macintosh: windfarm: use for_each_child_of_node() macro

Use for_each_child_of_node() macro instead of open coding it.

Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200914061411.3356-1-miaoqinglang@huawei.com

diff --git a/drivers/macintosh/windfarm_smu_sat.c b/drivers/macintosh/windfarm_smu_sat.c
index cb75dc03561670c2864ca4054355f5db1e0043ec..e46e1153a0b4354d6d43f28136bdf8f4050a6fc2 100644 (file)
--- a/drivers/macintosh/windfarm_smu_sat.c
+++ b/drivers/macintosh/windfarm_smu_sat.c
@@ -216,8 +216,7 @@ static int wf_sat_probe(struct i2c_client *client,
 
        vsens[0] = vsens[1] = -1;
        isens[0] = isens[1] = -1;
-       child = NULL;
-       while ((child = of_get_next_child(dev, child)) != NULL) {
+       for_each_child_of_node(dev, child) {
                reg = of_get_property(child, "reg", NULL);
                loc = of_get_property(child, "location", NULL);
                if (reg == NULL || loc == NULL)