--- zzzz-none-000/linux-3.10.107/arch/powerpc/sysdev/mpc5xxx_clocks.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/sysdev/mpc5xxx_clocks.c	2021-02-04 17:41:59.000000000 +0000
@@ -13,7 +13,6 @@
 
 unsigned long mpc5xxx_get_bus_frequency(struct device_node *node)
 {
-	struct device_node *np;
 	const unsigned int *p_bus_freq = NULL;
 
 	of_node_get(node);
@@ -22,12 +21,9 @@
 		if (p_bus_freq)
 			break;
 
-		np = of_get_parent(node);
-		of_node_put(node);
-		node = np;
+		node = of_get_next_parent(node);
 	}
-	if (node)
-		of_node_put(node);
+	of_node_put(node);
 
 	return p_bus_freq ? *p_bus_freq : 0;
 }