diff options
Diffstat (limited to 'drivers/staging/iio')
| -rw-r--r-- | drivers/staging/iio/adc/ad7280a.c | 17 | ||||
| -rw-r--r-- | drivers/staging/iio/adc/ad7780.c | 6 | ||||
| -rw-r--r-- | drivers/staging/iio/resolver/ad2s90.c | 7 |
3 files changed, 24 insertions, 6 deletions
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c index 35acb1a4669b..db8390022732 100644 --- a/drivers/staging/iio/adc/ad7280a.c +++ b/drivers/staging/iio/adc/ad7280a.c @@ -250,7 +250,9 @@ static int ad7280_read(struct ad7280_state *st, unsigned devaddr, if (ret) return ret; - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -288,7 +290,9 @@ static int ad7280_read_channel(struct ad7280_state *st, unsigned devaddr, ad7280_delay(st); - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -321,7 +325,9 @@ static int ad7280_read_all_channels(struct ad7280_state *st, unsigned cnt, ad7280_delay(st); for (i = 0; i < cnt; i++) { - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -364,7 +370,10 @@ static int ad7280_chain_setup(struct ad7280_state *st) return ret; for (n = 0; n <= AD7280A_MAX_CHAIN; n++) { - __ad7280_read32(st, &val); + ret = __ad7280_read32(st, &val); + if (ret) + return ret; + if (val == 0) return n - 1; diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c index 3abc7789237f..531338ea5eb4 100644 --- a/drivers/staging/iio/adc/ad7780.c +++ b/drivers/staging/iio/adc/ad7780.c @@ -90,12 +90,16 @@ static int ad7780_read_raw(struct iio_dev *indio_dev, long m) { struct ad7780_state *st = iio_priv(indio_dev); + int voltage_uv; switch (m) { case IIO_CHAN_INFO_RAW: return ad_sigma_delta_single_conversion(indio_dev, chan, val); case IIO_CHAN_INFO_SCALE: - *val = st->int_vref_mv * st->gain; + voltage_uv = regulator_get_voltage(st->reg); + if (voltage_uv < 0) + return voltage_uv; + *val = (voltage_uv / 1000) * st->gain; *val2 = chan->scan_type.realbits - 1; return IIO_VAL_FRACTIONAL_LOG2; case IIO_CHAN_INFO_OFFSET: diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c index 5b1c0db33e7f..b44253eb62ec 100644 --- a/drivers/staging/iio/resolver/ad2s90.c +++ b/drivers/staging/iio/resolver/ad2s90.c @@ -86,7 +86,12 @@ static int ad2s90_probe(struct spi_device *spi) /* need 600ns between CS and the first falling edge of SCLK */ spi->max_speed_hz = 830000; spi->mode = SPI_MODE_3; - spi_setup(spi); + ret = spi_setup(spi); + + if (ret < 0) { + dev_err(&spi->dev, "spi_setup failed!\n"); + return ret; + } return 0; } |