We need to wait for each child to fully resume. pm_request_resume() is
asynchronous, what we need is to wait synchronously to avoid race
conditions.
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20240410023438.487017-3-yung-chuan.liao@linux.intel.comSigned-off-by: Vinod Koul <vkoul@kernel.org>