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for_each_child_of_node can help to iterate through the device_node, and we don't need to use while loop. No functional change with this conversion. Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com> Link: https://patch.msgid.link/20240816021826.65190-1-zhangzekun11@huawei.com Signed-off-by: Takashi Iwai <tiwai@suse.de>