linux-kernel - [PATCH] PM / Runtime: honor device autosuspend in pm_generic_runtime

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Message-Id: <1368443127-9636-1-git-send-email-mika.westerberg@linux.intel.com>
Date:	Mon, 13 May 2013 14:05:27 +0300
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	linux-pm@...r.kernel.org
Cc:	Pavel Machek <pavel@....cz>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Len Brown <len.brown@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] PM / Runtime: honor device autosuspend in pm_generic_runtime_idle()

If the device is using autosuspend we should honor that and call
pm_runtime_autosuspend() instead of pm_runtime_suspend(). Failing to do so
causes the device to be suspended immediately even though it expects to be
suspended only when the autosuspend delay is expired.

Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
---
 drivers/base/power/generic_ops.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c
index bfd898b..19786ca 100644
--- a/drivers/base/power/generic_ops.c
+++ b/drivers/base/power/generic_ops.c
@@ -29,7 +29,10 @@ int pm_generic_runtime_idle(struct device *dev)
 			return ret;
 	}
 
-	pm_runtime_suspend(dev);
+	if (dev->power.use_autosuspend)
+		pm_runtime_autosuspend(dev);
+	else
+		pm_runtime_suspend(dev);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(pm_generic_runtime_idle);
-- 
1.7.10.4

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