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staging: iio: ad7780: Use devm_* APIs 

devm_* APIs are device managed and make code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Sachin Kamat 2013-08-31 18:12:00 +01:00 committed by Jonathan Cameron
parent 3727245a78
commit 4f6b38c8bf
1 changed files with 7 additions and 21 deletions
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28
drivers/staging/iio/adc/ad7780.c
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@ -171,7 +171,7 @@ static int ad7780_probe(struct spi_device *spi)
struct iio_dev *indio_dev;
int ret, voltage_uv = 0;
indio_dev = iio_device_alloc(sizeof(*st));
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
if (indio_dev == NULL)
return -ENOMEM;
@ -180,11 +180,11 @@ static int ad7780_probe(struct spi_device *spi)
ad_sd_init(&st->sd, indio_dev, spi, &ad7780_sigma_delta_info);
st->reg = regulator_get(&spi->dev, "vcc");
st->reg = devm_regulator_get(&spi->dev, "vcc");
if (!IS_ERR(st->reg)) {
ret = regulator_enable(st->reg);
if (ret)
goto error_put_reg;
return ret;
voltage_uv = regulator_get_voltage(st->reg);
}
@ -210,8 +210,8 @@ static int ad7780_probe(struct spi_device *spi)
if (pdata && gpio_is_valid(pdata->gpio_pdrst)) {
ret = gpio_request_one(pdata->gpio_pdrst, GPIOF_OUT_INIT_LOW,
"AD7780 /PDRST");
ret = devm_gpio_request_one(&spi->dev, pdata->gpio_pdrst,
GPIOF_OUT_INIT_LOW, "AD7780 /PDRST");
if (ret) {
dev_err(&spi->dev, "failed to request GPIO PDRST\n");
goto error_disable_reg;
@ -223,7 +223,7 @@ static int ad7780_probe(struct spi_device *spi)
ret = ad_sd_setup_buffer_and_trigger(indio_dev);
if (ret)
goto error_free_gpio;
goto error_disable_reg;
ret = iio_device_register(indio_dev);
if (ret)
@ -233,17 +233,9 @@ static int ad7780_probe(struct spi_device *spi)
error_cleanup_buffer_and_trigger:
ad_sd_cleanup_buffer_and_trigger(indio_dev);
error_free_gpio:
if (pdata && gpio_is_valid(pdata->gpio_pdrst))
gpio_free(pdata->gpio_pdrst);
error_disable_reg:
if (!IS_ERR(st->reg))
regulator_disable(st->reg);
error_put_reg:
if (!IS_ERR(st->reg))
regulator_put(st->reg);
iio_device_free(indio_dev);
return ret;
}
@ -256,14 +248,8 @@ static int ad7780_remove(struct spi_device *spi)
iio_device_unregister(indio_dev);
ad_sd_cleanup_buffer_and_trigger(indio_dev);
if (gpio_is_valid(st->powerdown_gpio))
gpio_free(st->powerdown_gpio);
if (!IS_ERR(st->reg)) {
if (!IS_ERR(st->reg))
regulator_disable(st->reg);
regulator_put(st->reg);
}
iio_device_free(indio_dev);
return 0;
}