[PATCH v3 03/15] opp: Add devres wrapper for dev_pm_opp_set_supported_hw

[Dmitry Osipenko]

From: Yangtao Li <tiny.win...@gmail.com>

Add devres wrapper for dev_pm_opp_set_supported_hw() to simplify drivers
code.

Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
---
 drivers/opp/core.c     | 29 +++++++++++++++++++++++++++++
 include/linux/pm_opp.h |  8 ++++++++
 2 files changed, 37 insertions(+)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 6217af05141f..34b054bbb28f 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1857,6 +1857,35 @@ void dev_pm_opp_put_supported_hw(struct opp_table 
*opp_table)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_put_supported_hw);
 
+static void devm_pm_opp_supported_hw_release(void *data)
+{
+       dev_pm_opp_put_supported_hw(data);
+}
+
+/**
+ * devm_pm_opp_set_supported_hw() - Set supported platforms
+ * @dev: Device for which supported-hw has to be set.
+ * @versions: Array of hierarchy of versions to match.
+ * @count: Number of elements in the array.
+ *
+ * This is a resource-managed variant of dev_pm_opp_set_supported_hw().
+ *
+ * Return: 0 on success and errorno otherwise.
+ */
+int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
+                                unsigned int count)
+{
+       struct opp_table *opp_table;
+
+       opp_table = dev_pm_opp_set_supported_hw(dev, versions, count);
+       if (IS_ERR(opp_table))
+               return PTR_ERR(opp_table);
+
+       return devm_add_action_or_reset(dev, devm_pm_opp_supported_hw_release,
+                                       opp_table);
+}
+EXPORT_SYMBOL_GPL(devm_pm_opp_set_supported_hw);
+
 /**
  * dev_pm_opp_set_prop_name() - Set prop-extn name
  * @dev: Device for which the prop-name has to be set.
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 3e667af57211..e455b187e405 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -144,6 +144,7 @@ int dev_pm_opp_unregister_notifier(struct device *dev, 
struct notifier_block *nb
 
 struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 
*versions, unsigned int count);
 void dev_pm_opp_put_supported_hw(struct opp_table *opp_table);
+int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, 
unsigned int count);
 struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char 
*name);
 void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
 struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * 
const names[], unsigned int count);
@@ -321,6 +322,13 @@ static inline struct opp_table 
*dev_pm_opp_set_supported_hw(struct device *dev,
 
 static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {}
 
+static inline int devm_pm_opp_set_supported_hw(struct device *dev,
+                                              const u32 *versions,
+                                              unsigned int count)
+{
+       return -EOPNOTSUPP;
+}
+
 static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct 
device *dev,
                        int (*set_opp)(struct dev_pm_set_opp_data *data))
 {
-- 
2.30.2