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From:   Dmitry Osipenko <digetx@gmail.com>
To:     Qiang Yu <yuq825@gmail.com>, Rob Clark <robdclark@gmail.com>,
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Subject: [PATCH v3 05/15] opp: Change return type of devm_pm_opp_register_set_opp_helper()
Date:   Sun, 14 Mar 2021 19:33:58 +0300
Message-Id: <20210314163408.22292-6-digetx@gmail.com>
In-Reply-To: <20210314163408.22292-1-digetx@gmail.com>
References: <20210314163408.22292-1-digetx@gmail.com>
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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>
---
 drivers/opp/core.c     | 18 ++++++------------
 include/linux/pm_opp.h |  6 +++---
 2 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 34b054bbb28f..4f44f02e6049 100644
--- 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 3f8894012429..865426b525a8 100644
--- 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 +337,11 @@ 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 *
+static 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)
-- 
2.30.2