From 6900cdbfb99e8600572da340576509297a684a3a Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Fri, 19 Aug 2022 22:19:46 +0300 Subject: [PATCH] iio: imu: st_lsm6dsx: Simplify using devm_regulator_*get_enable() Use devm_regulator_bulk_get_enable() instead of open coded bulk-get, bulk-enable, add-action-to-disable-at-detach - pattern. A functional change (which seems like a bugfix) is that if regulator_bulk_get fails, the enable is not attempted. Signed-off-by: Matti Vaittinen Link: https://lore.kernel.org/r/876e58428cec056d51070e49eff559e2d7c23b12.1660934107.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 2 -- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 30 +++++----------------------- 2 files changed, 5 insertions(+), 27 deletions(-) diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h index d3a4e21bc114..07ad8027de73 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h @@ -374,7 +374,6 @@ struct st_lsm6dsx_sensor { * struct st_lsm6dsx_hw - ST IMU MEMS hw instance * @dev: Pointer to instance of struct device (I2C or SPI). * @regmap: Register map of the device. - * @regulators: VDD/VDDIO voltage regulators. * @irq: Device interrupt line (I2C or SPI). * @fifo_lock: Mutex to prevent concurrent access to the hw FIFO. * @conf_lock: Mutex to prevent concurrent FIFO configuration update. @@ -397,7 +396,6 @@ struct st_lsm6dsx_sensor { struct st_lsm6dsx_hw { struct device *dev; struct regmap *regmap; - struct regulator_bulk_data regulators[2]; int irq; struct mutex fifo_lock; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 6af2e905c161..fe5fa08b68ac 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -2177,36 +2177,20 @@ static int st_lsm6dsx_irq_setup(struct st_lsm6dsx_hw *hw) static int st_lsm6dsx_init_regulators(struct device *dev) { - struct st_lsm6dsx_hw *hw = dev_get_drvdata(dev); + /* vdd-vddio power regulators */ + static const char * const regulators[] = { "vdd", "vddio" }; int err; - /* vdd-vddio power regulators */ - hw->regulators[0].supply = "vdd"; - hw->regulators[1].supply = "vddio"; - err = devm_regulator_bulk_get(dev, ARRAY_SIZE(hw->regulators), - hw->regulators); + err = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulators), + regulators); if (err) - return dev_err_probe(dev, err, "failed to get regulators\n"); - - err = regulator_bulk_enable(ARRAY_SIZE(hw->regulators), - hw->regulators); - if (err) { - dev_err(dev, "failed to enable regulators: %d\n", err); - return err; - } + return dev_err_probe(dev, err, "failed to enable regulators\n"); msleep(50); return 0; } -static void st_lsm6dsx_chip_uninit(void *data) -{ - struct st_lsm6dsx_hw *hw = data; - - regulator_bulk_disable(ARRAY_SIZE(hw->regulators), hw->regulators); -} - int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, struct regmap *regmap) { @@ -2230,10 +2214,6 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, if (err) return err; - err = devm_add_action_or_reset(dev, st_lsm6dsx_chip_uninit, hw); - if (err) - return err; - hw->buff = devm_kzalloc(dev, ST_LSM6DSX_BUFF_SIZE, GFP_KERNEL); if (!hw->buff) return -ENOMEM; -- 2.11.0