From: Alexandru Ardelean <aardelean@deviqon.com>
To: linux-kernel@vger.kernel.org
Cc: lgirdwood@gmail.com, broonie@kernel.org,
Alexandru Ardelean <aardelean@deviqon.com>
Subject: [PATCH 2/4] regulator: devres: remove devm_regulator_unregister() function
Date: Fri, 25 Jun 2021 15:23:22 +0300 [thread overview]
Message-ID: <20210625122324.327585-3-aardelean@deviqon.com> (raw)
In-Reply-To: <20210625122324.327585-1-aardelean@deviqon.com>
This API hook isn't used anywhere and most-likely exists because of the
general principle of C APIs, where if an API function does an
allocation/registration, it must also have an equivalent
deallocation/deregistration counterpart.
For devm_ functions this isn't all that true (for all cases), as the idea
of these function is to provide an auto-cleanup logic on drivers/system
de-init.
Removing this also discourages any weird logic that could be created with
such an API function.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
---
drivers/regulator/devres.c | 29 -----------------------------
include/linux/regulator/driver.h | 1 -
2 files changed, 30 deletions(-)
diff --git a/drivers/regulator/devres.c b/drivers/regulator/devres.c
index 8895f0f5ad1d..bf0d19a7fb69 100644
--- a/drivers/regulator/devres.c
+++ b/drivers/regulator/devres.c
@@ -205,35 +205,6 @@ struct regulator_dev *devm_regulator_register(struct device *dev,
}
EXPORT_SYMBOL_GPL(devm_regulator_register);
-static int devm_rdev_match(struct device *dev, void *res, void *data)
-{
- struct regulator_dev **r = res;
- if (!r || !*r) {
- WARN_ON(!r || !*r);
- return 0;
- }
- return *r == data;
-}
-
-/**
- * devm_regulator_unregister - Resource managed regulator_unregister()
- * @dev: device to supply
- * @rdev: regulator to free
- *
- * Unregister a regulator registered with devm_regulator_register().
- * Normally this function will not need to be called and the resource
- * management code will ensure that the resource is freed.
- */
-void devm_regulator_unregister(struct device *dev, struct regulator_dev *rdev)
-{
- int rc;
-
- rc = devres_release(dev, devm_rdev_release, devm_rdev_match, rdev);
- if (rc != 0)
- WARN_ON(rc);
-}
-EXPORT_SYMBOL_GPL(devm_regulator_unregister);
-
struct regulator_supply_alias_match {
struct device *dev;
const char *id;
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 4aec20387857..5447a6b33fa0 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -645,7 +645,6 @@ devm_regulator_register(struct device *dev,
const struct regulator_desc *regulator_desc,
const struct regulator_config *config);
void regulator_unregister(struct regulator_dev *rdev);
-void devm_regulator_unregister(struct device *dev, struct regulator_dev *rdev);
int regulator_notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data);
--
2.31.1
next prev parent reply other threads:[~2021-06-25 12:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-25 12:23 [PATCH 0/4] regulator: devres: remove unused device-managed unregister APIs Alexandru Ardelean
2021-06-25 12:23 ` [PATCH 1/4] regulator: devres: remove devm_regulator_unregister_notifier() function Alexandru Ardelean
2021-06-25 12:23 ` Alexandru Ardelean [this message]
2021-06-25 12:23 ` [PATCH 3/4] regulator: devres: remove devm_regulator_bulk_unregister_supply_alias() Alexandru Ardelean
2021-06-25 12:23 ` [PATCH 4/4] regulator: devres: unexport devm_regulator_unregister_supply_alias() Alexandru Ardelean
2021-07-12 10:45 ` [PATCH 0/4] regulator: devres: remove unused device-managed unregister APIs Mark Brown
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