From: David Lechner <dlechner@baylibre.com>
To: Jonathan Cameron <jic23@kernel.org>
Cc: "David Lechner" <dlechner@baylibre.com>,
"Michael Hennerich" <michael.hennerich@analog.com>,
"Nuno Sá" <nuno.sa@analog.com>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
"Andy Shevchenko" <andy.shevchenko@gmail.com>
Subject: [PATCH v2] iio: adc: ad7944: simplify adi,spi-mode property parsing
Date: Tue, 19 Mar 2024 09:27:45 -0500 [thread overview]
Message-ID: <20240319-ad7944-cleanups-v2-1-50e77269351b@baylibre.com> (raw)
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 problem parsing the property.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
---
Changes in v2:
- Reorder error path to avoid else statement
- Link to v1: https://lore.kernel.org/r/20240318-ad7944-cleanups-v1-1-0cbb0349a14f@baylibre.com
---
drivers/iio/adc/ad7944.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/iio/adc/ad7944.c b/drivers/iio/adc/ad7944.c
index d5ec6b5a41c7..261a3f645fd8 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));
@@ -382,16 +381,18 @@ 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");
+ ret = device_property_match_property_string(dev, "adi,spi-mode",
+ ad7944_spi_modes,
+ ARRAY_SIZE(ad7944_spi_modes));
+ if (ret < 0) {
+ if (ret != -EINVAL)
+ return dev_err_probe(dev, ret,
+ "getting adi,spi-mode property failed\n");
- adc->spi_mode = ret;
- } else {
/* absence of adi,spi-mode property means default mode */
adc->spi_mode = AD7944_SPI_MODE_DEFAULT;
+ } else {
+ adc->spi_mode = ret;
}
if (adc->spi_mode == AD7944_SPI_MODE_CHAIN)
---
base-commit: 1446d8ef48196409f811c25071b2cc510a49fc60
change-id: 20240318-ad7944-cleanups-9f95a7c598b6
next reply other threads:[~2024-03-19 14:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-19 14:27 David Lechner [this message]
2024-03-19 15:01 ` [PATCH v2] iio: adc: ad7944: simplify adi,spi-mode property parsing Andy Shevchenko
2024-03-19 15:28 ` David Lechner
2024-03-23 18:29 ` Jonathan Cameron
2024-03-23 20:44 ` Andy Shevchenko
2024-03-24 12:18 ` Jonathan Cameron
2024-03-23 18:31 ` Jonathan Cameron
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