On Mon, 19 Feb 2024 09:41:40 +0200
Arturas Moskvinas <arturas.moskvinas@xxxxxxxxx> wrote:
> Use devm_* APIs to enable/disable regulator and to register in IIO infrastructure.
>
> Signed-off-by: Arturas Moskvinas <arturas.moskvinas@xxxxxxxxx>
Applied to the togreg branch of iio.git. Initially pushed out as testing
to let 0-day have a first go at pointing out what we missed in review.
Thanks,
Jonathan
>
> ---
> v1 -> v2:
> - Use devm_add_action_or_reset instead of devm_regulator_get_enable to automate disabling regulator
> - Remove empty mcp320x_remove function
> ---
> drivers/iio/adc/mcp320x.c | 29 +++++++++--------------------
> 1 file changed, 9 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c
> index f3b81798b3c9..da1421bd7b62 100644
> --- a/drivers/iio/adc/mcp320x.c
> +++ b/drivers/iio/adc/mcp320x.c
> @@ -371,6 +371,11 @@ static const struct mcp320x_chip_info mcp320x_chip_infos[] = {
> },
> };
>
> +static void mcp320x_regulator_disable(void *reg)
> +{
> + regulator_disable(reg);
> +}
> +
> static int mcp320x_probe(struct spi_device *spi)
> {
> struct iio_dev *indio_dev;
> @@ -388,7 +393,6 @@ static int mcp320x_probe(struct spi_device *spi)
> indio_dev->name = spi_get_device_id(spi)->name;
> indio_dev->modes = INDIO_DIRECT_MODE;
> indio_dev->info = &mcp320x_info;
> - spi_set_drvdata(spi, indio_dev);
>
> device_index = spi_get_device_id(spi)->driver_data;
> chip_info = &mcp320x_chip_infos[device_index];
> @@ -445,27 +449,13 @@ static int mcp320x_probe(struct spi_device *spi)
> if (ret < 0)
> return ret;
>
> - mutex_init(&adc->lock);
> -
> - ret = iio_device_register(indio_dev);
> + ret = devm_add_action_or_reset(&spi->dev, mcp320x_regulator_disable, adc->reg);
> if (ret < 0)
> - goto reg_disable;
> -
> - return 0;
> -
> -reg_disable:
> - regulator_disable(adc->reg);
> -
> - return ret;
> -}
> + return ret;
>
> -static void mcp320x_remove(struct spi_device *spi)
> -{
> - struct iio_dev *indio_dev = spi_get_drvdata(spi);
> - struct mcp320x *adc = iio_priv(indio_dev);
> + mutex_init(&adc->lock);
>
> - iio_device_unregister(indio_dev);
> - regulator_disable(adc->reg);
> + return devm_iio_device_register(&spi->dev, indio_dev);
> }
>
> static const struct of_device_id mcp320x_dt_ids[] = {
> @@ -520,7 +510,6 @@ static struct spi_driver mcp320x_driver = {
> .of_match_table = mcp320x_dt_ids,
> },
> .probe = mcp320x_probe,
> - .remove = mcp320x_remove,
> .id_table = mcp320x_id,
> };
> module_spi_driver(mcp320x_driver);
>
> base-commit: 8d3dea210042f54b952b481838c1e7dfc4ec751d
