapped_addr;
 }