opp: Change return type of devm_pm_opp_register_set_opp_helper()

Make devm_pm_opp_register_set_opp_helper() to return error code instead
of opp_table pointer in order to have return type consistent with the
other resource-managed OPP helpers.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 956ea22..89c3b0b 100644 (file)
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -2295,25 +2295,19 @@ static void devm_pm_opp_unregister_set_opp_helper(void *data)
  *
  * This is a resource-managed version of dev_pm_opp_register_set_opp_helper().
  *
- * Return: pointer to 'struct opp_table' on success and errorno otherwise.
+ * Return: 0 on success and errorno otherwise.
  */
-struct opp_table *
-devm_pm_opp_register_set_opp_helper(struct device *dev,
-                                   int (*set_opp)(struct dev_pm_set_opp_data *data))
+int devm_pm_opp_register_set_opp_helper(struct device *dev,
+                                       int (*set_opp)(struct dev_pm_set_opp_data *data))
 {
        struct opp_table *opp_table;
-       int err;
 
        opp_table = dev_pm_opp_register_set_opp_helper(dev, set_opp);
        if (IS_ERR(opp_table))
-               return opp_table;
-
-       err = devm_add_action_or_reset(dev, devm_pm_opp_unregister_set_opp_helper,
-                                      opp_table);
-       if (err)
-               return ERR_PTR(err);
+               return PTR_ERR(opp_table);
 
-       return opp_table;
+       return devm_add_action_or_reset(dev, devm_pm_opp_unregister_set_opp_helper,
+                                       opp_table);
 }
 EXPORT_SYMBOL_GPL(devm_pm_opp_register_set_opp_helper);
 

diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 3f88940..2cf9694 100644 (file)
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -155,7 +155,7 @@ void dev_pm_opp_put_clkname(struct opp_table *opp_table);
 int devm_pm_opp_set_clkname(struct device *dev, const char *name);
 struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
 void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
-struct opp_table *devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
+int devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
 struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
 void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
 struct opp_table *devm_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
@@ -337,11 +337,10 @@ static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device
 
 static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) {}
 
-static inline struct opp_table *
-devm_pm_opp_register_set_opp_helper(struct device *dev,
+static inline int devm_pm_opp_register_set_opp_helper(struct device *dev,
                                    int (*set_opp)(struct dev_pm_set_opp_data *data))
 {
-       return ERR_PTR(-EOPNOTSUPP);
+       return -EOPNOTSUPP;
 }
 
 static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)