[PATCH] iio: adc: max1027: Use device-managed APIs

From: Chuhong Yuan
Date: Thu Aug 08 2019 - 10:26:59 EST


Use device-managed APIs to simplify the code.

Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
---
drivers/iio/adc/max1027.c | 30 +++++++-----------------------
1 file changed, 7 insertions(+), 23 deletions(-)

diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index da84adfdb819..f1b90c544b82 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -427,8 +427,9 @@ static int max1027_probe(struct spi_device *spi)
return -ENOMEM;
}

- ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
- &max1027_trigger_handler, NULL);
+ ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+ &iio_pollfunc_store_time,
+ &max1027_trigger_handler, NULL);
if (ret < 0) {
dev_err(&indio_dev->dev, "Failed to setup buffer\n");
return ret;
@@ -439,7 +440,7 @@ static int max1027_probe(struct spi_device *spi)
if (st->trig == NULL) {
ret = -ENOMEM;
dev_err(&indio_dev->dev, "Failed to allocate iio trigger\n");
- goto fail_trigger_alloc;
+ return ret;
}

st->trig->ops = &max1027_trigger_ops;
@@ -454,7 +455,7 @@ static int max1027_probe(struct spi_device *spi)
spi->dev.driver->name, st->trig);
if (ret < 0) {
dev_err(&indio_dev->dev, "Failed to allocate IRQ.\n");
- goto fail_dev_register;
+ return ret;
}

/* Disable averaging */
@@ -462,33 +463,16 @@ static int max1027_probe(struct spi_device *spi)
ret = spi_write(st->spi, &st->reg, 1);
if (ret < 0) {
dev_err(&indio_dev->dev, "Failed to configure averaging register\n");
- goto fail_dev_register;
- }
-
- ret = iio_device_register(indio_dev);
- if (ret < 0) {
- dev_err(&indio_dev->dev, "Failed to register iio device\n");
- goto fail_dev_register;
+ return ret;
}

- return 0;
-
-fail_dev_register:
-fail_trigger_alloc:
- iio_triggered_buffer_cleanup(indio_dev);
-
- return ret;
+ return devm_iio_device_register(&spi->dev, indio_dev);
}

static int max1027_remove(struct spi_device *spi)
{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
-
pr_debug("%s: remove(spi = 0x%p)\n", __func__, spi);

- iio_device_unregister(indio_dev);
- iio_triggered_buffer_cleanup(indio_dev);
-
return 0;
}

--
2.20.1