linux-kernel - [PATCH 01/27] PM: Add helper pm_runtime_last_busy_and

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Date:	Wed, 24 Sep 2014 21:44:51 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	subhransu.s.prusty@...el.com, vinod.koul@...el.com,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
	Randy Dunlap <rdunlap@...radead.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Alan Stern <stern@...land.harvard.edu>,
	linux-pm@...r.kernel.org, linux-doc@...r.kernel.org
Subject: [PATCH 01/27] PM: Add helper pm_runtime_last_busy_and_autosuspend()

From: Subhransu S. Prusty <subhransu.s.prusty@...el.com>

pm_runtime_mark_last_busy and pm_runtime_put_autosuspend are used together
in quite a lot of places. Add a helper for these.
Also updated Documentation for this

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@...el.com>
Signed-off-by: Vinod Koul <vinod.koul@...el.com>
---
 Documentation/power/runtime_pm.txt |    4 ++++
 include/linux/pm_runtime.h         |    6 ++++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt
index f32ce54..5d9565b 100644
--- a/Documentation/power/runtime_pm.txt
+++ b/Documentation/power/runtime_pm.txt
@@ -490,6 +490,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
       power.use_autosuspend isn't set, otherwise returns the expiration time
       in jiffies
 
+   int pm_runtime_last_busy_and_autosuspend(struct device *dev);
+    - invoke pm_runtime_mark_last_busy(dev) and then run
+      pm_runtime_put_autosuspend(dev) and return its result
+
 It is safe to execute the following helper functions from interrupt context:
 
 pm_request_idle()
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 367f49b..256ec50 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -277,4 +277,10 @@ static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
 	__pm_runtime_use_autosuspend(dev, false);
 }
 
+static inline int pm_runtime_last_busy_and_autosuspend(struct device *dev)
+{
+	pm_runtime_mark_last_busy(dev);
+	return pm_runtime_put_autosuspend(dev);
+}
+
 #endif
-- 
1.7.0.4

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