From a935424bb658f9ca37eb5e94119b857998341356 Mon Sep 17 00:00:00 2001
From: Ulf Hansson <ulf.hansson@linaro.org>
Date: Wed, 10 Jan 2018 21:31:56 +0100
Subject: [PATCH] PM / domains: Don't skip driver's ->suspend|resume_noirq()
 callbacks
Git-commit: a935424bb658f9ca37eb5e94119b857998341356
References: git-fixes
Patch-mainline: v4.16-rc1

Commit 10da65423fdb (PM / Domains: Call driver's noirq callbacks)
started to respect driver's noirq callbacks, but while doing that it
also introduced a few potential problems.

More precisely, in genpd_finish_suspend() and genpd_resume_noirq()
the noirq callbacks at the driver level should be invoked, no matter
of whether dev->power.wakeup_path is set or not.

Additionally, the commit in question also made genpd_resume_noirq()
to ignore the return value from pm_runtime_force_resume().

Let's fix both these issues!

Fixes: 10da65423fdb (PM / Domains: Call driver's noirq callbacks)
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/base/power/domain.c |   30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -909,15 +909,12 @@ static int pm_genpd_prepare(struct devic
 static int genpd_finish_suspend(struct device *dev, bool poweroff)
 {
 	struct generic_pm_domain *genpd;
-	int ret;
+	int ret = 0;
 
 	genpd = dev_to_genpd(dev);
 	if (IS_ERR(genpd))
 		return -EINVAL;
 
-	if (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev))
-		return 0;
-
 	if (poweroff)
 		ret = pm_generic_poweroff_noirq(dev);
 	else
@@ -925,10 +922,18 @@ static int genpd_finish_suspend(struct d
 	if (ret)
 		return ret;
 
+	if (dev->power.wakeup_path && genpd_is_active_wakeup(genpd))
+		return 0;
+
 	if (genpd->dev_ops.stop && genpd->dev_ops.start) {
 		ret = pm_runtime_force_suspend(dev);
-		if (ret)
+		if (ret) {
+			if (poweroff)
+				pm_generic_restore_noirq(dev);
+			else
+				pm_generic_resume_noirq(dev);
 			return ret;
+		}
 	}
 
 	genpd_lock(genpd);
@@ -962,7 +967,7 @@ static int pm_genpd_suspend_noirq(struct
 static int pm_genpd_resume_noirq(struct device *dev)
 {
 	struct generic_pm_domain *genpd;
-	int ret = 0;
+	int ret;
 
 	dev_dbg(dev, "%s()\n", __func__);
 
@@ -971,21 +976,20 @@ static int pm_genpd_resume_noirq(struct
 		return -EINVAL;
 
 	if (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev))
-		return 0;
+		return pm_generic_resume_noirq(dev);
 
 	genpd_lock(genpd);
 	genpd_sync_power_on(genpd, true, 0);
 	genpd->suspended_count--;
 	genpd_unlock(genpd);
 
-	if (genpd->dev_ops.stop && genpd->dev_ops.start)
+	if (genpd->dev_ops.stop && genpd->dev_ops.start) {
 		ret = pm_runtime_force_resume(dev);
+		if (ret)
+			return ret;
+	}
 
-	ret = pm_generic_resume_noirq(dev);
-	if (ret)
-		return ret;
-
-	return ret;
+	return pm_generic_resume_noirq(dev);
 }
 
 /**