From 1cc55204b0dbba0ca09cc14624cbbeeb2d35742f Mon Sep 17 00:00:00 2001
From: Dmitry Osipenko <digetx@gmail.com>
Date: Mon, 20 Sep 2021 20:22:47 +0300
Subject: [PATCH] PM / devfreq: Add devm_devfreq_add_governor()
Add resource-managed variant of devfreq_add_governor().
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/devfreq/devfreq.c | 26 ++++++++++++++++++++++++++
drivers/devfreq/governor.h | 3 +++
2 files changed, 29 insertions(+)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 85faa7a5c7d12..4579eefb8fe72 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -1301,6 +1301,32 @@ int devfreq_add_governor(struct devfreq_governor *governor)
}
EXPORT_SYMBOL(devfreq_add_governor);
+static void devm_devfreq_remove_governor(void *governor)
+{
+ WARN_ON(devfreq_remove_governor(governor));
+}
+
+/**
+ * devm_devfreq_add_governor() - Add devfreq governor
+ * @dev: device which adds devfreq governor
+ * @governor: the devfreq governor to be added
+ *
+ * This is a resource-managed variant of devfreq_add_governor().
+ */
+int devm_devfreq_add_governor(struct device *dev,
+ struct devfreq_governor *governor)
+{
+ int err;
+
+ err = devfreq_add_governor(governor);
+ if (err)
+ return err;
+
+ return devm_add_action_or_reset(dev, devm_devfreq_remove_governor,
+ governor);
+}
+EXPORT_SYMBOL(devm_devfreq_add_governor);
+
/**
* devfreq_remove_governor() - Remove devfreq feature from a device.
* @governor: the devfreq governor to be removed
diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h
index 2d69a0ce6291b..002a7d67e39d4 100644
--- a/drivers/devfreq/governor.h
+++ b/drivers/devfreq/governor.h
@@ -84,6 +84,9 @@ void devfreq_update_interval(struct devfreq *devfreq, unsigned int *delay);
int devfreq_add_governor(struct devfreq_governor *governor);
int devfreq_remove_governor(struct devfreq_governor *governor);
+int devm_devfreq_add_governor(struct device *dev,
+ struct devfreq_governor *governor);
+
int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
int devfreq_update_target(struct devfreq *devfreq, unsigned long freq);
--
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