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for_each_available_child_of_node() can help to iterate through the device_node, and we don't need to use while loop. Besides, the purpose of the while loop is to find a device_node which fits the condition "child_req_np == ref_np", we can just read the property of "child_np" directly in for_each_available_child_of_node(). No functional change with such conversion. Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com> Link: https://lore.kernel.org/r/20240821034022.27394-2-zhangzekun11@huawei.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>