linux-kernel - [PATCH] regulator: dummy: Use devm_regulator

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Date:   Sat, 25 Sep 2021 11:55:07 +0800
From:   Zenghui Yu <yuzenghui@...wei.com>
To:     <lgirdwood@...il.com>, <broonie@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <wanghaibin.wang@...wei.com>,
        Zenghui Yu <yuzenghui@...wei.com>
Subject: [PATCH] regulator: dummy: Use devm_regulator_register()

debugfs code complained at boot time that

  debugfs: Directory 'reg-dummy-regulator-dummy' with parent 'regulator'
  already present!

if we compile kernel with DEBUG_TEST_DRIVER_REMOVE. The problem is that we
don't provide .remove() method for dummy_regulator_driver, which should
invoke regulator_unregister() on device teardown to properly free things.

Though it's harmless as dummy_pdev never gets unbound in practice, let's
use devm_regulator_register() to get rid of the inconsistency.

Signed-off-by: Zenghui Yu <yuzenghui@...wei.com>
---
 drivers/regulator/dummy.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/dummy.c b/drivers/regulator/dummy.c
index d8059f596391..24e586f93855 100644
--- a/drivers/regulator/dummy.c
+++ b/drivers/regulator/dummy.c
@@ -45,7 +45,8 @@ static int dummy_regulator_probe(struct platform_device *pdev)
 	config.dev = &pdev->dev;
 	config.init_data = &dummy_initdata;
 
-	dummy_regulator_rdev = regulator_register(&dummy_desc, &config);
+	dummy_regulator_rdev = devm_regulator_register(&pdev->dev, &dummy_desc,
+						       &config);
 	if (IS_ERR(dummy_regulator_rdev)) {
 		ret = PTR_ERR(dummy_regulator_rdev);
 		pr_err("Failed to register regulator: %d\n", ret);
-- 
2.19.1