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iio: adc: ad7949: use devm managed functions 

Switch to devm_iio_device_register to finalize devm migration.
This removes the use for iio_device_unregister() and since
mutex_destroy() is not necessary here, remove it altogether.

Signed-off-by: Liam Beguin <lvb@xiphos.com>
Link: https://lore.kernel.org/r/20210815213309.2847711-6-liambeguin@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Liam Beguin 2021-08-15 17:33:09 -04:00 committed by Jonathan Cameron
parent 9a7b7594de
commit 870d26f659
1 changed files with 3 additions and 22 deletions
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25
drivers/iio/adc/ad7949.c
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@ -401,34 +401,16 @@ static int ad7949_spi_probe(struct spi_device *spi)
ret = ad7949_spi_init(ad7949_adc);
if (ret) {
dev_err(dev, "enable to init this device: %d\n", ret);
goto err;
return ret;
}
ret = iio_device_register(indio_dev);
if (ret) {
ret = devm_iio_device_register(dev, indio_dev);
if (ret)
dev_err(dev, "fail to register iio device: %d\n", ret);
goto err;
}
return 0;
err:
mutex_destroy(&ad7949_adc->lock);
return ret;
}
static int ad7949_spi_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad7949_adc_chip *ad7949_adc = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
mutex_destroy(&ad7949_adc->lock);
return 0;
}
static const struct of_device_id ad7949_spi_of_id[] = {
{ .compatible = "adi,ad7949" },
{ .compatible = "adi,ad7682" },
@ -451,7 +433,6 @@ static struct spi_driver ad7949_spi_driver = {
.of_match_table = ad7949_spi_of_id,
},
.probe = ad7949_spi_probe,
.remove = ad7949_spi_remove,
.id_table = ad7949_spi_id,
};
module_spi_driver(ad7949_spi_driver);