powerpc/numa: Use of_get_next_parent to simplify code

of_get_next_parent can be used to simplify the while() loop and
avoid the need of a temp variable.

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

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 8b9502a..b85d442 100644 (file)
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -276,7 +276,6 @@ static int of_node_to_nid_single(struct device_node *device)
 /* Walk the device tree upwards, looking for an associativity id */
 int of_node_to_nid(struct device_node *device)
 {
-       struct device_node *tmp;
        int nid = -1;
 
        of_node_get(device);
@@ -285,9 +284,7 @@ int of_node_to_nid(struct device_node *device)
                if (nid != -1)
                        break;
 
-               tmp = device;
-               device = of_get_parent(tmp);
-               of_node_put(tmp);
+               device = of_get_next_parent(device);
        }
        of_node_put(device);