linux-kernel - [PATCH 5/7] cpufreq: balance out cpufreq_cpu_{get,put} for scaling drivers using setpolicy

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Message-Id: <1360088646-19104-6-git-send-email-dirk.brandewie@gmail.com>
Date:	Tue,  5 Feb 2013 10:24:04 -0800
From:	dirk.brandewie@...il.com
To:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Cc:	Dirk Brandewie <dirk.brandewie@...il.com>,
	Dirk Brandewie <dirk.j.brandewie@...el.com>
Subject: [PATCH 5/7] cpufreq: balance out cpufreq_cpu_{get,put} for scaling drivers using setpolicy

From: Dirk Brandewie <dirk.brandewie@...il.com>

There is an additional reference added to the driver in
cpufreq_add_dev()  that is removed in__cpufreq_governor() if the
driver implements target().  Remove the last reference when the
driver implements setpolicy()

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@...el.com>
---
 drivers/cpufreq/cpufreq.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 622e282..d17477b 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1049,6 +1049,9 @@ static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif
 	if (cpufreq_driver->target)
 		__cpufreq_governor(data, CPUFREQ_GOV_STOP);
 
+	if (cpufreq_driver->setpolicy)
+		cpufreq_cpu_put(data);
+
 #ifdef CONFIG_HOTPLUG_CPU
 	if (!cpufreq_driver->setpolicy)
 		strncpy(per_cpu(cpufreq_cpu_governor, cpu),
-- 
1.7.7.6

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