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iio: dac: ad5791: 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 2013-08-19 12:38:00 +01:00 committed by Jonathan Cameron
parent 7ff0de3faa
commit 0d7c04d33f
1 changed files with 9 additions and 26 deletions
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35
drivers/iio/dac/ad5791.c
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@ -349,17 +349,15 @@ static int ad5791_probe(struct spi_device *spi)
struct ad5791_state *st;
int ret, pos_voltage_uv = 0, neg_voltage_uv = 0;
indio_dev = iio_device_alloc(sizeof(*st));
if (indio_dev == NULL) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
if (!indio_dev)
return -ENOMEM;
st = iio_priv(indio_dev);
st->reg_vdd = regulator_get(&spi->dev, "vdd");
st->reg_vdd = devm_regulator_get(&spi->dev, "vdd");
if (!IS_ERR(st->reg_vdd)) {
ret = regulator_enable(st->reg_vdd);
if (ret)
goto error_put_reg_pos;
return ret;
ret = regulator_get_voltage(st->reg_vdd);
if (ret < 0)
@ -368,11 +366,11 @@ static int ad5791_probe(struct spi_device *spi)
pos_voltage_uv = ret;
}
st->reg_vss = regulator_get(&spi->dev, "vss");
st->reg_vss = devm_regulator_get(&spi->dev, "vss");
if (!IS_ERR(st->reg_vss)) {
ret = regulator_enable(st->reg_vss);
if (ret)
goto error_put_reg_neg;
goto error_disable_reg_pos;
ret = regulator_get_voltage(st->reg_vss);
if (ret < 0)
@ -428,19 +426,9 @@ static int ad5791_probe(struct spi_device *spi)
error_disable_reg_neg:
if (!IS_ERR(st->reg_vss))
regulator_disable(st->reg_vss);
error_put_reg_neg:
if (!IS_ERR(st->reg_vss))
regulator_put(st->reg_vss);
error_disable_reg_pos:
if (!IS_ERR(st->reg_vdd))
regulator_disable(st->reg_vdd);
error_put_reg_pos:
if (!IS_ERR(st->reg_vdd))
regulator_put(st->reg_vdd);
iio_device_free(indio_dev);
error_ret:
return ret;
}
@ -450,16 +438,11 @@ static int ad5791_remove(struct spi_device *spi)
struct ad5791_state *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
if (!IS_ERR(st->reg_vdd)) {
if (!IS_ERR(st->reg_vdd))
regulator_disable(st->reg_vdd);
regulator_put(st->reg_vdd);
}
if (!IS_ERR(st->reg_vss)) {
if (!IS_ERR(st->reg_vss))
regulator_disable(st->reg_vss);
regulator_put(st->reg_vss);
}
iio_device_free(indio_dev);
return 0;
}