linux-kernel - [PATCH 8/9] regulator/core: set_consumer_device

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Message-Id: <edbe125df73698f44e6c0697b7c45dc5acb2d455.1693431144.git.mirq-linux@rere.qmqm.pl>
Date:   Wed, 30 Aug 2023 23:38:57 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 8/9] regulator/core: set_consumer_device_supply: avoid copying
 const data

As consumer_dev_name might as well be const, don't copy it if not
required.

Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
 drivers/regulator/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 7c4ba090d88d..8ab4de7cadcb 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1735,7 +1735,7 @@ static int set_consumer_device_supply(struct regulator_dev *rdev,
 	new_node->supply = supply;
 
 	if (consumer_dev_name != NULL) {
-		new_node->dev_name = kstrdup(consumer_dev_name, GFP_KERNEL);
+		new_node->dev_name = kstrdup_const(consumer_dev_name, GFP_KERNEL);
 		if (new_node->dev_name == NULL) {
 			kfree(new_node);
 			return -ENOMEM;
@@ -1770,7 +1770,7 @@ static int set_consumer_device_supply(struct regulator_dev *rdev,
 
 fail:
 	mutex_unlock(&regulator_list_mutex);
-	kfree(new_node->dev_name);
+	kfree_const(new_node->dev_name);
 	kfree(new_node);
 	return -EBUSY;
 }
@@ -1782,7 +1782,7 @@ static void unset_regulator_supplies(struct regulator_dev *rdev)
 	list_for_each_entry_safe(node, n, &regulator_map_list, list) {
 		if (rdev == node->regulator) {
 			list_del(&node->list);
-			kfree(node->dev_name);
+			kfree_const(node->dev_name);
 			kfree(node);
 		}
 	}
-- 
2.39.2