6.18-stable review patch. If anyone has any objections, please let me know.
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From: Haotian Zhang vulab@iscas.ac.cn
[ Upstream commit 2f88425ef590b7fcc2324334b342e048edc144a9 ]
In sy7636a_sensor_probe(), regulator_enable() is called but if devm_hwmon_device_register_with_info() fails, the function returns without calling regulator_disable(), leaving the regulator enabled and leaking the reference count.
Switch to devm_regulator_get_enable() to automatically manage the regulator resource.
Fixes: de34a4053250 ("hwmon: sy7636a: Add temperature driver for sy7636a") Suggested-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Haotian Zhang vulab@iscas.ac.cn Link: https://lore.kernel.org/r/20251126162602.2086-1-vulab@iscas.ac.cn Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hwmon/sy7636a-hwmon.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/hwmon/sy7636a-hwmon.c b/drivers/hwmon/sy7636a-hwmon.c index a12fc0ce70e76..d51daaf63d632 100644 --- a/drivers/hwmon/sy7636a-hwmon.c +++ b/drivers/hwmon/sy7636a-hwmon.c @@ -66,18 +66,13 @@ static const struct hwmon_chip_info sy7636a_chip_info = { static int sy7636a_sensor_probe(struct platform_device *pdev) { struct regmap *regmap = dev_get_regmap(pdev->dev.parent, NULL); - struct regulator *regulator; struct device *hwmon_dev; int err;
if (!regmap) return -EPROBE_DEFER;
- regulator = devm_regulator_get(&pdev->dev, "vcom"); - if (IS_ERR(regulator)) - return PTR_ERR(regulator); - - err = regulator_enable(regulator); + err = devm_regulator_get_enable(&pdev->dev, "vcom"); if (err) return err;