With the devm_ad_sd_setup_buffer_and_trigger() helper, it's a bit easier
now to convert the probe of the AD7793 driver to use device-managed
functions.
Only the regulator disable requires a devm_add_action_or_reset() callback.
This change does that, cleaning up the driver a bit.
Signed-off-by: Alexandru Ardelean <[email protected]>
---
drivers/iio/adc/ad7793.c | 53 ++++++++++++----------------------------
1 file changed, 15 insertions(+), 38 deletions(-)
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index 5e980a06258e..5dab2e5b5bac 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -768,6 +768,11 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
},
};
+static void ad7793_reg_disable(void *reg)
+{
+ regulator_disable(reg);
+}
+
static int ad7793_probe(struct spi_device *spi)
{
const struct ad7793_platform_data *pdata = spi->dev.platform_data;
@@ -802,11 +807,13 @@ static int ad7793_probe(struct spi_device *spi)
if (ret)
return ret;
+ ret = devm_add_action_or_reset(&spi->dev, ad7793_reg_disable, st->reg);
+ if (ret)
+ return ret;
+
vref_mv = regulator_get_voltage(st->reg);
- if (vref_mv < 0) {
- ret = vref_mv;
- goto error_disable_reg;
- }
+ if (vref_mv < 0)
+ return vref_mv;
vref_mv /= 1000;
} else {
@@ -816,50 +823,21 @@ static int ad7793_probe(struct spi_device *spi)
st->chip_info =
&ad7793_chip_info_tbl[spi_get_device_id(spi)->driver_data];
- spi_set_drvdata(spi, indio_dev);
-
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = st->chip_info->channels;
indio_dev->num_channels = st->chip_info->num_channels;
indio_dev->info = st->chip_info->iio_info;
- ret = ad_sd_setup_buffer_and_trigger(indio_dev);
+ ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
if (ret)
- goto error_disable_reg;
+ return ret;
ret = ad7793_setup(indio_dev, pdata, vref_mv);
if (ret)
- goto error_remove_trigger;
-
- ret = iio_device_register(indio_dev);
- if (ret)
- goto error_remove_trigger;
-
- return 0;
-
-error_remove_trigger:
- ad_sd_cleanup_buffer_and_trigger(indio_dev);
-error_disable_reg:
- if (pdata->refsel != AD7793_REFSEL_INTERNAL)
- regulator_disable(st->reg);
-
- return ret;
-}
-
-static int ad7793_remove(struct spi_device *spi)
-{
- const struct ad7793_platform_data *pdata = spi->dev.platform_data;
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
- struct ad7793_state *st = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
- ad_sd_cleanup_buffer_and_trigger(indio_dev);
-
- if (pdata->refsel != AD7793_REFSEL_INTERNAL)
- regulator_disable(st->reg);
+ return ret;
- return 0;
+ return devm_iio_device_register(&spi->dev, indio_dev);
}
static const struct spi_device_id ad7793_id[] = {
@@ -881,7 +859,6 @@ static struct spi_driver ad7793_driver = {
.name = "ad7793",
},
.probe = ad7793_probe,
- .remove = ad7793_remove,
.id_table = ad7793_id,
};
module_spi_driver(ad7793_driver);
--
2.31.1