linux-kernel - [PATCH 7/8] regulator: pca9450: Constify pointers to 'regulator

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Message-Id: <20251126-container-of-const-regulator-v1-7-eeec378144d4@oss.qualcomm.com>
Date: Wed, 26 Nov 2025 17:58:50 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
        Bartosz Golaszewski <brgl@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
        Samuel Kayode <samkay014@...il.com>,
        Matti Vaittinen <mazziesaccount@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, imx@...ts.linux.dev,
        Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
Subject: [PATCH 7/8] regulator: pca9450: Constify pointers to
 'regulator_desc' wrap struct

Pointer to 'struct regulator_desc' is a pointer to const and the
wrapping structure (container) is not being modified, thus entire syntax
can be replaced to preferred and safer container_of_const().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
---
 drivers/regulator/pca9450-regulator.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c
index 32780c311ccd..5fa868264250 100644
--- a/drivers/regulator/pca9450-regulator.c
+++ b/drivers/regulator/pca9450-regulator.c
@@ -249,7 +249,7 @@ static int buck_set_dvs(const struct regulator_desc *desc,
 	}
 
 	if (ret == 0) {
-		struct pca9450_regulator_desc *regulator = container_of(desc,
+		const struct pca9450_regulator_desc *regulator = container_of_const(desc,
 					struct pca9450_regulator_desc, desc);
 
 		/* Enable DVS control through PMIC_STBY_REQ for this BUCK */
@@ -263,7 +263,7 @@ static int pca9450_set_dvs_levels(struct device_node *np,
 			    const struct regulator_desc *desc,
 			    struct regulator_config *cfg)
 {
-	struct pca9450_regulator_desc *data = container_of(desc,
+	const struct pca9450_regulator_desc *data = container_of_const(desc,
 					struct pca9450_regulator_desc, desc);
 	const struct pc9450_dvs_config *dvs = &data->dvs;
 	unsigned int reg, mask;
@@ -308,7 +308,7 @@ static inline unsigned int pca9450_map_mode(unsigned int mode)
 
 static int pca9450_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
 {
-	struct pca9450_regulator_desc *desc = container_of(rdev->desc,
+	const struct pca9450_regulator_desc *desc = container_of_const(rdev->desc,
 					struct pca9450_regulator_desc, desc);
 	const struct pc9450_dvs_config *dvs = &desc->dvs;
 	int val;
@@ -333,7 +333,7 @@ static int pca9450_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
 
 static unsigned int pca9450_buck_get_mode(struct regulator_dev *rdev)
 {
-	struct pca9450_regulator_desc *desc = container_of(rdev->desc,
+	const struct pca9450_regulator_desc *desc = container_of_const(rdev->desc,
 					struct pca9450_regulator_desc, desc);
 	const struct pc9450_dvs_config *dvs = &desc->dvs;
 	int ret = 0, regval;

-- 
2.48.1