[PATCH] regulator: hi655x: Fix pass wrong pointer to config.driver_data

[PATCH] regulator: hi655x: Fix pass wrong pointer to config.driver_data

[Axel Lin]

Current code sets config.driver_data to a zero initialized regulator
which is obviously wrong. Fix it.

Fixes: 4618119b9be5 ("regulator: hi655x: enable regulator for hi655x PMIC")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 drivers/regulator/hi655x-regulator.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/regulator/hi655x-regulator.c b/drivers/regulator/hi655x-regulator.c
index 68cdb173196d..556bb73f3329 100644
--- a/drivers/regulator/hi655x-regulator.c
+++ b/drivers/regulator/hi655x-regulator.c
@@ -72,7 +72,7 @@ enum hi655x_regulator_id {
 static int hi655x_is_enabled(struct regulator_dev *rdev)
 {
 	unsigned int value = 0;
-	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);
+	const struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);
 
 	regmap_read(rdev->regmap, regulator->status_reg, &value);
 	return (value & rdev->desc->enable_mask);
@@ -80,7 +80,7 @@ static int hi655x_is_enabled(struct regulator_dev *rdev)
 
 static int hi655x_disable(struct regulator_dev *rdev)
 {
-	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);
+	const struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);
 
 	return regmap_write(rdev->regmap, regulator->disable_reg,
 			    rdev->desc->enable_mask);
@@ -169,7 +169,6 @@ static const struct hi655x_regulator regulators[] = {
 static int hi655x_regulator_probe(struct platform_device *pdev)
 {
 	unsigned int i;
-	struct hi655x_regulator *regulator;
 	struct hi655x_pmic *pmic;
 	struct regulator_config config = { };
 	struct regulator_dev *rdev;
@@ -180,22 +179,17 @@ static int hi655x_regulator_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	regulator = devm_kzalloc(&pdev->dev, sizeof(*regulator), GFP_KERNEL);
-	if (!regulator)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, regulator);
-
 	config.dev = pdev->dev.parent;
 	config.regmap = pmic->regmap;
-	config.driver_data = regulator;
 	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+		config.driver_data = (void *) &regulators[i];
+
 		rdev = devm_regulator_register(&pdev->dev,
 					       &regulators[i].rdesc,
 					       &config);
 		if (IS_ERR(rdev)) {
 			dev_err(&pdev->dev, "failed to register regulator %s\n",
-				regulator->rdesc.name);
+				regulators[i].rdesc.name);
 			return PTR_ERR(rdev);
 		}
 	}
-- 
2.25.1

Re: [PATCH] regulator: hi655x: Fix pass wrong pointer to config.driver_data

[Mark Brown]

On Sun, 20 Jun 2021 21:27:15 +0800, Axel Lin wrote:
> Current code sets config.driver_data to a zero initialized regulator
> which is obviously wrong. Fix it.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: hi655x: Fix pass wrong pointer to config.driver_data
      commit: 61eb1b24f9e4f4e0725aa5f8164a932c933f3339

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark