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staging: iio: adc: ad7192: fail probe on get_voltage 

This patch makes the ad7192_probe fail in case
regulator_get_voltage will return an error or voltage
is set to 0.

Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Tachici 2020-02-12 18:17:17 +02:00 committed by Jonathan Cameron
parent 1d8690fe61
commit ab0afa65bb
1 changed files with 5 additions and 2 deletions
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7
drivers/staging/iio/adc/ad7192.c
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@ -899,10 +899,13 @@ static int ad7192_probe(struct spi_device *spi)
voltage_uv = regulator_get_voltage(st->avdd); voltage_uv = regulator_get_voltage(st->avdd);
if (voltage_uv) if (voltage_uv > 0) {
st->int_vref_mv = voltage_uv / 1000; st->int_vref_mv = voltage_uv / 1000;
else } else {
ret = voltage_uv;
dev_err(&spi->dev, "Device tree error, reference voltage undefined\n"); dev_err(&spi->dev, "Device tree error, reference voltage undefined\n");
goto error_disable_avdd;
}
spi_set_drvdata(spi, indio_dev); spi_set_drvdata(spi, indio_dev);
st->devid = spi_get_device_id(spi)->driver_data; st->devid = spi_get_device_id(spi)->driver_data;