diff options
| author | David Lechner <dlechner@baylibre.com> | 2024-03-25 14:40:36 -0500 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-03-28 13:22:21 +0000 |
| commit | 27eea4778db8268cd6dc80a5b853c599bd3099f1 (patch) | |
| tree | c5e62cbdd02884f32560e5c5ceff69a38913454c /drivers/iio/adc/ad7944.c | |
| parent | 3d797af1d69a23571ec89dc4d95eb0e0e971d3d8 (diff) | |
iio: adc: ad7944: simplify adi,spi-mode property parsing
This simplifies the adi,spi-mode property parsing by using
device_property_match_property_string() instead of two separate
functions. Also, the error return value is now more informative
in cases where there was a problem parsing the property.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240325-ad7944-cleanups-v3-1-3a19120cdd06@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/ad7944.c')
| -rw-r--r-- | drivers/iio/adc/ad7944.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/iio/adc/ad7944.c b/drivers/iio/adc/ad7944.c index d5ec6b5a41c7..9aa3e98cd75c 100644 --- a/drivers/iio/adc/ad7944.c +++ b/drivers/iio/adc/ad7944.c @@ -366,7 +366,6 @@ static int ad7944_probe(struct spi_device *spi) struct ad7944_adc *adc; bool have_refin = false; struct regulator *ref; - const char *str_val; int ret; indio_dev = devm_iio_device_alloc(dev, sizeof(*adc)); @@ -382,17 +381,17 @@ static int ad7944_probe(struct spi_device *spi) adc->timing_spec = chip_info->timing_spec; - if (device_property_read_string(dev, "adi,spi-mode", &str_val) == 0) { - ret = sysfs_match_string(ad7944_spi_modes, str_val); - if (ret < 0) - return dev_err_probe(dev, -EINVAL, - "unsupported adi,spi-mode\n"); - - adc->spi_mode = ret; - } else { - /* absence of adi,spi-mode property means default mode */ + ret = device_property_match_property_string(dev, "adi,spi-mode", + ad7944_spi_modes, + ARRAY_SIZE(ad7944_spi_modes)); + /* absence of adi,spi-mode property means default mode */ + if (ret == -EINVAL) adc->spi_mode = AD7944_SPI_MODE_DEFAULT; - } + else if (ret < 0) + return dev_err_probe(dev, ret, + "getting adi,spi-mode property failed\n"); + else + adc->spi_mode = ret; if (adc->spi_mode == AD7944_SPI_MODE_CHAIN) return dev_err_probe(dev, -EINVAL, |