static int __device_suspend_late()

in power/main.c [1386:1449]

• 52 lines of code
• 17 McCabe index (conditional complexity)

static int __device_suspend_late(struct device *dev, pm_message_t state, bool async)
{
	pm_callback_t callback = NULL;
	const char *info = NULL;
	int error = 0;

	TRACE_DEVICE(dev);
	TRACE_SUSPEND(0);

	__pm_runtime_disable(dev, false);

	dpm_wait_for_subordinate(dev, async);

	if (async_error)
		goto Complete;

	if (pm_wakeup_pending()) {
		async_error = -EBUSY;
		goto Complete;
	}

	if (dev->power.syscore || dev->power.direct_complete)
		goto Complete;

	if (dev->pm_domain) {
		info = "late power domain ";
		callback = pm_late_early_op(&dev->pm_domain->ops, state);
	} else if (dev->type && dev->type->pm) {
		info = "late type ";
		callback = pm_late_early_op(dev->type->pm, state);
	} else if (dev->class && dev->class->pm) {
		info = "late class ";
		callback = pm_late_early_op(dev->class->pm, state);
	} else if (dev->bus && dev->bus->pm) {
		info = "late bus ";
		callback = pm_late_early_op(dev->bus->pm, state);
	}
	if (callback)
		goto Run;

	if (dev_pm_skip_suspend(dev))
		goto Skip;

	if (dev->driver && dev->driver->pm) {
		info = "late driver ";
		callback = pm_late_early_op(dev->driver->pm, state);
	}

Run:
	error = dpm_run_callback(callback, dev, state, info);
	if (error) {
		async_error = error;
		goto Complete;
	}
	dpm_propagate_wakeup_to_parent(dev);

Skip:
	dev->power.is_late_suspended = true;

Complete:
	TRACE_SUSPEND(error);
	complete_all(&dev->power.completion);
	return error;
}