Laval社区

环境：DAYU200

系统：OpenHarmony 5.1.0 release

通过zh-cn/release-notes/OpenHarmony-v5.1.0-release.md · OpenHarmony/docs - Gitee.com自己拉取编译或者使用release的镜像

系统放置一会出现如下log：

[  167.430650] PM: suspend entry (deep)
[  169.432321] PM: suspend entry (deep)
[  173.433558] PM: suspend entry (deep)
[  181.434807] PM: suspend entry (deep)
[  197.436030] PM: suspend entry (deep)

根据log分析，kernel拒绝deep sleep模式

[  197.436030] PM: suspend entry (deep)
[  197.436069] PM: reject deep sleep

分析3568 6.6内核，发现suspend接口新增strcmp(mem_sleep_labels[state], "deep")判断(5.10内核没有这段逻辑），按照内核接口要求，应该是拒绝deep sleep，

int pm_suspend(suspend_state_t state)
{
	int error;

	if (state <= PM_SUSPEND_ON || state >= PM_SUSPEND_MAX)
		return -EINVAL;

	pr_info("suspend entry (%s)\n", mem_sleep_labels[state]);
	if (strcmp(mem_sleep_labels[state], "deep") == 0) {
		pr_info("reject deep sleep");
		return -EINVAL;
	}
	error = enter_state(state);
	if (error) {
		suspend_stats.fail++;
		dpm_save_failed_errno(error);
	} else {
		suspend_stats.success++;
	}
	pr_info("suspend exit\n");
	return error;
}
EXPORT_SYMBOL(pm_suspend);