On Fri, 19 Aug 2022 22:19:46 +0300
Matti Vaittinen <mazziesaccount@xxxxxxxxx> wrote:
> 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 <mazziesaccount@xxxxxxxxx>
Applied with similar ordering, patch naming and spacing tweaks to earlier patches.
>
> ---
> v2 => v3
> Split to own patch.
> ---
> 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 a86dd29a4738..03238c64c777 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> @@ -372,7 +372,6 @@ 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.
> @@ -395,7 +394,6 @@ 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 b5e4a4113652..c328d1a36d34 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -2172,36 +2172,20 @@ 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);
> 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);
> - if (err)
> - return dev_err_probe(dev, err, "failed to get regulators\n");
> + static const char * const regulators[] = {"vdd", "vddio"};
>
> - err = regulator_bulk_enable(ARRAY_SIZE(hw->regulators),
> - hw->regulators);
> - if (err) {
> - dev_err(dev, "failed to enable regulators: %d\n", err);
> - return err;
> - }
> + err = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulators),
> + regulators);
> + if (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)
> {
> @@ -2225,10 +2209,6 @@ 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;
