powerpc/prom: Use of_get_next_parent() in of_get_ibm_chip_id()

Use of_get_next_parent() to simplifiy the logic in of_get_ibm_chip_id().

Original-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/prom.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -784,7 +784,6 @@ int of_get_ibm_chip_id(struct device_node *np)
		{
		of_node_get(np);
		while (np) {
		struct device_node *old = np;
		u32 chip_id;

		/*
		@@ -795,8 +794,8 @@ int of_get_ibm_chip_id(struct device_node *np)
		of_node_put(np);
		return chip_id;
		}
		np = of_get_parent(np);
		of_node_put(old);

		np = of_get_next_parent(np);
		}
		return -1;
		}