[PATCH v3 06/15] opp: Change return type of devm_pm_opp_attach_genpd()

[Dmitry Osipenko <digetx@xxxxxxxxx>]

Make devm_pm_opp_attach_genpd() 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@xxxxxxxxx>
---
 drivers/opp/core.c     | 18 ++++++------------
 include/linux/pm_opp.h |  9 +++++----
 2 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 4f44f02e6049..2076b12c039b 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -2460,25 +2460,19 @@ static void devm_pm_opp_detach_genpd(void *data)
  *
  * This is a resource-managed version of dev_pm_opp_attach_genpd().
  *
- * Return: pointer to 'struct opp_table' on success and errorno otherwise.
+ * Return: 0 on success and errorno otherwise.
  */
-struct opp_table *
-devm_pm_opp_attach_genpd(struct device *dev, const char **names,
-			 struct device ***virt_devs)
+int devm_pm_opp_attach_genpd(struct device *dev, const char **names,
+			     struct device ***virt_devs)
 {
 	struct opp_table *opp_table;
-	int err;
 
 	opp_table = dev_pm_opp_attach_genpd(dev, names, virt_devs);
 	if (IS_ERR(opp_table))
-		return opp_table;
-
-	err = devm_add_action_or_reset(dev, devm_pm_opp_detach_genpd,
-				       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_detach_genpd,
+					opp_table);
 }
 EXPORT_SYMBOL_GPL(devm_pm_opp_attach_genpd);
 
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 865426b525a8..a5ae69c40ea7 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -158,7 +158,7 @@ void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
 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);
+int devm_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
 struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table, struct opp_table *dst_table, struct dev_pm_opp *src_opp);
 int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
 int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
@@ -384,10 +384,11 @@ static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, cons
 
 static inline void dev_pm_opp_detach_genpd(struct opp_table *opp_table) {}
 
-static inline struct opp_table *devm_pm_opp_attach_genpd(struct device *dev,
-				const char **names, struct device ***virt_devs)
+static inline int devm_pm_opp_attach_genpd(struct device *dev,
+					   const char **names,
+					   struct device ***virt_devs)
 {
-	return ERR_PTR(-EOPNOTSUPP);
+	return -EOPNOTSUPP;
 }
 
 static inline struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table,
-- 
2.30.2